coreboot/default: Update to 97bc693ab (2024-07-29)

Several patches are now merged upstream and no longer needed
in lbmk, such as the HP EliteBook 8560w patch, and related
patches. Some patches were changed, for example the Dell Latitude
ivb/snb laptops are now variants in coreboot, instead of being
individual ports; now they re-use the same base code.

This this, the corresponding files under config/submodules
have changed, for things like 3rdparty submodules e.g. libgfxinit,
and tarballs e.g. crossgcc.

This is long overdue, and will enable more boards to be added.
This newer revision will be used in the next release, and some
follow-up patches will merge these trees into default:

* coreboot/haswell
* coreboot/dell

Signed-off-by: Leah Rowe <leah@libreboot.org>

1 files changed, 51 insertions, 0 deletions

diff --git a/config/coreboot/default/patches/0036-nb-haswell-Fully-disable-iGPU-when-dGPU-is-used.patch b/config/coreboot/default/patches/0036-nb-haswell-Fully-disable-iGPU-when-dGPU-is-used.patch
new file mode 100644
index 00000000..b5606617
--- /dev/null
+++ b/config/coreboot/default/patches/0036-nb-haswell-Fully-disable-iGPU-when-dGPU-is-used.patch
@@ -0,0 +1,51 @@
+From 4c0f0d139cdc0fbfadf76ee576d69503b81dc9dc Mon Sep 17 00:00:00 2001
+From: Leah Rowe <info@minifree.org>
+Date: Sat, 6 Apr 2024 01:22:47 +0100
+Subject: [PATCH 36/39] nb/haswell: Fully disable iGPU when dGPU is used
+
+My earlier patch disabled decode *and* disabled the iGPU itself, but
+a subsequent revision disabled only VGA decode. Upon revisiting, I
+found that, actually, yes, you also need to disable the iGPU entirely.
+
+Tested on Dell 9020 SFF using broadwell MRC, with both iGPU and dGPU.
+With this patch, the iGPU is completely disabled when you install a
+graphics card, but the iGPU is available to use when no graphics card
+is present.
+
+For more context, see:
+
+Author: Leah Rowe <info@minifree.org>
+Date:   Fri Feb 23 13:33:31 2024 +0000
+
+    nb/haswell: Disable iGPU when dGPU is used
+
+And look at the Gerrit comments:
+
+https://review.coreboot.org/c/coreboot/+/80717/
+
+So, my original submission on change 80717 was actually correct.
+This patch fixes the issue. I tested on iGPU and dGPU, with both
+broadwell and haswell mrc.bin.
+
+Signed-off-by: Leah Rowe <info@minifree.org>
+---
+ src/northbridge/intel/haswell/gma.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/src/northbridge/intel/haswell/gma.c b/src/northbridge/intel/haswell/gma.c
+index f7fad3183d..1b188e92e1 100644
+--- a/src/northbridge/intel/haswell/gma.c
++++ b/src/northbridge/intel/haswell/gma.c
+@@ -466,6 +466,9 @@ static void gma_func0_disable(struct device *dev)
+ {
+ 	/* Disable VGA decode */
+ 	pci_or_config16(pcidev_on_root(0, 0), GGC, 1 << 1);
++
++	/* Required or else the graphics card doesn't work */
++	dev->enabled = 0;
+ }
+ 
+ static struct device_operations gma_func0_ops = {
+-- 
+2.39.2
+