1# Copyright (c) 2012 The Chromium OS Authors. All rights reserved. 2# Use of this source code is governed by a BSD-style license that can be 3# found in the LICENSE file. 4 5import logging 6import time 7 8from autotest_lib.client.common_lib import error 9from autotest_lib.server.cros.faft.firmware_test import FirmwareTest 10 11class firmware_ECWatchdog(FirmwareTest): 12 """ 13 Servo based EC watchdog test. 14 """ 15 version = 1 16 17 18 # Delay of spin-wait in ms. Should be long enough to trigger watchdog reset. 19 WATCHDOG_DELAY = 3000 20 21 # Delay of EC power on. 22 EC_BOOT_DELAY = 1000 23 24 25 def initialize(self, host, cmdline_args): 26 super(firmware_ECWatchdog, self).initialize(host, cmdline_args) 27 # Only run in normal mode 28 self.switcher.setup_mode('normal') 29 30 31 def reboot_by_watchdog(self): 32 """ 33 Trigger a watchdog reset. 34 """ 35 self.faft_client.system.run_shell_command("sync") 36 self.ec.send_command("waitms %d" % self.WATCHDOG_DELAY) 37 time.sleep((self.WATCHDOG_DELAY + self.EC_BOOT_DELAY) / 1000.0) 38 self.check_lid_and_power_on() 39 40 41 def run_once(self): 42 if not self.check_ec_capability(): 43 raise error.TestNAError("Nothing needs to be tested on this device") 44 45 logging.info("Trigger a watchdog reset and power on system again.") 46 self.switcher.mode_aware_reboot('custom', self.reboot_by_watchdog) 47