1 files changed, 60 insertions, 0 deletions
diff --git a/EmbeddedPkg/Library/DxeDtPlatformDtbLoaderLibDefault/DxeDtPlatformDtbLoaderLibDefault.c b/EmbeddedPkg/Library/DxeDtPlatformDtbLoaderLibDefault/DxeDtPlatformDtbLoaderLibDefault.c
new file mode 100644
index 000000000..313d0b104
--- /dev/null
+++ b/EmbeddedPkg/Library/DxeDtPlatformDtbLoaderLibDefault/DxeDtPlatformDtbLoaderLibDefault.c
@@ -0,0 +1,60 @@
+/** @file
+*
+*  Copyright (c) 2017, Linaro, Ltd. All rights reserved.
+*
+*  This program and the accompanying materials
+*  are licensed and made available under the terms and conditions of the BSD License
+*  which accompanies this distribution.  The full text of the license may be found at
+*  http://opensource.org/licenses/bsd-license.php
+*
+*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+*
+**/
+
+#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;
+}