1altbootcmd=run ${subbootcmds} 2bootcmd=run ${subbootcmds} 3configure=km_setboardid && saveenv && reset 4subbootcmds=tftpfdt tftpkernel nfsargs add_default boot 5nfsargs=setenv bootargs root=/dev/nfs rw nfsroot=${serverip}:/opt/eldk/${arch} 6tftpkernel=tftpboot ${load_addr_r} ${hostname}/uImage 7rootfssize=0 8