cpu/amd: Correct number of MCA banks cleared
Use the value discovered in the MCG_CAP[Count] for the number of MCA
status registers to clear. The generations should have the following
number of banks:
* Family 10h: 6 banks
* Family 12h: 6
* Family 14h: 6
* Family 15h: 7
* Family 16h: 6
Change-Id: I0fc6d127a200b10fd484e051d84353cc61b27a41
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/27923
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/soc/amd/stoneyridge/cpu.c b/src/soc/amd/stoneyridge/cpu.c
index 6289174..7fff120 100644
--- a/src/soc/amd/stoneyridge/cpu.c
+++ b/src/soc/amd/stoneyridge/cpu.c
@@ -121,11 +121,14 @@
int i;
msr_t msr;
+ int num_banks;
/* zero the machine check error status registers */
+ msr = rdmsr(MCG_CAP);
+ num_banks = msr.lo & MCA_BANKS_MASK;
msr.lo = 0;
msr.hi = 0;
- for (i = 0 ; i < 6 ; i++)
+ for (i = 0 ; i < num_banks ; i++)
wrmsr(MC0_STATUS + (i * 4), msr);
setup_lapic();