# erase NAND
nand erase.chip
# get MLO
tftp 0x81000000 MLO
# make 4 copies in the RAM
cp.b 0x81000000 0x81020000 20000
cp.b 0x81000000 0x81040000 20000
cp.b 0x81000000 0x81060000 20000
# get u-boot.img
tftp 0x81080000 u-boot.img
# write the whole block (4*MLO + u-boot.img) to NAND
nand write 0x81000000 0x0 0x260000