[XS] Change in coreboot[main]: soc/intel/common/block/acpi: exclude DMI fixed memory range if no DMI

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/84349?usp=email )

Change subject: soc/intel/common/block/acpi: exclude DMI fixed memory range if no DMI
......................................................................

soc/intel/common/block/acpi: exclude DMI fixed memory range if no DMI

In newer SOC,  such as PTL, there is no DMI. Exclude DMI memory range in
northbridge.asl if DMI_BASE_SIZE is '0'

BUG=b:348678529
TEST=Build CB with DMI_BASE_SIZE set to '0' in the SOC directory. Boot
to OS and check ACPI PDRC device from the ACPI DSDT table. There should
not have an entry for DMI in its _CRS method.

Verified on Intel® Simics® Pre Silicon Simulation platform
     for PTL using google/fatcat mainboard.

Signed-off-by: Cliff Huang 
Change-Id: I971af2eb214b5940fa09d9dc0f9717bb5f0dfb4d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84349
Reviewed-by: Subrata Banik 
Tested-by: build bot (Jenkins) 
---
M src/soc/intel/common/block/acpi/acpi/northbridge.asl
1 file changed, 4 insertions(+), 4 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Subrata Banik: Looks good to me, approved

diff --git a/src/soc/intel/common/block/acpi/acpi/northbridge.asl b/src/soc/intel/common/block/acpi/acpi/northbridge.asl
index 51b0e23..dd176e6 100644
--- a/src/soc/intel/common/block/acpi/acpi/northbridge.asl
+++ b/src/soc/intel/common/block/acpi/acpi/northbridge.asl
@@ -291,12 +291,12 @@
    		 * B0:D0:F0:Reg.48h
    		 */
    		Memory32Fixed (ReadWrite, 0, MCH_BASE_SIZE, MCHB)
-
+#if DMI_BASE_SIZE
    		/* DMI BAR _BAS will be updated in _CRS below according to
    		 * B0:D0:F0:Reg.68h
    		 */
    		Memory32Fixed (ReadWrite, 0, DMI_BASE_SIZE, DMIB)
-
+#endif
    		/* EP BAR _BAS will be updated in _CRS below according to
    		 * B0:D0:F0:Reg.40h
    		 */
@@ -322,10 +322,10 @@

CreateDwordField (BUF0, MCHB._BAS, MBR0)
    	MBR0 = _SB.PCI0.GMHB ()
-
+#if DMI_BASE_SIZE
    	CreateDwordField (BUF0, DMIB._BAS, DBR0)
    	DBR0 = _SB.PCI0.GDMB ()
-
+#endif
    	CreateDwordField (BUF0, EGPB._BAS, EBR0)
    	EBR0 = _SB.PCI0.GEPB ()