Differences

This shows you the differences between two versions of the page.

--- en:c1_building_kernel [2015/02/05 12:13]
charles.park [Linux (Cross build)]
+++ en:c1_building_kernel [2016/12/07 15:40] (current)
brian.kim [Toolchain (4.9.2)]
@@ Line 1: / Line 1: @@
+====== Installing required packages ======
+You will need install required packages before you start to build Linux kernel on your Ubuntu desktop.
+<code>
+$ sudo apt-get update
+$ sudo apt-get install git
+$ sudo apt-get install lib32stdc++6  lib32z1 lzop u-boot-tools
+$ sudo apt-get install build-essential gcc
+$ sudo apt-get install libncurses5-dev
+</code>
+====== Kernel ======
+This page introduce how you can download and compile the Linux kernel for **ODROID-C1**. You can select one of two version, GCC 4.9.2 or GCC 4.7.3. Since Linux release **v1.1**, the official toolchain for **ODROID-C1** is switched to **GCC 4.9.2**.
+===== Toolchain (4.9.2)=====
+Click one of the site to download toolchain to build Linux kernel.
+  * [[http://releases.linaro.org/archive/14.09/components/toolchain/binaries/gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_linux.tar.xz|Download #1]]
+  * [[http://dn.odroid.com/toolchains/gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_linux.tar.xz|Download #2]]
+Once the download is done, extract the tarball to **/opt/toolchains/**.
+<code>
+$ sudo mkdir -p /opt/toolchains
+$ sudo tar xvf gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_linux.tar.xz -C /opt/toolchains/
+</code>
+In order to add the toolchain path to PATH, paste below lines to **$HOME/.bashrc**.
+<code>
+export ARCH=arm
+export CROSS_COMPILE=arm-linux-gnueabihf-
+export PATH=/opt/toolchains/gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_linux/bin/:$PATH
+</code>
+You can check if the toolchain installed above works properly while checking the version of toolchain. If you can find **gcc version 4.9.2 20140904 (prerelease)** at the end of the line, the toolchain is well installed.
+<code>
+$ arm-linux-gnueabihf-gcc -v
+Using built-in specs.
+COLLECT_GCC=/opt/toolchains/gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_linux/bin/arm-linux-gnueabihf-gcc
+COLLECT_LTO_WRAPPER=/opt/toolchains/gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_linux/bin/../libexec/gcc/arm-linux-gnueabihf/4.9.2/lto-wrapper
+Target: arm-linux-gnueabihf
+Configured with: /cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/src/gcc-linaro-4.9-2014.09/configure --build=i686-build_pc-linux-gnu --host=i686-build_pc-linux-gnu --target=arm-linux-gnueabihf --prefix=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/install --with-sysroot=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/install/arm-linux-gnueabihf/libc --enable-languages=c,c++,fortran --disable-multilib --enable-multiarch --with-arch=armv7-a --with-tune=cortex-a9 --with-fpu=vfpv3-d16 --with-float=hard --with-pkgversion='crosstool-NG linaro-1.13.1-4.9-2014.09 - Linaro GCC 4.9-2014.09' --with-bugurl=https://bugs.launchpad.net/gcc-linaro --enable-__cxa_atexit --enable-libmudflap --enable-libgomp --enable-libssp --with-gmp=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-mpfr=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-mpc=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-isl=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-cloog=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-libelf=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --enable-threads=posix --disable-libstdcxx-pch --enable-linker-build-id --enable-plugin --enable-gold --with-local-prefix=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/install/arm-linux-gnueabihf/libc --enable-c99 --enable-long-long --with-mode=thumb --disable-multilib --with-float=hard
+Thread model: posix
+gcc version 4.9.2 20140904 (prerelease) (crosstool-NG linaro-1.13.1-4.9-2014.09 - Linaro GCC 4.9-2014.09)
+</code>
+===== Toolchain (4.7.3)=====
+Click one of the site to download toolchain to build Linux kernel.
+  * [[https://releases.linaro.org/13.04/components/toolchain/binaries/gcc-linaro-arm-linux-gnueabihf-4.7-2013.04-20130415_linux.tar.bz2|Download #1]]
+  * [[http://dn.odroid.com/toolchains/gcc-linaro-arm-linux-gnueabihf-4.7-2013.04-20130415_linux.tar.bz2|Download #2]]
+Once the download is done, extract the tarball to **/opt/toolchains/**.
+<code>
+$ sudo mkdir -p /opt/toolchains
+$ sudo tar jxvf gcc-linaro-arm-linux-gnueabihf-4.7-2012.12-20121214_linux.tar.bz2 -C /opt/toolchains/
+</code>
+In order to add the toolchain path to PATH, paste below lines to **$HOME/.bashrc**.
+<code>
+export ARCH=arm
+export CROSS_COMPILE=arm-linux-gnueabihf-
+export PATH=/opt/toolchains/gcc-linaro-arm-linux-gnueabihf-4.7-2013.04-20130415_linux/bin:$PATH
+</code>
+You can apply the change if you login again or import
+to apply this change, login again or evaluate **$HOME/.bashrc** with source command.
+<code>
+$ source ~/.bashrc
+</code>
+You can check if the toolchain installed above works properly while checking the version of toolchain. If you can find **gcc version 4.7.3 20130328 (prerelease)** at the end of the line, the toolchain is well installed.
+<code>
+$ arm-linux-gnueabihf-gcc -v
+Using built-in specs.
+COLLECT_GCC=arm-linux-gnueabihf-gcc
+COLLECT_LTO_WRAPPER=/opt/toolchains/gcc-linaro-arm-linux-gnueabihf-4.7-2013.04-20130415_linux/bin/../libexec/gcc/arm-linux-gnueabihf/4.7.3/lto-wrapper
+Target: arm-linux-gnueabihf
+Configured with: /cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/src/gcc-linaro-4.7-2013.04/configure --build=i686-build_pc-linux-gnu --host=i686-build_pc-linux-gnu --target=arm-linux-gnueabihf --prefix=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/install --with-sysroot=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/install/arm-linux-gnueabihf/libc --enable-languages=c,c++,fortran --enable-multilib --with-arch=armv7-a --with-tune=cortex-a9 --with-fpu=vfpv3-d16 --with-float=hard --with-pkgversion='crosstool-NG linaro-1.13.1-4.7-2013.04-20130415 - Linaro GCC 2013.04' --with-bugurl=https://bugs.launchpad.net/gcc-linaro --enable-__cxa_atexit --enable-libmudflap --enable-libgomp --enable-libssp --with-gmp=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-mpfr=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-mpc=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-ppl=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-cloog=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-libelf=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-host-libstdcxx='-L/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static/lib -lpwl' --enable-threads=posix --disable-libstdcxx-pch --enable-linker-build-id --enable-gold --with-local-prefix=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/install/arm-linux-gnueabihf/libc --enable-c99 --enable-long-long --with-mode=thumb
+Thread model: posix
+gcc version 4.7.3 20130328 (prerelease) (crosstool-NG linaro-1.13.1-4.7-2013.04-20130415 - Linaro GCC 2013.04)
+</code>
+===== Checkout =====
+You can checkout **U-boot** source tree from **[[https://github.com/hardkernel/u-boot/tree/odroidc-v2011.03|Hardkernel's Github]]**, please note that we distribute the Linux kernel in different branches for Android and other Linux distributions.
+==== Android ====
+<code>
+$ git clone --depth 1 https://github.com/hardkernel/linux.git -b odroidc-3.10.y-android
+$ cd linux
+</code>
+==== Linux ====
+<code>
+$ git clone --depth 1 https://github.com/hardkernel/linux.git -b odroidc-3.10.y
+$ cd linux
+</code>
+===== Compile =====
+You must do kernel configuration for **ODROID-C1**, then start to build. Adding **-j** option on make command will help you to finish compiling faster.
+<code>
+$ make odroidc_defconfig
+$ make <-j4>
+$ make <-j4> modules
+</code>
+You have done to compile the Linux kernel (zImage), the device tree file (.dtb) and kernel modules (.ko). But in order to boot on **ODROID-C1**, you need **uImage** apart from **zImage** which have boot information and simply can make this.
+<code>
+$ make uImage
+</code>
+===== Custom Kernel Build =====
+If you have some kernel drivers wish to include for your custom build, you can select the drivers easily in Linux kernel tree. **make menuconfig** will show you text based menus help you to select kernel drivers.
+<code>
+$ make menuconfig
+</code>
+Once you done selecting the drivers, exit from the menu screen. Then you can start kernel build with **make** again.
+<code>
+$ make <-j4>
+$ make <-j4> modules
+</code>
+When you exit from kernel menu screen, you will have **.config** in the current directory what have changes for your custom build. You can back up this as a file, my_kernel.config for example, or can make a patch if you manage your own git.
+<code>
+$ cp .config arch/arm/configs/odroidc_defconfig
+$ git add arch/arm/configs/odroidc_defconfig
+$ git commit -s -m "blahblahblah"
+$ git push
+</code>
+===== Installation =====
+There are different instructions to install Linux kernel image and device tree for Android and Linux. Since Android loads both from a boot partition, we have to use **fastboot** to install into the dedicated partition. Please refer the partition table from [[http://odroid.com/dokuwiki/doku.php?id=en:c1_partition_table|here]]. In contrast, Linux boots by the instructions described in **boot.ini** the 1st FAT partition.
+==== Android ====
+This is the instruction to install kernel image, **uImage**, to the boot card.
+<code>
+$ sudo fastboot flash boot <path/of/your/uImage>
+</code>
+This is to install a device tree file, **meson8b_odroidc.dtb**.
+<code>
+$ sudo fastboot flash dtb <path/of/your/meson8b_odroidc.dtb>
+</code>
+==== Linux (Cross build) ====
+<WRAP center round important 100%>
+** This explanation assume that your USB memory CARD reader is assigned at /dev/sdc. Be careful!**
+</WRAP>
+. Plug the Boot-Device(eMMC or SD) into the USB memory CARD reader and Connect the USB memory CARD reader to your HOST PC(Linux OS).
+. Copy the uImage and DT((meson8b_odroidc.dtb) to the FAT partition(1st partition) in the Boot-Device.
+<code>
+$ mkdir -p mount
+$ sudo mount /dev/sdc1 ./mount
+$ sudo cp arch/arm/boot/uImage arch/arm/boot/dts/meson8b_odroidc.dtb ./mount && sync && sudo umount ./mount
+</code>
+. Copy the driver modules to the EXT4 partition(2nd partition) in the Boot-Device.
+<code>
+$ sudo mount /dev/sdc2 ./mount
+$ sudo make modules_install ARCH=arm INSTALL_MOD_PATH=./mount && sync && sudo umount ./mount
+$ rm -rf mount
+</code>