meta-ampere: add fault monitor support
Support to detect GPIO, PSU, FAN, ... faults and turn ON/OFF fault LED.
Tested:
1. Unplug a PSU and check if Fault LED is turned ON.
2. Unplug a FAN and check if Fault LED is turned ON.
3. Stimulate GPIO fault pattern and check if the BMC can detect
Signed-off-by: Thang Q. Nguyen <thang@os.amperecomputing.com>
Signed-off-by: Hieu Huynh <hieuh@os.amperecomputing.com>
Signed-off-by: Quang Nguyen <quangn@amperecomputing.com>
Change-Id: Idfcd32953cf811fbe9299a162f604cb8fd028962
diff --git a/meta-ampere/meta-mitchell/recipes-ampere/platform/ampere-fault-monitor/ampere_fault_monitor.sh b/meta-ampere/meta-mitchell/recipes-ampere/platform/ampere-fault-monitor/ampere_fault_monitor.sh
new file mode 100644
index 0000000..e176629
--- /dev/null
+++ b/meta-ampere/meta-mitchell/recipes-ampere/platform/ampere-fault-monitor/ampere_fault_monitor.sh
@@ -0,0 +1,218 @@
+#!/bin/bash
+# This script monitors fan, over-temperature, PSU, CPU/SCP failure and update fault LED status
+
+# shellcheck disable=SC2004
+# shellcheck source=/dev/null
+source /usr/sbin/gpio-lib.sh
+
+# common variables
+ on=1
+ off=0
+
+ overtemp_fault_flag='/tmp/fault_overtemp'
+
+# gpio fault
+ gpio_fault="false"
+ gpio_fault_flag="/tmp/gpio_fault"
+
+# fan variables
+ fan_failed="false"
+ fan_failed_flag='/tmp/fan_failed'
+
+# PSU variables
+ psu_failed="false"
+ psu_bus=2
+ psu0_addr=0x58
+ psu1_addr=0x59
+ status_word_cmd=0x79
+ # Following the PMBus Specification
+ # Bit[1]: CML faults
+ # Bit[2]: Over temperature faults
+ # Bit[3]: Under voltage faults
+ # Bit[4]: Over current faults
+ # Bit[5]: Over voltage fault
+ # Bit[10]: Fan faults
+ psu_fault_bitmask=0x43e
+
+# led variables
+ fan_fault_led_status=$off
+ psu_fault_led_status=$off
+ led_bus=15
+ led_addr=0x22
+ led_port0_config=0x06
+ led_port0_output=0x02
+
+# functions declaration
+check_fan_failed() {
+ if [[ -f $fan_failed_flag ]]; then
+ fan_failed="true"
+ else
+ fan_failed="false"
+ fi
+}
+
+turn_on_off_fan_fault_led() {
+ # Control fan fault led via CPLD's I2C at slave address 0x22, I2C16.
+ # Get Port0 value
+ p0_val=$(i2cget -f -y $led_bus $led_addr $led_port0_config)
+ p0_val=$(("$p0_val" & ~1))
+ # Config CPLD's IOepx Port0[0] from input to output, clear IOepx Port0[0].
+ i2cset -f -y $led_bus $led_addr $led_port0_config $p0_val
+
+ # Get led value
+ led_st=$(i2cget -f -y $led_bus $led_addr $led_port0_output)
+
+ if [ "$1" == $on ]; then
+ led_st=$(("$led_st" | 1))
+ else
+ led_st=$(("$led_st" & ~1))
+ fi
+
+ # Turn on/off fan fault led
+ i2cset -f -y $led_bus $led_addr $led_port0_output $led_st
+}
+
+turn_on_off_psu_fault_led() {
+ # Control psu fault led via CPLD's I2C at slave address 0x22, I2C16.
+ # Get Port1 value
+ p1_val=$(i2cget -f -y $led_bus $led_addr $led_port0_config)
+ p1_val=$(("$p1_val" & ~2))
+ # Config CPLD's IOepx Port0[1] from input to output, clear IOepx Port0[1].
+ i2cset -f -y $led_bus $led_addr $led_port0_config $p1_val
+
+ # Get led value
+ led_st=$(i2cget -f -y $led_bus $led_addr $led_port0_output)
+ if [ "$1" == $on ]; then
+ led_st=$(("$led_st" | 2))
+ else
+ led_st=$(("$led_st" & ~2))
+ fi
+
+ # Turn on/off psu fault led
+ i2cset -f -y $led_bus $led_addr $led_port0_output $led_st
+}
+
+control_fan_fault_led() {
+ if [ "$fan_failed" == "true" ]; then
+ if [ "$fan_fault_led_status" == $off ]; then
+ turn_on_off_fan_fault_led $on
+ fan_fault_led_status=$on
+ fi
+ else
+ if [ "$fan_fault_led_status" == $on ]; then
+ turn_on_off_fan_fault_led $off
+ fan_fault_led_status=$off
+ fi
+ fi
+}
+
+check_psu_failed() {
+ local psu0_presence
+ local psu1_presence
+ local psu0_value
+ local psu1_value
+
+ psu0_presence=$(gpio_name_get presence-ps0)
+ psu0_failed="true"
+ if [ "$psu0_presence" == "0" ]; then
+ # PSU0 presence, monitor the PSUs using pmbus, check the STATUS_WORD
+ psu0_value=$(i2cget -f -y $psu_bus $psu0_addr $status_word_cmd w)
+ psu0_bit_fault=$(($psu0_value & $psu_fault_bitmask))
+ if [ "$psu0_bit_fault" == "0" ]; then
+ psu0_failed="false"
+ fi
+ fi
+
+ psu1_presence=$(gpio_name_get presence-ps1)
+ psu1_failed="true"
+ if [ "$psu1_presence" == "0" ]; then
+ # PSU1 presence, monitor the PSUs using pmbus, check the STATUS_WORD
+ psu1_value=$(i2cget -f -y $psu_bus $psu1_addr $status_word_cmd w)
+ psu1_bit_fault=$(($psu1_value & $psu_fault_bitmask))
+ if [ "$psu1_bit_fault" == "0" ]; then
+ psu1_failed="false"
+ fi
+ fi
+
+ if [ "$psu0_failed" == "true" ] || [ "$psu1_failed" == "true" ]; then
+ psu_failed="true"
+ else
+ psu_failed="false"
+ fi
+}
+
+control_psu_fault_led() {
+ if [ "$psu_failed" == "true" ]; then
+ if [ "$psu_fault_led_status" == $off ]; then
+ turn_on_off_psu_fault_led $on
+ psu_fault_led_status=$on
+ fi
+ else
+ if [ "$psu_fault_led_status" == $on ]; then
+ turn_on_off_psu_fault_led $off
+ psu_fault_led_status=$off
+ fi
+ fi
+}
+
+check_overtemp_occured() {
+ if [[ -f $overtemp_fault_flag ]]; then
+ echo "Over temperature occured, turn on fault LED"
+ overtemp_occured="true"
+ else
+ overtemp_occured="false"
+ fi
+}
+
+
+check_gpio_fault() {
+ if [[ -f $gpio_fault_flag ]]; then
+ echo "GPIO fault event(s) occured, turn on fault LED"
+ gpio_fault="true"
+ else
+ gpio_fault="false"
+ fi
+}
+
+check_fault() {
+ if [[ "$fan_failed" == "true" ]] || [[ "$psu_failed" == "true" ]] \
+ || [[ "$overtemp_occured" == "true" ]] \
+ || [[ "$gpio_fault" == "true" ]]; then
+ fault="true"
+ else
+ fault="false"
+ fi
+}
+
+# The System Fault Led turns on upon the system error, update the System Fault Led
+# based on the Fan fault status and PSU fault status
+control_sys_fault_led() {
+ # Turn on/off the System Fault Led
+ if [ "$fault" == "true" ]; then
+ gpio_name_set led-fault $on
+ else
+ gpio_name_set led-fault $off
+ fi
+}
+
+# daemon start
+while true
+do
+ # Monitors Fan speeds
+ check_fan_failed
+ # Monitors PSU presence
+ check_psu_failed
+
+ check_overtemp_occured
+ check_gpio_fault
+ # Check fault to update fail
+ check_fault
+ control_sys_fault_led
+
+ control_fan_fault_led
+ control_psu_fault_led
+
+ sleep 2
+done
+
+exit 1