Comment 5 for bug 1805668

I don't agree with the alterations to u-boot either. Arm64 doesn't need to be called kernel8.img. The config.txt should be changed to tell the pi's bootloader to expect aarch64. That way you can keep the uboot.bin name and it is consistent between armhf and arm64.

This bug fails to address flash-kernel which is the major problem with the ubuntu setup. raspi3-firmware is not the answer - it is awful. What is required is a new package with simplified scripts that replaces Linux-firmware-raspi2. Making big changes to existing packages is very risky.

Before backporting any changes to bionic please be aware of how people are using Ubuntu - https://wiki.ubuntu.com/ARM/RaspberryPi . Different versions of u-boot could be used, requiring different FDT addresses. Or more likely, u-boot is not used at all. Previously updates to u-boot/flash-kernel/Linux-firmware-raspi2 have caused major problems (e.g. https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1652270 ). We definitely don't want some packages postinst script messing with config.txt.