meta-facebook: harma: add SMC event log for health-mmc monitoring

Monitor health-mmc status to log an SMC event when issues are detected
or when MMC update completes, improving system observability.

'''
"4": {
    "additional_data": {
        "FAILURE_TYPE": "health-mmc",
        "IDENTIFIER": "/xyz/openbmc_project/inventory/system/board/Minerva_Aegis/smc0",
        "_CODE_FILE": "/usr/src/debug/phosphor-logging/1.0+git/log_create_main.cpp",
        "_CODE_FUNC": "int generate_event(const std::string&, const nlohmann::json_abi_v3_11_3::json&)",
        "_CODE_LINE": "34",
        "_PID": "1076"
    },
    "event_id": "",
    "message": "xyz.openbmc_project.State.SMC.SMCFailed",
    "redfish": {
        "args": [
            "/xyz/openbmc_project/inventory/system/board/Minerva_Aegis/smc0"
        ],
        "id": "OpenBMC_StateSMC.SMCFailed",
        "message": "The Satellite Management Controller '/xyz/openbmc_project/inventory/system/board/Minerva_Aegis/smc0' is in a failure state."
    },
    "resolution": "",
    "resolved": true,
    "severity": "xyz.openbmc_project.Logging.Entry.Level.Error",
    "timestamp": "2025-07-14T09:39:10.403000000Z",
    "updated_timestamp": "2025-07-14T09:39:25.462000000Z"
},
"5": {
    "additional_data": {
        "IDENTIFIER": "/xyz/openbmc_project/inventory/system/board/Minerva_Aegis/smc0",
        "_CODE_FILE": "/usr/src/debug/phosphor-logging/1.0+git/log_create_main.cpp",
        "_CODE_FUNC": "int generate_event(const std::string&, const nlohmann::json_abi_v3_11_3::json&)",
        "_CODE_LINE": "34",
        "_PID": "1107"
    },
    "event_id": "",
    "message": "xyz.openbmc_project.State.SMC.SMCRestored",
    "redfish": {
        "args": [
            "/xyz/openbmc_project/inventory/system/board/Minerva_Aegis/smc0"
        ],
        "id": "OpenBMC_StateSMC.SMCRestored",
        "message": "The Satellite Management Controller '/xyz/openbmc_project/inventory/system/board/Minerva_Aegis/smc0' is in a restored state."
    },
    "resolution": "",
    "resolved": false,
    "severity": "xyz.openbmc_project.Logging.Entry.Level.Informational",
    "timestamp": "2025-07-14T09:39:26.963000000Z",
    "updated_timestamp": "2025-07-14T09:39:26.963000000Z"
},
'''

Change-Id: I71bbdcc5ba361543e373e5c43e722f0f14a54239
Signed-off-by: Peter Yin <peter.yin@quantatw.com>

6 files changed, 101 insertions, 6 deletions

diff --git a/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor/plat-phosphor-multi-gpio-monitor.json b/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor/plat-phosphor-multi-gpio-monitor.json
index 27a0ec47a2..3ae18801e9 100644
--- a/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor/plat-phosphor-multi-gpio-monitor.json
+++ b/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor/plat-phosphor-multi-gpio-monitor.json
@@ -256,9 +256,13 @@
         "Name": "health-mmc",
         "ChipId": "5",
         "GpioNum": 7,
-        "EventMon": "RISING",
+        "EventMon": "BOTH",
         "Targets": {
-            "RISING": ["mmc-recovery.service"]
+            "RISING": [
+                "mmc-recovery.service",
+                "smc-deassert-log@5_health-mmc.service"],
+            "FALLING": [
+                "smc-assert-log@5_health-mmc.timer"]
         },
         "Continue": true
     }
diff --git a/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor/smc-assert-log@.service b/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor/smc-assert-log@.service
new file mode 100644
index 0000000000..7d389f5f00
--- /dev/null
+++ b/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor/smc-assert-log@.service
@@ -0,0 +1,7 @@
+[Unit]
+Description=%i SMC Assert
+
+[Service]
+Type=oneshot
+ExecStart=/usr/libexec/phosphor-gpio-monitor/smc-event-logger "assert" "%i"
+SyslogIdentifier=%i-smc-assert
diff --git a/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor/smc-assert-log@.timer b/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor/smc-assert-log@.timer
new file mode 100644
index 0000000000..8ccb445c0d
--- /dev/null
+++ b/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor/smc-assert-log@.timer
@@ -0,0 +1,7 @@
+[Unit]
+Description=Timer to trigger SMC ready
+[Timer]
+OnActiveSec=5s
+Unit=smc-assert-log@%i.service
+[Install]
+WantedBy=timers.target
diff --git a/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor/smc-deassert-log@.service b/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor/smc-deassert-log@.service
new file mode 100644
index 0000000000..c4626b90ba
--- /dev/null
+++ b/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor/smc-deassert-log@.service
@@ -0,0 +1,10 @@
+[Unit]
+Description=%i SMC Deassert
+
+[Service]
+Type=oneshot
+ExecStartPre=/bin/systemctl stop smc-assert-log@%i.timer
+ExecStart=/usr/libexec/phosphor-gpio-monitor/smc-event-logger "deassert" "%i"
+SyslogIdentifier=%i-smc-deassert
+
+Conflicts=smc-assert-log@%i.timer
diff --git a/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor/smc-event-logger b/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor/smc-event-logger
new file mode 100644
index 0000000000..f509614e21
--- /dev/null
+++ b/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor/smc-event-logger
@@ -0,0 +1,58 @@
+#!/bin/bash
+
+# shellcheck source=meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor/logging-util
+source /usr/libexec/phosphor-gpio-monitor/logging-util
+
+HELP="
+Usage: smc-event-logger <event> <id_gpio-name>
+<event> is the power rail event to log,
+e.g. assert / deassert.
+
+<id_gpio-name> is defined in json file,
+e.g. 5_health-mmc
+"
+
+# get assert or deassert message
+if [ "$1" == "assert" ]; then
+  action="SMCFailed"
+elif [ "$1" == "deassert" ]; then
+  action="SMCRestored"
+fi
+
+# get gpio chip ID
+MESSAGE=$2
+number="${MESSAGE%%_*}"
+
+# remove prefix from 0_xxxxxx to xxxxxx
+GPIO_NAME="${MESSAGE#*_}"
+
+MSG_ID="xyz.openbmc_project.State.SMC.$action"
+DEVICE_PATH="/xyz/openbmc_project/inventory/system/board/Minerva_Aegis/smc0"
+STASH_FILE="/run/$GPIO_NAME.log_entry"
+
+if gpio_logging_valid "$number" "$1" ; then
+    case $1 in
+        "-h")
+            echo "$HELP"
+            ;;
+
+        "assert")
+            if [ ! -s "$STASH_FILE" ]; then
+                 /usr/bin/log-create "$MSG_ID" --json \
+                     "{ \"IDENTIFIER\": \"${DEVICE_PATH}\", \"FAILURE_TYPE\": \"${GPIO_NAME}\"}" \
+                     > "${STASH_FILE}"
+            fi
+            ;;
+
+        "deassert")
+            if [ -s "${STASH_FILE}" ]; then
+                log-resolve -p "$(< "${STASH_FILE}")"
+                rm "${STASH_FILE}"
+            fi
+            /usr/bin/log-create "$MSG_ID" --json \
+                "{ \"IDENTIFIER\": \"${DEVICE_PATH}\"}"
+            ;;
+    esac
+fi
+
+exit 0
diff --git a/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor_%.bbappend b/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor_%.bbappend
index 42a33f8554..b2d5d490bb 100644
--- a/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor_%.bbappend
+++ b/meta-facebook/meta-harma/recipes-phosphor/gpio/phosphor-gpio-monitor_%.bbappend
@@ -40,6 +40,10 @@ SRC_URI += "file://assert-post-end \
             file://power-rail-event-logger \
             file://prochot-assert-log.service \
             file://prochot-deassert-log.service \
+            file://smc-assert-log@.service \
+            file://smc-assert-log@.timer \
+            file://smc-deassert-log@.service \
+            file://smc-event-logger \
             file://thermtrip-assert-log.service \
             file://thermtrip-deassert-log.service \
             file://thermal-event-logger \
@@ -60,14 +64,17 @@ SYSTEMD_SERVICE:${PN} += " \
     deassert-post-end.service \
     deassert-reset-button.service \
     deassert-uart-switch-button.service \
-    mmc-recovery.service \
-    multi-gpios-sys-init.service \
     device-reinitial@.service \
     fan-reload.service \
-    thermtrip-assert-log.service \
-    thermtrip-deassert-log.service  \
+    mmc-recovery.service \
+    multi-gpios-sys-init.service \
     prochot-assert-log.service \
     prochot-deassert-log.service  \
+    smc-assert-log@.service \
+    smc-assert-log@.timer \
+    smc-deassert-log@.service \
+    thermtrip-assert-log.service \
+    thermtrip-deassert-log.service  \
     "
 
 do_install:append() {
@@ -82,10 +89,12 @@ do_install:append() {
 
     install -d ${D}${systemd_system_unitdir}/
     install -m 0644 ${UNPACKDIR}/*.service ${D}${systemd_system_unitdir}/
+    install -m 0644 ${UNPACKDIR}/*.timer ${D}${systemd_system_unitdir}
 
     install -d ${D}${libexecdir}/${PN}
     install -m 0755 ${UNPACKDIR}/gpios-event-logger ${D}${libexecdir}/${PN}/
     install -m 0755 ${UNPACKDIR}/power-rail-event-logger ${D}${libexecdir}/${PN}/
+    install -m 0755 ${UNPACKDIR}/smc-event-logger ${D}${libexecdir}/${PN}/
     install -m 0755 ${UNPACKDIR}/thermal-event-logger ${D}${libexecdir}/${PN}/
     install -m 0755 ${UNPACKDIR}/vr-fault-event-logger ${D}${libexecdir}/${PN}/