soc/amd/*/mca: use mca_get_bank_count()

Use the common mca_get_bank_count function instead of open-coding the
functionality to get the MCA bank number. Also re-type the num_banks
variable from signed in to unsigned int, since the number of MCA bank is
always positive.

Change-Id: I126767cf9ad468cab6d6537dd73e9b2dc377b5c4
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56185
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/src/soc/amd/picasso/mca.c b/src/soc/amd/picasso/mca.c
index 12d4cccbc8ec..acb248d2f491 100644
--- a/src/soc/amd/picasso/mca.c
+++ b/src/soc/amd/picasso/mca.c
@@ -152,12 +152,10 @@ static const char *const mca_bank_name[] = {
 void check_mca(void)
 {
 	int i;
-	msr_t cap;
 	struct mca_bank mci;
-	int num_banks;
+	unsigned int num_banks;
 
-	cap = rdmsr(IA32_MCG_CAP);
-	num_banks = cap.lo & MCA_BANKS_MASK;
+	num_banks = mca_get_bank_count();
 
 	for (i = 0 ; i < num_banks ; i++) {
 		mci.sts = rdmsr(MCAX_STATUS_MSR(i));