uboot启动参数
bootcmd=nand read.jffs2 0x30007FC0 kernel; bootm 0x30007FC0
bootdelay=2
baudrate=115200
ethaddr=08:00:3e:26:0a:5b
ipaddr=192.168.7.17
serverip=192.168.7.11
netmask=255.255.255.0
mtdids=nand0=nandflash0
mtdparts=mtdparts=nandflash0:256k@0(bootloader),128k(params),2m(kernel),-(root)
bootargs=noinitrd console=ttySAC0 root=/dev/mtdblock3 rootfstype=yaffs
stdin=serial
stdout=serial
stderr=serial
partition=nand0,0
mtddevnum=0
mtddevname=bootloader
Environment size: 446/131068 bytes