| # Copyright 2018 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| import logging |
| |
| from autotest_lib.server.cros.faft.firmware_test import FirmwareTest |
| |
| |
| class firmware_WriteProtect(FirmwareTest): |
| """ |
| This test checks whether the hardware write-protect state reported by |
| crossystem matches the real write-protect state driven by Servo. |
| """ |
| version = 1 |
| |
| def initialize(self, host, cmdline_args, dev_mode=False): |
| super(firmware_WriteProtect, self).initialize(host, cmdline_args) |
| self.switcher.setup_mode('dev' if dev_mode else 'normal') |
| self._original_wp = self.servo.get('fw_wp') == 'on' |
| |
| def cleanup(self): |
| try: |
| self.set_hardware_write_protect(self._original_wp) |
| except Exception as e: |
| logging.error('Caught exception: %s', str(e)) |
| super(firmware_WriteProtect, self).cleanup() |
| |
| def run_once(self): |
| logging.info('Force write-protect on and reboot for a clean slate.') |
| self.set_hardware_write_protect(True) |
| self.switcher.mode_aware_reboot() |
| self.check_state((self.checkers.crossystem_checker, { |
| 'wpsw_boot': '1', |
| 'wpsw_cur': '1', |
| })) |
| logging.info('Now disable write-protect and check again.') |
| self.set_hardware_write_protect(False) |
| self.check_state((self.checkers.crossystem_checker, { |
| 'wpsw_boot': '1', |
| 'wpsw_cur': '0', |
| })) |
| logging.info('Reboot so WP change takes effect for wpsw_boot.') |
| self.switcher.mode_aware_reboot() |
| self.check_state((self.checkers.crossystem_checker, { |
| 'wpsw_boot': '0', |
| 'wpsw_cur': '0', |
| })) |
| logging.info('Enable write-protect again to observe final transition.') |
| self.set_hardware_write_protect(True) |
| self.check_state((self.checkers.crossystem_checker, { |
| 'wpsw_boot': '0', |
| 'wpsw_cur': '1', |
| })) |
