Mu-arm: Difference between revisions
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= ARM Microcontroller = |
= ARM Microcontroller = |
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| ⚫ | |||
Mini 2440 |
'''Mini 2440''' |
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* [[mini2440-friendlyarm|Friendly Arm]] |
* [[mini2440-friendlyarm|Friendly Arm]] |
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* [[mini2440-pengutronix|Pengutronix]] |
* [[mini2440-pengutronix|Pengutronix]] |
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== How to build the kernel == |
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To get running the kernel, we need to setup the environment with the proper toolchain so we can start to cross-compile the kernel. |
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=== GNU ARM Toolchain === |
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* Download arm-none-linux-gnueabi from sourcery.mentor.com or the manufacturer website |
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* Decompress the tarball and place in `~/CROSS_COMPILER` |
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* Add the path to your environment by editing `~/.bash_profile` and adding |
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<pre><nowiki> |
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PATH=$PATH:$HOME/bin:~/CROSS_COMPILER/arm/4.4.3/bin |
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</nowiki></pre> |
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=== Build the kernel === |
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* Download the kernel from kernel.org |
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* Create a working directory and decompress the kernel inside there |
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<pre><nowiki> |
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# mkdir kernel |
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# cd kernel |
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# wget http://mirrors.kernel.org/...linux-2.6.36... |
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# tar zxvf linux-2.6.36*tgz |
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# mkdir kernel-bin |
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# cd linux-2.6.36 |
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</nowiki></pre> |
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* Generate `.config` |
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<pre><nowiki> |
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CROSS_COMPILE=arm-none-linux-gnueabi- ARCH=arm make O=../kernel-bin/ mini2440_defconfig |
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</nowiki></pre> |
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* Modify the kernel |
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<pre><nowiki> |
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# cd ../kernel-bin |
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# make ARCH=arm menuconfig |
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# cd ../mini2440 |
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</nowiki></pre> |
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* Cross compile the kernel and modules |
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<pre><nowiki> |
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CROSS_COMPILE=arm-none-linux-gnueabi- ARCH=arm make O=../kernel-bin/ |
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</nowiki></pre> |
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* If using uboot, then generate uImage |
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<pre><nowiki> |
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# ../uboot/tools/mkimage -A arm -O linux -T kernel -C none -a 0x30008000 -e 0x30008000 -d ../kernel-bin/arch/arm/boot/zImage ../uImage |
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</nowiki></pre> |
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=== Kernel Modules === |
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* Build the modules that are going to be placed into the filesystem |
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<pre><nowiki> |
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CROSS_COMPILE=arm-none-linux-gnueabi- ARCH=arm make O=../kernel-bin/ modules |
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CROSS_COMPILE=arm-none-linux-gnueabi- ARCH=arm make O=../kernel-bin/ INSTALL_MOD_PATH=.. modules_install |
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</nowiki></pre> |
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* Mount the FS image and copy the files inside the root folder |
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<pre><nowiki> |
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# cp ../lib/modules/2.6.36/ /mnt/mini2440/rootfs/lib/modules/ -r |
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</nowiki></pre> |
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| ⚫ | |||
* Get the sources from git repository |
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<pre><nowiki> |
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# mkdir uboot |
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# cd uboot |
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# git clone git://repo.or.cz/u-boot-openmoko/mini2440.git |
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</nowiki></pre> |
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* Prepare and build uboot |
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<pre><nowiki> |
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# cd mini2440 |
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# make mini2440_config |
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# make all |
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</nowiki></pre> |
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