linux內核支持nfs掛載配置

1、配置網絡部分，主要是使能CONFIG_IP_PNP以在2中能夠看到Root file system on NFS選項
Networking support
Networking options
TCP/IP networking
IP: kernel level autoconfiguration
[*] IP: DHCP support
[*] IP: BOOTP support

2、配置開啟nfs服務
File systems --->
Network File Systems --->
<*> NFS client support
[*] NFS client support for NFS version 3 [*] NFS client support for the NFSv3 ACL protocol extension
[*] NFS client support for NFS version 4 (EXPERIMENTAL)
[*] NFS client support for NFSv4.1 (DEVELOPER ONLY)
[*] Root file system on NFS

3、在uboot中設置如下啟動參數（IP根據實際使用更改）
setenv bootargs root=/dev/nfs nfsroot=192.168.1.105:/mnt/rootfs/rootfs ip=192.168.1.88:192.168.1.105:192.168.1.1:255.255.255.0::eth0:off init=/linuxrc console=ttySAC2,115200