diff options
Diffstat (limited to 'roms/edk2/EmbeddedPkg/Library/DxeDtPlatformDtbLoaderLibDefault')
2 files changed, 84 insertions, 0 deletions
diff --git a/roms/edk2/EmbeddedPkg/Library/DxeDtPlatformDtbLoaderLibDefault/DxeDtPlatformDtbLoaderLibDefault.c b/roms/edk2/EmbeddedPkg/Library/DxeDtPlatformDtbLoaderLibDefault/DxeDtPlatformDtbLoaderLibDefault.c new file mode 100644 index 000000000..87a9cd25e --- /dev/null +++ b/roms/edk2/EmbeddedPkg/Library/DxeDtPlatformDtbLoaderLibDefault/DxeDtPlatformDtbLoaderLibDefault.c @@ -0,0 +1,54 @@ +/** @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;
+}
diff --git a/roms/edk2/EmbeddedPkg/Library/DxeDtPlatformDtbLoaderLibDefault/DxeDtPlatformDtbLoaderLibDefault.inf b/roms/edk2/EmbeddedPkg/Library/DxeDtPlatformDtbLoaderLibDefault/DxeDtPlatformDtbLoaderLibDefault.inf new file mode 100644 index 000000000..80ae61eed --- /dev/null +++ b/roms/edk2/EmbeddedPkg/Library/DxeDtPlatformDtbLoaderLibDefault/DxeDtPlatformDtbLoaderLibDefault.inf @@ -0,0 +1,30 @@ +/** @file
+*
+* Copyright (c) 2017, Linaro, Ltd. All rights reserved.
+*
+* SPDX-License-Identifier: BSD-2-Clause-Patent
+*
+**/
+
+[Defines]
+ INF_VERSION = 0x00010019
+ BASE_NAME = DxeDtPlatformDtbLoaderLibDefault
+ FILE_GUID = 419a1910-70da-4c99-8696-ba81a57be508
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = DtPlatformDtbLoaderLib|DXE_DRIVER
+
+[Sources]
+ DxeDtPlatformDtbLoaderLibDefault.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ EmbeddedPkg/EmbeddedPkg.dec
+
+[LibraryClasses]
+ BaseLib
+ DxeServicesLib
+ MemoryAllocationLib
+
+[Guids]
+ gDtPlatformDefaultDtbFileGuid
|