| # Copyright 2019 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 |
| import re |
| import time |
| |
| from autotest_lib.client.common_lib import error |
| from autotest_lib.server.cros.faft.cr50_test import Cr50Test |
| |
| |
| class firmware_Cr50WPG3(Cr50Test): |
| """Verify WP in G3.""" |
| version = 1 |
| |
| WAIT_FOR_STATE = 10 |
| WP_REGEX = r'write protect is ((en|dis)abled)\.' |
| FLASHROM_WP_CMD = ('sudo flashrom -p raiden_debug_spi:target=AP,serial=%s ' |
| '--wp-status') |
| |
| def cleanup(self): |
| """Reenable servo wp.""" |
| self.cr50.send_command('rddkeepalive disable') |
| self.cr50.send_command('ccdblock IGNORE_SERVO disable') |
| self.servo.enable_main_servo_device() |
| try: |
| if hasattr(self, '_start_fw_wp_vref'): |
| self.servo.set_nocheck('fw_wp_state', self._start_fw_wp_state) |
| self.servo.set_nocheck('fw_wp_vref', self._start_fw_wp_vref) |
| finally: |
| super(firmware_Cr50WPG3, self).cleanup() |
| |
| |
| def generate_flashrom_wp_cmd(self): |
| """Use the cr50 serialname to generate the flashrom command.""" |
| self._flashrom_wp_cmd = self.FLASHROM_WP_CMD % self.cr50.get_serial() |
| |
| |
| def get_wp_state(self): |
| """Returns 'on' if write protect is enabled. 'off' if it's disabled.""" |
| flashrom_output = self.servo.system_output(self._flashrom_wp_cmd) |
| match = re.search(self.WP_REGEX, flashrom_output) |
| logging.info('WP is %s', match.group(1) if match else 'UKNOWN') |
| logging.info('flashrom output\n%s', flashrom_output) |
| if not match: |
| raise error.TestError('Unable to find WP status in flashrom output') |
| return match.group(1) |
| |
| |
| def run_once(self): |
| """Verify WP in G3.""" |
| if self.check_cr50_capability(['wp_on_in_g3'], suppress_warning=True): |
| raise error.TestNAError('WP not pulled up in G3') |
| if not self.servo.dts_mode_is_valid(): |
| raise error.TestNAError('Type-C servo v4 required to check wp.') |
| try: |
| self.cr50.ccd_enable(True) |
| except: |
| raise error.TestNAError('CCD required to check wp.') |
| self.generate_flashrom_wp_cmd() |
| |
| self.fast_ccd_open(True) |
| # faft-cr50 runs with servo micro and type c servo v4. Use ccdblock to |
| # get cr50 to ignore the fact servo is connected and allow the test to |
| # use ccd to check wp status. |
| self.cr50.send_command('ccdblock IGNORE_SERVO enable') |
| self.cr50.send_command('rddkeepalive enable') |
| self.cr50.get_ccdstate() |
| |
| if self.servo.main_device_is_flex(): |
| self._start_fw_wp_state = self.servo.get('fw_wp_state') |
| self._start_fw_wp_vref = self.servo.get('fw_wp_vref') |
| # Stop forcing wp using servo, so we can set it with ccd. |
| self.servo.set_nocheck('fw_wp_state', 'reset') |
| self.servo.set_nocheck('fw_wp_vref', 'off') |
| |
| # disable write protect |
| self.cr50.send_command('wp disable atboot') |
| |
| # Verify we can see it's disabled. This should always work. If it |
| # doesn't, it may be a setup issue. |
| logging.info('Checking WP from DUT') |
| if self.checkers.crossystem_checker({'wpsw_cur': '1'}): |
| raise error.TestError("WP isn't disabled in S0") |
| |
| self.faft_client.system.run_shell_command('poweroff') |
| time.sleep(self.WAIT_FOR_STATE) |
| if hasattr(self, 'ec'): |
| self.ec.send_command('hibernate') |
| time.sleep(self.WAIT_FOR_STATE) |
| |
| servo_wp_g3 = self.get_wp_state() |
| self._try_to_bring_dut_up() |
| # Some boards don't power the EC_WP signal in G3, so it can't be |
| # disabled by cr50 in G3. |
| if servo_wp_g3 == 'enabled': |
| raise error.TestFail("WP can't be disabled by Cr50 in G3") |
