106 lines
3.3 KiB
C
106 lines
3.3 KiB
C
/** @file
|
|
Provide OEM to customize the Hardware Signature.
|
|
|
|
;******************************************************************************
|
|
;* Copyright (c) 2014, Insyde Software Corp. All Rights Reserved.
|
|
;*
|
|
;* You may not reproduce, distribute, publish, display, perform, modify, adapt,
|
|
;* transmit, broadcast, present, recite, release, license or otherwise exploit
|
|
;* any part of this publication in any form, by any means, without the prior
|
|
;* written permission of Insyde Software Corporation.
|
|
;*
|
|
;******************************************************************************
|
|
*/
|
|
|
|
#include <Library/DxeOemSvcKernelLib.h>
|
|
#include <Library/UefiRuntimeServicesTableLib.h>
|
|
#include <Library/MemoryAllocationLib.h>
|
|
#include <Library/BaseMemoryLib.h>
|
|
#include <Library/DebugLib.h>
|
|
//_Start_L05_ACPI_HARDWARE_SIGNATURE_
|
|
#include "L05Hook/UpdateHardwareSignature.h"
|
|
//_End_L05_ACPI_HARDWARE_SIGNATURE_
|
|
|
|
/**
|
|
To determine Hardware Signature by oem.
|
|
|
|
@param[in,out] HardwareSignature Value of Hardware Signature.
|
|
|
|
@retval EFI_SUCCESS The hardware signature has already been updated by this
|
|
function. The Kernel should not update the hardware
|
|
signature.
|
|
@retval EFI_MEDIA_CHANGED Hardware Signature was updated by this function. Then
|
|
Kernel will update the FACS with the returned Hardware
|
|
Signature.
|
|
@retval EFI_UNSUPPORTED The hardware signature was not updated by this function.
|
|
**/
|
|
EFI_STATUS
|
|
OemSvcUpdateAcpiFacsHardwareSignature (
|
|
IN OUT UINT32 *HardwareSignature
|
|
)
|
|
{
|
|
/*++
|
|
Todo:
|
|
Add project specific code in here.
|
|
--*/
|
|
|
|
EFI_STATUS Status;
|
|
UINTN DataSize = 0;
|
|
UINT8 *Data;
|
|
UINT8 Value = 0;
|
|
|
|
//_Start_L05_ACPI_HARDWARE_SIGNATURE_
|
|
#ifdef L05_ALL_FEATURE_ENABLE
|
|
UpdateHardwareSignature (HardwareSignature);
|
|
#endif
|
|
//_End_L05_ACPI_HARDWARE_SIGNATURE_
|
|
|
|
Status = gRT->GetVariable (
|
|
L"FullReset",
|
|
&gEfiGenericVariableGuid,
|
|
NULL,
|
|
&DataSize,
|
|
NULL
|
|
);
|
|
|
|
if (Status == EFI_BUFFER_TOO_SMALL) {
|
|
Data = AllocateZeroPool (DataSize);
|
|
ASSERT (Data != NULL);
|
|
|
|
if (Data == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
} else {
|
|
Status = gRT->GetVariable (
|
|
L"FullReset",
|
|
&gEfiGenericVariableGuid,
|
|
NULL,
|
|
&DataSize,
|
|
Data
|
|
);
|
|
|
|
if (!EFI_ERROR(Status)) {
|
|
if (*Data != 0) {
|
|
*HardwareSignature += (UINT32)*Data;
|
|
return EFI_MEDIA_CHANGED;
|
|
}
|
|
}
|
|
}
|
|
} else if (Status == EFI_NOT_FOUND) {
|
|
//
|
|
// set FullReset variable
|
|
//
|
|
Status = gRT->SetVariable (
|
|
L"FullReset",
|
|
&gEfiGenericVariableGuid,
|
|
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
|
|
sizeof (UINT8),
|
|
&Value
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
return EFI_UNSUPPORTED;
|
|
}
|