diff options
Diffstat (limited to 'src/northbridge/intel/sandybridge/northbridge.c')
| -rw-r--r-- | src/northbridge/intel/sandybridge/northbridge.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/northbridge/intel/sandybridge/northbridge.c b/src/northbridge/intel/sandybridge/northbridge.c index 09830de102..c718353b8d 100644 --- a/src/northbridge/intel/sandybridge/northbridge.c +++ b/src/northbridge/intel/sandybridge/northbridge.c @@ -127,6 +127,13 @@ static void add_fixed_resources(struct device *dev, int index) /* Required for SandyBridge sighting 3715511 */ bad_ram_resource(dev, index++, 0x20000000 >> 10, 0x00200000 >> 10); bad_ram_resource(dev, index++, 0x40000000 >> 10, 0x00200000 >> 10); + + /* Reserve IOMMU BARs */ + const u32 capid0_a = pci_read_config32(dev, 0xe4); + if (!(capid0_a & (1 << 23))) { + mmio_resource(dev, index++, IOMMU_BASE1 >> 10, 4); + mmio_resource(dev, index++, IOMMU_BASE2 >> 10, 4); + } } static void pci_domain_set_resources(device_t dev) |