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#!/bin/sh
# set and unset occ active for all occ's in system
if [ "$1" == "disable" ]; then
value='false'
elif [ "$1" == "enable" ]; then
value='true'
elif [ "$1" == "watchdog" ]; then
value='true'
else
echo "Usage: occ-active.sh [argument]"
echo " enable - set occ's to active state"
echo " disable - set occ's to inactive state"
exit -1
fi
if [ "$value" == "true" ]; then
# Verify host IPL is complete
while [ ! -e /run/openbmc/host@0-ipl-complete ]; do
echo "Waiting for host IPL to complete before engaging OCC interface..."
sleep 1
done
fi
# Get CPU count
CPU_COUNT=1
STATUS_FLAGS=$(i2cget -y 12 0x31 0x7)
if [ $? != 0 ]; then
STATUS_FLAGS=$(i2cget -y 12 0x31 0x7)
fi
if [ $? != 0 ]; then
STATUS_FLAGS=$(i2cget -y 12 0x31 0x7)
fi
CPU_PRESENT_FLAG_N=$(( ${STATUS_FLAGS} & 0x20 ))
if [ $CPU_PRESENT_FLAG_N != 0 ]; then
CPU_COUNT=$(( ${CPU_COUNT} + 1 ))
fi
echo "Found $CPU_COUNT CPU(s)"
OCC_CONTROL_SERVICE="org.open_power.OCC.Control"
if [ "$value" == "true" ]; then
# Disable existing OCC service
busctl tree $OCC_CONTROL_SERVICE --list | grep occ | xargs -r -n1 -I{} \
busctl set-property $OCC_CONTROL_SERVICE {} org.open_power.OCC.Status \
OccActive b 'false'
# Rescan bus to find OCCs
openpower-proc-control scanFSI
fi
busctl tree $OCC_CONTROL_SERVICE --list | grep occ | xargs -r -n1 -I{} \
busctl set-property $OCC_CONTROL_SERVICE {} org.open_power.OCC.Status \
OccActive b $value
if [ "$value" == "true" ]; then
# Wait 5 seconds before restarting fan controller
sleep 5
systemctl restart phosphor-fan-control@0.service
else
# Unbind all OCC drivers to avoid bus contention on next IPL
echo occ1-dev0 > /sys/bus/platform/drivers/occ-hwmon/unbind || true
echo occ2-dev0 > /sys/bus/platform/drivers/occ-hwmon/unbind || true
echo sbefifo1-dev0 > /sys/bus/platform/drivers/occ/unbind || true
echo sbefifo2-dev0 > /sys/bus/platform/drivers/occ/unbind || true
fi
if [ "$1" == "watchdog" ]; then
# Start watchdog
while [ 1 == 1 ]; do
sleep 5
if [ ! -e /run/openbmc/host@0-ipl-complete ]; then
echo "Exiting due to missing IPL complete flag file"
exit 0
fi
OCC_FAULT=0
if [ ! -e /sys/bus/platform/drivers/occ/sbefifo1-dev0/occ1-dev0/occ_error ]; then
OCC_FAULT=1
else
STATUS=$(cat /sys/bus/platform/drivers/occ/sbefifo1-dev0/occ1-dev0/occ_error)
if [ $STATUS != 0 ]; then
OCC_FAULT=1
fi
fi
if [ $CPU_COUNT -gt 1 ]; then
if [ ! -e /sys/bus/platform/drivers/occ/sbefifo2-dev0/occ2-dev0/occ_error ]; then
OCC_FAULT=1
fi
else
if [ $STATUS != 0 ]; then
OCC_FAULT=1
fi
fi
if [ $OCC_FAULT != 0 ]; then
# OCC driver failed. Rescan bus to recover.
# Disable existing OCC service
busctl tree $OCC_CONTROL_SERVICE --list | grep occ | xargs -r -n1 -I{} \
busctl set-property $OCC_CONTROL_SERVICE {} org.open_power.OCC.Status \
OccActive b 'false'
# Give enough time for the OCC control service to attempt unload before forcible unbind
sleep 5
# Unbind all OCC drivers
echo occ1-dev0 > /sys/bus/platform/drivers/occ-hwmon/unbind || true
echo occ2-dev0 > /sys/bus/platform/drivers/occ-hwmon/unbind || true
echo sbefifo1-dev0 > /sys/bus/platform/drivers/occ/unbind || true
echo sbefifo2-dev0 > /sys/bus/platform/drivers/occ/unbind || true
# Wait 10 seconds for OCC to figure out something has happened / bus contention to stop
sleep 10
# Make sure system hasn't gone down in the interim
if [ ! -e /run/openbmc/host@0-ipl-complete ]; then
echo "Exiting due to missing IPL complete flag file"
exit 0
fi
openpower-proc-control scanFSI
# Re-enable OCC service
busctl tree $OCC_CONTROL_SERVICE --list | grep occ | xargs -r -n1 -I{} \
busctl set-property $OCC_CONTROL_SERVICE {} org.open_power.OCC.Status \
OccActive b 'true'
# Give the OCC service time to start
sleep 5
# Restart fan controller
systemctl restart phosphor-fan-control@0.service
fi
done
fi
exit 0
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