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From 60cc2c4532f63a40486b7c4e891fb87fb6d4ab7f Mon Sep 17 00:00:00 2001
From: Arthur Heymans <arthur@aheymans.xyz>
Date: Wed, 7 Sep 2016 22:10:57 +0200
Subject: [PATCH] i945/gma.c: generate fake VBT
This generates a fake VBT for the Intel i945 graphic device.
i945 supports both the mobile chipset 945gm (calistoga)
and the desktop chipset 945gc (lakeport),
which is why a VBT with a different id string
needs to be created for each target.
The VBT id string is obtained from the vbios blob in the following way:
"strings vbios.bin | grep VBT".
Change-Id: I8245b12b16a4426efbe1f584d4163fc257231a98
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
---
src/northbridge/intel/i945/gma.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/src/northbridge/intel/i945/gma.c b/src/northbridge/intel/i945/gma.c
index 02caa0a..f0944b9 100644
--- a/src/northbridge/intel/i945/gma.c
+++ b/src/northbridge/intel/i945/gma.c
@@ -433,6 +433,15 @@ static void gma_func0_init(struct device *dev)
iobase, mmiobase, graphics_base);
if (err == 0)
gfx_set_init_done(1);
+ /* Linux relies on VBT for panel info. */
+ if (CONFIG_NORTHBRIDGE_INTEL_SUBTYPE_I945GM) {
+ generate_fake_intel_oprom(&conf->gfx, dev,
+ "$VBT CALISTOGA ");
+ }
+ if (CONFIG_NORTHBRIDGE_INTEL_SUBTYPE_I945GC) {
+ generate_fake_intel_oprom(&conf->gfx, dev,
+ "$VBT LAKEPORT-G ");
+ }
#endif
}
--
2.9.3
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