Hello,

Using the instructions in the old Wiki page [1] I have used the UEFI method and UEFI tool to extract the video BIOS from the standard binary that comes with the board.

I have followed the layout of some of the other Kconfig files in the mainboard directory and added the following to my boards Kconfig:

config BOARD_SPECIFIC_OPTIONS
     ...
     select VGA_BIOS
     ...

config VGA_BIOS_ID
     string
     default "8086,0406"

config VGA_BIOS_FILE
     string
     default "pci8086,0406.rom"

When I try to build with that I get an error:

make: *** No rule to make target 'pci8086,0406.rom', needed by 'build/coreboot.pre'.  Stop.

The other mainboards that use this methodology all seem to have “select GFX_GMA_PANEL_1_ON_LVDS” but as my display is connected directly to the eDP port I added  “select GFX_GMA_PANEL_1_ON_EDP”.  This in turn appears to need “select GFX_GMA”.  Now when I try to build I get:

warning: (BOARD_SPECIFIC_OPTIONS) selects GFX_GMA which has unmet direct dependencies ((NORTHBRIDGE_INTEL_GM45 || NORTHBRIDGE_INTEL_X4X || NORTHBRIDGE_INTEL_IRONLAKE || NORTHBRIDGE_INTEL_SANDYBRIDGE || NORTHBRIDGE_INTEL_HASWELL || SOC_INTEL_BROADWELL || SOC_INTEL_SKYLAKE || SOC_INTEL_APOLLOLAKE || SOC_INTEL_KABYLAKE || SOC_INTEL_COFFEELAKE || SOC_INTEL_WHISKEYLAKE) && (MAINBOARD_USE_LIBGFXINIT || INTEL_GMA_LIBGFXINIT_EDID))

The board I am working with uses Comet Lake so I have "select SOC_INTEL_COMETLAKE” in the board specific options.

Am I going about this the wrong way or does the depends on list for GFX_GMA in src/drivers/intel/gma/Kconfig need SOC_INTEL_COMETLAKE adding to the list?

-Andy.

[1] - https://www.coreboot.org/VGA_support
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