diff options
| author | Nico Huber <nico.huber@secunet.com> | 2013-05-14 11:02:43 +0200 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2013-05-22 17:59:10 +0200 |
| commit | 0da92863a754828eb807f1a15927f0dc288a1788 (patch) | |
| tree | 65d6c31ee5f7989fd82633c3743e5d8c8f525c42 /src/northbridge | |
| parent | 0f43af2ebb0d34ef6106d39d8614590253d5f4a9 (diff) | |
intel/gm45: Fix interpretation of VT-d disable bit
When configuring the GTT size for the integrated graphics, the state
of VT-d was read wrong. Bit 48 of CAPID0 (D0F0) is set when VT-d is
_disabled_.
In the log of a VT-d enabled roda/rk9 we have now:
[...]
VT-d enabled
[...]
IGD decoded, subtracting 32M UMA and 4M GTT
[...]
Without this patch, only 2M GTT were reported.
Change-Id: I87582c18f4769c2a05be86936d865c0d1fb35966
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/3252
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/northbridge')
| -rw-r--r-- | src/northbridge/intel/gm45/igd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/northbridge/intel/gm45/igd.c b/src/northbridge/intel/gm45/igd.c index d54ee41f83..0a8f21e586 100644 --- a/src/northbridge/intel/gm45/igd.c +++ b/src/northbridge/intel/gm45/igd.c @@ -67,7 +67,7 @@ static void enable_igd(const sysinfo_t *const sysinfo, const int no_peg) reg16 = pci_read_config16(mch_dev, D0F0_GGC); reg16 &= 0xf00f; reg16 |= 0x0350; - if (capid & (1 << (48 - 32))) + if (!(capid & (1 << (48 - 32)))) reg16 |= 0x0800; pci_write_config16(mch_dev, D0F0_GGC, reg16); |