bootcmd=setenv bootargs $(bootargs) $(bootargs_common); mmc read 0 0x1000000 0x3D5000 0x8000; bootm 0x1000000; run bootcmd_fallback
bootargs=root=/dev/mmcblk0p23 rootsubdir=linuxrootfs4 rootfstype=ext4 kernel=/dev/mmcblk0p22
