| #!/usr/bin/python |
| |
| import sys |
| import dbus |
| import argparse |
| |
| from dbus.mainloop.glib import DBusGMainLoop |
| import gobject |
| import os |
| import signal |
| import time |
| from subprocess import Popen |
| |
| import obmc_system_config |
| import obmc.system |
| |
| descriptors = { |
| 'power': { |
| 'bus_name': 'org.openbmc.control.Power', |
| 'object_name': '/org/openbmc/control/power0', |
| 'interface_name': 'org.openbmc.control.Power' |
| }, |
| 'chassison': { |
| 'bus_name': 'xyz.openbmc_project.State.Chassis', |
| 'object_name': '/xyz/openbmc_project/state/chassis0', |
| 'interface_name': 'xyz.openbmc_project.State.Chassis', |
| 'property': 'RequestedPowerTransition', |
| 'value': 'xyz.openbmc_project.State.Chassis.Transition.On', |
| 'monitor': 'obmc-chassis-poweron@0.target', |
| }, |
| 'chassisoff': { |
| 'bus_name': 'xyz.openbmc_project.State.Chassis', |
| 'object_name': '/xyz/openbmc_project/state/chassis0', |
| 'interface_name': 'xyz.openbmc_project.State.Chassis', |
| 'property': 'RequestedPowerTransition', |
| 'value': 'xyz.openbmc_project.State.Chassis.Transition.Off', |
| 'monitor': 'obmc-chassis-hard-poweroff@0.target', |
| }, |
| 'poweron': { |
| 'bus_name': 'xyz.openbmc_project.State.Host', |
| 'object_name': '/xyz/openbmc_project/state/host0', |
| 'interface_name': 'xyz.openbmc_project.State.Host', |
| 'property': 'RequestedHostTransition', |
| 'value': 'xyz.openbmc_project.State.Host.Transition.On', |
| 'monitor': 'obmc-host-start@0.target', |
| }, |
| 'poweroff': { |
| 'bus_name': 'xyz.openbmc_project.State.Host', |
| 'object_name': '/xyz/openbmc_project/state/host0', |
| 'interface_name': 'xyz.openbmc_project.State.Host', |
| 'property': 'RequestedHostTransition', |
| 'value': 'xyz.openbmc_project.State.Host.Transition.Off', |
| 'monitor': 'obmc-host-stop@0.target', |
| }, |
| 'bmcstate': { |
| 'bus_name': 'xyz.openbmc_project.State.BMC', |
| 'object_name': '/xyz/openbmc_project/state/bmc0', |
| 'interface_name': 'xyz.openbmc_project.State.BMC', |
| 'property': 'CurrentBMCState', |
| }, |
| 'chassisstate': { |
| 'bus_name': 'xyz.openbmc_project.State.Chassis', |
| 'object_name': '/xyz/openbmc_project/state/chassis0', |
| 'interface_name': 'xyz.openbmc_project.State.Chassis', |
| 'property': 'CurrentPowerState', |
| }, |
| 'hoststate': { |
| 'bus_name': 'xyz.openbmc_project.State.Host', |
| 'object_name': '/xyz/openbmc_project/state/host0', |
| 'interface_name': 'xyz.openbmc_project.State.Host', |
| 'property': 'CurrentHostState', |
| }, |
| 'bootprogress': { |
| 'bus_name': 'xyz.openbmc_project.State.Host', |
| 'object_name': '/xyz/openbmc_project/state/host0', |
| 'interface_name': 'xyz.openbmc_project.State.Boot.Progress', |
| 'property': 'BootProgress', |
| }, |
| 'state' : ['bmcstate', 'chassisstate', 'hoststate'] |
| } |
| |
| def run_set_property(dbus_bus, dbus_iface, descriptor, args): |
| mainloop = gobject.MainLoop() |
| |
| iface = descriptor['interface_name'] |
| prop = descriptor['property'] |
| |
| if 'monitor' not in descriptor: |
| dbus_iface.Set(iface, prop, descriptor['value']) |
| return True |
| |
| def property_listener(job, path, unit, state): |
| if descriptor['monitor'] != unit: |
| return |
| |
| property_listener.success = (state == 'done') |
| mainloop.quit() |
| |
| property_listener.success = True |
| |
| if args.wait and args.verbose: |
| pid = Popen(["/bin/journalctl", "-f", "--no-pager"]).pid |
| |
| if args.wait: |
| sig_match = dbus_bus.add_signal_receiver(property_listener, "JobRemoved") |
| |
| dbus_iface.Set(iface, prop, descriptor['value']) |
| |
| if args.wait: |
| mainloop.run() |
| sig_match.remove() |
| |
| if args.wait and args.verbose: |
| # wait some time for the journal output |
| time.sleep(args.wait_tune) |
| os.kill(pid, signal.SIGTERM) |
| |
| return property_listener.success |
| |
| def get_dbus_obj(dbus_bus, bus, obj, args): |
| if not args.wait: |
| return dbus_bus.get_object(bus, obj) |
| |
| mainloop = gobject.MainLoop() |
| |
| def property_listener(job, path, unit, state): |
| if 'obmc-standby.target' == unit: |
| mainloop.quit() |
| |
| sig_match = dbus_bus.add_signal_receiver(property_listener, "JobRemoved") |
| try: |
| return dbus_bus.get_object(bus, obj) |
| except dbus.exceptions.DBusException as e: |
| if args.verbose: |
| pid = Popen(["/bin/journalctl", "-f", "--no-pager"]).pid |
| |
| mainloop.run() |
| |
| if args.verbose: |
| os.kill(pid, signal.SIGTERM) |
| finally: |
| sig_match.remove() |
| |
| return dbus_bus.get_object(bus, obj) |
| |
| def run_one_command(dbus_bus, descriptor, args): |
| bus = descriptor['bus_name'] |
| obj = descriptor['object_name'] |
| iface = descriptor['interface_name'] |
| dbus_obj = get_dbus_obj(dbus_bus, bus, obj, args) |
| result = None |
| |
| if 'property' in descriptor: |
| dbus_iface = dbus.Interface(dbus_obj, "org.freedesktop.DBus.Properties") |
| if 'value' in descriptor: |
| result = run_set_property(dbus_bus, dbus_iface, descriptor, args) |
| else: |
| prop = descriptor['property'] |
| dbus_prop = dbus_iface.Get(iface, prop) |
| print '{:<20}: {}'.format(prop, str(dbus_prop)) |
| result = True |
| else: |
| dbus_iface = dbus.Interface(dbus_obj, "org.freedesktop.DBus.Properties") |
| props = dbus_iface.GetAll(iface) |
| for p in props: |
| print "{} = {}".format(p, str(props[p])) |
| result = True |
| |
| return result |
| |
| def run_all_commands(dbus_bus, recipe, args): |
| if isinstance(recipe, dict): |
| return run_one_command(dbus_bus, recipe, args) |
| |
| assert isinstance(recipe, list) |
| for command in recipe: |
| descriptor = descriptors[command] |
| if not run_one_command(dbus_bus, descriptor, args): |
| print "Failed to execute command: {}".format(descriptor) |
| return False |
| |
| return True |
| |
| def gpio_set_value(gpio_name, active_low, asserted): |
| gpio_id = obmc.system.convertGpio(gpio_name) |
| gpio_value_path = "/sys/class/gpio/gpio{}/value".format(gpio_id) |
| |
| with open(gpio_value_path, 'w') as gpio: |
| # Inversion behaviour needs to change with the resolution of |
| # https://github.com/openbmc/openbmc/issues/2489, where properly |
| # configuring the kernel will allow it to handle the inversion for us. |
| gpio.write(str(int(asserted ^ active_low))) |
| |
| return True |
| |
| def gpio_deassert(gpio_name, active_low, args): |
| # Deal with silly python2 exception handling as outlined in main |
| if args.verbose: |
| return gpio_set_value(gpio_name, active_low, False) |
| |
| try: |
| return gpio_set_value(gpio_name, active_low, False) |
| except IOError as e: |
| print >> sys.stderr, "Failed to access GPIO {}: {}".format(gpio_name, e.message) |
| return False |
| |
| def run_chassiskill(args): |
| # We shouldn't be able to invoke run_chassiskill() unless it's been |
| # explicitly added as a valid command to argparse in main() |
| assert can_chassiskill() |
| |
| # Multi-dimensional fetch is now exception-safe |
| gpios = obmc_system_config.GPIO_CONFIGS['power_config']['power_up_outs'] |
| |
| gc = obmc_system_config.GPIO_CONFIG |
| |
| for gpio in gpios: |
| function = gpio[0] |
| |
| if function not in gc or 'gpio_pin' not in gc[function]: |
| print >> sys.stderr, "Missing or invalid definition for '{}' in system GPIO_CONFIG".format(function) |
| continue |
| |
| name = gc[function]['gpio_pin'] |
| |
| # The second element of the tuples stashed in 'power_up_outs' |
| # represents the boolean condition of the statement 'active high'. To |
| # mirror the code at [1] we instead need the condition of the statement |
| # 'active low', thus we negate gpio[1]. |
| # |
| # [1] https://github.com/openbmc/skeleton/blob/93b84e42834893313616f96c70743369f26a7190/op-pwrctl/power_control_obj.c#L283 |
| active_low = not gpio[1] |
| |
| if not gpio_deassert(name, active_low, args): |
| return False |
| |
| return True |
| |
| def can_chassiskill(): |
| gcs = obmc_system_config.GPIO_CONFIGS |
| |
| if 'power_config' in gcs: |
| if 'power_up_outs' in gcs['power_config']: |
| # Just to be sure |
| return len(gcs['power_config']) > 0 |
| |
| return False |
| |
| def main(): |
| dbus.mainloop.glib.DBusGMainLoop(set_as_default=True) |
| |
| # Conditionally add the `chassiskill` commmand based on whether the |
| # required GPIO configuration is present in the system description. |
| if can_chassiskill(): |
| descriptors['chassiskill'] = None |
| |
| parser = argparse.ArgumentParser() |
| parser.add_argument('--verbose', '-v', action='store_true', |
| help="Verbose output") |
| parser.add_argument('--wait', '-w', action='store_true', |
| help='Block until the state transition succeeds or fails') |
| parser.add_argument('--wait-tune', '-t', nargs='?', default=8, type=float, |
| # help='Seconds to wait for journal output to complete after receiving DBus signal', |
| help=argparse.SUPPRESS) |
| parser.add_argument('recipe', choices=sorted(descriptors.keys())) |
| args = parser.parse_args() |
| |
| # This is a special case: directly pull the power, don't do any D-Bus |
| # related stuff |
| if args.recipe == "chassiskill": |
| return run_chassiskill(args) |
| |
| dbus_bus = dbus.SystemBus() |
| |
| # The only way to get a sensible backtrace with python 2 without stupid |
| # hoops is to let the uncaught exception handler do the work for you. |
| # Catching and binding an exception appears to overwrite the stack trace at |
| # the point of bind. |
| # |
| # So, if we're in verbose mode, don't try to catch the DBus exception. That |
| # way we can understand where it originated. |
| if args.verbose: |
| return run_all_commands(dbus_bus, descriptors[args.recipe], args) |
| |
| # Otherwise, we don't care about the traceback. Just catch it and print the |
| # error message. |
| try: |
| return run_all_commands(dbus_bus, descriptors[args.recipe], args) |
| except dbus.exceptions.DBusException as e: |
| print >> sys.stderr, "DBus error occurred: {}".format(e.get_dbus_message()) |
| finally: |
| dbus_bus.close() |
| |
| if __name__ == "__main__": |
| sys.exit(0 if main() else 1) |