[coreboot-gerrit] Change in coreboot[master]: nb/intel/sandybridge/acpi: Fix MMCONF size computation

[Patrick Rudolph (Code Review)]

Patrick Rudolph has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/38830 )

Change subject: nb/intel/sandybridge/acpi: Fix MMCONF size computation
......................................................................

nb/intel/sandybridge/acpi: Fix MMCONF size computation

Calculate the correct MMCONF size, which was only correct for
256MiB, but not for smaller values.

Change-Id: I986681126637c28f6442ab7c34acea5bb58ea3d2
Signed-off-by: Patrick Rudolph 
---
M src/northbridge/intel/sandybridge/acpi/sandybridge.asl
1 file changed, 6 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/30/38830/1

diff --git a/src/northbridge/intel/sandybridge/acpi/sandybridge.asl b/src/northbridge/intel/sandybridge/acpi/sandybridge.asl
index 3181fc0..cf17df0 100644
--- a/src/northbridge/intel/sandybridge/acpi/sandybridge.asl
+++ b/src/northbridge/intel/sandybridge/acpi/sandybridge.asl
@@ -62,7 +62,12 @@
    	XBR0 = _SB.PCI0.MCHC.PXBR << 26

CreateDwordField (PDRS, ^PCIX._LEN, XSZ0)
-		XSZ0 = 0x10000000 << _SB.PCI0.MCHC.PXSZ
+		If (_SB.PCI0.MCHC.PXSZ == 0) {
+			XSZ0 = 0x10000000
+		}
+		If (_SB.PCI0.MCHC.PXSZ == 1) {
+			XSZ0 = 0x8000000
+		}

Return(PDRS)
    }