52 lines
1.7 KiB
Python
52 lines
1.7 KiB
Python
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# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import logging
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import time
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from autotest_lib.client.common_lib import error
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from autotest_lib.server.cros.faft.firmware_test import FirmwareTest
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class firmware_ECWatchdog(FirmwareTest):
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"""
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Servo based EC watchdog test.
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"""
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version = 1
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# Delay of spin-wait in ms. Nuvoton boards set the hardware watchdog to
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# 3187.5ms and also sets a timer to 2200ms. Set the timeout long enough to
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# exceed the hardware watchdog timer because the timer isn't 100% reliable.
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# If there are other platforms that use a longer watchdog timeout, this
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# may need to be adjusted.
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WATCHDOG_DELAY = 3700 # 3187.5ms + 500ms safety margin, rounded up.
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# Delay of EC power on.
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EC_BOOT_DELAY = 1000
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def initialize(self, host, cmdline_args):
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super(firmware_ECWatchdog, self).initialize(host, cmdline_args)
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# Only run in normal mode
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self.switcher.setup_mode('normal')
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def reboot_by_watchdog(self):
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"""
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Trigger a watchdog reset.
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"""
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self.faft_client.system.run_shell_command("sync")
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self.ec.send_command("waitms %d" % self.WATCHDOG_DELAY)
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time.sleep((self.WATCHDOG_DELAY + self.EC_BOOT_DELAY) / 1000.0)
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self.check_lid_and_power_on()
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def run_once(self):
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"""Runs a single iteration of the test."""
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if not self.check_ec_capability():
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raise error.TestNAError("Nothing needs to be tested on this device")
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logging.info("Trigger a watchdog reset and power on system again.")
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self.switcher.mode_aware_reboot('custom', self.reboot_by_watchdog)
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