package/boot/uboot-sunxi/uEnv-default.txt

   1 setenv fdt_high ffffffff
   2 setenv loadkernel fatload mmc 0 \$kernel_addr_r uImage
   3 setenv loaddtb fatload mmc 0 \$fdt_addr_r dtb
   4 setenv bootargs console=ttyS0,115200 earlyprintk root=/dev/mmcblk0p2 rootwait
   5 setenv uenvcmd run loadkernel \&\& run loaddtb \&\& bootm \$kernel_addr_r - \$fdt_addr_r
   6 run uenvcmd