coreboot-kgpe-d16/Documentation/soc
Christian Walter b2f8ce7591 soc/intel/cannonlake: Steal no memory for disabled IGD
Set IgdDvmt50PreAlloc to zero if InternalGfx is disabled. It's 'correct'
to do it like this, otherwise the FSP would always allocate memory for
the IGD even if it is disabled. In addition the FSP enables the graphics
panel power even if no IGD is present which leads to a crashing FSP.
Thus, if no IGD is present we switch off the panel via UPDs.

Refer to this issue on IntelFSP for details:
https://github.com/IntelFsp/FSP/issues/49

Tested on:
* CFL platform with IGD
* CFL platform without IGD

Change-Id: I6f9e0f9855224614471d8ed23bf2a9786386ddca
Signed-off-by: Christian Walter <christian.walter@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39454
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Nico Huber <nico.h@gmx.de>
2020-04-09 21:49:01 +00:00
..
amd Documentation: soc/amd/psp: Use real table markup 2020-02-19 12:10:22 +00:00
cavium
intel soc/intel/cannonlake: Steal no memory for disabled IGD 2020-04-09 21:49:01 +00:00
qualcomm sc7180: Provide initial SoC support 2019-10-21 09:06:55 +00:00
index.md sc7180: Provide initial SoC support 2019-10-21 09:06:55 +00:00