bootargs 环境变量无法用saveenv命令存储问题

yiyizhao · 发表于 2020-6-1 13:45:36

修改并存储 bootargs 环境变量，如下命令
=> setenv bootargs 'console=ttymxc0,115200 root=/dev/nfs rw nfsroot=192.168.124.4:/home/zyy/linux/nfs/rootfs ip=192.168.124.2:192.168.124.4:192.168.124.1:255.255.255.0::eth0ff'
=> saveenv
Saving Environment to MMC...
Writing to MMC(0)... done
不重启用print查看环境变量bootargs，如下所示，看起来是在RAM中修改成功了
bootargs=console=ttymxc0,115200 root=/dev/nfs rw nfsroot=192.168.124.4:/home/zyy/linux/nfs/rootfs ip=192.168.124.2:192.168.124.4:192.168.124.1:255.255.255.0::eth0ff

重启后用print查看环境变量bootargs就变化了，如下所示，似乎saveenv没有起作用，不知什么原因？
bootargs=console=ttymxc0,115200 root=/dev/nfs ip=dhcp nfsroot=192.168.124.4:,v3,tcp

yiyizhao · 发表于 2020-6-1 13:45:37

问题解决了，需要把netargs干掉
=> setenv netargs
=> saveenv

干掉netargs后，用以下命令就一劳永逸了
=> setenv bootargs 'console=ttymxc0,115200 root=/dev/nfs rw nfsroot=192.168.124.4:/home/zyy/linux/nfs/rootfs ip=192.168.124.2:192.168.124.4:192.168.124.1:255.255.255.0::eth0

ff'
=> saveenv
Saving Environment to MMC...
Writing to MMC(0)... done