How to make a custom Linux image for Toradex Apalis iMX6Q

I’m going to show you how to make a system image for Toradex iMX6Q with the following libraries:

  • OpenGL
  • Qt with EGLFS plugin

First of all we need to know about the YOCTO project and install the required packages.

What is Yocto?

The Yocto project (http://www.yoctoproject.org/) is an embedded Linux distribution builder that makes use of several other open source projects.

The Yocto project provides a reference build sytem for embedded Linux, called Poky, which has the BitBake and OpenEmbedded-Core (OE-Core) projects at its base. The purpose of Poky is to build the components needed for an embedded Linux product, namely:

  1. A boot loader Image
  2. A linux kernel image
  3. A root filesystem
  4. Toolchain and SDK for aplication development

Then we need to clone the project from Toradex. So we need to install and programs, after that we need to configure the build process.

Toradex

  • Name: Apalis iMX6 Quad 2GB IT
  • Carrier: Ixora v1.1
  • GPU: Vivante GC2000
  • CPU: Cortex-A9

Hardware Requirements

My machine is running Ubuntu 18.04 and has the following hardware:

  • CPU i3–8100 CPU @ 3.60GHz
  • RAM 16G
  • Storage 2T HDD

Install

I’m going to use Ubuntu 18.04 on a machine with 16 GiB of RAM to compile a Linux for iMX6Q.

Package Requirement

These packages are needed by Yocto:

$ sudo apt-get install gawk wget git-core diffstat unzip texinfo gcc-multilib build-essential chrpath socat libsdl1.2-dev xterm make xsltproc docbook-utils fop dblatex xmlto autoconf automake libtool libglib2.0-dev python-gtk2 bsdmainutils screen

And these packages:

$ sudo dpkg --add-architecture i386$ sudo apt-get update$ sudo apt-get install g++-5-multilib$ sudo apt-get install curl dosfstools gawk g++-multilib gcc-multilib lib32z1-dev libcrypto++6:i386 libcrypto++-dev:i386 liblzo2-dev:i386 lzop libsdl1.2-dev libstdc++-5-dev:i386 libusb-1.0-0:i386 libusb-1.0-0-dev:i386 uuid-dev:i386 texinfo chrpath

Install Git

$ sudo apt install git$ git config --global user.name "Name"$ git config --global user.email Name@example.com

Install git-repo

$ mkdir ~/bin$ export PATH=~/bin:$PATH$ curl http://commondatastorage.googleapis.com/git-repo-downloads/repo > ~/bin/repo$ chmod a+x ~/bin/repo

Install Yocto-OpenEmbedded

$ mkdir oe-core$ cd oe-core$ repo init -u http://git.toradex.com/toradex-bsp-platform.git -b LinuxImageV2.8$ repo sync

In the oe-core directory we need to setup environment variable so we use the following command

or

All config files will be stored at .

The build directory contains a conf directory with some files.

There are and in the conf directory.

  • : contains metadata layers.
  • : contains configuration variable.

Insert following configuration into file.

MACHINE ?= "apalis-imx6”#INHERIT += "rm_work”ACCEPT_FSL_EULA = "1”DISTRO_FEATURES_remove = "x11 wayland”IMAGE_INSTALL_remove = "eglinfo-x11”IMAGE_INSTALL_append = " qtbase qtbase-plugins cinematicexperience liberation-fonts"PACKAGECONFIG_FONTS_append_pn-qtbase = " fontconfig”IMAGE_INSTALL_remove = "backports"CORE_IMAGE_EXTRA_INSTALL += "openssh \vim \qtbase-plugins \qtbase-tools \qtdeclarative \qtdeclarative-tools \qtdeclarative-qmlplugins \qtmultimedia \qtmultimedia-plugins \qtmultimedia-qmlplugins \qtsvg \qtsvg-plugins \qtsensors \qtimageformats-plugins \qtsystems \qtsystems-tools \qtsystems-qmlplugins \qtscript \qt3d \qt3d-qmlplugins \qt3d \qt3d-qmlplugins \qt3d-tools \qtgraphicaleffects-qmlplugins \qtconnectivity-qmlplugins \qtlocation-plugins \qtlocation-qmlplugins \cinematicexperience \fb-test fbgrab fbida fbset-modes \es2gears \qt4-examples \"PACKAGECONFIG_append_pn-qtbase = " gles2 eglfs "DISTRO_FEATURES_append = " opengles2 egl opengl gles gbm dri eglfs gles2 "MACHINEOVERRIDES .= ":use-mainline-bsp"PACKAGECONFIG_append = " linuxfb eglfs gbm gles2 kms”PACKAGECONFIG_remove = "gl xcb xcb-xinput"

Start compiling with the following command:

After compile successfully finished we are going to setup network and U-BOOT configuration.

Then I can boot my custom Linux from network for development.

Reference