Building on top of an existing BSP
A BSP layer adds support for a particular hardware device or family of devices to Yocto. This support usually includes the bootloader, device tree blobs, and additional kernel drivers needed to boot Linux on that specific hardware. A BSP may also include any additional user-space software and peripheral firmware needed to fully enable and utilize all the features of the hardware. By convention, BSP layer names start with the meta- prefix followed by the machine’s name. Locating the best BSP for your target device is the first step toward building a bootable image for it using Yocto.
The OpenEmbedded layer index (https://layers.openembedded.org/layerindex) is the best place to start looking for quality BSPs. Your board’s manufacturer or silicon vendor may also offer BSP layers. The Yocto Project provides a BSP for all variants of Raspberry Pi. You can find the Git repository for that BSP layer and all the other layers endorsed by...
