blob: 6c3c810cf2ab441fe0e370d6da5e7789c415d078 [file] [log] [blame]
/*
* Copyright 2011, Marvell Semiconductor Inc.
* Lei Wen <leiwen@marvell.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
typedef struct sparse_header {
__le32 magic; /* 0xed26ff3a */
__le16 major_version; /* (0x1) - reject images with higher major versions */
__le16 minor_version; /* (0x0) - allow images with higer minor versions */
__le16 file_hdr_sz; /* 28 bytes for first revision of the file format */
__le16 chunk_hdr_sz; /* 12 bytes for first revision of the file format */
__le32 blk_sz; /* block size in bytes, must be a multiple of 4 (4096) */
__le32 total_blks; /* total blocks in the non-sparse output image */
__le32 total_chunks; /* total chunks in the sparse input image */
__le32 image_checksum; /* CRC32 checksum of the original data, counting "don't care" */
/* as 0. Standard 802.3 polynomial, use a Public Domain */
/* table implementation */
__le32 reserved1;
} sparse_header_t;
#define SPARSE_HEADER_MAGIC 0xed26ff3a
#define CHUNK_TYPE_RAW 0xCAC1
#define CHUNK_TYPE_FILL 0xCAC2
#define CHUNK_TYPE_DONT_CARE 0xCAC3
typedef struct chunk_header {
__le16 chunk_type; /* 0xCAC1 -> raw; 0xCAC2 -> fill; 0xCAC3 -> don't care */
__le16 reserved1;
__le32 reserved2;
__le32 chunk_sz; /* in blocks in output image */
__le32 total_sz; /* in bytes of chunk input file including chunk header and data */
} chunk_header_t;