You can add layers to the
PetaLinux project. The upstream layers for the Langdale version of Yocto can be found at
Layers.
The following steps demonstrate how to add the meta-my layer into the PetaLinux project.
- Copy or create a layer in <proj_root>/project-spec/meta-mylayer.
- Run .
- Enter the following:
${PROOT}/project-spec/meta-mylayer - Save and exit.
- Verify by viewing the file in <proj_root>/build/conf/bblayers.conf.
Note: The 2024.2 release of the
PetaLinux tool is on the Langdale baseline. Choose the layers/recipes from the
Langdale branch only. Some of the layers/recipes might not be compatible with the
current architecture. You are responsible for all additional layers/recipes.
Note: You can also add a layer
that is outside your project; such layers can be shared across projects. Ensure that
the added layer has <layer>/conf/layer.conf; otherwise, it causes build
errors.
Important: If you want
to change the layer priority, you can update ${PROOT}/project-spec/meta-mylayer/conf/layer.conf to set
BBFILE_PRIORITY_meta-mylayer = 7 (0 to 99, higher values have
higher priority).Note: By default, the meta-user layer in the
PetaLinux project has a PRIORITY of 7. A PRIORITY level that is equivalent or higher
than meta-user can be used to override or use the meta-user changes before the
custom layer changes. For more information, see Support.