View source for How to use kernel 2.6.38.x on APF27

By default, the kernel for APF27 is the 2.6.29.6. Migration for 2.6.38.x [[APF9328_and_APF27_migration_to_Linux_2.6.38 | is in progress]] but not finished, and some features like [[Can | CAN]] or [[GPIOlib]] interrupts management are not available under kernel 2.6.29. This article explain how to use the 2.6.38.x kernel with latest armadeus trunk.

== Get the trunk version ==

Get the latest trunk version with command :
<pre class="host">
$ git clone git://armadeus.git.sourceforge.net/gitroot/armadeus/armadeus apf27
</pre>

Configure the view for APF27 :
<pre class="host">
$ make apf27_defconfig
</pre>

On menuconfig select :
<pre class="config">
Toolchain  --->
    Kernel Headers (Linux 2.6 (manually specified version))  --->
    (2.6.38.8) linux version
[...]
System configuration  --->
    (ttymxc0) Port to run a getty (login prompt) on
[...]
Kernel  --->
    (2.6.38.8) Kernel version
</pre>

Then make :
<pre class="host">
$ make
</pre>

== U-Boot modification ==

Serial port names have been unified to /dev/ttymxc[0-6]. So if you want to see something on your serial console please do the following before booting: 
<pre class="apf">
BIOS> setenv console console=ttymxc0,115200
</pre>

* Framebuffer can now support multiple LCDs and so LCD you want to use must be passed as bootparam (like serial port). So you can do (for example):
<pre class="apf">
BIOS> setenv console console=ttymxc0,115200 video=imxfb:Chimei-LW700AT9003
</pre>