1 /* 2 * Copyright 2014 Broadcom Corporation. 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <part.h> 8 #include <sparse_format.h> 9 10 #define ROUNDUP(x, y) (((x) + ((y) - 1)) & ~((y) - 1)) 11 12 struct sparse_storage { 13 lbaint_t blksz; 14 lbaint_t start; 15 lbaint_t size; 16 void *priv; 17 18 lbaint_t (*write)(struct sparse_storage *info, 19 lbaint_t blk, 20 lbaint_t blkcnt, 21 const void *buffer); 22 23 lbaint_t (*reserve)(struct sparse_storage *info, 24 lbaint_t blk, 25 lbaint_t blkcnt); 26 }; 27 28 static inline int is_sparse_image(void *buf) 29 { 30 sparse_header_t *s_header = (sparse_header_t *)buf; 31 32 if ((le32_to_cpu(s_header->magic) == SPARSE_HEADER_MAGIC) && 33 (le16_to_cpu(s_header->major_version) == 1)) 34 return 1; 35 36 return 0; 37 } 38 39 void write_sparse_image(struct sparse_storage *info, const char *part_name, 40 void *data, unsigned sz); 41