mirror of
https://github.com/smaeul/u-boot.git
synced 2025-10-17 14:18:14 +01:00
38ef64e6ce
Since commit 34793598c83 ("mtd: nand: mxs_nand_spl: Remove the page aligned
access") there are no longer any users of nand_get_mtd. However, it is
still important to know what the page size is so we can allocate a
large-enough buffer. If the image size is not page-aligned, we will go off
the end of the buffer and clobber some memory.
Introduce a new function nand_page_size which returns the page size. For
most drivers it is easy to determine the page size. However, a few need to
be modified since they only keep the page size around temporarily.
It's possible that this patch could cause a regression on some platforms if
the offset is non-aligned and there is invalid address space immediately
before the load address. spl_load_legacy_img does not (except when
compressing) respect bl_len, so only boards with SPL_LOAD_FIT (8 boards) or
SPL_LOAD_IMX_CONTAINER (none in tree) would be affected.
defconfig CONFIG_TEXT_BASE
======================= ================
am335x_evm 0x80800000
am43xx_evm 0x80800000
am43xx_evm_rtconly 0x80800000
am43xx_evm_usbhost_boot 0x80800000
am43xx_hs_evm 0x80800000
dra7xx_evm 0x80800000
gwventana_nand 0x17800000
imx8mn_bsh_smm_s2 0x40200000
All the sitara boards have DDR mapped at 0x80000000. gwventana is an i.MX6Q
which has DDR at 0x10000000. I don't have the IMX8MNRM handy, but on the
i.MX8M DDR starts at 0x40000000. Therefore all of these boards can handle a
little underflow.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
142 lines
4.0 KiB
C
142 lines
4.0 KiB
C
/* 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_
|
|
|
|
#include <config.h>
|
|
|
|
extern void nand_init(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);
|
|
#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_ */
|