U-Boot > printenv
bootdelay=3
baudrate=115200
ethaddr=00:0e:99:03:13:28
nfshost=192.168.1.100
rootpath=/home/roger/workdir/filesys
serverip=192.168.1.100
bootfile=uImage
bootcmd=tftp;bootm
bootargs=console=ttyS2,115200n8 noinitrd rw ip=192.168.1.60 root=/dev/nfs nfsroo
t=192.168.1.100:/home/roger/workdir/filesys,nolock mem=32M
stdin=serial
stdout=serial
stderr=serial
ver=U-Boot 2009.11 (May 03 2010 - 15:39:24)
ipaddr=192.168.1.60

U-Boot > ping 192.168.1.100
Using  device
host 192.168.1.100 is alive
U-Boot > ping 192.168.1.70
Using  device
host 192.168.1.70 is alive
xp 虚拟机 互ping通畅，而且均无法ping通目标板。

U-Boot > boot
Using  device
TFTP from server 192.168.1.100; our IP address is 192.168.1.60
Filename 'uImage'.
Load address: 0xc0700000
Loading: *
TFTP error: 'File not found' (1)
Starting again

Using  device
TFTP from server 192.168.1.100; our IP address is 192.168.1.60
Filename 'uImage'.
Load address: 0xc0700000
Loading: T T T T T T T T T T T T T T T T T T T T
Retry count exceeded; starting again

Using  device
TFTP from server 192.168.1.100; our IP address is 192.168.1.60
Filename 'uImage'.
Load address: 0xc0700000
Loading: *
TFTP error: 'File not found' (1)
Starting again

Using  device
TFTP from server 192.168.1.100; our IP address is 192.168.1.60
Filename 'uImage'.
Load address: 0xc0700000
Loading: T T T
Abort
Wrong Image Format for bootm command
ERROR: can't get kernel image!