I have a Mochabin with Ubuntu. I'm trying to figure out how to install OpenWrt. I'm not familiar with tftp/tftpboot. The instructions are a bit difficult for me. This is the first step:
Copy dtb from build_dir to bin/ and run tftpserver there:
$ cp ./build_dir/target-aarch64_cortex-a72_musl/linux-mvebu_cortexa72/image-armada-7040-mochabin.dtb bin/targets/mvebu/cortexa72/
$ in.tftpd -L -s bin/targets/mvebu/cortexa72/