intel: Correct MMIO related ACPI table settings
Several of the intel platforms define the region reserved
for PCI memory resources in a location where it overlaps
with the MMIO (MCFG) region.
Using the memory map from mohon_peak as an example:
0. 0000000000000000-0000000000000fff: CONFIGURATION TABLES
1. 0000000000001000-000000000009ffff: RAM
2. 00000000000a0000-00000000000fffff: RESERVED
3. 0000000000100000-000000007fbcffff: RAM
4. 000000007fbd0000-000000007fbfffff: CONFIGURATION TABLES
5. 000000007fc00000-000000007fdfffff: RESERVED
6. 00000000e0000000-00000000efffffff: RESERVED
7. 00000000fee00000-00000000fee00fff: RESERVED
8. 0000000100000000-000000017fffffff: RAM
The ACPI table describing the space set aside for PCI memory
(not to be confused with the MMIO config space) is defined
as the region from BMBOUND (the top of DRAM below 4GB) to
a hardcoded value of 0xfebfffff. That region would overlap
the MMIO region at 0xe0000000-0xefffffff. For rangeley
the upper bound of the PCI memory space should be set
to 0xe0000000 - 1.
The MCFG regions for several of the affected chipsets are:
rangeley 0xe0000000-0xefffffff
baytrail 0xe0000000-0xefffffff
haswell 0xf0000000-0xf3ffffff
sandybridge 0xf8000000-0xfbffffff
TEST = intel/mohonpeak and intel/bayleybay.
Change-Id: Ic188a4f575494f04930dea4d0aaaeaad95df9f90
Signed-off-by: Dave Frodin <dave.frodin@se-eng.com>
Reviewed-on: http://review.coreboot.org/9972
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
Tested-by: build bot (Jenkins)
diff --git a/src/soc/intel/baytrail/acpi/southcluster.asl b/src/soc/intel/baytrail/acpi/southcluster.asl
index 47151a3..9092562 100644
--- a/src/soc/intel/baytrail/acpi/southcluster.asl
+++ b/src/soc/intel/baytrail/acpi/southcluster.asl
@@ -158,11 +158,11 @@
0x00000000, 0x000f0000, 0x000fffff, 0x00000000,
0x00010000,,, FSEG)
- // PCI Memory Region (Top of memory-0xfeafffff)
+ // PCI Memory Region (Top of memory-CONFIG_MMCONF_BASE_ADDRESS)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
- 0x00000000, 0xfea00000, 0xfeafffff, 0x00000000,
- 0x00100000,,, PMEM)
+ 0x00000000, 0x00000000, 0x00000000, 0x00000000,
+ 0x00000000,,, PMEM)
// TPM Area (0xfed40000-0xfed44fff)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
@@ -178,6 +178,7 @@
// TOLM is BMBOUND accessible from IOSF so is saved in NVS
Store (\TOLM, PMIN)
+ Store (Subtract(CONFIG_MMCONF_BASE_ADDRESS, 1), PMAX)
Add (Subtract (PMAX, PMIN), 1, PLEN)
Return (MCRS)