The Library provides Boot Manager interfaces.
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4054
Cc: Bibo Mao <maobibo@loongson.cn>
Cc: Chao Li <lichao@loongson.cn>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: xianglai li <lixianglai@loongson.cn>
---
.../PlatformBootManagerLib/PlatformBm.c | 742 ++++++++++++++++++
.../PlatformBootManagerLib/PlatformBm.h | 112 +++
.../PlatformBootManagerLib.inf | 75 ++
.../PlatformBootManagerLib/QemuKernel.c | 81 ++
4 files changed, 1010 insertions(+)
create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBm.c
create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBm.h
create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf
create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/QemuKernel.c
diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBm.c b/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBm.c
new file mode 100644
index 0000000000..eb7f4241f0
--- /dev/null
+++ b/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBm.c
@@ -0,0 +1,742 @@
+/** @file
+ Implementation for PlatformBootManagerLib library class interfaces.
+
+ Copyright (c) 2022 Loongson Technology Corporation Limited. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <IndustryStandard/Pci22.h>
+#include <Library/BootLogoLib.h>
+#include <Library/PcdLib.h>
+#include <Library/QemuBootOrderLib.h>
+#include <Library/UefiBootManagerLib.h>
+#include <Protocol/FirmwareVolume2.h>
+#include <Protocol/LoadedImage.h>
+#include <Protocol/PciIo.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/DebugLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiLib.h>
+#include <Library/BaseMemoryLib.h>
+#include "PlatformBm.h"
+
+STATIC PLATFORM_SERIAL_CONSOLE mSerialConsole = {
+ //
+ // VENDOR_DEVICE_PATH SerialDxe
+ //
+ {
+ { HARDWARE_DEVICE_PATH, HW_VENDOR_DP, DP_NODE_LEN (VENDOR_DEVICE_PATH) },
+ SERIAL_DXE_FILE_GUID
+ },
+
+ //
+ // UART_DEVICE_PATH Uart
+ //
+ {
+ { MESSAGING_DEVICE_PATH, MSG_UART_DP, DP_NODE_LEN (UART_DEVICE_PATH) },
+ 0, // Reserved
+ FixedPcdGet64 (PcdUartDefaultBaudRate), // BaudRate
+ FixedPcdGet8 (PcdUartDefaultDataBits), // DataBits
+ FixedPcdGet8 (PcdUartDefaultParity), // Parity
+ FixedPcdGet8 (PcdUartDefaultStopBits) // StopBits
+ },
+
+ //
+ // VENDOR_DEFINED_DEVICE_PATH TermType
+ //
+ {
+ {
+ MESSAGING_DEVICE_PATH, MSG_VENDOR_DP,
+ DP_NODE_LEN (VENDOR_DEFINED_DEVICE_PATH)
+ }
+ //
+ // Guid to be filled in dynamically
+ //
+ },
+
+ //
+ // EFI_DEVICE_PATH_PROTOCOL End
+ //
+ {
+ END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE,
+ DP_NODE_LEN (EFI_DEVICE_PATH_PROTOCOL)
+ }
+};
+
+STATIC PLATFORM_USB_KEYBOARD mUsbKeyboard = {
+ //
+ // USB_CLASS_DEVICE_PATH Keyboard
+ //
+ {
+ {
+ MESSAGING_DEVICE_PATH, MSG_USB_CLASS_DP,
+ DP_NODE_LEN (USB_CLASS_DEVICE_PATH)
+ },
+ 0xFFFF, // VendorId: any
+ 0xFFFF, // ProductId: any
+ 3, // DeviceClass: HID
+ 1, // DeviceSubClass: boot
+ 1 // DeviceProtocol: keyboard
+ },
+
+ //
+ // EFI_DEVICE_PATH_PROTOCOL End
+ //
+ {
+ END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE,
+ DP_NODE_LEN (EFI_DEVICE_PATH_PROTOCOL)
+ }
+};
+
+/**
+ Locate all handles that carry the specified protocol, filter them with a
+ callback function, and pass each handle that passes the filter to another
+ callback.
+
+ @param[in] ProtocolGuid The protocol to look for.
+
+ @param[in] Filter The filter function to pass each handle to. If this
+ parameter is NULL, then all handles are processed.
+
+ @param[in] Process The callback function to pass each handle to that
+ clears the filter.
+**/
+VOID
+FilterAndProcess (
+ IN EFI_GUID *ProtocolGuid,
+ IN FILTER_FUNCTION Filter OPTIONAL,
+ IN CALLBACK_FUNCTION Process
+ )
+{
+ EFI_STATUS Status;
+ EFI_HANDLE *Handles;
+ UINTN NoHandles;
+ UINTN Idx;
+
+ Status = gBS->LocateHandleBuffer (ByProtocol, ProtocolGuid,
+ NULL /* SearchKey */, &NoHandles, &Handles);
+ if (EFI_ERROR (Status)) {
+ //
+ // This is not an error, just an informative condition.
+ //
+ DEBUG ((DEBUG_VERBOSE, "%a: %g: %r\n", __FUNCTION__, ProtocolGuid,
+ Status));
+ return;
+ }
+
+ ASSERT (NoHandles > 0);
+ for (Idx = 0; Idx < NoHandles; ++Idx) {
+ CHAR16 *DevicePathText;
+ STATIC CHAR16 Fallback[] = L"<device path unavailable>";
+
+ //
+ // The ConvertDevicePathToText () function handles NULL input transparently.
+ //
+ DevicePathText = ConvertDevicePathToText (
+ DevicePathFromHandle (Handles[Idx]),
+ FALSE, // DisplayOnly
+ FALSE // AllowShortcuts
+ );
+ if (DevicePathText == NULL) {
+ DevicePathText = Fallback;
+ }
+
+ if ((Filter == NULL)
+ || (Filter (Handles[Idx], DevicePathText)))
+ {
+ Process (Handles[Idx], DevicePathText);
+ }
+
+ if (DevicePathText != Fallback) {
+ FreePool (DevicePathText);
+ }
+ }
+ gBS->FreePool (Handles);
+}
+
+/**
+ This FILTER_FUNCTION checks if a handle corresponds to a PCI display device.
+
+ @param Handle The handle to check
+ @param ReportText A pointer to a string at the time of the error.
+
+ @retval TURE THe handle corresponds to a PCI display device.
+ @retval FALSE THe handle does not corresponds to a PCI display device.
+**/
+BOOLEAN
+EFIAPI
+IsPciDisplay (
+ IN EFI_HANDLE Handle,
+ IN CONST CHAR16 *ReportText
+ )
+{
+ EFI_STATUS Status;
+ EFI_PCI_IO_PROTOCOL *PciIo;
+ PCI_TYPE00 Pci;
+
+ Status = gBS->HandleProtocol (Handle, &gEfiPciIoProtocolGuid,
+ (VOID**)&PciIo);
+ if (EFI_ERROR (Status)) {
+ //
+ // This is not an error worth reporting.
+ //
+ return FALSE;
+ }
+
+ Status = PciIo->Pci.Read (PciIo, EfiPciIoWidthUint32, 0 /* Offset */,
+ sizeof Pci / sizeof (UINT32), &Pci);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a: %s: %r\n", __FUNCTION__, ReportText, Status));
+ return FALSE;
+ }
+
+ return IS_PCI_DISPLAY (&Pci);
+}
+
+/**
+ This CALLBACK_FUNCTION attempts to connect a handle non-recursively, asking
+ the matching driver to produce all first-level child handles.
+
+ @param Handle The handle to connect.
+ @param ReportText A pointer to a string at the time of the error.
+
+ @retval VOID
+**/
+VOID
+EFIAPI
+Connect (
+ IN EFI_HANDLE Handle,
+ IN CONST CHAR16 *ReportText
+ )
+{
+ EFI_STATUS Status;
+
+ Status = gBS->ConnectController (
+ Handle, // ControllerHandle
+ NULL, // DriverImageHandle
+ NULL, // RemainingDevicePath -- produce all children
+ FALSE // Recursive
+ );
+ DEBUG ((EFI_ERROR (Status) ? DEBUG_ERROR : DEBUG_VERBOSE, "%a: %s: %r\n",
+ __FUNCTION__, ReportText, Status));
+}
+
+/**
+ This CALLBACK_FUNCTION retrieves the EFI_DEVICE_PATH_PROTOCOL from the
+ handle, and adds it to ConOut and ErrOut.
+
+ @param Handle The handle to retrieves.
+ @param ReportText A pointer to a string at the time of the error.
+
+ @retval VOID
+**/
+VOID
+EFIAPI
+AddOutput (
+ IN EFI_HANDLE Handle,
+ IN CONST CHAR16 *ReportText
+ )
+{
+ EFI_STATUS Status;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+
+ DevicePath = DevicePathFromHandle (Handle);
+ if (DevicePath == NULL) {
+ DEBUG ((DEBUG_ERROR, "%a: %s: handle %p: device path not found\n",
+ __FUNCTION__, ReportText, Handle));
+ return;
+ }
+
+ Status = EfiBootManagerUpdateConsoleVariable (ConOut, DevicePath, NULL);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a: %s: adding to ConOut: %r\n", __FUNCTION__,
+ ReportText, Status));
+ return;
+ }
+
+ Status = EfiBootManagerUpdateConsoleVariable (ErrOut, DevicePath, NULL);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a: %s: adding to ErrOut: %r\n", __FUNCTION__,
+ ReportText, Status));
+ return;
+ }
+
+ DEBUG ((DEBUG_VERBOSE, "%a: %s: added to ConOut and ErrOut\n", __FUNCTION__,
+ ReportText));
+}
+/**
+ Register the boot option.
+
+ @param FileGuid File Guid.
+ @param Description Option descriptor.
+ @param Attributes Option Attributes.
+
+ @retval VOID
+**/
+VOID
+PlatformRegisterFvBootOption (
+ IN EFI_GUID *FileGuid,
+ IN CHAR16 *Description,
+ IN UINT32 Attributes
+ )
+{
+ EFI_STATUS Status;
+ INTN OptionIndex;
+ EFI_BOOT_MANAGER_LOAD_OPTION NewOption;
+ EFI_BOOT_MANAGER_LOAD_OPTION *BootOptions;
+ UINTN BootOptionCount;
+ MEDIA_FW_VOL_FILEPATH_DEVICE_PATH FileNode;
+ EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+
+ Status = gBS->HandleProtocol (
+ gImageHandle,
+ &gEfiLoadedImageProtocolGuid,
+ (VOID **) &LoadedImage
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ EfiInitializeFwVolDevicepathNode (&FileNode, FileGuid);
+ DevicePath = DevicePathFromHandle (LoadedImage->DeviceHandle);
+ ASSERT (DevicePath != NULL);
+ DevicePath = AppendDevicePathNode (
+ DevicePath,
+ (EFI_DEVICE_PATH_PROTOCOL *) &FileNode
+ );
+ ASSERT (DevicePath != NULL);
+
+ Status = EfiBootManagerInitializeLoadOption (
+ &NewOption,
+ LoadOptionNumberUnassigned,
+ LoadOptionTypeBoot,
+ Attributes,
+ Description,
+ DevicePath,
+ NULL,
+ 0
+ );
+ ASSERT_EFI_ERROR (Status);
+ FreePool (DevicePath);
+
+ BootOptions = EfiBootManagerGetLoadOptions (
+ &BootOptionCount, LoadOptionTypeBoot
+ );
+
+ OptionIndex = EfiBootManagerFindLoadOption (
+ &NewOption, BootOptions, BootOptionCount
+ );
+
+ if (OptionIndex == -1) {
+ Status = EfiBootManagerAddLoadOptionVariable (&NewOption, MAX_UINTN);
+ ASSERT_EFI_ERROR (Status);
+ }
+ EfiBootManagerFreeLoadOption (&NewOption);
+ EfiBootManagerFreeLoadOptions (BootOptions, BootOptionCount);
+}
+
+/**
+ Remove all MemoryMapped (...)/FvFile (...) and Fv (...)/FvFile (...) boot options
+ whose device paths do not resolve exactly to an FvFile in the system.
+
+ This removes any boot options that point to binaries built into the firmware
+ and have become stale due to any of the following:
+ - FvMain's base address or size changed (historical),
+ - FvMain's FvNameGuid changed,
+ - the FILE_GUID of the pointed-to binary changed,
+ - the referenced binary is no longer built into the firmware.
+
+ EfiBootManagerFindLoadOption () used in PlatformRegisterFvBootOption () only
+ avoids exact duplicates.
+**/
+VOID
+RemoveStaleFvFileOptions (
+ VOID
+ )
+{
+ EFI_BOOT_MANAGER_LOAD_OPTION *BootOptions;
+ UINTN BootOptionCount;
+ UINTN Index;
+
+ BootOptions = EfiBootManagerGetLoadOptions (&BootOptionCount,
+ LoadOptionTypeBoot);
+
+ for (Index = 0; Index < BootOptionCount; ++Index) {
+ EFI_DEVICE_PATH_PROTOCOL *Node1, *Node2, *SearchNode;
+ EFI_STATUS Status;
+ EFI_HANDLE FvHandle;
+
+ //
+ // If the device path starts with neither MemoryMapped (...) nor Fv (...),
+ // then keep the boot option.
+ //
+ Node1 = BootOptions[Index].FilePath;
+ if (!(DevicePathType (Node1) == HARDWARE_DEVICE_PATH
+ && DevicePathSubType (Node1) == HW_MEMMAP_DP)
+ && !(DevicePathType (Node1) == MEDIA_DEVICE_PATH
+ && DevicePathSubType (Node1) == MEDIA_PIWG_FW_VOL_DP))
+ {
+ continue;
+ }
+
+ //
+ // If the second device path node is not FvFile (...), then keep the boot
+ // option.
+ //
+ Node2 = NextDevicePathNode (Node1);
+ if ((DevicePathType (Node2) != MEDIA_DEVICE_PATH)
+ || (DevicePathSubType (Node2) != MEDIA_PIWG_FW_FILE_DP))
+ {
+ continue;
+ }
+
+ //
+ // Locate the Firmware Volume2 protocol instance that is denoted by the
+ // boot option. If this lookup fails (i.e., the boot option references a
+ // firmware volume that doesn't exist), then we'll proceed to delete the
+ // boot option.
+ //
+ SearchNode = Node1;
+ Status = gBS->LocateDevicePath (&gEfiFirmwareVolume2ProtocolGuid,
+ &SearchNode, &FvHandle);
+
+ if (!EFI_ERROR (Status)) {
+ //
+ // The firmware volume was found; now let's see if it contains the FvFile
+ // identified by GUID.
+ //
+ EFI_FIRMWARE_VOLUME2_PROTOCOL *FvProtocol;
+ MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *FvFileNode;
+ UINTN BufferSize;
+ EFI_FV_FILETYPE FoundType;
+ EFI_FV_FILE_ATTRIBUTES FileAttributes;
+ UINT32 AuthenticationStatus;
+
+ Status = gBS->HandleProtocol (FvHandle, &gEfiFirmwareVolume2ProtocolGuid,
+ (VOID **)&FvProtocol);
+ ASSERT_EFI_ERROR (Status);
+
+ FvFileNode = (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *)Node2;
+ //
+ // Buffer==NULL means we request metadata only: BufferSize, FoundType,
+ // FileAttributes.
+ //
+ Status = FvProtocol->ReadFile (
+ FvProtocol,
+ &FvFileNode->FvFileName, // NameGuid
+ NULL, // Buffer
+ &BufferSize,
+ &FoundType,
+ &FileAttributes,
+ &AuthenticationStatus
+ );
+ if (!EFI_ERROR (Status)) {
+ //
+ // The FvFile was found. Keep the boot option.
+ //
+ continue;
+ }
+ }
+
+ //
+ // Delete the boot option.
+ //
+ Status = EfiBootManagerDeleteLoadOptionVariable (
+ BootOptions[Index].OptionNumber, LoadOptionTypeBoot);
+ DEBUG_CODE (
+ CHAR16 *DevicePathString;
+
+ DevicePathString = ConvertDevicePathToText (BootOptions[Index].FilePath,
+ FALSE, FALSE);
+ DEBUG ((
+ EFI_ERROR (Status) ? EFI_D_WARN : DEBUG_VERBOSE,
+ "%a: removing stale Boot#%04x %s: %r\n",
+ __FUNCTION__,
+ (UINT32)BootOptions[Index].OptionNumber,
+ DevicePathString == NULL ? L"<unavailable>" : DevicePathString,
+ Status
+ ));
+ if (DevicePathString != NULL) {
+ FreePool (DevicePathString);
+ }
+ );
+ }
+
+ EfiBootManagerFreeLoadOptions (BootOptions, BootOptionCount);
+}
+
+/**
+ Register the boot option And Keys.
+
+ @param VOID
+
+ @retval VOID
+**/
+VOID
+PlatformRegisterOptionsAndKeys (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ EFI_INPUT_KEY Enter;
+ EFI_INPUT_KEY F2;
+ EFI_INPUT_KEY Esc;
+ EFI_BOOT_MANAGER_LOAD_OPTION BootOption;
+
+ //
+ // Register ENTER as CONTINUE key
+ //
+ Enter.ScanCode = SCAN_NULL;
+ Enter.UnicodeChar = CHAR_CARRIAGE_RETURN;
+ Status = EfiBootManagerRegisterContinueKeyOption (0, &Enter, NULL);
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Map F2 and ESC to Boot Manager Menu
+ //
+ F2.ScanCode = SCAN_F2;
+ F2.UnicodeChar = CHAR_NULL;
+ Esc.ScanCode = SCAN_ESC;
+ Esc.UnicodeChar = CHAR_NULL;
+ Status = EfiBootManagerGetBootManagerMenu (&BootOption);
+ ASSERT_EFI_ERROR (Status);
+ Status = EfiBootManagerAddKeyOptionVariable (
+ NULL, (UINT16) BootOption.OptionNumber, 0, &F2, NULL
+ );
+ ASSERT (Status == EFI_SUCCESS || Status == EFI_ALREADY_STARTED);
+ Status = EfiBootManagerAddKeyOptionVariable (
+ NULL, (UINT16) BootOption.OptionNumber, 0, &Esc, NULL
+ );
+ ASSERT (Status == EFI_SUCCESS || Status == EFI_ALREADY_STARTED);
+}
+
+//
+// BDS Platform Functions
+//
+/**
+ Do the platform init, can be customized by OEM/IBV
+ Possible things that can be done in PlatformBootManagerBeforeConsole:
+ > Update console variable: 1. include hot-plug devices;
+ > 2. Clear ConIn and add SOL for AMT
+ > Register new Driver#### or Boot####
+ > Register new Key####: e.g.: F12
+ > Signal ReadyToLock event
+ > Authentication action: 1. connect Auth devices;
+ > 2. Identify auto logon user.
+**/
+VOID
+EFIAPI
+PlatformBootManagerBeforeConsole (
+ VOID
+ )
+{
+ RETURN_STATUS PcdStatus;
+
+ //
+ // Signal EndOfDxe PI Event
+ //
+ EfiEventGroupSignal (&gEfiEndOfDxeEventGroupGuid);
+
+ //
+ // Dispatch deferred images after EndOfDxe event.
+ //
+ EfiBootManagerDispatchDeferredImages ();
+
+ //
+ // Locate the PCI root bridges and make the PCI bus driver connect each,
+ // non-recursively. This will produce a number of child handles with PciIo on
+ // them.
+ //
+ FilterAndProcess (&gEfiPciRootBridgeIoProtocolGuid, NULL, Connect);
+
+ //
+ // Signal the ACPI platform driver that it can download QEMU ACPI tables.
+ //
+ EfiEventGroupSignal (&gRootBridgesConnectedEventGroupGuid);
+
+ //
+ // Find all display class PCI devices (using the handles from the previous
+ // step), and connect them non-recursively. This should produce a number of
+ // child handles with GOPs on them.
+ //
+ FilterAndProcess (&gEfiPciIoProtocolGuid, IsPciDisplay, Connect);
+
+ //
+ // Now add the device path of all handles with GOP on them to ConOut and
+ // ErrOut.
+ //
+ FilterAndProcess (&gEfiGraphicsOutputProtocolGuid, NULL, AddOutput);
+
+ //
+ // Add the hardcoded short-form USB keyboard device path to ConIn.
+ //
+ EfiBootManagerUpdateConsoleVariable (ConIn,
+ (EFI_DEVICE_PATH_PROTOCOL *)&mUsbKeyboard, NULL);
+
+ //
+ // Add the hardcoded serial console device path to ConIn, ConOut, ErrOut.
+ //
+ CopyGuid (&mSerialConsole.TermType.Guid, &gEfiTtyTermGuid);
+ EfiBootManagerUpdateConsoleVariable (ConIn,
+ (EFI_DEVICE_PATH_PROTOCOL *)&mSerialConsole, NULL);
+ EfiBootManagerUpdateConsoleVariable (ConOut,
+ (EFI_DEVICE_PATH_PROTOCOL *)&mSerialConsole, NULL);
+ EfiBootManagerUpdateConsoleVariable (ErrOut,
+ (EFI_DEVICE_PATH_PROTOCOL *)&mSerialConsole, NULL);
+
+ //
+ // Set the front page timeout from the QEMU configuration.
+ //
+ PcdStatus = PcdSet16S (PcdPlatformBootTimeOut,
+ GetFrontPageTimeoutFromQemu ());
+ ASSERT_RETURN_ERROR (PcdStatus);
+
+ //
+ // Register platform-specific boot options and keyboard shortcuts.
+ //
+ PlatformRegisterOptionsAndKeys ();
+}
+
+/**
+ Do the platform specific action after the console is ready
+ Possible things that can be done in PlatformBootManagerAfterConsole:
+ > Console post action:
+ > Dynamically switch output mode from 100x31 to 80x25 for certain senarino
+ > Signal console ready platform customized event
+ > Run diagnostics like memory testing
+ > Connect certain devices
+ > Dispatch aditional option roms
+ > Special boot: e.g.: USB boot, enter UI
+**/
+VOID
+EFIAPI
+PlatformBootManagerAfterConsole (
+ VOID
+ )
+{
+ //
+ // Show the splash screen.
+ //
+ BootLogoEnableLogo ();
+
+ //
+ // Connect the rest of the devices.
+ //
+ EfiBootManagerConnectAll ();
+
+ //
+ // Process QEMU's -kernel command line option. Note that the kernel booted
+ // this way should receive ACPI tables, which is why we connect all devices
+ // first (see above) -- PCI enumeration blocks ACPI table installation, if
+ // there is a PCI host.
+ //
+ TryRunningQemuKernel ();
+
+ //
+ // Enumerate all possible boot options, then filter and reorder them based on
+ // the QEMU configuration.
+ //
+ EfiBootManagerRefreshAllBootOption ();
+
+ //
+ // Register UEFI Shell
+ //
+ PlatformRegisterFvBootOption (
+ &gUefiShellFileGuid, L"EFI Internal Shell", LOAD_OPTION_ACTIVE
+ );
+
+ RemoveStaleFvFileOptions ();
+ SetBootOrderFromQemu ();
+}
+
+/**
+ This function is called each second during the boot manager waits the
+ timeout.
+
+ @param TimeoutRemain The remaining timeout.
+**/
+VOID
+EFIAPI
+PlatformBootManagerWaitCallback (
+ IN UINT16 TimeoutRemain
+ )
+{
+ EFI_GRAPHICS_OUTPUT_BLT_PIXEL_UNION Black;
+ EFI_GRAPHICS_OUTPUT_BLT_PIXEL_UNION White;
+ UINT16 Timeout;
+
+ Timeout = PcdGet16 (PcdPlatformBootTimeOut);
+
+ Black.Raw = 0x00000000;
+ White.Raw = 0x00FFFFFF;
+
+ BootLogoUpdateProgress (
+ White.Pixel,
+ Black.Pixel,
+ L"Start boot option",
+ White.Pixel,
+ (Timeout - TimeoutRemain) * 100 / Timeout,
+ 0
+ );
+}
+
+/**
+ The function is called when no boot option could be launched,
+ including platform recovery options and options pointing to applications
+ built into firmware volumes.
+
+ If this function returns, BDS attempts to enter an infinite loop.
+**/
+VOID
+EFIAPI
+PlatformBootManagerUnableToBoot (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ EFI_INPUT_KEY Key;
+ EFI_BOOT_MANAGER_LOAD_OPTION BootManagerMenu;
+ UINTN Index;
+
+ //
+ // BootManagerMenu doesn't contain the correct information when return status
+ // is EFI_NOT_FOUND.
+ //
+ Status = EfiBootManagerGetBootManagerMenu (&BootManagerMenu);
+ if (EFI_ERROR (Status)) {
+ return;
+ }
+ //
+ // Normally BdsDxe does not print anything to the system console, but this is
+ // a last resort -- the end-user will likely not see any DEBUG messages
+ // logged in this situation.
+ //
+ // AsciiPrint () will NULL-check gST->ConOut internally. We check gST->ConIn
+ // here to see if it makes sense to request and wait for a keypress.
+ //
+ if (gST->ConIn != NULL) {
+ AsciiPrint (
+ "%a: No bootable option or device was found.\n"
+ "%a: Press any key to enter the Boot Manager Menu.\n",
+ gEfiCallerBaseName,
+ gEfiCallerBaseName
+ );
+ Status = gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &Index);
+ ASSERT_EFI_ERROR (Status);
+ ASSERT (Index == 0);
+
+ //
+ // Drain any queued keys.
+ //
+ while (!EFI_ERROR (gST->ConIn->ReadKeyStroke (gST->ConIn, &Key))) {
+ //
+ // just throw away Key
+ //
+ }
+ }
+
+ for (;;) {
+ EfiBootManagerBoot (&BootManagerMenu);
+ }
+}
diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBm.h b/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBm.h
new file mode 100644
index 0000000000..f20c78252f
--- /dev/null
+++ b/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBm.h
@@ -0,0 +1,112 @@
+/** @file
+ Head file for BDS Platform specific code
+
+ Copyright (c) 2022 Loongson Technology Corporation Limited. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef PLATFORM_BM_H_
+#define PLATFORM_BM_H_
+
+#include <Library/DevicePathLib.h>
+
+#define DP_NODE_LEN(Type) { (UINT8)sizeof (Type), (UINT8)(sizeof (Type) >> 8) }
+
+#define SERIAL_DXE_FILE_GUID { \
+ 0xD3987D4B, 0x971A, 0x435F, \
+ { 0x8C, 0xAF, 0x49, 0x67, 0xEB, 0x62, 0x72, 0x41 } \
+ }
+
+#define ALIGN_UP(addr, align) \
+ ((addr + (typeof (addr)) align - 1) & ~((typeof (addr)) align - 1))
+
+#pragma pack (1)
+typedef struct {
+ VENDOR_DEVICE_PATH SerialDxe;
+ UART_DEVICE_PATH Uart;
+ VENDOR_DEFINED_DEVICE_PATH TermType;
+ EFI_DEVICE_PATH_PROTOCOL End;
+} PLATFORM_SERIAL_CONSOLE;
+#pragma pack ()
+
+#pragma pack (1)
+typedef struct {
+ USB_CLASS_DEVICE_PATH Keyboard;
+ EFI_DEVICE_PATH_PROTOCOL End;
+} PLATFORM_USB_KEYBOARD;
+#pragma pack ()
+
+/**
+ Check if the handle satisfies a particular condition.
+
+ @param[in] Handle The handle to check.
+ @param[in] ReportText A caller-allocated string passed in for reporting
+ purposes. It must never be NULL.
+
+ @retval TRUE The condition is satisfied.
+ @retval FALSE Otherwise. This includes the case when the condition could not
+ be fully evaluated due to an error.
+**/
+typedef
+BOOLEAN
+(EFIAPI *FILTER_FUNCTION) (
+ IN EFI_HANDLE Handle,
+ IN CONST CHAR16 *ReportText
+ );
+
+/**
+ Process a handle.
+
+ @param[in] Handle The handle to process.
+ @param[in] ReportText A caller-allocated string passed in for reporting
+ purposes. It must never be NULL.
+**/
+typedef
+VOID
+(EFIAPI *CALLBACK_FUNCTION) (
+ IN EFI_HANDLE Handle,
+ IN CONST CHAR16 *ReportText
+ );
+
+/**
+ * execute from kernel entry point.
+ *
+ * @param[in] Argc The count of args.
+ * @param[in] Argv The pointer to args array.
+ * @param[in] Bpi The pointer to bootparaminterface struct.
+ * @param[in] Vec The fourth args for kernel.
+ ***/
+typedef
+VOID
+(EFIAPI *EFI_KERNEL_ENTRY_POINT) (
+ IN UINTN Argc,
+ IN VOID *Argv,
+ IN VOID *Bpi,
+ IN VOID *Vec
+ );
+
+/**
+ Download the kernel, the initial ramdisk, and the kernel command line from
+ QEMU's fw_cfg. Construct a minimal SimpleFileSystem that contains the two
+ image files, and load and start the kernel from it.
+
+ The kernel will be instructed via its command line to load the initrd from
+ the same Simple FileSystem.
+
+ @retval EFI_NOT_FOUND Kernel image was not found.
+ @retval EFI_OUT_OF_RESOURCES Memory allocation failed.
+ @retval EFI_PROTOCOL_ERROR Unterminated kernel command line.
+
+ @return Error codes from any of the underlying
+ functions. On success, the function doesn't
+ return.
+**/
+EFI_STATUS
+EFIAPI
+TryRunningQemuKernel (
+ VOID
+ );
+
+#endif // PLATFORM_BM_H_
diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf b/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf
new file mode 100644
index 0000000000..0ea6fea5c5
--- /dev/null
+++ b/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf
@@ -0,0 +1,75 @@
+## @file
+# Implementation for PlatformBootManagerLib library class interfaces.
+#
+# Copyright (c) 2022 Loongson Technology Corporation Limited. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = PlatformBootManagerLib
+ FILE_GUID = 469184E8-FADA-41E4-8823-012CA19B40D4
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = PlatformBootManagerLib|DXE_DRIVER
+
+#
+# VALID_ARCHITECTURES = LOONGARCH64
+#
+
+[Sources]
+ PlatformBm.c
+ QemuKernel.c
+
+[Packages]
+ Platform/Loongson/LoongArchQemuPkg/Loongson.dec
+ MdeModulePkg/MdeModulePkg.dec
+ MdePkg/MdePkg.dec
+ OvmfPkg/OvmfPkg.dec
+ ShellPkg/ShellPkg.dec
+
+[LibraryClasses]
+ BaseLib
+ BaseMemoryLib
+ BootLogoLib
+ DebugLib
+ DevicePathLib
+ MemoryAllocationLib
+ PcdLib
+ PrintLib
+ QemuBootOrderLib
+ QemuLoadImageLib
+ QemuFwCfgLib
+ UefiBootManagerLib
+ UefiBootServicesTableLib
+ UefiLib
+ UefiRuntimeServicesTableLib
+
+[FixedPcd]
+ gEfiMdePkgTokenSpaceGuid.PcdUartDefaultBaudRate
+ gEfiMdePkgTokenSpaceGuid.PcdUartDefaultDataBits
+ gEfiMdePkgTokenSpaceGuid.PcdUartDefaultParity
+ gEfiMdePkgTokenSpaceGuid.PcdUartDefaultStopBits
+
+[Pcd]
+ gEfiMdePkgTokenSpaceGuid.PcdPlatformBootTimeOut
+
+[Guids]
+ gEfiFileInfoGuid
+ gEfiFileSystemInfoGuid
+ gEfiFileSystemVolumeLabelInfoIdGuid
+ gEfiEndOfDxeEventGroupGuid
+ gRootBridgesConnectedEventGroupGuid
+ gUefiShellFileGuid
+ gEfiLoongsonBootparamsTableGuid ## SOMETIMES_PRODUCES ## SystemTable
+ gEfiTtyTermGuid
+
+[Protocols]
+ gEfiDevicePathProtocolGuid
+ gEfiFirmwareVolume2ProtocolGuid
+ gEfiGraphicsOutputProtocolGuid
+ gEfiLoadedImageProtocolGuid
+ gEfiPciRootBridgeIoProtocolGuid
+ gEfiSimpleFileSystemProtocolGuid
diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/QemuKernel.c b/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/QemuKernel.c
new file mode 100644
index 0000000000..386003a8d7
--- /dev/null
+++ b/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/QemuKernel.c
@@ -0,0 +1,81 @@
+/** @file
+ Try to run Linux kernel.
+
+ Copyright (c) 2022 Loongson Technology Corporation Limited. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+ @par Glossary:
+ - mem - Memory
+ - Bpi - Boot Parameter Interface
+ - FwCfg - FirmWare Configure
+**/
+
+#include <Library/QemuLoadImageLib.h>
+#include <Library/ReportStatusCodeLib.h>
+
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/DevicePathLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+
+/**
+ Download the kernel, the initial ramdisk, and the kernel command line from
+ QEMU's fw_cfg. Construct a minimal SimpleFileSystem that contains the two
+ image files, and load and start the kernel from it.
+
+ The kernel will be instructed via its command line to load the initrd from
+ the same Simple FileSystem.
+
+ @retval EFI_NOT_FOUND Kernel image was not found.
+ @retval EFI_OUT_OF_RESOURCES Memory allocation failed.
+ @retval EFI_PROTOCOL_ERROR Unterminated kernel command line.
+
+ @return Error codes from any of the underlying
+ functions. On success, the function doesn't
+ return.
+**/
+EFI_STATUS
+TryRunningQemuKernel (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ EFI_HANDLE KernelImageHandle;
+
+ Status = QemuLoadKernelImage (&KernelImageHandle);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Signal the EFI_EVENT_GROUP_READY_TO_BOOT event.
+ //
+ EfiSignalEventReadyToBoot ();
+
+ REPORT_STATUS_CODE (
+ EFI_PROGRESS_CODE,
+ (EFI_SOFTWARE_DXE_BS_DRIVER | EFI_SW_DXE_BS_PC_READY_TO_BOOT_EVENT)
+ );
+
+ //
+ // Start the image.
+ //
+ Status = QemuStartKernelImage (&KernelImageHandle);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((
+ DEBUG_ERROR,
+ "%a: QemuStartKernelImage(): %r\n",
+ __FUNCTION__,
+ Status
+ ));
+ }
+
+ QemuUnloadKernelImage (KernelImageHandle);
+
+ return Status;
+}
--
2.31.1
-=-=-=-=-=-=-=-=-=-=-=-
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-=-=-=-=-=-=-=-=-=-=-=-Reviewed-by: Chao Li <lichao@loongson.cn>
Thanks,
Chao
--------
On 11月 11 2022, at 5:12 下午, xianglai li <lixianglai@loongson.cn> wrote:
> The Library provides Boot Manager interfaces.
>
>
>
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4054
>
>
> Cc: Bibo Mao <maobibo@loongson.cn>
> Cc: Chao Li <lichao@loongson.cn>
> Cc: Leif Lindholm <quic_llindhol@quicinc.com>
> Cc: Liming Gao <gaoliming@byosoft.com.cn>
> Cc: Michael D Kinney <michael.d.kinney@intel.com>
> Signed-off-by: xianglai li <lixianglai@loongson.cn>
> ---
> .../PlatformBootManagerLib/PlatformBm.c | 742 ++++++++++++++++++
> .../PlatformBootManagerLib/PlatformBm.h | 112 +++
> .../PlatformBootManagerLib.inf | 75 ++
> .../PlatformBootManagerLib/QemuKernel.c | 81 ++
> 4 files changed, 1010 insertions(+)
> create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBm.c
> create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBm.h
> create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf
> create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/QemuKernel.c
>
>
> diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBm.c b/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBm.c
> new file mode 100644
> index 0000000000..eb7f4241f0
> --- /dev/null
> +++ b/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBm.c
> @@ -0,0 +1,742 @@
> +/** @file
> + Implementation for PlatformBootManagerLib library class interfaces.
> +
> + Copyright (c) 2022 Loongson Technology Corporation Limited. All rights reserved.<BR>
> +
> + SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include <IndustryStandard/Pci22.h>
> +#include <Library/BootLogoLib.h>
> +#include <Library/PcdLib.h>
> +#include <Library/QemuBootOrderLib.h>
> +#include <Library/UefiBootManagerLib.h>
> +#include <Protocol/FirmwareVolume2.h>
> +#include <Protocol/LoadedImage.h>
> +#include <Protocol/PciIo.h>
> +#include <Library/UefiBootServicesTableLib.h>
> +#include <Library/DebugLib.h>
> +#include <Library/MemoryAllocationLib.h>
> +#include <Library/UefiLib.h>
> +#include <Library/BaseMemoryLib.h>
> +#include "PlatformBm.h"
> +
> +STATIC PLATFORM_SERIAL_CONSOLE mSerialConsole = {
> + //
> + // VENDOR_DEVICE_PATH SerialDxe
> + //
> + {
> + { HARDWARE_DEVICE_PATH, HW_VENDOR_DP, DP_NODE_LEN (VENDOR_DEVICE_PATH) },
> + SERIAL_DXE_FILE_GUID
> + },
> +
> + //
> + // UART_DEVICE_PATH Uart
> + //
> + {
> + { MESSAGING_DEVICE_PATH, MSG_UART_DP, DP_NODE_LEN (UART_DEVICE_PATH) },
> + 0, // Reserved
> + FixedPcdGet64 (PcdUartDefaultBaudRate), // BaudRate
> + FixedPcdGet8 (PcdUartDefaultDataBits), // DataBits
> + FixedPcdGet8 (PcdUartDefaultParity), // Parity
> + FixedPcdGet8 (PcdUartDefaultStopBits) // StopBits
> + },
> +
> + //
> + // VENDOR_DEFINED_DEVICE_PATH TermType
> + //
> + {
> + {
> + MESSAGING_DEVICE_PATH, MSG_VENDOR_DP,
> + DP_NODE_LEN (VENDOR_DEFINED_DEVICE_PATH)
> + }
> + //
> + // Guid to be filled in dynamically
> + //
> + },
> +
> + //
> + // EFI_DEVICE_PATH_PROTOCOL End
> + //
> + {
> + END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE,
> + DP_NODE_LEN (EFI_DEVICE_PATH_PROTOCOL)
> + }
> +};
> +
> +STATIC PLATFORM_USB_KEYBOARD mUsbKeyboard = {
> + //
> + // USB_CLASS_DEVICE_PATH Keyboard
> + //
> + {
> + {
> + MESSAGING_DEVICE_PATH, MSG_USB_CLASS_DP,
> + DP_NODE_LEN (USB_CLASS_DEVICE_PATH)
> + },
> + 0xFFFF, // VendorId: any
> + 0xFFFF, // ProductId: any
> + 3, // DeviceClass: HID
> + 1, // DeviceSubClass: boot
> + 1 // DeviceProtocol: keyboard
> + },
> +
> + //
> + // EFI_DEVICE_PATH_PROTOCOL End
> + //
> + {
> + END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE,
> + DP_NODE_LEN (EFI_DEVICE_PATH_PROTOCOL)
> + }
> +};
> +
> +/**
> + Locate all handles that carry the specified protocol, filter them with a
> + callback function, and pass each handle that passes the filter to another
> + callback.
> +
> + @param[in] ProtocolGuid The protocol to look for.
> +
> + @param[in] Filter The filter function to pass each handle to. If this
> + parameter is NULL, then all handles are processed.
> +
> + @param[in] Process The callback function to pass each handle to that
> + clears the filter.
> +**/
> +VOID
> +FilterAndProcess (
> + IN EFI_GUID *ProtocolGuid,
> + IN FILTER_FUNCTION Filter OPTIONAL,
> + IN CALLBACK_FUNCTION Process
> + )
> +{
> + EFI_STATUS Status;
> + EFI_HANDLE *Handles;
> + UINTN NoHandles;
> + UINTN Idx;
> +
> + Status = gBS->LocateHandleBuffer (ByProtocol, ProtocolGuid,
> + NULL /* SearchKey */, &NoHandles, &Handles);
> + if (EFI_ERROR (Status)) {
> + //
> + // This is not an error, just an informative condition.
> + //
> + DEBUG ((DEBUG_VERBOSE, "%a: %g: %r\n", __FUNCTION__, ProtocolGuid,
> + Status));
> + return;
> + }
> +
> + ASSERT (NoHandles > 0);
> + for (Idx = 0; Idx < NoHandles; ++Idx) {
> + CHAR16 *DevicePathText;
> + STATIC CHAR16 Fallback[] = L"<device path unavailable>";
> +
> + //
> + // The ConvertDevicePathToText () function handles NULL input transparently.
> + //
> + DevicePathText = ConvertDevicePathToText (
> + DevicePathFromHandle (Handles[Idx]),
> + FALSE, // DisplayOnly
> + FALSE // AllowShortcuts
> + );
> + if (DevicePathText == NULL) {
> + DevicePathText = Fallback;
> + }
> +
> + if ((Filter == NULL)
> + || (Filter (Handles[Idx], DevicePathText)))
> + {
> + Process (Handles[Idx], DevicePathText);
> + }
> +
> + if (DevicePathText != Fallback) {
> + FreePool (DevicePathText);
> + }
> + }
> + gBS->FreePool (Handles);
> +}
> +
> +/**
> + This FILTER_FUNCTION checks if a handle corresponds to a PCI display device.
> +
> + @param Handle The handle to check
> + @param ReportText A pointer to a string at the time of the error.
> +
> + @retval TURE THe handle corresponds to a PCI display device.
> + @retval FALSE THe handle does not corresponds to a PCI display device.
> +**/
> +BOOLEAN
> +EFIAPI
> +IsPciDisplay (
> + IN EFI_HANDLE Handle,
> + IN CONST CHAR16 *ReportText
> + )
> +{
> + EFI_STATUS Status;
> + EFI_PCI_IO_PROTOCOL *PciIo;
> + PCI_TYPE00 Pci;
> +
> + Status = gBS->HandleProtocol (Handle, &gEfiPciIoProtocolGuid,
> + (VOID**)&PciIo);
> + if (EFI_ERROR (Status)) {
> + //
> + // This is not an error worth reporting.
> + //
> + return FALSE;
> + }
> +
> + Status = PciIo->Pci.Read (PciIo, EfiPciIoWidthUint32, 0 /* Offset */,
> + sizeof Pci / sizeof (UINT32), &Pci);
> + if (EFI_ERROR (Status)) {
> + DEBUG ((DEBUG_ERROR, "%a: %s: %r\n", __FUNCTION__, ReportText, Status));
> + return FALSE;
> + }
> +
> + return IS_PCI_DISPLAY (&Pci);
> +}
> +
> +/**
> + This CALLBACK_FUNCTION attempts to connect a handle non-recursively, asking
> + the matching driver to produce all first-level child handles.
> +
> + @param Handle The handle to connect.
> + @param ReportText A pointer to a string at the time of the error.
> +
> + @retval VOID
> +**/
> +VOID
> +EFIAPI
> +Connect (
> + IN EFI_HANDLE Handle,
> + IN CONST CHAR16 *ReportText
> + )
> +{
> + EFI_STATUS Status;
> +
> + Status = gBS->ConnectController (
> + Handle, // ControllerHandle
> + NULL, // DriverImageHandle
> + NULL, // RemainingDevicePath -- produce all children
> + FALSE // Recursive
> + );
> + DEBUG ((EFI_ERROR (Status) ? DEBUG_ERROR : DEBUG_VERBOSE, "%a: %s: %r\n",
> + __FUNCTION__, ReportText, Status));
> +}
> +
> +/**
> + This CALLBACK_FUNCTION retrieves the EFI_DEVICE_PATH_PROTOCOL from the
> + handle, and adds it to ConOut and ErrOut.
> +
> + @param Handle The handle to retrieves.
> + @param ReportText A pointer to a string at the time of the error.
> +
> + @retval VOID
> +**/
> +VOID
> +EFIAPI
> +AddOutput (
> + IN EFI_HANDLE Handle,
> + IN CONST CHAR16 *ReportText
> + )
> +{
> + EFI_STATUS Status;
> + EFI_DEVICE_PATH_PROTOCOL *DevicePath;
> +
> + DevicePath = DevicePathFromHandle (Handle);
> + if (DevicePath == NULL) {
> + DEBUG ((DEBUG_ERROR, "%a: %s: handle %p: device path not found\n",
> + __FUNCTION__, ReportText, Handle));
> + return;
> + }
> +
> + Status = EfiBootManagerUpdateConsoleVariable (ConOut, DevicePath, NULL);
> + if (EFI_ERROR (Status)) {
> + DEBUG ((DEBUG_ERROR, "%a: %s: adding to ConOut: %r\n", __FUNCTION__,
> + ReportText, Status));
> + return;
> + }
> +
> + Status = EfiBootManagerUpdateConsoleVariable (ErrOut, DevicePath, NULL);
> + if (EFI_ERROR (Status)) {
> + DEBUG ((DEBUG_ERROR, "%a: %s: adding to ErrOut: %r\n", __FUNCTION__,
> + ReportText, Status));
> + return;
> + }
> +
> + DEBUG ((DEBUG_VERBOSE, "%a: %s: added to ConOut and ErrOut\n", __FUNCTION__,
> + ReportText));
> +}
> +/**
> + Register the boot option.
> +
> + @param FileGuid File Guid.
> + @param Description Option descriptor.
> + @param Attributes Option Attributes.
> +
> + @retval VOID
> +**/
> +VOID
> +PlatformRegisterFvBootOption (
> + IN EFI_GUID *FileGuid,
> + IN CHAR16 *Description,
> + IN UINT32 Attributes
> + )
> +{
> + EFI_STATUS Status;
> + INTN OptionIndex;
> + EFI_BOOT_MANAGER_LOAD_OPTION NewOption;
> + EFI_BOOT_MANAGER_LOAD_OPTION *BootOptions;
> + UINTN BootOptionCount;
> + MEDIA_FW_VOL_FILEPATH_DEVICE_PATH FileNode;
> + EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;
> + EFI_DEVICE_PATH_PROTOCOL *DevicePath;
> +
> + Status = gBS->HandleProtocol (
> + gImageHandle,
> + &gEfiLoadedImageProtocolGuid,
> + (VOID **) &LoadedImage
> + );
> + ASSERT_EFI_ERROR (Status);
> +
> + EfiInitializeFwVolDevicepathNode (&FileNode, FileGuid);
> + DevicePath = DevicePathFromHandle (LoadedImage->DeviceHandle);
> + ASSERT (DevicePath != NULL);
> + DevicePath = AppendDevicePathNode (
> + DevicePath,
> + (EFI_DEVICE_PATH_PROTOCOL *) &FileNode
> + );
> + ASSERT (DevicePath != NULL);
> +
> + Status = EfiBootManagerInitializeLoadOption (
> + &NewOption,
> + LoadOptionNumberUnassigned,
> + LoadOptionTypeBoot,
> + Attributes,
> + Description,
> + DevicePath,
> + NULL,
> + 0
> + );
> + ASSERT_EFI_ERROR (Status);
> + FreePool (DevicePath);
> +
> + BootOptions = EfiBootManagerGetLoadOptions (
> + &BootOptionCount, LoadOptionTypeBoot
> + );
> +
> + OptionIndex = EfiBootManagerFindLoadOption (
> + &NewOption, BootOptions, BootOptionCount
> + );
> +
> + if (OptionIndex == -1) {
> + Status = EfiBootManagerAddLoadOptionVariable (&NewOption, MAX_UINTN);
> + ASSERT_EFI_ERROR (Status);
> + }
> + EfiBootManagerFreeLoadOption (&NewOption);
> + EfiBootManagerFreeLoadOptions (BootOptions, BootOptionCount);
> +}
> +
> +/**
> + Remove all MemoryMapped (...)/FvFile (...) and Fv (...)/FvFile (...) boot options
> + whose device paths do not resolve exactly to an FvFile in the system.
> +
> + This removes any boot options that point to binaries built into the firmware
> + and have become stale due to any of the following:
> + - FvMain's base address or size changed (historical),
> + - FvMain's FvNameGuid changed,
> + - the FILE_GUID of the pointed-to binary changed,
> + - the referenced binary is no longer built into the firmware.
> +
> + EfiBootManagerFindLoadOption () used in PlatformRegisterFvBootOption () only
> + avoids exact duplicates.
> +**/
> +VOID
> +RemoveStaleFvFileOptions (
> + VOID
> + )
> +{
> + EFI_BOOT_MANAGER_LOAD_OPTION *BootOptions;
> + UINTN BootOptionCount;
> + UINTN Index;
> +
> + BootOptions = EfiBootManagerGetLoadOptions (&BootOptionCount,
> + LoadOptionTypeBoot);
> +
> + for (Index = 0; Index < BootOptionCount; ++Index) {
> + EFI_DEVICE_PATH_PROTOCOL *Node1, *Node2, *SearchNode;
> + EFI_STATUS Status;
> + EFI_HANDLE FvHandle;
> +
> + //
> + // If the device path starts with neither MemoryMapped (...) nor Fv (...),
> + // then keep the boot option.
> + //
> + Node1 = BootOptions[Index].FilePath;
> + if (!(DevicePathType (Node1) == HARDWARE_DEVICE_PATH
> + && DevicePathSubType (Node1) == HW_MEMMAP_DP)
> + && !(DevicePathType (Node1) == MEDIA_DEVICE_PATH
> + && DevicePathSubType (Node1) == MEDIA_PIWG_FW_VOL_DP))
> + {
> + continue;
> + }
> +
> + //
> + // If the second device path node is not FvFile (...), then keep the boot
> + // option.
> + //
> + Node2 = NextDevicePathNode (Node1);
> + if ((DevicePathType (Node2) != MEDIA_DEVICE_PATH)
> + || (DevicePathSubType (Node2) != MEDIA_PIWG_FW_FILE_DP))
> + {
> + continue;
> + }
> +
> + //
> + // Locate the Firmware Volume2 protocol instance that is denoted by the
> + // boot option. If this lookup fails (i.e., the boot option references a
> + // firmware volume that doesn't exist), then we'll proceed to delete the
> + // boot option.
> + //
> + SearchNode = Node1;
> + Status = gBS->LocateDevicePath (&gEfiFirmwareVolume2ProtocolGuid,
> + &SearchNode, &FvHandle);
> +
> + if (!EFI_ERROR (Status)) {
> + //
> + // The firmware volume was found; now let's see if it contains the FvFile
> + // identified by GUID.
> + //
> + EFI_FIRMWARE_VOLUME2_PROTOCOL *FvProtocol;
> + MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *FvFileNode;
> + UINTN BufferSize;
> + EFI_FV_FILETYPE FoundType;
> + EFI_FV_FILE_ATTRIBUTES FileAttributes;
> + UINT32 AuthenticationStatus;
> +
> + Status = gBS->HandleProtocol (FvHandle, &gEfiFirmwareVolume2ProtocolGuid,
> + (VOID **)&FvProtocol);
> + ASSERT_EFI_ERROR (Status);
> +
> + FvFileNode = (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *)Node2;
> + //
> + // Buffer==NULL means we request metadata only: BufferSize, FoundType,
> + // FileAttributes.
> + //
> + Status = FvProtocol->ReadFile (
> + FvProtocol,
> + &FvFileNode->FvFileName, // NameGuid
> + NULL, // Buffer
> + &BufferSize,
> + &FoundType,
> + &FileAttributes,
> + &AuthenticationStatus
> + );
> + if (!EFI_ERROR (Status)) {
> + //
> + // The FvFile was found. Keep the boot option.
> + //
> + continue;
> + }
> + }
> +
> + //
> + // Delete the boot option.
> + //
> + Status = EfiBootManagerDeleteLoadOptionVariable (
> + BootOptions[Index].OptionNumber, LoadOptionTypeBoot);
> + DEBUG_CODE (
> + CHAR16 *DevicePathString;
> +
> + DevicePathString = ConvertDevicePathToText (BootOptions[Index].FilePath,
> + FALSE, FALSE);
> + DEBUG ((
> + EFI_ERROR (Status) ? EFI_D_WARN : DEBUG_VERBOSE,
> + "%a: removing stale Boot#%04x %s: %r\n",
> + __FUNCTION__,
> + (UINT32)BootOptions[Index].OptionNumber,
> + DevicePathString == NULL ? L"<unavailable>" : DevicePathString,
> + Status
> + ));
> + if (DevicePathString != NULL) {
> + FreePool (DevicePathString);
> + }
> + );
> + }
> +
> + EfiBootManagerFreeLoadOptions (BootOptions, BootOptionCount);
> +}
> +
> +/**
> + Register the boot option And Keys.
> +
> + @param VOID
> +
> + @retval VOID
> +**/
> +VOID
> +PlatformRegisterOptionsAndKeys (
> + VOID
> + )
> +{
> + EFI_STATUS Status;
> + EFI_INPUT_KEY Enter;
> + EFI_INPUT_KEY F2;
> + EFI_INPUT_KEY Esc;
> + EFI_BOOT_MANAGER_LOAD_OPTION BootOption;
> +
> + //
> + // Register ENTER as CONTINUE key
> + //
> + Enter.ScanCode = SCAN_NULL;
> + Enter.UnicodeChar = CHAR_CARRIAGE_RETURN;
> + Status = EfiBootManagerRegisterContinueKeyOption (0, &Enter, NULL);
> + ASSERT_EFI_ERROR (Status);
> +
> + //
> + // Map F2 and ESC to Boot Manager Menu
> + //
> + F2.ScanCode = SCAN_F2;
> + F2.UnicodeChar = CHAR_NULL;
> + Esc.ScanCode = SCAN_ESC;
> + Esc.UnicodeChar = CHAR_NULL;
> + Status = EfiBootManagerGetBootManagerMenu (&BootOption);
> + ASSERT_EFI_ERROR (Status);
> + Status = EfiBootManagerAddKeyOptionVariable (
> + NULL, (UINT16) BootOption.OptionNumber, 0, &F2, NULL
> + );
> + ASSERT (Status == EFI_SUCCESS || Status == EFI_ALREADY_STARTED);
> + Status = EfiBootManagerAddKeyOptionVariable (
> + NULL, (UINT16) BootOption.OptionNumber, 0, &Esc, NULL
> + );
> + ASSERT (Status == EFI_SUCCESS || Status == EFI_ALREADY_STARTED);
> +}
> +
> +//
> +// BDS Platform Functions
> +//
> +/**
> + Do the platform init, can be customized by OEM/IBV
> + Possible things that can be done in PlatformBootManagerBeforeConsole:
> + > Update console variable: 1. include hot-plug devices;
> + > 2. Clear ConIn and add SOL for AMT
> + > Register new Driver#### or Boot####
> + > Register new Key####: e.g.: F12
> + > Signal ReadyToLock event
> + > Authentication action: 1. connect Auth devices;
> + > 2. Identify auto logon user.
> +**/
> +VOID
> +EFIAPI
> +PlatformBootManagerBeforeConsole (
> + VOID
> + )
> +{
> + RETURN_STATUS PcdStatus;
> +
> + //
> + // Signal EndOfDxe PI Event
> + //
> + EfiEventGroupSignal (&gEfiEndOfDxeEventGroupGuid);
> +
> + //
> + // Dispatch deferred images after EndOfDxe event.
> + //
> + EfiBootManagerDispatchDeferredImages ();
> +
> + //
> + // Locate the PCI root bridges and make the PCI bus driver connect each,
> + // non-recursively. This will produce a number of child handles with PciIo on
> + // them.
> + //
> + FilterAndProcess (&gEfiPciRootBridgeIoProtocolGuid, NULL, Connect);
> +
> + //
> + // Signal the ACPI platform driver that it can download QEMU ACPI tables.
> + //
> + EfiEventGroupSignal (&gRootBridgesConnectedEventGroupGuid);
> +
> + //
> + // Find all display class PCI devices (using the handles from the previous
> + // step), and connect them non-recursively. This should produce a number of
> + // child handles with GOPs on them.
> + //
> + FilterAndProcess (&gEfiPciIoProtocolGuid, IsPciDisplay, Connect);
> +
> + //
> + // Now add the device path of all handles with GOP on them to ConOut and
> + // ErrOut.
> + //
> + FilterAndProcess (&gEfiGraphicsOutputProtocolGuid, NULL, AddOutput);
> +
> + //
> + // Add the hardcoded short-form USB keyboard device path to ConIn.
> + //
> + EfiBootManagerUpdateConsoleVariable (ConIn,
> + (EFI_DEVICE_PATH_PROTOCOL *)&mUsbKeyboard, NULL);
> +
> + //
> + // Add the hardcoded serial console device path to ConIn, ConOut, ErrOut.
> + //
> + CopyGuid (&mSerialConsole.TermType.Guid, &gEfiTtyTermGuid);
> + EfiBootManagerUpdateConsoleVariable (ConIn,
> + (EFI_DEVICE_PATH_PROTOCOL *)&mSerialConsole, NULL);
> + EfiBootManagerUpdateConsoleVariable (ConOut,
> + (EFI_DEVICE_PATH_PROTOCOL *)&mSerialConsole, NULL);
> + EfiBootManagerUpdateConsoleVariable (ErrOut,
> + (EFI_DEVICE_PATH_PROTOCOL *)&mSerialConsole, NULL);
> +
> + //
> + // Set the front page timeout from the QEMU configuration.
> + //
> + PcdStatus = PcdSet16S (PcdPlatformBootTimeOut,
> + GetFrontPageTimeoutFromQemu ());
> + ASSERT_RETURN_ERROR (PcdStatus);
> +
> + //
> + // Register platform-specific boot options and keyboard shortcuts.
> + //
> + PlatformRegisterOptionsAndKeys ();
> +}
> +
> +/**
> + Do the platform specific action after the console is ready
> + Possible things that can be done in PlatformBootManagerAfterConsole:
> + > Console post action:
> + > Dynamically switch output mode from 100x31 to 80x25 for certain senarino
> + > Signal console ready platform customized event
> + > Run diagnostics like memory testing
> + > Connect certain devices
> + > Dispatch aditional option roms
> + > Special boot: e.g.: USB boot, enter UI
> +**/
> +VOID
> +EFIAPI
> +PlatformBootManagerAfterConsole (
> + VOID
> + )
> +{
> + //
> + // Show the splash screen.
> + //
> + BootLogoEnableLogo ();
> +
> + //
> + // Connect the rest of the devices.
> + //
> + EfiBootManagerConnectAll ();
> +
> + //
> + // Process QEMU's -kernel command line option. Note that the kernel booted
> + // this way should receive ACPI tables, which is why we connect all devices
> + // first (see above) -- PCI enumeration blocks ACPI table installation, if
> + // there is a PCI host.
> + //
> + TryRunningQemuKernel ();
> +
> + //
> + // Enumerate all possible boot options, then filter and reorder them based on
> + // the QEMU configuration.
> + //
> + EfiBootManagerRefreshAllBootOption ();
> +
> + //
> + // Register UEFI Shell
> + //
> + PlatformRegisterFvBootOption (
> + &gUefiShellFileGuid, L"EFI Internal Shell", LOAD_OPTION_ACTIVE
> + );
> +
> + RemoveStaleFvFileOptions ();
> + SetBootOrderFromQemu ();
> +}
> +
> +/**
> + This function is called each second during the boot manager waits the
> + timeout.
> +
> + @param TimeoutRemain The remaining timeout.
> +**/
> +VOID
> +EFIAPI
> +PlatformBootManagerWaitCallback (
> + IN UINT16 TimeoutRemain
> + )
> +{
> + EFI_GRAPHICS_OUTPUT_BLT_PIXEL_UNION Black;
> + EFI_GRAPHICS_OUTPUT_BLT_PIXEL_UNION White;
> + UINT16 Timeout;
> +
> + Timeout = PcdGet16 (PcdPlatformBootTimeOut);
> +
> + Black.Raw = 0x00000000;
> + White.Raw = 0x00FFFFFF;
> +
> + BootLogoUpdateProgress (
> + White.Pixel,
> + Black.Pixel,
> + L"Start boot option",
> + White.Pixel,
> + (Timeout - TimeoutRemain) * 100 / Timeout,
> + 0
> + );
> +}
> +
> +/**
> + The function is called when no boot option could be launched,
> + including platform recovery options and options pointing to applications
> + built into firmware volumes.
> +
> + If this function returns, BDS attempts to enter an infinite loop.
> +**/
> +VOID
> +EFIAPI
> +PlatformBootManagerUnableToBoot (
> + VOID
> + )
> +{
> + EFI_STATUS Status;
> + EFI_INPUT_KEY Key;
> + EFI_BOOT_MANAGER_LOAD_OPTION BootManagerMenu;
> + UINTN Index;
> +
> + //
> + // BootManagerMenu doesn't contain the correct information when return status
> + // is EFI_NOT_FOUND.
> + //
> + Status = EfiBootManagerGetBootManagerMenu (&BootManagerMenu);
> + if (EFI_ERROR (Status)) {
> + return;
> + }
> + //
> + // Normally BdsDxe does not print anything to the system console, but this is
> + // a last resort -- the end-user will likely not see any DEBUG messages
> + // logged in this situation.
> + //
> + // AsciiPrint () will NULL-check gST->ConOut internally. We check gST->ConIn
> + // here to see if it makes sense to request and wait for a keypress.
> + //
> + if (gST->ConIn != NULL) {
> + AsciiPrint (
> + "%a: No bootable option or device was found.\n"
> + "%a: Press any key to enter the Boot Manager Menu.\n",
> + gEfiCallerBaseName,
> + gEfiCallerBaseName
> + );
> + Status = gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &Index);
> + ASSERT_EFI_ERROR (Status);
> + ASSERT (Index == 0);
> +
> + //
> + // Drain any queued keys.
> + //
> + while (!EFI_ERROR (gST->ConIn->ReadKeyStroke (gST->ConIn, &Key))) {
> + //
> + // just throw away Key
> + //
> + }
> + }
> +
> + for (;;) {
> + EfiBootManagerBoot (&BootManagerMenu);
> + }
> +}
> diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBm.h b/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBm.h
> new file mode 100644
> index 0000000000..f20c78252f
> --- /dev/null
> +++ b/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBm.h
> @@ -0,0 +1,112 @@
> +/** @file
> + Head file for BDS Platform specific code
> +
> + Copyright (c) 2022 Loongson Technology Corporation Limited. All rights reserved.<BR>
> +
> + SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#ifndef PLATFORM_BM_H_
> +#define PLATFORM_BM_H_
> +
> +#include <Library/DevicePathLib.h>
> +
> +#define DP_NODE_LEN(Type) { (UINT8)sizeof (Type), (UINT8)(sizeof (Type) >> 8) }
> +
> +#define SERIAL_DXE_FILE_GUID { \
> + 0xD3987D4B, 0x971A, 0x435F, \
> + { 0x8C, 0xAF, 0x49, 0x67, 0xEB, 0x62, 0x72, 0x41 } \
> + }
> +
> +#define ALIGN_UP(addr, align) \
> + ((addr + (typeof (addr)) align - 1) & ~((typeof (addr)) align - 1))
> +
> +#pragma pack (1)
> +typedef struct {
> + VENDOR_DEVICE_PATH SerialDxe;
> + UART_DEVICE_PATH Uart;
> + VENDOR_DEFINED_DEVICE_PATH TermType;
> + EFI_DEVICE_PATH_PROTOCOL End;
> +} PLATFORM_SERIAL_CONSOLE;
> +#pragma pack ()
> +
> +#pragma pack (1)
> +typedef struct {
> + USB_CLASS_DEVICE_PATH Keyboard;
> + EFI_DEVICE_PATH_PROTOCOL End;
> +} PLATFORM_USB_KEYBOARD;
> +#pragma pack ()
> +
> +/**
> + Check if the handle satisfies a particular condition.
> +
> + @param[in] Handle The handle to check.
> + @param[in] ReportText A caller-allocated string passed in for reporting
> + purposes. It must never be NULL.
> +
> + @retval TRUE The condition is satisfied.
> + @retval FALSE Otherwise. This includes the case when the condition could not
> + be fully evaluated due to an error.
> +**/
> +typedef
> +BOOLEAN
> +(EFIAPI *FILTER_FUNCTION) (
> + IN EFI_HANDLE Handle,
> + IN CONST CHAR16 *ReportText
> + );
> +
> +/**
> + Process a handle.
> +
> + @param[in] Handle The handle to process.
> + @param[in] ReportText A caller-allocated string passed in for reporting
> + purposes. It must never be NULL.
> +**/
> +typedef
> +VOID
> +(EFIAPI *CALLBACK_FUNCTION) (
> + IN EFI_HANDLE Handle,
> + IN CONST CHAR16 *ReportText
> + );
> +
> +/**
> + * execute from kernel entry point.
> + *
> + * @param[in] Argc The count of args.
> + * @param[in] Argv The pointer to args array.
> + * @param[in] Bpi The pointer to bootparaminterface struct.
> + * @param[in] Vec The fourth args for kernel.
> + ***/
> +typedef
> +VOID
> +(EFIAPI *EFI_KERNEL_ENTRY_POINT) (
> + IN UINTN Argc,
> + IN VOID *Argv,
> + IN VOID *Bpi,
> + IN VOID *Vec
> + );
> +
> +/**
> + Download the kernel, the initial ramdisk, and the kernel command line from
> + QEMU's fw_cfg. Construct a minimal SimpleFileSystem that contains the two
> + image files, and load and start the kernel from it.
> +
> + The kernel will be instructed via its command line to load the initrd from
> + the same Simple FileSystem.
> +
> + @retval EFI_NOT_FOUND Kernel image was not found.
> + @retval EFI_OUT_OF_RESOURCES Memory allocation failed.
> + @retval EFI_PROTOCOL_ERROR Unterminated kernel command line.
> +
> + @return Error codes from any of the underlying
> + functions. On success, the function doesn't
> + return.
> +**/
> +EFI_STATUS
> +EFIAPI
> +TryRunningQemuKernel (
> + VOID
> + );
> +
> +#endif // PLATFORM_BM_H_
> diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf b/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf
> new file mode 100644
> index 0000000000..0ea6fea5c5
> --- /dev/null
> +++ b/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf
> @@ -0,0 +1,75 @@
> +## @file
> +# Implementation for PlatformBootManagerLib library class interfaces.
> +#
> +# Copyright (c) 2022 Loongson Technology Corporation Limited. All rights reserved.<BR>
> +#
> +# SPDX-License-Identifier: BSD-2-Clause-Patent
> +#
> +##
> +
> +[Defines]
> + INF_VERSION = 0x00010005
> + BASE_NAME = PlatformBootManagerLib
> + FILE_GUID = 469184E8-FADA-41E4-8823-012CA19B40D4
> + MODULE_TYPE = DXE_DRIVER
> + VERSION_STRING = 1.0
> + LIBRARY_CLASS = PlatformBootManagerLib|DXE_DRIVER
> +
> +#
> +# VALID_ARCHITECTURES = LOONGARCH64
> +#
> +
> +[Sources]
> + PlatformBm.c
> + QemuKernel.c
> +
> +[Packages]
> + Platform/Loongson/LoongArchQemuPkg/Loongson.dec
> + MdeModulePkg/MdeModulePkg.dec
> + MdePkg/MdePkg.dec
> + OvmfPkg/OvmfPkg.dec
> + ShellPkg/ShellPkg.dec
> +
> +[LibraryClasses]
> + BaseLib
> + BaseMemoryLib
> + BootLogoLib
> + DebugLib
> + DevicePathLib
> + MemoryAllocationLib
> + PcdLib
> + PrintLib
> + QemuBootOrderLib
> + QemuLoadImageLib
> + QemuFwCfgLib
> + UefiBootManagerLib
> + UefiBootServicesTableLib
> + UefiLib
> + UefiRuntimeServicesTableLib
> +
> +[FixedPcd]
> + gEfiMdePkgTokenSpaceGuid.PcdUartDefaultBaudRate
> + gEfiMdePkgTokenSpaceGuid.PcdUartDefaultDataBits
> + gEfiMdePkgTokenSpaceGuid.PcdUartDefaultParity
> + gEfiMdePkgTokenSpaceGuid.PcdUartDefaultStopBits
> +
> +[Pcd]
> + gEfiMdePkgTokenSpaceGuid.PcdPlatformBootTimeOut
> +
> +[Guids]
> + gEfiFileInfoGuid
> + gEfiFileSystemInfoGuid
> + gEfiFileSystemVolumeLabelInfoIdGuid
> + gEfiEndOfDxeEventGroupGuid
> + gRootBridgesConnectedEventGroupGuid
> + gUefiShellFileGuid
> + gEfiLoongsonBootparamsTableGuid ## SOMETIMES_PRODUCES ## SystemTable
> + gEfiTtyTermGuid
> +
> +[Protocols]
> + gEfiDevicePathProtocolGuid
> + gEfiFirmwareVolume2ProtocolGuid
> + gEfiGraphicsOutputProtocolGuid
> + gEfiLoadedImageProtocolGuid
> + gEfiPciRootBridgeIoProtocolGuid
> + gEfiSimpleFileSystemProtocolGuid
> diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/QemuKernel.c b/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/QemuKernel.c
> new file mode 100644
> index 0000000000..386003a8d7
> --- /dev/null
> +++ b/Platform/Loongson/LoongArchQemuPkg/Library/PlatformBootManagerLib/QemuKernel.c
> @@ -0,0 +1,81 @@
> +/** @file
> + Try to run Linux kernel.
> +
> + Copyright (c) 2022 Loongson Technology Corporation Limited. All rights reserved.<BR>
> +
> + SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> + @par Glossary:
> + - mem - Memory
> + - Bpi - Boot Parameter Interface
> + - FwCfg - FirmWare Configure
> +**/
> +
> +#include <Library/QemuLoadImageLib.h>
> +#include <Library/ReportStatusCodeLib.h>
> +
> +#include <Library/BaseLib.h>
> +#include <Library/BaseMemoryLib.h>
> +#include <Library/DebugLib.h>
> +#include <Library/DevicePathLib.h>
> +#include <Library/MemoryAllocationLib.h>
> +#include <Library/UefiBootServicesTableLib.h>
> +#include <Library/UefiLib.h>
> +#include <Library/UefiRuntimeServicesTableLib.h>
> +
> +/**
> + Download the kernel, the initial ramdisk, and the kernel command line from
> + QEMU's fw_cfg. Construct a minimal SimpleFileSystem that contains the two
> + image files, and load and start the kernel from it.
> +
> + The kernel will be instructed via its command line to load the initrd from
> + the same Simple FileSystem.
> +
> + @retval EFI_NOT_FOUND Kernel image was not found.
> + @retval EFI_OUT_OF_RESOURCES Memory allocation failed.
> + @retval EFI_PROTOCOL_ERROR Unterminated kernel command line.
> +
> + @return Error codes from any of the underlying
> + functions. On success, the function doesn't
> + return.
> +**/
> +EFI_STATUS
> +TryRunningQemuKernel (
> + VOID
> + )
> +{
> + EFI_STATUS Status;
> + EFI_HANDLE KernelImageHandle;
> +
> + Status = QemuLoadKernelImage (&KernelImageHandle);
> + if (EFI_ERROR (Status)) {
> + return Status;
> + }
> +
> + //
> + // Signal the EFI_EVENT_GROUP_READY_TO_BOOT event.
> + //
> + EfiSignalEventReadyToBoot ();
> +
> + REPORT_STATUS_CODE (
> + EFI_PROGRESS_CODE,
> + (EFI_SOFTWARE_DXE_BS_DRIVER | EFI_SW_DXE_BS_PC_READY_TO_BOOT_EVENT)
> + );
> +
> + //
> + // Start the image.
> + //
> + Status = QemuStartKernelImage (&KernelImageHandle);
> + if (EFI_ERROR (Status)) {
> + DEBUG ((
> + DEBUG_ERROR,
> + "%a: QemuStartKernelImage(): %r\n",
> + __FUNCTION__,
> + Status
> + ));
> + }
> +
> + QemuUnloadKernelImage (KernelImageHandle);
> +
> + return Status;
> +}
> --
> 2.31.1
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