固化jffs2
U-Boot$ tftp 80008000 safe.crmafs
U-boot$ nand erase clean 0x00600000 $(filesize)
U-Boot$ nand write.jffs2 0x80008000 0x00600000 $(filesize)
setenv bootargs root=/dev/mtdblock3 ro console=ttyS0,115200 mem=64M rootfstype=jffs2
使用cramfs作为备份文件系统：
[root@localhost zlg]# mkcramfs rootfs_safe safefs.cramfs
固化jffs2
U-Boot$ tftp 80008000 safe.crmafs
U-boot$ nand erase clean 0x00600000 $(filesize)
U-Boot$ nand write.jffs2 0x80008000 0x00600000 $(filesize)
setenv bootargs root=/dev/mtdblock3 ro console=ttyS0,115200 mem=64M rootfstype=jffs2
使用cramfs作为备份文件系统：
[root@localhost zlg]# mkcramfs rootfs_safe safefs.cramfs
固化cramfs
U-Boot$ tftp 80008000 rootfs_safe.jffs2
U-boot$ nand erase clean 0x00600000 $(filesize)
U-Boot$ nand write.jffs2 0x80008000 0x00600000 $(filesize)
setenv bootargs root=/dev/mtdblock3 ro console=ttyS0,115200 mem=64M rootfstype=cramfs
