hisilicon # print
arch=arm
baudrate=115200
board=hi3516dv300
board_name=hi3516dv300
bootargs=mem=640M console=ttyAMA0,115200 mmz=anonymous,0,0xA8000000,384M clk_ignore_unused androidboot.selinux=permissive skip_initramfs rootdelay=10 init=/init root=/dev/mmcblk0p5 rootfstype=ext4 rw blkdevparts=mmcblk0:1M(boot),15M(kernel),20M(updater),1M(misc),3307M(system),256M(vendor),-(userdata)
bootcmd=mmc read 0x0 0x80000000 0x800 0x4800; bootm 0x80000000
bootdelay=2
cpu=armv7
ethact=eth0
soc=hi3516dv300
stderr=serial
stdin=serial
stdout=serial
vendor=hisilicon
verify=n

Environment size: 549/262140 bytes

DOPI还没用过，看看大佬怎么玩的