Initial commit

meta-ampere/meta-mitchell/recipes-ampere/host/ampere-sysfw-hang-handler/ampere-sysfw-hang-handler.service

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+[Unit]
+Description=Ampere System Firmware Hang Handler
+After=obmc-host-already-on@0.target
+BindTo=obmc-host-already-on@0.target
+ConditionPathExists=!/var/ampere/sysfw-hang-disable
+
+[Service]
+Type=simple
+ExecStart=/usr/sbin/ampere_sysfw_hang_handler.sh
+SyslogIdentifier=ampere_sysfw_hang

meta-ampere/meta-mitchell/recipes-ampere/host/ampere-sysfw-hang-handler/ampere_sysfw_hang_handler.sh

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+#!/bin/bash
+
+# shellcheck source=meta-ampere/meta-mitchell/recipes-ampere/platform/ampere-platform-init/gpio-lib.sh
+source /usr/sbin/gpio-lib.sh
+
+# Do event trigger
+function sel_trigger()
+{
+	echo "Error: system firmware hang, trigger sel"
+	ampere_add_redfishevent.sh OpenBMC.0.1.SystemPowerOnFailed.Critical
+}
+
+# Do reset the system
+function reset_system()
+{
+	echo "Error: system firmware hang, reset the system"
+	ipmitool chassis power reset
+}
+
+s0_last_hb_state=0
+cnt=-1
+while true
+do
+    # Monitor heart beat GPIO value, GPIOF4 for Socket 0
+    s0_hb_state=$(gpio_name_get s0-heartbeat)
+    if [ "$s0_last_hb_state" != "$s0_hb_state" ]; then
+        cnt=0
+    else
+        cnt=$((cnt + 1))
+    fi
+
+    if [ "$cnt" -ge 6 ]; then
+        echo "Error: system firmware hang"
+        sel_trigger
+        reset_system
+        exit 0
+    fi
+    s0_last_hb_state="$s0_hb_state"
+    sleep 0.5
+done
+
+exit 0