Following is the procedure which will guide you for setting up the Linux PC as a tftp server and download the uboot, dts and ramdisk or filesystem using tftpboot at uboot console and then boot the target board.
You will need to make sure following setup:
- Ubuntu Linux PC in LAN
- Target board Uboot has Ethernet enabled.
- You can ping ubuntu PC IP from the uboot console.
On Ubuntu Linux
sudo apt-get install tftpd-hpa
sudo apt-get install tftp
sudo service tftpd-hpa start
Above steps will install tftp server, create directory /var/lib/tftpboot and start the tftp server, which you can check using below command,
$ ps -ax | grep tftp 8356 ? Ss 0:00 /usr/sbin/in.tftpd --listen --user tftp --address :69 --secure /var/lib/tftpboot
One we have setup, tftpserver now we will need to copy images which we want to flash on the target.
$ sudo cp -r /var/lib/tftpboot
On TARGET Board
$ setenv ipaddr
$ setenv netmask
$ etenv serverip
$ setenv dnsip
$ setenv gatewayip
$ saveenv
setenv kernel_addr "check for address"
setenv dtb_addr "check for addres"
setenv filesystemimage_addr "check for address"
tftpboot ${kernel_addr} tftpboot ${dtb_addr} tftpboot ${filesystemimage_addr} bootm ${kernel_addr} 