Yocto Project Board Support Package Developer’s Guide

The Yocto Project

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Note

• This version of this manual is for the 3.1 release of the Yocto Project. To be sure you have the latest version of the manual for this release, go to the Yocto Project documentation page and select the manual from that site. Manuals from the site are more up-to-date than manuals derived from the Yocto Project released TAR files.

• If you located this manual through a web search, the version of the manual might not be the one you want (e.g. the search might have returned a manual much older than the Yocto Project version with which you are working). You can see all Yocto Project major releases by visiting the Releases page. If you need a version of this manual for a different Yocto Project release, visit the Yocto Project documentation page and select the manual set by using the “ACTIVE RELEASES DOCUMENTATION” or “DOCUMENTS ARCHIVE” pull-down menus.

• To report any inaccuracies or problems with this (or any other Yocto Project) manual, send an email to the Yocto Project documentation mailing list at docs@lists.yoctoproject.org or log into the freenode #yocto channel.

Revision	Date	Note
0.9	November 2010	The initial document released with the Yocto Project 0.9 Release
1.0	April 2011	Released with the Yocto Project 1.0 Release.
1.1	October 2011	Released with the Yocto Project 1.1 Release.
1.2	April 2012	Released with the Yocto Project 1.2 Release.
1.3	October 2012	Released with the Yocto Project 1.3 Release.
1.4	April 2013	Released with the Yocto Project 1.4 Release.
1.5	October 2013	Released with the Yocto Project 1.5 Release.
1.6	April 2014	Released with the Yocto Project 1.6 Release.
1.7	October 2014	Released with the Yocto Project 1.7 Release.
1.8	April 2015	Released with the Yocto Project 1.8 Release.
2.0	October 2015	Released with the Yocto Project 2.0 Release.
2.1	April 2016	Released with the Yocto Project 2.1 Release.
2.2	October 2016	Released with the Yocto Project 2.2 Release.
2.3	May 2017	Released with the Yocto Project 2.3 Release.
2.4	October 2017	Released with the Yocto Project 2.4 Release.
2.5	May 2018	Released with the Yocto Project 2.5 Release.
2.6	November 2018	Released with the Yocto Project 2.6 Release.
2.7	May 2019	Released with the Yocto Project 2.7 Release.
3.0	October 2019	Released with the Yocto Project 3.0 Release.
3.1	April 2020	Released with the Yocto Project 3.1 Release.

Table of Contents

• 1. Board Support Packages (BSP) - Developer’s Guide
  • 1.1. BSP Layers
  • 1.2. Preparing Your Build Host to Work With BSP Layers
  • 1.3. Example Filesystem Layout
    • 1.3.1. License Files
    • 1.3.2. README File
    • 1.3.3. README.sources File
    • 1.3.4. Pre-built User Binaries
    • 1.3.5. Layer Configuration File
    • 1.3.6. Hardware Configuration Options
    • 1.3.7. Miscellaneous BSP-Specific Recipe Files
    • 1.3.8. Display Support Files
    • 1.3.9. Linux Kernel Configuration
  • 1.4. Developing a Board Support Package (BSP)
  • 1.5. Requirements and Recommendations for Released BSPs
    • 1.5.1. Released BSP Requirements
    • 1.5.2. Released BSP Recommendations
  • 1.6. Customizing a Recipe for a BSP
  • 1.7. BSP Licensing Considerations
  • 1.8. Creating a new BSP Layer Using the bitbake-layers Script
    • 1.8.1. BSP Layer Configuration Example
    • 1.8.2. BSP Machine Configuration Example
    • 1.8.3. BSP Kernel Recipe Example