projects / J-u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 83d290c5 | 1 | /* SPDX-License-Identifier: BSD-3-Clause */ |
| 478a3287 CC |
2 | /* |
| 3 | * This is from the Android Project, | |
| 4 | * Repository: https://android.googlesource.com/platform/system/core | |
| 5 | * File: libsparse/sparse_format.h | |
| 6 | * Commit: 28fa5bc347390480fe190294c6c385b6a9f0d68b | |
| 7 | * Copyright (C) 2010 The Android Open Source Project | |
| 478a3287 CC |
8 | */ |
| 9 | ||
| 10 | #ifndef _LIBSPARSE_SPARSE_FORMAT_H_ | |
| 11 | #define _LIBSPARSE_SPARSE_FORMAT_H_ | |
| 12 | #include "sparse_defs.h" | |
| 13 | ||
| 14 | typedef struct sparse_header { | |
| 15 | __le32 magic; /* 0xed26ff3a */ | |
| 16 | __le16 major_version; /* (0x1) - reject images with higher major versions */ | |
| 17 | __le16 minor_version; /* (0x0) - allow images with higer minor versions */ | |
| 18 | __le16 file_hdr_sz; /* 28 bytes for first revision of the file format */ | |
| 19 | __le16 chunk_hdr_sz; /* 12 bytes for first revision of the file format */ | |
| 20 | __le32 blk_sz; /* block size in bytes, must be a multiple of 4 (4096) */ | |
| 21 | __le32 total_blks; /* total blocks in the non-sparse output image */ | |
| 22 | __le32 total_chunks; /* total chunks in the sparse input image */ | |
| 23 | __le32 image_checksum; /* CRC32 checksum of the original data, counting "don't care" */ | |
| 24 | /* as 0. Standard 802.3 polynomial, use a Public Domain */ | |
| 25 | /* table implementation */ | |
| 26 | } sparse_header_t; | |
| 27 | ||
| 28 | #define SPARSE_HEADER_MAGIC 0xed26ff3a | |
| 29 | ||
| 30 | #define CHUNK_TYPE_RAW 0xCAC1 | |
| 31 | #define CHUNK_TYPE_FILL 0xCAC2 | |
| 32 | #define CHUNK_TYPE_DONT_CARE 0xCAC3 | |
| 33 | #define CHUNK_TYPE_CRC32 0xCAC4 | |
| 34 | ||
| 35 | typedef struct chunk_header { | |
| 36 | __le16 chunk_type; /* 0xCAC1 -> raw; 0xCAC2 -> fill; 0xCAC3 -> don't care */ | |
| 37 | __le16 reserved1; | |
| 38 | __le32 chunk_sz; /* in blocks in output image */ | |
| 39 | __le32 total_sz; /* in bytes of chunk input file including chunk header and data */ | |
| 40 | } chunk_header_t; | |
| 41 | ||
| 42 | /* Following a Raw or Fill or CRC32 chunk is data. | |
| 43 | * For a Raw chunk, it's the data in chunk_sz * blk_sz. | |
| 44 | * For a Fill chunk, it's 4 bytes of the fill data. | |
| 45 | * For a CRC32 chunk, it's 4 bytes of CRC32 | |
| 46 | */ | |
| 47 | ||
| 48 | #endif |