serverip=192.168.1.75
bootscript_addr=0x01000000
bootscript_path=bootscript
-tboot=tftpboot ${bootscript_addr} ${serverip}:${bootscript_path} && source ${bootscript_addr}
-default_bootcmd=run tboot
+tboot=tftpboot ${bootscript_addr} ${serverip}:${bootscript_path} && source ${bootscript_addr}:bootscript@1
+default_bootcmd=dhcp; run tboot