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UPSTREAM: nb/intel/gm45/igd: Hide IGD while disabling

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Hide the IGD to make sure ramstage doesn't detect it.

BUG=none
BRANCH=none
TEST=none

Change-Id: Ibb747e98c2851dc5a8dd744e6aa2c1fc04c3789c
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: bb1af99622
Original-Change-Id: If389016f3bb0c4c2fd0b826914997a87a9137201
Original-Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Original-Reviewed-on: https://review.coreboot.org/18194
Original-Tested-by: build bot (Jenkins)
Original-Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://chromium-review.googlesource.com/438053
This commit is contained in:
Patrick Rudolph 2017-01-21 10:43:52 +01:00 • committed by chrome-bot
commit 376c0aea6a
1 changed files with 5 additions and 0 deletions
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5
src/northbridge/intel/gm45/igd.c
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@ -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)