tutorials:dvk521:documentations:kernel_porting_and_configuration
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tutorials:dvk521:documentations:kernel_porting_and_configuration [2013/11/21 15:54] waveshare |
tutorials:dvk521:documentations:kernel_porting_and_configuration [2013/12/23 14:50] (current) |
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| - | ====== Development Environment Setup ====== | + | ====== Kernel Porting and Configuration ====== |
| - | ===== Install ubuntu ===== | + | ==== Kernel Porting ==== |
| - | What to do: install ubuntu on the computer hard drive by using [[https://wiki.ubuntu.com/WubiGuide|wubi.exe]] | + | Get the linux kernel source code [[http://dl.cubieboard.org/parteners/waveshare/Source_Code/linux-sunxi-sunxi-3.4.61.tar.gz|linux-sunxi-sunxi-3.4.61]], |
| - | Default System: WIN7 32 bit | + | Or can be obtained from the internet: |
| - | (Note: it's possible to install the ubuntu12.04 on virtual machine, however, some wired problems may occur when burning the image into the SD card) | + | https://github.com/linux-sunxi/linux-sunxi/releases , |
| + | To avoid unexpected error while porting, please download the 3.4.61 version kernel. | ||
| + | === Extract the kernel source code === | ||
| + | Assume that the source code was placed under /home/waveshare/cubieboard/kernel directory, use the following command to extract it: | ||
| + | #cd /home/waveshare/cubieboard/kernel | ||
| + | #tar -xzvf linux-sunxi-sunxi-3.4.61.tar.gz | ||
| + | Now we get the linux-sunxi-sunxi-3.4.61 original source code, as shown in the picture below: | ||
| + | {{.:document-5_1.jpg}} | ||
| - | ===== ubuntu Basic Commands ===== | ||
| - | Update software source: | ||
| - | # sudo apt-get upgrade | ||
| - | # sudo apt-get install update | ||
| - | Install text editor vim: | ||
| - | # sudo apt-get vim | ||
| + | === Assign the cross compiler === | ||
| + | The purpose of kernel porting is to run the linux-sunxi-sunxi-3.4.61 on Cubieboard. | ||
| + | Modify the Makefile under root directory: | ||
| + | #cd linux-sunxi-sunxi-3.4.61 | ||
| + | #vi Makefile | ||
| + | Edit the following lines: | ||
| + | export KBUILD_BUILDHOST := $(SUBARCH) | ||
| + | ARCH ?= $(SUBARCH) | ||
| + | CROSS_COMPILE ?= | ||
| + | As: | ||
| + | export KBUILD_BUILDHOST := $(SUBARCH) | ||
| + | ARCH ?= arm | ||
| + | CROSS_COMPILE ?= arm-linux-gnueabihf- | ||
| + | ARCH specifies the target platform as arm, CROSS_COMPILE assigns the cross compile tool chain. As shown in the picture below: | ||
| + | {{.:document-5_1.jpg}} | ||
| - | ===== Cross Compiler Installation ===== | + | Note: the vim editor is recommended. |
| - | The ARM cross compile tool chain is required for porting kernel, use the following command to install: | + | === Clear the temp files === |
| - | # sudo apt-get install gcc-arm-linux-gnueabihf | + | Under the root directory, enter: |
| + | #make clean | ||
| + | === Copy the default config file === | ||
| + | Under the root directory, enter: | ||
| + | #make sun4i_defconfig | ||
| + | A hidden .config file will be generated under the root directory. | ||
| + | === Config the kernel === | ||
| + | Under the root directory, enter: | ||
| + | #make menuconfig | ||
| + | Config the kernel on the popup window, as shown in the picture below: | ||
| + | {{.:document-5_3.jpg}} | ||
| + | === Compile the kernel === | ||
| + | Under the root directory, enter: | ||
| + | #make uImage | ||
| + | It will take much time to complete the compiling. | ||
| + | When completed, the compressed kernel image will be generated under linux-sunxi-sunxi-3.4.61/arch/arm/boot directory. | ||
| <WRAP noprint> | <WRAP noprint> | ||
| {{tag>Cubieboard Cubietruck}} | {{tag>Cubieboard Cubietruck}} | ||
| </WRAP> | </WRAP> | ||
tutorials/dvk521/documentations/kernel_porting_and_configuration.txt · Last modified: 2013/12/23 14:50 (external edit)
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