[edk2-devel] [PATCH v3] Features/Intel/UserInterface: Add VirtualKeyboardFeaturePkg

Tan, Ming posted 1 patch 3 years, 10 months ago
Patches applied successfully (tree, apply log)
git fetch https://github.com/patchew-project/edk2 tags/patchew/20200508005044.14645-1-ming.tan@intel.com
There is a newer version of this series
.../Include/PostMemory.fdf                    |   10 +
.../Include/PreMemory.fdf                     |    8 +
.../Include/VirtualKeyboardFeature.dsc        |   96 ++
.../VirtualKeyboardFeaturePkg/Readme.md       |   68 +
.../CapitalLetterKeyboard.bmp                 |  Bin 0 -> 330454 bytes
.../VirtualKeyboardDxe/ComponentName.c        |  159 ++
.../VirtualKeyboardDxe/ComponentName.h        |   95 ++
.../VirtualKeyboardDxe/DigitKeyboard.bmp      |  Bin 0 -> 330454 bytes
.../VirtualKeyboardDxe/FullIcon.bmp           |  Bin 0 -> 5454 bytes
.../VirtualKeyboardDxe/Keyboard.c             | 1411 ++++++++++++++++
.../VirtualKeyboardDxe/KeyboardLayout.c       | 1438 +++++++++++++++++
.../VirtualKeyboardDxe/KeyboardLayout.idf     |   12 +
.../VirtualKeyboardDxe/SimpleIcon.bmp         |  Bin 0 -> 2814 bytes
.../VirtualKeyboardDxe/SimpleKeyboard.bmp     |  Bin 0 -> 30054 bytes
.../VirtualKeyboardDxe/VirtualKeyboard.h      |  829 ++++++++++
.../VirtualKeyboardDriver.c                   |  515 ++++++
.../VirtualKeyboardDxe/VirtualKeyboardDxe.inf |   78 +
.../VirtualKeyboardFeaturePkg.dec             |   26 +
.../VirtualKeyboardFeaturePkg.dsc             |   30 +
19 files changed, 4775 insertions(+)
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/PostMemory.fdf
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/PreMemory.fdf
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/VirtualKeyboardFeature.dsc
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Readme.md
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/CapitalLetterKeyboard.bmp
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/ComponentName.c
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/ComponentName.h
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/DigitKeyboard.bmp
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/FullIcon.bmp
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/Keyboard.c
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/KeyboardLayout.c
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/KeyboardLayout.idf
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/SimpleIcon.bmp
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/SimpleKeyboard.bmp
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyboard.h
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyboardDriver.c
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyboardDxe.inf
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardFeaturePkg.dec
create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardFeaturePkg.dsc
[edk2-devel] [PATCH v3] Features/Intel/UserInterface: Add VirtualKeyboardFeaturePkg
Posted by Tan, Ming 3 years, 10 months ago
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2603

It add a VirtualKeyboardDxe driver.
It is used with a touch panel, simulate a keyboard in the screen.

Signed-off-by: Ming Tan <ming.tan@intel.com>
---
 .../Include/PostMemory.fdf                    |   10 +
 .../Include/PreMemory.fdf                     |    8 +
 .../Include/VirtualKeyboardFeature.dsc        |   96 ++
 .../VirtualKeyboardFeaturePkg/Readme.md       |   68 +
 .../CapitalLetterKeyboard.bmp                 |  Bin 0 -> 330454 bytes
 .../VirtualKeyboardDxe/ComponentName.c        |  159 ++
 .../VirtualKeyboardDxe/ComponentName.h        |   95 ++
 .../VirtualKeyboardDxe/DigitKeyboard.bmp      |  Bin 0 -> 330454 bytes
 .../VirtualKeyboardDxe/FullIcon.bmp           |  Bin 0 -> 5454 bytes
 .../VirtualKeyboardDxe/Keyboard.c             | 1411 ++++++++++++++++
 .../VirtualKeyboardDxe/KeyboardLayout.c       | 1438 +++++++++++++++++
 .../VirtualKeyboardDxe/KeyboardLayout.idf     |   12 +
 .../VirtualKeyboardDxe/SimpleIcon.bmp         |  Bin 0 -> 2814 bytes
 .../VirtualKeyboardDxe/SimpleKeyboard.bmp     |  Bin 0 -> 30054 bytes
 .../VirtualKeyboardDxe/VirtualKeyboard.h      |  829 ++++++++++
 .../VirtualKeyboardDriver.c                   |  515 ++++++
 .../VirtualKeyboardDxe/VirtualKeyboardDxe.inf |   78 +
 .../VirtualKeyboardFeaturePkg.dec             |   26 +
 .../VirtualKeyboardFeaturePkg.dsc             |   30 +
 19 files changed, 4775 insertions(+)
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/PostMemory.fdf
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/PreMemory.fdf
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/VirtualKeyboardFeature.dsc
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Readme.md
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/CapitalLetterKeyboard.bmp
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/ComponentName.c
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/ComponentName.h
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/DigitKeyboard.bmp
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/FullIcon.bmp
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/Keyboard.c
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/KeyboardLayout.c
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/KeyboardLayout.idf
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/SimpleIcon.bmp
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/SimpleKeyboard.bmp
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyboard.h
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyboardDriver.c
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyboardDxe.inf
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardFeaturePkg.dec
 create mode 100644 Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardFeaturePkg.dsc

diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/PostMemory.fdf b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/PostMemory.fdf
new file mode 100644
index 0000000000..bf4a4d5078
--- /dev/null
+++ b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/PostMemory.fdf
@@ -0,0 +1,10 @@
+## @file
+#  FDF file for post-memory modules that enable Virtual Keyboard.
+#
+# Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+  INF UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyboardDxe.inf
diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/PreMemory.fdf b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/PreMemory.fdf
new file mode 100644
index 0000000000..c39a057f94
--- /dev/null
+++ b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/PreMemory.fdf
@@ -0,0 +1,8 @@
+## @file
+#  FDF file for pre-memory modules that enable Virtual Keyboard.
+#
+# Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/VirtualKeyboardFeature.dsc b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/VirtualKeyboardFeature.dsc
new file mode 100644
index 0000000000..c10fb2d567
--- /dev/null
+++ b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/VirtualKeyboardFeature.dsc
@@ -0,0 +1,96 @@
+## @file
+# This is a build description file for the Virtual Keyboard feature.
+# This file should be included into another package DSC file to build this feature.
+#
+# The DEC files are used by the utilities that parse DSC and
+# INF files to generate AutoGen.c and AutoGen.h files
+# for the build infrastructure.
+#
+# Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+################################################################################
+#
+# Defines Section - statements that will be processed to create a Makefile.
+#
+################################################################################
+[Defines]
+!ifndef $(PEI_ARCH)
+  !error "PEI_ARCH must be specified to build this feature!"
+!endif
+!ifndef $(DXE_ARCH)
+  !error "DXE_ARCH must be specified to build this feature!"
+!endif
+
+################################################################################
+#
+# Library Class section - list of all Library Classes needed by this feature.
+#
+################################################################################
+[LibraryClasses]
+  #######################################
+  # Edk2 Packages
+  #######################################
+  BaseLib|MdePkg/Library/BaseLib/BaseLib.inf
+  BaseMemoryLib|MdePkg/Library/BaseMemoryLib/BaseMemoryLib.inf
+  DebugLib|MdePkg/Library/BaseDebugLibNull/BaseDebugLibNull.inf
+  UefiBootServicesTableLib|MdePkg/Library/UefiBootServicesTableLib/UefiBootServicesTableLib.inf
+  UefiDriverEntryPoint|MdePkg/Library/UefiDriverEntryPoint/UefiDriverEntryPoint.inf
+  UefiLib|MdePkg/Library/UefiLib/UefiLib.inf
+  PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
+  HiiLib|MdeModulePkg/Library/UefiHiiLib/UefiHiiLib.inf
+  DevicePathLib|MdePkg/Library/UefiDevicePathLib/UefiDevicePathLib.inf
+  PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
+  UefiHiiServicesLib|MdeModulePkg/Library/UefiHiiServicesLib/UefiHiiServicesLib.inf
+  UefiRuntimeServicesTableLib|MdePkg/Library/UefiRuntimeServicesTableLib/UefiRuntimeServicesTableLib.inf
+
+[LibraryClasses.common.UEFI_DRIVER]
+  #######################################
+  # Edk2 Packages
+  #######################################
+  MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
+
+###################################################################################################
+#
+# Components Section - list of the modules and components that will be processed by compilation
+#                      tools and the EDK II tools to generate PE32/PE32+/Coff image files.
+#
+# Note: The EDK II DSC file is not used to specify how compiled binary images get placed
+#       into firmware volume images. This section is just a list of modules to compile from
+#       source into UEFI-compliant binaries.
+#       It is the FDF file that contains information on combining binary files into firmware
+#       volume images, whose concept is beyond UEFI and is described in PI specification.
+#       Binary modules do not need to be listed in this section, as they should be
+#       specified in the FDF file. For example: Shell binary (Shell_Full.efi), FAT binary (Fat.efi),
+#       Logo (Logo.bmp), and etc.
+#       There may also be modules listed in this section that are not required in the FDF file,
+#       When a module listed here is excluded from FDF file, then UEFI-compliant binary will be
+#       generated for it, but the binary will not be put into any firmware volume.
+#
+###################################################################################################
+#
+# Feature DXE Components
+#
+[Components.X64]
+  #####################################
+  # Virtual Keyboard Feature Package
+  #####################################
+  UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyboardDxe.inf
+
+###################################################################################################
+#
+# BuildOptions Section - Define the module specific tool chain flags that should be used as
+#                        the default flags for a module. These flags are appended to any
+#                        standard flags that are defined by the build process. They can be
+#                        applied for any modules or only those modules with the specific
+#                        module style (EDK or EDKII) specified in [Components] section.
+#
+#                        For advanced features, it is recommended to enable [BuildOptions] in
+#                        the applicable INF file so it does not affect the whole board package
+#                        build when this DSC file is active.
+#
+###################################################################################################
+[BuildOptions]
diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Readme.md b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Readme.md
new file mode 100644
index 0000000000..ae7f778748
--- /dev/null
+++ b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Readme.md
@@ -0,0 +1,68 @@
+# Overview
+* **Feature Name:** Virtual Keyboard
+* **PI Phase(s) Supported:** DXE
+* **SMM Required?** No
+
+## Purpose
+This feature provides a DXE virtual keyboard driver, used with a touch panel.
+
+# High-Level Theory of Operation
+This driver will use the following protocol:
+  gEfiAbsolutePointerProtocolGuid
+  gEfiGraphicsOutputProtocolGuid
+  gEdkiiTouchPanelGuid
+
+It will show a picture like a keyboard in the graphic output, then detect
+position when user touch the touch panel, then calculate the key which the
+user want to type.
+Touch panel driver use gEdkiiTouchPanelGuid to indicate the touch panel is ready for support virtual keyboard.
+
+## Firmware Volumes
+FvAdvancedUncompact
+FvAdvanced
+
+## Modules
+VirtualKeyboardDxe: The main driver of virtual keyboard.
+
+## VirtualKeyboardDxe
+This driver support the virtual keyboard feature.
+
+## Key Functions
+* Show a small icon in the corner to show/hide a keyboard picture in the screen.
+* If the user press the button in the picture, then convert it to the keyboard input.
+* Support general simple keyboard input.
+
+## Configuration
+There is not PCD or EFI variable used to config this feature.
+Platform maybe use its own solution to load/unload this driver.
+
+## Data Flows
+User touch the touch panel -> absolute pointer and status -> virtual keyboard event -> user keyboard input.
+
+## Control Flows
+This driver use AbsolutePointer protocol to get the info of user input, and use GraphicsOutput protocol to show the picture.
+
+## Build Flows
+There is not special build flow.
+
+## Test Point Results
+Test this driver in a device with touch panel and the BIOS support touch panel driver.
+If there is not touch panel, then can modify a mouse driver to support absolute pointer protocol to verify this driver.
+
+## Functional Exit Criteria
+* If the touch panel driver is not ready, then will not start this driver.
+* Show small icon in the corner of the screen.
+* Touch the icon, can show/hide the keyboard layout picture in the screen.
+* Touch the key in the keyboardy layout picture, can input the correct key.
+
+## Feature Enabling Checklist
+Make sure the following protocols are supported:
+  gEfiAbsolutePointerProtocolGuid
+  gEfiGraphicsOutputProtocolGuid
+  gEdkiiTouchPanelGuid
+
+## Performance Impact
+* VirtualKeyboardDxe.efi: debug version size: 734KB before compress, release version size: 698KB before compress.
+
+## Common Optimizations
+* The picture use bmp format, cost 684KB total. Use JPEG or other format can save the efi size before compress.
diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/CapitalLetterKeyboard.bmp b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/CapitalLetterKeyboard.bmp
new file mode 100644
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diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/ComponentName.c b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/ComponentName.c
new file mode 100644
index 0000000000..6ac28ab90b
--- /dev/null
+++ b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/ComponentName.c
@@ -0,0 +1,159 @@
+/** @file
+  Virtual Keyboard driver name.
+
+  Copyright (c) 2012 - 2020, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "VirtualKeyboard.h"
+
+//
+// EFI Component Name Protocol
+//
+GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME_PROTOCOL gVirtualKeyboardComponentName = {
+  VirtualKeyboardComponentNameGetDriverName,
+  VirtualKeyboardComponentNameGetControllerName,
+  "eng"
+};
+
+//
+// EFI Component Name 2 Protocol
+//
+GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME2_PROTOCOL gVirtualKeyboardComponentName2 = {
+  (EFI_COMPONENT_NAME2_GET_DRIVER_NAME)     VirtualKeyboardComponentNameGetDriverName,
+  (EFI_COMPONENT_NAME2_GET_CONTROLLER_NAME) VirtualKeyboardComponentNameGetControllerName,
+  "en"
+};
+
+//
+// Table of driver names
+//
+GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE mVirtualKeyboardDriverNameTable[] = {
+  {
+    "eng;en",
+    L"UEFI Virtual Keyboard Driver"
+  },
+  {
+    NULL,
+    NULL
+  }
+};
+
+//
+// Controller name string table
+//
+GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE mVirtualKeyboardControllerNameStringTable[] = {
+  {
+    "eng",
+    L"UEFI Virtual Keyboard Driver"
+  },
+  {
+    NULL,
+    NULL
+  }
+};
+
+/**
+  Retrieves a Unicode string that is the user-readable name of the EFI Driver.
+
+  @param[in]  This              A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
+  @param[in]  Language          A pointer to a three-character ISO 639-2 language identifier.
+                                This is the language of the driver name that that the caller
+                                is requesting, and it must match one of the languages specified
+                                in SupportedLanguages.  The number of languages supported by a
+                                driver is up to the driver writer.
+  @param[out] DriverName        A pointer to the Unicode string to return.  This Unicode string
+                                is the name of the driver specified by This in the language
+                                specified by Language.
+
+  @retval EFI_SUCCESS           The Unicode string for the Driver specified by This
+                                and the language specified by Language was returned
+                                in DriverName.
+  @retval EFI_INVALID_PARAMETER Language is NULL.
+  @retval EFI_INVALID_PARAMETER DriverName is NULL.
+  @retval EFI_UNSUPPORTED       The driver specified by This does not support the
+                                language specified by Language.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardComponentNameGetDriverName (
+  IN  EFI_COMPONENT_NAME_PROTOCOL *This,
+  IN  CHAR8                       *Language,
+  OUT CHAR16                      **DriverName
+  )
+{
+  return LookupUnicodeString2 (
+           Language,
+           This->SupportedLanguages,
+           mVirtualKeyboardDriverNameTable,
+           DriverName,
+           (BOOLEAN)(This == &gVirtualKeyboardComponentName)
+           );
+}
+
+/**
+  Retrieves a Unicode string that is the user readable name of the controller
+  that is being managed by an EFI Driver.
+
+  @param[in]  This              A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
+  @param[in]  ControllerHandle  The handle of a controller that the driver specified by
+                                This is managing.  This handle specifies the controller
+                                whose name is to be returned.
+  @param[in]  ChildHandle       The handle of the child controller to retrieve the name
+                                of.  This is an optional parameter that may be NULL.  It
+                                will be NULL for device drivers.  It will also be NULL
+                                for a bus drivers that wish to retrieve the name of the
+                                bus controller.  It will not be NULL for a bus driver
+                                that wishes to retrieve the name of a child controller.
+  @param[in]  Language          A pointer to a three character ISO 639-2 language
+                                identifier.  This is the language of the controller name
+                                that the caller is requesting, and it must match one
+                                of the languages specified in SupportedLanguages.  The
+                                number of languages supported by a driver is up to the
+                                driver writer.
+  @param[out] ControllerName    A pointer to the Unicode string to return.  This Unicode
+                                string is the name of the controller specified by
+                                ControllerHandle and ChildHandle in the language specified
+                                by Language, from the point of view of the driver specified
+                                by This.
+
+  @retval EFI_SUCCESS           The Unicode string for the user-readable name in the
+                                language specified by Language for the driver
+                                specified by This was returned in DriverName.
+  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
+  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid EFI_HANDLE.
+  @retval EFI_INVALID_PARAMETER Language is NULL.
+  @retval EFI_INVALID_PARAMETER ControllerName is NULL.
+  @retval EFI_UNSUPPORTED       The driver specified by This is not currently managing
+                                the controller specified by ControllerHandle and
+                                ChildHandle.
+  @retval EFI_UNSUPPORTED       The driver specified by This does not support the
+                                language specified by Language.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardComponentNameGetControllerName (
+  IN  EFI_COMPONENT_NAME_PROTOCOL *This,
+  IN  EFI_HANDLE                  ControllerHandle,
+  IN  EFI_HANDLE                  ChildHandle, OPTIONAL
+  IN  CHAR8                       *Language,
+  OUT CHAR16                      **ControllerName
+  )
+{
+  //
+  // ChildHandle must be NULL for a Device Driver
+  //
+  if (ChildHandle != NULL) {
+    return EFI_UNSUPPORTED;
+  }
+  return LookupUnicodeString2 (
+           Language,
+           This->SupportedLanguages,
+           mVirtualKeyboardControllerNameStringTable,
+           ControllerName,
+           (BOOLEAN)(This == &gVirtualKeyboardComponentName)
+           );
+}
diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/ComponentName.h b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/ComponentName.h
new file mode 100644
index 0000000000..327ce9f9cb
--- /dev/null
+++ b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/ComponentName.h
@@ -0,0 +1,95 @@
+/** @file
+  Header file for Virtual Keyboard driver name.
+
+  Copyright (c) 2012 - 2020, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef _VIRTUAL_KEYBOARD_COMPONENT_NAME_H_
+#define _VIRTUAL_KEYBOARD_COMPONENT_NAME_H_
+
+#include <Uefi.h>
+#include <Protocol/ComponentName.h>
+#include <Protocol/ComponentName2.h>
+
+/**
+  Retrieves a Unicode string that is the user-readable name of the EFI Driver.
+
+  @param[in]  This              A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
+  @param[in]  Language          A pointer to a three-character ISO 639-2 language identifier.
+                                This is the language of the driver name that that the caller
+                                is requesting, and it must match one of the languages specified
+                                in SupportedLanguages.  The number of languages supported by a
+                                driver is up to the driver writer.
+  @param[out] DriverName        A pointer to the Unicode string to return.  This Unicode string
+                                is the name of the driver specified by This in the language
+                                specified by Language.
+
+  @retval EFI_SUCCESS           The Unicode string for the Driver specified by This
+                                and the language specified by Language was returned
+                                in DriverName.
+  @retval EFI_INVALID_PARAMETER Language is NULL.
+  @retval EFI_INVALID_PARAMETER DriverName is NULL.
+  @retval EFI_UNSUPPORTED       The driver specified by This does not support the
+                                language specified by Language.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardComponentNameGetDriverName (
+  IN  EFI_COMPONENT_NAME_PROTOCOL *This,
+  IN  CHAR8                       *Language,
+  OUT CHAR16                      **DriverName
+  );
+
+/**
+  Retrieves a Unicode string that is the user readable name of the controller
+  that is being managed by an EFI Driver.
+
+  @param[in]  This              A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
+  @param[in]  ControllerHandle  The handle of a controller that the driver specified by
+                                This is managing.  This handle specifies the controller
+                                whose name is to be returned.
+  @param[in]  ChildHandle       The handle of the child controller to retrieve the name
+                                of.  This is an optional parameter that may be NULL.  It
+                                will be NULL for device drivers.  It will also be NULL
+                                for a bus drivers that wish to retrieve the name of the
+                                bus controller.  It will not be NULL for a bus driver
+                                that wishes to retrieve the name of a child controller.
+  @param[in]  Language          A pointer to a three character ISO 639-2 language
+                                identifier.  This is the language of the controller name
+                                that the caller is requesting, and it must match one
+                                of the languages specified in SupportedLanguages.  The
+                                number of languages supported by a driver is up to the
+                                driver writer.
+  @param[out] ControllerName    A pointer to the Unicode string to return.  This Unicode
+                                string is the name of the controller specified by
+                                ControllerHandle and ChildHandle in the language specified
+                                by Language, from the point of view of the driver specified
+                                by This.
+
+  @retval EFI_SUCCESS           The Unicode string for the user-readable name in the
+                                language specified by Language for the driver
+                                specified by This was returned in DriverName.
+  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
+  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid EFI_HANDLE.
+  @retval EFI_INVALID_PARAMETER Language is NULL.
+  @retval EFI_INVALID_PARAMETER ControllerName is NULL.
+  @retval EFI_UNSUPPORTED       The driver specified by This is not currently managing
+                                the controller specified by ControllerHandle and
+                                ChildHandle.
+  @retval EFI_UNSUPPORTED       The driver specified by This does not support the
+                                language specified by Language.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardComponentNameGetControllerName (
+  IN  EFI_COMPONENT_NAME_PROTOCOL *This,
+  IN  EFI_HANDLE                  ControllerHandle,
+  IN  EFI_HANDLE                  ChildHandle, OPTIONAL
+  IN  CHAR8                       *Language,
+  OUT CHAR16                      **ControllerName
+  );
+#endif
diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/DigitKeyboard.bmp b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/DigitKeyboard.bmp
new file mode 100644
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diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/FullIcon.bmp b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/FullIcon.bmp
new file mode 100644
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diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/Keyboard.c b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/Keyboard.c
new file mode 100644
index 0000000000..84c3a06f68
--- /dev/null
+++ b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/Keyboard.c
@@ -0,0 +1,1411 @@
+/** @file
+  Virtural Keyboard Control Engine
+
+  Copyright (c) 2012 - 2020, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "VirtualKeyboard.h"
+
+/**
+  Notify all keyboards pressed specific key need to hidden Virtual
+  Keyboard.
+
+  @param[in] KeyData          Keyboard pressed specific key data
+
+  @retval EFI_SUCCESS         Success for the function.
+  @retval EFI_NOT_FOUND       Not found Virtual Keyboard protocol.
+
+**/
+EFI_STATUS
+EFIAPI
+VkNotifyKeyCallback (
+  IN EFI_KEY_DATA *KeyData
+  )
+{
+  EFI_STATUS Status;
+  VK_CONTEXT *VkContext;
+  UINTN      MaxColumn;
+  UINTN      MaxRow;
+  UINT32     HorizontalPixel;
+  UINT32     VerticalPixel;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkNotifyKeyCallback Start\n"));
+
+  Status = gBS->LocateProtocol (&gEfiCallerIdGuid, NULL, (VOID **) &VkContext);
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+
+  gST->ConOut->QueryMode (
+                 gST->ConOut,
+                 gST->ConOut->Mode->Mode,
+                 &MaxColumn,
+                 &MaxRow
+                 );
+  HorizontalPixel = VkContext->GraphicsOutput->Mode->Info->HorizontalResolution;
+  VerticalPixel   = VkContext->GraphicsOutput->Mode->Info->VerticalResolution;
+
+  //
+  // CursorRow and CursorColumn are started from 0, so need to add 2 not 1.
+  //
+  if (((UINTN)(gST->ConOut->Mode->CursorColumn * EFI_GLYPH_WIDTH) < VkContext->SimIconBackWidth) &&
+      ((UINTN)((gST->ConOut->Mode->CursorRow + 2) * EFI_GLYPH_HEIGHT) > (VerticalPixel - VkContext->SimIconBackHeight))) {
+    SaveVkIconBackgroundBltBuffer (VkContext, VkDisplayAttributeSimpleBottom);
+  } else if (((UINTN)((gST->ConOut->Mode->CursorColumn + 2) * EFI_GLYPH_WIDTH) > (HorizontalPixel - VkContext->FullIconBackWidth)) &&
+             ((UINTN)((gST->ConOut->Mode->CursorRow + 2) * EFI_GLYPH_HEIGHT) > (VerticalPixel - VkContext->FullIconBackHeight))){
+    SaveVkIconBackgroundBltBuffer (VkContext, VkDisplayAttributeFullBottom);
+  }
+
+  //
+  // Hide icon/keyboard to prevent screen scroll up.
+  //
+  if ((KeyData->Key.UnicodeChar         == CHAR_CARRIAGE_RETURN)    ||
+      (KeyData->Key.ScanCode            == SCAN_ESC)                ||
+      ((gST->ConOut->Mode->CursorColumn >= (INT32) (MaxColumn - 2)) &&
+       (gST->ConOut->Mode->CursorRow    == (INT32) (MaxRow - 1)))) {
+    HideVkBody (VkContext);
+    HideVkIcon (VkContext);
+    VkContext->IconReDrawCheck = 0;
+  }
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkNotifyKeyCallback End\n"));
+  return EFI_SUCCESS;
+}
+
+/**
+  Judge whether is a registed key.
+
+  @param[in] RegsiteredData   A pointer to a buffer that is filled in with the keystroke
+                              state data for the key that was registered.
+  @param[in] InputData        A pointer to a buffer that is filled in with the keystroke
+                              state data for the key that was pressed.
+
+  @retval TRUE                Key be pressed matches a registered key.
+  @retval FLASE               Match failed.
+
+**/
+BOOLEAN
+IsKeyRegistered (
+  IN EFI_KEY_DATA  *RegsiteredData,
+  IN EFI_KEY_DATA  *InputData
+  )
+{
+  ASSERT (RegsiteredData != NULL && InputData != NULL);
+
+  if ((RegsiteredData->Key.ScanCode    != InputData->Key.ScanCode) ||
+      (RegsiteredData->Key.UnicodeChar != InputData->Key.UnicodeChar)) {
+    return FALSE;
+  }
+
+  //
+  // Assume KeyShiftState/KeyToggleState = 0 in Registered key data means these state could be ignored.
+  //
+  if (RegsiteredData->KeyState.KeyShiftState != 0 &&
+      RegsiteredData->KeyState.KeyShiftState != InputData->KeyState.KeyShiftState) {
+    return FALSE;
+  }
+  if (RegsiteredData->KeyState.KeyToggleState != 0 &&
+      RegsiteredData->KeyState.KeyToggleState != InputData->KeyState.KeyToggleState) {
+    return FALSE;
+  }
+
+  return TRUE;
+}
+
+/**
+  Pop the key from the keybuffer.
+
+  @param[in, out] VkContext    Address of an VK_CONTEXT structure.
+  @param[out]     KeyData      The EFI stand key infomation when code get the key will put
+                               correct mapping key.
+
+  @retval EFI_SUCCESS          The keystroke information was returned.
+  @retval EFI_NOT_READY        The keystroke data is empty.
+
+**/
+EFI_STATUS
+VkPopTheKey (
+  IN OUT VK_CONTEXT   *VkContext,
+     OUT EFI_KEY_DATA *KeyData OPTIONAL
+  )
+{
+  EFI_STATUS Status;
+  UINT8      IndexSt;
+  UINT8      IndexEd;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkPopTheKey Start\n"));
+  //
+  // KeyBuffer
+  // [         0          ]
+  // [         1          ]<-*IndexSt/IndexEd
+  // [         2          ]
+  // [        ...         ]
+  // [MAX_KEY_BUF_SIZE - 1]
+  //
+  Status  = EFI_SUCCESS;
+  IndexSt = VkContext->KeyStartIndex;
+  IndexEd = VkContext->KeyEndIndex;
+
+  if (IndexEd == IndexSt) {
+    DEBUG ((DEBUG_VK_KEYS, "ERROR - Keyboard buffer is empty.\n"));
+    Status = EFI_NOT_READY;
+    goto Error;
+  }
+
+  DEBUG ((DEBUG_VK_KEYS | DEBUG_INFO, "VkPopTheKey Unicode:    %08x\n", VkContext->Keybuffer[IndexSt].Key.UnicodeChar));
+  DEBUG ((DEBUG_VK_KEYS | DEBUG_INFO, "VkPopTheKey ScanCode:   %08x\n", VkContext->Keybuffer[IndexSt].Key.ScanCode));
+  DEBUG ((DEBUG_VK_KEYS | DEBUG_INFO, "VkPopTheKey ShiftState: %08x\n", VkContext->Keybuffer[IndexSt].KeyState.KeyShiftState));
+  DEBUG ((DEBUG_VK_KEYS | DEBUG_INFO, "VkPopTheKey ToggleState:%08x\n", VkContext->Keybuffer[IndexSt].KeyState.KeyToggleState));
+
+  if (KeyData != NULL) {
+    *KeyData = VkContext->Keybuffer[IndexSt];
+  }
+  VkContext->KeyStartIndex = ++IndexSt % MAX_KEY_BUF_SIZE;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkPopTheKey Success, Status: %r\n", Status));
+  goto End;
+
+Error:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkPopTheKey Failed, Status: %r\n", Status));
+
+End:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkPopTheKey End\n"));
+  return Status;
+}
+
+/**
+  Push the event mapping key index to the input key buffer.
+
+  @param[in, out] VkContext    Address of an VK_CONTEXT structure.
+  @param[in]      Unicode      The font's unicode number.
+
+  @retval EFI_SUCCESS          The maping key index did put the key buffer.
+
+**/
+EFI_STATUS
+VkPushTheKey (
+  IN OUT VK_CONTEXT *VkContext,
+  IN     UINT16     Unicode
+  )
+{
+  UINT8        IndexSt;
+  UINT8        IndexEd;
+  EFI_KEY_DATA KeyData;
+  EFI_STATUS   Status;
+  LIST_ENTRY   *Link;
+  VK_NOTIFY    *CurrentNotify;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkPushTheKey Start\n"));
+  //
+  // KeyBuffer
+  // [         0          ]
+  // [         1          ]<-IndexSt/*IndexEd
+  // [         2          ]
+  // [        ...         ]
+  // [MAX_KEY_BUF_SIZE - 1]
+  //
+  IndexSt = VkContext->KeyStartIndex;
+  IndexEd = VkContext->KeyEndIndex;
+
+  Status = EFI_SUCCESS;
+
+  //
+  // Check Keyboard Buffer if is full that will pop the first key
+  //
+  if (VkContext->IsSupportPartialKey &&
+    ((VkContext->KeyEndIndex + 2) % MAX_KEY_BUF_SIZE) == IndexSt) {
+    VkPopTheKey (VkContext, NULL);
+  }
+
+  if (((VkContext->KeyEndIndex + 1) % MAX_KEY_BUF_SIZE) == IndexSt) {
+    VkPopTheKey (VkContext, NULL);
+  }
+
+  KeyData.Key.ScanCode             = SCAN_NULL;
+  KeyData.Key.UnicodeChar          = CHAR_NULL;
+  KeyData.KeyState.KeyShiftState   = EFI_SHIFT_STATE_VALID;
+  KeyData.KeyState.KeyToggleState  = VkContext->KeyToggleState;
+  KeyData.KeyState.KeyToggleState &= ~EFI_CAPS_LOCK_ACTIVE;
+  KeyData.KeyState.KeyToggleState |= VkContext->IsCapsLockFlag ? EFI_CAPS_LOCK_ACTIVE : 0;
+
+  switch (Unicode) {
+  case VkKeyShift:
+    VkContext->IsShiftKeyFlag = !VkContext->IsShiftKeyFlag;
+    if (VkContext->PageNumber >= VkPage2 && VkContext->PageNumber <= VkPage3) {
+      VkContext->IsShiftKeyFlag ? VkContext->PageNumber++ : VkContext->PageNumber--;
+    }
+    VkContext->IsRedrawUpdateUI = TRUE;
+    break;
+
+  case VkKeyTwoPage:
+    switch (VkContext->PageNumber) {
+    case VkPage0:
+    case VkPage1:
+      VkContext->IsShiftKeyFlag = FALSE;
+      VkContext->PageNumber     = VkContext->IsShiftKeyFlag ? VkPage3 : VkPage2;
+      break;
+
+    case VkPage2:
+    case VkPage3:
+      VkContext->IsShiftKeyFlag = FALSE;
+      VkContext->PageNumber     = VkContext->IsCapsLockFlag ? VkPage1 : VkPage0;
+      break;
+
+    default:
+      break;
+    }
+    VkContext->IsRedrawUpdateUI = TRUE;
+    break;
+
+  case VkKeyCapslock:
+    VkContext->IsCapsLockFlag = !VkContext->IsCapsLockFlag;
+    if (VkContext->PageNumber >= VkPage0 && VkContext->PageNumber <= VkPage1) {
+      VkContext->IsCapsLockFlag ? VkContext->PageNumber++ : VkContext->PageNumber--;
+    }
+    KeyData.KeyState.KeyToggleState &= ~EFI_CAPS_LOCK_ACTIVE;
+    KeyData.KeyState.KeyToggleState |= VkContext->IsCapsLockFlag ? EFI_CAPS_LOCK_ACTIVE : 0;
+    VkContext->IsRedrawUpdateUI      = TRUE;
+    break;
+
+  default:
+    if ((Unicode & VkKeyScanMask) != 0) {
+      KeyData.Key.ScanCode    = Unicode & ~VkKeyScanMask;
+    } else {
+      KeyData.Key.UnicodeChar = Unicode;
+    }
+    break;
+  }
+
+  if (KeyData.Key.ScanCode == SCAN_NULL && KeyData.Key.UnicodeChar == CHAR_NULL) {
+    if (!VkContext->IsSupportPartialKey) {
+      goto End;
+    }
+  }
+
+  for (Link = GetFirstNode (&VkContext->NotifyList); !IsNull (&VkContext->NotifyList, Link); Link = GetNextNode (&VkContext->NotifyList, Link)) {
+    CurrentNotify = CR (Link, VK_NOTIFY, NotifyEntry, VK_NOTIFY_SIGNATURE);
+    //
+    // The key notification function needs to run at TPL_CALLBACK
+    // while current TPL is TPL_NOTIFY. It will be invoked in
+    // VkKeyNotifyProcessHandler() which runs at TPL_CALLBACK.
+    //
+    if (IsKeyRegistered (&CurrentNotify->KeyData, &KeyData)) {
+      VkContext->Keybuffer[IndexEd] = KeyData;
+      VkContext->KeyEndIndex        = ++IndexEd % MAX_KEY_BUF_SIZE;
+      gBS->SignalEvent (VkContext->KeyNotifyProcessEvent);
+    }
+  }
+  VkContext->Keybuffer[IndexEd] = KeyData;
+  VkContext->KeyEndIndex        = ++IndexEd % MAX_KEY_BUF_SIZE;
+
+  DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT, "VkPushTheKey Success, Status: %r\n", Status));
+  goto End;
+
+End:
+  DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT, "VkPushTheKey End\n"));
+  return Status;
+}
+
+/**
+  Process key notify.
+
+  @param[in] Event                 Indicates the event that invoke this function.
+  @param[in] Context               Indicates the calling context.
+
+**/
+VOID
+EFIAPI
+VkKeyNotifyProcessHandler (
+  IN  EFI_EVENT Event,
+  IN  VOID      *Context
+  )
+{
+  EFI_STATUS   Status;
+  VK_CONTEXT   *VkContext;
+  EFI_KEY_DATA KeyData;
+  LIST_ENTRY   *Link;
+  LIST_ENTRY   *NotifyList;
+  VK_NOTIFY    *CurrentNotify;
+  EFI_TPL      OldTpl;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyNotifyProcessHandler Start\n"));
+  VkContext = (VK_CONTEXT *) Context;
+  OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
+
+  //
+  // Invoke notification functions.
+  //
+  NotifyList = &VkContext->NotifyList;
+  Status = VkPopTheKey (VkContext, &KeyData);
+  if (EFI_ERROR (Status)) {
+    goto Error;
+  }
+
+  for (Link = GetFirstNode (NotifyList); !IsNull (NotifyList, Link); Link = GetNextNode (NotifyList, Link)) {
+    CurrentNotify = CR (Link, VK_NOTIFY, NotifyEntry, VK_NOTIFY_SIGNATURE);
+    if (IsKeyRegistered (&CurrentNotify->KeyData, &KeyData)) {
+      CurrentNotify->KeyNotificationFn (&KeyData);
+    }
+  }
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyNotifyProcessHandler Success, Status: %r\n", Status));
+  goto End;
+
+Error:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyNotifyProcessHandler Failed, Status: %r\n", Status));
+
+End:
+  gBS->RestoreTPL (OldTpl);
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyNotifyProcessHandler End\n"));
+}
+
+/**
+  Push the event mapping key index to the input key buffer.
+
+  @param[in]  VkContext        Address of an VK_CONTEXT structure.
+  @param[out] KeyItem          Key Item.
+  @param[out] Index            Index of Key Item.
+  @param[in]  TouchX           X position of finger touch.
+  @param[in]  TouchY           Y position of finger touch.
+
+  @retval TRUE                 Touch on Virtual Keyboard.
+  @retval FALSE                Not touch on Virtual Keyboard.
+
+**/
+BOOLEAN
+IsTouchVk (
+  IN  VK_CONTEXT *VkContext,
+  OUT VK_STRUCT  *KeyItem,
+  OUT UINT32     *Index,
+  IN  UINT32     TouchX,
+  IN  UINT32     TouchY
+  )
+{
+  for (*Index = 0; *Index < VkContext->NumOfKeysInfo; (*Index)++) {
+    if (VkContext->KeyboardBodyPtr[*Index].DisStartX < TouchX &&
+        VkContext->KeyboardBodyPtr[*Index].DisEndX   > TouchX &&
+        VkContext->KeyboardBodyPtr[*Index].DisStartY < TouchY &&
+        VkContext->KeyboardBodyPtr[*Index].DisEndY   > TouchY) {
+      break;
+    }
+  }
+  if (*Index != VkContext->NumOfKeysInfo) {
+    *KeyItem = VkContext->KeyboardBodyPtr[*Index];
+  }
+
+  return *Index != VkContext->NumOfKeysInfo;
+}
+
+/**
+  Call back function when ready to boot into OS.
+
+  It will clear the Virtual Keyboard.
+
+  @param[in] Event    Event whose notification function is being invoked.
+  @param[in] Context  Pointer to the VkContext.
+
+**/
+VOID
+EFIAPI
+VkReadyToBootCallBack (
+  IN EFI_EVENT Event,
+  IN VOID      *Context
+  )
+{
+  VK_CONTEXT                    *VkContext;
+  VkContext = (VK_CONTEXT *)Context;
+
+  HideVkBody (VkContext);
+  VkContext->TargetKeyboardDisplay  = VkDisplayAttributeNone;
+}
+
+/**
+  Timer event
+
+  This routine is called at TPL_VK_SYNC.
+
+  This routine polls for touch panel input.
+
+  @param[in] Event    Event whose notification function is being invoked.
+  @param[in] Context  Pointer to the notification function's context,
+                      which is implementation-dependent. Context corresponds
+                      to NotifyContext in CreateEventEx().
+
+**/
+VOID
+EFIAPI
+VkTimer (
+  IN EFI_EVENT Event,
+  IN VOID      *Context
+  )
+{
+  EFI_ABSOLUTE_POINTER_PROTOCOL *AbsolutePointer;
+  EFI_ABSOLUTE_POINTER_STATE    Point;
+  EFI_STATUS                    Status;
+  UINT32                        TouchX;
+  UINT32                        TouchY;
+  VK_CONTEXT                    *VkContext;
+  UINT32                        Index;
+  VK_STRUCT                     KeyItem;
+  UINT32                        Font;
+
+  DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT, "VkTimer Start\n"));
+  VkContext = (VK_CONTEXT *)Context;
+
+  //
+  // Update keyboard UI layout
+  //
+  CheckIconCleared (VkContext);
+  CheckScreenCleared (VkContext);
+  CheckBackgroundChanged (VkContext);
+  if (VkContext->IsRedrawUpdateUI) {
+    HideVkBody (VkContext);
+    DrawKeyboardLayout (VkContext);
+    VkContext->IsRedrawUpdateUI = FALSE;
+  }
+
+  //
+  // Error handle for invalid information
+  //
+  AbsolutePointer = VkContext->AbsolutePointer;
+  Status = gBS->CheckEvent (AbsolutePointer->WaitForInput);
+  if (EFI_ERROR (Status)) {
+    if (Status != EFI_NOT_READY) {
+      DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_VK_POINTS, "ERROR - VkContext->AbsolutePointer->WaitForInput->CheckEvent failed! Status: %r\n", Status));
+    }
+    goto Error;
+  }
+
+  Status = AbsolutePointer->GetState (AbsolutePointer, &Point);
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_VK_POINTS, "ERROR - GetState failed, Status: %r\n", Status));
+    goto Error;
+  }
+
+  if (VkContext->AbsolutePointer->Mode->AbsoluteMaxX <= Point.CurrentX) {
+    DEBUG ((
+      DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_VK_POINTS,
+      "ERROR - X value exceeds maximum: X: 0x%016Lx, MaxX: 0x%016Lx\n",
+      Point.CurrentX,
+      VkContext->AbsolutePointer->Mode->AbsoluteMaxX
+      ));
+    Status = EFI_PROTOCOL_ERROR;
+    goto Error;
+  }
+  if (VkContext->AbsolutePointer->Mode->AbsoluteMaxY <= Point.CurrentY) {
+    DEBUG ((
+      DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_VK_POINTS,
+      "ERROR - Y value exceeds maximum: Y: 0x%016Lx, MaxY: 0x%016Lx\n",
+      Point.CurrentY,
+      VkContext->AbsolutePointer->Mode->AbsoluteMaxY
+      ));
+    Status = EFI_PROTOCOL_ERROR;
+    goto Error;
+  }
+
+  //
+  // Update the touch active status
+  //
+  VkContext->TouchActive = ((Point.ActiveButtons & EFI_ABSP_TouchActive) != 0) ? TRUE : FALSE;
+  if (!VkContext->TouchActive) {
+    VkContext->KeyPressed = FALSE;
+  }
+  ConvertCoordinate (VkContext, Point, &TouchX, &TouchY);
+
+  if (!VkContext->KeyPressed &&
+      VkContext->TouchActive &&
+      IsTouchVk (VkContext, &KeyItem, &Index, TouchX, TouchY)) {
+    VkGetMappingFont (VkContext, KeyItem, &Font);
+    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_INFO,                   "VK Touch event is trigger!\n" ));
+    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_INFO | DEBUG_VK_POINTS, "TouchActive:            0x%04x  \n", VkContext->TouchActive));
+    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_INFO | DEBUG_VK_POINTS, "CurrentKeyboardDisplay: 0x%04x  \n", VkContext->CurrentKeyboardDisplay));
+    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_INFO | DEBUG_VK_POINTS, "X:                      0x%016Lx\n", Point.CurrentX));
+    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_INFO | DEBUG_VK_POINTS, "Y:                      0x%016Lx\n", Point.CurrentY));
+    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_INFO | DEBUG_VK_POINTS, "Z:                      0x%016Lx\n", Point.CurrentZ));
+    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_INFO | DEBUG_VK_POINTS, "Buttons:                0x%08x  \n", Point.ActiveButtons));
+    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_INFO | DEBUG_VK_POINTS, "MapKey Index:           0x%04x  \n", Index));
+    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_INFO | DEBUG_VK_POINTS, "Key Unicode:            0x%08x  \n", Font));
+
+    switch (Font) {
+    //
+    // Touch the small keyboard icon, show/hide the keyboard.
+    //
+    case VkKeyTypeMaximum:
+      KeyboardLayoutHandler (VkContext, Index);
+      break;
+
+    //
+    // Touch the key raw.
+    //
+    default:
+      if (VkContext->CurrentKeyboardDisplay == VkDisplayAttributeNone) {
+        break;
+      }
+      VkPushTheKey (VkContext, (UINT16) Font);
+    }
+    VkContext->KeyPressed = TRUE;
+  }
+
+  DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT, "VkTimer Success, Status: %r\n", Status));
+  goto End;
+
+Error:
+  DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT, "VkTimer Failed, Status: %r\n", Status));
+
+End:
+  DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT, "VkTimer End\n"));
+  return;
+}
+
+/**
+  VkTouchWaitForKey - SignalEvent when the keybuffer has keys.
+
+  @param[in] Event    Event whose notification function is being invoked.
+  @param[in] Context  Pointer to the notification function's context,
+                      which is implementation-dependent.  Context corresponds
+                      to NotifyContext in CreateEventEx().
+
+**/
+VOID
+EFIAPI
+VkTouchWaitForKey (
+  IN EFI_EVENT Event,
+  IN VOID      *Context
+  )
+{
+  VK_CONTEXT *VkContext;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkTouchWaitForKey Start\n"));
+  VkContext = (VK_CONTEXT*) Context;
+
+  if (VkContext->KeyStartIndex != VkContext->KeyEndIndex) {
+    DEBUG ((DEBUG_VK_KEYS, "Signal VkTouchWaitForKey\n"));
+    gBS->SignalEvent (Event);
+  }
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkTouchWaitForKey End\n"));
+}
+
+/**
+  Get image file data from BIOS image through specific ImageId.
+
+  @param[in] VkContext      Address of an VK_CONTEXT structure.
+  @param[in] ImageId        Guid to get specific image file used.
+
+  @retval EFI_IMAGE_INPUT   Image data on BIOS image.
+
+**/
+EFI_IMAGE_INPUT*
+VkGetImage (
+  IN VK_CONTEXT   *VkContext,
+  IN EFI_IMAGE_ID ImageId
+  )
+{
+  EFI_STATUS      Status;
+  EFI_IMAGE_INPUT Image;
+  EFI_IMAGE_INPUT *VkImage;
+
+
+  Status = VkContext->HiiImageEx->GetImageEx (
+                                    VkContext->HiiImageEx,
+                                    VkContext->HiiHandle,
+                                    ImageId,
+                                    &Image
+                                    );
+  if (EFI_ERROR (Status)) {
+    ASSERT_EFI_ERROR (Status);
+  }
+
+  VkImage = AllocateCopyPool (sizeof (EFI_IMAGE_INPUT), &Image);
+  if (VkImage == NULL) {
+    ASSERT_EFI_ERROR (EFI_OUT_OF_RESOURCES);
+    return NULL;
+  }
+
+  return VkImage;
+}
+
+/**
+  Dump partial debug message on VkContext.
+
+  @param[in] VkContext        Address of an VK_CONTEXT structure.
+
+**/
+VOID
+VkDumpContext (
+  IN VK_CONTEXT *VkContext
+  )
+{
+  DEBUG ((
+    DEBUG_VK_ROUTINE_ENTRY_EXIT,
+    "VkContext->Signature: 0x%016x\n",
+    VkContext->Signature
+    ));
+  DEBUG ((
+    DEBUG_VK_ROUTINE_ENTRY_EXIT,
+    "VkContext->Controller: 0x%016x\n",
+    VkContext->Controller
+    ));
+  DEBUG ((
+    DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_VK_GRAPHICS_INFO,
+    "VkContext->GraphicsOutput->Mode->MaxMode: 0x%08x\n",
+    VkContext->GraphicsOutput->Mode->MaxMode
+    ));
+  DEBUG ((
+    DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_VK_GRAPHICS_INFO,
+    "VkContext->GraphicsOutput->Mode->Mode: 0x%08x\n",
+    VkContext->GraphicsOutput->Mode->Mode
+    ));
+  DEBUG ((
+    DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_VK_GRAPHICS_INFO,
+    "VkContext->GraphicsOutput->Mode->Info->HorizontalResolution: 0x%08x\n",
+    VkContext->GraphicsOutput->Mode->Info->HorizontalResolution
+    ));
+  DEBUG ((
+    DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_VK_GRAPHICS_INFO,
+    "VkContext->GraphicsOutput->Mode->Info->VerticalResolution: 0x%08x\n",
+    VkContext->GraphicsOutput->Mode->Info->VerticalResolution
+    ));
+  DEBUG ((
+    DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_VK_POINTS,
+    "VkContext->AbsolutePointer->Mode X: 0x%016Lx - 0x%016Lx\n",
+    VkContext->AbsolutePointer->Mode->AbsoluteMinX,
+    VkContext->AbsolutePointer->Mode->AbsoluteMaxX
+    ));
+  DEBUG ((
+    DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_VK_POINTS,
+    "VkContext->AbsolutePointer->Mode Y: 0x%016Lx - 0x%016Lx\n",
+    VkContext->AbsolutePointer->Mode->AbsoluteMinY,
+    VkContext->AbsolutePointer->Mode->AbsoluteMaxY
+    ));
+  DEBUG ((
+    DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_VK_POINTS,
+    "VkContext->AbsolutePointer->Mode Z: 0x%016Lx - 0x%016Lx\n",
+    VkContext->AbsolutePointer->Mode->AbsoluteMinZ,
+    VkContext->AbsolutePointer->Mode->AbsoluteMaxZ
+    ));
+  DEBUG ((
+    DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_VK_POINTS,
+    "VkContext->AbsolutePointer->Mode->Attributes: 0x%08x\n",
+    VkContext->AbsolutePointer->Mode->Attributes
+    ));
+}
+
+/**
+  Start the virtual keyboard driver
+
+  This routine allocates the necessary resources for the driver.
+
+  This routine is called by VirtualKeyboardDriverStart to complete the driver
+  initialization.
+
+  @param[in, out] VkContext        Address of an VK_CONTEXT structure
+  @param[in]      Controller       Handle of device to work with.
+
+  @retval EFI_SUCCESS              Driver API properly initialized
+
+**/
+EFI_STATUS
+VkApiStart (
+  IN OUT VK_CONTEXT *VkContext,
+  IN EFI_HANDLE     Controller
+  )
+{
+  EFI_STATUS                        Status;
+  EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *SimpleEx;
+  EFI_KEY_DATA                      KeyData;
+  EFI_HANDLE                        NotifyHandle;
+  EFI_EVENT                         ReadyToBootEvent;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkApiStart Start\n"));
+
+  Status = gBS->CreateEvent (
+                  EVT_NOTIFY_SIGNAL,
+                  TPL_CALLBACK,
+                  VkKeyNotifyProcessHandler,
+                  VkContext,
+                  &VkContext->KeyNotifyProcessEvent
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR - Failed to create VkContext->KeyNotifyProcessEvent, Status: %r\n", Status));
+    goto Error;
+  }
+
+  Status = gBS->CreateEvent (
+                  EVT_NOTIFY_WAIT,
+                  TPL_NOTIFY,
+                  VkTouchWaitForKey,
+                  VkContext,
+                  &(VkContext->SimpleTextIn.WaitForKey)
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR - Failed to create VkContext->SimpleTextIn.WaitForKey, Status: %r\n", Status));
+    goto Error;
+  }
+
+  Status = gBS->CreateEvent (
+                  EVT_NOTIFY_WAIT,
+                  TPL_NOTIFY,
+                  VkTouchWaitForKey,
+                  VkContext,
+                  &(VkContext->SimpleTextInEx.WaitForKeyEx)
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR - Failed to create VkContext->SimpleTextInEx.WaitForKeyEx, Status %r\n", Status));
+    goto Error;
+  }
+
+  Status = gBS->CreateEvent (
+                  EVT_TIMER | EVT_NOTIFY_SIGNAL,
+                  TPL_VK_SYNC,
+                  VkTimer,
+                  (VOID *)VkContext,
+                  &(VkContext->TimerEvent)
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR - Failed to create the timer event, Status: %r\n", Status));
+    goto Error;
+  }
+
+  Status = gBS->SetTimer (
+                  VkContext->TimerEvent,
+                  TimerPeriodic,
+                  (UINT64) VK_POLL_INTERVAL
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR - Failed to set the timer event, Status: %r\n", Status));
+    goto Error;
+  }
+
+  //
+  // Create event to clear keyboard before boot into OS.
+  //
+  Status = EfiCreateEventReadyToBootEx (
+             TPL_CALLBACK,
+             VkReadyToBootCallBack,
+             (VOID *)VkContext,
+             &ReadyToBootEvent
+             );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR - Failed to create ReadyToBootEvent, Status: %r\n", Status));
+    goto Error;
+  }
+
+  Status = gBS->LocateProtocol (
+                  &gEfiHiiImageExProtocolGuid,
+                  NULL,
+                  (VOID **) &VkContext->HiiImageEx
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR - Failed to open HiiImageEx protocol, Status: %r\n", Status));
+    goto Error;
+  }
+
+  //
+  // Initialize VkContext
+  //
+  VkContext->Signature                          = VK_SIGNATURE;
+  VkContext->Controller                         = Controller;
+  VkContext->SimpleTextIn.Reset                 = VkKeyboardReset;
+  VkContext->SimpleTextIn.ReadKeyStroke         = VkKeyboardReadKeyStroke;
+  VkContext->SimpleTextInEx.Reset               = VkKeyboardResetEx;
+  VkContext->SimpleTextInEx.ReadKeyStrokeEx     = VkKeyboardReadKeyStrokeEx;
+  VkContext->SimpleTextInEx.SetState            = VkKeyboardSetState;
+  VkContext->SimpleTextInEx.RegisterKeyNotify   = VkKeyboardRegisterKeyNotify;
+  VkContext->SimpleTextInEx.UnregisterKeyNotify = VkKeyboardUnregisterKeyNotify;
+  VkContext->IsIconShowed                       = FALSE;
+  VkContext->IsBackgroundChanged                = FALSE;
+  VkContext->PageNumber                         = 0;
+  VkContext->CurrentKeyboardDisplay             = VkDisplayAttributeNone;
+  VkContext->TargetKeyboardDisplay              = VkDisplayAttributeNone;
+  VkContext->VkBodyBackgroundBltBuffer          = NULL;
+  VkContext->VkBodyCompoundBltBuffer            = NULL;
+  VkContext->VkBodyBltSize                      = 0;
+  VkContext->VkBodyBltStartX                    = 0;
+  VkContext->VkBodyBltStartY                    = 0;
+  VkContext->VkBodyBltHeight                    = 0;
+  VkContext->VkBodyBltWidth                     = 0;
+  VkContext->IconBltBuffer                      = NULL;
+  VkContext->IconBltSize                        = 0;
+  VkContext->IconReDrawCheck                    = 0;
+  VkContext->FullIconUpdatedFlag                = FALSE;
+  VkContext->SimIconUpdatedFlag                 = FALSE;
+  VkContext->KeyStartIndex                      = 0;
+  VkContext->KeyEndIndex                        = 0;
+  VkContext->KeyToggleState                     = EFI_TOGGLE_STATE_VALID;
+  VkContext->SmallIcon                          = VkGetImage (VkContext, IMAGE_TOKEN (IMG_VK_SIMPLEICON));
+  VkContext->FullIcon                           = VkGetImage (VkContext, IMAGE_TOKEN (IMG_VK_FULLICON));
+  VkContext->SimKeyBody                         = VkGetImage (VkContext, IMAGE_TOKEN (IMG_VK_SIMPLEKEYBOARD));
+  VkContext->DigKeyBody                         = VkGetImage (VkContext, IMAGE_TOKEN (IMG_VK_DIGITKEYBOARD));
+  VkContext->CapLeKeyBody                       = VkGetImage (VkContext, IMAGE_TOKEN (IMG_VK_CAPITALLETTERKEYBOARD));
+
+  InitializeListHead (&VkContext->NotifyList);
+
+  Status = SetCharacterPosition (VkContext, 800, 600);
+  ASSERT_EFI_ERROR (Status);
+
+  Status = DrawKeyboardLayout (VkContext);
+  ASSERT_EFI_ERROR (Status);
+
+  Status = HideVkBody (VkContext);
+  ASSERT_EFI_ERROR (Status);
+
+  Status = HideVkIcon (VkContext);
+  ASSERT_EFI_ERROR (Status);
+
+  DEBUG_CODE (
+    VkDumpContext (VkContext);
+  );
+
+  Status = gBS->HandleProtocol (
+                  gST->ConsoleInHandle,
+                  &gEfiSimpleTextInputExProtocolGuid,
+                  (VOID **)&SimpleEx
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR - Failed to found ConIn Protocol, Status: %r\n", Status));
+    goto Error;
+  }
+
+  KeyData.KeyState.KeyToggleState = 0;
+  KeyData.KeyState.KeyShiftState  = 0;
+  KeyData.Key.ScanCode            = SCAN_ESC;
+  KeyData.Key.UnicodeChar         = CHAR_NULL;
+  NotifyHandle                    = NULL;
+  Status = SimpleEx->RegisterKeyNotify (
+                       SimpleEx,
+                       &KeyData,
+                       VkNotifyKeyCallback,
+                       &NotifyHandle
+                       );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR - Failed to register 'Esc', Status: %r\n", Status));
+    goto Error;
+  }
+
+  KeyData.KeyState.KeyToggleState = 0;
+  KeyData.KeyState.KeyShiftState  = 0;
+  KeyData.Key.ScanCode            = SCAN_NULL;
+  KeyData.Key.UnicodeChar         = CHAR_CARRIAGE_RETURN;
+  Status = SimpleEx->RegisterKeyNotify (
+                       SimpleEx,
+                       &KeyData,
+                       VkNotifyKeyCallback,
+                       &NotifyHandle
+                       );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR - Failed to register 'Enter', Status: %r\n", Status));
+    goto Error;
+  }
+
+  for (KeyData.Key.UnicodeChar = L' '; KeyData.Key.UnicodeChar <= L'~'; KeyData.Key.UnicodeChar++) {
+    Status = SimpleEx->RegisterKeyNotify (
+                         SimpleEx,
+                         &KeyData,
+                         VkNotifyKeyCallback,
+                         &NotifyHandle
+                         );
+    if (EFI_ERROR (Status)) {
+      DEBUG ((
+        DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR,
+        "ERROR - Failed to register '%c', Status: %r\n",
+        KeyData.Key.UnicodeChar,
+        Status
+        ));
+      break;
+    }
+  }
+  if (EFI_ERROR(Status)) {
+    goto Error;
+  }
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkApiStart Success, Status: %r\n", Status));
+  goto End;
+
+Error:
+  VkApiStop (VkContext);
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkApiStart Failed, Status: %r\n", Status));
+
+End:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkApiStart End\n"));
+  return Status;
+}
+
+/**
+  Stop the virtual keyboard driver
+
+  This routine releases the resources allocated by VKApiStart.
+
+  This routine is called by VirtualKeyboardDriverStop to initiate the driver
+  shutdown.
+
+  @param[in] VkContext        Address of an VK_CONTEXT structure
+
+**/
+VOID
+VkApiStop (
+  IN VK_CONTEXT *VkContext
+  )
+{
+  EFI_STATUS Status;
+  VK_NOTIFY  *NotifyNode;
+  LIST_ENTRY *NotifyList;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkApiStop Start\n"));
+
+  Status = gBS->SetTimer (VkContext->TimerEvent, TimerCancel, 0);
+  ASSERT_EFI_ERROR (Status);
+
+  if (VkContext->KeyNotifyProcessEvent != NULL) {
+    Status = gBS->CloseEvent (VkContext->KeyNotifyProcessEvent);
+    ASSERT_EFI_ERROR (Status);
+    VkContext->KeyNotifyProcessEvent = NULL;
+  }
+
+  if (VkContext->TimerEvent != NULL) {
+    Status = gBS->CloseEvent (VkContext->TimerEvent);
+    ASSERT_EFI_ERROR (Status);
+    VkContext->TimerEvent = NULL;
+  }
+
+  if (VkContext->SimpleTextIn.WaitForKey != NULL) {
+    Status = gBS->CloseEvent (VkContext->SimpleTextIn.WaitForKey);
+    ASSERT_EFI_ERROR (Status);
+    VkContext->SimpleTextIn.WaitForKey = NULL;
+  }
+
+  if (VkContext->SimpleTextInEx.WaitForKeyEx != NULL) {
+    Status = gBS->CloseEvent (VkContext->SimpleTextInEx.WaitForKeyEx);
+    ASSERT_EFI_ERROR (Status);
+    VkContext->SimpleTextInEx.WaitForKeyEx = NULL;
+  }
+
+  NotifyList = &VkContext->NotifyList;
+  if (NotifyList != NULL) {
+    while (!IsListEmpty (NotifyList)) {
+      NotifyNode = CR (NotifyList->ForwardLink, VK_NOTIFY, NotifyEntry, VK_NOTIFY_SIGNATURE);
+      RemoveEntryList (NotifyList->ForwardLink);
+      gBS->FreePool (NotifyNode);
+    }
+  }
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkApiStop End\n"));
+}
+
+/**
+  Reset the input device and optionally run diagnostics
+
+  @param[in] This                 Protocol instance pointer.
+  @param[in] ExtendedVerification Driver may perform diagnostics on reset.
+
+  @retval EFI_SUCCESS             The device was reset.
+  @retval EFI_DEVICE_ERROR        The device is not functioning properly and could not be reset.
+
+**/
+EFI_STATUS
+EFIAPI
+VkKeyboardReset (
+  IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,
+  IN BOOLEAN                        ExtendedVerification
+  )
+{
+  EFI_STATUS Status;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardReset Start\n"));
+  Status = EFI_SUCCESS;
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardReset End\n"));
+  return Status;
+}
+
+/**
+  Resets the input device hardware.
+
+  The Reset() function resets the input device hardware. As part
+  of initialization process, the firmware/device will make a quick
+  but reasonable attempt to verify that the device is functioning.
+  If the ExtendedVerification flag is TRUE the firmware may take
+  an extended amount of time to verify the device is operating on
+  reset. Otherwise the reset operation is to occur as quickly as
+  possible. The hardware verification process is not defined by
+  this specification and is left up to the platform firmware or
+  driver to implement.
+
+  @param[in] This                 A pointer to the EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL instance.
+
+  @param[in] ExtendedVerification Indicates that the driver may perform a more exhaustive
+                                  verification operation of the device during reset.
+
+  @retval EFI_SUCCESS             The device was reset.
+  @retval EFI_DEVICE_ERROR        The device is not functioning correctly and could not be reset.
+
+**/
+EFI_STATUS
+EFIAPI
+VkKeyboardResetEx (
+  IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+  IN BOOLEAN                           ExtendedVerification
+  )
+{
+  EFI_STATUS Status;
+  VK_CONTEXT *VkContext;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardResetEx Start\n"));
+
+  Status = EFI_SUCCESS;
+  if (This == NULL) {
+    Status = EFI_INVALID_PARAMETER;
+    goto Error;
+  }
+
+  VkContext = VK_CONTEXT_FROM_SIMPLETEXTINEX_PROTOCOL (This);
+
+  Status = VkContext->SimpleTextIn.Reset (&VkContext->SimpleTextIn, ExtendedVerification);
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_KEYS, "ERROR - Failed to VK reset, Status: %r\n", Status));
+    goto Error;
+  }
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardResetEx Success, Status: %r\n", Status));
+  goto End;
+
+Error:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardResetEx Failed, Status: %r\n", Status));
+
+End:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardResetEx End\n"));
+  return Status;
+}
+
+/**
+  Reads the next keystroke from the input device. The WaitForKey Event can
+  be used to test for existence of a keystroke via WaitForEvent () call.
+
+  @param[in]  This         Protocol instance pointer.
+  @param[out] Key          Driver may perform diagnostics on reset.
+
+  @retval EFI_SUCCESS      The keystroke information was returned.
+  @retval EFI_NOT_READY    There was no keystroke data available.
+  @retval EFI_DEVICE_ERROR The keystroke information was not returned due to
+                           hardware errors.
+
+**/
+EFI_STATUS
+EFIAPI
+VkKeyboardReadKeyStroke (
+  IN  EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,
+  OUT EFI_INPUT_KEY                  *Key
+  )
+{
+  EFI_STATUS    Status;
+  VK_CONTEXT    *VkContext;
+  EFI_KEY_DATA  TmpKeyData;
+  EFI_TPL       OldTpl;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardReadKeyStroke Start\n"));
+
+  OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
+  if (This == NULL || Key == NULL) {
+    Status = EFI_INVALID_PARAMETER;
+    goto Error;
+  }
+
+  VkContext = VK_CONTEXT_FROM_PROTOCOL (This);
+
+  Status = VkKeyboardReadKeyStrokeEx (&VkContext->SimpleTextInEx, &TmpKeyData);
+  if (EFI_ERROR (Status)) {
+    goto Error;
+  }
+  *Key = TmpKeyData.Key;
+
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardReadKeyStroke Success, Status: %r\n", Status));
+  goto End;
+
+Error:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardReadKeyStroke Failed, Status: %r\n", Status));
+
+End:
+  gBS->RestoreTPL (OldTpl);
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardReadKeyStroke End\n"));
+  return Status;
+}
+
+/**
+  Reads the next keystroke from the input device.
+
+  @param[in]  This               Protocol instance pointer.
+  @param[out] KeyData            A pointer to a buffer that is filled in with the keystroke
+                                 state data for the key that was pressed.
+
+  @retval EFI_SUCCESS            The keystroke information was returned.
+  @retval EFI_NOT_READY          There was no keystroke data available.
+  @retval EFI_INVALID_PARAMETER  This or KeyData is NULL.
+
+**/
+EFI_STATUS
+EFIAPI
+VkKeyboardReadKeyStrokeEx (
+  IN  EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+  OUT EFI_KEY_DATA                      *KeyData
+  )
+{
+  VK_CONTEXT        *VkContext;
+  EFI_STATUS        Status;
+  EFI_TPL           OldTpl;
+  EFI_KEY_DATA      TmpKeyData;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardReadKeyStrokeEx Start\n"));
+
+  OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
+  if (This == NULL || KeyData == NULL) {
+    Status = EFI_INVALID_PARAMETER;
+    goto Error;
+  }
+
+  VkContext = VK_CONTEXT_FROM_SIMPLETEXTINEX_PROTOCOL (This);
+
+  while (TRUE) {
+    Status = VkPopTheKey (VkContext, &TmpKeyData);
+    if (EFI_ERROR (Status)) {
+      DEBUG ((DEBUG_VK_KEYS, "ERROR - Failed to VkPopTheKey check whether keybuffer is empty, Status: %r\n", Status));
+      goto Error;
+    }
+    if (TmpKeyData.Key.ScanCode != SCAN_NULL || TmpKeyData.Key.UnicodeChar != CHAR_NULL) {
+      break;
+    }
+  }
+  *KeyData = TmpKeyData;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardReadKeyStrokeEx Success, Status: %r\n", Status));
+  goto End;
+
+Error:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardReadKeyStrokeEx Failed, Status: %r\n", Status));
+
+End:
+  gBS->RestoreTPL (OldTpl);
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardReadKeyStrokeEx End\n"));
+  return Status;
+}
+
+/**
+  Set certain state for the input device.
+
+  @param[in] This                 Protocol instance pointer.
+  @param[in] KeyToggleState       A pointer to the EFI_KEY_TOGGLE_STATE to set the
+                                  state for the input device.
+
+  @retval EFI_SUCCESS             The device state was set appropriately.
+  @retval EFI_INVALID_PARAMETER   This or KeyToggleState is NULL.
+
+**/
+EFI_STATUS
+EFIAPI
+VkKeyboardSetState (
+  IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+  IN EFI_KEY_TOGGLE_STATE              *KeyToggleState
+  )
+{
+  EFI_STATUS Status;
+  VK_CONTEXT *VkContext;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardSetState Start\n"));
+
+  Status = EFI_SUCCESS;
+  if (This == NULL || KeyToggleState == NULL) {
+    Status = EFI_INVALID_PARAMETER;
+    goto Error;
+  }
+
+  VkContext = VK_CONTEXT_FROM_SIMPLETEXTINEX_PROTOCOL (This);
+
+  VkContext->KeyToggleState      = *KeyToggleState;
+  VkContext->IsCapsLockFlag      = (*KeyToggleState & EFI_CAPS_LOCK_ACTIVE) == EFI_CAPS_LOCK_ACTIVE;
+  VkContext->IsSupportPartialKey = (*KeyToggleState & EFI_KEY_STATE_EXPOSED) == EFI_KEY_STATE_EXPOSED;
+
+  if (VkContext->PageNumber >= VkPage0 && VkContext->PageNumber <= VkPage1) {
+    VkContext->PageNumber = VkContext->IsCapsLockFlag ? VkPage1 : VkPage0;
+  }
+
+  HideVkBody (VkContext);
+  DrawKeyboardLayout (VkContext);
+
+  DEBUG ((DEBUG_VK_KEYS | DEBUG_INFO, "VkContext->KeyToggleState:      %02x\n", VkContext->KeyToggleState));
+  DEBUG ((DEBUG_VK_KEYS | DEBUG_INFO, "VkContext->IsCapsLockFlag:      %02x\n", VkContext->IsCapsLockFlag));
+  DEBUG ((DEBUG_VK_KEYS | DEBUG_INFO, "VkContext->IsSupportPartialKey: %02x\n", VkContext->IsSupportPartialKey));
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardSetState Success, Status: %r\n", Status));
+  goto End;
+
+Error:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardSetState Failed, Status: %r\n", Status));
+
+End:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardSetState End\n"));
+  return Status;
+}
+
+/**
+  Register a notification function for a particular keystroke for the input device.
+
+  @param[in]  This                        Protocol instance pointer.
+  @param[in]  KeyData                     A pointer to a buffer that is filled in with the keystroke
+                                          information data for the key that was pressed.
+  @param[in]  KeyNotificationFunction     Points to the function to be called when the key
+                                          sequence is typed specified by KeyData.
+  @param[out] NotifyHandle                Points to the unique handle assigned to the registered notification.
+
+  @retval EFI_SUCCESS                     The notification function was registered successfully.
+  @retval EFI_OUT_OF_RESOURCES            Unable to allocate resources for necessary data structures.
+  @retval EFI_INVALID_PARAMETER           KeyData or NotifyHandle or KeyNotificationFunction is NULL.
+
+**/
+EFI_STATUS
+EFIAPI
+VkKeyboardRegisterKeyNotify (
+  IN  EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+  IN  EFI_KEY_DATA                      *KeyData,
+  IN  EFI_KEY_NOTIFY_FUNCTION           KeyNotificationFunction,
+  OUT EFI_HANDLE                        *NotifyHandle
+  )
+{
+  EFI_STATUS Status;
+  EFI_TPL    OldTpl;
+  VK_CONTEXT *VkContext;
+  LIST_ENTRY *Link;
+  VK_NOTIFY  *CurrentNotify;
+  VK_NOTIFY  *NewNotify;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardRegisterKeyNotify Start\n"));
+
+  //
+  // Enter critical section
+  //
+  OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
+  Status = EFI_SUCCESS;
+  if (This == NULL || KeyData == NULL || NotifyHandle == NULL || KeyNotificationFunction == NULL) {
+    Status = EFI_INVALID_PARAMETER;
+    goto Error;
+  }
+  VkContext = VK_CONTEXT_FROM_SIMPLETEXTINEX_PROTOCOL (This);
+
+
+  //
+  // Return EFI_SUCCESS if the (KeyData, NotificationFunction) is already registered.
+  //
+  for (Link = VkContext->NotifyList.ForwardLink; Link != &VkContext->NotifyList; Link = Link->ForwardLink) {
+    CurrentNotify = CR (Link, VK_NOTIFY, NotifyEntry, VK_NOTIFY_SIGNATURE);
+    if (IsKeyRegistered (&CurrentNotify->KeyData, KeyData)) {
+      if (CurrentNotify->KeyNotificationFn == KeyNotificationFunction) {
+        *NotifyHandle = CurrentNotify;
+        Status = EFI_SUCCESS;
+        goto End;
+      }
+    }
+  }
+
+  //
+  // Allocate resource to save the notification function
+  //
+  NewNotify = (VK_NOTIFY *) AllocateZeroPool (sizeof (VK_NOTIFY));
+  if (NewNotify == NULL) {
+    Status = EFI_OUT_OF_RESOURCES;
+    goto Error;
+  }
+
+  NewNotify->Signature         = VK_NOTIFY_SIGNATURE;
+  NewNotify->KeyNotificationFn = KeyNotificationFunction;
+  CopyMem (&NewNotify->KeyData, KeyData, sizeof (EFI_KEY_DATA));
+  InsertTailList (&VkContext->NotifyList, &NewNotify->NotifyEntry);
+
+  *NotifyHandle = NewNotify;
+  Status        = EFI_SUCCESS;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardRegisterKeyNotify Success, Status: %r\n", Status));
+  goto End;
+
+Error:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardRegisterKeyNotify Failed, Status: %r\n", Status));
+
+End:
+  //
+  // Leave critical section and return
+  //
+  gBS->RestoreTPL (OldTpl);
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardRegisterKeyNotify End\n"));
+  return Status;
+}
+
+/**
+  Remove a registered notification function from a particular keystroke.
+
+  @param[in] This                Protocol instance pointer.
+  @param[in] NotificationHandle  The handle of the notification function being unregistered.
+
+  @retval EFI_SUCCESS            The notification function was unregistered successfully.
+  @retval EFI_INVALID_PARAMETER  The NotificationHandle is invalid
+
+**/
+EFI_STATUS
+EFIAPI
+VkKeyboardUnregisterKeyNotify (
+  IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+  IN EFI_HANDLE                        NotificationHandle
+  )
+{
+  EFI_STATUS Status;
+  VK_CONTEXT *VkContext;
+  EFI_TPL    OldTpl;
+  LIST_ENTRY *Link;
+  VK_NOTIFY  *CurrentNotify;
+  BOOLEAN    IsFindNotifyHandle;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardUnregisterKeyNotify Start\n"));
+
+  //
+  // Enter critical section
+  //
+  OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
+  Status = EFI_SUCCESS;
+  if (This == NULL || NotificationHandle == NULL) {
+    Status = EFI_INVALID_PARAMETER;
+    goto Error;
+  }
+  VkContext = VK_CONTEXT_FROM_SIMPLETEXTINEX_PROTOCOL (This);
+
+  IsFindNotifyHandle = FALSE;
+  for (Link = VkContext->NotifyList.ForwardLink; Link != &VkContext->NotifyList; Link = Link->ForwardLink) {
+    CurrentNotify = CR (Link, VK_NOTIFY, NotifyEntry, VK_NOTIFY_SIGNATURE);
+    if (CurrentNotify == NotificationHandle) {
+      //
+      // Remove the notification function from NotifyList and free resources
+      //
+      RemoveEntryList (&CurrentNotify->NotifyEntry);
+
+      gBS->FreePool (CurrentNotify);
+      IsFindNotifyHandle = TRUE;
+      break;
+    }
+  }
+
+  if (!IsFindNotifyHandle) {
+    Status = EFI_INVALID_PARAMETER;
+    goto Error;
+  }
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardUnregisterKeyNotify Success, Status: %r\n", Status));
+  goto End;
+
+Error:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardUnregisterKeyNotify Failed, Status: %r\n", Status));
+
+End:
+  //
+  // Leave critical section and return
+  //
+  gBS->RestoreTPL (OldTpl);
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardUnregisterKeyNotify End\n"));
+  return Status;
+}
diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/KeyboardLayout.c b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/KeyboardLayout.c
new file mode 100644
index 0000000000..744c4324d3
--- /dev/null
+++ b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/KeyboardLayout.c
@@ -0,0 +1,1438 @@
+/** @file
+  Virtural Keyboard Layout Engine
+
+  Copyright (c) 2012 - 2020, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "VirtualKeyboard.h"
+
+//
+// 1.FullKeyboardBody
+// Follow below design
+//   (1).\KeyboardLayout\CapitalLetterKeyboard.bmp
+//   (2).\KeyboardLayout\DigitKeyboard.bmp
+// Based on keyboard's (startX, startY)
+//
+// Page0Font
+// +---+---+---+---+---+---+---+---+---+---+---+
+// | q | w | e | r | t | y | u | i | o | p |<X|| Line 0
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+// | | a | s | d | f | g | h | j | k | l | F2| | Line 1
+// +-+---+---+---+---+---+---+---+---+---+---+-+
+// |Caps | z | x | c | v | b | n | m |aU |Enter| Line 2
+// +-----+---+---+---+---+---+---+---+---+---+-+
+// | Esc |12#|       Space       |aL |aD |aR | | Line 3
+// +-----+---+-------------------+---+---+---+-+
+//
+// Page1Font
+// +---+---+---+---+---+---+---+---+---+---+---+
+// | Q | W | E | R | T | Y | U | I | O | P |<X|| Line 0
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+// | | A | S | D | F | G | H | J | K | L | F2| | Line 1
+// +-+---+---+---+---+---+---+---+---+---+---+-+
+// |Caps | Z | X | C | V | B | N | M |aU |Enter| Line 2
+// +-----+---+---+---+---+---+---+---+---+---+-+
+// | Esc |12#|       Space       |aL |aD |aR | | Line 3
+// +-----+---+-------------------+---+---+---+-+
+//
+// Page2Font
+// +---+---+---+---+---+---+---+---+---+---+---+
+// | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 |<X|| Line 0
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+// | |F1 |F2 |F3 |F4 |F5 |F6 |F7 |F8 |F9 |F10| | Line 1
+// +-+---+---+---+---+---+---+---+---+---+---+-+
+// |Shift| . | ; | ' | , | . | / |F11|F12|Enter| Line 2
+// +-----+---+---+---+---+---+---+---+---+---+-+
+// | Esc |12#|       Space       | \ | - | = | | Line 3
+// +-----+---+-------------------+---+---+---+-+
+//
+// Page3Font
+// +---+---+---+---+---+---+---+---+---+---+---+
+// | ! | @ | # | $ | % | ^ | & | * | ( | ) |<X|| Line 0
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+// | |F1 |F2 |F3 |F4 |F5 |F6 |F7 |F8 |F9 |F10| | Line 1
+// +-+---+---+---+---+---+---+---+---+---+---+-+
+// |Shift| ~ | : | " | < | > | ? |F11|F12|Enter| Line 2
+// +-----+---+---+---+---+---+---+---+---+---+-+
+// | Esc |12#|       Space       | | | _ | + | | Line 3
+// +-----+---+-------------------+---+---+---+-+
+//
+// 2.Screen Corner
+// Follow below design
+//   (1).\KeyboardLayout\SimpleIcon.bmp # Screen Corner A/B
+//   (2).\KeyboardLayout\FullIcon.bmp   # Screen Corner C/D
+// +-+------------------------------------+-+
+// |A|                                    |C|
+// +-+                                    +-+
+// |                                        |
+// |                                        |
+// |                                        |
+// |                                        |
+// |                                        |
+// |                                        |
+// +-+                                    +-+
+// |B|                                    |D|
+// +-+------------------------------------+-+
+//
+VK_STRUCT mFullKeyboardBody[] = {
+  // StartX  StartY  EndX    EndY     Page0Font            Page1Font            Page2Font            Page3Font
+  // Line 0
+  {  0x0000, 0x0000, 0x0032, 0x0032, {L'q',                L'Q',                L'1',                L'!'            }},
+  {  0x0032, 0x0000, 0x0064, 0x0032, {L'w',                L'W',                L'2',                L'@'            }},
+  {  0x0064, 0x0000, 0x0096, 0x0032, {L'e',                L'E',                L'3',                L'#'            }},
+  {  0x0096, 0x0000, 0x00C8, 0x0032, {L'r',                L'R',                L'4',                L'$'            }},
+  {  0x00C8, 0x0000, 0x00FA, 0x0032, {L't',                L'T',                L'5',                L'%'            }},
+  {  0x00FA, 0x0000, 0x012C, 0x0032, {L'y',                L'Y',                L'6',                L'^'            }},
+  {  0x012C, 0x0000, 0x015E, 0x0032, {L'u',                L'U',                L'7',                L'&'            }},
+  {  0x015E, 0x0000, 0x0190, 0x0032, {L'i',                L'I',                L'8',                L'*'            }},
+  {  0x0190, 0x0000, 0x01C2, 0x0032, {L'o',                L'O',                L'9',                L'('            }},
+  {  0x01C2, 0x0000, 0x01F4, 0x0032, {L'p',                L'P',                L'0',                L')'            }},
+  {  0x01F4, 0x0000, 0x0226, 0x0032, {VkKeyBackspace,      VkKeyBackspace,      VkKeyBackspace,      VkKeyBackspace  }},
+  // Line 1
+  {  0x0000, 0x0032, 0x0019, 0x0064, {VkKeyNull,           VkKeyNull,           VkKeyNull,           VkKeyNull       }},
+  {  0x0019, 0x0032, 0x004B, 0x0064, {L'a',                L'A',                VkKeyF1,             VkKeyF1         }},
+  {  0x004B, 0x0032, 0x007D, 0x0064, {L's',                L'S',                VkKeyF2,             VkKeyF2         }},
+  {  0x007D, 0x0032, 0x00AF, 0x0064, {L'd',                L'D',                VkKeyF3,             VkKeyF3         }},
+  {  0x00AF, 0x0032, 0x00E1, 0x0064, {L'f',                L'F',                VkKeyF4,             VkKeyF4         }},
+  {  0x00E1, 0x0032, 0x0113, 0x0064, {L'g',                L'G',                VkKeyF5,             VkKeyF5         }},
+  {  0x0113, 0x0032, 0x0145, 0x0064, {L'h',                L'H',                VkKeyF6,             VkKeyF6         }},
+  {  0x0145, 0x0032, 0x0177, 0x0064, {L'j',                L'J',                VkKeyF7,             VkKeyF7         }},
+  {  0x0177, 0x0032, 0x01A9, 0x0064, {L'k',                L'K',                VkKeyF8,             VkKeyF8         }},
+  {  0x01A9, 0x0032, 0x01DB, 0x0064, {L'l',                L'L',                VkKeyF9,             VkKeyF9         }},
+  {  0x01DB, 0x0032, 0x020D, 0x0064, {VkKeyF2,             VkKeyF2,             VkKeyF10,            VkKeyF10        }},
+  // Line 2
+  {  0x0000, 0x0064, 0x004B, 0x0096, {VkKeyCapslock,       VkKeyCapslock,       VkKeyShift,          VkKeyShift      }},
+  {  0x004B, 0x0064, 0x007D, 0x0096, {L'z',                L'Z',                L'`',                L'~'            }},
+  {  0x007D, 0x0064, 0x00AF, 0x0096, {L'x',                L'X',                L';',                L':'            }},
+  {  0x00AF, 0x0064, 0x00E1, 0x0096, {L'c',                L'C',                L'\'',               L'"'            }},
+  {  0x00E1, 0x0064, 0x0113, 0x0096, {L'v',                L'V',                L',',                L'<'            }},
+  {  0x0113, 0x0064, 0x0145, 0x0096, {L'b',                L'B',                L'.',                L'>'            }},
+  {  0x0145, 0x0064, 0x0177, 0x0096, {L'n',                L'N',                L'/',                L'?'            }},
+  {  0x0177, 0x0064, 0x01A9, 0x0096, {L'm',                L'M',                VkKeyF11,            VkKeyF11        }},
+  {  0x01A9, 0x0064, 0x01DB, 0x0096, {VkKeyUp,             VkKeyUp,             VkKeyF12,            VkKeyF12        }},
+  {  0x01DB, 0x0064, 0x0226, 0x0096, {VkKeyEnter,          VkKeyEnter,          VkKeyEnter,          VkKeyEnter      }},
+  // Line 3
+  {  0x0000, 0x0096, 0x004B, 0x00C8, {VkKeyEsc,            VkKeyEsc,            VkKeyEsc,            VkKeyEsc        }},
+  {  0x004B, 0x0096, 0x007D, 0x00C8, {VkKeyTwoPage,        VkKeyTwoPage,        VkKeyTwoPage,        VkKeyTwoPage    }},
+  {  0x007D, 0x0096, 0x0177, 0x00C8, {L' ',                L' ',                L' ',                L' '            }},
+  {  0x0177, 0x0096, 0x01A9, 0x00C8, {VkKeyLeft,           VkKeyLeft,           L'\\',               L'|'            }},
+  {  0x01A9, 0x0096, 0x01DB, 0x00C8, {VkKeyDown,           VkKeyDown,           L'-',                L'_'            }},
+  {  0x01DB, 0x0096, 0x020D, 0x00C8, {VkKeyRight,          VkKeyRight,          L'=',                L'+'            }},
+  // Screen Corner A
+  {  0x0000, 0x0000, 0x001E, 0x001E, {VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum}},
+  // Screen Corner B
+  {  0x0000, 0x023A, 0x001E, 0x0258, {VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum}},
+  // Screen Corner C
+  {  0x02E4, 0x0000, 0x0320, 0x001E, {VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum}},
+  // Screen Corner D
+  {  0x02E4, 0x023A, 0x0320, 0x0258, {VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum}}
+};
+
+//
+// 1.SimpleKeyboardBody
+// Follow below design
+//   (1).\KeyboardLayout\SimpleKeyboard.bmp
+// Based on keyboard's (startX, startY)
+// +-----+-----+
+// | Esc |Enter| Line 0
+// +-----+-----+
+// | Up  | Down| Line 1
+// +-----+-----+
+//
+// 2.Screen Corner
+// Follow below design
+//   (1).\KeyboardLayout\SimpleIcon.bmp # Screen Corner A/B
+//   (2).\KeyboardLayout\FullIcon.bmp   # Screen Corner C/D
+// +-+------------------------------------+-+
+// |A|                                    |C|
+// +-+                                    +-+
+// |                                        |
+// |                                        |
+// |                                        |
+// |                                        |
+// |                                        |
+// |                                        |
+// +-+                                    +-+
+// |B|                                    |D|
+// +-+------------------------------------+-+
+//
+VK_STRUCT mSimpleKeyboardBody[] = {
+  // StartX  StartY  EndX    EndY     Page0Font            Page1Font            Page2Font            Page3Font
+  // Line 0
+  {  0x0000, 0x0000, 0x0032, 0x0032, {VkKeyEsc,            VkKeyEsc,            VkKeyEsc,            VkKeyEsc        }},
+  {  0x0032, 0x0000, 0x0064, 0x0032, {VkKeyEnter,          VkKeyEnter,          VkKeyEnter,          VkKeyEnter      }},
+  // Line 1
+  {  0x0000, 0x0032, 0x0032, 0x0064, {VkKeyUp,             VkKeyUp,             VkKeyUp,             VkKeyUp         }},
+  {  0x0032, 0x0032, 0x0064, 0x0064, {VkKeyDown,           VkKeyDown,           VkKeyDown,           VkKeyDown       }},
+  // Screen Corner A
+  {  0x0000, 0x0000, 0x001E, 0x001E, {VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum}},
+  // Screen Corner B
+  {  0x0000, 0x023A, 0x001E, 0x0258, {VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum}},
+  // Screen Corner C
+  {  0x02E4, 0x0000, 0x0320, 0x001E, {VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum}},
+  // Screen Corner D
+  {  0x02E4, 0x023A, 0x0320, 0x0258, {VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum}}
+};
+
+/**
+  Modify the color of key if Shift or CapsLock is pressed.
+
+  @param[in]       VkContext   Address of an VK_CONTEXT structure.
+  @param[in, out]  BltBuffer   Address of a blt buffer.
+
+  @retval EFI_SUCCESS          Success for the function.
+
+**/
+EFI_STATUS
+ModifyShiftKeyColor (
+  IN     VK_CONTEXT                    *VkContext,
+  IN OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL **BltBuffer
+  )
+{
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *TempBltBuffer;
+  UINTN                         BltSize;
+  BOOLEAN                       IsPressed;
+
+  TempBltBuffer = *BltBuffer;
+  BltSize       = VkContext->VkBodyBltHeight * VkContext->VkBodyBltWidth;
+  IsPressed     = VkContext->PageNumber <= VkPage1 ?
+                  VkContext->IsCapsLockFlag :
+                  VkContext->IsShiftKeyFlag;
+
+  while (BltSize-- != 0) {
+    //
+    // Color gradient issue
+    //
+    if (((TempBltBuffer->Red - TempBltBuffer->Green) > 0x20) &&
+        ((TempBltBuffer->Red - TempBltBuffer->Blue)  > 0x20)) {
+      if (IsPressed) {
+        TempBltBuffer->Red   = 0;
+        TempBltBuffer->Green = 255;
+        TempBltBuffer->Blue  = 255;
+      } else {
+        TempBltBuffer->Red   = 255;
+        TempBltBuffer->Green = 255;
+        TempBltBuffer->Blue  = 255;
+      }
+    }
+    TempBltBuffer++;
+  }
+
+  return EFI_SUCCESS;
+}
+
+/**
+  Make the keyboard transparent.
+
+  @param[in]      VkContext      Address of an VK_CONTEXT structure.
+  @param[in]      IsTransparent  TRUE for set keyboard transparent.
+  @param[in]      BltIn          Address of keyboard blt buffer.
+  @param[in, out] BltOut         Address of output blt buffer.
+                                 NULL will allocate it.
+
+  @retval EFI_SUCCESS            Success for the function.
+  @retval EFI_OUT_OF_RESOURCES   Allocate memory failed.
+
+**/
+EFI_STATUS
+MakeKeyboardTransparent (
+  IN     VK_CONTEXT                    *VkContext,
+  IN     BOOLEAN                       IsTransparent,
+  IN     EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltIn,
+  IN OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL **BltOut
+  )
+{
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Compound;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Keyboard;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Background;
+  UINTN                         BltSize;
+
+  if (*BltOut == NULL) {
+    *BltOut = AllocateZeroPool (VkContext->VkBodyBltSize);
+    if (*BltOut == NULL) {
+      return EFI_OUT_OF_RESOURCES;
+    }
+  }
+  Compound   = *BltOut;
+  Keyboard   = BltIn;
+  Background = VkContext->VkBodyBackgroundBltBuffer;
+  BltSize    = VkContext->VkBodyBltHeight * VkContext->VkBodyBltWidth;
+  while (BltSize-- != 0) {
+    if (IsTransparent) {
+      Compound->Red   = (Keyboard->Red * TRANSPARENCY_WEIGHT) / 100 + (Background->Red * (100 - TRANSPARENCY_WEIGHT)) / 100;
+      Compound->Green = (Keyboard->Green * TRANSPARENCY_WEIGHT) / 100 + (Background->Green * (100 - TRANSPARENCY_WEIGHT)) / 100;
+      Compound->Blue  = (Keyboard->Blue * TRANSPARENCY_WEIGHT) / 100 + (Background->Blue * (100 - TRANSPARENCY_WEIGHT)) / 100;
+    } else {
+      *Compound = *Keyboard;
+    }
+    Compound++;
+    Keyboard++;
+    Background++;
+  }
+
+  return EFI_SUCCESS;
+}
+
+/**
+  Save the background blt buffer.
+
+  @param[in] VkContext           Address of an VK_CONTEXT structure.
+  @param[in] BltSize             Size of blt.
+
+  @retval EFI_SUCCESS            Success for the function.
+  @retval EFI_OUT_OF_RESOURCES   Allocate memory failed.
+
+**/
+EFI_STATUS
+EFIAPI
+SaveVkBodyBackgroundBltBuffer (
+  IN VK_CONTEXT *VkContext,
+  IN UINTN      BltSize
+  )
+{
+  EFI_STATUS                    Status;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *CurrentBltBuffer;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *CurrentBltBufferSave;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *OldBltBuffer;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *OldBltBufferSave;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Compound;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Background;
+  UINTN                         Size;
+
+  CurrentBltBufferSave = NULL;
+  OldBltBufferSave     = NULL;
+
+  //
+  // Save original blt buffer first.
+  //
+  OldBltBuffer = AllocateZeroPool (VkContext->VkBodyBltSize);
+  if (OldBltBuffer == NULL) {
+    return EFI_OUT_OF_RESOURCES;
+  }
+  if (VkContext->VkBodyBackgroundBltBuffer != NULL) {
+    CopyMem (OldBltBuffer, VkContext->VkBodyBackgroundBltBuffer, VkContext->VkBodyBltSize);
+  }
+
+  if (VkContext->VkBodyBackgroundBltBuffer == NULL) {
+    VkContext->VkBodyBltSize = BltSize;
+    VkContext->VkBodyBackgroundBltBuffer = AllocateZeroPool (VkContext->VkBodyBltSize);
+    ASSERT (VkContext->VkBodyBackgroundBltBuffer != NULL);
+    if (VkContext->VkBodyBackgroundBltBuffer == NULL) {
+      return EFI_OUT_OF_RESOURCES;
+    }
+  } else if (BltSize > VkContext->VkBodyBltSize) {
+    VkContext->VkBodyBltSize = BltSize;
+    FreePool (VkContext->VkBodyBackgroundBltBuffer);
+    VkContext->VkBodyBackgroundBltBuffer = NULL;
+    VkContext->VkBodyBackgroundBltBuffer = AllocateZeroPool (VkContext->VkBodyBltSize);
+    ASSERT (VkContext->VkBodyBackgroundBltBuffer != NULL);
+    if (VkContext->VkBodyBackgroundBltBuffer == NULL) {
+      return EFI_OUT_OF_RESOURCES;
+    }
+  } else {
+    ZeroMem (VkContext->VkBodyBackgroundBltBuffer, VkContext->VkBodyBltSize);
+  }
+
+  CurrentBltBuffer = NULL;
+  if (VkContext->IsBackgroundChanged == TRUE) {
+    //
+    // Background changed, merge current visioning blt buffer with old background blt buffer.
+    //
+    Compound   = VkContext->VkBodyCompoundBltBuffer;
+    Background = VkContext->VkBodyBackgroundBltBuffer;
+    CurrentBltBuffer = AllocateZeroPool (VkContext->VkBodyBltSize);
+    ASSERT (CurrentBltBuffer != NULL);
+    if (CurrentBltBuffer == NULL) {
+      return EFI_OUT_OF_RESOURCES;
+    }
+    Status = VkContext->GraphicsOutput->Blt (
+                                          VkContext->GraphicsOutput,
+                                          CurrentBltBuffer,
+                                          EfiBltVideoToBltBuffer,
+                                          VkContext->VkBodyBltStartX,
+                                          VkContext->VkBodyBltStartY,
+                                          0,
+                                          0,
+                                          VkContext->VkBodyBltWidth,
+                                          VkContext->VkBodyBltHeight,
+                                          VkContext->VkBodyBltWidth * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
+                                          );
+    CurrentBltBufferSave = CurrentBltBuffer;
+    OldBltBufferSave = OldBltBuffer;
+    Size = VkContext->VkBodyBltHeight * VkContext->VkBodyBltWidth;
+    while (Size-- != 0) {
+      if ((Compound->Red   != CurrentBltBuffer->Red) ||
+          (Compound->Green != CurrentBltBuffer->Green) ||
+          (Compound->Blue  != CurrentBltBuffer->Blue)) {
+        *Background = *CurrentBltBuffer;
+      } else {
+        *Background = *OldBltBuffer;
+      }
+      Compound++;
+      Background++;
+      CurrentBltBuffer++;
+      OldBltBuffer++;
+    }
+  } else {
+    //
+    // Background NOT changed, save it to VkBodyBackgroundBltBuffer directly.
+    //
+    Status = VkContext->GraphicsOutput->Blt (
+                                          VkContext->GraphicsOutput,
+                                          VkContext->VkBodyBackgroundBltBuffer,
+                                          EfiBltVideoToBltBuffer,
+                                          VkContext->VkBodyBltStartX,
+                                          VkContext->VkBodyBltStartY,
+                                          0,
+                                          0,
+                                          VkContext->VkBodyBltWidth,
+                                          VkContext->VkBodyBltHeight,
+                                          VkContext->VkBodyBltWidth * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
+                                          );
+  }
+
+  if (CurrentBltBufferSave != NULL) {
+    FreePool (CurrentBltBufferSave);
+  }
+  if (OldBltBufferSave != NULL) {
+    FreePool (OldBltBufferSave);
+  }
+
+  return Status;
+}
+
+/**
+  Restore the background blt buffer.
+
+  @param[in] VkContext           Address of an VK_CONTEXT structure.
+
+  @retval EFI_SUCCESS            Success for the function.
+  @retval EFI_UNSUPPORTED        Input blt buffer is NULL.
+  @retval Others                 An unexpected error occurred.
+
+**/
+EFI_STATUS
+EFIAPI
+RestoreVkBodyBackgroundBltBuffer (
+  IN VK_CONTEXT *VkContext
+  )
+{
+  EFI_STATUS Status;
+
+  if (VkContext->VkBodyBackgroundBltBuffer == NULL) {
+    return EFI_UNSUPPORTED;
+  }
+
+  Status = VkContext->GraphicsOutput->Blt (
+                                        VkContext->GraphicsOutput,
+                                        VkContext->VkBodyBackgroundBltBuffer,
+                                        EfiBltBufferToVideo,
+                                        0,
+                                        0,
+                                        VkContext->VkBodyBltStartX,
+                                        VkContext->VkBodyBltStartY,
+                                        VkContext->VkBodyBltWidth,
+                                        VkContext->VkBodyBltHeight,
+                                        VkContext->VkBodyBltWidth * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
+                                        );
+
+  FreePool (VkContext->VkBodyBackgroundBltBuffer);
+  VkContext->VkBodyBackgroundBltBuffer = NULL;
+
+  return Status;
+}
+
+/**
+  Set the position of character.
+
+  @param[in] VkContext      Address of an VK_CONTEXT structure.
+  @param[in] DestX          X position.
+  @param[in] DestY          Y position.
+
+  @retval EFI_SUCCESS       Success for the function.
+  @retval Others            An unexpected error occurred.
+
+**/
+EFI_STATUS
+SetCharacterPosition (
+  IN VK_CONTEXT *VkContext,
+  IN UINT32     DestX,
+  IN UINT32     DestY
+  )
+{
+  UINTN     Index;
+  VK_STRUCT *KeyArryPtr;
+  UINT32    KeyArrySize;
+
+  switch (VkContext->TargetKeyboardDisplay) {
+  case VkDisplayAttributeSimpleTop:
+  case VkDisplayAttributeSimpleBottom:
+    KeyArryPtr  = mSimpleKeyboardBody;
+    KeyArrySize = DIM (mSimpleKeyboardBody);
+    break;
+
+  case VkDisplayAttributeFullBottom:
+  case VkDisplayAttributeFullTop:
+    KeyArryPtr = mFullKeyboardBody;
+    KeyArrySize = DIM (mFullKeyboardBody);
+    break;
+
+  case VkDisplayAttributeNone:
+    KeyArryPtr = mFullKeyboardBody;
+    KeyArrySize = DIM (mFullKeyboardBody);
+    break;
+
+  default:
+    return EFI_UNSUPPORTED;
+  }
+
+  for (Index = 0; Index < KeyArrySize; Index++) {
+    VkContext->KeyboardBodyPtr[Index] = KeyArryPtr[Index];
+  }
+  VkContext->NumOfKeysInfo = KeyArrySize;
+
+  for (Index = 0; Index < (VkContext->NumOfKeysInfo - 4); Index++) {
+    VkContext->KeyboardBodyPtr[Index].DisStartX += (UINT16)DestX;
+    VkContext->KeyboardBodyPtr[Index].DisStartY += (UINT16)DestY;
+    VkContext->KeyboardBodyPtr[Index].DisEndX   += (UINT16)DestX;
+    VkContext->KeyboardBodyPtr[Index].DisEndY   += (UINT16)DestY;
+  }
+
+  return EFI_SUCCESS;
+}
+
+/**
+  Save the icon background blt buffer.
+
+  @param[in] VkContext      Address of an VK_CONTEXT structure.
+  @param[in] IconType       The icon type.
+
+  @retval EFI_SUCCESS            Success for the function.
+  @retval EFI_OUT_OF_RESOURCES   Allocate memory failed.
+  @retval Others                 An unexpected error occurred.
+
+**/
+EFI_STATUS
+EFIAPI
+SaveVkIconBackgroundBltBuffer (
+  IN VK_CONTEXT           *VkContext,
+  IN VK_DISPLAY_ATTRIBUTE IconType
+  )
+{
+  EFI_STATUS                    Status;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *GraphicBlt;
+  UINTN                         BltSize;
+  UINTN                         Height;
+  UINTN                         Width;
+  INTN                          StartX;
+  INTN                          StartY;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *TempIconBackBuffer;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *IconBackBuffer;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Compound;
+  UINTN                         Size;
+  BOOLEAN                       SaveCursor;
+
+  Status             = EFI_SUCCESS;
+  StartX             = 0;
+  StartY             = 0;
+  TempIconBackBuffer = NULL;
+  IconBackBuffer     = NULL;
+  Compound           = NULL;
+
+  if ((IconType == VkDisplayAttributeFullTop) ||
+      (IconType == VkDisplayAttributeSimpleTop)) {
+    return EFI_SUCCESS;
+  }
+
+  SaveCursor = gST->ConOut->Mode->CursorVisible;
+  gST->ConOut->EnableCursor (gST->ConOut, FALSE);
+
+  if (IconType == VkDisplayAttributeFullBottom) {
+    GraphicBlt = VkContext->FullIcon->Bitmap;
+    BltSize    = VkContext->FullIcon->Height * VkContext->FullIcon->Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL);
+    Height     = VkContext->FullIcon->Height;
+    Width      = VkContext->FullIcon->Width;
+    StartX     = VkContext->FullIconBackStartX;
+    StartY     = VkContext->FullIconBackStartY;
+  } else if (IconType == VkDisplayAttributeSimpleBottom) {
+    GraphicBlt = VkContext->SmallIcon->Bitmap;
+    BltSize    = VkContext->SmallIcon->Height * VkContext->SmallIcon->Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL);
+    Height     = VkContext->SmallIcon->Height;
+    Width      = VkContext->SmallIcon->Width;
+    StartX     = VkContext->SimIconBackStartX;
+    StartY     = VkContext->SimIconBackStartY;
+  } else {
+    gST->ConOut->EnableCursor (gST->ConOut, SaveCursor);
+    return EFI_UNSUPPORTED;
+  }
+
+  IconBackBuffer = AllocateZeroPool (BltSize);
+  if (IconBackBuffer == NULL) {
+    gST->ConOut->EnableCursor (gST->ConOut, SaveCursor);
+    return EFI_OUT_OF_RESOURCES;
+  }
+  TempIconBackBuffer = IconBackBuffer;
+  Status = VkContext->GraphicsOutput->Blt (
+                                        VkContext->GraphicsOutput,
+                                        IconBackBuffer,
+                                        EfiBltVideoToBltBuffer,
+                                        StartX,
+                                        StartY,
+                                        0,
+                                        0,
+                                        Width,
+                                        Height,
+                                        Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
+                                        );
+
+  if (IconType == VkDisplayAttributeFullBottom) {
+    //
+    // Store full icon background framebuffer
+    //
+    VkContext->FullIconBackHeight = Height;
+    VkContext->FullIconBackWidth  = Width;
+    if (VkContext->FullIconUpdatedFlag == FALSE) {
+      //
+      // No icon draw, save the buffer directly.
+      //
+      if (VkContext->FullIconBackBuffer == NULL) {
+        VkContext->FullIconBackBuffer = AllocateZeroPool (BltSize);
+        VkContext->FullIconBackSize = BltSize;
+      }
+      CopyMem (VkContext->FullIconBackBuffer, IconBackBuffer, BltSize);
+      VkContext->FullIconUpdatedFlag = TRUE;
+    } else {
+      if (CompareMem (VkContext->FullIconBackBuffer, IconBackBuffer, BltSize) != 0) {
+        Compound = VkContext->FullIconBackBuffer;
+        Size = Height * Width;
+        while (Size-- != 0) {
+          if ((GraphicBlt->Red   != IconBackBuffer->Red) ||
+              (GraphicBlt->Green != IconBackBuffer->Green) ||
+              (GraphicBlt->Blue  != IconBackBuffer->Blue)) {
+            *Compound = *IconBackBuffer;
+          }
+          Compound++;
+          GraphicBlt++;
+          IconBackBuffer++;
+        }
+      }
+    }
+  } else if (IconType == VkDisplayAttributeSimpleBottom) {
+    //
+    // Store simple icon background framebuffer
+    //
+    VkContext->SimIconBackHeight = Height;
+    VkContext->SimIconBackWidth  = Width;
+    if (VkContext->SimIconUpdatedFlag == FALSE) {
+      //
+      // No icon draw, save the buffer directly.
+      //
+      if (VkContext->SimIconBackBuffer == NULL) {
+        VkContext->SimIconBackBuffer = AllocateZeroPool (BltSize);
+        VkContext->SimIconBackSize = BltSize;
+      }
+      CopyMem (VkContext->SimIconBackBuffer, IconBackBuffer, BltSize);
+      VkContext->SimIconUpdatedFlag = TRUE;
+    } else {
+      if (CompareMem (VkContext->SimIconBackBuffer, IconBackBuffer, BltSize) != 0) {
+        Compound = VkContext->SimIconBackBuffer;
+        Size = Height * Width;
+        while (Size-- != 0) {
+          if ((GraphicBlt->Red   != IconBackBuffer->Red) ||
+              (GraphicBlt->Green != IconBackBuffer->Green) ||
+              (GraphicBlt->Blue  != IconBackBuffer->Blue)) {
+            *Compound = *IconBackBuffer;
+          }
+          Compound++;
+          GraphicBlt++;
+          IconBackBuffer++;
+        }
+      }
+    }
+  }
+
+  if (TempIconBackBuffer != NULL)  FreePool (TempIconBackBuffer);
+
+  gST->ConOut->EnableCursor (gST->ConOut, SaveCursor);
+  return Status;
+}
+
+/**
+  Use to draw the keyboard icon.
+
+  @param[in] VkContext  Pointer to virtual keyboard's context
+  @param[in] VkImage    Image of keyboard to display on the screen.
+  @param[in] Attribute  Attribute of keyboard to display on the screen.
+
+  @retval EFI_SUCCESS           ConsoleControl has been flipped to graphics and keyboard icon displayed.
+  @retval EFI_UNSUPPORTED       KeyboardFile not found
+  @retval EFI_INVALID_PARAMETER Attribute is unknown.
+
+**/
+EFI_STATUS
+EFIAPI
+DrawVkIcon (
+  IN VK_CONTEXT                    *VkContext,
+  IN EFI_IMAGE_INPUT               *VkImage,
+  IN VK_DISPLAY_ATTRIBUTE          Attribute
+  )
+{
+  EFI_STATUS                    Status;
+  UINT32                        SizeOfX;
+  UINT32                        SizeOfY;
+  INTN                          DestX;
+  INTN                          DestY;
+  UINTN                         CoordinateX;
+  UINTN                         CoordinateY;
+  EFI_GRAPHICS_OUTPUT_PROTOCOL  *GraphicsOutput;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Blt;
+  UINTN                         BltSize;
+  UINTN                         Height;
+  UINTN                         Width;
+
+  Status         = EFI_SUCCESS;
+  GraphicsOutput = VkContext->GraphicsOutput;
+  SizeOfX        = GraphicsOutput->Mode->Info->HorizontalResolution;
+  SizeOfY        = GraphicsOutput->Mode->Info->VerticalResolution;
+  CoordinateX    = 0;
+  CoordinateY    = 0;
+  Height         = VkImage->Height;
+  Width          = VkImage->Width;
+  Blt            = VkImage->Bitmap;
+  BltSize        = sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL) * (UINT32)(Width * Height);
+
+  //
+  // Calculate the display position according to Attribute.
+  //
+  switch (Attribute) {
+  case VkDisplayAttributeSimpleTop:
+    DestX = CoordinateX;
+    DestY = CoordinateY;
+    break;
+
+  case VkDisplayAttributeFullTop:
+    DestX = (SizeOfX - Width - CoordinateX);
+    DestY = CoordinateY;;
+    break;
+
+  case VkDisplayAttributeFullBottom:
+    DestX                         = (SizeOfX - Width - CoordinateX);
+    DestY                         = (SizeOfY - Height - CoordinateY);
+    VkContext->FullIconBackStartX = DestX;
+    VkContext->FullIconBackStartY = DestY;
+    break;
+
+  case VkDisplayAttributeSimpleBottom:
+    DestX = CoordinateX;
+    DestY = (SizeOfY - Height - CoordinateY);
+
+    //
+    // Save to check icon/screen cleared
+    //
+    if (VkContext->IconBltBuffer == NULL) {
+      VkContext->IconBltSize   = BltSize;
+      VkContext->IconBltWidth  = Width;
+      VkContext->IconBltHeight = Height;
+      VkContext->IconBltBuffer = AllocateZeroPool (BltSize);
+    }
+    CopyMem (VkContext->IconBltBuffer, Blt, VkContext->IconBltSize);
+
+    VkContext->SimIconBackStartX = DestX;
+    VkContext->SimIconBackStartY = DestY;
+    break;
+
+  case VkDisplayAttributeNone:
+    return EFI_SUCCESS;
+
+  default:
+    return EFI_INVALID_PARAMETER;
+  }
+
+  if ((DestX >= 0) && (DestY >= 0)) {
+    //
+    // Store icon background framebuffer
+    //
+    SaveVkIconBackgroundBltBuffer (VkContext, Attribute);
+    Status = GraphicsOutput->Blt (
+                               GraphicsOutput,
+                               Blt,
+                               EfiBltBufferToVideo,
+                               0,
+                               0,
+                               (UINTN) DestX,
+                               (UINTN) DestY,
+                               Width,
+                               Height,
+                               Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
+                               );
+  }
+
+  return Status;
+}
+
+/**
+  Use to draw the keyboard.
+
+  @param[in] VkContext  Pointer to virtual keyboard's context
+  @param[in] VkImage    Image of keyboard to display on the screen.
+  @param[in] Attribute  Attribute of keyboard to display on the screen.
+
+  @retval EFI_SUCCESS           ConsoleControl has been flipped to graphics and keyboard displayed.
+  @retval EFI_UNSUPPORTED       KeyboardFile not found
+  @retval EFI_INVALID_PARAMETER Attribute is unknown.
+
+**/
+EFI_STATUS
+EFIAPI
+DrawVkBody (
+  IN VK_CONTEXT                    *VkContext,
+  IN EFI_IMAGE_INPUT               *VkImage,
+  IN VK_DISPLAY_ATTRIBUTE          Attribute
+  )
+{
+  EFI_STATUS                    Status;
+  UINT32                        SizeOfX;
+  UINT32                        SizeOfY;
+  INTN                          DestX;
+  INTN                          DestY;
+  UINTN                         BltSize;
+  UINTN                         Height;
+  UINTN                         Width;
+  UINTN                         CoordinateY;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltIn;
+  EFI_GRAPHICS_OUTPUT_PROTOCOL  *GraphicsOutput;
+
+  Status         = EFI_SUCCESS;
+  GraphicsOutput = VkContext->GraphicsOutput;
+  SizeOfX        = GraphicsOutput->Mode->Info->HorizontalResolution;
+  SizeOfY        = GraphicsOutput->Mode->Info->VerticalResolution;
+  CoordinateY    = 0;
+  Height         = VkImage->Height;
+  Width          = VkImage->Width;
+  BltSize        = sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL) * (UINT32)(Width * Height);
+  BltIn          = AllocateCopyPool (BltSize, VkImage->Bitmap);
+
+  if (BltIn == NULL) {
+    return EFI_OUT_OF_RESOURCES;
+  }
+
+  //
+  // Calculate the display position according to Attribute.
+  //
+  switch (Attribute) {
+  case VkDisplayAttributeSimpleTop:
+    DestX = ((SizeOfX / 2) - Width) / 4;
+    DestY = CoordinateY;
+    VkContext->CurrentKeyboardDisplay = VkDisplayAttributeSimpleTop;
+    break;
+
+  case VkDisplayAttributeSimpleBottom:
+    DestX = ((SizeOfX / 2) - Width) / 4;
+    DestY = (SizeOfY - Height - CoordinateY);
+    VkContext->CurrentKeyboardDisplay = VkDisplayAttributeSimpleBottom;
+    break;
+
+  case VkDisplayAttributeFullTop:
+    DestX = (SizeOfX - Width) / 2;
+    DestY = CoordinateY;
+    VkContext->CurrentKeyboardDisplay = VkDisplayAttributeFullTop;
+    break;
+
+  case VkDisplayAttributeFullBottom:
+    DestX = (SizeOfX - Width) / 2;
+    DestY = (SizeOfY - Height - CoordinateY);
+    VkContext->CurrentKeyboardDisplay = VkDisplayAttributeFullBottom;
+    break;
+
+  case VkDisplayAttributeNone:
+    VkContext->CurrentKeyboardDisplay = VkDisplayAttributeNone;
+    goto DVKBODY_Exit;
+
+  default:
+    VkContext->CurrentKeyboardDisplay = VkDisplayAttributeNone;
+    Status = EFI_INVALID_PARAMETER;
+    goto DVKBODY_Exit;
+  }
+  if ((DestX >= 0) && (DestY >= 0)) {
+    SetCharacterPosition (VkContext, (UINT32)DestX, (UINT32)DestY);
+
+    //
+    // Store current framebuffer
+    //
+    VkContext->VkBodyBltStartX = DestX;
+    VkContext->VkBodyBltStartY = DestY;
+    VkContext->VkBodyBltHeight = Height;
+    VkContext->VkBodyBltWidth  = Width;
+    SaveVkBodyBackgroundBltBuffer (VkContext, BltSize);
+
+    //
+    // Free compound buffer first.
+    //
+    if (VkContext->VkBodyCompoundBltBuffer != NULL) {
+      FreePool (VkContext->VkBodyCompoundBltBuffer);
+    }
+    VkContext->VkBodyCompoundBltBuffer = NULL;
+    ModifyShiftKeyColor (VkContext, &BltIn);
+    MakeKeyboardTransparent (VkContext, TRUE, BltIn, &(VkContext->VkBodyCompoundBltBuffer));
+
+    //
+    // Draw keyboard body
+    //
+    Status = GraphicsOutput->Blt (
+                               GraphicsOutput,
+                               VkContext->VkBodyCompoundBltBuffer,
+                               EfiBltBufferToVideo,
+                               0,
+                               0,
+                               (UINTN) DestX,
+                               (UINTN) DestY,
+                               Width,
+                               Height,
+                               Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
+                               );
+  }
+
+
+DVKBODY_Exit:
+  if (BltIn != NULL) {
+    FreePool (BltIn);
+  }
+
+  return Status;
+}
+
+/**
+  Clear the keyboard body
+
+  @param  VkContext             Code context.
+
+  @retval EFI_SUCCESS           Clear rectangle is done.
+
+**/
+EFI_STATUS
+HideVkBody (
+  IN VK_CONTEXT *VkContext
+  )
+{
+  RestoreVkBodyBackgroundBltBuffer (VkContext);
+  VkContext->CurrentKeyboardDisplay = VkDisplayAttributeNone;
+
+  return EFI_SUCCESS;
+}
+
+
+/**
+  Clear the keyboard icon
+
+  @param  VkContext             Code context.
+
+  @retval EFI_SUCCESS           Clear rectangle is done.
+
+**/
+EFI_STATUS
+HideVkIcon (
+  IN VK_CONTEXT *VkContext
+  )
+{
+  EFI_STATUS                    Status;
+
+  if ((VkContext->FullIconBackBuffer == NULL) || (VkContext->SimIconBackBuffer == NULL)) {
+    return EFI_UNSUPPORTED;
+  }
+
+  if ((VkContext->FullIconUpdatedFlag == FALSE) || (VkContext->SimIconUpdatedFlag == FALSE)) {
+    return EFI_UNSUPPORTED;
+  }
+  Status = VkContext->GraphicsOutput->Blt (
+                                        VkContext->GraphicsOutput,
+                                        VkContext->FullIconBackBuffer,
+                                        EfiBltBufferToVideo,
+                                        0,
+                                        0,
+                                        VkContext->FullIconBackStartX,
+                                        VkContext->FullIconBackStartY,
+                                        VkContext->FullIconBackWidth,
+                                        VkContext->FullIconBackHeight,
+                                        VkContext->FullIconBackWidth * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
+                                        );
+
+  ZeroMem (VkContext->FullIconBackBuffer, VkContext->FullIconBackSize);
+  VkContext->FullIconUpdatedFlag = FALSE;
+
+
+  Status = VkContext->GraphicsOutput->Blt (
+                                        VkContext->GraphicsOutput,
+                                        VkContext->SimIconBackBuffer,
+                                        EfiBltBufferToVideo,
+                                        0,
+                                        0,
+                                        VkContext->SimIconBackStartX,
+                                        VkContext->SimIconBackStartY,
+                                        VkContext->SimIconBackWidth,
+                                        VkContext->SimIconBackHeight,
+                                        VkContext->SimIconBackWidth * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
+                                        );
+  if (!EFI_ERROR (Status)) {
+    if (VkContext->ScreenCheckBuffer == NULL) {
+      VkContext->ScreenCheckBufferSize = VkContext->SimIconBackHeight *
+                                         VkContext->SimIconBackWidth *
+                                         sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL);
+      VkContext->ScreenCheckBuffer = AllocateZeroPool (VkContext->ScreenCheckBufferSize);
+    }
+
+    CopyMem (
+      VkContext->ScreenCheckBuffer,
+      VkContext->SimIconBackBuffer,
+      (VkContext->SimIconBackHeight * VkContext->SimIconBackWidth * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL))
+      );
+  }
+  ZeroMem (VkContext->SimIconBackBuffer, VkContext->SimIconBackSize);
+  VkContext->SimIconUpdatedFlag = FALSE;
+
+  return EFI_SUCCESS;
+}
+
+/**
+  Draw key board on the display
+
+  @param[in] VkContext          Graphic Protocol for draw the alphabet.
+
+  @retval EFI_SUCCESS           Draw keyboard was done.
+  @retval EFI_UNSUPPORTED       Did not get key mapping table.
+
+**/
+EFI_STATUS
+DrawKeyboardLayout (
+  IN VK_CONTEXT *VkContext
+  )
+{
+  EFI_STATUS Status;
+  if (!VkContext->IsIconShowed) {
+    Status = DrawVkIcon (VkContext, VkContext->SmallIcon, VkDisplayAttributeSimpleTop);
+    ASSERT_EFI_ERROR (Status);
+
+    Status = DrawVkIcon (VkContext, VkContext->SmallIcon, VkDisplayAttributeSimpleBottom);
+    ASSERT_EFI_ERROR (Status);
+
+    Status = DrawVkIcon (VkContext, VkContext->FullIcon,  VkDisplayAttributeFullTop);
+    ASSERT_EFI_ERROR (Status);
+
+    Status = DrawVkIcon (VkContext, VkContext->FullIcon,  VkDisplayAttributeFullBottom);
+    ASSERT_EFI_ERROR (Status);
+    VkContext->IsIconShowed = TRUE;
+  }
+
+  if (VkContext->TargetKeyboardDisplay != VkContext->CurrentKeyboardDisplay) {
+    switch (VkContext->TargetKeyboardDisplay) {
+    case VkDisplayAttributeSimpleTop:
+    case VkDisplayAttributeSimpleBottom:
+      DrawVkBody (VkContext, VkContext->SimKeyBody, VkContext->TargetKeyboardDisplay);
+      break;
+
+    case VkDisplayAttributeFullTop:
+    case VkDisplayAttributeFullBottom:
+      if (VkContext->PageNumber <= VkPage1) {
+        DrawVkBody (VkContext, VkContext->CapLeKeyBody, VkContext->TargetKeyboardDisplay);
+      } else {
+        DrawVkBody (VkContext, VkContext->DigKeyBody, VkContext->TargetKeyboardDisplay);
+      }
+
+    case VkDisplayAttributeNone:
+      break;
+
+    default:
+      break;
+    }
+  }
+
+  return EFI_SUCCESS;
+}
+
+/**
+  Set the keyboard layout.
+
+  @param[in] VkContext          Graphic Protocol for draw the alphabet.
+  @param[in] Index              The layout selected.
+
+  @retval EFI_SUCCESS           Draw keyboard was done.
+  @retval Others                An unexpected error occurred.
+
+**/
+EFI_STATUS
+KeyboardLayoutHandler (
+  IN VK_CONTEXT *VkContext,
+  IN UINT32     Index
+  )
+{
+  EFI_STATUS Status;
+
+  Status = EFI_SUCCESS;
+
+  if (Index == (VkContext->NumOfKeysInfo - 4)) {
+    //
+    // Touch the LeftTop icon
+    //
+    if (VkContext->CurrentKeyboardDisplay == VkDisplayAttributeSimpleTop) {
+      VkContext->TargetKeyboardDisplay = VkDisplayAttributeNone;
+    } else {
+      VkContext->TargetKeyboardDisplay = VkDisplayAttributeSimpleTop;
+    }
+  } else if (Index == (VkContext->NumOfKeysInfo - 3)) {
+    //
+    // Touch the LeftBottom icon
+    //
+    if (VkContext->CurrentKeyboardDisplay == VkDisplayAttributeSimpleBottom) {
+      VkContext->TargetKeyboardDisplay = VkDisplayAttributeNone;
+    } else {
+      VkContext->TargetKeyboardDisplay = VkDisplayAttributeSimpleBottom;
+    }
+  } else if (Index == (VkContext->NumOfKeysInfo - 2)) {
+    //
+    // Touch the RightTop icon
+    //
+    if (VkContext->CurrentKeyboardDisplay == VkDisplayAttributeFullTop) {
+      VkContext->TargetKeyboardDisplay = VkDisplayAttributeNone;
+    } else {
+      VkContext->TargetKeyboardDisplay = VkDisplayAttributeFullTop;
+    }
+  } else {
+    //
+    // Touch the RightBottom icon
+    //
+    if (VkContext->CurrentKeyboardDisplay == VkDisplayAttributeFullBottom) {
+      VkContext->TargetKeyboardDisplay = VkDisplayAttributeNone;
+    } else {
+      VkContext->TargetKeyboardDisplay = VkDisplayAttributeFullBottom;
+    }
+  }
+
+  if (VkContext->TargetKeyboardDisplay == VkDisplayAttributeNone) {
+    //
+    // Just hide the current keyboard
+    //
+    HideVkBody (VkContext);
+    VkContext->KeyTouchedTimeOut = VK_REPEAT_TIMEOUT;
+
+  } else {
+    //
+    // If current keyboard status is NOT none,
+    // hide current keyboard first and then draw the target keyboard
+    //
+    if (VkContext->CurrentKeyboardDisplay != VkDisplayAttributeNone) {
+      HideVkBody (VkContext);
+    }
+    Status = DrawKeyboardLayout (VkContext);
+  }
+
+  return Status;
+}
+
+/**
+  This routine is used to check if icon has been cleared.
+
+  @param[in] VkContext  Pointer to virtual keyboard's context
+
+  @retval EFI_SUCCESS   Function completed.
+
+**/
+EFI_STATUS
+CheckIconCleared (
+  IN VK_CONTEXT *VkContext
+  )
+{
+  EFI_STATUS                    Status;
+  UINT32                        VerticalResolution;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer;
+
+  Status = EFI_SUCCESS;
+  BltBuffer = NULL;
+  VkContext->IconReDrawCheck++;
+  if (VkContext->IconReDrawCheck <= 10) {
+    //
+    // Check it every 10 * 100ms.
+    //
+    return Status;
+  }
+
+  //
+  // Check if right-bottomed region is black, if yes, clean screen happened, need to re-draw keyboard.
+  //
+  VerticalResolution    = VkContext->GraphicsOutput->Mode->Info->VerticalResolution;
+  BltBuffer             = AllocateZeroPool (VkContext->IconBltSize);
+  if (BltBuffer == NULL) {
+    return EFI_OUT_OF_RESOURCES;
+  }
+  Status = VkContext->GraphicsOutput->Blt (
+                                        VkContext->GraphicsOutput,
+                                        BltBuffer,
+                                        EfiBltVideoToBltBuffer,
+                                        0,
+                                        (VerticalResolution - VkContext->IconBltHeight),
+                                        0,
+                                        0,
+                                        VkContext->IconBltWidth,
+                                        VkContext->IconBltHeight,
+                                        VkContext->IconBltWidth * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
+                                        );
+  if (EFI_ERROR (Status)) {
+    FreePool (BltBuffer);
+    return Status;
+  }
+  VkContext->IsIconShowed = TRUE;
+  if (VkContext->IconBltBuffer == NULL) {
+    //
+    // No icon has been drawn.
+    //
+    VkContext->IsIconShowed = FALSE;
+  } else {
+    if (CompareMem (BltBuffer, VkContext->IconBltBuffer, VkContext->IconBltSize) != 0) {
+      //
+      // Icon has been overridden, need to re-draw.
+      //
+      VkContext->IsIconShowed = FALSE;
+    }
+  }
+
+  if (VkContext->IsIconShowed == FALSE) {
+    if (VkContext->ScreenCheckBuffer != NULL) {
+      if (CompareMem (BltBuffer, VkContext->ScreenCheckBuffer, VkContext->IconBltSize) == 0) {
+        //
+        // Icon has been overridden, force to re-draw the keyboard.
+        //
+        Status = DrawKeyboardLayout (VkContext);
+      } else {
+        //
+        // Save blt buffer of icon position and use it to check if icon is overridden.
+        //
+        CopyMem (VkContext->ScreenCheckBuffer, BltBuffer, VkContext->IconBltSize);
+      }
+    } else {
+      //
+      // Draw the keyboard.
+      //
+      Status = DrawKeyboardLayout (VkContext);
+    }
+  }
+
+  if (BltBuffer != NULL) {
+    FreePool (BltBuffer);
+  }
+
+  VkContext->IconReDrawCheck = 0;
+
+  return Status;
+}
+
+/**
+  ConvertCoordinate - Convert the touch panel's coordinate to display's coordinate.
+
+  @param[in]  VkContext             Virtual Keyboard context.
+  @param[in]  Point                 The coordinate reported from touch panel.
+  @param[out] TouchX                The coordinate X converted to display panel.
+  @param[out] TouchY                The coordinate Y converted to display panel..
+
+  @retval EFI_SUCCESS               Convert success.
+
+**/
+EFI_STATUS
+ConvertCoordinate (
+  IN  VK_CONTEXT                 *VkContext,
+  IN  EFI_ABSOLUTE_POINTER_STATE Point,
+  OUT UINT32                     *TouchX,
+  OUT UINT32                     *TouchY
+  )
+{
+  UINT64 AbsoluteMaxX;
+  UINT64 AbsoluteMaxY;
+  UINT32 HorizontalResolution;
+  UINT32 VerticalResolution;
+
+  AbsoluteMaxX         = VkContext->AbsolutePointer->Mode->AbsoluteMaxX;
+  AbsoluteMaxY         = VkContext->AbsolutePointer->Mode->AbsoluteMaxY;
+  HorizontalResolution = VkContext->GraphicsOutput->Mode->Info->HorizontalResolution;
+  VerticalResolution   = VkContext->GraphicsOutput->Mode->Info->VerticalResolution;
+  *TouchX              = (UINT32) MultU64x32 (Point.CurrentX, HorizontalResolution) / (UINT32) AbsoluteMaxX;
+  *TouchY              = (UINT32) MultU64x32 (Point.CurrentY, VerticalResolution) / (UINT32) AbsoluteMaxY;
+
+  return EFI_SUCCESS;
+}
+
+/**
+  This routine is used to check if screen has been cleared.
+
+  @param[in] VkContext  Pointer to virtual keyboard's context
+
+  @retval EFI_SUCCESS   Function completed.
+
+**/
+EFI_STATUS
+CheckScreenCleared (
+  IN VK_CONTEXT *VkContext
+  )
+{
+  EFI_STATUS                    Status;
+  UINT32                        HorizontalResolution;
+  UINT32                        VerticalResolution;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBufferIndex;
+  UINTN                         BltSize;
+  BOOLEAN                       IsScreenCleared;
+
+  //
+  // Check left-bottom side.
+  // If IconBltBuffer is null, checking is meaningless.
+  //
+  if (VkContext->IconBltBuffer == NULL) {
+    return EFI_SUCCESS;
+  }
+
+  IsScreenCleared = FALSE;
+  Status          = EFI_SUCCESS;
+  if ((gST->ConOut->Mode->CursorColumn == 0) && (gST->ConOut->Mode->CursorRow == 0)) {
+    //
+    // System may call gST->ConOut->ClearScreen
+    //
+    HorizontalResolution  = VkContext->GraphicsOutput->Mode->Info->HorizontalResolution;
+    VerticalResolution    = VkContext->GraphicsOutput->Mode->Info->VerticalResolution;
+    BltBuffer             = AllocateZeroPool (VkContext->IconBltSize);
+    if (BltBuffer == NULL) {
+      return EFI_OUT_OF_RESOURCES;
+    }
+
+    BltBufferIndex = BltBuffer;
+    Status = VkContext->GraphicsOutput->Blt (
+                                          VkContext->GraphicsOutput,
+                                          BltBuffer,
+                                          EfiBltVideoToBltBuffer,
+                                          (HorizontalResolution - VkContext->IconBltWidth),
+                                          (VerticalResolution - VkContext->IconBltHeight),
+                                          0,
+                                          0,
+                                          VkContext->IconBltWidth,
+                                          VkContext->IconBltHeight,
+                                          VkContext->IconBltWidth * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
+                                          );
+    if (EFI_ERROR (Status)) {
+      FreePool (BltBuffer);
+      return Status;
+    }
+    BltSize = VkContext->IconBltHeight * VkContext->IconBltWidth;
+    IsScreenCleared = TRUE;
+    while (BltSize-- != 0) {
+      if ((BltBufferIndex->Red != 0) || (BltBufferIndex->Green != 0) || (BltBufferIndex->Blue != 0)) {
+        IsScreenCleared = FALSE;
+        break;
+      }
+      BltBufferIndex++;
+    }
+    FreePool (BltBuffer);
+  }
+
+  if (IsScreenCleared) {
+    VkContext->IsIconShowed   = FALSE;
+    VkContext->CurrentKeyboardDisplay = VkDisplayAttributeNone;
+
+    if (VkContext->VkBodyBackgroundBltBuffer != NULL) {
+      FreePool (VkContext->VkBodyBackgroundBltBuffer);
+      VkContext->VkBodyBackgroundBltBuffer = NULL;
+    }
+
+    if (VkContext->VkBodyCompoundBltBuffer != NULL) {
+      FreePool (VkContext->VkBodyCompoundBltBuffer);
+      VkContext->VkBodyCompoundBltBuffer = NULL;
+    }
+
+    if (VkContext->IconBltBuffer != NULL) {
+      FreePool (VkContext->IconBltBuffer);
+      VkContext->IconBltBuffer = NULL;
+    }
+
+  }
+
+  return Status;
+}
+
+/**
+  This routine is used to check if background beneath virtual keyboard has been cleared.
+
+  @param[in] VkContext  Pointer to virtual keyboard's context
+
+  @retval EFI_SUCCESS   Function completed.
+
+**/
+EFI_STATUS
+CheckBackgroundChanged (
+  IN VK_CONTEXT *VkContext
+  )
+{
+  EFI_STATUS                    Status;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer;
+
+  Status                         = EFI_SUCCESS;
+  VkContext->IsBackgroundChanged = FALSE;
+
+  if ((VkContext->CurrentKeyboardDisplay == VkDisplayAttributeNone) || (VkContext->VkBodyCompoundBltBuffer == NULL)) {
+    return EFI_SUCCESS;
+  }
+
+  BltBuffer = AllocateZeroPool (VkContext->VkBodyBltSize);
+  if (BltBuffer == NULL) {
+    return EFI_OUT_OF_RESOURCES;
+  }
+  Status = VkContext->GraphicsOutput->Blt (
+                                        VkContext->GraphicsOutput,
+                                        BltBuffer,
+                                        EfiBltVideoToBltBuffer,
+                                        VkContext->VkBodyBltStartX,
+                                        VkContext->VkBodyBltStartY,
+                                        0,
+                                        0,
+                                        VkContext->VkBodyBltWidth,
+                                        VkContext->VkBodyBltHeight,
+                                        VkContext->VkBodyBltWidth * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
+                                        );
+  if (EFI_ERROR (Status)) {
+    FreePool (BltBuffer);
+    return Status;
+  }
+  if (CompareMem (BltBuffer, VkContext->VkBodyCompoundBltBuffer, VkContext->VkBodyBltSize) != 0) {
+    VkContext->IsBackgroundChanged = TRUE;
+    VkContext->CurrentKeyboardDisplay = VkDisplayAttributeNone;
+    DrawKeyboardLayout (VkContext);
+  }
+
+  if (BltBuffer != NULL) {
+    FreePool (BltBuffer);
+  }
+
+  return Status;
+}
+
+/**
+  Get unicode by VkContext->PageNumber and VkContext->KeyboardBodyPtr.
+
+  @param[in]  VkContext            Address of an VK_CONTEXT structure.
+  @param[in]  KeyItem              Key Item.
+  @param[out] FontPtr              Follow VkContext->PageNumber to translate
+                                   font unicode.
+
+  @retval EFI_SUCCESS              Finish translating FontPtr.
+  @retval EFI_INVALID_PARAMETER    VkContext or FontPtr is NULL.
+
+**/
+EFI_STATUS
+VkGetMappingFont (
+  IN  VK_CONTEXT *VkContext,
+  IN  VK_STRUCT  KeyItem,
+  OUT UINT32     *FontPtr
+  )
+{
+  if ((VkContext == NULL) || (FontPtr == NULL) || (VkContext->PageNumber>=VkPageMaximum)) {
+    return EFI_INVALID_PARAMETER;
+  }
+  *FontPtr = (UINT32) KeyItem.PageFont[VkContext->PageNumber];
+
+  return EFI_SUCCESS;
+}
diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/KeyboardLayout.idf b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/KeyboardLayout.idf
new file mode 100644
index 0000000000..995bd0d859
--- /dev/null
+++ b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/KeyboardLayout.idf
@@ -0,0 +1,12 @@
+// /** @file
+// Virtual Keyboard Layout
+//
+// Copyright (c) 2019 - 2020, Intel Corporation. All rights reserved.<BR>
+//
+// SPDX-License-Identifier: BSD-2-Clause-Patent
+//
+#image IMG_VK_CAPITALLETTERKEYBOARD TRANSPARENT CapitalLetterKeyboard.bmp
+#image IMG_VK_DIGITKEYBOARD         TRANSPARENT DigitKeyboard.bmp
+#image IMG_VK_FULLICON              TRANSPARENT FullIcon.bmp
+#image IMG_VK_SIMPLEICON            TRANSPARENT SimpleIcon.bmp
+#image IMG_VK_SIMPLEKEYBOARD        TRANSPARENT SimpleKeyboard.bmp
diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/SimpleIcon.bmp b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/SimpleIcon.bmp
new file mode 100644
index 0000000000000000000000000000000000000000..16816f031eb98bf8169c7119b95ea3ed1371f41d
GIT binary patch
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diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/SimpleKeyboard.bmp b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/SimpleKeyboard.bmp
new file mode 100644
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GIT binary patch
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diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyboard.h b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyboard.h
new file mode 100644
index 0000000000..14a50fa5af
--- /dev/null
+++ b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyboard.h
@@ -0,0 +1,829 @@
+/** @file
+  Header file for Virtual Keyboard driver.
+
+  Copyright (c) 2012 - 2020, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef _VIRTUAL_KEYBOARD_H_
+#define _VIRTUAL_KEYBOARD_H_
+
+#include <Uefi.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiDriverEntryPoint.h>
+#include <Library/UefiLib.h>
+#include <Library/BaseLib.h>
+#include <Library/PcdLib.h>
+#include <Library/HiiLib.h>
+#include <Protocol/AbsolutePointer.h>
+#include <Protocol/GraphicsOutput.h>
+#include <Protocol/SimpleTextIn.h>
+#include <Protocol/SimpleTextInEx.h>
+#include <Protocol/SimpleTextOut.h>
+#include <Protocol/HiiDatabase.h>
+#include <Protocol/HiiImageEx.h>
+#include <Protocol/HiiPackageList.h>
+#include <Guid/ConsoleInDevice.h>
+#include "ComponentName.h"
+
+//
+// Global Variables
+//
+extern EFI_DRIVER_BINDING_PROTOCOL   gVirtualKeyboardDriverBinding;
+extern EFI_COMPONENT_NAME_PROTOCOL   gVirtualKeyboardComponentName;
+extern EFI_COMPONENT_NAME2_PROTOCOL  gVirtualKeyboardComponentName2;
+
+///
+/// Debug raw data points
+///
+#define DEBUG_VK_POINTS               DEBUG_INFO
+
+///
+/// Debug data point scaling
+///
+#define DEBUG_VK_POINT_SCALING        DEBUG_INFO
+
+///
+/// Debug key press
+///
+#define DEBUG_VK_KEYS                 DEBUG_INFO
+
+///
+/// Debug routine entry and exit
+///
+#define DEBUG_VK_ROUTINE_ENTRY_EXIT   DEBUG_VERBOSE
+
+///
+/// Display the graphics info
+///
+#define DEBUG_VK_GRAPHICS_INFO        DEBUG_INFO
+
+///
+/// Display the timer entry and exit
+///
+#define DEBUG_VK_TIMER_ENTRY_EXIT     DEBUG_VERBOSE
+
+///
+/// Signature
+///
+#define VK_SIGNATURE                  SIGNATURE_32 ('V', 'K', 'e', 'y')
+#define VK_NOTIFY_SIGNATURE           SIGNATURE_32 ('V', 'K', 'n', 's')
+
+///
+/// Poll interval
+///
+#define VK_POLL_INTERVAL              (1000 * 1000)
+
+///
+/// Define the touch timeout in poll intervals
+///
+#define VK_REPEAT_TIMEOUT             5
+
+///
+/// TPL used to synchronize add/remove from list
+///
+#define TPL_VK_SYNC                   TPL_NOTIFY
+
+///
+/// Dimension of an array ( number of elements )
+///
+#define DIM(x)      ( sizeof ( x ) / sizeof ( x [ 0 ]))
+
+///
+/// Define Key buffer
+///
+#define MAX_KEY_BUF_SIZE 64
+
+///
+/// Define Transparent Weight
+///
+#define TRANSPARENCY_WEIGHT 50
+
+typedef struct _VK_CONTEXT VK_CONTEXT;
+
+typedef enum _VK_KEY_TYPE {
+  VkKeyNull         = 0x0000 | CHAR_NULL,
+  VkKeyBackspace    = 0x0000 | CHAR_BACKSPACE,
+  VkKeyTab          = 0x0000 | CHAR_TAB,
+  VkKeyEnter        = 0x0000 | CHAR_CARRIAGE_RETURN,
+  VkKeyScanMask     = 0x1000,
+  VkKeyEsc          = 0x1000 | SCAN_ESC,
+  VkKeyLeft         = 0x1000 | SCAN_LEFT,
+  VkKeyRight        = 0x1000 | SCAN_RIGHT,
+  VkKeyUp           = 0x1000 | SCAN_UP,
+  VkKeyDown         = 0x1000 | SCAN_DOWN,
+  VkKeyF1           = 0x1000 | SCAN_F1,
+  VkKeyF2           = 0x1000 | SCAN_F2,
+  VkKeyF3           = 0x1000 | SCAN_F3,
+  VkKeyF4           = 0x1000 | SCAN_F4,
+  VkKeyF5           = 0x1000 | SCAN_F5,
+  VkKeyF6           = 0x1000 | SCAN_F6,
+  VkKeyF7           = 0x1000 | SCAN_F7,
+  VkKeyF8           = 0x1000 | SCAN_F8,
+  VkKeyF9           = 0x1000 | SCAN_F9,
+  VkKeyF10          = 0x1000 | SCAN_F10,
+  VkKeyF11          = 0x1000 | SCAN_F11,
+  VkKeyF12          = 0x1000 | SCAN_F12,
+  VkKeySpecificMask = 0x2000,
+  VkKeyShift        = 0x2000 | 0x0000,
+  VkKeyCapslock     = 0x2000 | 0x0001,
+  VkKeyTwoPage      = 0x2000 | 0x0002,
+  VkKeyTypeMaximum  = 0xFFFF
+} VK_KEY_TYPE;
+
+typedef enum _VK_PAGE_TYPE {
+  //
+  // +---+---+---+---+---+---+---+---+---+---+---+
+  // | q | w | e | r | t | y | u | i | o | p |<X|| Line 0
+  // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+  // | | a | s | d | f | g | h | j | k | l | F2| | Line 1
+  // +-+---+---+---+---+---+---+---+---+---+---+-+
+  // |Caps | z | x | c | v | b | n | m |aU |Enter| Line 2
+  // +-----+---+---+---+---+---+---+---+---+---+-+
+  // | Esc |12#|       Space       |aL |aD |aR | | Line 3
+  // +-----+---+-------------------+---+---+---+-+
+  //
+  VkPage0,
+
+  //
+  // +---+---+---+---+---+---+---+---+---+---+---+
+  // | Q | W | E | R | T | Y | U | I | O | P |<X|| Line 0
+  // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+  // | | A | S | D | F | G | H | J | K | L | F2| | Line 1
+  // +-+---+---+---+---+---+---+---+---+---+---+-+
+  // |Caps | Z | X | C | V | B | N | M |aU |Enter| Line 2
+  // +-----+---+---+---+---+---+---+---+---+---+-+
+  // | Esc |12#|       Space       |aL |aD |aR | | Line 3
+  // +-----+---+-------------------+---+---+---+-+
+  //
+  VkPage1,
+
+  //
+  // +---+---+---+---+---+---+---+---+---+---+---+
+  // | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 |<X|| Line 0
+  // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+  // | |F1 |F2 |F3 |F4 |F5 |F6 |F7 |F8 |F9 |F10| | Line 1
+  // +-+---+---+---+---+---+---+---+---+---+---+-+
+  // |Shift| . | ; | ' | , | . | / |F11|F12|Enter| Line 2
+  // +-----+---+---+---+---+---+---+---+---+---+-+
+  // | Esc |12#|       Space       | \ | - | = | | Line 3
+  // +-----+---+-------------------+---+---+---+-+
+  //
+  VkPage2,
+
+  //
+  // +---+---+---+---+---+---+---+---+---+---+---+
+  // | ! | @ | # | $ | % | ^ | & | * | ( | ) |<X|| Line 0
+  // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+  // | |F1 |F2 |F3 |F4 |F5 |F6 |F7 |F8 |F9 |F10| | Line 1
+  // +-+---+---+---+---+---+---+---+---+---+---+-+
+  // |Shift| ~ | : | " | < | > | ? |F11|F12|Enter| Line 2
+  // +-----+---+---+---+---+---+---+---+---+---+-+
+  // | Esc |12#|       Space       | | | _ | + | | Line 3
+  // +-----+---+-------------------+---+---+---+-+
+  //
+  VkPage3,
+  VkPageMaximum
+} VK_PAGE_TYPE;
+
+typedef enum VK_DISPLAY_ATTRIBUTE {
+  VkDisplayAttributeNone,         /// No keyboard displayed
+  VkDisplayAttributeFullTop,      /// Full keyboard display at top
+  VkDisplayAttributeFullBottom,   /// Full keyboard display at bottom
+  VkDisplayAttributeSimpleTop,    /// Simple keyboard display at top
+  VkDisplayAttributeSimpleBottom, /// Simple keyboard display at bottom
+  VkDisplayAttributeMaximum
+} VK_DISPLAY_ATTRIBUTE;
+
+typedef struct _VK_STRUCT {
+  UINT16      DisStartX;
+  UINT16      DisStartY;
+  UINT16      DisEndX;
+  UINT16      DisEndY;
+  VK_KEY_TYPE PageFont[VkPageMaximum];
+} VK_STRUCT;
+
+typedef struct _VK_NOTIFY {
+  UINTN                               Signature;
+  EFI_KEY_DATA                        KeyData;
+  EFI_KEY_NOTIFY_FUNCTION             KeyNotificationFn;
+  LIST_ENTRY                          NotifyEntry;
+} VK_NOTIFY;
+
+///
+/// Virtual Keyboard context
+///
+struct _VK_CONTEXT {
+  ///
+  /// Structure identification
+  ///
+  UINTN                             Signature;
+
+  ///
+  /// Controller Handle
+  ///
+  EFI_HANDLE                        Controller;
+
+  ///
+  /// Upper level API
+  ///
+  EFI_SIMPLE_TEXT_INPUT_PROTOCOL    SimpleTextIn;
+
+  ///
+  /// Simple Text In EX
+  ///
+  EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL SimpleTextInEx;
+
+  ///
+  /// Lower level APIs
+  ///
+  EFI_ABSOLUTE_POINTER_PROTOCOL     *AbsolutePointer;
+  EFI_GRAPHICS_OUTPUT_PROTOCOL      *GraphicsOutput;
+
+  ///
+  /// Flag when the last poll indicated a touch event
+  ///
+  BOOLEAN                           TouchActive;
+
+  ///
+  /// Time to poll for touch input
+  ///
+  EFI_EVENT                         TimerEvent;
+
+  ///
+  /// HII handle to get image data used
+  ///
+  EFI_HII_HANDLE                    HiiHandle;
+  EFI_HII_IMAGE_EX_PROTOCOL         *HiiImageEx;
+
+  ///
+  /// Keyboard body background buffer information
+  ///
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL     *VkBodyBackgroundBltBuffer;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL     *VkBodyCompoundBltBuffer;
+  UINTN                             VkBodyBltSize;
+  UINTN                             VkBodyBltStartX;
+  UINTN                             VkBodyBltStartY;
+  UINTN                             VkBodyBltHeight;
+  UINTN                             VkBodyBltWidth;
+  BOOLEAN                           IsBackgroundChanged;
+
+  ///
+  /// Icon buffer information
+  ///
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL     *IconBltBuffer;
+  UINTN                             IconBltSize;
+  UINTN                             IconBltHeight;
+  UINTN                             IconBltWidth;
+
+  ///
+  /// Full icon background buffer information
+  ///
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL     *FullIconBackBuffer;
+  UINTN                             FullIconBackStartX;
+  UINTN                             FullIconBackStartY;
+  UINTN                             FullIconBackHeight;
+  UINTN                             FullIconBackWidth;
+  UINTN                             FullIconBackSize;
+  BOOLEAN                           FullIconUpdatedFlag;
+
+  ///
+  /// Simple icon background buffer information
+  ///
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL     *SimIconBackBuffer;
+  UINTN                             SimIconBackStartX;
+  UINTN                             SimIconBackStartY;
+  UINTN                             SimIconBackHeight;
+  UINTN                             SimIconBackWidth;
+  UINTN                             SimIconBackSize;
+  BOOLEAN                           SimIconUpdatedFlag;
+
+  ///
+  /// Small Icon
+  ///
+  EFI_IMAGE_INPUT                   *SmallIcon;
+
+  ///
+  /// Full Icon
+  ///
+  EFI_IMAGE_INPUT                   *FullIcon;
+
+  ///
+  /// Simple Key body
+  ///
+  EFI_IMAGE_INPUT                   *SimKeyBody;
+
+  ///
+  /// Digital key body
+  ///
+  EFI_IMAGE_INPUT                   *DigKeyBody;
+
+  ///
+  /// Capital Letter Key board
+  ///
+  EFI_IMAGE_INPUT                   *CapLeKeyBody;
+
+  ///
+  /// Screen check buffer.
+  /// This is used to check if screen is kept scrolling up.
+  ///
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL     *ScreenCheckBuffer;
+  UINTN                             ScreenCheckBufferSize;
+
+  ///
+  /// Key state
+  ///
+  BOOLEAN                           KeyPressed;
+
+  ///
+  /// Keyboard display status
+  ///
+  VK_DISPLAY_ATTRIBUTE              CurrentKeyboardDisplay;
+  VK_DISPLAY_ATTRIBUTE              TargetKeyboardDisplay;
+
+  ///
+  /// Keyboard icon display status
+  ///
+  BOOLEAN                           IsIconShowed;
+  UINT8                             IconReDrawCheck;
+
+  ///
+  /// Keyboard body Image address
+  /// Size of KeyboardBodyPtr must larger than mFullKeyboardBody
+  ///
+  UINT32                            NumOfKeysInfo;
+  VK_STRUCT                         KeyboardBodyPtr[50];
+
+  ///
+  /// KeyBuffer
+  ///
+  EFI_EVENT                         KeyNotifyProcessEvent;
+  EFI_KEY_TOGGLE_STATE              KeyToggleState;
+  EFI_KEY_DATA                      Keybuffer[MAX_KEY_BUF_SIZE];
+  UINT8                             KeyStartIndex;
+  UINT8                             KeyEndIndex;
+  UINT16                            KeyTouchedTimeOut;
+  BOOLEAN                           IsShiftKeyFlag;
+  BOOLEAN                           IsCapsLockFlag;
+  BOOLEAN                           IsSupportPartialKey;
+  BOOLEAN                           IsRedrawUpdateUI;
+  VK_PAGE_TYPE                      PageNumber;
+  LIST_ENTRY                        NotifyList;
+};
+
+///
+/// Locate VK_CONTEXT from protocol
+///
+#define VK_CONTEXT_FROM_PROTOCOL(a)                CR (a, VK_CONTEXT, SimpleTextIn, VK_SIGNATURE)
+#define VK_CONTEXT_FROM_SIMPLETEXTINEX_PROTOCOL(a) CR (a, VK_CONTEXT, SimpleTextInEx, VK_SIGNATURE)
+#define VK_CONTEXT_FROM_VKBD_PROTOCOL(a)           CR (a, VK_CONTEXT, VkbdProtocol, VK_SIGNATURE)
+
+/**
+  Start the virtual keyboard driver
+
+  This routine allocates the necessary resources for the driver.
+
+  This routine is called by VirtualKeyboardDriverStart to complete the driver
+  initialization.
+
+  @param[in, out] VkContext        Address of an VK_CONTEXT structure
+  @param[in] Controller            Handle of device to work with.
+
+  @retval EFI_SUCCESS              Driver API properly initialized
+
+**/
+EFI_STATUS
+VkApiStart (
+  IN OUT VK_CONTEXT *VkContext,
+  IN EFI_HANDLE Controller
+  );
+
+/**
+  Stop the virtual keyboard driver
+
+  This routine releases the resources allocated by VKApiStart.
+
+  This routine is called by VirtualKeyboardDriverStop to initiate the driver
+  shutdown.
+
+  @param[in] VkContext        Address of an VK_CONTEXT structure
+
+**/
+VOID
+VkApiStop (
+  IN VK_CONTEXT *VkContext
+  );
+
+/**
+  Resets the input device hardware.
+
+  The Reset() function resets the input device hardware. As part
+  of initialization process, the firmware/device will make a quick
+  but reasonable attempt to verify that the device is functioning.
+  If the ExtendedVerification flag is TRUE the firmware may take
+  an extended amount of time to verify the device is operating on
+  reset. Otherwise the reset operation is to occur as quickly as
+  possible. The hardware verification process is not defined by
+  this specification and is left up to the platform firmware or
+  driver to implement.
+
+  @param[in] This                 A pointer to the EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL instance.
+
+  @param[in] ExtendedVerification Indicates that the driver may perform a more exhaustive
+                                  verification operation of the device during reset.
+
+  @retval EFI_SUCCESS             The device was reset.
+  @retval EFI_DEVICE_ERROR        The device is not functioning correctly and could not be reset.
+
+**/
+EFI_STATUS
+EFIAPI
+VkKeyboardReset (
+  IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,
+  IN BOOLEAN                        ExtendedVerification
+  );
+
+/**
+  Reads the next keystroke from the input device. The WaitForKey Event can
+  be used to test for existence of a keystroke via WaitForEvent () call.
+
+  @param[in]  This         Protocol instance pointer.
+  @param[out] Key          Driver may perform diagnostics on reset.
+
+  @retval EFI_SUCCESS      The keystroke information was returned.
+  @retval EFI_NOT_READY    There was no keystroke data available.
+  @retval EFI_DEVICE_ERROR The keystroke information was not returned due to
+                           hardware errors.
+
+**/
+EFI_STATUS
+EFIAPI
+VkKeyboardReadKeyStroke (
+  IN  EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,
+  OUT EFI_INPUT_KEY                  *Key
+  );
+
+/**
+  Resets the input device hardware.
+
+  The Reset() function resets the input device hardware. As part
+  of initialization process, the firmware/device will make a quick
+  but reasonable attempt to verify that the device is functioning.
+  If the ExtendedVerification flag is TRUE the firmware may take
+  an extended amount of time to verify the device is operating on
+  reset. Otherwise the reset operation is to occur as quickly as
+  possible. The hardware verification process is not defined by
+  this specification and is left up to the platform firmware or
+  driver to implement.
+
+  @param[in] This                 A pointer to the EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL instance.
+
+  @param[in] ExtendedVerification Indicates that the driver may perform a more exhaustive
+                                  verification operation of the device during reset.
+
+  @retval EFI_SUCCESS             The device was reset.
+  @retval EFI_DEVICE_ERROR        The device is not functioning correctly and could not be reset.
+
+**/
+EFI_STATUS
+EFIAPI
+VkKeyboardResetEx (
+  IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+  IN BOOLEAN                           ExtendedVerification
+  );
+
+/**
+  Reads the next keystroke from the input device.
+
+  @param[in]  This               Protocol instance pointer.
+  @param[out] KeyData            A pointer to a buffer that is filled in with the keystroke
+                                 state data for the key that was pressed.
+
+  @retval EFI_SUCCESS            The keystroke information was returned.
+  @retval EFI_NOT_READY          There was no keystroke data available.
+  @retval EFI_INVALID_PARAMETER  This or KeyData is NULL.
+
+**/
+EFI_STATUS
+EFIAPI
+VkKeyboardReadKeyStrokeEx (
+  IN  EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+  OUT EFI_KEY_DATA                      *KeyData
+  );
+
+/**
+  Set certain state for the input device.
+
+  @param[in] This                 Protocol instance pointer.
+  @param[in] KeyToggleState       A pointer to the EFI_KEY_TOGGLE_STATE to set the
+                                  state for the input device.
+
+  @retval EFI_SUCCESS             The device state was set appropriately.
+  @retval EFI_INVALID_PARAMETER   This or KeyToggleState is NULL.
+
+**/
+EFI_STATUS
+EFIAPI
+VkKeyboardSetState (
+  IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+  IN EFI_KEY_TOGGLE_STATE              *KeyToggleState
+  );
+
+/**
+  Register a notification function for a particular keystroke for the input device.
+
+  @param[in]  This                        Protocol instance pointer.
+  @param[in]  KeyData                     A pointer to a buffer that is filled in with the keystroke
+                                          information data for the key that was pressed.
+  @param[in]  KeyNotificationFunction     Points to the function to be called when the key
+                                          sequence is typed specified by KeyData.
+  @param[out] NotifyHandle                Points to the unique handle assigned to the registered notification.
+
+  @retval EFI_SUCCESS                     The notification function was registered successfully.
+  @retval EFI_OUT_OF_RESOURCES            Unable to allocate resources for necessary data structures.
+  @retval EFI_INVALID_PARAMETER           KeyData or NotifyHandle or KeyNotificationFunction is NULL.
+
+**/
+EFI_STATUS
+EFIAPI
+VkKeyboardRegisterKeyNotify (
+  IN  EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+  IN  EFI_KEY_DATA                      *KeyData,
+  IN  EFI_KEY_NOTIFY_FUNCTION           KeyNotificationFunction,
+  OUT EFI_HANDLE                        *NotifyHandle
+  );
+
+/**
+  Remove a registered notification function from a particular keystroke.
+
+  @param[in] This                Protocol instance pointer.
+  @param[in] NotificationHandle  The handle of the notification function being unregistered.
+
+  @retval EFI_SUCCESS            The notification function was unregistered successfully.
+  @retval EFI_INVALID_PARAMETER  The NotificationHandle is invalid
+
+**/
+EFI_STATUS
+EFIAPI
+VkKeyboardUnregisterKeyNotify (
+  IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
+  IN EFI_HANDLE                        NotificationHandle
+  );
+
+/**
+  Draw key board on the display
+
+  @param[in] VkContext          Graphic Protocol for draw the alphabet.
+
+  @retval EFI_SUCCESS           Draw keyboard was done.
+  @retval EFI_UNSUPPORTED       Did not get key mapping table.
+
+**/
+EFI_STATUS
+DrawKeyboardLayout (
+  IN VK_CONTEXT *VkContext
+  );
+
+/**
+  Clear the keyboard body
+
+  @param[in] VkContext          Code context.
+
+  @retval EFI_SUCCESS           Clear rectangle is done.
+
+**/
+EFI_STATUS
+HideVkBody (
+  IN VK_CONTEXT *VkContext
+  );
+
+/**
+  Clear the keyboard icon
+
+  @param[in] VkContext          Code context.
+
+  @retval EFI_SUCCESS           Clear rectangle is done.
+
+**/
+EFI_STATUS
+HideVkIcon (
+  IN VK_CONTEXT *VkContext
+  );
+
+/**
+  Use to draw the keyboard icon.
+
+  @param[in] VkContext  Pointer to virtual keyboard's context
+  @param[in] VkImage    Image of keyboard to display on the screen.
+  @param[in] Attribute  Attribute of keyboard to display on the screen.
+
+  @retval EFI_SUCCESS           ConsoleControl has been flipped to graphics and keyboard icon displayed.
+  @retval EFI_UNSUPPORTED       KeyboardFile not found
+  @retval EFI_INVALID_PARAMETER Attribute is unknown.
+
+**/
+EFI_STATUS
+EFIAPI
+DrawVkIcon (
+  IN VK_CONTEXT                    *VkContext,
+  IN EFI_IMAGE_INPUT               *VkImage,
+  IN VK_DISPLAY_ATTRIBUTE          Attribute
+  );
+
+/**
+  Use to draw the keyboard.
+
+  @param[in] VkContext  Pointer to virtual keyboard's context
+  @param[in] VkImage    Image of keyboard to display on the screen.
+  @param[in] Attribute  Attribute of keyboard to display on the screen.
+
+  @retval EFI_SUCCESS           ConsoleControl has been flipped to graphics and keyboard displayed.
+  @retval EFI_UNSUPPORTED       KeyboardFile not found
+  @retval EFI_INVALID_PARAMETER Attribute is unknown.
+
+**/
+EFI_STATUS
+EFIAPI
+DrawVkBody (
+  IN VK_CONTEXT                    *VkContext,
+  IN EFI_IMAGE_INPUT               *VkImage,
+  IN VK_DISPLAY_ATTRIBUTE          Attribute
+  );
+
+/**
+  Get unicode by VkContext->PageNumber and VkContext->KeyboardBodyPtr.
+
+  @param[in]  VkContext            Address of an VK_CONTEXT structure.
+  @param[in]  KeyItem              Key Item.
+  @param[out] FontPtr              Follow VkContext->PageNumber to translate
+                                   font unicode.
+
+  @retval EFI_SUCCESS              Finish translating FontPtr.
+  @retval EFI_INVALID_PARAMETER    VkContext or FontPtr is NULL.
+
+**/
+EFI_STATUS
+VkGetMappingFont (
+  IN  VK_CONTEXT *VkContext,
+  IN  VK_STRUCT  KeyItem,
+  OUT UINT32     *FontPtr
+  );
+
+/**
+  This routine is used to check if icon has been cleared.
+
+  @param[in] VkContext  Pointer to virtual keyboard's context
+
+  @retval EFI_SUCCESS   Function completed.
+
+**/
+EFI_STATUS
+CheckIconCleared (
+  IN VK_CONTEXT *VkContext
+  );
+
+/**
+  ConvertCoordinate - Convert the touch panel's coordinate to display's coordinate.
+
+  @param[in]  VkContext             Virtual Keyboard context.
+  @param[in]  Point                 The coordinate reported from touch panel.
+  @param[out] TouchX                The coordinate X converted to display panel.
+  @param[out] TouchY                The coordinate Y converted to display panel..
+
+  @retval EFI_SUCCESS               Convert success.
+
+**/
+EFI_STATUS
+ConvertCoordinate (
+  IN  VK_CONTEXT                 *VkContext,
+  IN  EFI_ABSOLUTE_POINTER_STATE Point,
+  OUT UINT32                     *TouchX,
+  OUT UINT32                     *TouchY
+  );
+
+/**
+  This routine is used to check if screen has been cleared.
+
+  @param[in] VkContext  Pointer to virtual keyboard's context
+
+  @retval EFI_SUCCESS   Function completed.
+
+**/
+EFI_STATUS
+CheckScreenCleared (
+  IN VK_CONTEXT *VkContext
+  );
+
+/**
+  This routine is used to check if background beneath virtual keyboard has been cleared.
+
+  @param[in] VkContext  Pointer to virtual keyboard's context
+
+  @retval EFI_SUCCESS   Function completed.
+
+**/
+EFI_STATUS
+CheckBackgroundChanged (
+  IN VK_CONTEXT *VkContext
+  );
+
+/**
+  To prevent screen keyboard layout occur scroll up
+
+  @param[in, out]  VkContext            Address of an VK_CONTEXT structure.
+
+**/
+VOID
+PreventScreenScrollUp (
+  IN OUT VK_CONTEXT *VkContext
+  );
+
+/**
+  Set the position of character.
+
+  @param[in] VkContext      Address of an VK_CONTEXT structure.
+  @param[in] DestX          X position.
+  @param[in] DestY          Y position.
+
+  @retval EFI_SUCCESS       Success for the function.
+  @retval Others            An unexpected error occurred.
+
+**/
+EFI_STATUS
+SetCharacterPosition (
+  IN VK_CONTEXT *VkContext,
+  IN UINT32     DestX,
+  IN UINT32     DestY
+  );
+
+/**
+  Set the keyboard layout.
+
+  @param[in] VkContext          Graphic Protocol for draw the alphabet.
+  @param[in] Index              The layout selected.
+
+  @retval EFI_SUCCESS           Draw keyboard was done.
+  @retval Others                An unexpected error occurred.
+
+**/
+EFI_STATUS
+KeyboardLayoutHandler (
+  IN VK_CONTEXT *VkContext,
+  IN UINT32     Index
+  );
+
+/**
+  Save the background blt buffer.
+
+  @param[in] VkContext           Address of an VK_CONTEXT structure.
+  @param[in] BltSize             Size of blt.
+
+  @retval EFI_SUCCESS            Success for the function.
+  @retval EFI_OUT_OF_RESOURCES   Allocate memory failed.
+
+**/
+EFI_STATUS
+EFIAPI
+SaveVkBodyBackgroundBltBuffer (
+  IN VK_CONTEXT *VkContext,
+  IN UINTN      BltSize
+  );
+
+/**
+  Restore the background blt buffer.
+
+  @param[in] VkContext           Address of an VK_CONTEXT structure.
+
+  @retval EFI_SUCCESS            Success for the function.
+  @retval EFI_UNSUPPORTED        Input blt buffer is NULL.
+  @retval Others                 An unexpected error occurred.
+
+**/
+EFI_STATUS
+EFIAPI
+RestoreVkBodyBackgroundBltBuffer (
+  IN VK_CONTEXT *VkContext
+  );
+
+/**
+  Save the icon background blt buffer.
+
+  @param[in] VkContext      Address of an VK_CONTEXT structure.
+  @param[in] IconType       The icon type.
+
+  @retval EFI_SUCCESS            Success for the function.
+  @retval EFI_OUT_OF_RESOURCES   Allocate memory failed.
+  @retval Others                 An unexpected error occurred.
+
+**/
+EFI_STATUS
+EFIAPI
+SaveVkIconBackgroundBltBuffer (
+  IN VK_CONTEXT           *VkContext,
+  IN VK_DISPLAY_ATTRIBUTE IconType
+  );
+#endif
diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyboardDriver.c b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyboardDriver.c
new file mode 100644
index 0000000000..523c662b29
--- /dev/null
+++ b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyboardDriver.c
@@ -0,0 +1,515 @@
+/** @file
+  Virtual Keyboard driver.
+
+  Copyright (c) 2012 - 2020, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "VirtualKeyboard.h"
+
+UINT32         mOrigConOutRow      = 0;
+UINT32         mOrigSetupConOutRow = 0;
+EFI_HII_HANDLE mHiiHandle          = NULL;
+/**
+  Verify the controller type
+
+  This routine determines if the pointer and GOP are available.
+
+  This routine is called by the UEFI driver framework during connect
+  processing.
+
+  @param[in] This                 Protocol instance pointer.
+  @param[in] Controller           Handle of device to test.
+  @param[in] RemainingDevicePath  Not used.
+
+  @retval EFI_SUCCESS             This driver supports this device.
+  @retval other                   This driver does not support this device.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardDriverSupported (
+  IN EFI_DRIVER_BINDING_PROTOCOL *This,
+  IN EFI_HANDLE                  Controller,
+  IN EFI_DEVICE_PATH_PROTOCOL    *RemainingDevicePath
+  )
+{
+  EFI_GRAPHICS_OUTPUT_PROTOCOL  *GraphicsOutput;
+  EFI_STATUS                    Status;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverSupported Start\n"));
+
+  //
+  // Verify that the driver is not already started
+  //
+  Status = gBS->OpenProtocol (
+                  Controller,
+                  &gEfiCallerIdGuid,
+                  NULL,
+                  This->DriverBindingHandle,
+                  Controller,
+                  EFI_OPEN_PROTOCOL_TEST_PROTOCOL
+                  );
+  if (!EFI_ERROR (Status)) {
+    Status = EFI_ALREADY_STARTED;
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "ERROR - VK has already initialized\n"));
+    goto Error;
+  }
+
+  //
+  // Determine if the pointer protocol is available.
+  // This should be installed in touch driver.
+  //
+  Status = gBS->OpenProtocol (
+                  Controller,
+                  &gEfiAbsolutePointerProtocolGuid,
+                  NULL,
+                  This->DriverBindingHandle,
+                  Controller,
+                  EFI_OPEN_PROTOCOL_TEST_PROTOCOL
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "ERROR - VK Absolute pointer protocol not found\n"));
+    goto Error;
+  }
+
+  Status = gBS->OpenProtocol (
+                  Controller,
+                  &gEdkiiTouchPanelGuid,
+                  NULL,
+                  This->DriverBindingHandle,
+                  Controller,
+                  EFI_OPEN_PROTOCOL_TEST_PROTOCOL
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "ERROR - VK Touch Panel Guid not found\n"));
+    goto Error;
+  }
+
+  //
+  // Determine if the graphics output protocol is available
+  //
+  Status = gBS->HandleProtocol (
+                  gST->ConsoleOutHandle,
+                  &gEfiGraphicsOutputProtocolGuid,
+                  (VOID **)&GraphicsOutput
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "ERROR - VK Graphics output protocol not found\n"));
+    goto Error;
+  }
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_INFO, "VirtualKeyboardDriverSupported Success, Status: %r\n", Status));
+  goto End;
+
+Error:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverSupported Failed, Status: %r\n", Status));
+
+End:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverSupported End\n"));
+  return Status;
+}
+
+/**
+  Connect to the controller
+
+  This routine initializes an instance of the virutal keyboard driver for this
+  controller.
+
+  This routine is called by the UEFI driver framework during connect
+  processing if the controller passes the tests in I2cBusDriverSupported.
+
+  @param[in] This                 Protocol instance pointer.
+  @param[in] Controller           Handle of device to work with.
+  @param[in] RemainingDevicePath  Not used, always produce all possible children.
+
+  @retval EFI_SUCCESS             This driver is added to Controller.
+  @retval other                   This driver does not support this device.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardDriverStart (
+  IN EFI_DRIVER_BINDING_PROTOCOL *This,
+  IN EFI_HANDLE                  Controller,
+  IN EFI_DEVICE_PATH_PROTOCOL    *RemainingDevicePath
+  )
+{
+  VK_CONTEXT *VkContext;
+  EFI_STATUS Status;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_INFO, "VirtualKeyboardDriverStart Start\n"));
+
+  VkContext = AllocateZeroPool (sizeof (VK_CONTEXT));
+  if (VkContext == NULL) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR - No memory for virtual keyboard driver\n"));
+    Status = EFI_OUT_OF_RESOURCES;
+    ASSERT_EFI_ERROR (Status);
+    goto Error;
+  }
+
+  Status = gBS->OpenProtocol (
+                  Controller,
+                  &gEfiAbsolutePointerProtocolGuid,
+                  (VOID**) &VkContext->AbsolutePointer,
+                  This->DriverBindingHandle,
+                  Controller,
+                  EFI_OPEN_PROTOCOL_BY_DRIVER
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR - Failed to open absolute pointer protocol, Status: %r\n", Status));
+    goto Error;
+  }
+
+  Status = gBS->OpenProtocol (
+                  Controller,
+                  &gEdkiiTouchPanelGuid,
+                  NULL,
+                  This->DriverBindingHandle,
+                  Controller,
+                  EFI_OPEN_PROTOCOL_TEST_PROTOCOL
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR - TouchPanel GUID not found, Status: %r\n", Status));
+    goto Error;
+  }
+
+  Status = gBS->HandleProtocol (
+                  gST->ConsoleOutHandle,
+                  &gEfiGraphicsOutputProtocolGuid,
+                  (VOID**) &VkContext->GraphicsOutput
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR - Graphics output protocol not available, Status: %r\n", Status));
+    goto Error;
+  }
+
+  VkContext->HiiHandle = mHiiHandle;
+  Status = VkApiStart (VkContext, Controller);
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR - Failed to VkApiStart, Status: %r\n", Status));
+    goto Error;
+  }
+
+  Status = gBS->InstallMultipleProtocolInterfaces (
+                  &Controller,
+                  &gEfiCallerIdGuid,
+                  VkContext,
+                  &gEfiSimpleTextInProtocolGuid,
+                  &VkContext->SimpleTextIn,
+                  &gEfiSimpleTextInputExProtocolGuid,
+                  &VkContext->SimpleTextInEx,
+                  &gEfiConsoleInDeviceGuid,
+                  NULL,
+                  NULL
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR - Failed to install VK protocols, Status: %r\n", Status));
+    ASSERT_EFI_ERROR (Status);
+    goto Error;
+  }
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_INFO, "VirtualKeyboardDriverStart Success, Status: %r\n", Status));
+  goto End;
+
+Error:
+  if (VkContext != NULL) {
+    FreePool (VkContext);
+  }
+
+  gBS->CloseProtocol (
+         Controller,
+         &gEfiAbsolutePointerProtocolGuid,
+         This->DriverBindingHandle,
+         Controller
+         );
+
+  //
+  // Restore setting if connect device fail.
+  //
+  PcdSet32S (PcdConOutRow, mOrigConOutRow);
+  PcdSet32S (PcdSetupConOutRow, mOrigSetupConOutRow);
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverStart Failed, Status: %r\n", Status));
+
+End:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverStart End\n"));
+
+  return Status;
+}
+
+/**
+  Disconnect from the controller.
+
+  This routine disconnects from the controller.
+
+  This routine is called by DriverUnload when the I2C bus driver
+  is being unloaded.
+
+  @param[in] This                 Protocol instance pointer.
+  @param[in] Controller           Handle of device to stop driver on.
+  @param[in] NumberOfChildren     How many children need to be stopped.
+  @param[in] ChildHandleBuffer    Not used.
+
+  @retval EFI_SUCCESS             This driver is removed Controller.
+  @retval EFI_DEVICE_ERROR        The device could not be stopped due to a device error.
+  @retval other                   This driver was not removed from this device.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardDriverStop (
+  IN  EFI_DRIVER_BINDING_PROTOCOL *This,
+  IN  EFI_HANDLE                  Controller,
+  IN  UINTN                       NumberOfChildren,
+  IN  EFI_HANDLE                  *ChildHandleBuffer
+  )
+{
+  VK_CONTEXT                          *VkContext;
+  EFI_STATUS                          Status;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverStop Start\n"));
+
+  Status = gBS->OpenProtocol (
+                  Controller,
+                  &gEfiCallerIdGuid,
+                  (VOID**)&VkContext,
+                  This->DriverBindingHandle,
+                  Controller,
+                  EFI_OPEN_PROTOCOL_BY_DRIVER | EFI_OPEN_PROTOCOL_EXCLUSIVE
+                  );
+  if (EFI_ERROR (Status)) {
+    Status = EFI_SUCCESS;
+    goto Success;
+  }
+
+  //
+  // Done with the driver protocol
+  //
+  Status = gBS->CloseProtocol (
+                  Controller,
+                  &gEfiCallerIdGuid,
+                  This->DriverBindingHandle,
+                  Controller
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "ERROR - Failed to close the VK protocol, Status: %r\n", Status));
+    goto Error;
+  }
+
+  //
+  // Remove ConsoleIn protocols first to close the link in ConSplitter
+  //
+  Status = gBS->OpenProtocol (
+                  Controller,
+                  &gEfiConsoleInDeviceGuid,
+                  NULL,
+                  This->DriverBindingHandle,
+                  Controller,
+                  EFI_OPEN_PROTOCOL_TEST_PROTOCOL
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "ERROR - Failed to uninstall the protocols, Status: %r\n", Status));
+    goto Error;
+  }
+
+  //
+  // Remove the remaining protocols
+  //
+  Status = gBS->UninstallMultipleProtocolInterfaces (
+                  Controller,
+                  &gEfiCallerIdGuid,
+                  VkContext,
+                  &gEfiSimpleTextInProtocolGuid,
+                  &VkContext->SimpleTextIn,
+                  &gEfiSimpleTextInputExProtocolGuid,
+                  &VkContext->SimpleTextInEx,
+                  &gEfiConsoleInDeviceGuid,
+                  NULL,
+                  NULL
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "ERROR - Failed to uninstall the protocols, Status: %r\n", Status));
+    goto Error;
+  }
+
+  //
+  // Stop the driver
+  //
+  VkApiStop (VkContext);
+
+  //
+  // Release the pointer protocol upon failure
+  //
+  Status = gBS->CloseProtocol (
+                  Controller,
+                  &gEfiAbsolutePointerProtocolGuid,
+                  This->DriverBindingHandle,
+                  Controller
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "ERROR - Failed to close absolute pointer protocol, Status: %r\n", Status));
+    goto Error;
+  }
+
+  //
+  // Release VkContext
+  //
+  if (VkContext != NULL) {
+    FreePool (VkContext);
+  }
+
+Success:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverStop Success, Status: %r\n", Status));
+  goto End;
+
+Error:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverStop Failed, Status: %r\n", Status));
+
+End:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverStop End\n"));
+  return Status;
+}
+
+/**
+  Unloads an image.
+
+  @param[in] ImageHandle        Handle that identifies the image to be unloaded.
+
+  @retval EFI_SUCCESS           The image has been unloaded.
+  @retval EFI_INVALID_PARAMETER ImageHandle is not a valid image handle.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardDriverUnload (
+  IN EFI_HANDLE ImageHandle
+  )
+{
+  EFI_STATUS                 Status;
+  EFI_HANDLE                 *HandleBuffer;
+  UINTN                      HandleCount;
+  UINTN                      Index;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverUnload Start\n"));
+
+  //
+  // Retrieve array of all handles in the handle database
+  //
+  Status = gBS->LocateHandleBuffer (
+                  AllHandles,
+                  NULL,
+                  NULL,
+                  &HandleCount,
+                  &HandleBuffer
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "ERROR - Failed to locate handle buffer, Status: %r\n", Status));
+    ASSERT_EFI_ERROR (Status);
+    goto Error;
+  }
+
+  //
+  // Disconnect the current driver from handles in the handle database
+  //
+  for (Index = 0; Index < HandleCount; Index++) {
+    gBS->DisconnectController (HandleBuffer[Index], ImageHandle, NULL);
+  }
+
+  //
+  // Free the array of handles
+  //
+  if (HandleBuffer != NULL) {
+    FreePool (HandleBuffer);
+  }
+
+  //
+  // Uninstall protocols installed in the driver entry point
+  //
+  Status = gBS->UninstallMultipleProtocolInterfaces (
+                  ImageHandle,
+                  &gEfiDriverBindingProtocolGuid,
+                  &gVirtualKeyboardDriverBinding,
+                  &gEfiComponentNameProtocolGuid,
+                  &gVirtualKeyboardComponentName,
+                  &gEfiComponentName2ProtocolGuid,
+                  &gVirtualKeyboardComponentName2,
+                  NULL
+                  );
+  if (EFI_ERROR (Status)) {
+    ASSERT_EFI_ERROR (Status);
+    goto Error;
+  }
+
+  HiiRemovePackages (mHiiHandle);
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverUnload Success, Status: %r\n", Status));
+  goto End;
+
+Error:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverUnload Failed, Status: %r\n", Status));
+
+End:
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverUnload End\n"));
+  return Status;
+}
+
+EFI_DRIVER_BINDING_PROTOCOL gVirtualKeyboardDriverBinding = {
+  VirtualKeyboardDriverSupported,
+  VirtualKeyboardDriverStart,
+  VirtualKeyboardDriverStop,
+  0x10,
+  NULL,
+  NULL
+};
+
+/**
+  This is the declaration of an EFI image entry point. This entry point is
+  the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including
+  both device drivers and bus drivers.
+
+  @param  ImageHandle           The firmware allocated handle for the UEFI image.
+  @param  SystemTable           A pointer to the EFI System Table.
+
+  @retval EFI_SUCCESS           The operation completed successfully.
+  @retval Others                An unexpected error occurred.
+
+**/
+EFI_STATUS
+EFIAPI
+VirtualKeyboardDriverEntryPoint (
+  IN EFI_HANDLE       ImageHandle,
+  IN EFI_SYSTEM_TABLE *SystemTable
+  )
+{
+  EFI_STATUS                     Status;
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverEntryPoint Start\n"));
+  //
+  // Install UEFI Driver Model protocol(s).
+  //
+  Status = EfiLibInstallDriverBindingComponentName2 (
+             ImageHandle,
+             SystemTable,
+             &gVirtualKeyboardDriverBinding,
+             ImageHandle,
+             &gVirtualKeyboardComponentName,
+             &gVirtualKeyboardComponentName2
+             );
+  ASSERT_EFI_ERROR (Status);
+
+  mHiiHandle = HiiAddPackages (
+                 &gEfiCallerIdGuid,
+                 NULL,
+                 VirtualKeyboardDxeImages,
+                 NULL
+                 );
+  ASSERT (mHiiHandle != NULL);
+
+  mOrigConOutRow      = PcdGet32 (PcdConOutRow);
+  mOrigSetupConOutRow = PcdGet32 (PcdSetupConOutRow);
+
+  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverEntryPoint End\n"));
+  return Status;
+}
diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyboardDxe.inf b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyboardDxe.inf
new file mode 100644
index 0000000000..38843443e1
--- /dev/null
+++ b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyboardDxe.inf
@@ -0,0 +1,78 @@
+## @file
+# Instance of virtual keyboard driver binding protocol.
+#
+# Compliant with efi driver model, 1. VirtualKeyboardDriverSupported
+# determines if the pointer and GOP are available. 2.
+# VirtualKeyboardDriverStart initializes an instance of the virtual
+# keyboard driver for a particular controller. 3.
+# VirtualKeyboardDriverStop is called by DriverUnload when the I2C bus
+# driver is being unload.
+#
+# Copyright (c) 2012 - 2020, Intel Corporation. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x00010017
+  BASE_NAME                      = VirtualKeyboardDxe
+  FILE_GUID                      = E4735AAC-9C27-493f-86EA-9EFF43D7ADCD
+  VERSION_STRING                 = 2.0
+  MODULE_TYPE                    = UEFI_DRIVER
+  ENTRY_POINT                    = VirtualKeyboardDriverEntryPoint
+  UNLOAD_IMAGE                   = VirtualKeyboardDriverUnload
+
+#
+#  VALID_ARCHITECTURES           = IA32 X64
+#  DRIVER_BINDING                = gVirtualKeyboardDriverBinding;
+#  COMPONENT_NAME                = gVirtualKeyboardComponentName;
+#  COMPONENT_NAME2               = gVirtualKeyboardComponentName2;
+#
+
+[LibraryClasses]
+  BaseMemoryLib
+  DebugLib
+  MemoryAllocationLib
+  UefiBootServicesTableLib
+  UefiDriverEntryPoint
+  UefiLib
+  PcdLib
+  HiiLib
+
+[Packages]
+  MdePkg/MdePkg.dec
+  MdeModulePkg/MdeModulePkg.dec
+  VirtualKeyboardFeaturePkg/VirtualKeyboardFeaturePkg.dec
+
+[Pcd]
+  gEfiMdeModulePkgTokenSpaceGuid.PcdConOutRow
+  gEfiMdeModulePkgTokenSpaceGuid.PcdSetupConOutRow
+
+[Sources]
+  CapitalLetterKeyboard.bmp
+  DigitKeyboard.bmp
+  FullIcon.bmp
+  SimpleIcon.bmp
+  SimpleKeyboard.bmp
+  KeyboardLayout.idf
+  KeyboardLayout.c
+  ComponentName.c
+  ComponentName.h
+  Keyboard.c
+  VirtualKeyboard.h
+  VirtualKeyboardDriver.c
+
+[Protocols]
+  gEfiAbsolutePointerProtocolGuid               ## TO_START
+  gEfiDriverBindingProtocolGuid                 ## PRODUCES
+  gEfiGraphicsOutputProtocolGuid                ## TO_START
+  gEfiSimpleTextInProtocolGuid                  ## BY_START
+  gEfiSimpleTextInputExProtocolGuid             ## BY_START
+  gEfiHiiImageExProtocolGuid                    ## TO_START
+
+[Guids]
+  gEfiConsoleInDeviceGuid                       ## SOMETIMES_PRODUCES
+  gEdkiiTouchPanelGuid                          ## TO_START
+
+[Depex]
+  gEfiHiiDatabaseProtocolGuid
diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardFeaturePkg.dec b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardFeaturePkg.dec
new file mode 100644
index 0000000000..c26db01f09
--- /dev/null
+++ b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardFeaturePkg.dec
@@ -0,0 +1,26 @@
+## @file
+# This package provides advanced feature functionality for User Authentication support.
+# This package should only depend on EDK II Core packages, IntelSiliconPkg, and MinPlatformPkg.
+#
+# The DEC files are used by the utilities that parse DSC and
+# INF files to generate AutoGen.c and AutoGen.h files
+# for the build infrastructure.
+#
+# Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+  DEC_SPECIFICATION = 0x00010017
+  PACKAGE_NAME      = VirtualKeyboardFeaturePkg
+  PACKAGE_GUID      = A40DFD69-3552-40E8-8D3D-89741B03B9E1
+  PACKAGE_VERSION   = 0.1
+
+[Includes]
+  Include
+
+[Guids]
+  ## GUID used for VirtualKeyboardDriver to open TouchPanel protocol.
+  gEdkiiTouchPanelGuid                             = { 0x91b1d27b, 0xe126, 0x48d1, { 0x82, 0x34, 0xd2, 0x8b, 0x81, 0xc8, 0x83, 0x62 }}
diff --git a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardFeaturePkg.dsc b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardFeaturePkg.dsc
new file mode 100644
index 0000000000..ea2005c6d2
--- /dev/null
+++ b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardFeaturePkg.dsc
@@ -0,0 +1,30 @@
+## @file
+# This is a build description file for the Virtual Keyboard advanced feature.
+# This package should only depend on EDK II Core packages, IntelSiliconPkg, and MinPlatformPkg.
+#
+# The DEC files are used by the utilities that parse DSC and
+# INF files to generate AutoGen.c and AutoGen.h files
+# for the build infrastructure.
+#
+# Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+  PLATFORM_NAME                  = VirtualKeyboardFeaturePkg
+  PLATFORM_GUID                  = 6D396683-C82B-41D5-84E7-BB6E13B7C2BF
+  PLATFORM_VERSION               = 0.1
+  DSC_SPECIFICATION              = 0x00010005
+  OUTPUT_DIRECTORY               = Build/$(PLATFORM_NAME)
+  SUPPORTED_ARCHITECTURES        = IA32|X64
+  BUILD_TARGETS                  = DEBUG|RELEASE|NOOPT
+  SKUID_IDENTIFIER               = DEFAULT
+  PEI_ARCH                       = IA32
+  DXE_ARCH                       = X64
+
+#
+# This package always builds the feature.
+#
+!include Include/VirtualKeyboardFeature.dsc
-- 
2.24.0.windows.2


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Re: [edk2-devel] [PATCH v3] Features/Intel/UserInterface: Add VirtualKeyboardFeaturePkg
Posted by Dong, Eric 3 years, 10 months ago
Reviewed-by: Eric Dong <eric.dong@intel.com>

> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Tan,
> Ming
> Sent: Friday, May 8, 2020 8:51 AM
> To: devel@edk2.groups.io
> Subject: [edk2-devel] [PATCH v3] Features/Intel/UserInterface: Add
> VirtualKeyboardFeaturePkg
> 
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2603
> 
> It add a VirtualKeyboardDxe driver.
> It is used with a touch panel, simulate a keyboard in the screen.
> 
> Signed-off-by: Ming Tan <ming.tan@intel.com>
> ---
>  .../Include/PostMemory.fdf                    |   10 +
>  .../Include/PreMemory.fdf                     |    8 +
>  .../Include/VirtualKeyboardFeature.dsc        |   96 ++
>  .../VirtualKeyboardFeaturePkg/Readme.md       |   68 +
>  .../CapitalLetterKeyboard.bmp                 |  Bin 0 -> 330454 bytes
>  .../VirtualKeyboardDxe/ComponentName.c        |  159 ++
>  .../VirtualKeyboardDxe/ComponentName.h        |   95 ++
>  .../VirtualKeyboardDxe/DigitKeyboard.bmp      |  Bin 0 -> 330454 bytes
>  .../VirtualKeyboardDxe/FullIcon.bmp           |  Bin 0 -> 5454 bytes
>  .../VirtualKeyboardDxe/Keyboard.c             | 1411 ++++++++++++++++
>  .../VirtualKeyboardDxe/KeyboardLayout.c       | 1438 +++++++++++++++++
>  .../VirtualKeyboardDxe/KeyboardLayout.idf     |   12 +
>  .../VirtualKeyboardDxe/SimpleIcon.bmp         |  Bin 0 -> 2814 bytes
>  .../VirtualKeyboardDxe/SimpleKeyboard.bmp     |  Bin 0 -> 30054 bytes
>  .../VirtualKeyboardDxe/VirtualKeyboard.h      |  829 ++++++++++
>  .../VirtualKeyboardDriver.c                   |  515 ++++++
>  .../VirtualKeyboardDxe/VirtualKeyboardDxe.inf |   78 +
>  .../VirtualKeyboardFeaturePkg.dec             |   26 +
>  .../VirtualKeyboardFeaturePkg.dsc             |   30 +
>  19 files changed, 4775 insertions(+)
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/PostMe
> mory.fdf
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/PreMem
> ory.fdf
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/VirtualKe
> yboardFeature.dsc
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Readme.md
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardD
> xe/CapitalLetterKeyboard.bmp
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardD
> xe/ComponentName.c
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardD
> xe/ComponentName.h
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardD
> xe/DigitKeyboard.bmp
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardD
> xe/FullIcon.bmp
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardD
> xe/Keyboard.c
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardD
> xe/KeyboardLayout.c
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardD
> xe/KeyboardLayout.idf
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardD
> xe/SimpleIcon.bmp
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardD
> xe/SimpleKeyboard.bmp
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardD
> xe/VirtualKeyboard.h
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardD
> xe/VirtualKeyboardDriver.c
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardD
> xe/VirtualKeyboardDxe.inf
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardF
> eaturePkg.dec
>  create mode 100644
> Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardF
> eaturePkg.dsc
> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/PostM
> emory.fdf
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/PostM
> emory.fdf
> new file mode 100644
> index 0000000000..bf4a4d5078
> --- /dev/null
> +++
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/PostM
> emory.fdf
> @@ -0,0 +1,10 @@
> +## @file
> 
> +#  FDF file for post-memory modules that enable Virtual Keyboard.
> 
> +#
> 
> +# Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
> 
> +#
> 
> +# SPDX-License-Identifier: BSD-2-Clause-Patent
> 
> +#
> 
> +##
> 
> +
> 
> +  INF
> UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyb
> oardDxe.inf
> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/PreMe
> mory.fdf
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/PreMe
> mory.fdf
> new file mode 100644
> index 0000000000..c39a057f94
> --- /dev/null
> +++
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/PreMe
> mory.fdf
> @@ -0,0 +1,8 @@
> +## @file
> 
> +#  FDF file for pre-memory modules that enable Virtual Keyboard.
> 
> +#
> 
> +# Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
> 
> +#
> 
> +# SPDX-License-Identifier: BSD-2-Clause-Patent
> 
> +#
> 
> +##
> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/Virtual
> KeyboardFeature.dsc
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/Virtual
> KeyboardFeature.dsc
> new file mode 100644
> index 0000000000..c10fb2d567
> --- /dev/null
> +++
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Include/Virtual
> KeyboardFeature.dsc
> @@ -0,0 +1,96 @@
> +## @file
> 
> +# This is a build description file for the Virtual Keyboard feature.
> 
> +# This file should be included into another package DSC file to build this
> feature.
> 
> +#
> 
> +# The DEC files are used by the utilities that parse DSC and
> 
> +# INF files to generate AutoGen.c and AutoGen.h files
> 
> +# for the build infrastructure.
> 
> +#
> 
> +# Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
> 
> +#
> 
> +# SPDX-License-Identifier: BSD-2-Clause-Patent
> 
> +#
> 
> +##
> 
> +
> 
> +#########################################################
> #######################
> 
> +#
> 
> +# Defines Section - statements that will be processed to create a Makefile.
> 
> +#
> 
> +#########################################################
> #######################
> 
> +[Defines]
> 
> +!ifndef $(PEI_ARCH)
> 
> +  !error "PEI_ARCH must be specified to build this feature!"
> 
> +!endif
> 
> +!ifndef $(DXE_ARCH)
> 
> +  !error "DXE_ARCH must be specified to build this feature!"
> 
> +!endif
> 
> +
> 
> +#########################################################
> #######################
> 
> +#
> 
> +# Library Class section - list of all Library Classes needed by this feature.
> 
> +#
> 
> +#########################################################
> #######################
> 
> +[LibraryClasses]
> 
> +  #######################################
> 
> +  # Edk2 Packages
> 
> +  #######################################
> 
> +  BaseLib|MdePkg/Library/BaseLib/BaseLib.inf
> 
> +  BaseMemoryLib|MdePkg/Library/BaseMemoryLib/BaseMemoryLib.inf
> 
> +  DebugLib|MdePkg/Library/BaseDebugLibNull/BaseDebugLibNull.inf
> 
> +
> UefiBootServicesTableLib|MdePkg/Library/UefiBootServicesTableLib/UefiBo
> otServicesTableLib.inf
> 
> +
> UefiDriverEntryPoint|MdePkg/Library/UefiDriverEntryPoint/UefiDriverEntry
> Point.inf
> 
> +  UefiLib|MdePkg/Library/UefiLib/UefiLib.inf
> 
> +  PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
> 
> +  HiiLib|MdeModulePkg/Library/UefiHiiLib/UefiHiiLib.inf
> 
> +  DevicePathLib|MdePkg/Library/UefiDevicePathLib/UefiDevicePathLib.inf
> 
> +  PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
> 
> +
> UefiHiiServicesLib|MdeModulePkg/Library/UefiHiiServicesLib/UefiHiiService
> sLib.inf
> 
> +
> UefiRuntimeServicesTableLib|MdePkg/Library/UefiRuntimeServicesTableLib
> /UefiRuntimeServicesTableLib.inf
> 
> +
> 
> +[LibraryClasses.common.UEFI_DRIVER]
> 
> +  #######################################
> 
> +  # Edk2 Packages
> 
> +  #######################################
> 
> +
> MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemo
> ryAllocationLib.inf
> 
> +
> 
> +#########################################################
> ##########################################
> 
> +#
> 
> +# Components Section - list of the modules and components that will be
> processed by compilation
> 
> +#                      tools and the EDK II tools to generate PE32/PE32+/Coff image
> files.
> 
> +#
> 
> +# Note: The EDK II DSC file is not used to specify how compiled binary
> images get placed
> 
> +#       into firmware volume images. This section is just a list of modules to
> compile from
> 
> +#       source into UEFI-compliant binaries.
> 
> +#       It is the FDF file that contains information on combining binary files into
> firmware
> 
> +#       volume images, whose concept is beyond UEFI and is described in PI
> specification.
> 
> +#       Binary modules do not need to be listed in this section, as they should
> be
> 
> +#       specified in the FDF file. For example: Shell binary (Shell_Full.efi), FAT
> binary (Fat.efi),
> 
> +#       Logo (Logo.bmp), and etc.
> 
> +#       There may also be modules listed in this section that are not required
> in the FDF file,
> 
> +#       When a module listed here is excluded from FDF file, then UEFI-
> compliant binary will be
> 
> +#       generated for it, but the binary will not be put into any firmware
> volume.
> 
> +#
> 
> +#########################################################
> ##########################################
> 
> +#
> 
> +# Feature DXE Components
> 
> +#
> 
> +[Components.X64]
> 
> +  #####################################
> 
> +  # Virtual Keyboard Feature Package
> 
> +  #####################################
> 
> +
> UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboardDxe/VirtualKeyb
> oardDxe.inf
> 
> +
> 
> +#########################################################
> ##########################################
> 
> +#
> 
> +# BuildOptions Section - Define the module specific tool chain flags that
> should be used as
> 
> +#                        the default flags for a module. These flags are appended to
> any
> 
> +#                        standard flags that are defined by the build process. They can
> be
> 
> +#                        applied for any modules or only those modules with the
> specific
> 
> +#                        module style (EDK or EDKII) specified in [Components] section.
> 
> +#
> 
> +#                        For advanced features, it is recommended to enable
> [BuildOptions] in
> 
> +#                        the applicable INF file so it does not affect the whole board
> package
> 
> +#                        build when this DSC file is active.
> 
> +#
> 
> +#########################################################
> ##########################################
> 
> +[BuildOptions]
> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Readme.md
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Readme.md
> new file mode 100644
> index 0000000000..ae7f778748
> --- /dev/null
> +++
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/Readme.md
> @@ -0,0 +1,68 @@
> +# Overview
> 
> +* **Feature Name:** Virtual Keyboard
> 
> +* **PI Phase(s) Supported:** DXE
> 
> +* **SMM Required?** No
> 
> +
> 
> +## Purpose
> 
> +This feature provides a DXE virtual keyboard driver, used with a touch panel.
> 
> +
> 
> +# High-Level Theory of Operation
> 
> +This driver will use the following protocol:
> 
> +  gEfiAbsolutePointerProtocolGuid
> 
> +  gEfiGraphicsOutputProtocolGuid
> 
> +  gEdkiiTouchPanelGuid
> 
> +
> 
> +It will show a picture like a keyboard in the graphic output, then detect
> 
> +position when user touch the touch panel, then calculate the key which the
> 
> +user want to type.
> 
> +Touch panel driver use gEdkiiTouchPanelGuid to indicate the touch panel is
> ready for support virtual keyboard.
> 
> +
> 
> +## Firmware Volumes
> 
> +FvAdvancedUncompact
> 
> +FvAdvanced
> 
> +
> 
> +## Modules
> 
> +VirtualKeyboardDxe: The main driver of virtual keyboard.
> 
> +
> 
> +## VirtualKeyboardDxe
> 
> +This driver support the virtual keyboard feature.
> 
> +
> 
> +## Key Functions
> 
> +* Show a small icon in the corner to show/hide a keyboard picture in the
> screen.
> 
> +* If the user press the button in the picture, then convert it to the keyboard
> input.
> 
> +* Support general simple keyboard input.
> 
> +
> 
> +## Configuration
> 
> +There is not PCD or EFI variable used to config this feature.
> 
> +Platform maybe use its own solution to load/unload this driver.
> 
> +
> 
> +## Data Flows
> 
> +User touch the touch panel -> absolute pointer and status -> virtual
> keyboard event -> user keyboard input.
> 
> +
> 
> +## Control Flows
> 
> +This driver use AbsolutePointer protocol to get the info of user input, and
> use GraphicsOutput protocol to show the picture.
> 
> +
> 
> +## Build Flows
> 
> +There is not special build flow.
> 
> +
> 
> +## Test Point Results
> 
> +Test this driver in a device with touch panel and the BIOS support touch
> panel driver.
> 
> +If there is not touch panel, then can modify a mouse driver to support
> absolute pointer protocol to verify this driver.
> 
> +
> 
> +## Functional Exit Criteria
> 
> +* If the touch panel driver is not ready, then will not start this driver.
> 
> +* Show small icon in the corner of the screen.
> 
> +* Touch the icon, can show/hide the keyboard layout picture in the screen.
> 
> +* Touch the key in the keyboardy layout picture, can input the correct key.
> 
> +
> 
> +## Feature Enabling Checklist
> 
> +Make sure the following protocols are supported:
> 
> +  gEfiAbsolutePointerProtocolGuid
> 
> +  gEfiGraphicsOutputProtocolGuid
> 
> +  gEdkiiTouchPanelGuid
> 
> +
> 
> +## Performance Impact
> 
> +* VirtualKeyboardDxe.efi: debug version size: 734KB before compress,
> release version size: 698KB before compress.
> 
> +
> 
> +## Common Optimizations
> 
> +* The picture use bmp format, cost 684KB total. Use JPEG or other format
> can save the efi size before compress.
> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/CapitalLetterKeyboard.bmp
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/CapitalLetterKeyboard.bmp
> new file mode 100644
> index
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> ram
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> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/ComponentName.c
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/ComponentName.c
> new file mode 100644
> index 0000000000..6ac28ab90b
> --- /dev/null
> +++
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/ComponentName.c
> @@ -0,0 +1,159 @@
> +/** @file
> 
> +  Virtual Keyboard driver name.
> 
> +
> 
> +  Copyright (c) 2012 - 2020, Intel Corporation. All rights reserved.<BR>
> 
> +  SPDX-License-Identifier: BSD-2-Clause-Patent
> 
> +
> 
> +**/
> 
> +
> 
> +#include "VirtualKeyboard.h"
> 
> +
> 
> +//
> 
> +// EFI Component Name Protocol
> 
> +//
> 
> +GLOBAL_REMOVE_IF_UNREFERENCED
> EFI_COMPONENT_NAME_PROTOCOL gVirtualKeyboardComponentName = {
> 
> +  VirtualKeyboardComponentNameGetDriverName,
> 
> +  VirtualKeyboardComponentNameGetControllerName,
> 
> +  "eng"
> 
> +};
> 
> +
> 
> +//
> 
> +// EFI Component Name 2 Protocol
> 
> +//
> 
> +GLOBAL_REMOVE_IF_UNREFERENCED
> EFI_COMPONENT_NAME2_PROTOCOL gVirtualKeyboardComponentName2
> = {
> 
> +  (EFI_COMPONENT_NAME2_GET_DRIVER_NAME)
> VirtualKeyboardComponentNameGetDriverName,
> 
> +  (EFI_COMPONENT_NAME2_GET_CONTROLLER_NAME)
> VirtualKeyboardComponentNameGetControllerName,
> 
> +  "en"
> 
> +};
> 
> +
> 
> +//
> 
> +// Table of driver names
> 
> +//
> 
> +GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE
> mVirtualKeyboardDriverNameTable[] = {
> 
> +  {
> 
> +    "eng;en",
> 
> +    L"UEFI Virtual Keyboard Driver"
> 
> +  },
> 
> +  {
> 
> +    NULL,
> 
> +    NULL
> 
> +  }
> 
> +};
> 
> +
> 
> +//
> 
> +// Controller name string table
> 
> +//
> 
> +GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE
> mVirtualKeyboardControllerNameStringTable[] = {
> 
> +  {
> 
> +    "eng",
> 
> +    L"UEFI Virtual Keyboard Driver"
> 
> +  },
> 
> +  {
> 
> +    NULL,
> 
> +    NULL
> 
> +  }
> 
> +};
> 
> +
> 
> +/**
> 
> +  Retrieves a Unicode string that is the user-readable name of the EFI Driver.
> 
> +
> 
> +  @param[in]  This              A pointer to the
> EFI_COMPONENT_NAME_PROTOCOL instance.
> 
> +  @param[in]  Language          A pointer to a three-character ISO 639-2
> language identifier.
> 
> +                                This is the language of the driver name that that the caller
> 
> +                                is requesting, and it must match one of the languages
> specified
> 
> +                                in SupportedLanguages.  The number of languages
> supported by a
> 
> +                                driver is up to the driver writer.
> 
> +  @param[out] DriverName        A pointer to the Unicode string to return.
> This Unicode string
> 
> +                                is the name of the driver specified by This in the language
> 
> +                                specified by Language.
> 
> +
> 
> +  @retval EFI_SUCCESS           The Unicode string for the Driver specified by
> This
> 
> +                                and the language specified by Language was returned
> 
> +                                in DriverName.
> 
> +  @retval EFI_INVALID_PARAMETER Language is NULL.
> 
> +  @retval EFI_INVALID_PARAMETER DriverName is NULL.
> 
> +  @retval EFI_UNSUPPORTED       The driver specified by This does not
> support the
> 
> +                                language specified by Language.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VirtualKeyboardComponentNameGetDriverName (
> 
> +  IN  EFI_COMPONENT_NAME_PROTOCOL *This,
> 
> +  IN  CHAR8                       *Language,
> 
> +  OUT CHAR16                      **DriverName
> 
> +  )
> 
> +{
> 
> +  return LookupUnicodeString2 (
> 
> +           Language,
> 
> +           This->SupportedLanguages,
> 
> +           mVirtualKeyboardDriverNameTable,
> 
> +           DriverName,
> 
> +           (BOOLEAN)(This == &gVirtualKeyboardComponentName)
> 
> +           );
> 
> +}
> 
> +
> 
> +/**
> 
> +  Retrieves a Unicode string that is the user readable name of the controller
> 
> +  that is being managed by an EFI Driver.
> 
> +
> 
> +  @param[in]  This              A pointer to the
> EFI_COMPONENT_NAME_PROTOCOL instance.
> 
> +  @param[in]  ControllerHandle  The handle of a controller that the driver
> specified by
> 
> +                                This is managing.  This handle specifies the controller
> 
> +                                whose name is to be returned.
> 
> +  @param[in]  ChildHandle       The handle of the child controller to retrieve
> the name
> 
> +                                of.  This is an optional parameter that may be NULL.  It
> 
> +                                will be NULL for device drivers.  It will also be NULL
> 
> +                                for a bus drivers that wish to retrieve the name of the
> 
> +                                bus controller.  It will not be NULL for a bus driver
> 
> +                                that wishes to retrieve the name of a child controller.
> 
> +  @param[in]  Language          A pointer to a three character ISO 639-2
> language
> 
> +                                identifier.  This is the language of the controller name
> 
> +                                that the caller is requesting, and it must match one
> 
> +                                of the languages specified in SupportedLanguages.  The
> 
> +                                number of languages supported by a driver is up to the
> 
> +                                driver writer.
> 
> +  @param[out] ControllerName    A pointer to the Unicode string to return.
> This Unicode
> 
> +                                string is the name of the controller specified by
> 
> +                                ControllerHandle and ChildHandle in the language specified
> 
> +                                by Language, from the point of view of the driver specified
> 
> +                                by This.
> 
> +
> 
> +  @retval EFI_SUCCESS           The Unicode string for the user-readable name
> in the
> 
> +                                language specified by Language for the driver
> 
> +                                specified by This was returned in DriverName.
> 
> +  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
> 
> +  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a
> valid EFI_HANDLE.
> 
> +  @retval EFI_INVALID_PARAMETER Language is NULL.
> 
> +  @retval EFI_INVALID_PARAMETER ControllerName is NULL.
> 
> +  @retval EFI_UNSUPPORTED       The driver specified by This is not currently
> managing
> 
> +                                the controller specified by ControllerHandle and
> 
> +                                ChildHandle.
> 
> +  @retval EFI_UNSUPPORTED       The driver specified by This does not
> support the
> 
> +                                language specified by Language.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VirtualKeyboardComponentNameGetControllerName (
> 
> +  IN  EFI_COMPONENT_NAME_PROTOCOL *This,
> 
> +  IN  EFI_HANDLE                  ControllerHandle,
> 
> +  IN  EFI_HANDLE                  ChildHandle, OPTIONAL
> 
> +  IN  CHAR8                       *Language,
> 
> +  OUT CHAR16                      **ControllerName
> 
> +  )
> 
> +{
> 
> +  //
> 
> +  // ChildHandle must be NULL for a Device Driver
> 
> +  //
> 
> +  if (ChildHandle != NULL) {
> 
> +    return EFI_UNSUPPORTED;
> 
> +  }
> 
> +  return LookupUnicodeString2 (
> 
> +           Language,
> 
> +           This->SupportedLanguages,
> 
> +           mVirtualKeyboardControllerNameStringTable,
> 
> +           ControllerName,
> 
> +           (BOOLEAN)(This == &gVirtualKeyboardComponentName)
> 
> +           );
> 
> +}
> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/ComponentName.h
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/ComponentName.h
> new file mode 100644
> index 0000000000..327ce9f9cb
> --- /dev/null
> +++
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/ComponentName.h
> @@ -0,0 +1,95 @@
> +/** @file
> 
> +  Header file for Virtual Keyboard driver name.
> 
> +
> 
> +  Copyright (c) 2012 - 2020, Intel Corporation. All rights reserved.<BR>
> 
> +  SPDX-License-Identifier: BSD-2-Clause-Patent
> 
> +
> 
> +**/
> 
> +
> 
> +#ifndef _VIRTUAL_KEYBOARD_COMPONENT_NAME_H_
> 
> +#define _VIRTUAL_KEYBOARD_COMPONENT_NAME_H_
> 
> +
> 
> +#include <Uefi.h>
> 
> +#include <Protocol/ComponentName.h>
> 
> +#include <Protocol/ComponentName2.h>
> 
> +
> 
> +/**
> 
> +  Retrieves a Unicode string that is the user-readable name of the EFI Driver.
> 
> +
> 
> +  @param[in]  This              A pointer to the
> EFI_COMPONENT_NAME_PROTOCOL instance.
> 
> +  @param[in]  Language          A pointer to a three-character ISO 639-2
> language identifier.
> 
> +                                This is the language of the driver name that that the caller
> 
> +                                is requesting, and it must match one of the languages
> specified
> 
> +                                in SupportedLanguages.  The number of languages
> supported by a
> 
> +                                driver is up to the driver writer.
> 
> +  @param[out] DriverName        A pointer to the Unicode string to return.
> This Unicode string
> 
> +                                is the name of the driver specified by This in the language
> 
> +                                specified by Language.
> 
> +
> 
> +  @retval EFI_SUCCESS           The Unicode string for the Driver specified by
> This
> 
> +                                and the language specified by Language was returned
> 
> +                                in DriverName.
> 
> +  @retval EFI_INVALID_PARAMETER Language is NULL.
> 
> +  @retval EFI_INVALID_PARAMETER DriverName is NULL.
> 
> +  @retval EFI_UNSUPPORTED       The driver specified by This does not
> support the
> 
> +                                language specified by Language.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VirtualKeyboardComponentNameGetDriverName (
> 
> +  IN  EFI_COMPONENT_NAME_PROTOCOL *This,
> 
> +  IN  CHAR8                       *Language,
> 
> +  OUT CHAR16                      **DriverName
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Retrieves a Unicode string that is the user readable name of the controller
> 
> +  that is being managed by an EFI Driver.
> 
> +
> 
> +  @param[in]  This              A pointer to the
> EFI_COMPONENT_NAME_PROTOCOL instance.
> 
> +  @param[in]  ControllerHandle  The handle of a controller that the driver
> specified by
> 
> +                                This is managing.  This handle specifies the controller
> 
> +                                whose name is to be returned.
> 
> +  @param[in]  ChildHandle       The handle of the child controller to retrieve
> the name
> 
> +                                of.  This is an optional parameter that may be NULL.  It
> 
> +                                will be NULL for device drivers.  It will also be NULL
> 
> +                                for a bus drivers that wish to retrieve the name of the
> 
> +                                bus controller.  It will not be NULL for a bus driver
> 
> +                                that wishes to retrieve the name of a child controller.
> 
> +  @param[in]  Language          A pointer to a three character ISO 639-2
> language
> 
> +                                identifier.  This is the language of the controller name
> 
> +                                that the caller is requesting, and it must match one
> 
> +                                of the languages specified in SupportedLanguages.  The
> 
> +                                number of languages supported by a driver is up to the
> 
> +                                driver writer.
> 
> +  @param[out] ControllerName    A pointer to the Unicode string to return.
> This Unicode
> 
> +                                string is the name of the controller specified by
> 
> +                                ControllerHandle and ChildHandle in the language specified
> 
> +                                by Language, from the point of view of the driver specified
> 
> +                                by This.
> 
> +
> 
> +  @retval EFI_SUCCESS           The Unicode string for the user-readable name
> in the
> 
> +                                language specified by Language for the driver
> 
> +                                specified by This was returned in DriverName.
> 
> +  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
> 
> +  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a
> valid EFI_HANDLE.
> 
> +  @retval EFI_INVALID_PARAMETER Language is NULL.
> 
> +  @retval EFI_INVALID_PARAMETER ControllerName is NULL.
> 
> +  @retval EFI_UNSUPPORTED       The driver specified by This is not currently
> managing
> 
> +                                the controller specified by ControllerHandle and
> 
> +                                ChildHandle.
> 
> +  @retval EFI_UNSUPPORTED       The driver specified by This does not
> support the
> 
> +                                language specified by Language.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VirtualKeyboardComponentNameGetControllerName (
> 
> +  IN  EFI_COMPONENT_NAME_PROTOCOL *This,
> 
> +  IN  EFI_HANDLE                  ControllerHandle,
> 
> +  IN  EFI_HANDLE                  ChildHandle, OPTIONAL
> 
> +  IN  CHAR8                       *Language,
> 
> +  OUT CHAR16                      **ControllerName
> 
> +  );
> 
> +#endif
> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/DigitKeyboard.bmp
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/DigitKeyboard.bmp
> new file mode 100644
> index
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> zPYGZPTG($vLVp#N(^o_x&44amCCF};b*7TdE-
> KC23TeeWFlTN^W0nYeJF0cbLGe%p
> zNmSCIfK{_Ut_*IJ!YtmTu*r`bZkw3>N^6cnuXST#X=urAA9N#2`YnSiP|0RX$fJS
> <
> z-Q;n%Y5%o0XmueiB(}dqRW*gqWH?uc+Zi)*iK-
> kWidr|yRU~C+X}Q%?MO7NC_6Y4F
> z57JaMQ3+%fm9A1yJY#nKDFPa|H}2I$<xC};T~vb9+W3ljWXBWK9FPn`<fc|oSy
> WZJ
> zs@_*;)s^H*IuckGa20|&1A*Xw`O9DO-
> #rOPqvhBv=Dqfsvtlobezy<0@h*K?aDp~O
> z9+hmigghz)rZNEmDAMzIu%Z?c+h3w`RH(V7=3qtq*r@}#L{%!=$7>spI#?s%l~
> cH$
> zDk||43vwtn`qEq#W2>S9^6weH{f~SHqSP<IiuNjv(syjc%@!(+(xk1B?xug?rvRK
> Z
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> #8+
> zN?Re1ryAWERBl~rDsL@KnX&+(1W@fsa%B_17E}P1p{t6@t}d2^wsmLU8XjY-
> q5`Xo
> zBHEPis#QhN9s{d-s@2&-
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> zt!CAgM5To|0sK$_g1cm!1SbEwrqzV36zckI6O$%tj$5A+RqLE+X9#5HH`}y6v@v
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> z`dA%5qDYbN1eZ1fgfQr4am^~Kz+ibv`79q-FcJf+q5^V^5&-
> Q%kYlrfV=wlsV<T?1
> zP-zt4i4CB#$-
> $z{2Rsvn>{o>VmFRLAK=Gq=>Nph1fq<3L<5gD@RWKZvFe%j_I86a|
> z?jvC9ZViMHe$-P6m~LUsxik9Rf2-
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> zYw};h5l)Lrou#0fW06=n!y9((=bwL$e}@P5VNh~8T@n=rS|%NPEutJDXfnE0D7
> db&
> z@|37bQ|xi3EK!uJ*qGI{8!Rn)nTkByOC>6M)lmd^0XF4~*1BxJo5eM&s5IQ=?~
> )(e
> zQ{_sgoKQ_v!d6AKh@!xK7Kvue2rX0^%ODRNM^s7oA;13m*T3dA)D)!<pt76J
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> z$%}3oz@gw(T}f1y>Z**{p(zYQgz7}>#9WD*LtT6KKwO#J=_Vgob6`34VQc>Z!
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> zt##RcH;ZdlQE7M;K$R$Vst(Hn1Q(FZxLE9p`dm^Jc(CO=i_NhSH>+IPA%Yj6s#0
> Vj
> zNk)V-)a?|d9H0^&+I07N){jdI4h%9jFc7n}P-!iJU||fAgSo&}y5?9j^k+VO+Od*L
> zlGI~;=$xkE65M_QXE89uk%CTv3BTFRO$Fe=ue|;Ar#~eyi%L+d0<o3xrFjKD5H
> Os%
> z6H^d#b*?-
> r$E4*glN$&XSqc@KiJUbDs6b;kySG*<7qo&sz=kF8_Cd^$bJk}oQ=!Y1
> zqo{>>X}{oAg(@mdVZ*XTk?k*IOpewi9^hSka@Po96&0>lDJnt6dr+%`z!|a8z
> W(}a
> zdxIb(R%oHJIzm{YT6D9(;o5_C3MU7s1ja5I8^^jVh;TcqDs$`M4%$INlc=hr%1(=
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> NP<
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> _ge%rK9#=I~eK;ZXUg%heEy
> z$^{BQRj8sWjjZk=CpO*MWURPyOjc0=|8R=P31)X8l;_H6jzY*<Eq>fAw%OteI-
> |g}
> zykBlT0VAr`z;pEj)yZoPf{RCcaZ?J`hhv?lJ7ZAJy+|-<!h0z22r+sCS8ciiNQ<h(
> zY<sr*vvv1h?#n!?Axzq3vgX*QZMs^b+RjPK0$|8f@+pv5nZQa^0!(2DMZigB1e
> jn1
> z(oI@LrLo%u@}R(mL3{FXVAQOl!qrg}ab2u_sE5DvJHPYA7hnALZ~r#_sjwi;w@
> ?Z8
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> >Ac<x1H
> z0y=@=Z_l~w-
> XQ?&AzlR@y*d!QMi9iiV|WOY)+Su}v!DG8Z(Em9U!oeqNy`XIG|x7}
> zzt3sS828&SgQojp&~ga5<O-
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> zp@=I*Ea?bM+0CV9$rUawr3=V|4;jP0gAQ{%AGKkkrEvudOR>fJ<N*|w{t`tJs$
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> zz|dn{CZi1SU<3w{z4YA$niiF&s|uq?!$uTW2(Ie=UmjJ=j4(qj_;9_<Tgdu6U6dr0
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> 3^;FbwH=AVskI`+SoNk4Qxlae97F)B
> zUd<8H8zIvUAAPh)(p=VuEwUXRjg9pgN4f#k@tM|mm5<k8&^;2ds5D(maPaa
> ?;D=3w
> z67S>PPn#_`bsiNgXFjbJsh>##dlACvYmRl9WMTuJYFQTYE?3|u<0;V?EAx26pTb
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> zo;Mh1J*b)koPYYKe`-gSs6_ZifoT%84uQwVX!cGNNupH-
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> f`3o+}`Y
> z9$aU6zfnLnqUM0t?uVYYQ6I#@@OTG2u?R=uHv#PLgd$P#Y=dWO|M-
> vph%d#N#*knC
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> PZ_CjH+65PzT%rqeLbCHwyM_gOmVg*{Km=`t_lb)e@D{v2haM
> z)Tpk0_mBfqT~wNGqd>Y;qTMSp&iKhtao+9O-QgeAL~;;gEt>&X-
> 3ST7ta~ZOMpRuR
> zCsqKe%{8axhiX4-PWgbyDF;4un(LaSuW;Lk;|+l+Z($$k7eX=7-l(c;0aV?%TUpAd
> zN2QY?@0ICOoA`I-
> $`!pbmf*G47du_9k{LqeFV)vTD|As=<t;L6jywhTNiNNv3{^RG
> z&~tiJ3~%khDz*SsGD21)e%#LJTYv!73d_3=0avH3IZPNl-
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> zjBy%N4gi}rF<4p3dvm3UtiT6c{3@W#`q11J6{Co=SCavVa^Fr6{H~}hKa1p(p|ZP
> =
> z@~k--Pj$;q;K7}04kDZd2lb(~1ftrtfUGbMRHv;uEqYvk;6tamy4fu|I8?YDc>+}B
> za_n6@GJSc>KMN}2MBrCbKCYe-
> Rmq`xCMsL5%UBXo(}R`@%GIX~ycERM9yJG#m-TP9
> z!F~zVqFPZFb{zt)?rY6~TeSaN;^a-
> dD>%>(BCF;06ZB71d6FkrldC)fdCefM_NY0w
> zCIldf$|@g02CCbd^Y+_s2iQ-
> 131G<9X;7*1@L3IhRv*ip7*&$<i7H7H)FxMxt2_gF
> z%{Z>M*Bn>~J}sO=_3+`tBa|9q0GPX)^X%EP7WUKk0}N}<MAapKa@D0s3X>
> ~Q(G@0F
> zU5cb|aIT&{eR`al12A_r2mb|gD2*cWECK+?fhs!_Rn-
> @ht12zk&dF7kmTKqZs!B_>
> l^HR7%ra${>2LM=bOwD1ApFbx9lYz;=WMDF|9|Jcx{~rV^Pj3JK
> 
> literal 0
> HcmV?d00001
> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/FullIcon.bmp
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/FullIcon.bmp
> new file mode 100644
> index
> 0000000000000000000000000000000000000000..b940505c8bc74ad6550bc3226
> 29d7975c1e1c1fc
> GIT binary patch
> literal 5454
> zcmdUyTS!(}6o56!L@l#1k<1H~<*msK=EYIGfJHUFgo!=$AR-
> O~g3Ln$_Tv5C7@{FW
> zuaziT6L~3b87f|a5!5uTbW}2D5<@ff*ZKTcvp6&*5#z(Z`TxV--
> &uR@b@o|%t#u-Q
> zirH&rZa;AK<^LmpPyW_cZd|Rb+&<nn4?bRUiz^!H>wdS8R##V7QBl$K<d1cW
> YA;{D
> ztZVAFD3jL*2L~Hl`%J6LZf@c|8xF%GjEsyJ{RdKAU2P;=(N9lLXQANWU{&7M)&
> |ib
> zoyp0`=g*%vw)L&AuN^pWKyM*7F)?9hXD7tQ#s+ft?p+nwqR!Q;S6L`LJY4m6b
> #+0u
> zZ{MzDW@ct|bX06Ubm)+BvDx0<UI<el_wL<Ofi3EY%@Gk1s$XojwY3#uZEbD
> oHhXz_
> z>C>^R<KyGTHv*}xtyO_7>J%0hvQTJfsOs<N=zy@jN?yNyjc+ux_O7p)LPA3J?c
> 3++
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> z75
> zz4!0mk1<@|ym`YJtZUwgb&HFO@87>)T3UMd?j1wg!omWC#w~`ctE&(Mwy
> 2?ed3l+I
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> @sNRc
> zcW<~^OiawqojboXH;fq@8{?$x*|P_=etv!kG&D5G6vWP+JqzLViCT`^qeqV*i
> HV8G
> zh&^&eA4+&A%_;b~o=rNWMV^-
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> zNJ2uwkt0Vq#Wcdgt5>f$-
> ~j;vsKsp%XlZF7Pca3tix)3K%FD}{&f+AF_V#v2YHBJn
> zVvk(Wh7v*tHK#?!XA7+P>zg-
> nI@L&PYb!N2hngXN$Qy*v=s<WW#8m`{MMOvlbrik_
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> KA$
> zoHY0B*)!^AlWB#7qOQ(FtkNMJh%w5gq@+M{b8}UOyAX1R5<(?JhoWR^YD
> &q;lP3|V
> zsi{#S-zoUH5={L>3EwH-R`XxEas^eTrKPI;{{8!qpr9ZnQr?h2l^{Sy(4iz&W2}~%
> zKQb~>Wu)fU@V-
> fWMmgVBn|!By$>w9nj_Gn@Gx=A^SK4e$N&n+_%GcZc4g36Gn?JkH
> z)JPOL#tkth0ytY#RaK<|1W!moL4gwPLX1VrXZ?A4dRnJQF<|^OCWE8o`0?W^
> Be7bC
> zbT|?CbA8K3+_-V$2JTc+Qj(LC!;lK|w}0EUYu6y0N^a55&(G)JL-
> >fu%gckXmPC@9
> zH*Xdf7emNv;v1p^wPFv|JGT&^kmF+wC2USsRu+U4EuL`e)~%wVA_yD{kzt4
> )l+dAo
> p86F<C#GKOBxe+HVs7?Mk@$)bFIfd8L^U5+T;g?l#J@wbDe*hRVpnL!T
> 
> literal 0
> HcmV?d00001
> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/Keyboard.c
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/Keyboard.c
> new file mode 100644
> index 0000000000..84c3a06f68
> --- /dev/null
> +++
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/Keyboard.c
> @@ -0,0 +1,1411 @@
> +/** @file
> 
> +  Virtural Keyboard Control Engine
> 
> +
> 
> +  Copyright (c) 2012 - 2020, Intel Corporation. All rights reserved.<BR>
> 
> +  SPDX-License-Identifier: BSD-2-Clause-Patent
> 
> +
> 
> +**/
> 
> +
> 
> +#include "VirtualKeyboard.h"
> 
> +
> 
> +/**
> 
> +  Notify all keyboards pressed specific key need to hidden Virtual
> 
> +  Keyboard.
> 
> +
> 
> +  @param[in] KeyData          Keyboard pressed specific key data
> 
> +
> 
> +  @retval EFI_SUCCESS         Success for the function.
> 
> +  @retval EFI_NOT_FOUND       Not found Virtual Keyboard protocol.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VkNotifyKeyCallback (
> 
> +  IN EFI_KEY_DATA *KeyData
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS Status;
> 
> +  VK_CONTEXT *VkContext;
> 
> +  UINTN      MaxColumn;
> 
> +  UINTN      MaxRow;
> 
> +  UINT32     HorizontalPixel;
> 
> +  UINT32     VerticalPixel;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkNotifyKeyCallback
> Start\n"));
> 
> +
> 
> +  Status = gBS->LocateProtocol (&gEfiCallerIdGuid, NULL, (VOID **)
> &VkContext);
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    return Status;
> 
> +  }
> 
> +
> 
> +  gST->ConOut->QueryMode (
> 
> +                 gST->ConOut,
> 
> +                 gST->ConOut->Mode->Mode,
> 
> +                 &MaxColumn,
> 
> +                 &MaxRow
> 
> +                 );
> 
> +  HorizontalPixel = VkContext->GraphicsOutput->Mode->Info-
> >HorizontalResolution;
> 
> +  VerticalPixel   = VkContext->GraphicsOutput->Mode->Info-
> >VerticalResolution;
> 
> +
> 
> +  //
> 
> +  // CursorRow and CursorColumn are started from 0, so need to add 2 not 1.
> 
> +  //
> 
> +  if (((UINTN)(gST->ConOut->Mode->CursorColumn * EFI_GLYPH_WIDTH) <
> VkContext->SimIconBackWidth) &&
> 
> +      ((UINTN)((gST->ConOut->Mode->CursorRow + 2) *
> EFI_GLYPH_HEIGHT) > (VerticalPixel - VkContext->SimIconBackHeight))) {
> 
> +    SaveVkIconBackgroundBltBuffer (VkContext,
> VkDisplayAttributeSimpleBottom);
> 
> +  } else if (((UINTN)((gST->ConOut->Mode->CursorColumn + 2) *
> EFI_GLYPH_WIDTH) > (HorizontalPixel - VkContext->FullIconBackWidth)) &&
> 
> +             ((UINTN)((gST->ConOut->Mode->CursorRow + 2) *
> EFI_GLYPH_HEIGHT) > (VerticalPixel - VkContext->FullIconBackHeight))){
> 
> +    SaveVkIconBackgroundBltBuffer (VkContext,
> VkDisplayAttributeFullBottom);
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Hide icon/keyboard to prevent screen scroll up.
> 
> +  //
> 
> +  if ((KeyData->Key.UnicodeChar         == CHAR_CARRIAGE_RETURN)    ||
> 
> +      (KeyData->Key.ScanCode            == SCAN_ESC)                ||
> 
> +      ((gST->ConOut->Mode->CursorColumn >= (INT32) (MaxColumn - 2)) &&
> 
> +       (gST->ConOut->Mode->CursorRow    == (INT32) (MaxRow - 1)))) {
> 
> +    HideVkBody (VkContext);
> 
> +    HideVkIcon (VkContext);
> 
> +    VkContext->IconReDrawCheck = 0;
> 
> +  }
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkNotifyKeyCallback
> End\n"));
> 
> +  return EFI_SUCCESS;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Judge whether is a registed key.
> 
> +
> 
> +  @param[in] RegsiteredData   A pointer to a buffer that is filled in with the
> keystroke
> 
> +                              state data for the key that was registered.
> 
> +  @param[in] InputData        A pointer to a buffer that is filled in with the
> keystroke
> 
> +                              state data for the key that was pressed.
> 
> +
> 
> +  @retval TRUE                Key be pressed matches a registered key.
> 
> +  @retval FLASE               Match failed.
> 
> +
> 
> +**/
> 
> +BOOLEAN
> 
> +IsKeyRegistered (
> 
> +  IN EFI_KEY_DATA  *RegsiteredData,
> 
> +  IN EFI_KEY_DATA  *InputData
> 
> +  )
> 
> +{
> 
> +  ASSERT (RegsiteredData != NULL && InputData != NULL);
> 
> +
> 
> +  if ((RegsiteredData->Key.ScanCode    != InputData->Key.ScanCode) ||
> 
> +      (RegsiteredData->Key.UnicodeChar != InputData->Key.UnicodeChar)) {
> 
> +    return FALSE;
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Assume KeyShiftState/KeyToggleState = 0 in Registered key data means
> these state could be ignored.
> 
> +  //
> 
> +  if (RegsiteredData->KeyState.KeyShiftState != 0 &&
> 
> +      RegsiteredData->KeyState.KeyShiftState != InputData-
> >KeyState.KeyShiftState) {
> 
> +    return FALSE;
> 
> +  }
> 
> +  if (RegsiteredData->KeyState.KeyToggleState != 0 &&
> 
> +      RegsiteredData->KeyState.KeyToggleState != InputData-
> >KeyState.KeyToggleState) {
> 
> +    return FALSE;
> 
> +  }
> 
> +
> 
> +  return TRUE;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Pop the key from the keybuffer.
> 
> +
> 
> +  @param[in, out] VkContext    Address of an VK_CONTEXT structure.
> 
> +  @param[out]     KeyData      The EFI stand key infomation when code get
> the key will put
> 
> +                               correct mapping key.
> 
> +
> 
> +  @retval EFI_SUCCESS          The keystroke information was returned.
> 
> +  @retval EFI_NOT_READY        The keystroke data is empty.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +VkPopTheKey (
> 
> +  IN OUT VK_CONTEXT   *VkContext,
> 
> +     OUT EFI_KEY_DATA *KeyData OPTIONAL
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS Status;
> 
> +  UINT8      IndexSt;
> 
> +  UINT8      IndexEd;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkPopTheKey Start\n"));
> 
> +  //
> 
> +  // KeyBuffer
> 
> +  // [         0          ]
> 
> +  // [         1          ]<-*IndexSt/IndexEd
> 
> +  // [         2          ]
> 
> +  // [        ...         ]
> 
> +  // [MAX_KEY_BUF_SIZE - 1]
> 
> +  //
> 
> +  Status  = EFI_SUCCESS;
> 
> +  IndexSt = VkContext->KeyStartIndex;
> 
> +  IndexEd = VkContext->KeyEndIndex;
> 
> +
> 
> +  if (IndexEd == IndexSt) {
> 
> +    DEBUG ((DEBUG_VK_KEYS, "ERROR - Keyboard buffer is empty.\n"));
> 
> +    Status = EFI_NOT_READY;
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  DEBUG ((DEBUG_VK_KEYS | DEBUG_INFO, "VkPopTheKey
> Unicode:    %08x\n", VkContext->Keybuffer[IndexSt].Key.UnicodeChar));
> 
> +  DEBUG ((DEBUG_VK_KEYS | DEBUG_INFO, "VkPopTheKey
> ScanCode:   %08x\n", VkContext->Keybuffer[IndexSt].Key.ScanCode));
> 
> +  DEBUG ((DEBUG_VK_KEYS | DEBUG_INFO, "VkPopTheKey
> ShiftState: %08x\n", VkContext-
> >Keybuffer[IndexSt].KeyState.KeyShiftState));
> 
> +  DEBUG ((DEBUG_VK_KEYS | DEBUG_INFO, "VkPopTheKey
> ToggleState:%08x\n", VkContext-
> >Keybuffer[IndexSt].KeyState.KeyToggleState));
> 
> +
> 
> +  if (KeyData != NULL) {
> 
> +    *KeyData = VkContext->Keybuffer[IndexSt];
> 
> +  }
> 
> +  VkContext->KeyStartIndex = ++IndexSt % MAX_KEY_BUF_SIZE;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkPopTheKey Success,
> Status: %r\n", Status));
> 
> +  goto End;
> 
> +
> 
> +Error:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkPopTheKey Failed,
> Status: %r\n", Status));
> 
> +
> 
> +End:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkPopTheKey End\n"));
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Push the event mapping key index to the input key buffer.
> 
> +
> 
> +  @param[in, out] VkContext    Address of an VK_CONTEXT structure.
> 
> +  @param[in]      Unicode      The font's unicode number.
> 
> +
> 
> +  @retval EFI_SUCCESS          The maping key index did put the key buffer.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +VkPushTheKey (
> 
> +  IN OUT VK_CONTEXT *VkContext,
> 
> +  IN     UINT16     Unicode
> 
> +  )
> 
> +{
> 
> +  UINT8        IndexSt;
> 
> +  UINT8        IndexEd;
> 
> +  EFI_KEY_DATA KeyData;
> 
> +  EFI_STATUS   Status;
> 
> +  LIST_ENTRY   *Link;
> 
> +  VK_NOTIFY    *CurrentNotify;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkPushTheKey Start\n"));
> 
> +  //
> 
> +  // KeyBuffer
> 
> +  // [         0          ]
> 
> +  // [         1          ]<-IndexSt/*IndexEd
> 
> +  // [         2          ]
> 
> +  // [        ...         ]
> 
> +  // [MAX_KEY_BUF_SIZE - 1]
> 
> +  //
> 
> +  IndexSt = VkContext->KeyStartIndex;
> 
> +  IndexEd = VkContext->KeyEndIndex;
> 
> +
> 
> +  Status = EFI_SUCCESS;
> 
> +
> 
> +  //
> 
> +  // Check Keyboard Buffer if is full that will pop the first key
> 
> +  //
> 
> +  if (VkContext->IsSupportPartialKey &&
> 
> +    ((VkContext->KeyEndIndex + 2) % MAX_KEY_BUF_SIZE) == IndexSt) {
> 
> +    VkPopTheKey (VkContext, NULL);
> 
> +  }
> 
> +
> 
> +  if (((VkContext->KeyEndIndex + 1) % MAX_KEY_BUF_SIZE) == IndexSt) {
> 
> +    VkPopTheKey (VkContext, NULL);
> 
> +  }
> 
> +
> 
> +  KeyData.Key.ScanCode             = SCAN_NULL;
> 
> +  KeyData.Key.UnicodeChar          = CHAR_NULL;
> 
> +  KeyData.KeyState.KeyShiftState   = EFI_SHIFT_STATE_VALID;
> 
> +  KeyData.KeyState.KeyToggleState  = VkContext->KeyToggleState;
> 
> +  KeyData.KeyState.KeyToggleState &= ~EFI_CAPS_LOCK_ACTIVE;
> 
> +  KeyData.KeyState.KeyToggleState |= VkContext->IsCapsLockFlag ?
> EFI_CAPS_LOCK_ACTIVE : 0;
> 
> +
> 
> +  switch (Unicode) {
> 
> +  case VkKeyShift:
> 
> +    VkContext->IsShiftKeyFlag = !VkContext->IsShiftKeyFlag;
> 
> +    if (VkContext->PageNumber >= VkPage2 && VkContext->PageNumber
> <= VkPage3) {
> 
> +      VkContext->IsShiftKeyFlag ? VkContext->PageNumber++ : VkContext-
> >PageNumber--;
> 
> +    }
> 
> +    VkContext->IsRedrawUpdateUI = TRUE;
> 
> +    break;
> 
> +
> 
> +  case VkKeyTwoPage:
> 
> +    switch (VkContext->PageNumber) {
> 
> +    case VkPage0:
> 
> +    case VkPage1:
> 
> +      VkContext->IsShiftKeyFlag = FALSE;
> 
> +      VkContext->PageNumber     = VkContext->IsShiftKeyFlag ? VkPage3 :
> VkPage2;
> 
> +      break;
> 
> +
> 
> +    case VkPage2:
> 
> +    case VkPage3:
> 
> +      VkContext->IsShiftKeyFlag = FALSE;
> 
> +      VkContext->PageNumber     = VkContext->IsCapsLockFlag ? VkPage1 :
> VkPage0;
> 
> +      break;
> 
> +
> 
> +    default:
> 
> +      break;
> 
> +    }
> 
> +    VkContext->IsRedrawUpdateUI = TRUE;
> 
> +    break;
> 
> +
> 
> +  case VkKeyCapslock:
> 
> +    VkContext->IsCapsLockFlag = !VkContext->IsCapsLockFlag;
> 
> +    if (VkContext->PageNumber >= VkPage0 && VkContext->PageNumber
> <= VkPage1) {
> 
> +      VkContext->IsCapsLockFlag ? VkContext->PageNumber++ : VkContext-
> >PageNumber--;
> 
> +    }
> 
> +    KeyData.KeyState.KeyToggleState &= ~EFI_CAPS_LOCK_ACTIVE;
> 
> +    KeyData.KeyState.KeyToggleState |= VkContext->IsCapsLockFlag ?
> EFI_CAPS_LOCK_ACTIVE : 0;
> 
> +    VkContext->IsRedrawUpdateUI      = TRUE;
> 
> +    break;
> 
> +
> 
> +  default:
> 
> +    if ((Unicode & VkKeyScanMask) != 0) {
> 
> +      KeyData.Key.ScanCode    = Unicode & ~VkKeyScanMask;
> 
> +    } else {
> 
> +      KeyData.Key.UnicodeChar = Unicode;
> 
> +    }
> 
> +    break;
> 
> +  }
> 
> +
> 
> +  if (KeyData.Key.ScanCode == SCAN_NULL && KeyData.Key.UnicodeChar
> == CHAR_NULL) {
> 
> +    if (!VkContext->IsSupportPartialKey) {
> 
> +      goto End;
> 
> +    }
> 
> +  }
> 
> +
> 
> +  for (Link = GetFirstNode (&VkContext->NotifyList); !IsNull (&VkContext-
> >NotifyList, Link); Link = GetNextNode (&VkContext->NotifyList, Link)) {
> 
> +    CurrentNotify = CR (Link, VK_NOTIFY, NotifyEntry,
> VK_NOTIFY_SIGNATURE);
> 
> +    //
> 
> +    // The key notification function needs to run at TPL_CALLBACK
> 
> +    // while current TPL is TPL_NOTIFY. It will be invoked in
> 
> +    // VkKeyNotifyProcessHandler() which runs at TPL_CALLBACK.
> 
> +    //
> 
> +    if (IsKeyRegistered (&CurrentNotify->KeyData, &KeyData)) {
> 
> +      VkContext->Keybuffer[IndexEd] = KeyData;
> 
> +      VkContext->KeyEndIndex        = ++IndexEd % MAX_KEY_BUF_SIZE;
> 
> +      gBS->SignalEvent (VkContext->KeyNotifyProcessEvent);
> 
> +    }
> 
> +  }
> 
> +  VkContext->Keybuffer[IndexEd] = KeyData;
> 
> +  VkContext->KeyEndIndex        = ++IndexEd % MAX_KEY_BUF_SIZE;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT, "VkPushTheKey Success,
> Status: %r\n", Status));
> 
> +  goto End;
> 
> +
> 
> +End:
> 
> +  DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT, "VkPushTheKey End\n"));
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Process key notify.
> 
> +
> 
> +  @param[in] Event                 Indicates the event that invoke this function.
> 
> +  @param[in] Context               Indicates the calling context.
> 
> +
> 
> +**/
> 
> +VOID
> 
> +EFIAPI
> 
> +VkKeyNotifyProcessHandler (
> 
> +  IN  EFI_EVENT Event,
> 
> +  IN  VOID      *Context
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS   Status;
> 
> +  VK_CONTEXT   *VkContext;
> 
> +  EFI_KEY_DATA KeyData;
> 
> +  LIST_ENTRY   *Link;
> 
> +  LIST_ENTRY   *NotifyList;
> 
> +  VK_NOTIFY    *CurrentNotify;
> 
> +  EFI_TPL      OldTpl;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyNotifyProcessHandler
> Start\n"));
> 
> +  VkContext = (VK_CONTEXT *) Context;
> 
> +  OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
> 
> +
> 
> +  //
> 
> +  // Invoke notification functions.
> 
> +  //
> 
> +  NotifyList = &VkContext->NotifyList;
> 
> +  Status = VkPopTheKey (VkContext, &KeyData);
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  for (Link = GetFirstNode (NotifyList); !IsNull (NotifyList, Link); Link =
> GetNextNode (NotifyList, Link)) {
> 
> +    CurrentNotify = CR (Link, VK_NOTIFY, NotifyEntry,
> VK_NOTIFY_SIGNATURE);
> 
> +    if (IsKeyRegistered (&CurrentNotify->KeyData, &KeyData)) {
> 
> +      CurrentNotify->KeyNotificationFn (&KeyData);
> 
> +    }
> 
> +  }
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyNotifyProcessHandler
> Success, Status: %r\n", Status));
> 
> +  goto End;
> 
> +
> 
> +Error:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyNotifyProcessHandler
> Failed, Status: %r\n", Status));
> 
> +
> 
> +End:
> 
> +  gBS->RestoreTPL (OldTpl);
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyNotifyProcessHandler
> End\n"));
> 
> +}
> 
> +
> 
> +/**
> 
> +  Push the event mapping key index to the input key buffer.
> 
> +
> 
> +  @param[in]  VkContext        Address of an VK_CONTEXT structure.
> 
> +  @param[out] KeyItem          Key Item.
> 
> +  @param[out] Index            Index of Key Item.
> 
> +  @param[in]  TouchX           X position of finger touch.
> 
> +  @param[in]  TouchY           Y position of finger touch.
> 
> +
> 
> +  @retval TRUE                 Touch on Virtual Keyboard.
> 
> +  @retval FALSE                Not touch on Virtual Keyboard.
> 
> +
> 
> +**/
> 
> +BOOLEAN
> 
> +IsTouchVk (
> 
> +  IN  VK_CONTEXT *VkContext,
> 
> +  OUT VK_STRUCT  *KeyItem,
> 
> +  OUT UINT32     *Index,
> 
> +  IN  UINT32     TouchX,
> 
> +  IN  UINT32     TouchY
> 
> +  )
> 
> +{
> 
> +  for (*Index = 0; *Index < VkContext->NumOfKeysInfo; (*Index)++) {
> 
> +    if (VkContext->KeyboardBodyPtr[*Index].DisStartX < TouchX &&
> 
> +        VkContext->KeyboardBodyPtr[*Index].DisEndX   > TouchX &&
> 
> +        VkContext->KeyboardBodyPtr[*Index].DisStartY < TouchY &&
> 
> +        VkContext->KeyboardBodyPtr[*Index].DisEndY   > TouchY) {
> 
> +      break;
> 
> +    }
> 
> +  }
> 
> +  if (*Index != VkContext->NumOfKeysInfo) {
> 
> +    *KeyItem = VkContext->KeyboardBodyPtr[*Index];
> 
> +  }
> 
> +
> 
> +  return *Index != VkContext->NumOfKeysInfo;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Call back function when ready to boot into OS.
> 
> +
> 
> +  It will clear the Virtual Keyboard.
> 
> +
> 
> +  @param[in] Event    Event whose notification function is being invoked.
> 
> +  @param[in] Context  Pointer to the VkContext.
> 
> +
> 
> +**/
> 
> +VOID
> 
> +EFIAPI
> 
> +VkReadyToBootCallBack (
> 
> +  IN EFI_EVENT Event,
> 
> +  IN VOID      *Context
> 
> +  )
> 
> +{
> 
> +  VK_CONTEXT                    *VkContext;
> 
> +  VkContext = (VK_CONTEXT *)Context;
> 
> +
> 
> +  HideVkBody (VkContext);
> 
> +  VkContext->TargetKeyboardDisplay  = VkDisplayAttributeNone;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Timer event
> 
> +
> 
> +  This routine is called at TPL_VK_SYNC.
> 
> +
> 
> +  This routine polls for touch panel input.
> 
> +
> 
> +  @param[in] Event    Event whose notification function is being invoked.
> 
> +  @param[in] Context  Pointer to the notification function's context,
> 
> +                      which is implementation-dependent. Context corresponds
> 
> +                      to NotifyContext in CreateEventEx().
> 
> +
> 
> +**/
> 
> +VOID
> 
> +EFIAPI
> 
> +VkTimer (
> 
> +  IN EFI_EVENT Event,
> 
> +  IN VOID      *Context
> 
> +  )
> 
> +{
> 
> +  EFI_ABSOLUTE_POINTER_PROTOCOL *AbsolutePointer;
> 
> +  EFI_ABSOLUTE_POINTER_STATE    Point;
> 
> +  EFI_STATUS                    Status;
> 
> +  UINT32                        TouchX;
> 
> +  UINT32                        TouchY;
> 
> +  VK_CONTEXT                    *VkContext;
> 
> +  UINT32                        Index;
> 
> +  VK_STRUCT                     KeyItem;
> 
> +  UINT32                        Font;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT, "VkTimer Start\n"));
> 
> +  VkContext = (VK_CONTEXT *)Context;
> 
> +
> 
> +  //
> 
> +  // Update keyboard UI layout
> 
> +  //
> 
> +  CheckIconCleared (VkContext);
> 
> +  CheckScreenCleared (VkContext);
> 
> +  CheckBackgroundChanged (VkContext);
> 
> +  if (VkContext->IsRedrawUpdateUI) {
> 
> +    HideVkBody (VkContext);
> 
> +    DrawKeyboardLayout (VkContext);
> 
> +    VkContext->IsRedrawUpdateUI = FALSE;
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Error handle for invalid information
> 
> +  //
> 
> +  AbsolutePointer = VkContext->AbsolutePointer;
> 
> +  Status = gBS->CheckEvent (AbsolutePointer->WaitForInput);
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    if (Status != EFI_NOT_READY) {
> 
> +      DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_VK_POINTS, "ERROR
> - VkContext->AbsolutePointer->WaitForInput->CheckEvent failed!
> Status: %r\n", Status));
> 
> +    }
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  Status = AbsolutePointer->GetState (AbsolutePointer, &Point);
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_VK_POINTS, "ERROR
> - GetState failed, Status: %r\n", Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  if (VkContext->AbsolutePointer->Mode->AbsoluteMaxX <=
> Point.CurrentX) {
> 
> +    DEBUG ((
> 
> +      DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_VK_POINTS,
> 
> +      "ERROR - X value exceeds maximum: X: 0x%016Lx, MaxX: 0x%016Lx\n",
> 
> +      Point.CurrentX,
> 
> +      VkContext->AbsolutePointer->Mode->AbsoluteMaxX
> 
> +      ));
> 
> +    Status = EFI_PROTOCOL_ERROR;
> 
> +    goto Error;
> 
> +  }
> 
> +  if (VkContext->AbsolutePointer->Mode->AbsoluteMaxY <=
> Point.CurrentY) {
> 
> +    DEBUG ((
> 
> +      DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_VK_POINTS,
> 
> +      "ERROR - Y value exceeds maximum: Y: 0x%016Lx, MaxY: 0x%016Lx\n",
> 
> +      Point.CurrentY,
> 
> +      VkContext->AbsolutePointer->Mode->AbsoluteMaxY
> 
> +      ));
> 
> +    Status = EFI_PROTOCOL_ERROR;
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Update the touch active status
> 
> +  //
> 
> +  VkContext->TouchActive = ((Point.ActiveButtons &
> EFI_ABSP_TouchActive) != 0) ? TRUE : FALSE;
> 
> +  if (!VkContext->TouchActive) {
> 
> +    VkContext->KeyPressed = FALSE;
> 
> +  }
> 
> +  ConvertCoordinate (VkContext, Point, &TouchX, &TouchY);
> 
> +
> 
> +  if (!VkContext->KeyPressed &&
> 
> +      VkContext->TouchActive &&
> 
> +      IsTouchVk (VkContext, &KeyItem, &Index, TouchX, TouchY)) {
> 
> +    VkGetMappingFont (VkContext, KeyItem, &Font);
> 
> +    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_INFO,                   "VK
> Touch event is trigger!\n" ));
> 
> +    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_INFO |
> DEBUG_VK_POINTS, "TouchActive:            0x%04x  \n", VkContext-
> >TouchActive));
> 
> +    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_INFO |
> DEBUG_VK_POINTS, "CurrentKeyboardDisplay: 0x%04x  \n", VkContext-
> >CurrentKeyboardDisplay));
> 
> +    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_INFO |
> DEBUG_VK_POINTS, "X:                      0x%016Lx\n", Point.CurrentX));
> 
> +    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_INFO |
> DEBUG_VK_POINTS, "Y:                      0x%016Lx\n", Point.CurrentY));
> 
> +    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_INFO |
> DEBUG_VK_POINTS, "Z:                      0x%016Lx\n", Point.CurrentZ));
> 
> +    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_INFO |
> DEBUG_VK_POINTS, "Buttons:                0x%08x  \n", Point.ActiveButtons));
> 
> +    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_INFO |
> DEBUG_VK_POINTS, "MapKey Index:           0x%04x  \n", Index));
> 
> +    DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT | DEBUG_INFO |
> DEBUG_VK_POINTS, "Key Unicode:            0x%08x  \n", Font));
> 
> +
> 
> +    switch (Font) {
> 
> +    //
> 
> +    // Touch the small keyboard icon, show/hide the keyboard.
> 
> +    //
> 
> +    case VkKeyTypeMaximum:
> 
> +      KeyboardLayoutHandler (VkContext, Index);
> 
> +      break;
> 
> +
> 
> +    //
> 
> +    // Touch the key raw.
> 
> +    //
> 
> +    default:
> 
> +      if (VkContext->CurrentKeyboardDisplay == VkDisplayAttributeNone) {
> 
> +        break;
> 
> +      }
> 
> +      VkPushTheKey (VkContext, (UINT16) Font);
> 
> +    }
> 
> +    VkContext->KeyPressed = TRUE;
> 
> +  }
> 
> +
> 
> +  DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT, "VkTimer Success, Status: %r\n",
> Status));
> 
> +  goto End;
> 
> +
> 
> +Error:
> 
> +  DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT, "VkTimer Failed, Status: %r\n",
> Status));
> 
> +
> 
> +End:
> 
> +  DEBUG ((DEBUG_VK_TIMER_ENTRY_EXIT, "VkTimer End\n"));
> 
> +  return;
> 
> +}
> 
> +
> 
> +/**
> 
> +  VkTouchWaitForKey - SignalEvent when the keybuffer has keys.
> 
> +
> 
> +  @param[in] Event    Event whose notification function is being invoked.
> 
> +  @param[in] Context  Pointer to the notification function's context,
> 
> +                      which is implementation-dependent.  Context corresponds
> 
> +                      to NotifyContext in CreateEventEx().
> 
> +
> 
> +**/
> 
> +VOID
> 
> +EFIAPI
> 
> +VkTouchWaitForKey (
> 
> +  IN EFI_EVENT Event,
> 
> +  IN VOID      *Context
> 
> +  )
> 
> +{
> 
> +  VK_CONTEXT *VkContext;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkTouchWaitForKey
> Start\n"));
> 
> +  VkContext = (VK_CONTEXT*) Context;
> 
> +
> 
> +  if (VkContext->KeyStartIndex != VkContext->KeyEndIndex) {
> 
> +    DEBUG ((DEBUG_VK_KEYS, "Signal VkTouchWaitForKey\n"));
> 
> +    gBS->SignalEvent (Event);
> 
> +  }
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkTouchWaitForKey
> End\n"));
> 
> +}
> 
> +
> 
> +/**
> 
> +  Get image file data from BIOS image through specific ImageId.
> 
> +
> 
> +  @param[in] VkContext      Address of an VK_CONTEXT structure.
> 
> +  @param[in] ImageId        Guid to get specific image file used.
> 
> +
> 
> +  @retval EFI_IMAGE_INPUT   Image data on BIOS image.
> 
> +
> 
> +**/
> 
> +EFI_IMAGE_INPUT*
> 
> +VkGetImage (
> 
> +  IN VK_CONTEXT   *VkContext,
> 
> +  IN EFI_IMAGE_ID ImageId
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS      Status;
> 
> +  EFI_IMAGE_INPUT Image;
> 
> +  EFI_IMAGE_INPUT *VkImage;
> 
> +
> 
> +
> 
> +  Status = VkContext->HiiImageEx->GetImageEx (
> 
> +                                    VkContext->HiiImageEx,
> 
> +                                    VkContext->HiiHandle,
> 
> +                                    ImageId,
> 
> +                                    &Image
> 
> +                                    );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    ASSERT_EFI_ERROR (Status);
> 
> +  }
> 
> +
> 
> +  VkImage = AllocateCopyPool (sizeof (EFI_IMAGE_INPUT), &Image);
> 
> +  if (VkImage == NULL) {
> 
> +    ASSERT_EFI_ERROR (EFI_OUT_OF_RESOURCES);
> 
> +    return NULL;
> 
> +  }
> 
> +
> 
> +  return VkImage;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Dump partial debug message on VkContext.
> 
> +
> 
> +  @param[in] VkContext        Address of an VK_CONTEXT structure.
> 
> +
> 
> +**/
> 
> +VOID
> 
> +VkDumpContext (
> 
> +  IN VK_CONTEXT *VkContext
> 
> +  )
> 
> +{
> 
> +  DEBUG ((
> 
> +    DEBUG_VK_ROUTINE_ENTRY_EXIT,
> 
> +    "VkContext->Signature: 0x%016x\n",
> 
> +    VkContext->Signature
> 
> +    ));
> 
> +  DEBUG ((
> 
> +    DEBUG_VK_ROUTINE_ENTRY_EXIT,
> 
> +    "VkContext->Controller: 0x%016x\n",
> 
> +    VkContext->Controller
> 
> +    ));
> 
> +  DEBUG ((
> 
> +    DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_VK_GRAPHICS_INFO,
> 
> +    "VkContext->GraphicsOutput->Mode->MaxMode: 0x%08x\n",
> 
> +    VkContext->GraphicsOutput->Mode->MaxMode
> 
> +    ));
> 
> +  DEBUG ((
> 
> +    DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_VK_GRAPHICS_INFO,
> 
> +    "VkContext->GraphicsOutput->Mode->Mode: 0x%08x\n",
> 
> +    VkContext->GraphicsOutput->Mode->Mode
> 
> +    ));
> 
> +  DEBUG ((
> 
> +    DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_VK_GRAPHICS_INFO,
> 
> +    "VkContext->GraphicsOutput->Mode->Info->HorizontalResolution:
> 0x%08x\n",
> 
> +    VkContext->GraphicsOutput->Mode->Info->HorizontalResolution
> 
> +    ));
> 
> +  DEBUG ((
> 
> +    DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_VK_GRAPHICS_INFO,
> 
> +    "VkContext->GraphicsOutput->Mode->Info->VerticalResolution:
> 0x%08x\n",
> 
> +    VkContext->GraphicsOutput->Mode->Info->VerticalResolution
> 
> +    ));
> 
> +  DEBUG ((
> 
> +    DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_VK_POINTS,
> 
> +    "VkContext->AbsolutePointer->Mode X: 0x%016Lx - 0x%016Lx\n",
> 
> +    VkContext->AbsolutePointer->Mode->AbsoluteMinX,
> 
> +    VkContext->AbsolutePointer->Mode->AbsoluteMaxX
> 
> +    ));
> 
> +  DEBUG ((
> 
> +    DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_VK_POINTS,
> 
> +    "VkContext->AbsolutePointer->Mode Y: 0x%016Lx - 0x%016Lx\n",
> 
> +    VkContext->AbsolutePointer->Mode->AbsoluteMinY,
> 
> +    VkContext->AbsolutePointer->Mode->AbsoluteMaxY
> 
> +    ));
> 
> +  DEBUG ((
> 
> +    DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_VK_POINTS,
> 
> +    "VkContext->AbsolutePointer->Mode Z: 0x%016Lx - 0x%016Lx\n",
> 
> +    VkContext->AbsolutePointer->Mode->AbsoluteMinZ,
> 
> +    VkContext->AbsolutePointer->Mode->AbsoluteMaxZ
> 
> +    ));
> 
> +  DEBUG ((
> 
> +    DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_VK_POINTS,
> 
> +    "VkContext->AbsolutePointer->Mode->Attributes: 0x%08x\n",
> 
> +    VkContext->AbsolutePointer->Mode->Attributes
> 
> +    ));
> 
> +}
> 
> +
> 
> +/**
> 
> +  Start the virtual keyboard driver
> 
> +
> 
> +  This routine allocates the necessary resources for the driver.
> 
> +
> 
> +  This routine is called by VirtualKeyboardDriverStart to complete the driver
> 
> +  initialization.
> 
> +
> 
> +  @param[in, out] VkContext        Address of an VK_CONTEXT structure
> 
> +  @param[in]      Controller       Handle of device to work with.
> 
> +
> 
> +  @retval EFI_SUCCESS              Driver API properly initialized
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +VkApiStart (
> 
> +  IN OUT VK_CONTEXT *VkContext,
> 
> +  IN EFI_HANDLE     Controller
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS                        Status;
> 
> +  EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *SimpleEx;
> 
> +  EFI_KEY_DATA                      KeyData;
> 
> +  EFI_HANDLE                        NotifyHandle;
> 
> +  EFI_EVENT                         ReadyToBootEvent;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkApiStart Start\n"));
> 
> +
> 
> +  Status = gBS->CreateEvent (
> 
> +                  EVT_NOTIFY_SIGNAL,
> 
> +                  TPL_CALLBACK,
> 
> +                  VkKeyNotifyProcessHandler,
> 
> +                  VkContext,
> 
> +                  &VkContext->KeyNotifyProcessEvent
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR -
> Failed to create VkContext->KeyNotifyProcessEvent, Status: %r\n", Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  Status = gBS->CreateEvent (
> 
> +                  EVT_NOTIFY_WAIT,
> 
> +                  TPL_NOTIFY,
> 
> +                  VkTouchWaitForKey,
> 
> +                  VkContext,
> 
> +                  &(VkContext->SimpleTextIn.WaitForKey)
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR -
> Failed to create VkContext->SimpleTextIn.WaitForKey, Status: %r\n",
> Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  Status = gBS->CreateEvent (
> 
> +                  EVT_NOTIFY_WAIT,
> 
> +                  TPL_NOTIFY,
> 
> +                  VkTouchWaitForKey,
> 
> +                  VkContext,
> 
> +                  &(VkContext->SimpleTextInEx.WaitForKeyEx)
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR -
> Failed to create VkContext->SimpleTextInEx.WaitForKeyEx, Status %r\n",
> Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  Status = gBS->CreateEvent (
> 
> +                  EVT_TIMER | EVT_NOTIFY_SIGNAL,
> 
> +                  TPL_VK_SYNC,
> 
> +                  VkTimer,
> 
> +                  (VOID *)VkContext,
> 
> +                  &(VkContext->TimerEvent)
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR -
> Failed to create the timer event, Status: %r\n", Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  Status = gBS->SetTimer (
> 
> +                  VkContext->TimerEvent,
> 
> +                  TimerPeriodic,
> 
> +                  (UINT64) VK_POLL_INTERVAL
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR -
> Failed to set the timer event, Status: %r\n", Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Create event to clear keyboard before boot into OS.
> 
> +  //
> 
> +  Status = EfiCreateEventReadyToBootEx (
> 
> +             TPL_CALLBACK,
> 
> +             VkReadyToBootCallBack,
> 
> +             (VOID *)VkContext,
> 
> +             &ReadyToBootEvent
> 
> +             );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR -
> Failed to create ReadyToBootEvent, Status: %r\n", Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  Status = gBS->LocateProtocol (
> 
> +                  &gEfiHiiImageExProtocolGuid,
> 
> +                  NULL,
> 
> +                  (VOID **) &VkContext->HiiImageEx
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR -
> Failed to open HiiImageEx protocol, Status: %r\n", Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Initialize VkContext
> 
> +  //
> 
> +  VkContext->Signature                          = VK_SIGNATURE;
> 
> +  VkContext->Controller                         = Controller;
> 
> +  VkContext->SimpleTextIn.Reset                 = VkKeyboardReset;
> 
> +  VkContext->SimpleTextIn.ReadKeyStroke         =
> VkKeyboardReadKeyStroke;
> 
> +  VkContext->SimpleTextInEx.Reset               = VkKeyboardResetEx;
> 
> +  VkContext->SimpleTextInEx.ReadKeyStrokeEx     =
> VkKeyboardReadKeyStrokeEx;
> 
> +  VkContext->SimpleTextInEx.SetState            = VkKeyboardSetState;
> 
> +  VkContext->SimpleTextInEx.RegisterKeyNotify   =
> VkKeyboardRegisterKeyNotify;
> 
> +  VkContext->SimpleTextInEx.UnregisterKeyNotify =
> VkKeyboardUnregisterKeyNotify;
> 
> +  VkContext->IsIconShowed                       = FALSE;
> 
> +  VkContext->IsBackgroundChanged                = FALSE;
> 
> +  VkContext->PageNumber                         = 0;
> 
> +  VkContext->CurrentKeyboardDisplay             = VkDisplayAttributeNone;
> 
> +  VkContext->TargetKeyboardDisplay              = VkDisplayAttributeNone;
> 
> +  VkContext->VkBodyBackgroundBltBuffer          = NULL;
> 
> +  VkContext->VkBodyCompoundBltBuffer            = NULL;
> 
> +  VkContext->VkBodyBltSize                      = 0;
> 
> +  VkContext->VkBodyBltStartX                    = 0;
> 
> +  VkContext->VkBodyBltStartY                    = 0;
> 
> +  VkContext->VkBodyBltHeight                    = 0;
> 
> +  VkContext->VkBodyBltWidth                     = 0;
> 
> +  VkContext->IconBltBuffer                      = NULL;
> 
> +  VkContext->IconBltSize                        = 0;
> 
> +  VkContext->IconReDrawCheck                    = 0;
> 
> +  VkContext->FullIconUpdatedFlag                = FALSE;
> 
> +  VkContext->SimIconUpdatedFlag                 = FALSE;
> 
> +  VkContext->KeyStartIndex                      = 0;
> 
> +  VkContext->KeyEndIndex                        = 0;
> 
> +  VkContext->KeyToggleState                     = EFI_TOGGLE_STATE_VALID;
> 
> +  VkContext->SmallIcon                          = VkGetImage (VkContext,
> IMAGE_TOKEN (IMG_VK_SIMPLEICON));
> 
> +  VkContext->FullIcon                           = VkGetImage (VkContext,
> IMAGE_TOKEN (IMG_VK_FULLICON));
> 
> +  VkContext->SimKeyBody                         = VkGetImage (VkContext,
> IMAGE_TOKEN (IMG_VK_SIMPLEKEYBOARD));
> 
> +  VkContext->DigKeyBody                         = VkGetImage (VkContext,
> IMAGE_TOKEN (IMG_VK_DIGITKEYBOARD));
> 
> +  VkContext->CapLeKeyBody                       = VkGetImage (VkContext,
> IMAGE_TOKEN (IMG_VK_CAPITALLETTERKEYBOARD));
> 
> +
> 
> +  InitializeListHead (&VkContext->NotifyList);
> 
> +
> 
> +  Status = SetCharacterPosition (VkContext, 800, 600);
> 
> +  ASSERT_EFI_ERROR (Status);
> 
> +
> 
> +  Status = DrawKeyboardLayout (VkContext);
> 
> +  ASSERT_EFI_ERROR (Status);
> 
> +
> 
> +  Status = HideVkBody (VkContext);
> 
> +  ASSERT_EFI_ERROR (Status);
> 
> +
> 
> +  Status = HideVkIcon (VkContext);
> 
> +  ASSERT_EFI_ERROR (Status);
> 
> +
> 
> +  DEBUG_CODE (
> 
> +    VkDumpContext (VkContext);
> 
> +  );
> 
> +
> 
> +  Status = gBS->HandleProtocol (
> 
> +                  gST->ConsoleInHandle,
> 
> +                  &gEfiSimpleTextInputExProtocolGuid,
> 
> +                  (VOID **)&SimpleEx
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR -
> Failed to found ConIn Protocol, Status: %r\n", Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  KeyData.KeyState.KeyToggleState = 0;
> 
> +  KeyData.KeyState.KeyShiftState  = 0;
> 
> +  KeyData.Key.ScanCode            = SCAN_ESC;
> 
> +  KeyData.Key.UnicodeChar         = CHAR_NULL;
> 
> +  NotifyHandle                    = NULL;
> 
> +  Status = SimpleEx->RegisterKeyNotify (
> 
> +                       SimpleEx,
> 
> +                       &KeyData,
> 
> +                       VkNotifyKeyCallback,
> 
> +                       &NotifyHandle
> 
> +                       );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR -
> Failed to register 'Esc', Status: %r\n", Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  KeyData.KeyState.KeyToggleState = 0;
> 
> +  KeyData.KeyState.KeyShiftState  = 0;
> 
> +  KeyData.Key.ScanCode            = SCAN_NULL;
> 
> +  KeyData.Key.UnicodeChar         = CHAR_CARRIAGE_RETURN;
> 
> +  Status = SimpleEx->RegisterKeyNotify (
> 
> +                       SimpleEx,
> 
> +                       &KeyData,
> 
> +                       VkNotifyKeyCallback,
> 
> +                       &NotifyHandle
> 
> +                       );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR -
> Failed to register 'Enter', Status: %r\n", Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  for (KeyData.Key.UnicodeChar = L' '; KeyData.Key.UnicodeChar <= L'~';
> KeyData.Key.UnicodeChar++) {
> 
> +    Status = SimpleEx->RegisterKeyNotify (
> 
> +                         SimpleEx,
> 
> +                         &KeyData,
> 
> +                         VkNotifyKeyCallback,
> 
> +                         &NotifyHandle
> 
> +                         );
> 
> +    if (EFI_ERROR (Status)) {
> 
> +      DEBUG ((
> 
> +        DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR,
> 
> +        "ERROR - Failed to register '%c', Status: %r\n",
> 
> +        KeyData.Key.UnicodeChar,
> 
> +        Status
> 
> +        ));
> 
> +      break;
> 
> +    }
> 
> +  }
> 
> +  if (EFI_ERROR(Status)) {
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkApiStart Success,
> Status: %r\n", Status));
> 
> +  goto End;
> 
> +
> 
> +Error:
> 
> +  VkApiStop (VkContext);
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkApiStart Failed,
> Status: %r\n", Status));
> 
> +
> 
> +End:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkApiStart End\n"));
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Stop the virtual keyboard driver
> 
> +
> 
> +  This routine releases the resources allocated by VKApiStart.
> 
> +
> 
> +  This routine is called by VirtualKeyboardDriverStop to initiate the driver
> 
> +  shutdown.
> 
> +
> 
> +  @param[in] VkContext        Address of an VK_CONTEXT structure
> 
> +
> 
> +**/
> 
> +VOID
> 
> +VkApiStop (
> 
> +  IN VK_CONTEXT *VkContext
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS Status;
> 
> +  VK_NOTIFY  *NotifyNode;
> 
> +  LIST_ENTRY *NotifyList;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkApiStop Start\n"));
> 
> +
> 
> +  Status = gBS->SetTimer (VkContext->TimerEvent, TimerCancel, 0);
> 
> +  ASSERT_EFI_ERROR (Status);
> 
> +
> 
> +  if (VkContext->KeyNotifyProcessEvent != NULL) {
> 
> +    Status = gBS->CloseEvent (VkContext->KeyNotifyProcessEvent);
> 
> +    ASSERT_EFI_ERROR (Status);
> 
> +    VkContext->KeyNotifyProcessEvent = NULL;
> 
> +  }
> 
> +
> 
> +  if (VkContext->TimerEvent != NULL) {
> 
> +    Status = gBS->CloseEvent (VkContext->TimerEvent);
> 
> +    ASSERT_EFI_ERROR (Status);
> 
> +    VkContext->TimerEvent = NULL;
> 
> +  }
> 
> +
> 
> +  if (VkContext->SimpleTextIn.WaitForKey != NULL) {
> 
> +    Status = gBS->CloseEvent (VkContext->SimpleTextIn.WaitForKey);
> 
> +    ASSERT_EFI_ERROR (Status);
> 
> +    VkContext->SimpleTextIn.WaitForKey = NULL;
> 
> +  }
> 
> +
> 
> +  if (VkContext->SimpleTextInEx.WaitForKeyEx != NULL) {
> 
> +    Status = gBS->CloseEvent (VkContext->SimpleTextInEx.WaitForKeyEx);
> 
> +    ASSERT_EFI_ERROR (Status);
> 
> +    VkContext->SimpleTextInEx.WaitForKeyEx = NULL;
> 
> +  }
> 
> +
> 
> +  NotifyList = &VkContext->NotifyList;
> 
> +  if (NotifyList != NULL) {
> 
> +    while (!IsListEmpty (NotifyList)) {
> 
> +      NotifyNode = CR (NotifyList->ForwardLink, VK_NOTIFY, NotifyEntry,
> VK_NOTIFY_SIGNATURE);
> 
> +      RemoveEntryList (NotifyList->ForwardLink);
> 
> +      gBS->FreePool (NotifyNode);
> 
> +    }
> 
> +  }
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkApiStop End\n"));
> 
> +}
> 
> +
> 
> +/**
> 
> +  Reset the input device and optionally run diagnostics
> 
> +
> 
> +  @param[in] This                 Protocol instance pointer.
> 
> +  @param[in] ExtendedVerification Driver may perform diagnostics on reset.
> 
> +
> 
> +  @retval EFI_SUCCESS             The device was reset.
> 
> +  @retval EFI_DEVICE_ERROR        The device is not functioning properly and
> could not be reset.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VkKeyboardReset (
> 
> +  IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,
> 
> +  IN BOOLEAN                        ExtendedVerification
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS Status;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardReset Start\n"));
> 
> +  Status = EFI_SUCCESS;
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardReset End\n"));
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Resets the input device hardware.
> 
> +
> 
> +  The Reset() function resets the input device hardware. As part
> 
> +  of initialization process, the firmware/device will make a quick
> 
> +  but reasonable attempt to verify that the device is functioning.
> 
> +  If the ExtendedVerification flag is TRUE the firmware may take
> 
> +  an extended amount of time to verify the device is operating on
> 
> +  reset. Otherwise the reset operation is to occur as quickly as
> 
> +  possible. The hardware verification process is not defined by
> 
> +  this specification and is left up to the platform firmware or
> 
> +  driver to implement.
> 
> +
> 
> +  @param[in] This                 A pointer to the
> EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL instance.
> 
> +
> 
> +  @param[in] ExtendedVerification Indicates that the driver may perform a
> more exhaustive
> 
> +                                  verification operation of the device during reset.
> 
> +
> 
> +  @retval EFI_SUCCESS             The device was reset.
> 
> +  @retval EFI_DEVICE_ERROR        The device is not functioning correctly and
> could not be reset.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VkKeyboardResetEx (
> 
> +  IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
> 
> +  IN BOOLEAN                           ExtendedVerification
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS Status;
> 
> +  VK_CONTEXT *VkContext;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardResetEx
> Start\n"));
> 
> +
> 
> +  Status = EFI_SUCCESS;
> 
> +  if (This == NULL) {
> 
> +    Status = EFI_INVALID_PARAMETER;
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  VkContext = VK_CONTEXT_FROM_SIMPLETEXTINEX_PROTOCOL (This);
> 
> +
> 
> +  Status = VkContext->SimpleTextIn.Reset (&VkContext->SimpleTextIn,
> ExtendedVerification);
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_KEYS, "ERROR - Failed to VK reset, Status: %r\n",
> Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardResetEx
> Success, Status: %r\n", Status));
> 
> +  goto End;
> 
> +
> 
> +Error:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardResetEx Failed,
> Status: %r\n", Status));
> 
> +
> 
> +End:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardResetEx
> End\n"));
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Reads the next keystroke from the input device. The WaitForKey Event
> can
> 
> +  be used to test for existence of a keystroke via WaitForEvent () call.
> 
> +
> 
> +  @param[in]  This         Protocol instance pointer.
> 
> +  @param[out] Key          Driver may perform diagnostics on reset.
> 
> +
> 
> +  @retval EFI_SUCCESS      The keystroke information was returned.
> 
> +  @retval EFI_NOT_READY    There was no keystroke data available.
> 
> +  @retval EFI_DEVICE_ERROR The keystroke information was not returned
> due to
> 
> +                           hardware errors.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VkKeyboardReadKeyStroke (
> 
> +  IN  EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,
> 
> +  OUT EFI_INPUT_KEY                  *Key
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS    Status;
> 
> +  VK_CONTEXT    *VkContext;
> 
> +  EFI_KEY_DATA  TmpKeyData;
> 
> +  EFI_TPL       OldTpl;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardReadKeyStroke
> Start\n"));
> 
> +
> 
> +  OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
> 
> +  if (This == NULL || Key == NULL) {
> 
> +    Status = EFI_INVALID_PARAMETER;
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  VkContext = VK_CONTEXT_FROM_PROTOCOL (This);
> 
> +
> 
> +  Status = VkKeyboardReadKeyStrokeEx (&VkContext->SimpleTextInEx,
> &TmpKeyData);
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    goto Error;
> 
> +  }
> 
> +  *Key = TmpKeyData.Key;
> 
> +
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardReadKeyStroke
> Success, Status: %r\n", Status));
> 
> +  goto End;
> 
> +
> 
> +Error:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardReadKeyStroke
> Failed, Status: %r\n", Status));
> 
> +
> 
> +End:
> 
> +  gBS->RestoreTPL (OldTpl);
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardReadKeyStroke
> End\n"));
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Reads the next keystroke from the input device.
> 
> +
> 
> +  @param[in]  This               Protocol instance pointer.
> 
> +  @param[out] KeyData            A pointer to a buffer that is filled in with the
> keystroke
> 
> +                                 state data for the key that was pressed.
> 
> +
> 
> +  @retval EFI_SUCCESS            The keystroke information was returned.
> 
> +  @retval EFI_NOT_READY          There was no keystroke data available.
> 
> +  @retval EFI_INVALID_PARAMETER  This or KeyData is NULL.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VkKeyboardReadKeyStrokeEx (
> 
> +  IN  EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
> 
> +  OUT EFI_KEY_DATA                      *KeyData
> 
> +  )
> 
> +{
> 
> +  VK_CONTEXT        *VkContext;
> 
> +  EFI_STATUS        Status;
> 
> +  EFI_TPL           OldTpl;
> 
> +  EFI_KEY_DATA      TmpKeyData;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VkKeyboardReadKeyStrokeEx Start\n"));
> 
> +
> 
> +  OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
> 
> +  if (This == NULL || KeyData == NULL) {
> 
> +    Status = EFI_INVALID_PARAMETER;
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  VkContext = VK_CONTEXT_FROM_SIMPLETEXTINEX_PROTOCOL (This);
> 
> +
> 
> +  while (TRUE) {
> 
> +    Status = VkPopTheKey (VkContext, &TmpKeyData);
> 
> +    if (EFI_ERROR (Status)) {
> 
> +      DEBUG ((DEBUG_VK_KEYS, "ERROR - Failed to VkPopTheKey check
> whether keybuffer is empty, Status: %r\n", Status));
> 
> +      goto Error;
> 
> +    }
> 
> +    if (TmpKeyData.Key.ScanCode != SCAN_NULL ||
> TmpKeyData.Key.UnicodeChar != CHAR_NULL) {
> 
> +      break;
> 
> +    }
> 
> +  }
> 
> +  *KeyData = TmpKeyData;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VkKeyboardReadKeyStrokeEx Success, Status: %r\n", Status));
> 
> +  goto End;
> 
> +
> 
> +Error:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VkKeyboardReadKeyStrokeEx Failed, Status: %r\n", Status));
> 
> +
> 
> +End:
> 
> +  gBS->RestoreTPL (OldTpl);
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VkKeyboardReadKeyStrokeEx End\n"));
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Set certain state for the input device.
> 
> +
> 
> +  @param[in] This                 Protocol instance pointer.
> 
> +  @param[in] KeyToggleState       A pointer to the EFI_KEY_TOGGLE_STATE
> to set the
> 
> +                                  state for the input device.
> 
> +
> 
> +  @retval EFI_SUCCESS             The device state was set appropriately.
> 
> +  @retval EFI_INVALID_PARAMETER   This or KeyToggleState is NULL.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VkKeyboardSetState (
> 
> +  IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
> 
> +  IN EFI_KEY_TOGGLE_STATE              *KeyToggleState
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS Status;
> 
> +  VK_CONTEXT *VkContext;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardSetState
> Start\n"));
> 
> +
> 
> +  Status = EFI_SUCCESS;
> 
> +  if (This == NULL || KeyToggleState == NULL) {
> 
> +    Status = EFI_INVALID_PARAMETER;
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  VkContext = VK_CONTEXT_FROM_SIMPLETEXTINEX_PROTOCOL (This);
> 
> +
> 
> +  VkContext->KeyToggleState      = *KeyToggleState;
> 
> +  VkContext->IsCapsLockFlag      = (*KeyToggleState &
> EFI_CAPS_LOCK_ACTIVE) == EFI_CAPS_LOCK_ACTIVE;
> 
> +  VkContext->IsSupportPartialKey = (*KeyToggleState &
> EFI_KEY_STATE_EXPOSED) == EFI_KEY_STATE_EXPOSED;
> 
> +
> 
> +  if (VkContext->PageNumber >= VkPage0 && VkContext->PageNumber <=
> VkPage1) {
> 
> +    VkContext->PageNumber = VkContext->IsCapsLockFlag ? VkPage1 :
> VkPage0;
> 
> +  }
> 
> +
> 
> +  HideVkBody (VkContext);
> 
> +  DrawKeyboardLayout (VkContext);
> 
> +
> 
> +  DEBUG ((DEBUG_VK_KEYS | DEBUG_INFO, "VkContext-
> >KeyToggleState:      %02x\n", VkContext->KeyToggleState));
> 
> +  DEBUG ((DEBUG_VK_KEYS | DEBUG_INFO, "VkContext-
> >IsCapsLockFlag:      %02x\n", VkContext->IsCapsLockFlag));
> 
> +  DEBUG ((DEBUG_VK_KEYS | DEBUG_INFO, "VkContext-
> >IsSupportPartialKey: %02x\n", VkContext->IsSupportPartialKey));
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardSetState
> Success, Status: %r\n", Status));
> 
> +  goto End;
> 
> +
> 
> +Error:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardSetState Failed,
> Status: %r\n", Status));
> 
> +
> 
> +End:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VkKeyboardSetState
> End\n"));
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Register a notification function for a particular keystroke for the input
> device.
> 
> +
> 
> +  @param[in]  This                        Protocol instance pointer.
> 
> +  @param[in]  KeyData                     A pointer to a buffer that is filled in with
> the keystroke
> 
> +                                          information data for the key that was pressed.
> 
> +  @param[in]  KeyNotificationFunction     Points to the function to be called
> when the key
> 
> +                                          sequence is typed specified by KeyData.
> 
> +  @param[out] NotifyHandle                Points to the unique handle assigned to
> the registered notification.
> 
> +
> 
> +  @retval EFI_SUCCESS                     The notification function was registered
> successfully.
> 
> +  @retval EFI_OUT_OF_RESOURCES            Unable to allocate resources for
> necessary data structures.
> 
> +  @retval EFI_INVALID_PARAMETER           KeyData or NotifyHandle or
> KeyNotificationFunction is NULL.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VkKeyboardRegisterKeyNotify (
> 
> +  IN  EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
> 
> +  IN  EFI_KEY_DATA                      *KeyData,
> 
> +  IN  EFI_KEY_NOTIFY_FUNCTION           KeyNotificationFunction,
> 
> +  OUT EFI_HANDLE                        *NotifyHandle
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS Status;
> 
> +  EFI_TPL    OldTpl;
> 
> +  VK_CONTEXT *VkContext;
> 
> +  LIST_ENTRY *Link;
> 
> +  VK_NOTIFY  *CurrentNotify;
> 
> +  VK_NOTIFY  *NewNotify;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VkKeyboardRegisterKeyNotify Start\n"));
> 
> +
> 
> +  //
> 
> +  // Enter critical section
> 
> +  //
> 
> +  OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
> 
> +  Status = EFI_SUCCESS;
> 
> +  if (This == NULL || KeyData == NULL || NotifyHandle == NULL ||
> KeyNotificationFunction == NULL) {
> 
> +    Status = EFI_INVALID_PARAMETER;
> 
> +    goto Error;
> 
> +  }
> 
> +  VkContext = VK_CONTEXT_FROM_SIMPLETEXTINEX_PROTOCOL (This);
> 
> +
> 
> +
> 
> +  //
> 
> +  // Return EFI_SUCCESS if the (KeyData, NotificationFunction) is already
> registered.
> 
> +  //
> 
> +  for (Link = VkContext->NotifyList.ForwardLink; Link != &VkContext-
> >NotifyList; Link = Link->ForwardLink) {
> 
> +    CurrentNotify = CR (Link, VK_NOTIFY, NotifyEntry,
> VK_NOTIFY_SIGNATURE);
> 
> +    if (IsKeyRegistered (&CurrentNotify->KeyData, KeyData)) {
> 
> +      if (CurrentNotify->KeyNotificationFn == KeyNotificationFunction) {
> 
> +        *NotifyHandle = CurrentNotify;
> 
> +        Status = EFI_SUCCESS;
> 
> +        goto End;
> 
> +      }
> 
> +    }
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Allocate resource to save the notification function
> 
> +  //
> 
> +  NewNotify = (VK_NOTIFY *) AllocateZeroPool (sizeof (VK_NOTIFY));
> 
> +  if (NewNotify == NULL) {
> 
> +    Status = EFI_OUT_OF_RESOURCES;
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  NewNotify->Signature         = VK_NOTIFY_SIGNATURE;
> 
> +  NewNotify->KeyNotificationFn = KeyNotificationFunction;
> 
> +  CopyMem (&NewNotify->KeyData, KeyData, sizeof (EFI_KEY_DATA));
> 
> +  InsertTailList (&VkContext->NotifyList, &NewNotify->NotifyEntry);
> 
> +
> 
> +  *NotifyHandle = NewNotify;
> 
> +  Status        = EFI_SUCCESS;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VkKeyboardRegisterKeyNotify Success, Status: %r\n", Status));
> 
> +  goto End;
> 
> +
> 
> +Error:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VkKeyboardRegisterKeyNotify Failed, Status: %r\n", Status));
> 
> +
> 
> +End:
> 
> +  //
> 
> +  // Leave critical section and return
> 
> +  //
> 
> +  gBS->RestoreTPL (OldTpl);
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VkKeyboardRegisterKeyNotify End\n"));
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Remove a registered notification function from a particular keystroke.
> 
> +
> 
> +  @param[in] This                Protocol instance pointer.
> 
> +  @param[in] NotificationHandle  The handle of the notification function
> being unregistered.
> 
> +
> 
> +  @retval EFI_SUCCESS            The notification function was unregistered
> successfully.
> 
> +  @retval EFI_INVALID_PARAMETER  The NotificationHandle is invalid
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VkKeyboardUnregisterKeyNotify (
> 
> +  IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
> 
> +  IN EFI_HANDLE                        NotificationHandle
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS Status;
> 
> +  VK_CONTEXT *VkContext;
> 
> +  EFI_TPL    OldTpl;
> 
> +  LIST_ENTRY *Link;
> 
> +  VK_NOTIFY  *CurrentNotify;
> 
> +  BOOLEAN    IsFindNotifyHandle;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VkKeyboardUnregisterKeyNotify Start\n"));
> 
> +
> 
> +  //
> 
> +  // Enter critical section
> 
> +  //
> 
> +  OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
> 
> +  Status = EFI_SUCCESS;
> 
> +  if (This == NULL || NotificationHandle == NULL) {
> 
> +    Status = EFI_INVALID_PARAMETER;
> 
> +    goto Error;
> 
> +  }
> 
> +  VkContext = VK_CONTEXT_FROM_SIMPLETEXTINEX_PROTOCOL (This);
> 
> +
> 
> +  IsFindNotifyHandle = FALSE;
> 
> +  for (Link = VkContext->NotifyList.ForwardLink; Link != &VkContext-
> >NotifyList; Link = Link->ForwardLink) {
> 
> +    CurrentNotify = CR (Link, VK_NOTIFY, NotifyEntry,
> VK_NOTIFY_SIGNATURE);
> 
> +    if (CurrentNotify == NotificationHandle) {
> 
> +      //
> 
> +      // Remove the notification function from NotifyList and free resources
> 
> +      //
> 
> +      RemoveEntryList (&CurrentNotify->NotifyEntry);
> 
> +
> 
> +      gBS->FreePool (CurrentNotify);
> 
> +      IsFindNotifyHandle = TRUE;
> 
> +      break;
> 
> +    }
> 
> +  }
> 
> +
> 
> +  if (!IsFindNotifyHandle) {
> 
> +    Status = EFI_INVALID_PARAMETER;
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VkKeyboardUnregisterKeyNotify Success, Status: %r\n", Status));
> 
> +  goto End;
> 
> +
> 
> +Error:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VkKeyboardUnregisterKeyNotify Failed, Status: %r\n", Status));
> 
> +
> 
> +End:
> 
> +  //
> 
> +  // Leave critical section and return
> 
> +  //
> 
> +  gBS->RestoreTPL (OldTpl);
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VkKeyboardUnregisterKeyNotify End\n"));
> 
> +  return Status;
> 
> +}
> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/KeyboardLayout.c
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/KeyboardLayout.c
> new file mode 100644
> index 0000000000..744c4324d3
> --- /dev/null
> +++
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/KeyboardLayout.c
> @@ -0,0 +1,1438 @@
> +/** @file
> 
> +  Virtural Keyboard Layout Engine
> 
> +
> 
> +  Copyright (c) 2012 - 2020, Intel Corporation. All rights reserved.<BR>
> 
> +  SPDX-License-Identifier: BSD-2-Clause-Patent
> 
> +
> 
> +**/
> 
> +
> 
> +#include "VirtualKeyboard.h"
> 
> +
> 
> +//
> 
> +// 1.FullKeyboardBody
> 
> +// Follow below design
> 
> +//   (1).\KeyboardLayout\CapitalLetterKeyboard.bmp
> 
> +//   (2).\KeyboardLayout\DigitKeyboard.bmp
> 
> +// Based on keyboard's (startX, startY)
> 
> +//
> 
> +// Page0Font
> 
> +// +---+---+---+---+---+---+---+---+---+---+---+
> 
> +// | q | w | e | r | t | y | u | i | o | p |<X|| Line 0
> 
> +// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> 
> +// | | a | s | d | f | g | h | j | k | l | F2| | Line 1
> 
> +// +-+---+---+---+---+---+---+---+---+---+---+-+
> 
> +// |Caps | z | x | c | v | b | n | m |aU |Enter| Line 2
> 
> +// +-----+---+---+---+---+---+---+---+---+---+-+
> 
> +// | Esc |12#|       Space       |aL |aD |aR | | Line 3
> 
> +// +-----+---+-------------------+---+---+---+-+
> 
> +//
> 
> +// Page1Font
> 
> +// +---+---+---+---+---+---+---+---+---+---+---+
> 
> +// | Q | W | E | R | T | Y | U | I | O | P |<X|| Line 0
> 
> +// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> 
> +// | | A | S | D | F | G | H | J | K | L | F2| | Line 1
> 
> +// +-+---+---+---+---+---+---+---+---+---+---+-+
> 
> +// |Caps | Z | X | C | V | B | N | M |aU |Enter| Line 2
> 
> +// +-----+---+---+---+---+---+---+---+---+---+-+
> 
> +// | Esc |12#|       Space       |aL |aD |aR | | Line 3
> 
> +// +-----+---+-------------------+---+---+---+-+
> 
> +//
> 
> +// Page2Font
> 
> +// +---+---+---+---+---+---+---+---+---+---+---+
> 
> +// | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 |<X|| Line 0
> 
> +// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> 
> +// | |F1 |F2 |F3 |F4 |F5 |F6 |F7 |F8 |F9 |F10| | Line 1
> 
> +// +-+---+---+---+---+---+---+---+---+---+---+-+
> 
> +// |Shift| . | ; | ' | , | . | / |F11|F12|Enter| Line 2
> 
> +// +-----+---+---+---+---+---+---+---+---+---+-+
> 
> +// | Esc |12#|       Space       | \ | - | = | | Line 3
> 
> +// +-----+---+-------------------+---+---+---+-+
> 
> +//
> 
> +// Page3Font
> 
> +// +---+---+---+---+---+---+---+---+---+---+---+
> 
> +// | ! | @ | # | $ | % | ^ | & | * | ( | ) |<X|| Line 0
> 
> +// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> 
> +// | |F1 |F2 |F3 |F4 |F5 |F6 |F7 |F8 |F9 |F10| | Line 1
> 
> +// +-+---+---+---+---+---+---+---+---+---+---+-+
> 
> +// |Shift| ~ | : | " | < | > | ? |F11|F12|Enter| Line 2
> 
> +// +-----+---+---+---+---+---+---+---+---+---+-+
> 
> +// | Esc |12#|       Space       | | | _ | + | | Line 3
> 
> +// +-----+---+-------------------+---+---+---+-+
> 
> +//
> 
> +// 2.Screen Corner
> 
> +// Follow below design
> 
> +//   (1).\KeyboardLayout\SimpleIcon.bmp # Screen Corner A/B
> 
> +//   (2).\KeyboardLayout\FullIcon.bmp   # Screen Corner C/D
> 
> +// +-+------------------------------------+-+
> 
> +// |A|                                    |C|
> 
> +// +-+                                    +-+
> 
> +// |                                        |
> 
> +// |                                        |
> 
> +// |                                        |
> 
> +// |                                        |
> 
> +// |                                        |
> 
> +// |                                        |
> 
> +// +-+                                    +-+
> 
> +// |B|                                    |D|
> 
> +// +-+------------------------------------+-+
> 
> +//
> 
> +VK_STRUCT mFullKeyboardBody[] = {
> 
> +  // StartX  StartY  EndX    EndY     Page0Font            Page1Font            Page2Font
> Page3Font
> 
> +  // Line 0
> 
> +  {  0x0000, 0x0000, 0x0032, 0x0032, {L'q',                L'Q',                L'1',
> L'!'            }},
> 
> +  {  0x0032, 0x0000, 0x0064, 0x0032, {L'w',                L'W',                L'2',
> L'@'            }},
> 
> +  {  0x0064, 0x0000, 0x0096, 0x0032, {L'e',                L'E',                L'3',
> L'#'            }},
> 
> +  {  0x0096, 0x0000, 0x00C8, 0x0032, {L'r',                L'R',                L'4',
> L'$'            }},
> 
> +  {  0x00C8, 0x0000, 0x00FA, 0x0032, {L't',                L'T',                L'5',
> L'%'            }},
> 
> +  {  0x00FA, 0x0000, 0x012C, 0x0032, {L'y',                L'Y',                L'6',
> L'^'            }},
> 
> +  {  0x012C, 0x0000, 0x015E, 0x0032, {L'u',                L'U',                L'7',
> L'&'            }},
> 
> +  {  0x015E, 0x0000, 0x0190, 0x0032, {L'i',                L'I',                L'8',
> L'*'            }},
> 
> +  {  0x0190, 0x0000, 0x01C2, 0x0032, {L'o',                L'O',                L'9',
> L'('            }},
> 
> +  {  0x01C2, 0x0000, 0x01F4, 0x0032, {L'p',                L'P',                L'0',
> L')'            }},
> 
> +  {  0x01F4, 0x0000, 0x0226, 0x0032, {VkKeyBackspace,      VkKeyBackspace,
> VkKeyBackspace,      VkKeyBackspace  }},
> 
> +  // Line 1
> 
> +  {  0x0000, 0x0032, 0x0019, 0x0064, {VkKeyNull,           VkKeyNull,
> VkKeyNull,           VkKeyNull       }},
> 
> +  {  0x0019, 0x0032, 0x004B, 0x0064, {L'a',                L'A',                VkKeyF1,
> VkKeyF1         }},
> 
> +  {  0x004B, 0x0032, 0x007D, 0x0064, {L's',                L'S',                VkKeyF2,
> VkKeyF2         }},
> 
> +  {  0x007D, 0x0032, 0x00AF, 0x0064, {L'd',                L'D',                VkKeyF3,
> VkKeyF3         }},
> 
> +  {  0x00AF, 0x0032, 0x00E1, 0x0064, {L'f',                L'F',                VkKeyF4,
> VkKeyF4         }},
> 
> +  {  0x00E1, 0x0032, 0x0113, 0x0064, {L'g',                L'G',                VkKeyF5,
> VkKeyF5         }},
> 
> +  {  0x0113, 0x0032, 0x0145, 0x0064, {L'h',                L'H',                VkKeyF6,
> VkKeyF6         }},
> 
> +  {  0x0145, 0x0032, 0x0177, 0x0064, {L'j',                L'J',                VkKeyF7,
> VkKeyF7         }},
> 
> +  {  0x0177, 0x0032, 0x01A9, 0x0064, {L'k',                L'K',                VkKeyF8,
> VkKeyF8         }},
> 
> +  {  0x01A9, 0x0032, 0x01DB, 0x0064, {L'l',                L'L',                VkKeyF9,
> VkKeyF9         }},
> 
> +  {  0x01DB, 0x0032, 0x020D, 0x0064, {VkKeyF2,             VkKeyF2,
> VkKeyF10,            VkKeyF10        }},
> 
> +  // Line 2
> 
> +  {  0x0000, 0x0064, 0x004B, 0x0096, {VkKeyCapslock,       VkKeyCapslock,
> VkKeyShift,          VkKeyShift      }},
> 
> +  {  0x004B, 0x0064, 0x007D, 0x0096, {L'z',                L'Z',                L'`',
> L'~'            }},
> 
> +  {  0x007D, 0x0064, 0x00AF, 0x0096, {L'x',                L'X',                L';',
> L':'            }},
> 
> +  {  0x00AF, 0x0064, 0x00E1, 0x0096, {L'c',                L'C',                L'\'',
> L'"'            }},
> 
> +  {  0x00E1, 0x0064, 0x0113, 0x0096, {L'v',                L'V',                L',',
> L'<'            }},
> 
> +  {  0x0113, 0x0064, 0x0145, 0x0096, {L'b',                L'B',                L'.',
> L'>'            }},
> 
> +  {  0x0145, 0x0064, 0x0177, 0x0096, {L'n',                L'N',                L'/',
> L'?'            }},
> 
> +  {  0x0177, 0x0064, 0x01A9, 0x0096, {L'm',                L'M',                VkKeyF11,
> VkKeyF11        }},
> 
> +  {  0x01A9, 0x0064, 0x01DB, 0x0096, {VkKeyUp,             VkKeyUp,
> VkKeyF12,            VkKeyF12        }},
> 
> +  {  0x01DB, 0x0064, 0x0226, 0x0096, {VkKeyEnter,          VkKeyEnter,
> VkKeyEnter,          VkKeyEnter      }},
> 
> +  // Line 3
> 
> +  {  0x0000, 0x0096, 0x004B, 0x00C8, {VkKeyEsc,            VkKeyEsc,
> VkKeyEsc,            VkKeyEsc        }},
> 
> +  {  0x004B, 0x0096, 0x007D, 0x00C8, {VkKeyTwoPage,        VkKeyTwoPage,
> VkKeyTwoPage,        VkKeyTwoPage    }},
> 
> +  {  0x007D, 0x0096, 0x0177, 0x00C8, {L' ',                L' ',                L' ',                L'
> '            }},
> 
> +  {  0x0177, 0x0096, 0x01A9, 0x00C8, {VkKeyLeft,           VkKeyLeft,           L'\\',
> L'|'            }},
> 
> +  {  0x01A9, 0x0096, 0x01DB, 0x00C8, {VkKeyDown,           VkKeyDown,           L'-
> ',                L'_'            }},
> 
> +  {  0x01DB, 0x0096, 0x020D, 0x00C8, {VkKeyRight,          VkKeyRight,          L'=',
> L'+'            }},
> 
> +  // Screen Corner A
> 
> +  {  0x0000, 0x0000, 0x001E, 0x001E, {VkKeyTypeMaximum,
> VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum}},
> 
> +  // Screen Corner B
> 
> +  {  0x0000, 0x023A, 0x001E, 0x0258, {VkKeyTypeMaximum,
> VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum}},
> 
> +  // Screen Corner C
> 
> +  {  0x02E4, 0x0000, 0x0320, 0x001E, {VkKeyTypeMaximum,
> VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum}},
> 
> +  // Screen Corner D
> 
> +  {  0x02E4, 0x023A, 0x0320, 0x0258, {VkKeyTypeMaximum,
> VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum}}
> 
> +};
> 
> +
> 
> +//
> 
> +// 1.SimpleKeyboardBody
> 
> +// Follow below design
> 
> +//   (1).\KeyboardLayout\SimpleKeyboard.bmp
> 
> +// Based on keyboard's (startX, startY)
> 
> +// +-----+-----+
> 
> +// | Esc |Enter| Line 0
> 
> +// +-----+-----+
> 
> +// | Up  | Down| Line 1
> 
> +// +-----+-----+
> 
> +//
> 
> +// 2.Screen Corner
> 
> +// Follow below design
> 
> +//   (1).\KeyboardLayout\SimpleIcon.bmp # Screen Corner A/B
> 
> +//   (2).\KeyboardLayout\FullIcon.bmp   # Screen Corner C/D
> 
> +// +-+------------------------------------+-+
> 
> +// |A|                                    |C|
> 
> +// +-+                                    +-+
> 
> +// |                                        |
> 
> +// |                                        |
> 
> +// |                                        |
> 
> +// |                                        |
> 
> +// |                                        |
> 
> +// |                                        |
> 
> +// +-+                                    +-+
> 
> +// |B|                                    |D|
> 
> +// +-+------------------------------------+-+
> 
> +//
> 
> +VK_STRUCT mSimpleKeyboardBody[] = {
> 
> +  // StartX  StartY  EndX    EndY     Page0Font            Page1Font            Page2Font
> Page3Font
> 
> +  // Line 0
> 
> +  {  0x0000, 0x0000, 0x0032, 0x0032, {VkKeyEsc,            VkKeyEsc,
> VkKeyEsc,            VkKeyEsc        }},
> 
> +  {  0x0032, 0x0000, 0x0064, 0x0032, {VkKeyEnter,          VkKeyEnter,
> VkKeyEnter,          VkKeyEnter      }},
> 
> +  // Line 1
> 
> +  {  0x0000, 0x0032, 0x0032, 0x0064, {VkKeyUp,             VkKeyUp,
> VkKeyUp,             VkKeyUp         }},
> 
> +  {  0x0032, 0x0032, 0x0064, 0x0064, {VkKeyDown,           VkKeyDown,
> VkKeyDown,           VkKeyDown       }},
> 
> +  // Screen Corner A
> 
> +  {  0x0000, 0x0000, 0x001E, 0x001E, {VkKeyTypeMaximum,
> VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum}},
> 
> +  // Screen Corner B
> 
> +  {  0x0000, 0x023A, 0x001E, 0x0258, {VkKeyTypeMaximum,
> VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum}},
> 
> +  // Screen Corner C
> 
> +  {  0x02E4, 0x0000, 0x0320, 0x001E, {VkKeyTypeMaximum,
> VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum}},
> 
> +  // Screen Corner D
> 
> +  {  0x02E4, 0x023A, 0x0320, 0x0258, {VkKeyTypeMaximum,
> VkKeyTypeMaximum,    VkKeyTypeMaximum,    VkKeyTypeMaximum}}
> 
> +};
> 
> +
> 
> +/**
> 
> +  Modify the color of key if Shift or CapsLock is pressed.
> 
> +
> 
> +  @param[in]       VkContext   Address of an VK_CONTEXT structure.
> 
> +  @param[in, out]  BltBuffer   Address of a blt buffer.
> 
> +
> 
> +  @retval EFI_SUCCESS          Success for the function.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +ModifyShiftKeyColor (
> 
> +  IN     VK_CONTEXT                    *VkContext,
> 
> +  IN OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL **BltBuffer
> 
> +  )
> 
> +{
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *TempBltBuffer;
> 
> +  UINTN                         BltSize;
> 
> +  BOOLEAN                       IsPressed;
> 
> +
> 
> +  TempBltBuffer = *BltBuffer;
> 
> +  BltSize       = VkContext->VkBodyBltHeight * VkContext->VkBodyBltWidth;
> 
> +  IsPressed     = VkContext->PageNumber <= VkPage1 ?
> 
> +                  VkContext->IsCapsLockFlag :
> 
> +                  VkContext->IsShiftKeyFlag;
> 
> +
> 
> +  while (BltSize-- != 0) {
> 
> +    //
> 
> +    // Color gradient issue
> 
> +    //
> 
> +    if (((TempBltBuffer->Red - TempBltBuffer->Green) > 0x20) &&
> 
> +        ((TempBltBuffer->Red - TempBltBuffer->Blue)  > 0x20)) {
> 
> +      if (IsPressed) {
> 
> +        TempBltBuffer->Red   = 0;
> 
> +        TempBltBuffer->Green = 255;
> 
> +        TempBltBuffer->Blue  = 255;
> 
> +      } else {
> 
> +        TempBltBuffer->Red   = 255;
> 
> +        TempBltBuffer->Green = 255;
> 
> +        TempBltBuffer->Blue  = 255;
> 
> +      }
> 
> +    }
> 
> +    TempBltBuffer++;
> 
> +  }
> 
> +
> 
> +  return EFI_SUCCESS;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Make the keyboard transparent.
> 
> +
> 
> +  @param[in]      VkContext      Address of an VK_CONTEXT structure.
> 
> +  @param[in]      IsTransparent  TRUE for set keyboard transparent.
> 
> +  @param[in]      BltIn          Address of keyboard blt buffer.
> 
> +  @param[in, out] BltOut         Address of output blt buffer.
> 
> +                                 NULL will allocate it.
> 
> +
> 
> +  @retval EFI_SUCCESS            Success for the function.
> 
> +  @retval EFI_OUT_OF_RESOURCES   Allocate memory failed.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +MakeKeyboardTransparent (
> 
> +  IN     VK_CONTEXT                    *VkContext,
> 
> +  IN     BOOLEAN                       IsTransparent,
> 
> +  IN     EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltIn,
> 
> +  IN OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL **BltOut
> 
> +  )
> 
> +{
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Compound;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Keyboard;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Background;
> 
> +  UINTN                         BltSize;
> 
> +
> 
> +  if (*BltOut == NULL) {
> 
> +    *BltOut = AllocateZeroPool (VkContext->VkBodyBltSize);
> 
> +    if (*BltOut == NULL) {
> 
> +      return EFI_OUT_OF_RESOURCES;
> 
> +    }
> 
> +  }
> 
> +  Compound   = *BltOut;
> 
> +  Keyboard   = BltIn;
> 
> +  Background = VkContext->VkBodyBackgroundBltBuffer;
> 
> +  BltSize    = VkContext->VkBodyBltHeight * VkContext->VkBodyBltWidth;
> 
> +  while (BltSize-- != 0) {
> 
> +    if (IsTransparent) {
> 
> +      Compound->Red   = (Keyboard->Red * TRANSPARENCY_WEIGHT) / 100
> + (Background->Red * (100 - TRANSPARENCY_WEIGHT)) / 100;
> 
> +      Compound->Green = (Keyboard->Green * TRANSPARENCY_WEIGHT) /
> 100 + (Background->Green * (100 - TRANSPARENCY_WEIGHT)) / 100;
> 
> +      Compound->Blue  = (Keyboard->Blue * TRANSPARENCY_WEIGHT) / 100
> + (Background->Blue * (100 - TRANSPARENCY_WEIGHT)) / 100;
> 
> +    } else {
> 
> +      *Compound = *Keyboard;
> 
> +    }
> 
> +    Compound++;
> 
> +    Keyboard++;
> 
> +    Background++;
> 
> +  }
> 
> +
> 
> +  return EFI_SUCCESS;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Save the background blt buffer.
> 
> +
> 
> +  @param[in] VkContext           Address of an VK_CONTEXT structure.
> 
> +  @param[in] BltSize             Size of blt.
> 
> +
> 
> +  @retval EFI_SUCCESS            Success for the function.
> 
> +  @retval EFI_OUT_OF_RESOURCES   Allocate memory failed.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +SaveVkBodyBackgroundBltBuffer (
> 
> +  IN VK_CONTEXT *VkContext,
> 
> +  IN UINTN      BltSize
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS                    Status;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *CurrentBltBuffer;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *CurrentBltBufferSave;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *OldBltBuffer;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *OldBltBufferSave;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Compound;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Background;
> 
> +  UINTN                         Size;
> 
> +
> 
> +  CurrentBltBufferSave = NULL;
> 
> +  OldBltBufferSave     = NULL;
> 
> +
> 
> +  //
> 
> +  // Save original blt buffer first.
> 
> +  //
> 
> +  OldBltBuffer = AllocateZeroPool (VkContext->VkBodyBltSize);
> 
> +  if (OldBltBuffer == NULL) {
> 
> +    return EFI_OUT_OF_RESOURCES;
> 
> +  }
> 
> +  if (VkContext->VkBodyBackgroundBltBuffer != NULL) {
> 
> +    CopyMem (OldBltBuffer, VkContext->VkBodyBackgroundBltBuffer,
> VkContext->VkBodyBltSize);
> 
> +  }
> 
> +
> 
> +  if (VkContext->VkBodyBackgroundBltBuffer == NULL) {
> 
> +    VkContext->VkBodyBltSize = BltSize;
> 
> +    VkContext->VkBodyBackgroundBltBuffer = AllocateZeroPool (VkContext-
> >VkBodyBltSize);
> 
> +    ASSERT (VkContext->VkBodyBackgroundBltBuffer != NULL);
> 
> +    if (VkContext->VkBodyBackgroundBltBuffer == NULL) {
> 
> +      return EFI_OUT_OF_RESOURCES;
> 
> +    }
> 
> +  } else if (BltSize > VkContext->VkBodyBltSize) {
> 
> +    VkContext->VkBodyBltSize = BltSize;
> 
> +    FreePool (VkContext->VkBodyBackgroundBltBuffer);
> 
> +    VkContext->VkBodyBackgroundBltBuffer = NULL;
> 
> +    VkContext->VkBodyBackgroundBltBuffer = AllocateZeroPool (VkContext-
> >VkBodyBltSize);
> 
> +    ASSERT (VkContext->VkBodyBackgroundBltBuffer != NULL);
> 
> +    if (VkContext->VkBodyBackgroundBltBuffer == NULL) {
> 
> +      return EFI_OUT_OF_RESOURCES;
> 
> +    }
> 
> +  } else {
> 
> +    ZeroMem (VkContext->VkBodyBackgroundBltBuffer, VkContext-
> >VkBodyBltSize);
> 
> +  }
> 
> +
> 
> +  CurrentBltBuffer = NULL;
> 
> +  if (VkContext->IsBackgroundChanged == TRUE) {
> 
> +    //
> 
> +    // Background changed, merge current visioning blt buffer with old
> background blt buffer.
> 
> +    //
> 
> +    Compound   = VkContext->VkBodyCompoundBltBuffer;
> 
> +    Background = VkContext->VkBodyBackgroundBltBuffer;
> 
> +    CurrentBltBuffer = AllocateZeroPool (VkContext->VkBodyBltSize);
> 
> +    ASSERT (CurrentBltBuffer != NULL);
> 
> +    if (CurrentBltBuffer == NULL) {
> 
> +      return EFI_OUT_OF_RESOURCES;
> 
> +    }
> 
> +    Status = VkContext->GraphicsOutput->Blt (
> 
> +                                          VkContext->GraphicsOutput,
> 
> +                                          CurrentBltBuffer,
> 
> +                                          EfiBltVideoToBltBuffer,
> 
> +                                          VkContext->VkBodyBltStartX,
> 
> +                                          VkContext->VkBodyBltStartY,
> 
> +                                          0,
> 
> +                                          0,
> 
> +                                          VkContext->VkBodyBltWidth,
> 
> +                                          VkContext->VkBodyBltHeight,
> 
> +                                          VkContext->VkBodyBltWidth * sizeof
> (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
> 
> +                                          );
> 
> +    CurrentBltBufferSave = CurrentBltBuffer;
> 
> +    OldBltBufferSave = OldBltBuffer;
> 
> +    Size = VkContext->VkBodyBltHeight * VkContext->VkBodyBltWidth;
> 
> +    while (Size-- != 0) {
> 
> +      if ((Compound->Red   != CurrentBltBuffer->Red) ||
> 
> +          (Compound->Green != CurrentBltBuffer->Green) ||
> 
> +          (Compound->Blue  != CurrentBltBuffer->Blue)) {
> 
> +        *Background = *CurrentBltBuffer;
> 
> +      } else {
> 
> +        *Background = *OldBltBuffer;
> 
> +      }
> 
> +      Compound++;
> 
> +      Background++;
> 
> +      CurrentBltBuffer++;
> 
> +      OldBltBuffer++;
> 
> +    }
> 
> +  } else {
> 
> +    //
> 
> +    // Background NOT changed, save it to VkBodyBackgroundBltBuffer
> directly.
> 
> +    //
> 
> +    Status = VkContext->GraphicsOutput->Blt (
> 
> +                                          VkContext->GraphicsOutput,
> 
> +                                          VkContext->VkBodyBackgroundBltBuffer,
> 
> +                                          EfiBltVideoToBltBuffer,
> 
> +                                          VkContext->VkBodyBltStartX,
> 
> +                                          VkContext->VkBodyBltStartY,
> 
> +                                          0,
> 
> +                                          0,
> 
> +                                          VkContext->VkBodyBltWidth,
> 
> +                                          VkContext->VkBodyBltHeight,
> 
> +                                          VkContext->VkBodyBltWidth * sizeof
> (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
> 
> +                                          );
> 
> +  }
> 
> +
> 
> +  if (CurrentBltBufferSave != NULL) {
> 
> +    FreePool (CurrentBltBufferSave);
> 
> +  }
> 
> +  if (OldBltBufferSave != NULL) {
> 
> +    FreePool (OldBltBufferSave);
> 
> +  }
> 
> +
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Restore the background blt buffer.
> 
> +
> 
> +  @param[in] VkContext           Address of an VK_CONTEXT structure.
> 
> +
> 
> +  @retval EFI_SUCCESS            Success for the function.
> 
> +  @retval EFI_UNSUPPORTED        Input blt buffer is NULL.
> 
> +  @retval Others                 An unexpected error occurred.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +RestoreVkBodyBackgroundBltBuffer (
> 
> +  IN VK_CONTEXT *VkContext
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS Status;
> 
> +
> 
> +  if (VkContext->VkBodyBackgroundBltBuffer == NULL) {
> 
> +    return EFI_UNSUPPORTED;
> 
> +  }
> 
> +
> 
> +  Status = VkContext->GraphicsOutput->Blt (
> 
> +                                        VkContext->GraphicsOutput,
> 
> +                                        VkContext->VkBodyBackgroundBltBuffer,
> 
> +                                        EfiBltBufferToVideo,
> 
> +                                        0,
> 
> +                                        0,
> 
> +                                        VkContext->VkBodyBltStartX,
> 
> +                                        VkContext->VkBodyBltStartY,
> 
> +                                        VkContext->VkBodyBltWidth,
> 
> +                                        VkContext->VkBodyBltHeight,
> 
> +                                        VkContext->VkBodyBltWidth * sizeof
> (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
> 
> +                                        );
> 
> +
> 
> +  FreePool (VkContext->VkBodyBackgroundBltBuffer);
> 
> +  VkContext->VkBodyBackgroundBltBuffer = NULL;
> 
> +
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Set the position of character.
> 
> +
> 
> +  @param[in] VkContext      Address of an VK_CONTEXT structure.
> 
> +  @param[in] DestX          X position.
> 
> +  @param[in] DestY          Y position.
> 
> +
> 
> +  @retval EFI_SUCCESS       Success for the function.
> 
> +  @retval Others            An unexpected error occurred.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +SetCharacterPosition (
> 
> +  IN VK_CONTEXT *VkContext,
> 
> +  IN UINT32     DestX,
> 
> +  IN UINT32     DestY
> 
> +  )
> 
> +{
> 
> +  UINTN     Index;
> 
> +  VK_STRUCT *KeyArryPtr;
> 
> +  UINT32    KeyArrySize;
> 
> +
> 
> +  switch (VkContext->TargetKeyboardDisplay) {
> 
> +  case VkDisplayAttributeSimpleTop:
> 
> +  case VkDisplayAttributeSimpleBottom:
> 
> +    KeyArryPtr  = mSimpleKeyboardBody;
> 
> +    KeyArrySize = DIM (mSimpleKeyboardBody);
> 
> +    break;
> 
> +
> 
> +  case VkDisplayAttributeFullBottom:
> 
> +  case VkDisplayAttributeFullTop:
> 
> +    KeyArryPtr = mFullKeyboardBody;
> 
> +    KeyArrySize = DIM (mFullKeyboardBody);
> 
> +    break;
> 
> +
> 
> +  case VkDisplayAttributeNone:
> 
> +    KeyArryPtr = mFullKeyboardBody;
> 
> +    KeyArrySize = DIM (mFullKeyboardBody);
> 
> +    break;
> 
> +
> 
> +  default:
> 
> +    return EFI_UNSUPPORTED;
> 
> +  }
> 
> +
> 
> +  for (Index = 0; Index < KeyArrySize; Index++) {
> 
> +    VkContext->KeyboardBodyPtr[Index] = KeyArryPtr[Index];
> 
> +  }
> 
> +  VkContext->NumOfKeysInfo = KeyArrySize;
> 
> +
> 
> +  for (Index = 0; Index < (VkContext->NumOfKeysInfo - 4); Index++) {
> 
> +    VkContext->KeyboardBodyPtr[Index].DisStartX += (UINT16)DestX;
> 
> +    VkContext->KeyboardBodyPtr[Index].DisStartY += (UINT16)DestY;
> 
> +    VkContext->KeyboardBodyPtr[Index].DisEndX   += (UINT16)DestX;
> 
> +    VkContext->KeyboardBodyPtr[Index].DisEndY   += (UINT16)DestY;
> 
> +  }
> 
> +
> 
> +  return EFI_SUCCESS;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Save the icon background blt buffer.
> 
> +
> 
> +  @param[in] VkContext      Address of an VK_CONTEXT structure.
> 
> +  @param[in] IconType       The icon type.
> 
> +
> 
> +  @retval EFI_SUCCESS            Success for the function.
> 
> +  @retval EFI_OUT_OF_RESOURCES   Allocate memory failed.
> 
> +  @retval Others                 An unexpected error occurred.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +SaveVkIconBackgroundBltBuffer (
> 
> +  IN VK_CONTEXT           *VkContext,
> 
> +  IN VK_DISPLAY_ATTRIBUTE IconType
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS                    Status;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *GraphicBlt;
> 
> +  UINTN                         BltSize;
> 
> +  UINTN                         Height;
> 
> +  UINTN                         Width;
> 
> +  INTN                          StartX;
> 
> +  INTN                          StartY;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *TempIconBackBuffer;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *IconBackBuffer;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Compound;
> 
> +  UINTN                         Size;
> 
> +  BOOLEAN                       SaveCursor;
> 
> +
> 
> +  Status             = EFI_SUCCESS;
> 
> +  StartX             = 0;
> 
> +  StartY             = 0;
> 
> +  TempIconBackBuffer = NULL;
> 
> +  IconBackBuffer     = NULL;
> 
> +  Compound           = NULL;
> 
> +
> 
> +  if ((IconType == VkDisplayAttributeFullTop) ||
> 
> +      (IconType == VkDisplayAttributeSimpleTop)) {
> 
> +    return EFI_SUCCESS;
> 
> +  }
> 
> +
> 
> +  SaveCursor = gST->ConOut->Mode->CursorVisible;
> 
> +  gST->ConOut->EnableCursor (gST->ConOut, FALSE);
> 
> +
> 
> +  if (IconType == VkDisplayAttributeFullBottom) {
> 
> +    GraphicBlt = VkContext->FullIcon->Bitmap;
> 
> +    BltSize    = VkContext->FullIcon->Height * VkContext->FullIcon->Width *
> sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL);
> 
> +    Height     = VkContext->FullIcon->Height;
> 
> +    Width      = VkContext->FullIcon->Width;
> 
> +    StartX     = VkContext->FullIconBackStartX;
> 
> +    StartY     = VkContext->FullIconBackStartY;
> 
> +  } else if (IconType == VkDisplayAttributeSimpleBottom) {
> 
> +    GraphicBlt = VkContext->SmallIcon->Bitmap;
> 
> +    BltSize    = VkContext->SmallIcon->Height * VkContext->SmallIcon-
> >Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL);
> 
> +    Height     = VkContext->SmallIcon->Height;
> 
> +    Width      = VkContext->SmallIcon->Width;
> 
> +    StartX     = VkContext->SimIconBackStartX;
> 
> +    StartY     = VkContext->SimIconBackStartY;
> 
> +  } else {
> 
> +    gST->ConOut->EnableCursor (gST->ConOut, SaveCursor);
> 
> +    return EFI_UNSUPPORTED;
> 
> +  }
> 
> +
> 
> +  IconBackBuffer = AllocateZeroPool (BltSize);
> 
> +  if (IconBackBuffer == NULL) {
> 
> +    gST->ConOut->EnableCursor (gST->ConOut, SaveCursor);
> 
> +    return EFI_OUT_OF_RESOURCES;
> 
> +  }
> 
> +  TempIconBackBuffer = IconBackBuffer;
> 
> +  Status = VkContext->GraphicsOutput->Blt (
> 
> +                                        VkContext->GraphicsOutput,
> 
> +                                        IconBackBuffer,
> 
> +                                        EfiBltVideoToBltBuffer,
> 
> +                                        StartX,
> 
> +                                        StartY,
> 
> +                                        0,
> 
> +                                        0,
> 
> +                                        Width,
> 
> +                                        Height,
> 
> +                                        Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
> 
> +                                        );
> 
> +
> 
> +  if (IconType == VkDisplayAttributeFullBottom) {
> 
> +    //
> 
> +    // Store full icon background framebuffer
> 
> +    //
> 
> +    VkContext->FullIconBackHeight = Height;
> 
> +    VkContext->FullIconBackWidth  = Width;
> 
> +    if (VkContext->FullIconUpdatedFlag == FALSE) {
> 
> +      //
> 
> +      // No icon draw, save the buffer directly.
> 
> +      //
> 
> +      if (VkContext->FullIconBackBuffer == NULL) {
> 
> +        VkContext->FullIconBackBuffer = AllocateZeroPool (BltSize);
> 
> +        VkContext->FullIconBackSize = BltSize;
> 
> +      }
> 
> +      CopyMem (VkContext->FullIconBackBuffer, IconBackBuffer, BltSize);
> 
> +      VkContext->FullIconUpdatedFlag = TRUE;
> 
> +    } else {
> 
> +      if (CompareMem (VkContext->FullIconBackBuffer, IconBackBuffer,
> BltSize) != 0) {
> 
> +        Compound = VkContext->FullIconBackBuffer;
> 
> +        Size = Height * Width;
> 
> +        while (Size-- != 0) {
> 
> +          if ((GraphicBlt->Red   != IconBackBuffer->Red) ||
> 
> +              (GraphicBlt->Green != IconBackBuffer->Green) ||
> 
> +              (GraphicBlt->Blue  != IconBackBuffer->Blue)) {
> 
> +            *Compound = *IconBackBuffer;
> 
> +          }
> 
> +          Compound++;
> 
> +          GraphicBlt++;
> 
> +          IconBackBuffer++;
> 
> +        }
> 
> +      }
> 
> +    }
> 
> +  } else if (IconType == VkDisplayAttributeSimpleBottom) {
> 
> +    //
> 
> +    // Store simple icon background framebuffer
> 
> +    //
> 
> +    VkContext->SimIconBackHeight = Height;
> 
> +    VkContext->SimIconBackWidth  = Width;
> 
> +    if (VkContext->SimIconUpdatedFlag == FALSE) {
> 
> +      //
> 
> +      // No icon draw, save the buffer directly.
> 
> +      //
> 
> +      if (VkContext->SimIconBackBuffer == NULL) {
> 
> +        VkContext->SimIconBackBuffer = AllocateZeroPool (BltSize);
> 
> +        VkContext->SimIconBackSize = BltSize;
> 
> +      }
> 
> +      CopyMem (VkContext->SimIconBackBuffer, IconBackBuffer, BltSize);
> 
> +      VkContext->SimIconUpdatedFlag = TRUE;
> 
> +    } else {
> 
> +      if (CompareMem (VkContext->SimIconBackBuffer, IconBackBuffer,
> BltSize) != 0) {
> 
> +        Compound = VkContext->SimIconBackBuffer;
> 
> +        Size = Height * Width;
> 
> +        while (Size-- != 0) {
> 
> +          if ((GraphicBlt->Red   != IconBackBuffer->Red) ||
> 
> +              (GraphicBlt->Green != IconBackBuffer->Green) ||
> 
> +              (GraphicBlt->Blue  != IconBackBuffer->Blue)) {
> 
> +            *Compound = *IconBackBuffer;
> 
> +          }
> 
> +          Compound++;
> 
> +          GraphicBlt++;
> 
> +          IconBackBuffer++;
> 
> +        }
> 
> +      }
> 
> +    }
> 
> +  }
> 
> +
> 
> +  if (TempIconBackBuffer != NULL)  FreePool (TempIconBackBuffer);
> 
> +
> 
> +  gST->ConOut->EnableCursor (gST->ConOut, SaveCursor);
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Use to draw the keyboard icon.
> 
> +
> 
> +  @param[in] VkContext  Pointer to virtual keyboard's context
> 
> +  @param[in] VkImage    Image of keyboard to display on the screen.
> 
> +  @param[in] Attribute  Attribute of keyboard to display on the screen.
> 
> +
> 
> +  @retval EFI_SUCCESS           ConsoleControl has been flipped to graphics
> and keyboard icon displayed.
> 
> +  @retval EFI_UNSUPPORTED       KeyboardFile not found
> 
> +  @retval EFI_INVALID_PARAMETER Attribute is unknown.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +DrawVkIcon (
> 
> +  IN VK_CONTEXT                    *VkContext,
> 
> +  IN EFI_IMAGE_INPUT               *VkImage,
> 
> +  IN VK_DISPLAY_ATTRIBUTE          Attribute
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS                    Status;
> 
> +  UINT32                        SizeOfX;
> 
> +  UINT32                        SizeOfY;
> 
> +  INTN                          DestX;
> 
> +  INTN                          DestY;
> 
> +  UINTN                         CoordinateX;
> 
> +  UINTN                         CoordinateY;
> 
> +  EFI_GRAPHICS_OUTPUT_PROTOCOL  *GraphicsOutput;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Blt;
> 
> +  UINTN                         BltSize;
> 
> +  UINTN                         Height;
> 
> +  UINTN                         Width;
> 
> +
> 
> +  Status         = EFI_SUCCESS;
> 
> +  GraphicsOutput = VkContext->GraphicsOutput;
> 
> +  SizeOfX        = GraphicsOutput->Mode->Info->HorizontalResolution;
> 
> +  SizeOfY        = GraphicsOutput->Mode->Info->VerticalResolution;
> 
> +  CoordinateX    = 0;
> 
> +  CoordinateY    = 0;
> 
> +  Height         = VkImage->Height;
> 
> +  Width          = VkImage->Width;
> 
> +  Blt            = VkImage->Bitmap;
> 
> +  BltSize        = sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL) * (UINT32)(Width
> * Height);
> 
> +
> 
> +  //
> 
> +  // Calculate the display position according to Attribute.
> 
> +  //
> 
> +  switch (Attribute) {
> 
> +  case VkDisplayAttributeSimpleTop:
> 
> +    DestX = CoordinateX;
> 
> +    DestY = CoordinateY;
> 
> +    break;
> 
> +
> 
> +  case VkDisplayAttributeFullTop:
> 
> +    DestX = (SizeOfX - Width - CoordinateX);
> 
> +    DestY = CoordinateY;;
> 
> +    break;
> 
> +
> 
> +  case VkDisplayAttributeFullBottom:
> 
> +    DestX                         = (SizeOfX - Width - CoordinateX);
> 
> +    DestY                         = (SizeOfY - Height - CoordinateY);
> 
> +    VkContext->FullIconBackStartX = DestX;
> 
> +    VkContext->FullIconBackStartY = DestY;
> 
> +    break;
> 
> +
> 
> +  case VkDisplayAttributeSimpleBottom:
> 
> +    DestX = CoordinateX;
> 
> +    DestY = (SizeOfY - Height - CoordinateY);
> 
> +
> 
> +    //
> 
> +    // Save to check icon/screen cleared
> 
> +    //
> 
> +    if (VkContext->IconBltBuffer == NULL) {
> 
> +      VkContext->IconBltSize   = BltSize;
> 
> +      VkContext->IconBltWidth  = Width;
> 
> +      VkContext->IconBltHeight = Height;
> 
> +      VkContext->IconBltBuffer = AllocateZeroPool (BltSize);
> 
> +    }
> 
> +    CopyMem (VkContext->IconBltBuffer, Blt, VkContext->IconBltSize);
> 
> +
> 
> +    VkContext->SimIconBackStartX = DestX;
> 
> +    VkContext->SimIconBackStartY = DestY;
> 
> +    break;
> 
> +
> 
> +  case VkDisplayAttributeNone:
> 
> +    return EFI_SUCCESS;
> 
> +
> 
> +  default:
> 
> +    return EFI_INVALID_PARAMETER;
> 
> +  }
> 
> +
> 
> +  if ((DestX >= 0) && (DestY >= 0)) {
> 
> +    //
> 
> +    // Store icon background framebuffer
> 
> +    //
> 
> +    SaveVkIconBackgroundBltBuffer (VkContext, Attribute);
> 
> +    Status = GraphicsOutput->Blt (
> 
> +                               GraphicsOutput,
> 
> +                               Blt,
> 
> +                               EfiBltBufferToVideo,
> 
> +                               0,
> 
> +                               0,
> 
> +                               (UINTN) DestX,
> 
> +                               (UINTN) DestY,
> 
> +                               Width,
> 
> +                               Height,
> 
> +                               Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
> 
> +                               );
> 
> +  }
> 
> +
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Use to draw the keyboard.
> 
> +
> 
> +  @param[in] VkContext  Pointer to virtual keyboard's context
> 
> +  @param[in] VkImage    Image of keyboard to display on the screen.
> 
> +  @param[in] Attribute  Attribute of keyboard to display on the screen.
> 
> +
> 
> +  @retval EFI_SUCCESS           ConsoleControl has been flipped to graphics
> and keyboard displayed.
> 
> +  @retval EFI_UNSUPPORTED       KeyboardFile not found
> 
> +  @retval EFI_INVALID_PARAMETER Attribute is unknown.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +DrawVkBody (
> 
> +  IN VK_CONTEXT                    *VkContext,
> 
> +  IN EFI_IMAGE_INPUT               *VkImage,
> 
> +  IN VK_DISPLAY_ATTRIBUTE          Attribute
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS                    Status;
> 
> +  UINT32                        SizeOfX;
> 
> +  UINT32                        SizeOfY;
> 
> +  INTN                          DestX;
> 
> +  INTN                          DestY;
> 
> +  UINTN                         BltSize;
> 
> +  UINTN                         Height;
> 
> +  UINTN                         Width;
> 
> +  UINTN                         CoordinateY;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltIn;
> 
> +  EFI_GRAPHICS_OUTPUT_PROTOCOL  *GraphicsOutput;
> 
> +
> 
> +  Status         = EFI_SUCCESS;
> 
> +  GraphicsOutput = VkContext->GraphicsOutput;
> 
> +  SizeOfX        = GraphicsOutput->Mode->Info->HorizontalResolution;
> 
> +  SizeOfY        = GraphicsOutput->Mode->Info->VerticalResolution;
> 
> +  CoordinateY    = 0;
> 
> +  Height         = VkImage->Height;
> 
> +  Width          = VkImage->Width;
> 
> +  BltSize        = sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL) * (UINT32)(Width
> * Height);
> 
> +  BltIn          = AllocateCopyPool (BltSize, VkImage->Bitmap);
> 
> +
> 
> +  if (BltIn == NULL) {
> 
> +    return EFI_OUT_OF_RESOURCES;
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Calculate the display position according to Attribute.
> 
> +  //
> 
> +  switch (Attribute) {
> 
> +  case VkDisplayAttributeSimpleTop:
> 
> +    DestX = ((SizeOfX / 2) - Width) / 4;
> 
> +    DestY = CoordinateY;
> 
> +    VkContext->CurrentKeyboardDisplay = VkDisplayAttributeSimpleTop;
> 
> +    break;
> 
> +
> 
> +  case VkDisplayAttributeSimpleBottom:
> 
> +    DestX = ((SizeOfX / 2) - Width) / 4;
> 
> +    DestY = (SizeOfY - Height - CoordinateY);
> 
> +    VkContext->CurrentKeyboardDisplay = VkDisplayAttributeSimpleBottom;
> 
> +    break;
> 
> +
> 
> +  case VkDisplayAttributeFullTop:
> 
> +    DestX = (SizeOfX - Width) / 2;
> 
> +    DestY = CoordinateY;
> 
> +    VkContext->CurrentKeyboardDisplay = VkDisplayAttributeFullTop;
> 
> +    break;
> 
> +
> 
> +  case VkDisplayAttributeFullBottom:
> 
> +    DestX = (SizeOfX - Width) / 2;
> 
> +    DestY = (SizeOfY - Height - CoordinateY);
> 
> +    VkContext->CurrentKeyboardDisplay = VkDisplayAttributeFullBottom;
> 
> +    break;
> 
> +
> 
> +  case VkDisplayAttributeNone:
> 
> +    VkContext->CurrentKeyboardDisplay = VkDisplayAttributeNone;
> 
> +    goto DVKBODY_Exit;
> 
> +
> 
> +  default:
> 
> +    VkContext->CurrentKeyboardDisplay = VkDisplayAttributeNone;
> 
> +    Status = EFI_INVALID_PARAMETER;
> 
> +    goto DVKBODY_Exit;
> 
> +  }
> 
> +  if ((DestX >= 0) && (DestY >= 0)) {
> 
> +    SetCharacterPosition (VkContext, (UINT32)DestX, (UINT32)DestY);
> 
> +
> 
> +    //
> 
> +    // Store current framebuffer
> 
> +    //
> 
> +    VkContext->VkBodyBltStartX = DestX;
> 
> +    VkContext->VkBodyBltStartY = DestY;
> 
> +    VkContext->VkBodyBltHeight = Height;
> 
> +    VkContext->VkBodyBltWidth  = Width;
> 
> +    SaveVkBodyBackgroundBltBuffer (VkContext, BltSize);
> 
> +
> 
> +    //
> 
> +    // Free compound buffer first.
> 
> +    //
> 
> +    if (VkContext->VkBodyCompoundBltBuffer != NULL) {
> 
> +      FreePool (VkContext->VkBodyCompoundBltBuffer);
> 
> +    }
> 
> +    VkContext->VkBodyCompoundBltBuffer = NULL;
> 
> +    ModifyShiftKeyColor (VkContext, &BltIn);
> 
> +    MakeKeyboardTransparent (VkContext, TRUE, BltIn, &(VkContext-
> >VkBodyCompoundBltBuffer));
> 
> +
> 
> +    //
> 
> +    // Draw keyboard body
> 
> +    //
> 
> +    Status = GraphicsOutput->Blt (
> 
> +                               GraphicsOutput,
> 
> +                               VkContext->VkBodyCompoundBltBuffer,
> 
> +                               EfiBltBufferToVideo,
> 
> +                               0,
> 
> +                               0,
> 
> +                               (UINTN) DestX,
> 
> +                               (UINTN) DestY,
> 
> +                               Width,
> 
> +                               Height,
> 
> +                               Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
> 
> +                               );
> 
> +  }
> 
> +
> 
> +
> 
> +DVKBODY_Exit:
> 
> +  if (BltIn != NULL) {
> 
> +    FreePool (BltIn);
> 
> +  }
> 
> +
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Clear the keyboard body
> 
> +
> 
> +  @param  VkContext             Code context.
> 
> +
> 
> +  @retval EFI_SUCCESS           Clear rectangle is done.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +HideVkBody (
> 
> +  IN VK_CONTEXT *VkContext
> 
> +  )
> 
> +{
> 
> +  RestoreVkBodyBackgroundBltBuffer (VkContext);
> 
> +  VkContext->CurrentKeyboardDisplay = VkDisplayAttributeNone;
> 
> +
> 
> +  return EFI_SUCCESS;
> 
> +}
> 
> +
> 
> +
> 
> +/**
> 
> +  Clear the keyboard icon
> 
> +
> 
> +  @param  VkContext             Code context.
> 
> +
> 
> +  @retval EFI_SUCCESS           Clear rectangle is done.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +HideVkIcon (
> 
> +  IN VK_CONTEXT *VkContext
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS                    Status;
> 
> +
> 
> +  if ((VkContext->FullIconBackBuffer == NULL) || (VkContext-
> >SimIconBackBuffer == NULL)) {
> 
> +    return EFI_UNSUPPORTED;
> 
> +  }
> 
> +
> 
> +  if ((VkContext->FullIconUpdatedFlag == FALSE) || (VkContext-
> >SimIconUpdatedFlag == FALSE)) {
> 
> +    return EFI_UNSUPPORTED;
> 
> +  }
> 
> +  Status = VkContext->GraphicsOutput->Blt (
> 
> +                                        VkContext->GraphicsOutput,
> 
> +                                        VkContext->FullIconBackBuffer,
> 
> +                                        EfiBltBufferToVideo,
> 
> +                                        0,
> 
> +                                        0,
> 
> +                                        VkContext->FullIconBackStartX,
> 
> +                                        VkContext->FullIconBackStartY,
> 
> +                                        VkContext->FullIconBackWidth,
> 
> +                                        VkContext->FullIconBackHeight,
> 
> +                                        VkContext->FullIconBackWidth * sizeof
> (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
> 
> +                                        );
> 
> +
> 
> +  ZeroMem (VkContext->FullIconBackBuffer, VkContext->FullIconBackSize);
> 
> +  VkContext->FullIconUpdatedFlag = FALSE;
> 
> +
> 
> +
> 
> +  Status = VkContext->GraphicsOutput->Blt (
> 
> +                                        VkContext->GraphicsOutput,
> 
> +                                        VkContext->SimIconBackBuffer,
> 
> +                                        EfiBltBufferToVideo,
> 
> +                                        0,
> 
> +                                        0,
> 
> +                                        VkContext->SimIconBackStartX,
> 
> +                                        VkContext->SimIconBackStartY,
> 
> +                                        VkContext->SimIconBackWidth,
> 
> +                                        VkContext->SimIconBackHeight,
> 
> +                                        VkContext->SimIconBackWidth * sizeof
> (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
> 
> +                                        );
> 
> +  if (!EFI_ERROR (Status)) {
> 
> +    if (VkContext->ScreenCheckBuffer == NULL) {
> 
> +      VkContext->ScreenCheckBufferSize = VkContext->SimIconBackHeight *
> 
> +                                         VkContext->SimIconBackWidth *
> 
> +                                         sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL);
> 
> +      VkContext->ScreenCheckBuffer = AllocateZeroPool (VkContext-
> >ScreenCheckBufferSize);
> 
> +    }
> 
> +
> 
> +    CopyMem (
> 
> +      VkContext->ScreenCheckBuffer,
> 
> +      VkContext->SimIconBackBuffer,
> 
> +      (VkContext->SimIconBackHeight * VkContext->SimIconBackWidth *
> sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL))
> 
> +      );
> 
> +  }
> 
> +  ZeroMem (VkContext->SimIconBackBuffer, VkContext->SimIconBackSize);
> 
> +  VkContext->SimIconUpdatedFlag = FALSE;
> 
> +
> 
> +  return EFI_SUCCESS;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Draw key board on the display
> 
> +
> 
> +  @param[in] VkContext          Graphic Protocol for draw the alphabet.
> 
> +
> 
> +  @retval EFI_SUCCESS           Draw keyboard was done.
> 
> +  @retval EFI_UNSUPPORTED       Did not get key mapping table.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +DrawKeyboardLayout (
> 
> +  IN VK_CONTEXT *VkContext
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS Status;
> 
> +  if (!VkContext->IsIconShowed) {
> 
> +    Status = DrawVkIcon (VkContext, VkContext->SmallIcon,
> VkDisplayAttributeSimpleTop);
> 
> +    ASSERT_EFI_ERROR (Status);
> 
> +
> 
> +    Status = DrawVkIcon (VkContext, VkContext->SmallIcon,
> VkDisplayAttributeSimpleBottom);
> 
> +    ASSERT_EFI_ERROR (Status);
> 
> +
> 
> +    Status = DrawVkIcon (VkContext, VkContext->FullIcon,
> VkDisplayAttributeFullTop);
> 
> +    ASSERT_EFI_ERROR (Status);
> 
> +
> 
> +    Status = DrawVkIcon (VkContext, VkContext->FullIcon,
> VkDisplayAttributeFullBottom);
> 
> +    ASSERT_EFI_ERROR (Status);
> 
> +    VkContext->IsIconShowed = TRUE;
> 
> +  }
> 
> +
> 
> +  if (VkContext->TargetKeyboardDisplay != VkContext-
> >CurrentKeyboardDisplay) {
> 
> +    switch (VkContext->TargetKeyboardDisplay) {
> 
> +    case VkDisplayAttributeSimpleTop:
> 
> +    case VkDisplayAttributeSimpleBottom:
> 
> +      DrawVkBody (VkContext, VkContext->SimKeyBody, VkContext-
> >TargetKeyboardDisplay);
> 
> +      break;
> 
> +
> 
> +    case VkDisplayAttributeFullTop:
> 
> +    case VkDisplayAttributeFullBottom:
> 
> +      if (VkContext->PageNumber <= VkPage1) {
> 
> +        DrawVkBody (VkContext, VkContext->CapLeKeyBody, VkContext-
> >TargetKeyboardDisplay);
> 
> +      } else {
> 
> +        DrawVkBody (VkContext, VkContext->DigKeyBody, VkContext-
> >TargetKeyboardDisplay);
> 
> +      }
> 
> +
> 
> +    case VkDisplayAttributeNone:
> 
> +      break;
> 
> +
> 
> +    default:
> 
> +      break;
> 
> +    }
> 
> +  }
> 
> +
> 
> +  return EFI_SUCCESS;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Set the keyboard layout.
> 
> +
> 
> +  @param[in] VkContext          Graphic Protocol for draw the alphabet.
> 
> +  @param[in] Index              The layout selected.
> 
> +
> 
> +  @retval EFI_SUCCESS           Draw keyboard was done.
> 
> +  @retval Others                An unexpected error occurred.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +KeyboardLayoutHandler (
> 
> +  IN VK_CONTEXT *VkContext,
> 
> +  IN UINT32     Index
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS Status;
> 
> +
> 
> +  Status = EFI_SUCCESS;
> 
> +
> 
> +  if (Index == (VkContext->NumOfKeysInfo - 4)) {
> 
> +    //
> 
> +    // Touch the LeftTop icon
> 
> +    //
> 
> +    if (VkContext->CurrentKeyboardDisplay == VkDisplayAttributeSimpleTop)
> {
> 
> +      VkContext->TargetKeyboardDisplay = VkDisplayAttributeNone;
> 
> +    } else {
> 
> +      VkContext->TargetKeyboardDisplay = VkDisplayAttributeSimpleTop;
> 
> +    }
> 
> +  } else if (Index == (VkContext->NumOfKeysInfo - 3)) {
> 
> +    //
> 
> +    // Touch the LeftBottom icon
> 
> +    //
> 
> +    if (VkContext->CurrentKeyboardDisplay ==
> VkDisplayAttributeSimpleBottom) {
> 
> +      VkContext->TargetKeyboardDisplay = VkDisplayAttributeNone;
> 
> +    } else {
> 
> +      VkContext->TargetKeyboardDisplay = VkDisplayAttributeSimpleBottom;
> 
> +    }
> 
> +  } else if (Index == (VkContext->NumOfKeysInfo - 2)) {
> 
> +    //
> 
> +    // Touch the RightTop icon
> 
> +    //
> 
> +    if (VkContext->CurrentKeyboardDisplay == VkDisplayAttributeFullTop) {
> 
> +      VkContext->TargetKeyboardDisplay = VkDisplayAttributeNone;
> 
> +    } else {
> 
> +      VkContext->TargetKeyboardDisplay = VkDisplayAttributeFullTop;
> 
> +    }
> 
> +  } else {
> 
> +    //
> 
> +    // Touch the RightBottom icon
> 
> +    //
> 
> +    if (VkContext->CurrentKeyboardDisplay == VkDisplayAttributeFullBottom)
> {
> 
> +      VkContext->TargetKeyboardDisplay = VkDisplayAttributeNone;
> 
> +    } else {
> 
> +      VkContext->TargetKeyboardDisplay = VkDisplayAttributeFullBottom;
> 
> +    }
> 
> +  }
> 
> +
> 
> +  if (VkContext->TargetKeyboardDisplay == VkDisplayAttributeNone) {
> 
> +    //
> 
> +    // Just hide the current keyboard
> 
> +    //
> 
> +    HideVkBody (VkContext);
> 
> +    VkContext->KeyTouchedTimeOut = VK_REPEAT_TIMEOUT;
> 
> +
> 
> +  } else {
> 
> +    //
> 
> +    // If current keyboard status is NOT none,
> 
> +    // hide current keyboard first and then draw the target keyboard
> 
> +    //
> 
> +    if (VkContext->CurrentKeyboardDisplay != VkDisplayAttributeNone) {
> 
> +      HideVkBody (VkContext);
> 
> +    }
> 
> +    Status = DrawKeyboardLayout (VkContext);
> 
> +  }
> 
> +
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  This routine is used to check if icon has been cleared.
> 
> +
> 
> +  @param[in] VkContext  Pointer to virtual keyboard's context
> 
> +
> 
> +  @retval EFI_SUCCESS   Function completed.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +CheckIconCleared (
> 
> +  IN VK_CONTEXT *VkContext
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS                    Status;
> 
> +  UINT32                        VerticalResolution;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer;
> 
> +
> 
> +  Status = EFI_SUCCESS;
> 
> +  BltBuffer = NULL;
> 
> +  VkContext->IconReDrawCheck++;
> 
> +  if (VkContext->IconReDrawCheck <= 10) {
> 
> +    //
> 
> +    // Check it every 10 * 100ms.
> 
> +    //
> 
> +    return Status;
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Check if right-bottomed region is black, if yes, clean screen happened,
> need to re-draw keyboard.
> 
> +  //
> 
> +  VerticalResolution    = VkContext->GraphicsOutput->Mode->Info-
> >VerticalResolution;
> 
> +  BltBuffer             = AllocateZeroPool (VkContext->IconBltSize);
> 
> +  if (BltBuffer == NULL) {
> 
> +    return EFI_OUT_OF_RESOURCES;
> 
> +  }
> 
> +  Status = VkContext->GraphicsOutput->Blt (
> 
> +                                        VkContext->GraphicsOutput,
> 
> +                                        BltBuffer,
> 
> +                                        EfiBltVideoToBltBuffer,
> 
> +                                        0,
> 
> +                                        (VerticalResolution - VkContext->IconBltHeight),
> 
> +                                        0,
> 
> +                                        0,
> 
> +                                        VkContext->IconBltWidth,
> 
> +                                        VkContext->IconBltHeight,
> 
> +                                        VkContext->IconBltWidth * sizeof
> (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
> 
> +                                        );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    FreePool (BltBuffer);
> 
> +    return Status;
> 
> +  }
> 
> +  VkContext->IsIconShowed = TRUE;
> 
> +  if (VkContext->IconBltBuffer == NULL) {
> 
> +    //
> 
> +    // No icon has been drawn.
> 
> +    //
> 
> +    VkContext->IsIconShowed = FALSE;
> 
> +  } else {
> 
> +    if (CompareMem (BltBuffer, VkContext->IconBltBuffer, VkContext-
> >IconBltSize) != 0) {
> 
> +      //
> 
> +      // Icon has been overridden, need to re-draw.
> 
> +      //
> 
> +      VkContext->IsIconShowed = FALSE;
> 
> +    }
> 
> +  }
> 
> +
> 
> +  if (VkContext->IsIconShowed == FALSE) {
> 
> +    if (VkContext->ScreenCheckBuffer != NULL) {
> 
> +      if (CompareMem (BltBuffer, VkContext->ScreenCheckBuffer,
> VkContext->IconBltSize) == 0) {
> 
> +        //
> 
> +        // Icon has been overridden, force to re-draw the keyboard.
> 
> +        //
> 
> +        Status = DrawKeyboardLayout (VkContext);
> 
> +      } else {
> 
> +        //
> 
> +        // Save blt buffer of icon position and use it to check if icon is
> overridden.
> 
> +        //
> 
> +        CopyMem (VkContext->ScreenCheckBuffer, BltBuffer, VkContext-
> >IconBltSize);
> 
> +      }
> 
> +    } else {
> 
> +      //
> 
> +      // Draw the keyboard.
> 
> +      //
> 
> +      Status = DrawKeyboardLayout (VkContext);
> 
> +    }
> 
> +  }
> 
> +
> 
> +  if (BltBuffer != NULL) {
> 
> +    FreePool (BltBuffer);
> 
> +  }
> 
> +
> 
> +  VkContext->IconReDrawCheck = 0;
> 
> +
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  ConvertCoordinate - Convert the touch panel's coordinate to display's
> coordinate.
> 
> +
> 
> +  @param[in]  VkContext             Virtual Keyboard context.
> 
> +  @param[in]  Point                 The coordinate reported from touch panel.
> 
> +  @param[out] TouchX                The coordinate X converted to display panel.
> 
> +  @param[out] TouchY                The coordinate Y converted to display panel..
> 
> +
> 
> +  @retval EFI_SUCCESS               Convert success.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +ConvertCoordinate (
> 
> +  IN  VK_CONTEXT                 *VkContext,
> 
> +  IN  EFI_ABSOLUTE_POINTER_STATE Point,
> 
> +  OUT UINT32                     *TouchX,
> 
> +  OUT UINT32                     *TouchY
> 
> +  )
> 
> +{
> 
> +  UINT64 AbsoluteMaxX;
> 
> +  UINT64 AbsoluteMaxY;
> 
> +  UINT32 HorizontalResolution;
> 
> +  UINT32 VerticalResolution;
> 
> +
> 
> +  AbsoluteMaxX         = VkContext->AbsolutePointer->Mode-
> >AbsoluteMaxX;
> 
> +  AbsoluteMaxY         = VkContext->AbsolutePointer->Mode-
> >AbsoluteMaxY;
> 
> +  HorizontalResolution = VkContext->GraphicsOutput->Mode->Info-
> >HorizontalResolution;
> 
> +  VerticalResolution   = VkContext->GraphicsOutput->Mode->Info-
> >VerticalResolution;
> 
> +  *TouchX              = (UINT32) MultU64x32 (Point.CurrentX,
> HorizontalResolution) / (UINT32) AbsoluteMaxX;
> 
> +  *TouchY              = (UINT32) MultU64x32 (Point.CurrentY, VerticalResolution)
> / (UINT32) AbsoluteMaxY;
> 
> +
> 
> +  return EFI_SUCCESS;
> 
> +}
> 
> +
> 
> +/**
> 
> +  This routine is used to check if screen has been cleared.
> 
> +
> 
> +  @param[in] VkContext  Pointer to virtual keyboard's context
> 
> +
> 
> +  @retval EFI_SUCCESS   Function completed.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +CheckScreenCleared (
> 
> +  IN VK_CONTEXT *VkContext
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS                    Status;
> 
> +  UINT32                        HorizontalResolution;
> 
> +  UINT32                        VerticalResolution;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBufferIndex;
> 
> +  UINTN                         BltSize;
> 
> +  BOOLEAN                       IsScreenCleared;
> 
> +
> 
> +  //
> 
> +  // Check left-bottom side.
> 
> +  // If IconBltBuffer is null, checking is meaningless.
> 
> +  //
> 
> +  if (VkContext->IconBltBuffer == NULL) {
> 
> +    return EFI_SUCCESS;
> 
> +  }
> 
> +
> 
> +  IsScreenCleared = FALSE;
> 
> +  Status          = EFI_SUCCESS;
> 
> +  if ((gST->ConOut->Mode->CursorColumn == 0) && (gST->ConOut->Mode-
> >CursorRow == 0)) {
> 
> +    //
> 
> +    // System may call gST->ConOut->ClearScreen
> 
> +    //
> 
> +    HorizontalResolution  = VkContext->GraphicsOutput->Mode->Info-
> >HorizontalResolution;
> 
> +    VerticalResolution    = VkContext->GraphicsOutput->Mode->Info-
> >VerticalResolution;
> 
> +    BltBuffer             = AllocateZeroPool (VkContext->IconBltSize);
> 
> +    if (BltBuffer == NULL) {
> 
> +      return EFI_OUT_OF_RESOURCES;
> 
> +    }
> 
> +
> 
> +    BltBufferIndex = BltBuffer;
> 
> +    Status = VkContext->GraphicsOutput->Blt (
> 
> +                                          VkContext->GraphicsOutput,
> 
> +                                          BltBuffer,
> 
> +                                          EfiBltVideoToBltBuffer,
> 
> +                                          (HorizontalResolution - VkContext->IconBltWidth),
> 
> +                                          (VerticalResolution - VkContext->IconBltHeight),
> 
> +                                          0,
> 
> +                                          0,
> 
> +                                          VkContext->IconBltWidth,
> 
> +                                          VkContext->IconBltHeight,
> 
> +                                          VkContext->IconBltWidth * sizeof
> (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
> 
> +                                          );
> 
> +    if (EFI_ERROR (Status)) {
> 
> +      FreePool (BltBuffer);
> 
> +      return Status;
> 
> +    }
> 
> +    BltSize = VkContext->IconBltHeight * VkContext->IconBltWidth;
> 
> +    IsScreenCleared = TRUE;
> 
> +    while (BltSize-- != 0) {
> 
> +      if ((BltBufferIndex->Red != 0) || (BltBufferIndex->Green != 0) ||
> (BltBufferIndex->Blue != 0)) {
> 
> +        IsScreenCleared = FALSE;
> 
> +        break;
> 
> +      }
> 
> +      BltBufferIndex++;
> 
> +    }
> 
> +    FreePool (BltBuffer);
> 
> +  }
> 
> +
> 
> +  if (IsScreenCleared) {
> 
> +    VkContext->IsIconShowed   = FALSE;
> 
> +    VkContext->CurrentKeyboardDisplay = VkDisplayAttributeNone;
> 
> +
> 
> +    if (VkContext->VkBodyBackgroundBltBuffer != NULL) {
> 
> +      FreePool (VkContext->VkBodyBackgroundBltBuffer);
> 
> +      VkContext->VkBodyBackgroundBltBuffer = NULL;
> 
> +    }
> 
> +
> 
> +    if (VkContext->VkBodyCompoundBltBuffer != NULL) {
> 
> +      FreePool (VkContext->VkBodyCompoundBltBuffer);
> 
> +      VkContext->VkBodyCompoundBltBuffer = NULL;
> 
> +    }
> 
> +
> 
> +    if (VkContext->IconBltBuffer != NULL) {
> 
> +      FreePool (VkContext->IconBltBuffer);
> 
> +      VkContext->IconBltBuffer = NULL;
> 
> +    }
> 
> +
> 
> +  }
> 
> +
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  This routine is used to check if background beneath virtual keyboard has
> been cleared.
> 
> +
> 
> +  @param[in] VkContext  Pointer to virtual keyboard's context
> 
> +
> 
> +  @retval EFI_SUCCESS   Function completed.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +CheckBackgroundChanged (
> 
> +  IN VK_CONTEXT *VkContext
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS                    Status;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer;
> 
> +
> 
> +  Status                         = EFI_SUCCESS;
> 
> +  VkContext->IsBackgroundChanged = FALSE;
> 
> +
> 
> +  if ((VkContext->CurrentKeyboardDisplay == VkDisplayAttributeNone) ||
> (VkContext->VkBodyCompoundBltBuffer == NULL)) {
> 
> +    return EFI_SUCCESS;
> 
> +  }
> 
> +
> 
> +  BltBuffer = AllocateZeroPool (VkContext->VkBodyBltSize);
> 
> +  if (BltBuffer == NULL) {
> 
> +    return EFI_OUT_OF_RESOURCES;
> 
> +  }
> 
> +  Status = VkContext->GraphicsOutput->Blt (
> 
> +                                        VkContext->GraphicsOutput,
> 
> +                                        BltBuffer,
> 
> +                                        EfiBltVideoToBltBuffer,
> 
> +                                        VkContext->VkBodyBltStartX,
> 
> +                                        VkContext->VkBodyBltStartY,
> 
> +                                        0,
> 
> +                                        0,
> 
> +                                        VkContext->VkBodyBltWidth,
> 
> +                                        VkContext->VkBodyBltHeight,
> 
> +                                        VkContext->VkBodyBltWidth * sizeof
> (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
> 
> +                                        );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    FreePool (BltBuffer);
> 
> +    return Status;
> 
> +  }
> 
> +  if (CompareMem (BltBuffer, VkContext->VkBodyCompoundBltBuffer,
> VkContext->VkBodyBltSize) != 0) {
> 
> +    VkContext->IsBackgroundChanged = TRUE;
> 
> +    VkContext->CurrentKeyboardDisplay = VkDisplayAttributeNone;
> 
> +    DrawKeyboardLayout (VkContext);
> 
> +  }
> 
> +
> 
> +  if (BltBuffer != NULL) {
> 
> +    FreePool (BltBuffer);
> 
> +  }
> 
> +
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Get unicode by VkContext->PageNumber and VkContext-
> >KeyboardBodyPtr.
> 
> +
> 
> +  @param[in]  VkContext            Address of an VK_CONTEXT structure.
> 
> +  @param[in]  KeyItem              Key Item.
> 
> +  @param[out] FontPtr              Follow VkContext->PageNumber to translate
> 
> +                                   font unicode.
> 
> +
> 
> +  @retval EFI_SUCCESS              Finish translating FontPtr.
> 
> +  @retval EFI_INVALID_PARAMETER    VkContext or FontPtr is NULL.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +VkGetMappingFont (
> 
> +  IN  VK_CONTEXT *VkContext,
> 
> +  IN  VK_STRUCT  KeyItem,
> 
> +  OUT UINT32     *FontPtr
> 
> +  )
> 
> +{
> 
> +  if ((VkContext == NULL) || (FontPtr == NULL) || (VkContext-
> >PageNumber>=VkPageMaximum)) {
> 
> +    return EFI_INVALID_PARAMETER;
> 
> +  }
> 
> +  *FontPtr = (UINT32) KeyItem.PageFont[VkContext->PageNumber];
> 
> +
> 
> +  return EFI_SUCCESS;
> 
> +}
> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/KeyboardLayout.idf
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/KeyboardLayout.idf
> new file mode 100644
> index 0000000000..995bd0d859
> --- /dev/null
> +++
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/KeyboardLayout.idf
> @@ -0,0 +1,12 @@
> +// /** @file
> 
> +// Virtual Keyboard Layout
> 
> +//
> 
> +// Copyright (c) 2019 - 2020, Intel Corporation. All rights reserved.<BR>
> 
> +//
> 
> +// SPDX-License-Identifier: BSD-2-Clause-Patent
> 
> +//
> 
> +#image IMG_VK_CAPITALLETTERKEYBOARD TRANSPARENT
> CapitalLetterKeyboard.bmp
> 
> +#image IMG_VK_DIGITKEYBOARD         TRANSPARENT DigitKeyboard.bmp
> 
> +#image IMG_VK_FULLICON              TRANSPARENT FullIcon.bmp
> 
> +#image IMG_VK_SIMPLEICON            TRANSPARENT SimpleIcon.bmp
> 
> +#image IMG_VK_SIMPLEKEYBOARD        TRANSPARENT
> SimpleKeyboard.bmp
> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/SimpleIcon.bmp
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/SimpleIcon.bmp
> new file mode 100644
> index
> 0000000000000000000000000000000000000000..16816f031eb98bf8169c7119b9
> 5ea3ed1371f41d
> GIT binary patch
> literal 2814
> zcmeHDu?>JQ41<*mn3%bM1K9bStAMDgEvtknP%#v#jj<EA^|~EHm%hdJ+18
> X--;Igi
> zvz~tHZ083bZvKJwS=AedIaS~0$e`HvNI;OvAp=5}kZlld1O%z<Y2HkwWx^;3ew
> ~S4
> zE{O5qpp83T)f<O7RWIkrpxE|EK#<BI145UOZ4hn*1gY$4-
> b|%s!YByBnW#Y!<5EEz
> Lcf5u-&Un3EdmJn}
> 
> literal 0
> HcmV?d00001
> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/SimpleKeyboard.bmp
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/SimpleKeyboard.bmp
> new file mode 100644
> index
> 0000000000000000000000000000000000000000..3004a534f026fe4906e64480f2
> 239b7b7923640b
> GIT binary patch
> literal 30054
> zcmeI4u}<Vj5QcZfOI*MMoQN*rh)6CYxVKncNOmv4BfvB82Bbvfq#z*?AOZqJ
> ghT*n
> z_unb@zyGS-
> J?$BL#!R;*ta5dA_1~YXjc085>+gU5{W9DB#Qt~ueEazM`sKHo|BsLM
> z*}=!|d)xXGP=M>Qqv~}j(Q%zBZCbCb!q%%qN2e-vPQf-
> |Q&6HB3RQjm|E3w{+S+w%
> zYin*i0t!_jQj?oqlAkf?LVK=JsLDy2n^ps~Z)2roqTN_UCMnMvSsfl8o}ZtmguxG
> O
> znO4`d{2JWZ*?D<+u{>{YZwChlZiscU0;t#5R|q>jJ#~_JSRpIUod!YKNlf8ttQ@Ee
> zuF6?;f=c14nU!8VjgQ;A#aJz?xu9Zo)yc|%dU|?#cz7^4@9*zdS65nKtgZ@KIZ%
> &}
> zkNf-k_xJZ?b#!!ec6LTwpa&0rY1YOng4*5P-QM1ItU%`S^3vfNn-
> %Y2%uuPTzZX>|
> z;DCw(C<s$OtEdx~n@;A?IA;Q^3H-
> Ua;OVf^GnHZm@vJUo=qA;9xG}606lR)X#ilx0
> zIZ%04Y^{*h-
> QAu2QqzUQ;=#h{WP*Usj+(^TpM4G5Rn$!ihjUq_F26AqJ&hGn%r!QH
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> B>8{
> zWDOcCJg<p&$az-
> QYQ1V>g?kKsmbX=qVa1C^wX7Vj6f1&4e9f#BS0^h4RUs>^IQKZ|
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> Kc#P7znEt4>hpUK=Y++2Ojqz18;_uCK3WCH8a2iZad>
> zvWmC}M-
> 2z6&bqQ9an+@iVnx+lS9x5qq8cj@h}D$>h2T1`S5_ysKR!Oz1<1$W8e?{2
> z1rEfO0fn%}%4!C<@}O4C%2Z|cIB~XRVqB9gALopRzY_P(k5t-
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> zvC6=4O^dPON$G10URQ29qaIF>l}W;W)QR^^PF2$prjjPB%86`;jlfU@`Yz!y;^S
> P#
> z7^QDcr>bxF@#0n3c%$^qOjUh5jva5p#vY|_{-
> &y&SYy>#l@lnBY<1OGl@lnBY<1OG
> zl@lnB{B(6y_^nPkf$~Vl3QCsW%11{ehtpmuRTi(2YU81j9xiF~t2yTBRK?a3gOjC
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> z(u*;jy*gDP61{BC?lkb{f%p#tJS;a-2{)CMy=`)FaZ!$lk@c{`i(Y&!htuz648n>U
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> zVhxCI;ie*yYHx3kl3+Mh+C+JH?~8w>Yw>tSxxjXEa>8CZklCwY1^xEopADJ<g|
> G!!
> z;a47C`Z7?1?3ZViT2O?bOyJ}TAuKI@_s_i?g44PHEBmK9gYeNLW3!6+c^M%q78
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> 
> literal 0
> HcmV?d00001
> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/VirtualKeyboard.h
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/VirtualKeyboard.h
> new file mode 100644
> index 0000000000..14a50fa5af
> --- /dev/null
> +++
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/VirtualKeyboard.h
> @@ -0,0 +1,829 @@
> +/** @file
> 
> +  Header file for Virtual Keyboard driver.
> 
> +
> 
> +  Copyright (c) 2012 - 2020, Intel Corporation. All rights reserved.<BR>
> 
> +  SPDX-License-Identifier: BSD-2-Clause-Patent
> 
> +
> 
> +**/
> 
> +
> 
> +#ifndef _VIRTUAL_KEYBOARD_H_
> 
> +#define _VIRTUAL_KEYBOARD_H_
> 
> +
> 
> +#include <Uefi.h>
> 
> +#include <Library/BaseMemoryLib.h>
> 
> +#include <Library/DebugLib.h>
> 
> +#include <Library/MemoryAllocationLib.h>
> 
> +#include <Library/UefiBootServicesTableLib.h>
> 
> +#include <Library/UefiDriverEntryPoint.h>
> 
> +#include <Library/UefiLib.h>
> 
> +#include <Library/BaseLib.h>
> 
> +#include <Library/PcdLib.h>
> 
> +#include <Library/HiiLib.h>
> 
> +#include <Protocol/AbsolutePointer.h>
> 
> +#include <Protocol/GraphicsOutput.h>
> 
> +#include <Protocol/SimpleTextIn.h>
> 
> +#include <Protocol/SimpleTextInEx.h>
> 
> +#include <Protocol/SimpleTextOut.h>
> 
> +#include <Protocol/HiiDatabase.h>
> 
> +#include <Protocol/HiiImageEx.h>
> 
> +#include <Protocol/HiiPackageList.h>
> 
> +#include <Guid/ConsoleInDevice.h>
> 
> +#include "ComponentName.h"
> 
> +
> 
> +//
> 
> +// Global Variables
> 
> +//
> 
> +extern EFI_DRIVER_BINDING_PROTOCOL   gVirtualKeyboardDriverBinding;
> 
> +extern EFI_COMPONENT_NAME_PROTOCOL
> gVirtualKeyboardComponentName;
> 
> +extern EFI_COMPONENT_NAME2_PROTOCOL
> gVirtualKeyboardComponentName2;
> 
> +
> 
> +///
> 
> +/// Debug raw data points
> 
> +///
> 
> +#define DEBUG_VK_POINTS               DEBUG_INFO
> 
> +
> 
> +///
> 
> +/// Debug data point scaling
> 
> +///
> 
> +#define DEBUG_VK_POINT_SCALING        DEBUG_INFO
> 
> +
> 
> +///
> 
> +/// Debug key press
> 
> +///
> 
> +#define DEBUG_VK_KEYS                 DEBUG_INFO
> 
> +
> 
> +///
> 
> +/// Debug routine entry and exit
> 
> +///
> 
> +#define DEBUG_VK_ROUTINE_ENTRY_EXIT   DEBUG_VERBOSE
> 
> +
> 
> +///
> 
> +/// Display the graphics info
> 
> +///
> 
> +#define DEBUG_VK_GRAPHICS_INFO        DEBUG_INFO
> 
> +
> 
> +///
> 
> +/// Display the timer entry and exit
> 
> +///
> 
> +#define DEBUG_VK_TIMER_ENTRY_EXIT     DEBUG_VERBOSE
> 
> +
> 
> +///
> 
> +/// Signature
> 
> +///
> 
> +#define VK_SIGNATURE                  SIGNATURE_32 ('V', 'K', 'e', 'y')
> 
> +#define VK_NOTIFY_SIGNATURE           SIGNATURE_32 ('V', 'K', 'n', 's')
> 
> +
> 
> +///
> 
> +/// Poll interval
> 
> +///
> 
> +#define VK_POLL_INTERVAL              (1000 * 1000)
> 
> +
> 
> +///
> 
> +/// Define the touch timeout in poll intervals
> 
> +///
> 
> +#define VK_REPEAT_TIMEOUT             5
> 
> +
> 
> +///
> 
> +/// TPL used to synchronize add/remove from list
> 
> +///
> 
> +#define TPL_VK_SYNC                   TPL_NOTIFY
> 
> +
> 
> +///
> 
> +/// Dimension of an array ( number of elements )
> 
> +///
> 
> +#define DIM(x)      ( sizeof ( x ) / sizeof ( x [ 0 ]))
> 
> +
> 
> +///
> 
> +/// Define Key buffer
> 
> +///
> 
> +#define MAX_KEY_BUF_SIZE 64
> 
> +
> 
> +///
> 
> +/// Define Transparent Weight
> 
> +///
> 
> +#define TRANSPARENCY_WEIGHT 50
> 
> +
> 
> +typedef struct _VK_CONTEXT VK_CONTEXT;
> 
> +
> 
> +typedef enum _VK_KEY_TYPE {
> 
> +  VkKeyNull         = 0x0000 | CHAR_NULL,
> 
> +  VkKeyBackspace    = 0x0000 | CHAR_BACKSPACE,
> 
> +  VkKeyTab          = 0x0000 | CHAR_TAB,
> 
> +  VkKeyEnter        = 0x0000 | CHAR_CARRIAGE_RETURN,
> 
> +  VkKeyScanMask     = 0x1000,
> 
> +  VkKeyEsc          = 0x1000 | SCAN_ESC,
> 
> +  VkKeyLeft         = 0x1000 | SCAN_LEFT,
> 
> +  VkKeyRight        = 0x1000 | SCAN_RIGHT,
> 
> +  VkKeyUp           = 0x1000 | SCAN_UP,
> 
> +  VkKeyDown         = 0x1000 | SCAN_DOWN,
> 
> +  VkKeyF1           = 0x1000 | SCAN_F1,
> 
> +  VkKeyF2           = 0x1000 | SCAN_F2,
> 
> +  VkKeyF3           = 0x1000 | SCAN_F3,
> 
> +  VkKeyF4           = 0x1000 | SCAN_F4,
> 
> +  VkKeyF5           = 0x1000 | SCAN_F5,
> 
> +  VkKeyF6           = 0x1000 | SCAN_F6,
> 
> +  VkKeyF7           = 0x1000 | SCAN_F7,
> 
> +  VkKeyF8           = 0x1000 | SCAN_F8,
> 
> +  VkKeyF9           = 0x1000 | SCAN_F9,
> 
> +  VkKeyF10          = 0x1000 | SCAN_F10,
> 
> +  VkKeyF11          = 0x1000 | SCAN_F11,
> 
> +  VkKeyF12          = 0x1000 | SCAN_F12,
> 
> +  VkKeySpecificMask = 0x2000,
> 
> +  VkKeyShift        = 0x2000 | 0x0000,
> 
> +  VkKeyCapslock     = 0x2000 | 0x0001,
> 
> +  VkKeyTwoPage      = 0x2000 | 0x0002,
> 
> +  VkKeyTypeMaximum  = 0xFFFF
> 
> +} VK_KEY_TYPE;
> 
> +
> 
> +typedef enum _VK_PAGE_TYPE {
> 
> +  //
> 
> +  // +---+---+---+---+---+---+---+---+---+---+---+
> 
> +  // | q | w | e | r | t | y | u | i | o | p |<X|| Line 0
> 
> +  // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> 
> +  // | | a | s | d | f | g | h | j | k | l | F2| | Line 1
> 
> +  // +-+---+---+---+---+---+---+---+---+---+---+-+
> 
> +  // |Caps | z | x | c | v | b | n | m |aU |Enter| Line 2
> 
> +  // +-----+---+---+---+---+---+---+---+---+---+-+
> 
> +  // | Esc |12#|       Space       |aL |aD |aR | | Line 3
> 
> +  // +-----+---+-------------------+---+---+---+-+
> 
> +  //
> 
> +  VkPage0,
> 
> +
> 
> +  //
> 
> +  // +---+---+---+---+---+---+---+---+---+---+---+
> 
> +  // | Q | W | E | R | T | Y | U | I | O | P |<X|| Line 0
> 
> +  // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> 
> +  // | | A | S | D | F | G | H | J | K | L | F2| | Line 1
> 
> +  // +-+---+---+---+---+---+---+---+---+---+---+-+
> 
> +  // |Caps | Z | X | C | V | B | N | M |aU |Enter| Line 2
> 
> +  // +-----+---+---+---+---+---+---+---+---+---+-+
> 
> +  // | Esc |12#|       Space       |aL |aD |aR | | Line 3
> 
> +  // +-----+---+-------------------+---+---+---+-+
> 
> +  //
> 
> +  VkPage1,
> 
> +
> 
> +  //
> 
> +  // +---+---+---+---+---+---+---+---+---+---+---+
> 
> +  // | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 |<X|| Line 0
> 
> +  // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> 
> +  // | |F1 |F2 |F3 |F4 |F5 |F6 |F7 |F8 |F9 |F10| | Line 1
> 
> +  // +-+---+---+---+---+---+---+---+---+---+---+-+
> 
> +  // |Shift| . | ; | ' | , | . | / |F11|F12|Enter| Line 2
> 
> +  // +-----+---+---+---+---+---+---+---+---+---+-+
> 
> +  // | Esc |12#|       Space       | \ | - | = | | Line 3
> 
> +  // +-----+---+-------------------+---+---+---+-+
> 
> +  //
> 
> +  VkPage2,
> 
> +
> 
> +  //
> 
> +  // +---+---+---+---+---+---+---+---+---+---+---+
> 
> +  // | ! | @ | # | $ | % | ^ | & | * | ( | ) |<X|| Line 0
> 
> +  // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> 
> +  // | |F1 |F2 |F3 |F4 |F5 |F6 |F7 |F8 |F9 |F10| | Line 1
> 
> +  // +-+---+---+---+---+---+---+---+---+---+---+-+
> 
> +  // |Shift| ~ | : | " | < | > | ? |F11|F12|Enter| Line 2
> 
> +  // +-----+---+---+---+---+---+---+---+---+---+-+
> 
> +  // | Esc |12#|       Space       | | | _ | + | | Line 3
> 
> +  // +-----+---+-------------------+---+---+---+-+
> 
> +  //
> 
> +  VkPage3,
> 
> +  VkPageMaximum
> 
> +} VK_PAGE_TYPE;
> 
> +
> 
> +typedef enum VK_DISPLAY_ATTRIBUTE {
> 
> +  VkDisplayAttributeNone,         /// No keyboard displayed
> 
> +  VkDisplayAttributeFullTop,      /// Full keyboard display at top
> 
> +  VkDisplayAttributeFullBottom,   /// Full keyboard display at bottom
> 
> +  VkDisplayAttributeSimpleTop,    /// Simple keyboard display at top
> 
> +  VkDisplayAttributeSimpleBottom, /// Simple keyboard display at bottom
> 
> +  VkDisplayAttributeMaximum
> 
> +} VK_DISPLAY_ATTRIBUTE;
> 
> +
> 
> +typedef struct _VK_STRUCT {
> 
> +  UINT16      DisStartX;
> 
> +  UINT16      DisStartY;
> 
> +  UINT16      DisEndX;
> 
> +  UINT16      DisEndY;
> 
> +  VK_KEY_TYPE PageFont[VkPageMaximum];
> 
> +} VK_STRUCT;
> 
> +
> 
> +typedef struct _VK_NOTIFY {
> 
> +  UINTN                               Signature;
> 
> +  EFI_KEY_DATA                        KeyData;
> 
> +  EFI_KEY_NOTIFY_FUNCTION             KeyNotificationFn;
> 
> +  LIST_ENTRY                          NotifyEntry;
> 
> +} VK_NOTIFY;
> 
> +
> 
> +///
> 
> +/// Virtual Keyboard context
> 
> +///
> 
> +struct _VK_CONTEXT {
> 
> +  ///
> 
> +  /// Structure identification
> 
> +  ///
> 
> +  UINTN                             Signature;
> 
> +
> 
> +  ///
> 
> +  /// Controller Handle
> 
> +  ///
> 
> +  EFI_HANDLE                        Controller;
> 
> +
> 
> +  ///
> 
> +  /// Upper level API
> 
> +  ///
> 
> +  EFI_SIMPLE_TEXT_INPUT_PROTOCOL    SimpleTextIn;
> 
> +
> 
> +  ///
> 
> +  /// Simple Text In EX
> 
> +  ///
> 
> +  EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL SimpleTextInEx;
> 
> +
> 
> +  ///
> 
> +  /// Lower level APIs
> 
> +  ///
> 
> +  EFI_ABSOLUTE_POINTER_PROTOCOL     *AbsolutePointer;
> 
> +  EFI_GRAPHICS_OUTPUT_PROTOCOL      *GraphicsOutput;
> 
> +
> 
> +  ///
> 
> +  /// Flag when the last poll indicated a touch event
> 
> +  ///
> 
> +  BOOLEAN                           TouchActive;
> 
> +
> 
> +  ///
> 
> +  /// Time to poll for touch input
> 
> +  ///
> 
> +  EFI_EVENT                         TimerEvent;
> 
> +
> 
> +  ///
> 
> +  /// HII handle to get image data used
> 
> +  ///
> 
> +  EFI_HII_HANDLE                    HiiHandle;
> 
> +  EFI_HII_IMAGE_EX_PROTOCOL         *HiiImageEx;
> 
> +
> 
> +  ///
> 
> +  /// Keyboard body background buffer information
> 
> +  ///
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL     *VkBodyBackgroundBltBuffer;
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL     *VkBodyCompoundBltBuffer;
> 
> +  UINTN                             VkBodyBltSize;
> 
> +  UINTN                             VkBodyBltStartX;
> 
> +  UINTN                             VkBodyBltStartY;
> 
> +  UINTN                             VkBodyBltHeight;
> 
> +  UINTN                             VkBodyBltWidth;
> 
> +  BOOLEAN                           IsBackgroundChanged;
> 
> +
> 
> +  ///
> 
> +  /// Icon buffer information
> 
> +  ///
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL     *IconBltBuffer;
> 
> +  UINTN                             IconBltSize;
> 
> +  UINTN                             IconBltHeight;
> 
> +  UINTN                             IconBltWidth;
> 
> +
> 
> +  ///
> 
> +  /// Full icon background buffer information
> 
> +  ///
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL     *FullIconBackBuffer;
> 
> +  UINTN                             FullIconBackStartX;
> 
> +  UINTN                             FullIconBackStartY;
> 
> +  UINTN                             FullIconBackHeight;
> 
> +  UINTN                             FullIconBackWidth;
> 
> +  UINTN                             FullIconBackSize;
> 
> +  BOOLEAN                           FullIconUpdatedFlag;
> 
> +
> 
> +  ///
> 
> +  /// Simple icon background buffer information
> 
> +  ///
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL     *SimIconBackBuffer;
> 
> +  UINTN                             SimIconBackStartX;
> 
> +  UINTN                             SimIconBackStartY;
> 
> +  UINTN                             SimIconBackHeight;
> 
> +  UINTN                             SimIconBackWidth;
> 
> +  UINTN                             SimIconBackSize;
> 
> +  BOOLEAN                           SimIconUpdatedFlag;
> 
> +
> 
> +  ///
> 
> +  /// Small Icon
> 
> +  ///
> 
> +  EFI_IMAGE_INPUT                   *SmallIcon;
> 
> +
> 
> +  ///
> 
> +  /// Full Icon
> 
> +  ///
> 
> +  EFI_IMAGE_INPUT                   *FullIcon;
> 
> +
> 
> +  ///
> 
> +  /// Simple Key body
> 
> +  ///
> 
> +  EFI_IMAGE_INPUT                   *SimKeyBody;
> 
> +
> 
> +  ///
> 
> +  /// Digital key body
> 
> +  ///
> 
> +  EFI_IMAGE_INPUT                   *DigKeyBody;
> 
> +
> 
> +  ///
> 
> +  /// Capital Letter Key board
> 
> +  ///
> 
> +  EFI_IMAGE_INPUT                   *CapLeKeyBody;
> 
> +
> 
> +  ///
> 
> +  /// Screen check buffer.
> 
> +  /// This is used to check if screen is kept scrolling up.
> 
> +  ///
> 
> +  EFI_GRAPHICS_OUTPUT_BLT_PIXEL     *ScreenCheckBuffer;
> 
> +  UINTN                             ScreenCheckBufferSize;
> 
> +
> 
> +  ///
> 
> +  /// Key state
> 
> +  ///
> 
> +  BOOLEAN                           KeyPressed;
> 
> +
> 
> +  ///
> 
> +  /// Keyboard display status
> 
> +  ///
> 
> +  VK_DISPLAY_ATTRIBUTE              CurrentKeyboardDisplay;
> 
> +  VK_DISPLAY_ATTRIBUTE              TargetKeyboardDisplay;
> 
> +
> 
> +  ///
> 
> +  /// Keyboard icon display status
> 
> +  ///
> 
> +  BOOLEAN                           IsIconShowed;
> 
> +  UINT8                             IconReDrawCheck;
> 
> +
> 
> +  ///
> 
> +  /// Keyboard body Image address
> 
> +  /// Size of KeyboardBodyPtr must larger than mFullKeyboardBody
> 
> +  ///
> 
> +  UINT32                            NumOfKeysInfo;
> 
> +  VK_STRUCT                         KeyboardBodyPtr[50];
> 
> +
> 
> +  ///
> 
> +  /// KeyBuffer
> 
> +  ///
> 
> +  EFI_EVENT                         KeyNotifyProcessEvent;
> 
> +  EFI_KEY_TOGGLE_STATE              KeyToggleState;
> 
> +  EFI_KEY_DATA                      Keybuffer[MAX_KEY_BUF_SIZE];
> 
> +  UINT8                             KeyStartIndex;
> 
> +  UINT8                             KeyEndIndex;
> 
> +  UINT16                            KeyTouchedTimeOut;
> 
> +  BOOLEAN                           IsShiftKeyFlag;
> 
> +  BOOLEAN                           IsCapsLockFlag;
> 
> +  BOOLEAN                           IsSupportPartialKey;
> 
> +  BOOLEAN                           IsRedrawUpdateUI;
> 
> +  VK_PAGE_TYPE                      PageNumber;
> 
> +  LIST_ENTRY                        NotifyList;
> 
> +};
> 
> +
> 
> +///
> 
> +/// Locate VK_CONTEXT from protocol
> 
> +///
> 
> +#define VK_CONTEXT_FROM_PROTOCOL(a)                CR (a, VK_CONTEXT,
> SimpleTextIn, VK_SIGNATURE)
> 
> +#define VK_CONTEXT_FROM_SIMPLETEXTINEX_PROTOCOL(a) CR (a,
> VK_CONTEXT, SimpleTextInEx, VK_SIGNATURE)
> 
> +#define VK_CONTEXT_FROM_VKBD_PROTOCOL(a)           CR (a,
> VK_CONTEXT, VkbdProtocol, VK_SIGNATURE)
> 
> +
> 
> +/**
> 
> +  Start the virtual keyboard driver
> 
> +
> 
> +  This routine allocates the necessary resources for the driver.
> 
> +
> 
> +  This routine is called by VirtualKeyboardDriverStart to complete the driver
> 
> +  initialization.
> 
> +
> 
> +  @param[in, out] VkContext        Address of an VK_CONTEXT structure
> 
> +  @param[in] Controller            Handle of device to work with.
> 
> +
> 
> +  @retval EFI_SUCCESS              Driver API properly initialized
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +VkApiStart (
> 
> +  IN OUT VK_CONTEXT *VkContext,
> 
> +  IN EFI_HANDLE Controller
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Stop the virtual keyboard driver
> 
> +
> 
> +  This routine releases the resources allocated by VKApiStart.
> 
> +
> 
> +  This routine is called by VirtualKeyboardDriverStop to initiate the driver
> 
> +  shutdown.
> 
> +
> 
> +  @param[in] VkContext        Address of an VK_CONTEXT structure
> 
> +
> 
> +**/
> 
> +VOID
> 
> +VkApiStop (
> 
> +  IN VK_CONTEXT *VkContext
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Resets the input device hardware.
> 
> +
> 
> +  The Reset() function resets the input device hardware. As part
> 
> +  of initialization process, the firmware/device will make a quick
> 
> +  but reasonable attempt to verify that the device is functioning.
> 
> +  If the ExtendedVerification flag is TRUE the firmware may take
> 
> +  an extended amount of time to verify the device is operating on
> 
> +  reset. Otherwise the reset operation is to occur as quickly as
> 
> +  possible. The hardware verification process is not defined by
> 
> +  this specification and is left up to the platform firmware or
> 
> +  driver to implement.
> 
> +
> 
> +  @param[in] This                 A pointer to the
> EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL instance.
> 
> +
> 
> +  @param[in] ExtendedVerification Indicates that the driver may perform a
> more exhaustive
> 
> +                                  verification operation of the device during reset.
> 
> +
> 
> +  @retval EFI_SUCCESS             The device was reset.
> 
> +  @retval EFI_DEVICE_ERROR        The device is not functioning correctly and
> could not be reset.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VkKeyboardReset (
> 
> +  IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,
> 
> +  IN BOOLEAN                        ExtendedVerification
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Reads the next keystroke from the input device. The WaitForKey Event
> can
> 
> +  be used to test for existence of a keystroke via WaitForEvent () call.
> 
> +
> 
> +  @param[in]  This         Protocol instance pointer.
> 
> +  @param[out] Key          Driver may perform diagnostics on reset.
> 
> +
> 
> +  @retval EFI_SUCCESS      The keystroke information was returned.
> 
> +  @retval EFI_NOT_READY    There was no keystroke data available.
> 
> +  @retval EFI_DEVICE_ERROR The keystroke information was not returned
> due to
> 
> +                           hardware errors.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VkKeyboardReadKeyStroke (
> 
> +  IN  EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,
> 
> +  OUT EFI_INPUT_KEY                  *Key
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Resets the input device hardware.
> 
> +
> 
> +  The Reset() function resets the input device hardware. As part
> 
> +  of initialization process, the firmware/device will make a quick
> 
> +  but reasonable attempt to verify that the device is functioning.
> 
> +  If the ExtendedVerification flag is TRUE the firmware may take
> 
> +  an extended amount of time to verify the device is operating on
> 
> +  reset. Otherwise the reset operation is to occur as quickly as
> 
> +  possible. The hardware verification process is not defined by
> 
> +  this specification and is left up to the platform firmware or
> 
> +  driver to implement.
> 
> +
> 
> +  @param[in] This                 A pointer to the
> EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL instance.
> 
> +
> 
> +  @param[in] ExtendedVerification Indicates that the driver may perform a
> more exhaustive
> 
> +                                  verification operation of the device during reset.
> 
> +
> 
> +  @retval EFI_SUCCESS             The device was reset.
> 
> +  @retval EFI_DEVICE_ERROR        The device is not functioning correctly and
> could not be reset.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VkKeyboardResetEx (
> 
> +  IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
> 
> +  IN BOOLEAN                           ExtendedVerification
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Reads the next keystroke from the input device.
> 
> +
> 
> +  @param[in]  This               Protocol instance pointer.
> 
> +  @param[out] KeyData            A pointer to a buffer that is filled in with the
> keystroke
> 
> +                                 state data for the key that was pressed.
> 
> +
> 
> +  @retval EFI_SUCCESS            The keystroke information was returned.
> 
> +  @retval EFI_NOT_READY          There was no keystroke data available.
> 
> +  @retval EFI_INVALID_PARAMETER  This or KeyData is NULL.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VkKeyboardReadKeyStrokeEx (
> 
> +  IN  EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
> 
> +  OUT EFI_KEY_DATA                      *KeyData
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Set certain state for the input device.
> 
> +
> 
> +  @param[in] This                 Protocol instance pointer.
> 
> +  @param[in] KeyToggleState       A pointer to the EFI_KEY_TOGGLE_STATE
> to set the
> 
> +                                  state for the input device.
> 
> +
> 
> +  @retval EFI_SUCCESS             The device state was set appropriately.
> 
> +  @retval EFI_INVALID_PARAMETER   This or KeyToggleState is NULL.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VkKeyboardSetState (
> 
> +  IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
> 
> +  IN EFI_KEY_TOGGLE_STATE              *KeyToggleState
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Register a notification function for a particular keystroke for the input
> device.
> 
> +
> 
> +  @param[in]  This                        Protocol instance pointer.
> 
> +  @param[in]  KeyData                     A pointer to a buffer that is filled in with
> the keystroke
> 
> +                                          information data for the key that was pressed.
> 
> +  @param[in]  KeyNotificationFunction     Points to the function to be called
> when the key
> 
> +                                          sequence is typed specified by KeyData.
> 
> +  @param[out] NotifyHandle                Points to the unique handle assigned to
> the registered notification.
> 
> +
> 
> +  @retval EFI_SUCCESS                     The notification function was registered
> successfully.
> 
> +  @retval EFI_OUT_OF_RESOURCES            Unable to allocate resources for
> necessary data structures.
> 
> +  @retval EFI_INVALID_PARAMETER           KeyData or NotifyHandle or
> KeyNotificationFunction is NULL.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VkKeyboardRegisterKeyNotify (
> 
> +  IN  EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
> 
> +  IN  EFI_KEY_DATA                      *KeyData,
> 
> +  IN  EFI_KEY_NOTIFY_FUNCTION           KeyNotificationFunction,
> 
> +  OUT EFI_HANDLE                        *NotifyHandle
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Remove a registered notification function from a particular keystroke.
> 
> +
> 
> +  @param[in] This                Protocol instance pointer.
> 
> +  @param[in] NotificationHandle  The handle of the notification function
> being unregistered.
> 
> +
> 
> +  @retval EFI_SUCCESS            The notification function was unregistered
> successfully.
> 
> +  @retval EFI_INVALID_PARAMETER  The NotificationHandle is invalid
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VkKeyboardUnregisterKeyNotify (
> 
> +  IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
> 
> +  IN EFI_HANDLE                        NotificationHandle
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Draw key board on the display
> 
> +
> 
> +  @param[in] VkContext          Graphic Protocol for draw the alphabet.
> 
> +
> 
> +  @retval EFI_SUCCESS           Draw keyboard was done.
> 
> +  @retval EFI_UNSUPPORTED       Did not get key mapping table.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +DrawKeyboardLayout (
> 
> +  IN VK_CONTEXT *VkContext
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Clear the keyboard body
> 
> +
> 
> +  @param[in] VkContext          Code context.
> 
> +
> 
> +  @retval EFI_SUCCESS           Clear rectangle is done.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +HideVkBody (
> 
> +  IN VK_CONTEXT *VkContext
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Clear the keyboard icon
> 
> +
> 
> +  @param[in] VkContext          Code context.
> 
> +
> 
> +  @retval EFI_SUCCESS           Clear rectangle is done.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +HideVkIcon (
> 
> +  IN VK_CONTEXT *VkContext
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Use to draw the keyboard icon.
> 
> +
> 
> +  @param[in] VkContext  Pointer to virtual keyboard's context
> 
> +  @param[in] VkImage    Image of keyboard to display on the screen.
> 
> +  @param[in] Attribute  Attribute of keyboard to display on the screen.
> 
> +
> 
> +  @retval EFI_SUCCESS           ConsoleControl has been flipped to graphics
> and keyboard icon displayed.
> 
> +  @retval EFI_UNSUPPORTED       KeyboardFile not found
> 
> +  @retval EFI_INVALID_PARAMETER Attribute is unknown.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +DrawVkIcon (
> 
> +  IN VK_CONTEXT                    *VkContext,
> 
> +  IN EFI_IMAGE_INPUT               *VkImage,
> 
> +  IN VK_DISPLAY_ATTRIBUTE          Attribute
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Use to draw the keyboard.
> 
> +
> 
> +  @param[in] VkContext  Pointer to virtual keyboard's context
> 
> +  @param[in] VkImage    Image of keyboard to display on the screen.
> 
> +  @param[in] Attribute  Attribute of keyboard to display on the screen.
> 
> +
> 
> +  @retval EFI_SUCCESS           ConsoleControl has been flipped to graphics
> and keyboard displayed.
> 
> +  @retval EFI_UNSUPPORTED       KeyboardFile not found
> 
> +  @retval EFI_INVALID_PARAMETER Attribute is unknown.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +DrawVkBody (
> 
> +  IN VK_CONTEXT                    *VkContext,
> 
> +  IN EFI_IMAGE_INPUT               *VkImage,
> 
> +  IN VK_DISPLAY_ATTRIBUTE          Attribute
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Get unicode by VkContext->PageNumber and VkContext-
> >KeyboardBodyPtr.
> 
> +
> 
> +  @param[in]  VkContext            Address of an VK_CONTEXT structure.
> 
> +  @param[in]  KeyItem              Key Item.
> 
> +  @param[out] FontPtr              Follow VkContext->PageNumber to translate
> 
> +                                   font unicode.
> 
> +
> 
> +  @retval EFI_SUCCESS              Finish translating FontPtr.
> 
> +  @retval EFI_INVALID_PARAMETER    VkContext or FontPtr is NULL.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +VkGetMappingFont (
> 
> +  IN  VK_CONTEXT *VkContext,
> 
> +  IN  VK_STRUCT  KeyItem,
> 
> +  OUT UINT32     *FontPtr
> 
> +  );
> 
> +
> 
> +/**
> 
> +  This routine is used to check if icon has been cleared.
> 
> +
> 
> +  @param[in] VkContext  Pointer to virtual keyboard's context
> 
> +
> 
> +  @retval EFI_SUCCESS   Function completed.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +CheckIconCleared (
> 
> +  IN VK_CONTEXT *VkContext
> 
> +  );
> 
> +
> 
> +/**
> 
> +  ConvertCoordinate - Convert the touch panel's coordinate to display's
> coordinate.
> 
> +
> 
> +  @param[in]  VkContext             Virtual Keyboard context.
> 
> +  @param[in]  Point                 The coordinate reported from touch panel.
> 
> +  @param[out] TouchX                The coordinate X converted to display panel.
> 
> +  @param[out] TouchY                The coordinate Y converted to display panel..
> 
> +
> 
> +  @retval EFI_SUCCESS               Convert success.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +ConvertCoordinate (
> 
> +  IN  VK_CONTEXT                 *VkContext,
> 
> +  IN  EFI_ABSOLUTE_POINTER_STATE Point,
> 
> +  OUT UINT32                     *TouchX,
> 
> +  OUT UINT32                     *TouchY
> 
> +  );
> 
> +
> 
> +/**
> 
> +  This routine is used to check if screen has been cleared.
> 
> +
> 
> +  @param[in] VkContext  Pointer to virtual keyboard's context
> 
> +
> 
> +  @retval EFI_SUCCESS   Function completed.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +CheckScreenCleared (
> 
> +  IN VK_CONTEXT *VkContext
> 
> +  );
> 
> +
> 
> +/**
> 
> +  This routine is used to check if background beneath virtual keyboard has
> been cleared.
> 
> +
> 
> +  @param[in] VkContext  Pointer to virtual keyboard's context
> 
> +
> 
> +  @retval EFI_SUCCESS   Function completed.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +CheckBackgroundChanged (
> 
> +  IN VK_CONTEXT *VkContext
> 
> +  );
> 
> +
> 
> +/**
> 
> +  To prevent screen keyboard layout occur scroll up
> 
> +
> 
> +  @param[in, out]  VkContext            Address of an VK_CONTEXT structure.
> 
> +
> 
> +**/
> 
> +VOID
> 
> +PreventScreenScrollUp (
> 
> +  IN OUT VK_CONTEXT *VkContext
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Set the position of character.
> 
> +
> 
> +  @param[in] VkContext      Address of an VK_CONTEXT structure.
> 
> +  @param[in] DestX          X position.
> 
> +  @param[in] DestY          Y position.
> 
> +
> 
> +  @retval EFI_SUCCESS       Success for the function.
> 
> +  @retval Others            An unexpected error occurred.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +SetCharacterPosition (
> 
> +  IN VK_CONTEXT *VkContext,
> 
> +  IN UINT32     DestX,
> 
> +  IN UINT32     DestY
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Set the keyboard layout.
> 
> +
> 
> +  @param[in] VkContext          Graphic Protocol for draw the alphabet.
> 
> +  @param[in] Index              The layout selected.
> 
> +
> 
> +  @retval EFI_SUCCESS           Draw keyboard was done.
> 
> +  @retval Others                An unexpected error occurred.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +KeyboardLayoutHandler (
> 
> +  IN VK_CONTEXT *VkContext,
> 
> +  IN UINT32     Index
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Save the background blt buffer.
> 
> +
> 
> +  @param[in] VkContext           Address of an VK_CONTEXT structure.
> 
> +  @param[in] BltSize             Size of blt.
> 
> +
> 
> +  @retval EFI_SUCCESS            Success for the function.
> 
> +  @retval EFI_OUT_OF_RESOURCES   Allocate memory failed.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +SaveVkBodyBackgroundBltBuffer (
> 
> +  IN VK_CONTEXT *VkContext,
> 
> +  IN UINTN      BltSize
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Restore the background blt buffer.
> 
> +
> 
> +  @param[in] VkContext           Address of an VK_CONTEXT structure.
> 
> +
> 
> +  @retval EFI_SUCCESS            Success for the function.
> 
> +  @retval EFI_UNSUPPORTED        Input blt buffer is NULL.
> 
> +  @retval Others                 An unexpected error occurred.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +RestoreVkBodyBackgroundBltBuffer (
> 
> +  IN VK_CONTEXT *VkContext
> 
> +  );
> 
> +
> 
> +/**
> 
> +  Save the icon background blt buffer.
> 
> +
> 
> +  @param[in] VkContext      Address of an VK_CONTEXT structure.
> 
> +  @param[in] IconType       The icon type.
> 
> +
> 
> +  @retval EFI_SUCCESS            Success for the function.
> 
> +  @retval EFI_OUT_OF_RESOURCES   Allocate memory failed.
> 
> +  @retval Others                 An unexpected error occurred.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +SaveVkIconBackgroundBltBuffer (
> 
> +  IN VK_CONTEXT           *VkContext,
> 
> +  IN VK_DISPLAY_ATTRIBUTE IconType
> 
> +  );
> 
> +#endif
> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/VirtualKeyboardDriver.c
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/VirtualKeyboardDriver.c
> new file mode 100644
> index 0000000000..523c662b29
> --- /dev/null
> +++
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/VirtualKeyboardDriver.c
> @@ -0,0 +1,515 @@
> +/** @file
> 
> +  Virtual Keyboard driver.
> 
> +
> 
> +  Copyright (c) 2012 - 2020, Intel Corporation. All rights reserved.<BR>
> 
> +  SPDX-License-Identifier: BSD-2-Clause-Patent
> 
> +
> 
> +**/
> 
> +
> 
> +#include "VirtualKeyboard.h"
> 
> +
> 
> +UINT32         mOrigConOutRow      = 0;
> 
> +UINT32         mOrigSetupConOutRow = 0;
> 
> +EFI_HII_HANDLE mHiiHandle          = NULL;
> 
> +/**
> 
> +  Verify the controller type
> 
> +
> 
> +  This routine determines if the pointer and GOP are available.
> 
> +
> 
> +  This routine is called by the UEFI driver framework during connect
> 
> +  processing.
> 
> +
> 
> +  @param[in] This                 Protocol instance pointer.
> 
> +  @param[in] Controller           Handle of device to test.
> 
> +  @param[in] RemainingDevicePath  Not used.
> 
> +
> 
> +  @retval EFI_SUCCESS             This driver supports this device.
> 
> +  @retval other                   This driver does not support this device.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VirtualKeyboardDriverSupported (
> 
> +  IN EFI_DRIVER_BINDING_PROTOCOL *This,
> 
> +  IN EFI_HANDLE                  Controller,
> 
> +  IN EFI_DEVICE_PATH_PROTOCOL    *RemainingDevicePath
> 
> +  )
> 
> +{
> 
> +  EFI_GRAPHICS_OUTPUT_PROTOCOL  *GraphicsOutput;
> 
> +  EFI_STATUS                    Status;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VirtualKeyboardDriverSupported Start\n"));
> 
> +
> 
> +  //
> 
> +  // Verify that the driver is not already started
> 
> +  //
> 
> +  Status = gBS->OpenProtocol (
> 
> +                  Controller,
> 
> +                  &gEfiCallerIdGuid,
> 
> +                  NULL,
> 
> +                  This->DriverBindingHandle,
> 
> +                  Controller,
> 
> +                  EFI_OPEN_PROTOCOL_TEST_PROTOCOL
> 
> +                  );
> 
> +  if (!EFI_ERROR (Status)) {
> 
> +    Status = EFI_ALREADY_STARTED;
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "ERROR - VK has already
> initialized\n"));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Determine if the pointer protocol is available.
> 
> +  // This should be installed in touch driver.
> 
> +  //
> 
> +  Status = gBS->OpenProtocol (
> 
> +                  Controller,
> 
> +                  &gEfiAbsolutePointerProtocolGuid,
> 
> +                  NULL,
> 
> +                  This->DriverBindingHandle,
> 
> +                  Controller,
> 
> +                  EFI_OPEN_PROTOCOL_TEST_PROTOCOL
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "ERROR - VK Absolute
> pointer protocol not found\n"));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  Status = gBS->OpenProtocol (
> 
> +                  Controller,
> 
> +                  &gEdkiiTouchPanelGuid,
> 
> +                  NULL,
> 
> +                  This->DriverBindingHandle,
> 
> +                  Controller,
> 
> +                  EFI_OPEN_PROTOCOL_TEST_PROTOCOL
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "ERROR - VK Touch Panel
> Guid not found\n"));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Determine if the graphics output protocol is available
> 
> +  //
> 
> +  Status = gBS->HandleProtocol (
> 
> +                  gST->ConsoleOutHandle,
> 
> +                  &gEfiGraphicsOutputProtocolGuid,
> 
> +                  (VOID **)&GraphicsOutput
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "ERROR - VK Graphics
> output protocol not found\n"));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_INFO,
> "VirtualKeyboardDriverSupported Success, Status: %r\n", Status));
> 
> +  goto End;
> 
> +
> 
> +Error:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VirtualKeyboardDriverSupported Failed, Status: %r\n", Status));
> 
> +
> 
> +End:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VirtualKeyboardDriverSupported End\n"));
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Connect to the controller
> 
> +
> 
> +  This routine initializes an instance of the virutal keyboard driver for this
> 
> +  controller.
> 
> +
> 
> +  This routine is called by the UEFI driver framework during connect
> 
> +  processing if the controller passes the tests in I2cBusDriverSupported.
> 
> +
> 
> +  @param[in] This                 Protocol instance pointer.
> 
> +  @param[in] Controller           Handle of device to work with.
> 
> +  @param[in] RemainingDevicePath  Not used, always produce all possible
> children.
> 
> +
> 
> +  @retval EFI_SUCCESS             This driver is added to Controller.
> 
> +  @retval other                   This driver does not support this device.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VirtualKeyboardDriverStart (
> 
> +  IN EFI_DRIVER_BINDING_PROTOCOL *This,
> 
> +  IN EFI_HANDLE                  Controller,
> 
> +  IN EFI_DEVICE_PATH_PROTOCOL    *RemainingDevicePath
> 
> +  )
> 
> +{
> 
> +  VK_CONTEXT *VkContext;
> 
> +  EFI_STATUS Status;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_INFO,
> "VirtualKeyboardDriverStart Start\n"));
> 
> +
> 
> +  VkContext = AllocateZeroPool (sizeof (VK_CONTEXT));
> 
> +  if (VkContext == NULL) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR -
> No memory for virtual keyboard driver\n"));
> 
> +    Status = EFI_OUT_OF_RESOURCES;
> 
> +    ASSERT_EFI_ERROR (Status);
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  Status = gBS->OpenProtocol (
> 
> +                  Controller,
> 
> +                  &gEfiAbsolutePointerProtocolGuid,
> 
> +                  (VOID**) &VkContext->AbsolutePointer,
> 
> +                  This->DriverBindingHandle,
> 
> +                  Controller,
> 
> +                  EFI_OPEN_PROTOCOL_BY_DRIVER
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR -
> Failed to open absolute pointer protocol, Status: %r\n", Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  Status = gBS->OpenProtocol (
> 
> +                  Controller,
> 
> +                  &gEdkiiTouchPanelGuid,
> 
> +                  NULL,
> 
> +                  This->DriverBindingHandle,
> 
> +                  Controller,
> 
> +                  EFI_OPEN_PROTOCOL_TEST_PROTOCOL
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR -
> TouchPanel GUID not found, Status: %r\n", Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  Status = gBS->HandleProtocol (
> 
> +                  gST->ConsoleOutHandle,
> 
> +                  &gEfiGraphicsOutputProtocolGuid,
> 
> +                  (VOID**) &VkContext->GraphicsOutput
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR -
> Graphics output protocol not available, Status: %r\n", Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  VkContext->HiiHandle = mHiiHandle;
> 
> +  Status = VkApiStart (VkContext, Controller);
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR -
> Failed to VkApiStart, Status: %r\n", Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  Status = gBS->InstallMultipleProtocolInterfaces (
> 
> +                  &Controller,
> 
> +                  &gEfiCallerIdGuid,
> 
> +                  VkContext,
> 
> +                  &gEfiSimpleTextInProtocolGuid,
> 
> +                  &VkContext->SimpleTextIn,
> 
> +                  &gEfiSimpleTextInputExProtocolGuid,
> 
> +                  &VkContext->SimpleTextInEx,
> 
> +                  &gEfiConsoleInDeviceGuid,
> 
> +                  NULL,
> 
> +                  NULL
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_ERROR, "ERROR -
> Failed to install VK protocols, Status: %r\n", Status));
> 
> +    ASSERT_EFI_ERROR (Status);
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT | DEBUG_INFO,
> "VirtualKeyboardDriverStart Success, Status: %r\n", Status));
> 
> +  goto End;
> 
> +
> 
> +Error:
> 
> +  if (VkContext != NULL) {
> 
> +    FreePool (VkContext);
> 
> +  }
> 
> +
> 
> +  gBS->CloseProtocol (
> 
> +         Controller,
> 
> +         &gEfiAbsolutePointerProtocolGuid,
> 
> +         This->DriverBindingHandle,
> 
> +         Controller
> 
> +         );
> 
> +
> 
> +  //
> 
> +  // Restore setting if connect device fail.
> 
> +  //
> 
> +  PcdSet32S (PcdConOutRow, mOrigConOutRow);
> 
> +  PcdSet32S (PcdSetupConOutRow, mOrigSetupConOutRow);
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverStart
> Failed, Status: %r\n", Status));
> 
> +
> 
> +End:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverStart
> End\n"));
> 
> +
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Disconnect from the controller.
> 
> +
> 
> +  This routine disconnects from the controller.
> 
> +
> 
> +  This routine is called by DriverUnload when the I2C bus driver
> 
> +  is being unloaded.
> 
> +
> 
> +  @param[in] This                 Protocol instance pointer.
> 
> +  @param[in] Controller           Handle of device to stop driver on.
> 
> +  @param[in] NumberOfChildren     How many children need to be stopped.
> 
> +  @param[in] ChildHandleBuffer    Not used.
> 
> +
> 
> +  @retval EFI_SUCCESS             This driver is removed Controller.
> 
> +  @retval EFI_DEVICE_ERROR        The device could not be stopped due to a
> device error.
> 
> +  @retval other                   This driver was not removed from this device.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VirtualKeyboardDriverStop (
> 
> +  IN  EFI_DRIVER_BINDING_PROTOCOL *This,
> 
> +  IN  EFI_HANDLE                  Controller,
> 
> +  IN  UINTN                       NumberOfChildren,
> 
> +  IN  EFI_HANDLE                  *ChildHandleBuffer
> 
> +  )
> 
> +{
> 
> +  VK_CONTEXT                          *VkContext;
> 
> +  EFI_STATUS                          Status;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverStop
> Start\n"));
> 
> +
> 
> +  Status = gBS->OpenProtocol (
> 
> +                  Controller,
> 
> +                  &gEfiCallerIdGuid,
> 
> +                  (VOID**)&VkContext,
> 
> +                  This->DriverBindingHandle,
> 
> +                  Controller,
> 
> +                  EFI_OPEN_PROTOCOL_BY_DRIVER |
> EFI_OPEN_PROTOCOL_EXCLUSIVE
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    Status = EFI_SUCCESS;
> 
> +    goto Success;
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Done with the driver protocol
> 
> +  //
> 
> +  Status = gBS->CloseProtocol (
> 
> +                  Controller,
> 
> +                  &gEfiCallerIdGuid,
> 
> +                  This->DriverBindingHandle,
> 
> +                  Controller
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "ERROR - Failed to close the
> VK protocol, Status: %r\n", Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Remove ConsoleIn protocols first to close the link in ConSplitter
> 
> +  //
> 
> +  Status = gBS->OpenProtocol (
> 
> +                  Controller,
> 
> +                  &gEfiConsoleInDeviceGuid,
> 
> +                  NULL,
> 
> +                  This->DriverBindingHandle,
> 
> +                  Controller,
> 
> +                  EFI_OPEN_PROTOCOL_TEST_PROTOCOL
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "ERROR - Failed to uninstall
> the protocols, Status: %r\n", Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Remove the remaining protocols
> 
> +  //
> 
> +  Status = gBS->UninstallMultipleProtocolInterfaces (
> 
> +                  Controller,
> 
> +                  &gEfiCallerIdGuid,
> 
> +                  VkContext,
> 
> +                  &gEfiSimpleTextInProtocolGuid,
> 
> +                  &VkContext->SimpleTextIn,
> 
> +                  &gEfiSimpleTextInputExProtocolGuid,
> 
> +                  &VkContext->SimpleTextInEx,
> 
> +                  &gEfiConsoleInDeviceGuid,
> 
> +                  NULL,
> 
> +                  NULL
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "ERROR - Failed to uninstall
> the protocols, Status: %r\n", Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Stop the driver
> 
> +  //
> 
> +  VkApiStop (VkContext);
> 
> +
> 
> +  //
> 
> +  // Release the pointer protocol upon failure
> 
> +  //
> 
> +  Status = gBS->CloseProtocol (
> 
> +                  Controller,
> 
> +                  &gEfiAbsolutePointerProtocolGuid,
> 
> +                  This->DriverBindingHandle,
> 
> +                  Controller
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "ERROR - Failed to close
> absolute pointer protocol, Status: %r\n", Status));
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Release VkContext
> 
> +  //
> 
> +  if (VkContext != NULL) {
> 
> +    FreePool (VkContext);
> 
> +  }
> 
> +
> 
> +Success:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverStop
> Success, Status: %r\n", Status));
> 
> +  goto End;
> 
> +
> 
> +Error:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverStop
> Failed, Status: %r\n", Status));
> 
> +
> 
> +End:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "VirtualKeyboardDriverStop
> End\n"));
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +/**
> 
> +  Unloads an image.
> 
> +
> 
> +  @param[in] ImageHandle        Handle that identifies the image to be
> unloaded.
> 
> +
> 
> +  @retval EFI_SUCCESS           The image has been unloaded.
> 
> +  @retval EFI_INVALID_PARAMETER ImageHandle is not a valid image
> handle.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VirtualKeyboardDriverUnload (
> 
> +  IN EFI_HANDLE ImageHandle
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS                 Status;
> 
> +  EFI_HANDLE                 *HandleBuffer;
> 
> +  UINTN                      HandleCount;
> 
> +  UINTN                      Index;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VirtualKeyboardDriverUnload Start\n"));
> 
> +
> 
> +  //
> 
> +  // Retrieve array of all handles in the handle database
> 
> +  //
> 
> +  Status = gBS->LocateHandleBuffer (
> 
> +                  AllHandles,
> 
> +                  NULL,
> 
> +                  NULL,
> 
> +                  &HandleCount,
> 
> +                  &HandleBuffer
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT, "ERROR - Failed to locate
> handle buffer, Status: %r\n", Status));
> 
> +    ASSERT_EFI_ERROR (Status);
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Disconnect the current driver from handles in the handle database
> 
> +  //
> 
> +  for (Index = 0; Index < HandleCount; Index++) {
> 
> +    gBS->DisconnectController (HandleBuffer[Index], ImageHandle, NULL);
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Free the array of handles
> 
> +  //
> 
> +  if (HandleBuffer != NULL) {
> 
> +    FreePool (HandleBuffer);
> 
> +  }
> 
> +
> 
> +  //
> 
> +  // Uninstall protocols installed in the driver entry point
> 
> +  //
> 
> +  Status = gBS->UninstallMultipleProtocolInterfaces (
> 
> +                  ImageHandle,
> 
> +                  &gEfiDriverBindingProtocolGuid,
> 
> +                  &gVirtualKeyboardDriverBinding,
> 
> +                  &gEfiComponentNameProtocolGuid,
> 
> +                  &gVirtualKeyboardComponentName,
> 
> +                  &gEfiComponentName2ProtocolGuid,
> 
> +                  &gVirtualKeyboardComponentName2,
> 
> +                  NULL
> 
> +                  );
> 
> +  if (EFI_ERROR (Status)) {
> 
> +    ASSERT_EFI_ERROR (Status);
> 
> +    goto Error;
> 
> +  }
> 
> +
> 
> +  HiiRemovePackages (mHiiHandle);
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VirtualKeyboardDriverUnload Success, Status: %r\n", Status));
> 
> +  goto End;
> 
> +
> 
> +Error:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VirtualKeyboardDriverUnload Failed, Status: %r\n", Status));
> 
> +
> 
> +End:
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VirtualKeyboardDriverUnload End\n"));
> 
> +  return Status;
> 
> +}
> 
> +
> 
> +EFI_DRIVER_BINDING_PROTOCOL gVirtualKeyboardDriverBinding = {
> 
> +  VirtualKeyboardDriverSupported,
> 
> +  VirtualKeyboardDriverStart,
> 
> +  VirtualKeyboardDriverStop,
> 
> +  0x10,
> 
> +  NULL,
> 
> +  NULL
> 
> +};
> 
> +
> 
> +/**
> 
> +  This is the declaration of an EFI image entry point. This entry point is
> 
> +  the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including
> 
> +  both device drivers and bus drivers.
> 
> +
> 
> +  @param  ImageHandle           The firmware allocated handle for the UEFI
> image.
> 
> +  @param  SystemTable           A pointer to the EFI System Table.
> 
> +
> 
> +  @retval EFI_SUCCESS           The operation completed successfully.
> 
> +  @retval Others                An unexpected error occurred.
> 
> +
> 
> +**/
> 
> +EFI_STATUS
> 
> +EFIAPI
> 
> +VirtualKeyboardDriverEntryPoint (
> 
> +  IN EFI_HANDLE       ImageHandle,
> 
> +  IN EFI_SYSTEM_TABLE *SystemTable
> 
> +  )
> 
> +{
> 
> +  EFI_STATUS                     Status;
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VirtualKeyboardDriverEntryPoint Start\n"));
> 
> +  //
> 
> +  // Install UEFI Driver Model protocol(s).
> 
> +  //
> 
> +  Status = EfiLibInstallDriverBindingComponentName2 (
> 
> +             ImageHandle,
> 
> +             SystemTable,
> 
> +             &gVirtualKeyboardDriverBinding,
> 
> +             ImageHandle,
> 
> +             &gVirtualKeyboardComponentName,
> 
> +             &gVirtualKeyboardComponentName2
> 
> +             );
> 
> +  ASSERT_EFI_ERROR (Status);
> 
> +
> 
> +  mHiiHandle = HiiAddPackages (
> 
> +                 &gEfiCallerIdGuid,
> 
> +                 NULL,
> 
> +                 VirtualKeyboardDxeImages,
> 
> +                 NULL
> 
> +                 );
> 
> +  ASSERT (mHiiHandle != NULL);
> 
> +
> 
> +  mOrigConOutRow      = PcdGet32 (PcdConOutRow);
> 
> +  mOrigSetupConOutRow = PcdGet32 (PcdSetupConOutRow);
> 
> +
> 
> +  DEBUG ((DEBUG_VK_ROUTINE_ENTRY_EXIT,
> "VirtualKeyboardDriverEntryPoint End\n"));
> 
> +  return Status;
> 
> +}
> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/VirtualKeyboardDxe.inf
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/VirtualKeyboardDxe.inf
> new file mode 100644
> index 0000000000..38843443e1
> --- /dev/null
> +++
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dDxe/VirtualKeyboardDxe.inf
> @@ -0,0 +1,78 @@
> +## @file
> 
> +# Instance of virtual keyboard driver binding protocol.
> 
> +#
> 
> +# Compliant with efi driver model, 1. VirtualKeyboardDriverSupported
> 
> +# determines if the pointer and GOP are available. 2.
> 
> +# VirtualKeyboardDriverStart initializes an instance of the virtual
> 
> +# keyboard driver for a particular controller. 3.
> 
> +# VirtualKeyboardDriverStop is called by DriverUnload when the I2C bus
> 
> +# driver is being unload.
> 
> +#
> 
> +# Copyright (c) 2012 - 2020, Intel Corporation. All rights reserved.<BR>
> 
> +# SPDX-License-Identifier: BSD-2-Clause-Patent
> 
> +#
> 
> +##
> 
> +
> 
> +[Defines]
> 
> +  INF_VERSION                    = 0x00010017
> 
> +  BASE_NAME                      = VirtualKeyboardDxe
> 
> +  FILE_GUID                      = E4735AAC-9C27-493f-86EA-9EFF43D7ADCD
> 
> +  VERSION_STRING                 = 2.0
> 
> +  MODULE_TYPE                    = UEFI_DRIVER
> 
> +  ENTRY_POINT                    = VirtualKeyboardDriverEntryPoint
> 
> +  UNLOAD_IMAGE                   = VirtualKeyboardDriverUnload
> 
> +
> 
> +#
> 
> +#  VALID_ARCHITECTURES           = IA32 X64
> 
> +#  DRIVER_BINDING                = gVirtualKeyboardDriverBinding;
> 
> +#  COMPONENT_NAME                = gVirtualKeyboardComponentName;
> 
> +#  COMPONENT_NAME2               = gVirtualKeyboardComponentName2;
> 
> +#
> 
> +
> 
> +[LibraryClasses]
> 
> +  BaseMemoryLib
> 
> +  DebugLib
> 
> +  MemoryAllocationLib
> 
> +  UefiBootServicesTableLib
> 
> +  UefiDriverEntryPoint
> 
> +  UefiLib
> 
> +  PcdLib
> 
> +  HiiLib
> 
> +
> 
> +[Packages]
> 
> +  MdePkg/MdePkg.dec
> 
> +  MdeModulePkg/MdeModulePkg.dec
> 
> +  VirtualKeyboardFeaturePkg/VirtualKeyboardFeaturePkg.dec
> 
> +
> 
> +[Pcd]
> 
> +  gEfiMdeModulePkgTokenSpaceGuid.PcdConOutRow
> 
> +  gEfiMdeModulePkgTokenSpaceGuid.PcdSetupConOutRow
> 
> +
> 
> +[Sources]
> 
> +  CapitalLetterKeyboard.bmp
> 
> +  DigitKeyboard.bmp
> 
> +  FullIcon.bmp
> 
> +  SimpleIcon.bmp
> 
> +  SimpleKeyboard.bmp
> 
> +  KeyboardLayout.idf
> 
> +  KeyboardLayout.c
> 
> +  ComponentName.c
> 
> +  ComponentName.h
> 
> +  Keyboard.c
> 
> +  VirtualKeyboard.h
> 
> +  VirtualKeyboardDriver.c
> 
> +
> 
> +[Protocols]
> 
> +  gEfiAbsolutePointerProtocolGuid               ## TO_START
> 
> +  gEfiDriverBindingProtocolGuid                 ## PRODUCES
> 
> +  gEfiGraphicsOutputProtocolGuid                ## TO_START
> 
> +  gEfiSimpleTextInProtocolGuid                  ## BY_START
> 
> +  gEfiSimpleTextInputExProtocolGuid             ## BY_START
> 
> +  gEfiHiiImageExProtocolGuid                    ## TO_START
> 
> +
> 
> +[Guids]
> 
> +  gEfiConsoleInDeviceGuid                       ## SOMETIMES_PRODUCES
> 
> +  gEdkiiTouchPanelGuid                          ## TO_START
> 
> +
> 
> +[Depex]
> 
> +  gEfiHiiDatabaseProtocolGuid
> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dFeaturePkg.dec
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dFeaturePkg.dec
> new file mode 100644
> index 0000000000..c26db01f09
> --- /dev/null
> +++
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dFeaturePkg.dec
> @@ -0,0 +1,26 @@
> +## @file
> 
> +# This package provides advanced feature functionality for User
> Authentication support.
> 
> +# This package should only depend on EDK II Core packages, IntelSiliconPkg,
> and MinPlatformPkg.
> 
> +#
> 
> +# The DEC files are used by the utilities that parse DSC and
> 
> +# INF files to generate AutoGen.c and AutoGen.h files
> 
> +# for the build infrastructure.
> 
> +#
> 
> +# Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
> 
> +#
> 
> +# SPDX-License-Identifier: BSD-2-Clause-Patent
> 
> +#
> 
> +##
> 
> +
> 
> +[Defines]
> 
> +  DEC_SPECIFICATION = 0x00010017
> 
> +  PACKAGE_NAME      = VirtualKeyboardFeaturePkg
> 
> +  PACKAGE_GUID      = A40DFD69-3552-40E8-8D3D-89741B03B9E1
> 
> +  PACKAGE_VERSION   = 0.1
> 
> +
> 
> +[Includes]
> 
> +  Include
> 
> +
> 
> +[Guids]
> 
> +  ## GUID used for VirtualKeyboardDriver to open TouchPanel protocol.
> 
> +  gEdkiiTouchPanelGuid                             = { 0x91b1d27b, 0xe126, 0x48d1,
> { 0x82, 0x34, 0xd2, 0x8b, 0x81, 0xc8, 0x83, 0x62 }}
> 
> diff --git
> a/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dFeaturePkg.dsc
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dFeaturePkg.dsc
> new file mode 100644
> index 0000000000..ea2005c6d2
> --- /dev/null
> +++
> b/Features/Intel/UserInterface/VirtualKeyboardFeaturePkg/VirtualKeyboar
> dFeaturePkg.dsc
> @@ -0,0 +1,30 @@
> +## @file
> 
> +# This is a build description file for the Virtual Keyboard advanced feature.
> 
> +# This package should only depend on EDK II Core packages, IntelSiliconPkg,
> and MinPlatformPkg.
> 
> +#
> 
> +# The DEC files are used by the utilities that parse DSC and
> 
> +# INF files to generate AutoGen.c and AutoGen.h files
> 
> +# for the build infrastructure.
> 
> +#
> 
> +# Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
> 
> +#
> 
> +# SPDX-License-Identifier: BSD-2-Clause-Patent
> 
> +#
> 
> +##
> 
> +
> 
> +[Defines]
> 
> +  PLATFORM_NAME                  = VirtualKeyboardFeaturePkg
> 
> +  PLATFORM_GUID                  = 6D396683-C82B-41D5-84E7-BB6E13B7C2BF
> 
> +  PLATFORM_VERSION               = 0.1
> 
> +  DSC_SPECIFICATION              = 0x00010005
> 
> +  OUTPUT_DIRECTORY               = Build/$(PLATFORM_NAME)
> 
> +  SUPPORTED_ARCHITECTURES        = IA32|X64
> 
> +  BUILD_TARGETS                  = DEBUG|RELEASE|NOOPT
> 
> +  SKUID_IDENTIFIER               = DEFAULT
> 
> +  PEI_ARCH                       = IA32
> 
> +  DXE_ARCH                       = X64
> 
> +
> 
> +#
> 
> +# This package always builds the feature.
> 
> +#
> 
> +!include Include/VirtualKeyboardFeature.dsc
> 
> --
> 2.24.0.windows.2
> 
> 
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