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/* SPDX-License-Identifier: GPL-2.0 */
/*
* (C) Copyright 2005
* 2N Telekomunikace, a.s. <www.2n.cz>
* Ladislav Michl <michl@2n.cz>
*/
#ifndef _NAND_H_
#define _NAND_H_
extern void nand_init(void);
void nand_reinit(void);
unsigned long nand_size(void);
unsigned int nand_page_size(void);
#include <linux/compat.h>
#include <linux/mtd/mtd.h>
int nand_mtd_to_devnum(struct mtd_info *mtd);
#if CONFIG_IS_ENABLED(SYS_NAND_SELF_INIT)
void board_nand_init(void);
int nand_register(int devnum, struct mtd_info *mtd);
void nand_unregister(struct mtd_info *mtd);
#else
struct nand_chip;
extern int board_nand_init(struct nand_chip *nand);
#endif
extern int nand_curr_device;
static inline int nand_read(struct mtd_info *info, loff_t ofs, size_t *len,
u_char *buf)
{
return mtd_read(info, ofs, *len, (size_t *)len, buf);
}
static inline int nand_write(struct mtd_info *info, loff_t ofs, size_t *len,
u_char *buf)
{
return mtd_write(info, ofs, *len, (size_t *)len, buf);
}
static inline int nand_block_isbad(struct mtd_info *info, loff_t ofs)
{
return mtd_block_isbad(info, ofs);
}
static inline int nand_erase(struct mtd_info *info, loff_t off, size_t size)
{
struct erase_info instr;
instr.mtd = info;
instr.addr = off;
instr.len = size;
return mtd_erase(info, &instr);
}
/*****************************************************************************
* declarations from nand_util.c
****************************************************************************/
typedef struct mtd_oob_ops mtd_oob_ops_t;
struct nand_erase_options {
loff_t length; /* number of bytes to erase */
loff_t offset; /* first address in NAND to erase */
int quiet; /* don't display progress messages */
int jffs2; /* if true: format for jffs2 usage
* (write appropriate cleanmarker blocks) */
int scrub; /* if true, really clean NAND by erasing
* bad blocks (UNSAFE) */
/* Don't include skipped bad blocks in size to be erased */
int spread;
/* maximum size that actual may be in order to not exceed the buf */
loff_t lim;
};
typedef struct nand_erase_options nand_erase_options_t;
int nand_read_skip_bad(struct mtd_info *mtd, loff_t offset, size_t *length,
size_t *actual, loff_t lim, u_char *buffer);
#define WITH_DROP_FFS (1 << 0) /* drop trailing all-0xff pages */
#define WITH_WR_VERIFY (1 << 1) /* verify data was written correctly */
int nand_write_skip_bad(struct mtd_info *mtd, loff_t offset, size_t *length,
size_t *actual, loff_t lim, u_char *buffer, int flags);
int nand_erase_opts(struct mtd_info *mtd,
const nand_erase_options_t *opts);
int nand_torture(struct mtd_info *mtd, loff_t offset);
int nand_verify_page_oob(struct mtd_info *mtd, struct mtd_oob_ops *ops,
loff_t ofs);
int nand_verify(struct mtd_info *mtd, loff_t ofs, size_t len, u_char *buf);
#define NAND_LOCK_STATUS_TIGHT 0x01
#define NAND_LOCK_STATUS_UNLOCK 0x04
int nand_lock(struct mtd_info *mtd, int tight);
int nand_unlock(struct mtd_info *mtd, loff_t start, size_t length,
int allexcept);
int nand_get_lock_status(struct mtd_info *mtd, loff_t offset);
u32 nand_spl_adjust_offset(u32 sector, u32 offs);
int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst);
int nand_spl_read_block(int block, int offset, int len, void *dst);
void nand_deselect(void);
#ifdef CONFIG_SYS_NAND_SELECT_DEVICE
void board_nand_select_device(struct nand_chip *nand, int chip);
#endif
__attribute__((noreturn)) void nand_boot(void);
#ifdef CONFIG_ENV_OFFSET_OOB
#define ENV_OOB_MARKER 0x30425645 /*"EVB0" in little-endian -- offset is stored
as block number*/
#define ENV_OOB_MARKER_OLD 0x30564e45 /*"ENV0" in little-endian -- offset is
stored as byte number */
#define ENV_OFFSET_SIZE 8
int get_nand_env_oob(struct mtd_info *mtd, unsigned long *result);
#endif
int spl_nand_erase_one(int block, int page);
/* platform specific init functions */
void sunxi_nand_init(void);
/*
* get_nand_dev_by_index - Get the nand info based in index.
*
* @dev - index to the nand device.
*
* returns pointer to the nand device info structure or NULL on failure.
*/
struct mtd_info *get_nand_dev_by_index(int dev);
#endif /* _NAND_H_ */
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