Function PadFvImage

BaseTools/Source/C/GenFv/GenFvInternalLib.c:1399–1490

}

EFI_STATUS
PadFvImage (
  IN MEMORY_FILE          *FvImage,
  IN EFI_FFS_FILE_HEADER  *VtfFileImage
  )
/*++

Routine Description:

  This function places a pad file between the last file in the FV and the VTF
  file if the VTF file exists.

Arguments:

  FvImage       Memory file for the FV memory image
  VtfFileImage  The address of the VTF file.  If this is the end of the FV
                image, no VTF exists and no pad file is needed.

Returns:

  EFI_SUCCESS             Completed successfully.
  EFI_INVALID_PARAMETER   One of the input parameters was NULL.

--*/
{
  EFI_FFS_FILE_HEADER *PadFile;
  UINTN               FileSize;
  UINT32              FfsHeaderSize;

  //
  // If there is no VTF or the VTF naturally follows the previous file without a
  // pad file, then there's nothing to do
  //
  if ((UINTN) VtfFileImage == (UINTN) FvImage->Eof || \
      ((UINTN) VtfFileImage == (UINTN) FvImage->CurrentFilePointer)) {
    return EFI_SUCCESS;
  }

  if ((UINTN) VtfFileImage < (UINTN) FvImage->CurrentFilePointer) {
    return EFI_INVALID_PARAMETER;
  }

  //
  // Pad file starts at beginning of free space
  //
  PadFile = (EFI_FFS_FILE_HEADER *) FvImage->CurrentFilePointer;

  //
  // write PadFile FFS header with PadType, don't need to set PAD file guid in its header.
  //
  PadFile->Type       = EFI_FV_FILETYPE_FFS_PAD;
  PadFile->Attributes = 0;

  //
  // FileSize includes the EFI_FFS_FILE_HEADER
  //
  FileSize          = (UINTN) VtfFileImage - (UINTN) FvImage->CurrentFilePointer;
  if (FileSize >= MAX_FFS_SIZE) {