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 5 import logging 6 7 from autotest_lib.client.common_lib import error 8 from autotest_lib.server.cros.faft.firmware_test import FirmwareTest 9 10 11 class firmware_ECPeci(FirmwareTest): 12 """ 13 Servo based EC PECI test. 14 """ 15 version = 1 16 17 # Repeat read count 18 READ_COUNT = 200 19 20 def initialize(self, host, cmdline_args): 21 super(firmware_ECPeci, self).initialize(host, cmdline_args) 22 # Don't bother if there is no Chrome EC. 23 if not self.check_ec_capability(['peci']): 24 raise error.TestNAError("Nothing needs to be tested on this device") 25 self.ec.send_command("chan 0") 26 27 def cleanup(self): 28 try: 29 self.ec.send_command("chan 0xffffffff") 30 except Exception as e: 31 logging.error("Caught exception: %s", str(e)) 32 super(firmware_ECPeci, self).cleanup() 33 34 def _check_read(self): 35 """Read CPU temperature through PECI. 36 37 Raises: 38 error.TestFail: Raised when read fails. 39 """ 40 t = int(self.ec.send_command_get_output("pecitemp", 41 ["CPU temp = (\d+) K"])[0][1]) 42 if t < 273 or t > 400: 43 raise error.TestFail("Abnormal CPU temperature %d K" % t) 44 45 def run_once(self): 46 """Execute the main body of the test. 47 """ 48 if not self.check_ec_capability(['peci']): 49 raise error.TestNAError("Nothing needs to be tested on this device") 50 logging.info("Reading PECI CPU temperature for %d times.", 51 self.READ_COUNT) 52 for _ in xrange(self.READ_COUNT): 53 self._check_read() 54
