1*4882a593Smuzhiyunlabel RK3399_ROCK_PI_4 linux 2*4882a593Smuzhiyun kernel /Image 3*4882a593Smuzhiyun devicetree /rk3399-rock-pi-4.dtb 4*4882a593Smuzhiyun append earlycon=uart8250,mmio32,0xff1a0000 root=/dev/mmcblk1p4 rw rootwait 5