openwrtv4/package/system/mtd/src/mtd.h
Felix Fietkau 608f4fe3b0 mtd: add support for bad blocks in NAND flash
NAND flash is very likely to contain bad blocks.

Currently, mtd and therefore sysupgrade fails when it encounters a single bad block, potentially leaving an unbootable system.

This patch allows the mtd utility to skip bad blocks in NAND flash and complete sysupgrade successfully.

Patch by: Matthew Redfearn <matt.redfearn@nxp.com>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 40021
2014-03-26 10:50:09 +00:00

30 lines
1.1 KiB
C

#ifndef __mtd_h
#define __mtd_h
#include <stdbool.h>
#ifdef target_brcm47xx
#define target_brcm 1
#endif
#define JFFS2_EOF "\xde\xad\xc0\xde"
extern int quiet;
extern int mtdsize;
extern int erasesize;
extern int mtd_open(const char *mtd, bool block);
extern int mtd_check_open(const char *mtd);
extern int mtd_block_is_bad(int fd, int offset);
extern int mtd_erase_block(int fd, int offset);
extern int mtd_write_buffer(int fd, const char *buf, int offset, int length);
extern int mtd_write_jffs2(const char *mtd, const char *filename, const char *dir);
extern int mtd_replace_jffs2(const char *mtd, int fd, int ofs, const char *filename);
extern void mtd_parse_jffs2data(const char *buf, const char *dir);
/* target specific functions */
extern int trx_fixup(int fd, const char *name) __attribute__ ((weak));
extern int trx_check(int imagefd, const char *mtd, char *buf, int *len) __attribute__ ((weak));
extern int mtd_fixtrx(const char *mtd, size_t offset) __attribute__ ((weak));
extern int mtd_fixseama(const char *mtd, size_t offset) __attribute__ ((weak));
#endif /* __mtd_h */