[coreboot-gerrit] Change in coreboot[master]: nb/x4x: Add ramstage IGD disable function

[Arthur Heymans (Code Review)]

Hello Patrick Rudolph, Paul Menzel, build bot (Jenkins), Nico Huber,

I'd like you to reexamine a change.  Please visit

    https://review.coreboot.org/18504

to look at the new patch set (#17).

Change subject: nb/x4x: Add ramstage IGD disable function
......................................................................

nb/x4x: Add ramstage IGD disable function

This disables VGA cycles on IGD when an external VGA device is
found. This allows PCI or PCIe devices to be the 'main' VGA device if
found, while the IGD is still available.

TESTED on ga-g41m-es2l: SeaBIOS shows payload on external GPU while
linux (4.10) can use both as a framebuffer simultaneously without any
extra configuration.

Change-Id: I74890918feb0f1ff6b971c4aaa96f1f7b75266ac
Signed-off-by: Arthur Heymans <arthur at aheymans.xyz>
---
M src/northbridge/intel/x4x/gma.c
M src/northbridge/intel/x4x/x4x.h
2 files changed, 12 insertions(+), 0 deletions(-)


  git pull ssh://review.coreboot.org:29418/coreboot refs/changes/04/18504/17
-- 
To view, visit https://review.coreboot.org/18504
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I74890918feb0f1ff6b971c4aaa96f1f7b75266ac
Gerrit-PatchSet: 17
Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-Owner: Arthur Heymans <arthur at aheymans.xyz>
Gerrit-Reviewer: Arthur Heymans <arthur at aheymans.xyz>
Gerrit-Reviewer: Kyösti Mälkki <kyosti.malkki at gmail.com>
Gerrit-Reviewer: Nico Huber <nico.h at gmx.de>
Gerrit-Reviewer: Patrick Rudolph <siro at das-labor.org>
Gerrit-Reviewer: Paul Menzel <paulepanter at users.sourceforge.net>
Gerrit-Reviewer: build bot (Jenkins) <no-reply at coreboot.org>