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1 | /** @file\r | |
2 | \r | |
3 | Copyright (c) 2013-2014, ARM Ltd. All rights reserved.<BR>\r | |
4 | \r | |
5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
6 | \r | |
7 | **/\r | |
8 | \r | |
9 | #include "AndroidFastbootApp.h"\r | |
10 | \r | |
11 | // Find the kernel and ramdisk in an Android boot.img.\r | |
12 | // return EFI_INVALID_PARAMETER if the boot.img is invalid (i.e. doesn't have the\r | |
13 | // right magic value),\r | |
14 | // return EFI_NOT_FOUND if there was no kernel in the boot.img.\r | |
15 | // Note that the Ramdisk is optional - *Ramdisk won't be touched if it isn't\r | |
16 | // present, but RamdiskSize will be set to 0.\r | |
17 | EFI_STATUS\r | |
18 | ParseAndroidBootImg (\r | |
19 | IN VOID *BootImg,\r | |
20 | OUT VOID **Kernel,\r | |
21 | OUT UINTN *KernelSize,\r | |
22 | OUT VOID **Ramdisk,\r | |
23 | OUT UINTN *RamdiskSize,\r | |
24 | OUT CHAR8 *KernelArgs\r | |
25 | )\r | |
26 | {\r | |
27 | ANDROID_BOOTIMG_HEADER *Header;\r | |
28 | UINT8 *BootImgBytePtr;\r | |
29 | \r | |
30 | // Cast to UINT8 so we can do pointer arithmetic\r | |
31 | BootImgBytePtr = (UINT8 *)BootImg;\r | |
32 | \r | |
33 | Header = (ANDROID_BOOTIMG_HEADER *)BootImg;\r | |
34 | \r | |
35 | if (AsciiStrnCmp (\r | |
36 | (CONST CHAR8 *)Header->BootMagic,\r | |
37 | ANDROID_BOOT_MAGIC,\r | |
38 | ANDROID_BOOT_MAGIC_LENGTH\r | |
39 | ) != 0)\r | |
40 | {\r | |
41 | return EFI_INVALID_PARAMETER;\r | |
42 | }\r | |
43 | \r | |
44 | if (Header->KernelSize == 0) {\r | |
45 | return EFI_NOT_FOUND;\r | |
46 | }\r | |
47 | \r | |
48 | ASSERT (IS_VALID_ANDROID_PAGE_SIZE (Header->PageSize));\r | |
49 | \r | |
50 | *KernelSize = Header->KernelSize;\r | |
51 | *Kernel = BootImgBytePtr + Header->PageSize;\r | |
52 | *RamdiskSize = Header->RamdiskSize;\r | |
53 | \r | |
54 | if (Header->RamdiskSize != 0) {\r | |
55 | *Ramdisk = (VOID *)(BootImgBytePtr\r | |
56 | + Header->PageSize\r | |
57 | + ALIGN_VALUE (Header->KernelSize, Header->PageSize));\r | |
58 | }\r | |
59 | \r | |
60 | AsciiStrnCpyS (\r | |
61 | KernelArgs,\r | |
62 | ANDROID_BOOTIMG_KERNEL_ARGS_SIZE,\r | |
63 | Header->KernelArgs,\r | |
64 | ANDROID_BOOTIMG_KERNEL_ARGS_SIZE\r | |
65 | );\r | |
66 | \r | |
67 | return EFI_SUCCESS;\r | |
68 | }\r |