DxeDtPlatformDtbLoaderLibDefault.c

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#include <PiDxe.h>
 
#include <Library/BaseLib.h>
#include <Library/DxeServicesLib.h>
#include <Library/MemoryAllocationLib.h>
 
EFI_STATUS
EFIAPI
DtPlatformLoadDtb (
  OUT   VOID   **Dtb,
  OUT   UINTN  *DtbSize
  )
{
  EFI_STATUS  Status;
  VOID        *OrigDtb;
  VOID        *CopyDtb;
  UINTN       OrigDtbSize;
 
  Status = GetSectionFromAnyFv (
             &gDtPlatformDefaultDtbFileGuid,
             EFI_SECTION_RAW,
             0,
             &OrigDtb,
             &OrigDtbSize
             );
  if (EFI_ERROR (Status)) {
    return EFI_NOT_FOUND;
  }
 
  CopyDtb = AllocateCopyPool (OrigDtbSize, OrigDtb);
  if (CopyDtb == NULL) {
    return EFI_OUT_OF_RESOURCES;
  }
 
  *Dtb     = CopyDtb;
  *DtbSize = OrigDtbSize;
 
  return EFI_SUCCESS;
}