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| − | == Overview ==
| + | #REDIRECT [[CM-X300: Linux: Kernel]] |
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| − | 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.
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| − | == Building Linux kernel for CM-X300 ==
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| − | <pre>
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| − | mkdir /home/development/cm-x300/kernel
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| − | cd /home/development/cm-x300/kernel
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| − | wget http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.26.tar.bz2
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| − | tar xjf linux-2.6.26.tar.bz2
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| − | cd linux-2.6.26
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| − | cat /path/to/x300-linux/kernel/linux-2.6.26-cm-x300.patch | patch -p1
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| − | export ARCH=arm
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| − | export CROSS_COMPILE=arm-linux-
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| − | make cm_x300_defconfig
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| − | make menuconfig
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| − | make && make uImage \
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| − | INSTALL_MOD_PATH=/home/development/cm-x300/rootfs make modules_install
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| − | </pre>
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| − | 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.
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| − | 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.
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| − | === Creating Linux kernel JFFS2 image===
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| − | The Linux kernel should be stored in the CM-X300 NAND flash as a JFFS2 image. This image can be created as follows:
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| − | <pre>
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| − | mkdir /tmp/cm-x300-kernel/
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| − | cp /home/development/cm-x300/kernel/linux-2.6.26/arch/arm/boot/uImage
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| − | mkfs.jffs2 --no-cleanmarkers --pad --eraseblock=0x20000 --root=/tmp/cm-x300-kernel --output=/path/to/cm-x300-kernel.jffs2
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| − | </pre>
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| − | == See also ==
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| − | * [[Getting started with Linux on CM-X300]]
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| − | * [[Linux Development for XScale modules]]
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| − | * [[Debian Linux for CM-X300]]
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