/** @file
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*
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* Copyright (c) 2017, Linaro, Ltd. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-2-Clause-Patent
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*
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**/
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#include <PiDxe.h>
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#include <Library/BaseLib.h>
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#include <Library/DxeServicesLib.h>
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#include <Library/MemoryAllocationLib.h>
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/**
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Return a pool allocated copy of the DTB image that is appropriate for
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booting the current platform via DT.
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@param[out] Dtb Pointer to the DTB copy
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@param[out] DtbSize Size of the DTB copy
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@retval EFI_SUCCESS Operation completed successfully
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@retval EFI_NOT_FOUND No suitable DTB image could be located
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@retval EFI_OUT_OF_RESOURCES No pool memory available
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**/
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EFI_STATUS
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EFIAPI
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DtPlatformLoadDtb (
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OUT VOID **Dtb,
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OUT UINTN *DtbSize
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)
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{
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EFI_STATUS Status;
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VOID *OrigDtb;
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VOID *CopyDtb;
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UINTN OrigDtbSize;
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Status = GetSectionFromAnyFv (&gDtPlatformDefaultDtbFileGuid,
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EFI_SECTION_RAW, 0, &OrigDtb, &OrigDtbSize);
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if (EFI_ERROR (Status)) {
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return EFI_NOT_FOUND;
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}
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CopyDtb = AllocateCopyPool (OrigDtbSize, OrigDtb);
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if (CopyDtb == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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*Dtb = CopyDtb;
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*DtbSize = OrigDtbSize;
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return EFI_SUCCESS;
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}
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