nor flash 的简单操作命令

 

# cat /proc/mtd
dev:    size   erasesize  name
mtd0: 00500000 00001000 "boot"
mtd1: 00020000 00001000 "bootenv"
mtd2: 00a80000 00001000 "kernel"
mtd3: 00060000 00001000 "spare"


# mtd_debug --help
usage: mtd_debug info <device>
       mtd_debug read <device> <offset> <len> <dest-filename>
       mtd_debug write <device> <offset> <len> <source-filename>
       mtd_debug erase <device> <offset> <len>


# mtd_debug info /dev/mtd0
mtd.type = MTD_NORFLASH
mtd.flags = MTD_CAP_NORFLASH
mtd.size = 5242880 (5M)
mtd.erasesize = 4096 (4K)
mtd.writesize = 1 
mtd.oobsize = 0 
regions = 0

# flash_eraseall --help
flash_eraseall has been replaced by `flash_erase <mtddev> 0 0`; please use it
Usage: flash_erase [options] MTD_DEVICE <start offset> <block count>
Erase blocks of the specified MTD device.
Specify a count of 0 to erase to end of device.

  -j, --jffs2       format the device for jffs2
  -N, --noskipbad   don't skip bad blocks
  -u, --unlock      unlock sectors before erasing
  -q, --quiet       do not display progress messages
      --silent      same as --quiet
      --help        display this help and exit
      --version     output version information and exit


# flash_eraseall /dev/mtd0
flash_eraseall has been replaced by `flash_erase <mtddev> 0 0`; please use it
Erasing 4 Kibyte @ 0 -- -1 % complete 
Erasing 4 Kibyte @ 1000 -- -1 % complete 
Erasing 4 Kibyte @ 2000 -- -1 % complete 
Erasing 4 Kibyte @ 3000 -- -1 % complete 
Erasing 4 Kibyte @ 4000 -- -1 % complete
...
Erasing 4 Kibyte @ 64004ff000 -- -100 % complete 


# flashcp /BOOT.BIN /dev/mtd0

 

(完)