diff options
| -rw-r--r-- | src/cpu/intel/haswell/haswell_init.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/cpu/intel/haswell/haswell_init.c b/src/cpu/intel/haswell/haswell_init.c index 762b7e81a9..45c1a25bc0 100644 --- a/src/cpu/intel/haswell/haswell_init.c +++ b/src/cpu/intel/haswell/haswell_init.c @@ -424,11 +424,17 @@ static void set_energy_perf_bias(u8 policy) static void configure_mca(void) { msr_t msr; + const unsigned int mcg_cap_msr = 0x179; int i; + int num_banks; + msr = rdmsr(mcg_cap_msr); + num_banks = msr.lo & 0xff; msr.lo = msr.hi = 0; - /* This should only be done on a cold boot */ - for (i = 0; i < 7; i++) + /* TODO(adurbin): This should only be done on a cold boot. Also, some + * of these banks are core vs package scope. For now every CPU clears + * every bank. */ + for (i = 0; i < num_banks; i++) wrmsr(IA32_MC0_STATUS + (i * 4), msr); } |