Change in coreboot[master]: soc/amd/stoneyridge/mca: implement and use mca_has_expected_bank_count

[Felix Held (Code Review)]

Felix Held has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/56311 )

Change subject: soc/amd/stoneyridge/mca: implement and use mca_has_expected_bank_count
......................................................................

soc/amd/stoneyridge/mca: implement and use mca_has_expected_bank_count

This aligns the mca_check_all_banks implementation in the common mca.c
with the one in the common mcax.c file. Do the MCA bank count check
before the !is_warm_reset() check, so that a mismatch also gets printed
on the cold boot path.

Change-Id: Idbd3e9ce9c7483f84f87adab7adac47335cd59aa
Signed-off-by: Felix Held 
---
M src/soc/amd/common/block/cpu/mca/mca.c
M src/soc/amd/stoneyridge/mca.c
2 files changed, 9 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/11/56311/1

diff --git a/src/soc/amd/common/block/cpu/mca/mca.c b/src/soc/amd/common/block/cpu/mca/mca.c
index 2d91894..b5fd6a2 100644
--- a/src/soc/amd/common/block/cpu/mca/mca.c
+++ b/src/soc/amd/common/block/cpu/mca/mca.c
@@ -33,6 +33,9 @@
    struct mca_bank_status mci;
    const unsigned int num_banks = mca_get_bank_count();

+	if (!mca_has_expected_bank_count())
+		printk(BIOS_WARNING, "CPU has an unexpected number of MCA banks!\n");
+
    if (!is_warm_reset())
    	return;

diff --git a/src/soc/amd/stoneyridge/mca.c b/src/soc/amd/stoneyridge/mca.c
index 240e75d..7ca16a8 100644
--- a/src/soc/amd/stoneyridge/mca.c
+++ b/src/soc/amd/stoneyridge/mca.c
@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */

#include <amdblocks/mca.h>
+#include <cpu/x86/msr.h>
 #include <types.h>

static const char *const mca_bank_name[] = {
@@ -15,6 +16,11 @@
    [6] = "Floating point unit"
 };

+bool mca_has_expected_bank_count(void)
+{
+	return ARRAY_SIZE(mca_bank_name) == mca_get_bank_count();
+}
+
 bool mca_is_valid_bank(unsigned int bank)
 {
    return (bank < ARRAY_SIZE(mca_bank_name) && mca_bank_name[bank] != NULL);