View source for 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:
<pre class="apf">
# mkdir /buildroot
</pre>
* Uncompress it your Buildroot rootfs:
<pre class="apf">
# tar xvf apf6-rootfs.tar -C /buildroot/
</pre>
* Create a script that will launch buildroot init at start instead of Debian one:
<pre class="apf">
# vim /br_init
</pre>
* Put it in:
<pre class="apf">
#!/bin/sh
mount -t proc none /buildroot/proc
mount -t sysfs none /buildroot/sys
exec chroot /buildroot /sbin/init
</pre>
* Give it executable rights
<pre class="apf">
# chmod 755 /br_init
</pre>

==Usage==
* In U-Boot create a script to start your Buildroot rootfs:
<pre class="apf">
BIOS> setenv brboot 'setenv mmcdev 0; setenv mmcpart 1; setenv mmcdir; setenv mmcroot /dev/mmcblk2p2 rw; setenv extrabootargs init=/br_init; run genmmcboot;'
</pre>
* Launch it:
<pre class="apf">
BIOS> saveenv
BIOS> run brboot
</pre>
* Tada !

==Links==
* [[Debian_on_APF]]