From 2eaa0d49e10e9c2314b0f61400a481447d1df892 Mon Sep 17 00:00:00 2001 From: Dave Frodin Date: Thu, 23 Apr 2015 06:04:46 -0600 Subject: 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 Reviewed-on: http://review.coreboot.org/9972 Reviewed-by: Marc Jones Tested-by: build bot (Jenkins) --- src/soc/intel/broadwell/acpi/systemagent.asl | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'src/soc/intel/broadwell/acpi') diff --git a/src/soc/intel/broadwell/acpi/systemagent.asl b/src/soc/intel/broadwell/acpi/systemagent.asl index 8fcd0b77ed..c2049ea2e3 100644 --- a/src/soc/intel/broadwell/acpi/systemagent.asl +++ b/src/soc/intel/broadwell/acpi/systemagent.asl @@ -147,11 +147,11 @@ Method (_CRS, 0, Serialized) 0x00000000, 0x000f0000, 0x000fffff, 0x00000000, 0x00010000,,, FSEG) - // PCI Memory Region (Top of memory-0xfebfffff) + // PCI Memory Region (Top of memory-CONFIG_MMCONF_BASE_ADDRESS) DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, - 0x00000000, 0x00000000, 0xfebfffff, 0x00000000, - 0xfec00000,,, PM01) + 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000,,, PM01) // TPM Area (0xfed40000-0xfed44fff) DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, @@ -177,6 +177,7 @@ Method (_CRS, 0, Serialized) } Store (Local0, PMIN) + Store (Subtract(CONFIG_MMCONF_BASE_ADDRESS, 1), PMAX) Add(Subtract(PMAX, PMIN), 1, PLEN) Return (MCRS) -- cgit v1.2.3