blob: b6eb223fb6f3c34786e7f9af7415d14e41476656 [file] [log] [blame]
* (C) Copyright 2005
* 2N Telekomunikace, a.s. <>
* Ladislav Michl <>
* SPDX-License-Identifier: GPL-2.0
#ifndef _NAND_H_
#define _NAND_H_
#include <config.h>
* All boards using a given driver must convert to self-init
* at the same time, so do it here. When all drivers are
* converted, this will go away.
#if defined(CONFIG_NAND_FSL_ELBC) || defined(CONFIG_NAND_ATMEL)\
extern void nand_init(void);
#include <linux/compat.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
int nand_mtd_to_devnum(struct mtd_info *mtd);
void board_nand_init(void);
int nand_register(int devnum, struct mtd_info *mtd);
extern int board_nand_init(struct nand_chip *nand);
extern int nand_curr_device;
extern struct mtd_info *nand_info[];
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;
instr.callback = 0;
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);
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);
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);
void board_nand_select_device(struct nand_chip *nand, int chip);
__attribute__((noreturn)) void nand_boot(void);
#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 */
int get_nand_env_oob(struct mtd_info *mtd, unsigned long *result);
int spl_nand_erase_one(int block, int page);
/* platform specific init functions */
void sunxi_nand_init(void);