Patch Set 3:
Is this for mainboards that have both integrated and discrete
graphics onboard? or only discrete graphics?
Very nice question Nico, i was about to come to this disucssion.
We are looking for two mainboard design
1. only discrete GFX over PCIE (no IGD)=> This i'm could able to achieve easily using MAINBOARD_HAS_DGPU_VGA_INIT and MAINBOARD_NO_FSP_GOP Kconfig select from mainboard.
2. Both onboard (IGD) and discrete GFX (DGPU) and based on some switch change the display dynamically => This is problem at present as RUN_FSP_GOP and VGA_ROM_RUN both are part of choice option hence couldn't able to select both from mainboard. Ideally for this type of mainboard design, we need to have both RUN_FSP_GOP and VGA_ROM_RUN enable in Kconfig and coreboot decide based on switch position if like to call FSP for IGD display or load/execute VGA OpROM for DGPU init. Right now, i'm commenting choice option in my local repo and selecting both Kconfig to make this dynamic display possible.
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