Buildroot inside Debian on APF

So you just installed Debian on your APF (Debian_on_APF) and still want to test Buildroot stuff without reformatting your disk or delete your installation ? Here is a small tutorial for you (tested on APF6 only).

Installation

• On your Debian rootfs, create a directory that will be used to store Buildroot rootfs:

# mkdir /buildroot

• Uncompress it your Buildroot rootfs:

# tar xvf apf6-rootfs.tar -C /buildroot/

• Create a script that will launch buildroot init at start instead of Debian one:

# vim /br_init

• Put it in:

#!/bin/sh
mount -t proc none /buildroot/proc
mount -t sysfs none /buildroot/sys
exec chroot /buildroot /sbin/init

• Give it executable rights

# chmod 755 /br_init

Usage

• In U-Boot create a script to start your Buildroot rootfs:

BIOS> setenv brboot 'setenv mmcdev 0; setenv mmcpart 1; setenv mmcdir; setenv mmcroot /dev/mmcblk2p2 rw; setenv extrabootargs init=/br_init; run genmmcboot;'

• Launch it:

BIOS> saveenv
BIOS> run brboot

• Tada !

Links

• Debian_on_APF