Difference between revisions of "How to use kernel 2.6.38.x on APF27"

Revision as of 14:59, 15 February 2012

By default, the kernel for APF27 is the 2.6.29.6. Migration for 2.6.38.x is in progress but not finished, and some features like 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 :

$ git clone git://armadeus.git.sourceforge.net/gitroot/armadeus/armadeus apf27

Configure the view for APF27 :

$ make apf27_defconfig

On menuconfig select :

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

Then make :

$ make

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:

BIOS> setenv console console=ttymxc0,115200

• 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):

BIOS> setenv console console=ttymxc0,115200 video=imxfb:Chimei-LW700AT9003

Evolution of migration

The evolution of patches migration can be found on migration page.