Book Image

Embedded Linux Development using Yocto Projects - Second Edition

By : Otavio Salvador, Daiane Angolini
Book Image

Embedded Linux Development using Yocto Projects - Second Edition

By: Otavio Salvador, Daiane Angolini

Overview of this book

Yocto Project is turning out to be the best integration framework for creating reliable embedded Linux projects. It has the edge over other frameworks because of its features such as less development time and improved reliability and robustness. Embedded Linux Development using Yocto Project starts with an in-depth explanation of all Yocto Project tools, to help you perform different Linux-based tasks. The book then moves on to in-depth explanations of Poky and BitBake. It also includes some practical use cases for building a Linux subsystem project using Yocto Project tools available for embedded Linux. The book also covers topics such as SDK, recipetool, and others. By the end of the book, you will have learned how to generate and run an image for real hardware boards and will have gained hands-on experience at building efficient Linux systems using Yocto Project.
Table of Contents (22 chapters)
Title Page
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
7
Diving into BitBake Metadata
Index

Metadata


The metadata which is composed of a mix of Python and Shell Script text files, provides a tremendously flexible system. Poky uses this to extend OpenEmbedded-Core and includes two different layers, which are another metadata subsets shown as follows:

  • meta-poky: This layer provides the default and supported distributions, visual branding, and metadata tracking information (maintainers, upstream status, and so on)
  • meta-yocto-bsp: Provides the Board Support Package (BSP) used as the reference for the Yocto Project development and Quality Assurance (QA) process

Chapter 8, Developing with Yocto Projects, explores the metadata in more detail and serves as a reference when we write our own recipes.