diff options
| -rw-r--r-- | src/northbridge/intel/sandybridge/acpi/hostbridge.asl | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/northbridge/intel/sandybridge/acpi/hostbridge.asl b/src/northbridge/intel/sandybridge/acpi/hostbridge.asl index c8efc982f9..0f70f8c9d5 100644 --- a/src/northbridge/intel/sandybridge/acpi/hostbridge.asl +++ b/src/northbridge/intel/sandybridge/acpi/hostbridge.asl @@ -342,13 +342,17 @@ Method (_CRS, 0, Serialized) // Fix up PCI memory region // Start with Top of Lower Usable DRAM - Local0 = ^MCHC.TLUD + // Lower 20 bits of TOLUD register need to be masked since they contain lock and + // reserved bits. + Local0 = ^MCHC.TLUD & (0xfff << 20) Local1 = ^MCHC.MEBA // Check if ME base is equal If (Local0 == Local1) { // Use Top Of Memory instead - Local0 = ^MCHC.TOM + // Lower 20 bits of TOM register need to be masked since they contain lock and + // reserved bits. + Local0 = ^MCHC.TOM & (0x7ffff << 20) } PMIN = Local0 |