From bd4a3f8cd9ec4c59ad1d33102958e525a9c8c6ef Mon Sep 17 00:00:00 2001 From: Marshall Dawson Date: Tue, 7 Aug 2018 07:27:57 -0600 Subject: 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 Reviewed-on: https://review.coreboot.org/27923 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel Reviewed-by: Martin Roth --- src/cpu/amd/pi/00660F01/model_15_init.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'src/cpu/amd/pi/00660F01') diff --git a/src/cpu/amd/pi/00660F01/model_15_init.c b/src/cpu/amd/pi/00660F01/model_15_init.c index 0540a72fad..424a6c06ff 100644 --- a/src/cpu/amd/pi/00660F01/model_15_init.c +++ b/src/cpu/amd/pi/00660F01/model_15_init.c @@ -51,6 +51,7 @@ static void model_15_init(struct device *dev) u8 i; msr_t msr; + int num_banks; int msrno; #if IS_ENABLED(CONFIG_LOGICAL_CPUS) u32 siblings; @@ -81,9 +82,11 @@ static void model_15_init(struct device *dev) x86_enable_cache(); /* 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); /* Enable the local CPU APICs */ -- cgit v1.2.3