5.1.1. Layers

The Source Directory contains both general layers and BSP layers right out of the box. You can easily identify layers that ship with a Yocto Project release in the Source Directory by their folder names. Folders that are layers begin with the string meta.

Note

It is not a requirement that a layer begins with the string meta.

For example, when you set up the Source Directory structure, you will see several layers: meta, meta-hob, meta-skeleton, meta-yocto, and meta-yocto-bsp. Each of these folders is a layer.

Furthermore, if you set up a local copy of the meta-intel Git repository and then explore the folder of that general layer, you will discover many BSP layers inside. For more information on BSP layers, see the "BSP Layers" section in the Yocto Project Board Support Package (BSP) Developer's Guide.