Book Image

Yocto for Raspberry Pi

By : TEXIER Pierre-Jean, Petter Mabäcker
Book Image

Yocto for Raspberry Pi

By: TEXIER Pierre-Jean, Petter Mabäcker

Overview of this book

The Yocto Project is a Linux Foundation workgroup, which produces tools (SDK) and processes (configuration, compilation, installation) that will enable the creation of Linux distributions for embedded software, independent of the architecture of embedded software (Raspberry Pi, i.MX6, and so on). It is a powerful build system that allows you to master your personal or professional development. This book presents you with the configuration of the Yocto Framework for the Raspberry Pi, allowing you to create amazing and innovative projects using the Yocto/ OpenEmbedded eco-system. It starts with the basic introduction of Yocto's build system, and takes you through the setup and deployment steps for Yocto. It then helps you to develop an understanding of Bitbake (the task scheduler), and learn how to create a basic recipe through a GPIO application example. You can then explore the different types of Yocto recipe elements (LICENSE, FILES, SRC_URI, and so on). Next, you will learn how to customize existing recipes in Yocto/OE layers and add layers to your custom environment (qt5 for example).
Table of Contents (18 chapters)
Yocto for Raspberry Pi
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
3
Mastering Baking with Hob and Toaster

Building the Poky image


At this stage of development, let's have a look at the available images and certified compatible for our platform (.bb files).

Choice of image

Poky provides several pre-designed image recipes that we can use to build our own binary image. We can check the list of available images by running the following command from the poky directory:

$ ls meta*/recipes*/images/*.bb

All the recipes provide images that are, in essence, sets of unpacked and configured packages, generating a filesystem that we can use on actual hardware (for further information about different images, you can visit ( http://www.yoctoproject.org/docs/latest/mega-manual/mega-manual.html#ref-images ).

Next, here's a brief representation of available images:

We can add the layers proposed by meta-raspberry to all of these layers:

$ ls meta-raspberrypi/recipes-core/images/*.bb
rpi-basic-image.bb
rpi-hwup-image.bb
rpi-test-image.bb
  • rpi-hwup-image.bb: This is an image based on core-image-minimal.

  • rpi-basic...