You can find these files in the BSP Layer at:
meta-bsp_name
/binary/bootable_images
This optional area contains useful pre-built kernels and user-space filesystem images appropriate to the target system. This directory typically contains graphical (e.g. Sato) and minimal live images when the BSP tarball has been created and made available in the Yocto Project website. You can use these kernels and images to get a system running and quickly get started on development tasks.
The exact types of binaries present are highly hardware-dependent.
However, a README
file should be present in the BSP Layer that explains how to use
the kernels and images with the target hardware.
If pre-built binaries are present, source code to meet licensing requirements must also
exist in some form.