diff options
| author | Aaron Durbin <adurbin@chromium.org> | 2013-01-12 01:07:28 -0600 |
|---|---|---|
| committer | Ronald G. Minnich <rminnich@gmail.com> | 2013-03-18 17:09:01 +0100 |
| commit | 24614af9b85bc615b0d9af3f37fa393de039c9f8 (patch) | |
| tree | 512445275e7bb802ea188fb895a2f347c476ed7e /src/cpu | |
| parent | a416bfecedb7d55cf3c631d230e3500b314fc880 (diff) | |
haswell: Clear correct number of MCA banks
The configure_mca() function was hard coding the number of
banks the cpu supported. Query this dynamically so that it
no longer clears only 7 banks.
Change-Id: I33fce8fadc0facd1016b3295faaf3ae90e490a71
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2745
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/cpu')
| -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); } |