bootargs=root=/dev/nfs rw nfsroot=192.168.0.1:/export/rfs ip=192.168.0.20
bootcmd=tftp 0x48080000 Image; tftp 0x48000000 Image-r8a77950-ulcb.dtb; booti 0x48080000 - 0x48000000
bootdelay=2
baudrate=115200
loadaddr=0x58000000
usb_pgood_delay=2000
bootm_size=0x10000000