README.adoc

meta-updater

Meta-updater is a Yocto layer that enables over-the-air updates (OTA) with OSTree and aktualizr — the default client for HERE OTA Connect.

OSTree is a tool for atomic full file system upgrades with rollback capability. OSTree has several advantages over traditional dual-bank systems, but the most important one is that it minimizes network bandwidth and data storage footprint by sharing files with the same contents across file system deployments.

Aktualizr implements Uptane, supports device authentication and provisioning, and is integrated with OSTree. You can connect aktualizr to your own server solution or sign up for a free account at HERE OTA Connect to get started.

Quickstart

If you don’t already have a Yocto project that you want to add OTA to, you can use the HERE OTA Connect Quickstart project to rapidly get up and running on a Raspberry Pi or with QEMU. It takes a standard poky distribution, and adds OTA and OSTree capabilities.

Dependencies

In addition to the standard Yocto dependencies, meta-updater generally requires a few additional dependencies, depending on your use case and target platform. To install these additional packages on Debian/Ubuntu, run this:

sudo apt install cpu-checker default-jre parted

To build for Minnowboard with GRUB, you will also need to install TianoCore’s ovmf package on your host system. On Debian/Ubuntu, you can do so with this command:

sudo apt install ovmf

Table of Contents

The following documentation focuses on tasks that involve the meta-updater layer. If you want to get an idea of the overall developer workflow in OTA Connect, see the OTA Connect Developer Guide.

• Supported boards

  Find out if your board is supported and learn about the minimum hardware requirements.

• Build an Automotive Grade Linux image

  Learn how to use this layer as part of AGL.

• Add OTA functionality to an existing Yocto project

  Learn how to add this layer to your own Yocto project.

• SOTA-related variables in local.conf

  Learn how to configure OTA-related functionality when building images, including how to install custom versions of aktualizr.

• Recommended configuration

  Learn how to optimize your build for development or production.

• Provisoning methods

  Learn more about the methods for provisioning devices. For more detail, you may also want to read about how to enable device credential provisioning or how to simulate it for testing.

• Advanced usage

  Learn about the garage-push and garage-sign utilities, aktualizr configuration recipes, and service resource control.

• Testing with oe-selftest and ptest

  Learn how to use the oe-selftest framework for quality assurance and how to run the aktualizr test suite via ptest.

• Troubleshooting

  Get help on common problems.

License

This code is licensed under the MIT license, a copy of which can be found in this repository. All code is copyright HERE Europe B.V., 2016-2020.

We require that contributors accept the terms of Linux Foundation’s Developer Certificate of Origin. Please see the contribution instructions of aktualizr for more information.