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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 |