Debian Setup TFTP/NFS¶

Running Debian rootfs on Variscite board using TFTP & NFS¶

On the Host¶

Prepare the rootfs folder:

mkdir -p ~/rootfs_debian_nfs

cd ~/rootfs_debian_nfs

sudo tar -I unzstd -xvf /build_lsdk2412/images/rootfs_lsdk2412_debian_desktop_arm64.tar.zst -C ~/rootfs_debian_nfs

Make sure the NFS server is installed:

sudo apt install nfs-kernel-server

Edit /etc/exports. E.g.

sudo gedit /etc/exports

And add the following line to it (replace with the actual username):

/home/<uname>/rootfs_debian_nfs    *(rw,sync,no_root_squash,no_all_squash,no_subtree_check)

Restart the NFS server:

sudo /etc/init.d/nfs-kernel-server restart

Make sure the TFTP server is installed:

sudo apt install xinetd tftpd tftp

Verify the following:

ls /usr/sbin/in.tftpd

sudo gedit /etc/xinetd.d/tftp

service tftp
{
    protocol = udp
    port = 69
    socket_type = dgram
    wait = yes
    user = nobody
    server = /usr/sbin/in.tftpd
    server_args = /tftpboot
    disable = no
}

And run:

sudo mkdir /tftpboot

sudo chmod -R 777 /tftpboot

sudo /etc/init.d/xinetd restart

cd

sudo cp -a output/*.dtb /tftpboot

sudo cp output/Image.gz /tftpboot

On the Target¶

Make sure you have a serial connection to the target.

Boot the board and hit any key to stop the autoboot and get to the U-Boot command line.

=> setenv serverip <HOST_IP_ADDRESS> (replace <HOST_IP_ADDRESS> with the actual IP address of your host - run 'ifconfig' on the host to get it)

=> setenv nfsroot /home/<uname>/rootfs_debian_nfs (replace <uname> with the actual username)

=> setenv bootcmd run netboot

=> saveenv

You are all set. Connect the target board to the same network as the host using an Ethernet cable, power cycle it and it should boot over NFS.