mtd-abi.h->eccpos[32] //32->64

yaffs_guts.c

eraseall /dev/mtd2

mount .../mtdblock2

tftp -r flash_erase -g 192.168.1.xxx

82000000 2G

200000000 4 X -----> 8G

home->tar->xuf->cp->sh(nand)

home->cp->sh

规避方法，识别

id,ro/rw 时序不稳？yaffs格式？