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/** @file
Boot service DXE BIOS ID library implementation.
These functions in this file can be called during DXE and cannot be called during runtime
or in SMM which should use a RT or SMM library.
Copyright (c) 2015 - 2023, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <PiDxe.h>
#include <Library/BaseLib.h>
#include <Library/HobLib.h>
#include <Library/DxeServicesLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.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;
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, "DXE get BIOS ID from HOB successfully\n"));
DEBUG ((DEBUG_INFO, "BIOS ID: %s\n", (CHAR16 *)(&(BiosIdImage->BiosIdString))));
return EFI_SUCCESS;
}
Status = GetSectionFromAnyFv (
&gBiosIdGuid,
EFI_SECTION_RAW,
0,
&Address,
&Size
);
if ((Status == EFI_SUCCESS) && (Address != NULL)) {
//
// BIOS ID image is present in FV.
//
Size = sizeof (BIOS_ID_IMAGE);
CopyMem ((VOID *)BiosIdImage, Address, Size);
//
// GetSectionFromAnyFv () allocated buffer for Address, now free it.
//
FreePool (Address);
DEBUG ((DEBUG_INFO, "DXE get BIOS ID from FV successfully\n"));
DEBUG ((DEBUG_INFO, "BIOS ID: %s\n", (CHAR16 *)(&(BiosIdImage->BiosIdString))));
return EFI_SUCCESS;
}
DEBUG ((DEBUG_ERROR, "DXE get BIOS ID failed: %r\n", EFI_NOT_FOUND));
return EFI_NOT_FOUND;
}
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