U-BOOT boot.txt for booting RaspberryPi kernel on ArchLinxuARM aarch64

boot.txt

# After modifying, run ./mkscr
# Set root partition to the second partition of boot device
part uuid ${devtype} ${devnum}:2 uuid

setenv bootargs console=tty1 root=PARTUUID=${uuid} rw rootwait smsc95xx.macaddr="${usbethaddr}"

load ${devtype} ${devnum}:${bootpart} ${kernel_addr_r} /Image
load ${devtype} ${devnum}:${bootpart} ${ramdisk_addr_r} /initramfs-linux.img
booti ${kernel_addr_r} ${ramdisk_addr_r}:${filesize} ${fdtcontroladdr};

explanation.md

Put this file in /boot/boot.txt and then go to /boot and run ./mkscr. Of course, make sure you actually have the RaspberryPi kernel installed before doing so.

Some RPi kernel packages on ArchLinuxARM installs directly to /boot/kernel8.img. In this case, you'll need to remove U-BOOT entirely and boot directly to the Linux kernel instead.

This configuration file is ONLY intended for my linux-lts-aarch64-raspberrypi-git package.

It is also recommended to add

device_tree=dtbs/broadcom/bcm2710-rpi-3-b.dtb

to your /boot/config.txt to make sure the DTB that comes with the kernel is always loaded.

To load other overlays (e.g. the GPU driver), add

overlay_prefix=dtbs/overlays/
dtoverlay=vc4-kms-v3d