| # Copyright (c) 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 random |
| import time |
| |
| from autotest_lib.client.common_lib import error |
| from autotest_lib.server.cros.faft.firmware_test import FirmwareTest |
| |
| # Serial number cannot contain vowels after the first character, so don't allow |
| # any vowels in this test. |
| VALID_CHARS = "BCDFGHJKLMNPQRSTVWXYZ0123456789" |
| |
| class firmware_SetSerialNumber(FirmwareTest): |
| """ |
| Servo based test to set serial number in firmware. |
| |
| Test that setting the serial number in firmware during an onsite RMA works. |
| Mainboards for onsite RMA will have WP# asserted, flash WP bit cleared, |
| the serial_number in VPD set to all spaces, and be in dev mode. After the |
| serial number is set in firmware flash write protect will be enabled and |
| the device will be in normal mode. |
| """ |
| version = 1 |
| |
| def start_serial_number_prompt(self): |
| """Repeatedly press ctrl-s to bring up serial number prompt.""" |
| logging.info("Pressing Ctrl-S.") |
| timeout = time.time() + (self.faft_config.firmware_screen) |
| while time.time() < timeout: |
| self.servo.set_nocheck('ctrl_s', 'tab') |
| time.sleep(1) |
| |
| def generate_serial_number_string(self): |
| """Generate a valid serial number based on config""" |
| return ''.join(random.choice(VALID_CHARS) |
| for _ in range(self.faft_config.serial_number_length)) |
| |
| def send_string(self, keys): |
| """Send a string over a servo""" |
| for key in keys.lower(): |
| self.servo.set_nocheck('arb_key_config', key) |
| self.servo.set_nocheck('arb_key', 'tab') |
| |
| def initialize(self, host, cmdline_args): |
| super(firmware_SetSerialNumber, self).initialize(host, cmdline_args) |
| |
| if self.faft_config.serial_number_length == 0: |
| raise error.TestNAError("This test is only valid on devices where " |
| "serial number can be set in firmware.") |
| |
| # This test is run on developer mode only. |
| self.switcher.setup_mode('dev') |
| |
| # Disable fw wp to clear VPD value |
| self.set_hardware_write_protect(False) |
| |
| self.faft_client.system.run_shell_command_get_output( |
| 'flashrom -p host --wp-disable') |
| |
| self.faft_client.system.run_shell_command_get_output( |
| 'vpd -i RO_VPD -s serial_number="%s"' % |
| (' ' * self.faft_config.serial_number_length) |
| ) |
| |
| self.set_hardware_write_protect(True) |
| |
| def run_once(self): |
| """Run the test""" |
| serial_number = self.generate_serial_number_string() |
| logging.info("Setting serial number to '%s'.", serial_number) |
| |
| self.switcher.simple_reboot() |
| self.start_serial_number_prompt() |
| self.send_string(serial_number) |
| # Press enter on set |
| self.servo.enter_key() |
| # Press enter on confirm |
| self.servo.enter_key() |
| self.switcher.wait_for_client() |
| |
| # Check that device is no longer in dev mode |
| self.checkers.mode_checker('normal') |
| |
| # Check that serial_number is correctly set |
| result = self.faft_client.system.run_shell_command_get_output( |
| 'vpd -i RO_VPD -g serial_number')[0] |
| |
| if result != serial_number: |
| raise error.TestFail("Expected serial number '%s' but got '%s'" % ( |
| serial_number, result)) |
| |
| # Check that write protect is correctly set |
| result = self.faft_client.system.run_shell_command_get_output( |
| 'flashrom -p host --wp-status') |
| |
| result = '\n'.join(result) |
| |
| if ('is disabled' in result or |
| 'start=0x00000000' in result or |
| 'len=0x00000000' in result): |
| raise error.TestFail('Expected write protection to be enabled ' |
| 'but output was:\n\n%s' % result) |
| |
| def cleanup(self): |
| self.servo.set_nocheck('fw_wp_state', 'reset') |
| super(firmware_SetSerialNumber, self).cleanup() |
