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 6 7from autotest_lib.client.common_lib import utils 8from autotest_lib.server.cros.faft.firmware_test import FirmwareTest 9 10 11class firmware_CgptStress(FirmwareTest): 12 """ 13 Servo based, iterative cgpt test. One iteration of test modifies CGPT to 14 switch to boot kernel B and then switch back to kernel A again. 15 """ 16 version = 1 17 18 def initialize(self, host, cmdline_args, dev_mode): 19 # Parse arguments from command line 20 dict_args = utils.args_to_dict(cmdline_args) 21 self.faft_iterations = int(dict_args.get('faft_iterations', 1)) 22 super(firmware_CgptStress, self).initialize(host, cmdline_args) 23 self.backup_cgpt_attributes() 24 self.switcher.setup_mode('dev' if dev_mode else 'normal', 25 allow_gbb_force=True) 26 self.setup_usbkey(usbkey=False) 27 self.setup_kernel('a') 28 29 def cleanup(self): 30 try: 31 self.restore_cgpt_attributes() 32 except Exception as e: 33 logging.error("Caught exception: %s", str(e)) 34 super(firmware_CgptStress, self).cleanup() 35 36 def run_once(self): 37 """Runs a single iteration of the test.""" 38 for i in range(self.faft_iterations): 39 logging.info('======== Running FAFT ITERATION %d/%s ========', 40 i + 1, self.faft_iterations) 41 logging.info("Expected kernel A boot and prioritize kernel B.") 42 self.check_state((self.checkers.root_part_checker, 'a')) 43 self.reset_and_prioritize_kernel('b') 44 self.switcher.mode_aware_reboot() 45 46 logging.info("Expected kernel B boot and prioritize kernel A.") 47 self.check_state((self.checkers.root_part_checker, 'b')) 48 self.reset_and_prioritize_kernel('a') 49 self.switcher.mode_aware_reboot() 50 51 logging.info("Expected kernel A boot, done.") 52 self.check_state((self.checkers.root_part_checker, 'a')) 53