pystatemgr/discover_system_state.py

#!/usr/bin/python

import sys
import gobject
import dbus
import dbus.service
import dbus.mainloop.glib


dbus_objects = {
    'power' : {
        'bus_name' : 'org.openbmc.control.Power',
        'object_name' : '/org/openbmc/control/power0',
        'interface_name' : 'org.openbmc.control.Power'
    },
    'occstatus0' : {
        'bus_name' : 'org.openbmc.Sensors',
        'object_name' : '/org/openbmc/sensors/host/cpu0/OccStatus',
        'interface_name' : 'org.openbmc.SensorValue'
    },
    'occstatus1' : {
        'bus_name' : 'org.openbmc.Sensors',
        'object_name' : '/org/openbmc/sensors/host/cpu1/OccStatus',
        'interface_name' : 'org.openbmc.SensorValue'
    },
    'bootprogress' : {
        'bus_name' : 'org.openbmc.Sensors',
        'object_name' : '/org/openbmc/sensors/host/BootProgress',
        'interface_name' : 'org.openbmc.SensorValue'
    },
    'chassis' : {
        'bus_name' : 'org.openbmc.control.Chassis',
        'object_name' : '/org/openbmc/control/chassis0',
        'interface_name' : 'org.openbmc.control.Chassis'
    },
    'settings' : {
        'bus_name' : 'org.openbmc.settings.Host',
        'object_name' : '/org/openbmc/settings/host0',
        'interface_name' : 'org.freedesktop.DBus.Properties'
    },
}

def getInterface(bus,objs,key):
    obj = bus.get_object(objs[key]['bus_name'],objs[key]['object_name'],introspect=False)
    return dbus.Interface(obj,objs[key]['interface_name'])

def getProperty(bus,objs,key,prop):
    obj = bus.get_object(objs[key]['bus_name'],objs[key]['object_name'],introspect=False)
    intf = dbus.Interface(obj,dbus.PROPERTIES_IFACE)
    return intf.Get(objs[key]['interface_name'],prop)


bus = dbus.SystemBus()
pgood = getProperty(bus,dbus_objects,'power','pgood')

if (pgood == 1):
    intf = getInterface(bus,dbus_objects,'bootprogress')
    intf.setValue("FW Progress, Starting OS")
    intf = getInterface(bus,dbus_objects,'occstatus0')
    intf.setValue("Enabled")
    intf = getInterface(bus,dbus_objects,'occstatus1')
    intf.setValue("Enabled")
else:
    ## Power is off, so check power policy
    settings_intf = getInterface(bus,dbus_objects,'settings')
    system_state = settings_intf.Get("org.openbmc.settings.Host","system_state")
    power_policy = settings_intf.Get("org.openbmc.settings.Host","power_policy")

    print "Last System State: "+system_state+";  Power Policy: "+power_policy
    chassis_intf = getInterface(bus,dbus_objects,'chassis')
    if (power_policy == "ALWAYS_POWER_ON" or
       (power_policy == "RESTORE_LAST_STATE" and 
        system_state =="HOST_POWERED_ON")):
        chassis_intf.powerOn()