Initial commit

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

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+SUMMARY = "Ampere Computing LLC System Firmware Hang Handler"
+DESCRIPTION = "A host control implementation suitable for Ampere Computing LLC's systems"
+PR = "r1"
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10"
+
+inherit systemd
+inherit obmc-phosphor-systemd
+
+RDEPENDS:${PN} = "bash"
+FILESEXTRAPATHS:append := "${THISDIR}/${PN}:"
+
+SYSTEMD_PACKAGES = "${PN}"
+
+SRC_URI = " \
+           file://ampere-sysfw-hang-handler.service \
+           file://ampere_sysfw_hang_handler.sh \
+          "
+
+SYSTEMD_SERVICE:${PN} += "ampere-sysfw-hang-handler.service"
+
+SYSFW_HANG_TGT = "ampere-sysfw-hang-handler.service"
+SYSFW_HANG_INSTMPL = "ampere-sysfw-hang-handler.service"
+AMPER_HOST_RUNNING = "obmc-host-already-on@{0}.target"
+SYSFW_HANG_TARGET_FMT = "../${SYSFW_HANG_TGT}:${AMPER_HOST_RUNNING}.wants/${SYSFW_HANG_INSTMPL}"
+SYSTEMD_LINK:${PN} += "${@compose_list_zip(d, 'SYSFW_HANG_TARGET_FMT', 'OBMC_HOST_INSTANCES')}"
+
+do_install() {
+    install -d ${D}/usr/sbin
+    install -m 0755 ${WORKDIR}/ampere_sysfw_hang_handler.sh ${D}/${sbindir}/
+}

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