Mender is an open source over-the-air (OTA) software updater for embedded Linux devices. Mender comprises a client running at the embedded device, as well as a server that manages deployments across many devices.
This repository contains Yocto integration layers for various boards.
Please check out https://hub.mender.io for more information on supported boards and instructions on how to setup environment and build images.
This section is for anyone interested in contributing support for a board.
meta-mender-community is a repository containing multiple Yocto layers for integrating Mender onto various boards.
The layers are structured based on upstream BSP layers and not individual boards.
There are multiple types of layers included here.
SoC-oriented:
- meta-mender-amlogic
- meta-mender-nxp
- meta-mender-tegra ...
Vendor-oriented:
- meta-mender-raspberrypi
- meta-mender-toradex-nxp
- meta-mender-octavo-osd32mp ...
Naming of integration layers follows the upstream naming conventions with SoM vendor layer name having priority. The convention is:
meta-mender-<upstream suffix>
This should make it clear which layer is targeting what BSP.
Traditionally meta-mender-community
has required board integrations to provide build setup configuration through the repo tool by Google. As it has a number of shortcomings, things are being moved to kas.
All submitted board integrations need to provide a build setup strategy. New repo
-based setups will usually be rejected.
For an introduction on kas
, please see the tutorial article on the Mender Hub.
To build an image using kas
, you simply call it with the build
verb and the desired configuration. Example for the Raspberry Pi 4, 64bit:
kas build meta-mender-community/kas/raspberrypi4-64.yml
Install the kas
tool (optionally, you can install globally for all users. Run as root
, respectively under sudo
then):
pip install kas
Clone this repository:
git clone https://github.com/mendersoftware/meta-mender-community
Create a build directory and change into it:
mkdir -p meta-mender-community/my-build && cd meta-mender-community/my-build
Call kas to build for the Raspberry Pi 4, 64bit:
kas build ../kas/raspberrypi4-64.yml
The canonical build structure including resulting deployable images is located under meta-mender-community/my-build/build
.
In the most straightforward case, a board integration can simply consist of a kas
configuration file. Those are located in the kas
top level directory.
Some relevant best practises:
- if possible, common parts of board integrations should be factored out into includes. Those are located in the
kas/include
directory. - the
mender-full.yml
ormender-full-ubi.yml
includes should be used as baseline - a minimal approach concerning image and
DISTRO
should be preferred- the default image is
core-image-minimal
, consider keeping it unless your platform has specific requirements - the default
DISTRO
is anodistro
, pure OpenEmbedded setup. While selecting a larger or customDISTRO
is acceptable, consider being as slim as possible to provide the highest degree of freedom to your users.
- the default image is
Requirements:
- revisions of metadata layers defined in the configurations must be fixed. Exception: the
master
branch which tracks the Yocto Project / OpenEmbedded upstream - the primary targetted branch must be a Yocto Project LTS correlated one
- add your board to the automated build configuration at
.github/workflows/build.yml
, marked asexperimental
. It will be moved out of experimental after a number of successful builds by the Mender team.
We welcome and ask for your contribution. If you would like to contribute to Mender, please read our guide on how to best get started contributing code or documentation.
Community contributed layers will be co-maintained by the Mender team on a best-effort base. Coordination of reviews and merges happens case by case and based on responsiveness, respectively activity. Reviews and acknowledgements by the original contributors are explicitly not required for further contributions, in order to not block development and maintenance.
Mender is licensed under the Apache License, Version 2.0. See LICENSE for the full license text.
- Join the Mender Hub discussion forum
- Follow us on Twitter. Please feel free to tweet us questions.
- Fork us on Github
- Create an issue in the bugtracker
- Email us at [email protected]
- Connect to the #mender IRC channel on Libera
Mender was created by the team at Northern.tech AS, with many contributions from the community. Thanks everyone!
Mender is sponsored by Northern.tech AS.