M7350/bootable/bootloader/lk/include/dev/flash.h

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2024-09-09 08:52:07 +00:00
/*
* Copyright (c) 2008, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef __DEV_FLASH_H
#define __DEV_FLASH_H
#include <lib/ptable.h>
enum nand_ecc_width
{
NAND_WITH_4_BIT_ECC,
NAND_WITH_8_BIT_ECC,
};
struct flash_info {
unsigned id;
unsigned type;
unsigned vendor;
unsigned device;
unsigned page_size;
unsigned block_size;
unsigned spare_size;
unsigned num_blocks;
enum nand_ecc_width ecc_width;
unsigned num_pages_per_blk;
unsigned num_pages_per_blk_mask;
unsigned widebus;
unsigned density;
unsigned cw_size;
unsigned cws_per_page;
unsigned bad_blk_loc;
unsigned blksize;
unsigned dev_cfg;
};
void flash_init(void);
struct ptable *flash_get_ptable(void);
void flash_set_ptable(struct ptable *ptable);
struct flash_info *flash_get_info(void);
/* flash operations */
int flash_erase(struct ptentry *ptn);
int flash_read_ext(struct ptentry *ptn, unsigned extra_per_page,
unsigned offset, void *data, unsigned bytes);
int flash_write(struct ptentry *ptn, unsigned write_extra_bytes, const void *data,
unsigned bytes);
static inline int flash_read(struct ptentry *ptn, unsigned offset, void *data,
unsigned bytes)
{
return flash_read_ext(ptn, 0, offset, data, bytes);
}
unsigned flash_page_size(void);
int flash_ecc_bch_enabled(void);
#endif /* __DEV_FLASH_H */