From: Narinder Dhillon <ndhillon@marvell.com>
Marvell Odyssey SoC does not have RTC on chip. This patch provides a
dummy RTC driver to generate architectural protocol and help boot
Odyssey SoC.
Signed-off-by: Narinder Dhillon <ndhillon@marvell.com>
---
.../Marvell/Drivers/Null/RtcNull/RtcNullDxe.c | 280 ++++++++++++++++++
.../Marvell/Drivers/Null/RtcNull/RtcNullDxe.h | 37 +++
.../Drivers/Null/RtcNull/RtcNullDxe.inf | 46 +++
3 files changed, 363 insertions(+)
create mode 100644 Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.c
create mode 100644 Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.h
create mode 100644 Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.inf
diff --git a/Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.c b/Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.c
new file mode 100644
index 0000000000..8a7956f35d
--- /dev/null
+++ b/Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.c
@@ -0,0 +1,280 @@
+/** @file
+*
+* SPDX-License-Identifier: BSD-2-Clause-Patent
+* https://spdx.org/licenses
+*
+* Copyright (C) 2022 Marvell
+*
+* Source file for NULL RTC Driver
+*
+**/
+
+#include <Uefi.h> // Base defines
+#include <Library/DebugLib.h> // DEBUG
+#include <Library/MemoryAllocationLib.h> // AllocateRuntimeZeroPool
+#include <Library/BaseMemoryLib.h> // ZeroMem
+#include <Library/UefiBootServicesTableLib.h> // gBS
+#include <Library/UefiRuntimeLib.h> // EfiConvertPointer
+#include <Library/UefiRuntimeServicesTableLib.h> // gRT
+
+#include "RtcNullDxe.h"
+
+// all variables used across the driver
+RTC_NULL_PRIVATE_DATA *mRtcPrivateData;
+STATIC EFI_EVENT mRtcVirtualAddressChangeEvent;
+
+STATIC CONST INTN DayOfMonth[12] =
+ { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
+
+STATIC
+BOOLEAN
+IsLeapYear(IN EFI_TIME *Time)
+{
+ if (Time->Year % 4 == 0) {
+ if (Time->Year % 100 == 0) {
+ if (Time->Year % 400 == 0) {
+ return TRUE;
+ } else {
+ return FALSE;
+ }
+ } else {
+ return TRUE;
+ }
+ } else {
+ return FALSE;
+ }
+}
+
+BOOLEAN DayValid(IN EFI_TIME *Time)
+{
+ if (Time->Day < 1 ||
+ Time->Day > DayOfMonth[Time->Month - 1] ||
+ (Time->Month == 2 && (!IsLeapYear (Time) && Time->Day > 28))) {
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+EFI_STATUS
+GetDateTime(
+ IN RTC_NULL_PRIVATE_DATA *PrivateData,
+ OUT EFI_TIME *Time)
+{
+
+ if (PrivateData == NULL || Time == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ ZeroMem(Time, sizeof(EFI_TIME));
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+SetDateTime(IN RTC_NULL_PRIVATE_DATA *PrivateData,
+ IN EFI_TIME *Time)
+{
+ if (PrivateData == NULL || Time == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if ( (Time->Month < 1) || (Time->Month > 12) ||
+ (Time->Second > 59) || (Time->Minute > 59) ||
+ (Time->Hour > 23) || (!DayValid(Time)) ||
+ (Time->Year < 1998) || (Time->Year > 2099) ||
+ (Time->Nanosecond > 999999999) ||
+ (Time->TimeZone < -1440) || ((Time->TimeZone > 1440) &&
+ (Time->TimeZone != 2047))) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Returns the current time and date information, and the time-keeping capabilities
+ of the hardware platform.
+
+ @param Time A pointer to storage to receive a snapshot of the current time.
+ @param Capabilities An optional pointer to a buffer to receive the real time clock
+ device's capabilities.
+
+ @retval EFI_SUCCESS The operation completed successfully.
+ @retval EFI_INVALID_PARAMETER Time is NULL.
+ @retval EFI_DEVICE_ERROR The time could not be retrieved due to hardware error.
+
+**/
+EFI_STATUS
+ EFIAPI
+GetTime(OUT EFI_TIME * Time, OUT EFI_TIME_CAPABILITIES * Capabilities)
+{
+ if (Time == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (mRtcPrivateData->Initialized == FALSE) {
+ return EFI_UNSUPPORTED;
+ }
+
+ return GetDateTime (mRtcPrivateData, Time);
+}
+
+
+
+/**
+ Sets the current local time and date information.
+
+ @param Time A pointer to the current time.
+
+ @retval EFI_SUCCESS The operation completed successfully.
+ @retval EFI_INVALID_PARAMETER A time field is out of range.
+ @retval EFI_DEVICE_ERROR The time could not be set due due to hardware error.
+
+**/
+EFI_STATUS EFIAPI SetTime(IN EFI_TIME * Time)
+{
+ if (Time == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (mRtcPrivateData->Initialized == FALSE) {
+ return EFI_UNSUPPORTED;
+ }
+
+ return SetDateTime (mRtcPrivateData, Time);
+}
+
+
+/**
+ Returns the current wakeup alarm clock setting.
+
+ @param Enabled Indicates if the alarm is currently enabled or disabled.
+ @param Pending Indicates if the alarm signal is pending and requires acknowledgement.
+ @param Time The current alarm setting.
+
+ @retval EFI_SUCCESS The alarm settings were returned.
+ @retval EFI_INVALID_PARAMETER Any parameter is NULL.
+ @retval EFI_DEVICE_ERROR The wakeup time could not be retrieved due to a hardware error.
+
+**/
+EFI_STATUS
+ EFIAPI
+GetWakeupTime(OUT BOOLEAN * Enabled,
+ OUT BOOLEAN * Pending, OUT EFI_TIME * Time)
+{
+ return EFI_UNSUPPORTED;
+}
+
+
+/**
+ Sets the system wakeup alarm clock time.
+
+ @param Enabled Enable or disable the wakeup alarm.
+ @param Time If Enable is TRUE, the time to set the wakeup alarm for.
+
+ @retval EFI_SUCCESS If Enable is TRUE, then the wakeup alarm was enabled. If
+ Enable is FALSE, then the wakeup alarm was disabled.
+ @retval EFI_INVALID_PARAMETER A time field is out of range.
+ @retval EFI_DEVICE_ERROR The wakeup time could not be set due to a hardware error.
+ @retval EFI_UNSUPPORTED A wakeup timer is not supported on this platform.
+
+**/
+EFI_STATUS EFIAPI SetWakeupTime(IN BOOLEAN Enabled, OUT EFI_TIME * Time)
+{
+ return EFI_UNSUPPORTED;
+}
+
+
+// Convert the mSmbus as well since the SmbusLib leaves this to the runtine DXEs
+
+EFIAPI VOID
+RtcVirtualNotifyEvent(IN EFI_EVENT Event, IN VOID * Context)
+{
+ EfiConvertPointer (0x0, (VOID **) &mRtcPrivateData);
+}
+
+/**
+ The Entry Point of module. It follows the standard UEFI driver model.
+
+ @param[in] ImageHandle The firmware allocated handle for the EFI image.
+ @param[in] SystemTable A pointer to the EFI System Table.
+
+ @retval EFI_SUCCESS The entry point is executed successfully.
+ @retval other Some error occurs when executing this entry point.
+
+**/
+EFI_STATUS
+ EFIAPI
+RtcNullDxeInitialize (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE * SystemTable)
+{
+ EFI_TIME Time;
+ RTC_NULL_PRIVATE_DATA *Private = NULL;
+ EFI_STATUS Status = EFI_SUCCESS;
+
+ DEBUG ((DEBUG_INFO, "RtcNullDxeInitialize\n"));
+
+ /* Allocate the private data */
+ Private = AllocateRuntimeZeroPool (sizeof (RTC_NULL_PRIVATE_DATA));
+
+ if (Private == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ DEBUG ((DEBUG_ERROR, "RtcDxeInitialize: %r\n", Status));
+ goto Exit;
+ }
+
+ mRtcPrivateData = Private;
+
+ Private->Initialized = FALSE;
+ Private->Bus = 0xFF;
+ Private->SlaveAddr = 0xFF;
+
+ /* Check clock and init it to UNIX start time */
+ Status = GetDateTime (mRtcPrivateData, &Time);
+
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "RtcNullDxeInitialize: %r\n", Status));
+ goto Exit;
+ }
+
+ if (Time.Year == 1900) {
+ Time.Day = 1;
+ Time.Month = 1;
+ Time.Year = 1998;
+ Time.Second = 0;
+ Time.Minute = 0;
+ Time.Hour = 0;
+ Time.Daylight = 0;
+ Time.TimeZone = 0;
+
+ Status = SetDateTime (mRtcPrivateData, &Time);
+
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "RtcDxeInitialize: %r\n", Status));
+ goto Exit;
+ }
+ }
+
+Exit:
+ gRT->GetTime = GetTime;
+ gRT->SetTime = SetTime;
+ gRT->GetWakeupTime = GetWakeupTime;
+ gRT->SetWakeupTime = SetWakeupTime;
+
+ Status = gBS->InstallMultipleProtocolInterfaces (&Private->RtcHandle,
+ &gEfiRealTimeClockArchProtocolGuid,
+ NULL,
+ NULL);
+
+ Status = gBS->CreateEventEx (EVT_NOTIFY_SIGNAL,
+ TPL_NOTIFY,
+ RtcVirtualNotifyEvent,
+ NULL,
+ &gEfiEventVirtualAddressChangeGuid,
+ &mRtcVirtualAddressChangeEvent);
+ ASSERT_EFI_ERROR(Status);
+
+ return Status;
+}
diff --git a/Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.h b/Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.h
new file mode 100644
index 0000000000..dca99ef8f9
--- /dev/null
+++ b/Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.h
@@ -0,0 +1,37 @@
+/** @file
+*
+* SPDX-License-Identifier: BSD-2-Clause-Patent
+* https://spdx.org/licenses
+*
+* Copyright (C) 2022 Marvell
+*
+* Header file for NULL RTC Driver
+*
+**/
+
+#ifndef _RTC_NULL_DXE_H_
+#define _RTC_NULL_DXE_H_
+
+#include <Uefi.h>
+
+#include <Library/BaseLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/DebugLib.h>
+#include <Library/UefiBootServicesTableLib.h> // gBS
+#include <Library/BaseMemoryLib.h> // ZeroMem
+
+//
+// Private data for driver.
+//
+#define RTC_NULL_DXE_PRIVATE_DATA_SIGNATURE SIGNATURE_32( 'R', 'T', 'C', '_' )
+
+typedef struct {
+ UINT32 Signature;
+ UINT8 Bus;
+ UINT8 SlaveAddr;
+ EFI_HANDLE RtcHandle;
+ BOOLEAN Initialized;
+} RTC_NULL_PRIVATE_DATA;
+
+
+#endif //_RTC_NULL_DXE_H_
diff --git a/Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.inf b/Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.inf
new file mode 100644
index 0000000000..d262e971fc
--- /dev/null
+++ b/Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.inf
@@ -0,0 +1,46 @@
+#/** @file
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+# https://spdx.org/licenses
+#
+# Copyright (C) 2022 Marvell
+# Module description file of RTC NULL driver.
+#
+#**/
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = RtcNullDxe
+ FILE_GUID = 9c0a0971-b0f6-442e-ac01-0a3eb52c457d
+ MODULE_TYPE = DXE_RUNTIME_DRIVER
+ VERSION_STRING = 1.0
+
+ ENTRY_POINT = RtcNullDxeInitialize
+
+
+[Sources]
+ RtcNullDxe.c
+ RtcNullDxe.h
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+
+[LibraryClasses]
+ DebugLib
+ MemoryAllocationLib
+ UefiDriverEntryPoint
+ BaseMemoryLib
+ UefiBootServicesTableLib
+ UefiRuntimeLib
+ UefiRuntimeServicesTableLib
+
+[Guids]
+ gEfiEventVirtualAddressChangeGuid
+
+[Protocols]
+ gEfiRealTimeClockArchProtocolGuid ## PRODUCES
+
+[Depex]
+ TRUE
+
--
2.34.1
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-=-=-=-=-=-=-=-=-=-=-=-+marcin.s.wojtas@gmail.com
Hi Narinder,
czw., 21 gru 2023 o 01:54 Narinder Dhillon <ndhillon@marvell.com> napisał(a):
>
> From: Narinder Dhillon <ndhillon@marvell.com>
>
> Marvell Odyssey SoC does not have RTC on chip. This patch provides a
> dummy RTC driver to generate architectural protocol and help boot
> Odyssey SoC.
>
> Signed-off-by: Narinder Dhillon <ndhillon@marvell.com>
> ---
> .../Marvell/Drivers/Null/RtcNull/RtcNullDxe.c | 280 ++++++++++++++++++
> .../Marvell/Drivers/Null/RtcNull/RtcNullDxe.h | 37 +++
> .../Drivers/Null/RtcNull/RtcNullDxe.inf | 46 +++
Instead of the custom Null driver you should use the generic solution
- it should be enough to add
EmbeddedPkg/RealTimeClockRuntimeDxe/RealTimeClockRuntimeDxe.inf {
<LibraryClasses>
RealTimeClockLib|EmbeddedPkg/Library/VirtualRealTimeClockLib/VirtualRealTimeClockLib.inf
in the .dsc file, and
INF EmbeddedPkg/RealTimeClockRuntimeDxe/RealTimeClockRuntimeDxe.inf
in the .fdf file, to achieve the same result.
Best regards,
Marcin
Best regards,
Marcin
> 3 files changed, 363 insertions(+)
> create mode 100644 Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.c
> create mode 100644 Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.h
> create mode 100644 Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.inf
>
> diff --git a/Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.c b/Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.c
> new file mode 100644
> index 0000000000..8a7956f35d
> --- /dev/null
> +++ b/Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.c
> @@ -0,0 +1,280 @@
> +/** @file
> +*
> +* SPDX-License-Identifier: BSD-2-Clause-Patent
> +* https://spdx.org/licenses
> +*
> +* Copyright (C) 2022 Marvell
> +*
> +* Source file for NULL RTC Driver
> +*
> +**/
> +
> +#include <Uefi.h> // Base defines
> +#include <Library/DebugLib.h> // DEBUG
> +#include <Library/MemoryAllocationLib.h> // AllocateRuntimeZeroPool
> +#include <Library/BaseMemoryLib.h> // ZeroMem
> +#include <Library/UefiBootServicesTableLib.h> // gBS
> +#include <Library/UefiRuntimeLib.h> // EfiConvertPointer
> +#include <Library/UefiRuntimeServicesTableLib.h> // gRT
> +
> +#include "RtcNullDxe.h"
> +
> +// all variables used across the driver
> +RTC_NULL_PRIVATE_DATA *mRtcPrivateData;
> +STATIC EFI_EVENT mRtcVirtualAddressChangeEvent;
> +
> +STATIC CONST INTN DayOfMonth[12] =
> + { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
> +
> +STATIC
> +BOOLEAN
> +IsLeapYear(IN EFI_TIME *Time)
> +{
> + if (Time->Year % 4 == 0) {
> + if (Time->Year % 100 == 0) {
> + if (Time->Year % 400 == 0) {
> + return TRUE;
> + } else {
> + return FALSE;
> + }
> + } else {
> + return TRUE;
> + }
> + } else {
> + return FALSE;
> + }
> +}
> +
> +BOOLEAN DayValid(IN EFI_TIME *Time)
> +{
> + if (Time->Day < 1 ||
> + Time->Day > DayOfMonth[Time->Month - 1] ||
> + (Time->Month == 2 && (!IsLeapYear (Time) && Time->Day > 28))) {
> + return FALSE;
> + }
> +
> + return TRUE;
> +}
> +
> +EFI_STATUS
> +GetDateTime(
> + IN RTC_NULL_PRIVATE_DATA *PrivateData,
> + OUT EFI_TIME *Time)
> +{
> +
> + if (PrivateData == NULL || Time == NULL) {
> + return EFI_INVALID_PARAMETER;
> + }
> +
> + ZeroMem(Time, sizeof(EFI_TIME));
> +
> + return EFI_SUCCESS;
> +}
> +
> +EFI_STATUS
> +SetDateTime(IN RTC_NULL_PRIVATE_DATA *PrivateData,
> + IN EFI_TIME *Time)
> +{
> + if (PrivateData == NULL || Time == NULL) {
> + return EFI_INVALID_PARAMETER;
> + }
> +
> + if ( (Time->Month < 1) || (Time->Month > 12) ||
> + (Time->Second > 59) || (Time->Minute > 59) ||
> + (Time->Hour > 23) || (!DayValid(Time)) ||
> + (Time->Year < 1998) || (Time->Year > 2099) ||
> + (Time->Nanosecond > 999999999) ||
> + (Time->TimeZone < -1440) || ((Time->TimeZone > 1440) &&
> + (Time->TimeZone != 2047))) {
> + return EFI_INVALID_PARAMETER;
> + }
> +
> + return EFI_SUCCESS;
> +}
> +
> +/**
> + Returns the current time and date information, and the time-keeping capabilities
> + of the hardware platform.
> +
> + @param Time A pointer to storage to receive a snapshot of the current time.
> + @param Capabilities An optional pointer to a buffer to receive the real time clock
> + device's capabilities.
> +
> + @retval EFI_SUCCESS The operation completed successfully.
> + @retval EFI_INVALID_PARAMETER Time is NULL.
> + @retval EFI_DEVICE_ERROR The time could not be retrieved due to hardware error.
> +
> +**/
> +EFI_STATUS
> + EFIAPI
> +GetTime(OUT EFI_TIME * Time, OUT EFI_TIME_CAPABILITIES * Capabilities)
> +{
> + if (Time == NULL) {
> + return EFI_INVALID_PARAMETER;
> + }
> +
> + if (mRtcPrivateData->Initialized == FALSE) {
> + return EFI_UNSUPPORTED;
> + }
> +
> + return GetDateTime (mRtcPrivateData, Time);
> +}
> +
> +
> +
> +/**
> + Sets the current local time and date information.
> +
> + @param Time A pointer to the current time.
> +
> + @retval EFI_SUCCESS The operation completed successfully.
> + @retval EFI_INVALID_PARAMETER A time field is out of range.
> + @retval EFI_DEVICE_ERROR The time could not be set due due to hardware error.
> +
> +**/
> +EFI_STATUS EFIAPI SetTime(IN EFI_TIME * Time)
> +{
> + if (Time == NULL) {
> + return EFI_INVALID_PARAMETER;
> + }
> +
> + if (mRtcPrivateData->Initialized == FALSE) {
> + return EFI_UNSUPPORTED;
> + }
> +
> + return SetDateTime (mRtcPrivateData, Time);
> +}
> +
> +
> +/**
> + Returns the current wakeup alarm clock setting.
> +
> + @param Enabled Indicates if the alarm is currently enabled or disabled.
> + @param Pending Indicates if the alarm signal is pending and requires acknowledgement.
> + @param Time The current alarm setting.
> +
> + @retval EFI_SUCCESS The alarm settings were returned.
> + @retval EFI_INVALID_PARAMETER Any parameter is NULL.
> + @retval EFI_DEVICE_ERROR The wakeup time could not be retrieved due to a hardware error.
> +
> +**/
> +EFI_STATUS
> + EFIAPI
> +GetWakeupTime(OUT BOOLEAN * Enabled,
> + OUT BOOLEAN * Pending, OUT EFI_TIME * Time)
> +{
> + return EFI_UNSUPPORTED;
> +}
> +
> +
> +/**
> + Sets the system wakeup alarm clock time.
> +
> + @param Enabled Enable or disable the wakeup alarm.
> + @param Time If Enable is TRUE, the time to set the wakeup alarm for.
> +
> + @retval EFI_SUCCESS If Enable is TRUE, then the wakeup alarm was enabled. If
> + Enable is FALSE, then the wakeup alarm was disabled.
> + @retval EFI_INVALID_PARAMETER A time field is out of range.
> + @retval EFI_DEVICE_ERROR The wakeup time could not be set due to a hardware error.
> + @retval EFI_UNSUPPORTED A wakeup timer is not supported on this platform.
> +
> +**/
> +EFI_STATUS EFIAPI SetWakeupTime(IN BOOLEAN Enabled, OUT EFI_TIME * Time)
> +{
> + return EFI_UNSUPPORTED;
> +}
> +
> +
> +// Convert the mSmbus as well since the SmbusLib leaves this to the runtine DXEs
> +
> +EFIAPI VOID
> +RtcVirtualNotifyEvent(IN EFI_EVENT Event, IN VOID * Context)
> +{
> + EfiConvertPointer (0x0, (VOID **) &mRtcPrivateData);
> +}
> +
> +/**
> + The Entry Point of module. It follows the standard UEFI driver model.
> +
> + @param[in] ImageHandle The firmware allocated handle for the EFI image.
> + @param[in] SystemTable A pointer to the EFI System Table.
> +
> + @retval EFI_SUCCESS The entry point is executed successfully.
> + @retval other Some error occurs when executing this entry point.
> +
> +**/
> +EFI_STATUS
> + EFIAPI
> +RtcNullDxeInitialize (
> + IN EFI_HANDLE ImageHandle,
> + IN EFI_SYSTEM_TABLE * SystemTable)
> +{
> + EFI_TIME Time;
> + RTC_NULL_PRIVATE_DATA *Private = NULL;
> + EFI_STATUS Status = EFI_SUCCESS;
> +
> + DEBUG ((DEBUG_INFO, "RtcNullDxeInitialize\n"));
> +
> + /* Allocate the private data */
> + Private = AllocateRuntimeZeroPool (sizeof (RTC_NULL_PRIVATE_DATA));
> +
> + if (Private == NULL) {
> + Status = EFI_OUT_OF_RESOURCES;
> + DEBUG ((DEBUG_ERROR, "RtcDxeInitialize: %r\n", Status));
> + goto Exit;
> + }
> +
> + mRtcPrivateData = Private;
> +
> + Private->Initialized = FALSE;
> + Private->Bus = 0xFF;
> + Private->SlaveAddr = 0xFF;
> +
> + /* Check clock and init it to UNIX start time */
> + Status = GetDateTime (mRtcPrivateData, &Time);
> +
> + if (EFI_ERROR (Status)) {
> + DEBUG ((DEBUG_ERROR, "RtcNullDxeInitialize: %r\n", Status));
> + goto Exit;
> + }
> +
> + if (Time.Year == 1900) {
> + Time.Day = 1;
> + Time.Month = 1;
> + Time.Year = 1998;
> + Time.Second = 0;
> + Time.Minute = 0;
> + Time.Hour = 0;
> + Time.Daylight = 0;
> + Time.TimeZone = 0;
> +
> + Status = SetDateTime (mRtcPrivateData, &Time);
> +
> + if (EFI_ERROR (Status)) {
> + DEBUG ((DEBUG_ERROR, "RtcDxeInitialize: %r\n", Status));
> + goto Exit;
> + }
> + }
> +
> +Exit:
> + gRT->GetTime = GetTime;
> + gRT->SetTime = SetTime;
> + gRT->GetWakeupTime = GetWakeupTime;
> + gRT->SetWakeupTime = SetWakeupTime;
> +
> + Status = gBS->InstallMultipleProtocolInterfaces (&Private->RtcHandle,
> + &gEfiRealTimeClockArchProtocolGuid,
> + NULL,
> + NULL);
> +
> + Status = gBS->CreateEventEx (EVT_NOTIFY_SIGNAL,
> + TPL_NOTIFY,
> + RtcVirtualNotifyEvent,
> + NULL,
> + &gEfiEventVirtualAddressChangeGuid,
> + &mRtcVirtualAddressChangeEvent);
> + ASSERT_EFI_ERROR(Status);
> +
> + return Status;
> +}
> diff --git a/Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.h b/Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.h
> new file mode 100644
> index 0000000000..dca99ef8f9
> --- /dev/null
> +++ b/Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.h
> @@ -0,0 +1,37 @@
> +/** @file
> +*
> +* SPDX-License-Identifier: BSD-2-Clause-Patent
> +* https://spdx.org/licenses
> +*
> +* Copyright (C) 2022 Marvell
> +*
> +* Header file for NULL RTC Driver
> +*
> +**/
> +
> +#ifndef _RTC_NULL_DXE_H_
> +#define _RTC_NULL_DXE_H_
> +
> +#include <Uefi.h>
> +
> +#include <Library/BaseLib.h>
> +#include <Library/MemoryAllocationLib.h>
> +#include <Library/DebugLib.h>
> +#include <Library/UefiBootServicesTableLib.h> // gBS
> +#include <Library/BaseMemoryLib.h> // ZeroMem
> +
> +//
> +// Private data for driver.
> +//
> +#define RTC_NULL_DXE_PRIVATE_DATA_SIGNATURE SIGNATURE_32( 'R', 'T', 'C', '_' )
> +
> +typedef struct {
> + UINT32 Signature;
> + UINT8 Bus;
> + UINT8 SlaveAddr;
> + EFI_HANDLE RtcHandle;
> + BOOLEAN Initialized;
> +} RTC_NULL_PRIVATE_DATA;
> +
> +
> +#endif //_RTC_NULL_DXE_H_
> diff --git a/Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.inf b/Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.inf
> new file mode 100644
> index 0000000000..d262e971fc
> --- /dev/null
> +++ b/Silicon/Marvell/Drivers/Null/RtcNull/RtcNullDxe.inf
> @@ -0,0 +1,46 @@
> +#/** @file
> +#
> +# SPDX-License-Identifier: BSD-2-Clause-Patent
> +# https://spdx.org/licenses
> +#
> +# Copyright (C) 2022 Marvell
> +# Module description file of RTC NULL driver.
> +#
> +#**/
> +
> +[Defines]
> + INF_VERSION = 0x00010005
> + BASE_NAME = RtcNullDxe
> + FILE_GUID = 9c0a0971-b0f6-442e-ac01-0a3eb52c457d
> + MODULE_TYPE = DXE_RUNTIME_DRIVER
> + VERSION_STRING = 1.0
> +
> + ENTRY_POINT = RtcNullDxeInitialize
> +
> +
> +[Sources]
> + RtcNullDxe.c
> + RtcNullDxe.h
> +
> +[Packages]
> + MdePkg/MdePkg.dec
> + MdeModulePkg/MdeModulePkg.dec
> +
> +[LibraryClasses]
> + DebugLib
> + MemoryAllocationLib
> + UefiDriverEntryPoint
> + BaseMemoryLib
> + UefiBootServicesTableLib
> + UefiRuntimeLib
> + UefiRuntimeServicesTableLib
> +
> +[Guids]
> + gEfiEventVirtualAddressChangeGuid
> +
> +[Protocols]
> + gEfiRealTimeClockArchProtocolGuid ## PRODUCES
> +
> +[Depex]
> + TRUE
> +
> --
> 2.34.1
>
>
>
>
>
>
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