OpenEuler is an open-source operating system. The current openEuler kernel is based on Linux.It fully unleashes the potential of computing chips. As an efficient, stable, and secure open-source OS built by global open-source contributors, openEuler applies to database, big data, cloud computing, and artificial intelligence (AI) scenarios. In addition, openEuler community is an open-source community for global OSs. Through community cooperation, openEuler builds an innovative platform, builds a unified and open OS that supports multiple processor architectures, and promotes the prosperity of the software and hardware application ecosystem.

In this article, we will take OpenEuler Enbedded as example,the openEuler Embedded is a Linux version for embedded scenarios based on the openEuler community version. The embedded system applications are restricted by multiple factors, such as resources, power consumption, and compatibility. Therefore, the server-oriented Linux versions and the associated build systems can hardly satisfy the requirements of embedded scenarios. Yocto is widely used to customize and build embedded Linux. openEuler Embedded is also built using Yocto.

Build OpenEuler Kernel

The OpenEuler Kernel can be downloaded from the link kernel, we take OLK-6.6 which is based on LTS v6.6 as example for this usage. Firstly, we create the workspace directory as below: 

mkdir workspace
cd workspace/
mkdir kernel rootfs tool

Download the Kernel and Toolchain

cd workspace/kernel
wget https://gitee.com/openeuler/kernel/repository/archive/OLK-6.6.zip
unzip OLK-6.6.zip

cd ../tool/
wget https://developer.arm.com/-/media/Files/downloads/gnu/13.2.rel1/binrel/arm-gnu-toolchain-13.2.rel1-x86_64-aarch64-none-linux-gnu.tar.xz
tar -xvf arm-gnu-toolchain-13.2.rel1-x86_64-aarch64-none-linux-gnu.tar.xz

Build the Kernel Image

cd $workspace/kernel/kernel-OLK-6.6
export export CROSS_COMPILE=$workspace/tool/arm-gnu-toolchain-13.2.Rel1-x86_64-aarch64-none-linux-gnu/bin/aarch64-none-linux-gnu-
export ARCH=arm64
make openeuler_defconfig
make -j $nproc

Create the OpenEuler root filessystem

The openEuler Embedded support multiple architecture such as ARM64、ARM32、x86-64、RISC-V etc. For the ARM64, it add the QEMU support, we can leverate the QEMU root filesystem, then create the partition image for the TC2 FVP platform.

Create the OpenEuler Embeded root filesystem

Let's take ubuntu 20.04 host enviroment as exmaple:

Step1: Install the related tools and package

cd $workspace/kernel/kernel-OLK-6.6
export export CROSS_COMPILE=$workspace/tool/arm-gnu-toolchain-13.2.Rel1-x86_64-aarch64-none-linux-gnu/bin/aarch64-none-linux-gnu-
export ARCH=arm64
make openeuler_defconfig
make -j $nproc

Step2: aaa

Step3: 

Create the parition image for TC2 FVP platform

Run the OpenEuler on TC2 FVP platform

Run the OpenEuler on TC2 FVP platform

Setup the TC2 software stak 

Change for OpenEuler filesystem support

Run the system