drivers/ocp/ewl: Add EWL driver for EWL type 3 error handling

Add EWL (Enhanced Warning Log) driver which handles Intel EWL HOB
and prints EWL type 3 primarily associated with MRC training failures.

Change-Id: Ibd5b521bafd457505db4147c5d3fe41364a09045
Signed-off-by: Shelly Chang <Shelly_Chang@wiwynn.com>
Signed-off-by: Johnny Lin <johnny_lin@wiwynn.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69145
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Jonathan Zhang <jonzhang@fb.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/drivers/ocp/ewl/ocp_ewl.h b/src/drivers/ocp/ewl/ocp_ewl.h
new file mode 100644
index 0000000000..38d5286d36
--- /dev/null
+++ b/src/drivers/ocp/ewl/ocp_ewl.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef __OCP_EWL_H
+#define __OCP_EWL_H
+
+#include <soc/soc_util.h>
+
+void get_ewl(void);
+
+#endif