How to compile the kernel for Rugged Board A5d2x

Objective:

This guide describes a method of compile the kernel for rugged board a5d2x.

Materials:

Hardware:

Software:

  • Ubuntu 16.04

Procedure:

The following list shows what you need in order to use a Linux-based build host to build images:
  • Build Host A build host with a minimum of 50 Gbytes of free disk space that is running a supported Linux distribution (i.e. recent releases of Fedora, openSUSE, CentOS, Debian, or Ubuntu).
  • Build Host Packages Appropriate packages installed on the build host.

The Build Host Packages:

The following list shows the required packages needed to build an image that runs on QEMU in graphical mode.
Ubuntu and Debian:
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$ sudo apt-get install gawk wget git-core diffstat unzip texinfo gcc-multilib \
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build-essential chrpath socat libsdl1.2-dev xterm
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Source Downloading:

Step1: Create a directory to download the kernel source.
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$ mkdir kernel_source
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cd kernel_source
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Step2: Clone linux-rba5d2x with the proper branch.
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$ git clone https://github.com/rugged-board/linux-rba5d2x.git
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$ cd linux-rba5d2x
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$ git checkout origin/linux-rba5d2x
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Step3: Before configuring the kernel,Please run the arm environment to cross compile the downloaded kernel source. If you dont have arm toolchain, please follow step4 to download the toolchain.
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$ . /opt/poky-tiny/2.5.2/environment-setup-cortexa5hf-neon-poky-linux-musleabi
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Step4: If you haven't downloaded the toolchain before please follow below link.
Step5: configure the kernel for rugged board a5d2x.
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$ make rb_a5d2x_defconfig
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Step6: compile the kernel for rugged board a5d2x using below command.
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$ make
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Step7: After compiling the kernel source get the zImage and oftree from below paths in kernel source. zImage: arch/arm/boot/zImage oftree: arch/arm/boot/dts/a5d2x-rugged_board.dtb