73 lines
2.1 KiB
C
73 lines
2.1 KiB
C
/** @file
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Reterive specific FFS routines
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;******************************************************************************
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;* Copyright (c) 2012 - 2016, Insyde Software Corp. All Rights Reserved.
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;*
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;* You may not reproduce, distribute, publish, display, perform, modify, adapt,
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;* transmit, broadcast, present, recite, release, license or otherwise exploit
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;* any part of this publication in any form, by any means, without the prior
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;* written permission of Insyde Software Corporation.
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;*
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;******************************************************************************
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*/
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#include <PiPei.h>
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#include <Library/BaseLib.h>
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#include <Library/PeiServicesLib.h>
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#include <Library/BaseMemoryLib.h>
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/**
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Retrive firmware binary from a PE formated image (standalone flash utility)
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@param [in] FileGuid A pointer to the file GUID
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@param [out] Data A pointer to the data being loaded
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@param [out] DataSize A pointer to the size of the data loaded
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@retval EFI_SUCCESS The file data was successfully loaded
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@retval EFI_NOT_FOUND Unable to find the file
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**/
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EFI_STATUS
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RetrieveSpecificFfsInFv (
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IN EFI_GUID *FileGuid,
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OUT UINT8 **Data,
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OUT UINT32 *DataSize
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)
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{
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EFI_FIRMWARE_VOLUME_HEADER *Fv;
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EFI_FFS_FILE_HEADER *FileHeader;
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EFI_STATUS Status;
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UINT32 Instance;
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Instance = 0;
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while (TRUE) {
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Status = PeiServicesFfsFindNextVolume (Instance, (VOID **)&Fv);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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FileHeader = NULL;
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//
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// Start new search in volume
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//
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while (TRUE) {
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Status = PeiServicesFfsFindNextFile (EFI_FV_FILETYPE_RAW, Fv, (VOID **)&FileHeader);
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if (Status == EFI_NOT_FOUND) {
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break;
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}
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if (CompareGuid (&(FileHeader->Name), FileGuid)) {
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*Data = (UINT8 *) FileHeader + sizeof (EFI_FFS_FILE_HEADER);
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*DataSize = *(UINT32 *)(FileHeader->Size) & 0x00FFFFFF;
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*DataSize -= sizeof (EFI_FFS_FILE_HEADER);
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return EFI_SUCCESS;
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}
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}
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Instance += 1;
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}
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return EFI_NOT_FOUND;
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}
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