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/** @file
Boot service PEI BIOS ID library implementation.
Copyright (c) 2015 - 2023, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <PiPei.h>
#include <Library/BaseLib.h>
#include <Library/PeiServicesLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/HobLib.h>
#include <Library/DebugLib.h>
#include <Library/BiosIdLib.h>
#include <Guid/BiosId.h>
/**
This function returns BIOS ID by searching HOB or FV.
It also debug print the BIOS ID found.
@param[out] BiosIdImage The BIOS ID got from HOB or FV. It is optional,
no BIOS ID will be returned if it is NULL as input.
@retval EFI_SUCCESS BIOS ID has been got successfully.
@retval EFI_NOT_FOUND BIOS ID image is not found, and no parameter will be modified.
**/
EFI_STATUS
EFIAPI
GetBiosId (
OUT BIOS_ID_IMAGE *BiosIdImage OPTIONAL
)
{
EFI_STATUS Status;
BIOS_ID_IMAGE TempBiosIdImage;
VOID *Address;
UINTN Size;
UINTN Instance;
EFI_PEI_FV_HANDLE VolumeHandle;
EFI_PEI_FILE_HANDLE FileHandle;
Address = NULL;
Size = 0;
if (BiosIdImage == NULL) {
//
// It is NULL as input, so no BIOS ID will be returned.
// Use temp buffer to hold the BIOS ID.
//
BiosIdImage = &TempBiosIdImage;
}
Address = GetFirstGuidHob (&gBiosIdGuid);
if (Address != NULL) {
Size = sizeof (BIOS_ID_IMAGE);
CopyMem ((VOID *)BiosIdImage, GET_GUID_HOB_DATA (Address), Size);
DEBUG ((DEBUG_INFO, "PEI get BIOS ID from HOB successfully\n"));
DEBUG ((DEBUG_INFO, "BIOS ID: %s\n", (CHAR16 *)(&(BiosIdImage->BiosIdString))));
return EFI_SUCCESS;
}
VolumeHandle = NULL;
Instance = 0;
while (TRUE) {
//
// Traverse all firmware volume instances.
//
Status = PeiServicesFfsFindNextVolume (Instance, &VolumeHandle);
if (EFI_ERROR (Status)) {
break;
}
FileHandle = NULL;
Status = PeiServicesFfsFindFileByName (&gBiosIdGuid, VolumeHandle, &FileHandle);
if (!EFI_ERROR (Status)) {
//
// Search RAW section.
//
Status = PeiServicesFfsFindSectionData (EFI_SECTION_RAW, FileHandle, &Address);
if (!EFI_ERROR (Status)) {
//
// BIOS ID image is present in this FV.
//
Size = sizeof (BIOS_ID_IMAGE);
CopyMem ((VOID *)BiosIdImage, Address, Size);
DEBUG ((DEBUG_INFO, "PEI get BIOS ID from FV successfully\n"));
DEBUG ((DEBUG_INFO, "BIOS ID: %s\n", (CHAR16 *)(&(BiosIdImage->BiosIdString))));
//
// Build GUID HOB for the BIOS ID image.
//
BuildGuidDataHob (&gBiosIdGuid, Address, Size);
return EFI_SUCCESS;
}
}
//
// Search the next volume.
//
Instance++;
}
DEBUG ((DEBUG_ERROR, "PEI get BIOS ID failed: %r\n", EFI_NOT_FOUND));
return EFI_NOT_FOUND;
}
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