Kernel

This page introduce how you can download and compile the Linux kernel for ODROID-M1.

You will need install required packages before you start to build Linux kernel on your Ubuntu desktop.

host

$ sudo apt-get update
$ sudo apt-get install git lzop build-essential gcc bc libncurses5-dev libc6-i386 lib32stdc++6 zlib1g:i386

https://docs.linuxfactory.or.kr/guides/compile_kernel.html

Click one of the site to download toolchain to build U-boot.

• Linaro GCC 7.4-2019.02

Once the download is done, extract the tarball to /opt/toolchains/.

host

$ sudo mkdir -p /opt/toolchains
$ sudo tar xvf gcc-linaro-7.4.1-2019.02-x86_64_aarch64-linux-gnu.tar.xz -C /opt/toolchains/

In order to add the toolchain path to PATH, paste below lines to $HOME/.bashrc.

host

export ARCH=arm64
export CROSS_COMPILE=aarch64-linux-gnu-
export PATH=$TOPDIR/opt/toolchains/gcc-linaro-7.4.1-2019.02-x86_64_aarch64-linux-gnu/bin:$PATH

You can apply the change if you login again or import to apply this change, login again or evaluate $HOME/.bashrc with source command.

host

$ source ~/.bashrc

You can check if the toolchain installed above works properly while checking the version of toolchain. If you can find gcc version 7.4.1 20181213 [linaro-7.4-2019.02 revision 56ec6f6b99cc167ff0c2f8e1a2eed33b1edc85d4] at the end of the line, the toolchain is well installed.

host

$ aarch64-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=aarch64-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/opt/toolchains/gcc-linaro-7.4.1-2019.02-x86_64_aarch64-linux-gnu/bin/../libexec/gcc/aarch64-linux-gnu/7.4.1/lto-wrapper
Target: aarch64-linux-gnu
Configured with: '/home/tcwg-buildslave/workspace/tcwg-make-release_1/snapshots/gcc.git~linaro-7.4-2019.02/configure' SHELL=/bin/bash --with-mpc=/home/tcwg-buildslave/workspace/tcwg-make-release_1/_build/builds/destdir/x86_64-unknown-linux-gnu --with-mpfr=/home/tcwg-buildslave/workspace/tcwg-make-release_1/_build/builds/destdir/x86_64-unknown-linux-gnu --with-gmp=/home/tcwg-buildslave/workspace/tcwg-make-release_1/_build/builds/destdir/x86_64-unknown-linux-gnu --with-gnu-as --with-gnu-ld --disable-libmudflap --enable-lto --enable-shared --without-included-gettext --enable-nls --with-system-zlib --disable-sjlj-exceptions --enable-gnu-unique-object --enable-linker-build-id --disable-libstdcxx-pch --enable-c99 --enable-clocale=gnu --enable-libstdcxx-debug --enable-long-long --with-cloog=no --with-ppl=no --with-isl=no --disable-multilib --enable-fix-cortex-a53-835769 --enable-fix-cortex-a53-843419 --with-arch=armv8-a --enable-threads=posix --enable-multiarch --enable-libstdcxx-time=yes --enable-gnu-indirect-function --with-build-sysroot=/home/tcwg-buildslave/workspace/tcwg-make-release_1/_build/sysroots/aarch64-linux-gnu --with-sysroot=/home/tcwg-buildslave/workspace/tcwg-make-release_1/_build/builds/destdir/x86_64-unknown-linux-gnu/aarch64-linux-gnu/libc --enable-checking=release --disable-bootstrap --enable-languages=c,c++,fortran,lto --build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu --target=aarch64-linux-gnu --prefix=/home/tcwg-buildslave/workspace/tcwg-make-release_1/_build/builds/destdir/x86_64-unknown-linux-gnu
Thread model: posix
gcc version 7.4.1 20181213 [linaro-7.4-2019.02 revision 56ec6f6b99cc167ff0c2f8e1a2eed33b1edc85d4] (Linaro GCC 7.4-2019.02)

You can check out Linux kernel source tree from Hardkernel's Github, please note that we distribute the Linux kernel in different branches for Android and other Linux distributions.

Please refer to the link, https://docs.linuxfactory.or.kr/guides/compile_kernel.html