label buildroot kernel /zImage devicetree /bcm2835-rpi-b-plus.dtb # devicetree /bcm2835-rpi-zero-w.dtb devicetree-overlay /ssd1306.dtbo append root=/dev/mmcblk0p2 rootwait console=tty1 console=ttyAMA0,115200 # In Raspberry Pi Zero W, the mini-uart is used for console instead of the PL011: # append root=/dev/mmcblk0p2 rootwait console=tty1 console=ttyS1,115200