/*
   * Copyright 2014 Broadcom Corporation.
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  
  #include <part.h>
  #include <sparse_format.h>
  
  #define ROUNDUP(x, y)	(((x) + ((y) - 1)) & ~((y) - 1))
  
  struct sparse_storage {
  	lbaint_t	blksz;
  	lbaint_t	start;
  	lbaint_t	size;
  	void		*priv;
  
  	lbaint_t	(*write)(struct sparse_storage *info,
  				 lbaint_t blk,
  				 lbaint_t blkcnt,
  				 const void *buffer);
  
  	lbaint_t	(*reserve)(struct sparse_storage *info,
  				 lbaint_t blk,
  				 lbaint_t blkcnt);
  };
  
  static inline int is_sparse_image(void *buf)
  {
  	sparse_header_t *s_header = (sparse_header_t *)buf;
  
  	if ((le32_to_cpu(s_header->magic) == SPARSE_HEADER_MAGIC) &&
  	    (le16_to_cpu(s_header->major_version) == 1))
  		return 1;
  
  	return 0;
  }
  
  void write_sparse_image(struct sparse_storage *info, const char *part_name,
  			void *data, unsigned sz);