[U-Boot] auto update from NAND flash

Hi all,

I have a MPC8572 PowerPC board , with jffs2 filesystem on the NAND falsh. I have formatted the falsh in 5 partitions for dtb, uboot.bin, uImage, rootfs.jffs2 and a spare parttion.

I want to do a auto update for the uImage and rootfs.jffs2 by using he spare aparttion in the flash. i.e. I will place the latest uImage/ root.jffs2 file in the spare parttion and while reboot the uboot should flash the latest images and boot

I know there is auto update through tftp , any idea throug h NAND falsh.

Thanks.