210支持nfs作为根文件系统启动

1、配置网络部分，主要是使能CONFIG_IP_PNP以在2中能够看到Root file system on NFS选项

Networking support

Networking options

TCP/IP networking

IP: kernel level autoconfiguration

[*] IP: DHCP support

[*] IP: BOOTP support

2、配置开启nfs服务

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中设置如下启动参数（IP根据实际使用更改）

setenv bootargs root=/dev/nfs nfsroot=192.168.1.141:/root/porting_x210/rootfs ip=192.168.1.10:192.168.1.141:192.168.1.1:255.255.255.0::eth0:off init=/linuxrc console=ttySAC2,115200

转自朱老师物联网大讲堂