搭建NFS系统

主要需要这些文件：

#sudo apt-get install xinetd tftpd
nfs-kernel-server minicom build-essential libncurses5-dev uboot-mkimage
autoconf automake

1)        安装完后，需要修改/etc/exports文件

#gedit /etc/exports

增加nfs文件目录

/home/qiuweibo/tftproot/rootfs-nfs *(rw,nohide,insecure,no_subtree_check,async,no_root_squash)

2)        #/etc/init.d/nfs-kernel-server restart   //重启NFS服务

到这里只能说PC端的NFS server搭建好了

uboot环境变量

//正常Uboot中nand启动命令
PRINT:
nandboot=echo Booting from nand ...; run nandargs; nand read ${loadaddr} ${nandsrcaddr} ${nandimgsize}; bootm ${loadaddr}
nandargs=setenv bootargs console=${console} ${optargs} root=${nandroot} rootfstype=${nandrootfstype}
SET:
//NFS命令如下
SET:
setenv nandargs setenv bootargs console=${console} ${optargs} root=/dev/nfs nfsroot=172.18.50.235:/home/qiuweibo/tftproot/rootfs-nfs ip=172.18.48.95:172.18.50.235:172.18.51.254:255.255.252.0::eth0:off

U-Boot# print ethaddr                          <-- Check if MAC address is assigned and is unique
U-Boot# setenv ethaddr     <-- Set only if not present already, format uv:yy:zz:aa:bb:cc
U-Boot# setenv serverip 
U-Boot# setenv rootpath /location/of/nfsroot/export
U-Boot# setenv bootcmd net_boot