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 | |
| 5 | * This program and the accompanying materials\r | |
| 6 | * are licensed and made available under the terms and conditions of the BSD License\r | |
| 7 | * which accompanies this distribution. The full text of the license may be found at\r | |
| 8 | * http://opensource.org/licenses/bsd-license.php\r | |
| 9 | *\r | |
| 10 | * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 11 | * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 12 | *\r | |
| 13 | **/\r | |
| 14 | \r | |
| 15 | #include <PiDxe.h>\r | |
| 16 | \r | |
| 17 | #include <Library/BaseLib.h>\r | |
| 18 | #include <Library/DxeServicesLib.h>\r | |
| 19 | #include <Library/MemoryAllocationLib.h>\r | |
| 20 | \r | |
| 21 | /**\r | |
| 22 | Return a pool allocated copy of the DTB image that is appropriate for\r | |
| 23 | booting the current platform via DT.\r | |
| 24 | \r | |
| 25 | @param[out] Dtb Pointer to the DTB copy\r | |
| 26 | @param[out] DtbSize Size of the DTB copy\r | |
| 27 | \r | |
| 28 | @retval EFI_SUCCESS Operation completed successfully\r | |
| 29 | @retval EFI_NOT_FOUND No suitable DTB image could be located\r | |
| 30 | @retval EFI_OUT_OF_RESOURCES No pool memory available\r | |
| 31 | \r | |
| 32 | **/\r | |
| 33 | EFI_STATUS\r | |
| 34 | EFIAPI\r | |
| 35 | DtPlatformLoadDtb (\r | |
| 36 | OUT VOID **Dtb,\r | |
| 37 | OUT UINTN *DtbSize\r | |
| 38 | )\r | |
| 39 | {\r | |
| 40 | EFI_STATUS Status;\r | |
| 41 | VOID *OrigDtb;\r | |
| 42 | VOID *CopyDtb;\r | |
| 43 | UINTN OrigDtbSize;\r | |
| 44 | \r | |
| 45 | Status = GetSectionFromAnyFv (&gDtPlatformDefaultDtbFileGuid,\r | |
| 46 | EFI_SECTION_RAW, 0, &OrigDtb, &OrigDtbSize);\r | |
| 47 | if (EFI_ERROR (Status)) {\r | |
| 48 | return EFI_NOT_FOUND;\r | |
| 49 | }\r | |
| 50 | \r | |
| 51 | CopyDtb = AllocateCopyPool (OrigDtbSize, OrigDtb);\r | |
| 52 | if (CopyDtb == NULL) {\r | |
| 53 | return EFI_OUT_OF_RESOURCES;\r | |
| 54 | }\r | |
| 55 | \r | |
| 56 | *Dtb = CopyDtb;\r | |
| 57 | *DtbSize = OrigDtbSize;\r | |
| 58 | \r | |
| 59 | return EFI_SUCCESS;\r | |
| 60 | }\r |