Difference between revisions of "Linux Kernel for CM-X300"

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== Overview ==
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#REDIRECT [[CM-X300: Linux: Kernel]]
 
 
Linux kernel for CM-X300 modules provides support for on-board peripherals. Current support coverage is specified at [http://www.compulab.co.il/x300cm/html/x300-os-support.htm O/S support coverage map] page. CompuLab provides ready-to-run binary kernel images, and source code of the modifications and additions made to the Linux kernel to work properly with CM-X300 modules.
 
 
 
== Building Linux kernel for CM-X300 ==
 
 
 
<pre>
 
mkdir /home/development/cm-x300/kernel
 
cd /home/development/cm-x300/kernel
 
wget http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.26.tar.bz2
 
tar xjf linux-2.6.26.tar.bz2
 
cd linux-2.6.26
 
cat /path/to/x300-linux/kernel/linux-2.6.26-cm-x300.patch | patch -p1
 
export ARCH=arm
 
export CROSS_COMPILE=arm-linux-
 
make cm_x300_defconfig
 
make menuconfig
 
make && make uImage \
 
    INSTALL_MOD_PATH=/home/development/cm-x300/rootfs make modules_install
 
</pre>
 
 
 
In the above example, the Linux kernel image ({{filename|uImage}}) will be created in {{filename|/home/development/cm-x300/kernel/linux-2.6.26/arch/arm/boot}}, and the loadable kernel modules will be installed into the {{filename|/home/development/cm-x300/rootfs/lib/modules}} directory.
 
 
 
Now, if you boot CM-X300 with newly created kernel image and with networked root filesysem at {{filename|/home/development/cm-x300/rootfs/}} the system will be able to properly load kernel modules and you avoid modules versioning problems.
 
 
 
=== Creating Linux kernel JFFS2 image===
 
 
 
The Linux kernel should be stored in the CM-X300 NAND flash as a JFFS2 image. This image can be created as follows:
 
 
 
<pre>
 
mkdir /tmp/cm-x300-kernel/
 
cp /home/development/cm-x300/kernel/linux-2.6.26/arch/arm/boot/uImage
 
mkfs.jffs2 --no-cleanmarkers --pad --eraseblock=0x20000 --root=/tmp/cm-x300-kernel --output=/path/to/cm-x300-kernel.jffs2
 
</pre>
 
 
 
== See also ==
 
 
 
* [[Getting started with Linux on CM-X300]]
 
* [[Linux Development for XScale modules]]
 
* [[Debian Linux for CM-X300]]
 

Latest revision as of 08:45, 23 December 2009