mb/ocp/tiogapass: Configure IPMI FRB2 watchdog timer via VPD variables

Add VPD variables for enabling/disabling FRB2 watchdog timer and setting
the timer countdown value in romstage. By default it would start the timer
and trigger hard reset when it's expired. The timer is expected to be
stopped later by payload or OS.

Add RO_VPD and RW_VPD sections.

Tested on OCP Tioga Pass.

Change-Id: I53b69c3c5d22c022130fd812ef26097898d913d0
Signed-off-by: Johnny Lin <johnny_lin@wiwynn.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39690
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/src/mainboard/ocp/tiogapass/vpd.h b/src/mainboard/ocp/tiogapass/vpd.h
new file mode 100644
index 0000000000..63a92f68b2
--- /dev/null
+++ b/src/mainboard/ocp/tiogapass/vpd.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef TIOGAPASS_VPD_H
+#define TIOGAPASS_VPD_H
+
+/* VPD variable for enabling/disabling FRB2 timer. */
+#define FRB2_TIMER "frb2_timer"
+/* VPD variable for setting FRB2 timer countdown value. */
+#define FRB2_COUNTDOWN "frb2_countdown"
+#define VPD_LEN 10
+/* Default countdown is 15 minutes. */
+#define DEFAULT_COUNTDOWN 9000
+
+#endif /* TIOGAPASS_VPD_H */