include/image-sparse.h

   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 typedef struct sparse_storage {
  13         unsigned int    block_sz;
  14         unsigned int    start;
  15         unsigned int    size;
  16         const char      *name;
  17
  18         int     (*write)(struct sparse_storage *storage, void *priv,
  19                          unsigned int offset, unsigned int size,
  20                          char *data);
  21 } sparse_storage_t;
  22
  23 static inline int is_sparse_image(void *buf)
  24 {
  25         sparse_header_t *s_header = (sparse_header_t *)buf;
  26
  27         if ((le32_to_cpu(s_header->magic) == SPARSE_HEADER_MAGIC) &&
  28             (le16_to_cpu(s_header->major_version) == 1))
  29                 return 1;
  30
  31         return 0;
  32 }
  33
  34 int store_sparse_image(sparse_storage_t *storage, void *storage_priv,
  35                        unsigned int session_id, void *data);