Note: The raspberrypi3 machines include support for Raspberry Pi 3B+.
This layer generally provides support for machines that are targetting a single Raspberry Pi board (or a very few subsets of them). This is so that the build infrastructure can tune and tweak the configuration with the flexibility to optimise for both runtime performance and disk storage.
For usecases where compatibility of more boards is required, the layer provides machines that are tagetting a wider support of Raspberry Pi boards.
This machine targets support for all the ARMv7-based Raspberry Pi boards. It will pull in the firmware and deploy the kernel image and kernel modules for all the relevant boards.
This machine targets support for all the ARMv8-based Raspberry Pi boards. It will pull in the firmware and deploy the kernel image and kernel modules for all the relevant boards.
For other uses it's recommended to base images on core-image-minimal or core-image-base as appropriate.
Be aware that the WiFi and Bluetooth firmware for the supported boards is not available in the base version of linux-firmware from OE-Core (poky). The files are added from Raspbian repositories in this layer's bbappends to that recipe. All machines define MACHINE_EXTRA_RRECOMMENDS to include the required wireless firmware; raspberrypi3 supports 3, 3B, and 3B+ and so include multiple firmware packages.