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1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * Copyright 2014 Broadcom Corporation.
4  */
5 
6 #include <part.h>
7 #include <sparse_format.h>
8 
9 #define ROUNDUP(x, y)	(((x) + ((y) - 1)) & ~((y) - 1))
10 
11 struct sparse_storage {
12 	lbaint_t	blksz;
13 	lbaint_t	start;
14 	lbaint_t	size;
15 	void		*priv;
16 
17 	lbaint_t	(*write)(struct sparse_storage *info,
18 				 lbaint_t blk,
19 				 lbaint_t blkcnt,
20 				 const void *buffer);
21 
22 	lbaint_t	(*reserve)(struct sparse_storage *info,
23 				 lbaint_t blk,
24 				 lbaint_t blkcnt);
25 
26 	void		(*mssg)(const char *str, char *response);
27 };
28 
is_sparse_image(void * buf)29 static inline int is_sparse_image(void *buf)
30 {
31 	sparse_header_t *s_header = (sparse_header_t *)buf;
32 
33 	if ((le32_to_cpu(s_header->magic) == SPARSE_HEADER_MAGIC) &&
34 	    (le16_to_cpu(s_header->major_version) == 1))
35 		return 1;
36 
37 	return 0;
38 }
39 
40 int write_sparse_image(struct sparse_storage *info, const char *part_name,
41 		       void *data, char *response);
42