nb/intel/gm45: Don't run graphics init on s3 resume
This assumes ACPI aware OS also have a driver for this particular
hardware, which is the case for at least Linux. This saves ~60ms on S3
resume.
Change-Id: I2dcd399fee8e2d1cd1b70e60e1669a49c7aa8cb4
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35995
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/src/northbridge/intel/gm45/gma.c b/src/northbridge/intel/gm45/gma.c
index a2de7f0f..1e6da69 100644
--- a/src/northbridge/intel/gm45/gma.c
+++ b/src/northbridge/intel/gm45/gma.c
@@ -205,7 +205,7 @@
/* Post VBIOS init */
gma_pm_init_post_vbios(dev, edid_lvds.ascii_string);
- if (CONFIG(MAINBOARD_USE_LIBGFXINIT)) {
+ if (CONFIG(MAINBOARD_USE_LIBGFXINIT) && !acpi_is_wakeup_s3()) {
int vga_disable = (pci_read_config16(dev, D0F0_GGC) & 2) >> 1;
if (vga_disable) {
printk(BIOS_INFO,