setenv fdt_high ffffffff
setenv bootargs console=ttyS0,115200 earlyprintk root=/dev/mmcblk0p1 rootwait
ext4load mmc 0:1 $kernel_addr_r boot/kernel
ext4load mmc 0:1 $fdt_addr_r boot/sun8i-h2-plus-orangepi-zero.dtb
bootz $kernel_addr_r - $fdt_addr_r