#Normal Boot
initrd_high=0xffffffff
fdt_high=0xffffffff

kernel_file=zImage
initrd_file=initrd.img

console=ttyO0,115200n8

mmcroot=/dev/mmcblk0p5 ro
mmcrootfstype=ext4 rootwait fixrtc

loadkernel=load mmc ${mmcdev}:${mmcpart} 0x80300000 ${kernel_file}
loadinitrd=load mmc ${mmcdev}:${mmcpart} 0x81600000 ${initrd_file}; setenv initrd_size ${filesize}
loadfdt=load mmc ${mmcdev}:${mmcpart} 0x815f0000 /dtbs/${fdtfile}

boot_classic=run loadkernel; run loadinitrd
boot_fdt=run loadkernel; run loadinitrd; run loadfdt

video_args=setenv video VIDEO_DISPLAY
device_args=run video_args; run expansion_args; run mmcargs
mmcargs=setenv bootargs console=${console} ${optargs} ${video} root=${mmcroot} rootfstype=${mmcrootfstype} ${expansion}

expansion_args=setenv expansion
#Classic Board File Boot:
#uenvcmd=run boot_classic; run device_args; bootz 0x80300000 0x81600000:${initrd_size}
#New Device Tree Boot:
uenvcmd=run boot_fdt; run device_args; bootz 0x80300000 0x81600000:${initrd_size} 0x815f0000