1a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner/* 2a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner * Copyright (C) 2010 The Android Open Source Project 3a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner * 4a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner * Licensed under the Apache License, Version 2.0 (the "License"); 5a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner * you may not use this file except in compliance with the License. 6a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner * You may obtain a copy of the License at 7a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner * 8a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner * http://www.apache.org/licenses/LICENSE-2.0 9a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner * 10a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner * Unless required by applicable law or agreed to in writing, software 11a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner * distributed under the License is distributed on an "AS IS" BASIS, 12a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner * See the License for the specific language governing permissions and 14a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner * limitations under the License. 15a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner */ 16a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner 17a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner#ifndef _LIBSPARSE_SPARSE_FORMAT_H_ 18a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner#define _LIBSPARSE_SPARSE_FORMAT_H_ 19a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner#include "sparse_defs.h" 20a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner 21a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turnertypedef struct sparse_header { 22a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner __le32 magic; /* 0xed26ff3a */ 23a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner __le16 major_version; /* (0x1) - reject images with higher major versions */ 24a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner __le16 minor_version; /* (0x0) - allow images with higer minor versions */ 25a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner __le16 file_hdr_sz; /* 28 bytes for first revision of the file format */ 26a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner __le16 chunk_hdr_sz; /* 12 bytes for first revision of the file format */ 27a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner __le32 blk_sz; /* block size in bytes, must be a multiple of 4 (4096) */ 28a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner __le32 total_blks; /* total blocks in the non-sparse output image */ 29a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner __le32 total_chunks; /* total chunks in the sparse input image */ 30a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner __le32 image_checksum; /* CRC32 checksum of the original data, counting "don't care" */ 31a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner /* as 0. Standard 802.3 polynomial, use a Public Domain */ 32a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner /* table implementation */ 33a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner} sparse_header_t; 34a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner 35a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner#define SPARSE_HEADER_MAGIC 0xed26ff3a 36a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner 37a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner#define CHUNK_TYPE_RAW 0xCAC1 38a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner#define CHUNK_TYPE_FILL 0xCAC2 39a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner#define CHUNK_TYPE_DONT_CARE 0xCAC3 40a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner#define CHUNK_TYPE_CRC32 0xCAC4 41a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner 42a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turnertypedef struct chunk_header { 43a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner __le16 chunk_type; /* 0xCAC1 -> raw; 0xCAC2 -> fill; 0xCAC3 -> don't care */ 44a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner __le16 reserved1; 45a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner __le32 chunk_sz; /* in blocks in output image */ 46a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner __le32 total_sz; /* in bytes of chunk input file including chunk header and data */ 47a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner} chunk_header_t; 48a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner 49a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner/* Following a Raw or Fill or CRC32 chunk is data. 50a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner * For a Raw chunk, it's the data in chunk_sz * blk_sz. 51a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner * For a Fill chunk, it's 4 bytes of the fill data. 52a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner * For a CRC32 chunk, it's 4 bytes of CRC32 53a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner */ 54a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner 55a2394cf2fab37ca4ec91e57db74f06f15a3656beDavid 'Digit' Turner#endif 56