You can find these files in the BSP Layer at:
meta-bsp_name
/recipes-bsp/*
This optional directory contains miscellaneous recipe files for the BSP.
Most notably would be the formfactor files.
For example, in the Crown Bay BSP there is the
formfactor_0.0.bbappend
file, which is an
append file used to augment the recipe that starts the build.
Furthermore, there are machine-specific settings used during the
build that are defined by the machconfig
file.
In the Crown Bay example, two machconfig
files
exist: one that supports the Intel® Embedded Media and Graphics
Driver (Intel® EMGD) and one that does not:
meta-crownbay/recipes-bsp/formfactor/formfactor/crownbay/machconfig meta-crownbay/recipes-bsp/formfactor/formfactor/crownbay-noemgd/machconfig meta-crownbay/recipes-bsp/formfactor/formfactor_0.0.bbappend
If a BSP does not have a formfactor entry, defaults are established according to
the formfactor configuration file that is installed by the main
formfactor recipe
meta/recipes-bsp/formfactor/formfactor_0.0.bb
,
which is found in the
Source Directory.