include/image-sparse.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Copyright 2014 Broadcom Corporation.
   4  */
   5
   6 #include <compiler.h>
   7 #include <part.h>
   8 #include <sparse_format.h>
   9
  10 #define FASTBOOT_MAX_BLK_WRITE 16384
  11
  12 #define ROUNDUP(x, y)   (((x) + ((y) - 1)) & ~((y) - 1))
  13
  14 struct sparse_storage {
  15         lbaint_t        blksz;
  16         lbaint_t        start;
  17         lbaint_t        size;
  18         void            *priv;
  19
  20         lbaint_t        (*write)(struct sparse_storage *info,
  21                                  lbaint_t blk,
  22                                  lbaint_t blkcnt,
  23                                  const void *buffer);
  24
  25         lbaint_t        (*reserve)(struct sparse_storage *info,
  26                                  lbaint_t blk,
  27                                  lbaint_t blkcnt);
  28
  29         void            (*mssg)(const char *str, char *response);
  30 };
  31
  32 static inline int is_sparse_image(void *buf)
  33 {
  34         sparse_header_t *s_header = (sparse_header_t *)buf;
  35
  36         if ((le32_to_cpu(s_header->magic) == SPARSE_HEADER_MAGIC) &&
  37             (le16_to_cpu(s_header->major_version) == 1))
  38                 return 1;
  39
  40         return 0;
  41 }
  42
  43 int write_sparse_image(struct sparse_storage *info, const char *part_name,
  44                        void *data, char *response);