/* Get the mem size need to be reserved in PEI phase. */
UINT64 RetrieveRequiredMemorySize(IN EFI_PEI_SERVICES **PeiServices)
/* Get the mem size need to be reserved in PEI phase. */
UINT64 RetrieveRequiredMemorySize(IN EFI_PEI_SERVICES **PeiServices)
{
  UINT64  Size;
  Size = GetMemorySizeInMemoryTypeInformation (PeiServices);
  return Size + PEI_ADDITIONAL_MEMORY_SIZE;
}