tq-systems / ci-meta-tq

CI testbed for meta-tq
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TQ-Systems ARM modules example workspace for Yocto Project build setup

[[TOC]]

Foreword

This repo contains setup, configuration and dependencies use to build and test the meta-tq hardware support layer. All Yocto Project / Open Embedded layers the build depends on, are included as git submodules, to allow reproducible builds.

Clone this repo using git clone --branch=<branch-name> --recurse-submodules <url>

License information

This repo contains scripts released under the GPLv2, see the file COPYING

This repo allows you to setup a workspace / buildspace for poky / the Yocto Project combining several recipe collections (meta layers). When using this repo to build software, you need to understand and accept all licenses of the software beeing built. You are responsible to fulfil all obligations by these licenses.

Supported branches of meta-tq

This project supports the following branches of meta-tq:

Attention: use README.md of used branch for exact details.

Branch names correspond to Yocto Project release names. Special branches supporting a special setup are named <release-name>-<module>

When switching branches keep in mind to keep the submodules in sync:

git submodule sync
git submodule update --init

Supported boards

See README of TQ-Sytems GmbH hardware support layer (meta-tq/meta-tq) or use ./ls-machines to list machines from meta-tq.

Quick Start Guide

Needed Tools / Prerequisites

For compatible environments and tools needed by the Yocto Project / OpenEmbedded build environment refer to the documentation of Yocto Project / OpenEmbedded.

Scripts for CI and setup of the build environment in this repository additionally have the following prerequisites:

Setting up an initial build space

To set up an initial build space, clone this repo using

git clone --branch=<branch-name> --recurse-submodules <url>

change to checked out dir and

. ./setup-environment <builddir> <config>

You can override defaults with:

before sourcing the script. This script uses the requested configuration from sources/template/conf/templates/ci/bblayers.conf.<config> as initial template for your bblayer.conf

Additionally some config variables are injected via auto.conf.normal from sources/template/conf/templates/ci/

In case you have a ~/.oe or ~/.yocto dir a site.conf file from this dir will be symlinked to the conf dir inside the build directory to allow machine specific overrides. Good use case for this are things like

Internally the oe-init-build-env script from the used openembedded / poky meta layer will be sourced from setup-environment to get the bitbake environment

After this step, everything is setup to build an image using bitbake.

Return to an existing build space

To return to an existing buildspace go to the checked out dir and

. ./setup-environment <builddir>

Configurations

Under sources/template/conf/templates/ci several configs are supplied as starting point for own bblayers.conf

config description
mainline for machines not depending on a SOC vendor layer (mainline)
imx for machines with i.MX CPU, uses meta-freescale
ti machines with TI Sitara (AM335x, AM57xx, AM65xx, AM64xx), uses meta-ti
ls machines with NXP Layerscape CPU, uses meta-freescale

Reproducible build environment

Devolopment and automated builds are supported by the scripts under ci and configuration under ./sources/template/conf/templates/ci, notably

Build all supported machines

To build all supported machines from one of the configs, one can use the CI helper script:

ci/build_all <builddir> <configuration>

Depending on the configuration, following images will be built:

config distro image kernel
mainline spaetzle tq-image-small-debug linux-tq
mainline dumpling tq-image-generic-debug linux-tq
mainline dumpling-wayland tq-image-weston-debug linux-tq
imx spaetzle-nxp tq-image-small-debug linux-imx-tq
imx dumpling-wayland-nxp tq-image-weston-debug linux-imx-tq
ti spaetzle-ti tq-image-small-debug linux-ti-tq
ti dumpling-wayland-ti tq-image-weston-debug linux-ti-tq
ls spaetzle tq-image-small-debug linux-imx-tq or linux-tq
ls dumpling tq-image-generic-debug linux-imx-tq or linux-tq

The kernel recipes are defined in meta-tq hardware support layer, image recipes and distro configs can be found in the meta-dumpling distro layer. Both layers are part of the meta-tq repository.

Images:

image description
tq-image-small[-debug] small image depending on MACHINE_FEATURES
tq-image-generic[-debug] basic set of tools depending on MACHINE_FEATURES
tq-image-weston[-debug] weston GUI and multimedia support

Clean build

To force a clean build of all supported machines and generate archives, do

ci/build_all <builddir> <config>

Building package premirror

To help to create a package premirror (to support offline builds), one can use the CI helper script:

ci/fill_mirror <builddir> <config>

One have to define the following stuff in your site.conf:

SOURCE_MIRROR_URL ?= "file://<full path>/"
INHERIT += "own-mirrors"

PREMIRRORS_prepend = "\
        git://.*/.* file://full path>/ \n \
        ftp://.*/.* file://full path>/ \n \
        http://.*/.* file://full path>/ \n \
        https://.*/.* file://full path>/ \n \
        "

To fill the mirror, the script

This way the mirror can be used to do offline builds without downloading anything with BB_FETCH_PREMIRRORONLY=1

Security

Attention This project is focused on board bringup and demonstration for TQ-Systems starter kits. Since embedded projects have different goals, the Yocto Project brings lots of features to modify system configuration and setup. This project is not a turn key distribution but a starting point for own developments.

Attention RootFS created with this setup has for demonstration purpose and ease of development no root password set and allows passwordless ssh root access. Please make sure, to remove things like

from IMAGE_FEATURES and / or IMAGE_EXTRA_FEATURES before release. View the openembedded / Yocto Project and bitbake documentation.