Minimal 64bit ARM RootFS for Debian and Ubuntu

[patrickhwood]

How did you build the android kernel?

I didn't build it; I pulled the android boot image from partition 6 and used abootimg to replace the ramdisk with one containing busybox and this in /init:

Code:

#!/bin/sh +x
# mount local virtual fs
mount -t proc proc /proc
mount -t devtmpfs dev /dev

mount /dev/mmcblk0p1 /root

# mount /dev in new rootfs, cause we'll need one
mount -t devtmpfs dev /root/dev

exec chroot /root /sbin/init

I supposed I could have modified uboot's environment or script.bin to change the root= setting in the kernel's args, but that would have entailed mucking around with allwinner's uboot, and I'd prefer to spend my time elsewhere.