From bb1af99622e7e4a303f49618a4ecbb02606d1cba Mon Sep 17 00:00:00 2001 From: Patrick Rudolph Date: Sat, 21 Jan 2017 10:43:52 +0100 Subject: nb/intel/gm45/igd: Hide IGD while disabling Hide the IGD to make sure ramstage doesn't detect it. Change-Id: If389016f3bb0c4c2fd0b826914997a87a9137201 Signed-off-by: Patrick Rudolph Reviewed-on: https://review.coreboot.org/18194 Tested-by: build bot (Jenkins) Reviewed-by: Nico Huber --- src/northbridge/intel/gm45/igd.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'src/northbridge/intel/gm45/igd.c') diff --git a/src/northbridge/intel/gm45/igd.c b/src/northbridge/intel/gm45/igd.c index 74572ca72a..1164339c8a 100644 --- a/src/northbridge/intel/gm45/igd.c +++ b/src/northbridge/intel/gm45/igd.c @@ -127,6 +127,11 @@ static void disable_igd(const sysinfo_t *const sysinfo) MCHBAR16(0x119e) = (MCHBAR16(0x119e) & ~(7 << 13)) | (4 << 13); MCHBAR16(0x119e) |= (1 << 12); } + + /* Hide IGD. */ + u32 deven = pci_read_config32(mch_dev, D0F0_DEVEN); + deven &= ~(3 << 3); + pci_write_config32(mch_dev, D0F0_DEVEN, deven); } void init_igd(const sysinfo_t *const sysinfo) -- cgit v1.2.3