84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
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/*
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* Copyright (c) 2008, Google Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef __DEV_FLASH_H
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#define __DEV_FLASH_H
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#include <lib/ptable.h>
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enum nand_ecc_width
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{
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NAND_WITH_4_BIT_ECC,
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NAND_WITH_8_BIT_ECC,
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};
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struct flash_info {
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unsigned id;
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unsigned type;
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unsigned vendor;
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unsigned device;
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unsigned page_size;
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unsigned block_size;
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unsigned spare_size;
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unsigned num_blocks;
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enum nand_ecc_width ecc_width;
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unsigned num_pages_per_blk;
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unsigned num_pages_per_blk_mask;
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unsigned widebus;
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unsigned density;
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unsigned cw_size;
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unsigned cws_per_page;
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unsigned bad_blk_loc;
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unsigned blksize;
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unsigned dev_cfg;
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};
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void flash_init(void);
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struct ptable *flash_get_ptable(void);
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void flash_set_ptable(struct ptable *ptable);
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struct flash_info *flash_get_info(void);
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/* flash operations */
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int flash_erase(struct ptentry *ptn);
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int flash_read_ext(struct ptentry *ptn, unsigned extra_per_page,
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unsigned offset, void *data, unsigned bytes);
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int flash_write(struct ptentry *ptn, unsigned write_extra_bytes, const void *data,
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unsigned bytes);
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static inline int flash_read(struct ptentry *ptn, unsigned offset, void *data,
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unsigned bytes)
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{
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return flash_read_ext(ptn, 0, offset, data, bytes);
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}
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unsigned flash_page_size(void);
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int flash_ecc_bch_enabled(void);
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#endif /* __DEV_FLASH_H */
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