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2c72404687
In order to process the CHUNK_TYPE_DONT_CARE properly, there is a requirement to be able to 'reserve' a specified number of blocks in the storage media. Because of the special handling of "bad blocks" in NAND devices, this is implemented in a storage abstraction function. Signed-off-by: Steve Rae <srae@broadcom.com> Reviewed-by: Maxime Ripard <maxime.ripard@free-electrons.com>
41 lines
836 B
C
41 lines
836 B
C
/*
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* Copyright 2014 Broadcom Corporation.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <part.h>
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#include <sparse_format.h>
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#define ROUNDUP(x, y) (((x) + ((y) - 1)) & ~((y) - 1))
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struct sparse_storage {
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lbaint_t blksz;
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lbaint_t start;
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lbaint_t size;
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void *priv;
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lbaint_t (*write)(struct sparse_storage *info,
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lbaint_t blk,
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lbaint_t blkcnt,
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const void *buffer);
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lbaint_t (*reserve)(struct sparse_storage *info,
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lbaint_t blk,
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lbaint_t blkcnt);
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};
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static inline int is_sparse_image(void *buf)
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{
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sparse_header_t *s_header = (sparse_header_t *)buf;
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if ((le32_to_cpu(s_header->magic) == SPARSE_HEADER_MAGIC) &&
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(le16_to_cpu(s_header->major_version) == 1))
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return 1;
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return 0;
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}
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void write_sparse_image(struct sparse_storage *info, const char *part_name,
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void *data, unsigned sz);
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