Reset your board it should now boot from the network: In simple terms, the TFTP server is a depicted protocol that functions on user Datagram Protocol. Now finally save those variable in u-boot: Now, set environment variable bootcmd to boot every time from the network, $ cp = try then bootz else echo WARN: Cannot load the DT fi fi else bootz fi Then, copy the kernel image and the device tree blob file in this directory. Now, we have to create the directory which will contain the kernel image and the device tree blob file. To check the status of the TFTP service from the command line use: Now, To control the TFTP service from the command line use: Now, just before the exit 0 line edit below command then Save and Exit. Start the tftpd-hpa service automatically by adding a command to /etc/rc.local. (Note: There are a number of examples in various forums, etc, of how to automatically start the TFTP service - but not all are successful on all Linux distro's it seems! The following may work for you.) Get the required software if not already set up. Now configure the Trivial File Transfer Protocol (TFTP) server and Networked File System (NFS) server. U-Boot will download the Linux kernel and dtb file using tftp and then the kernel will mount (via NFS) its root file system on the computer hard drive.
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