U-Boot > mtdparts

device nand0 <nand>, # parts = 2
 #: name			size			offset		mask_flags
 0: rootfs			0x08000000		0x00000000	0
 1: userfs			0x08000000		0x08000000	0

active partition: nand0, 0 - (rootfs) 0x08000000 @ 0x00000000

defaults:
mtdids  : none
mtdparts: none
U-Boot> mw.b 0xC2000000 0xFF 0x06000000
U-Boot> tftp 0xC2000000  myserver:/path/to/root_filesystem.jffs2 
*** ERROR:  'ipaddr' not set
U-Boot >