soc/intel/common/cpu: Update COS mask calculation for NEM enhanced mode
Update the COS mask calculation to accomodate the RW data as per SoC
configuration. Currently only one way is allocated for RW data and
configured for non-eviction. For earlier platform this served fine,
and could accomodate a RW data up to 256Kb. Starting TGL and JSL, the
DCACHE_RAM_SIZE is configured for 512Kb, which cannot be mapped to a
single way. Hence update the number of ways to be configured for non-
eviction as per total LLC size.
The total LLC size/ number of ways gives the way size. DCACHE_RAM_SIZE/
way size gives the number of ways that need to be configured for non-
eviction, instead of harcoding it to 1.
TGL uses MSR IA32_CR_SF_QOS_MASK_1(0x1891) and IA32_CR_SF_QOS_MASK_2(0x1892)
as COS mask selection register and hence needs to be progarmmed accordingly.
Also JSL and TGL platforms the COS mask selection is mapped to bit 32:33
of MSR IA32_PQR_ASSOC(0xC8F) and need to be updated in edx(maps 63:32)
before MSR write instead of eax(maps 31:0). This implementation corrects
that as well.
BUG=b:149273819
TEST= Boot waddledoo(JSL), hatch(CML), Volteer(TGL)with NEM enhanced
CAR configuration.
Signed-off-by: Aamir Bohra <aamir.bohra@intel.com>
Change-Id: I54e047161853bfc70516c1d607aa479e68836d04
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43494
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Shreesh Chhabbi <shreesh.chhabbi@intel.corp-partner.google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
diff --git a/src/soc/intel/icelake/Kconfig b/src/soc/intel/icelake/Kconfig
index 1230675..1e66e97 100644
--- a/src/soc/intel/icelake/Kconfig
+++ b/src/soc/intel/icelake/Kconfig
@@ -52,7 +52,6 @@
select SOC_INTEL_COMMON_PCH_BASE
select SOC_INTEL_COMMON_RESET
select SOC_INTEL_COMMON_BLOCK_CAR
- select INTEL_CAR_NEM_ENHANCED
select SSE2
select SUPPORT_CPU_UCODE_IN_CBFS
select TSC_MONOTONIC_TIMER
@@ -61,6 +60,7 @@
select DISPLAY_FSP_VERSION_INFO
select HECI_DISABLE_USING_SMM
select USE_INTEL_FSP_TO_CALL_COREBOOT_PUBLISH_MP_PPI
+ select USE_CAR_NEM_ENHANCED_V1
config DCACHE_RAM_BASE
default 0xfef00000