[coreboot-gerrit] Change in coreboot[master]: intel/common/block: Add API to configure MCA

[Pratikkumar V Prajapati (Code Review)]

Pratikkumar V Prajapati has uploaded this change for review. ( https://review.coreboot.org/21239

Change subject: intel/common/block: Add API to configure MCA
......................................................................

intel/common/block: Add API to configure MCA

Add mca_configure() API to configure Intel Machine Check
Architecture (MCA).

Change-Id: I5e88c7527ce350824e48892caa978b2b78f1de20
Signed-off-by: Pratik Prajapati 
---
M src/soc/intel/common/block/cpu/cpulib.c
M src/soc/intel/common/block/include/intelblocks/cpulib.h
2 files changed, 21 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/39/21239/1

diff --git a/src/soc/intel/common/block/cpu/cpulib.c b/src/soc/intel/common/block/cpu/cpulib.c
index 2272e69..0d6dacc 100644
--- a/src/soc/intel/common/block/cpu/cpulib.c
+++ b/src/soc/intel/common/block/cpu/cpulib.c
@@ -296,3 +296,21 @@
    msr = rdmsr(MSR_TURBO_RATIO_LIMIT);
    return msr.lo & 0xff;
 }
+
+void mca_configure(void)
+{
+	msr_t msr;
+	int i;
+	int num_banks;
+
+	msr = rdmsr(IA32_MCG_CAP);
+	num_banks = msr.lo & 0xff;
+	msr.lo = msr.hi = 0;
+	for (i = 0; i < num_banks; i++) {
+		/* Clear the machine check status */
+		wrmsr(IA32_MC0_STATUS + (i * 4), msr);
+		/* Initialize machine checks */
+		wrmsr(IA32_MC0_CTL + i * 4,
+			(msr_t) {.lo = 0xffffffff, .hi = 0xffffffff});
+	}
+}
diff --git a/src/soc/intel/common/block/include/intelblocks/cpulib.h b/src/soc/intel/common/block/include/intelblocks/cpulib.h
index 3d40a92..551d89f 100644
--- a/src/soc/intel/common/block/include/intelblocks/cpulib.h
+++ b/src/soc/intel/common/block/include/intelblocks/cpulib.h
@@ -156,4 +156,7 @@
  */
 uint32_t cpu_get_max_turbo_ratio(void);

+/* Configure Machine Check Architecture support */
+void mca_configure(void)
+
 #endif	/* SOC_INTEL_COMMON_BLOCK_CPULIB_H */