soc/amd/cezanne: add basic MCA support

Currently the MCA support for Cezanne only clears the MCA status
registers. The MCA error handling and BERT table generation will be
added in subsequent patches.

Change-Id: Ib9b5174186c28c8c82f57ffd8936c8dad4e63c5b
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56262
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>

1 files changed, 14 insertions, 0 deletions

diff --git a/src/soc/amd/cezanne/mca.c b/src/soc/amd/cezanne/mca.c
new file mode 100644
index 0000000000..7160256539
--- /dev/null
+++ b/src/soc/amd/cezanne/mca.c
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <cpu/x86/msr.h>
+#include <soc/cpu.h>
+
+/* Check the Machine Check Architecture Extension registers */
+void check_mca(void)
+{
+	/* TODO: Implement MCAX register checking and BERT table generation. */
+
+	/* mca_clear_status uses the MCA registers and not the MCAX ones. Since they are
+	   aliases, we can use either set of registers. */
+	mca_clear_status();
+}