projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 4c725c89 AB |
1 | /** @file\r |
| 2 | *\r | |
| 3 | * Copyright (c) 2017, Linaro, Ltd. All rights reserved.\r | |
| 4 | *\r | |
| 878b807a | 5 | * SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| 4c725c89 AB |
6 | *\r |
| 7 | **/\r | |
| 8 | \r | |
| 9 | #include <PiDxe.h>\r | |
| 10 | \r | |
| 11 | #include <Library/BaseLib.h>\r | |
| 12 | #include <Library/DxeServicesLib.h>\r | |
| 13 | #include <Library/MemoryAllocationLib.h>\r | |
| 14 | \r | |
| 15 | /**\r | |
| 16 | Return a pool allocated copy of the DTB image that is appropriate for\r | |
| 17 | booting the current platform via DT.\r | |
| 18 | \r | |
| 19 | @param[out] Dtb Pointer to the DTB copy\r | |
| 20 | @param[out] DtbSize Size of the DTB copy\r | |
| 21 | \r | |
| 22 | @retval EFI_SUCCESS Operation completed successfully\r | |
| 23 | @retval EFI_NOT_FOUND No suitable DTB image could be located\r | |
| 24 | @retval EFI_OUT_OF_RESOURCES No pool memory available\r | |
| 25 | \r | |
| 26 | **/\r | |
| 27 | EFI_STATUS\r | |
| 28 | EFIAPI\r | |
| 29 | DtPlatformLoadDtb (\r | |
| e7108d0e MK |
30 | OUT VOID **Dtb,\r |
| 31 | OUT UINTN *DtbSize\r | |
| 4c725c89 AB |
32 | )\r |
| 33 | {\r | |
| e7108d0e MK |
34 | EFI_STATUS Status;\r |
| 35 | VOID *OrigDtb;\r | |
| 36 | VOID *CopyDtb;\r | |
| 37 | UINTN OrigDtbSize;\r | |
| 38 | \r | |
| 39 | Status = GetSectionFromAnyFv (\r | |
| 40 | &gDtPlatformDefaultDtbFileGuid,\r | |
| 41 | EFI_SECTION_RAW,\r | |
| 42 | 0,\r | |
| 43 | &OrigDtb,\r | |
| 44 | &OrigDtbSize\r | |
| 45 | );\r | |
| 4c725c89 AB |
46 | if (EFI_ERROR (Status)) {\r |
| 47 | return EFI_NOT_FOUND;\r | |
| 48 | }\r | |
| 49 | \r | |
| 50 | CopyDtb = AllocateCopyPool (OrigDtbSize, OrigDtb);\r | |
| 51 | if (CopyDtb == NULL) {\r | |
| 52 | return EFI_OUT_OF_RESOURCES;\r | |
| 53 | }\r | |
| 54 | \r | |
| e7108d0e | 55 | *Dtb = CopyDtb;\r |
| 4c725c89 AB |
56 | *DtbSize = OrigDtbSize;\r |
| 57 | \r | |
| 58 | return EFI_SUCCESS;\r | |
| 59 | }\r |