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/** @file
*
* Copyright (c) 2017, Linaro, Ltd. All rights reserved.
*
* SPDX-License-Identifier: BSD-2-Clause-Patent
*
**/
#include <PiDxe.h>
#include <Library/BaseLib.h>
#include <Library/DxeServicesLib.h>
#include <Library/MemoryAllocationLib.h>
/**
Return a pool allocated copy of the DTB image that is appropriate for
booting the current platform via DT.
@param[out] Dtb Pointer to the DTB copy
@param[out] DtbSize Size of the DTB copy
@retval EFI_SUCCESS Operation completed successfully
@retval EFI_NOT_FOUND No suitable DTB image could be located
@retval EFI_OUT_OF_RESOURCES No pool memory available
**/
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;
}
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