| # Copyright (c) 2012 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 import vboot_constants as vboot |
| from autotest_lib.server.cros.faft.firmware_test import FirmwareTest |
| |
| |
| class firmware_RollbackFirmware(FirmwareTest): |
| """ |
| Servo based firmware rollback test. |
| |
| This test requires a USB disk plugged-in, which contains a Chrome OS test |
| image (built by "build_image --test"). On runtime, this test rollbacks |
| firmware A and results firmware B boot. It then rollbacks firmware B and |
| results recovery boot. |
| """ |
| version = 1 |
| |
| def initialize(self, host, cmdline_args, dev_mode=False): |
| super(firmware_RollbackFirmware, self).initialize(host, cmdline_args) |
| self.backup_firmware() |
| self.switcher.setup_mode('dev' if dev_mode else 'normal') |
| self.setup_usbkey(usbkey=True, host=False) |
| |
| def cleanup(self): |
| try: |
| self.restore_firmware() |
| except Exception as e: |
| logging.error("Caught exception: %s", str(e)) |
| super(firmware_RollbackFirmware, self).cleanup() |
| |
| def run_once(self, dev_mode=False): |
| logging.info("Rollback firmware A.") |
| self.check_state((self.checkers.fw_tries_checker, 'A')) |
| self.faft_client.bios.move_version_backward('a') |
| self.switcher.mode_aware_reboot() |
| |
| logging.info("Expected firmware B boot and rollback firmware B.") |
| self.check_state((self.checkers.fw_tries_checker, ('B', False))) |
| self.faft_client.bios.move_version_backward('b') |
| |
| # Older devices (without BROKEN screen) didn't wait for removal in |
| # dev mode. Make sure the USB key is not plugged in so they won't |
| # start booting immediately and get interrupted by unplug/replug. |
| self.servo.switch_usbkey('host') |
| self.switcher.simple_reboot() |
| self.switcher.bypass_rec_mode() |
| self.switcher.wait_for_client() |
| |
| logging.info("Expected recovery boot and restores firmware A and B.") |
| self.check_state((self.checkers.crossystem_checker, { |
| 'mainfw_type': 'recovery', |
| 'recovery_reason': ( |
| vboot.RECOVERY_REASON['RO_INVALID_RW'], |
| vboot.RECOVERY_REASON['RW_FW_ROLLBACK']), |
| })) |
| self.faft_client.bios.move_version_forward(('a', 'b')) |
| self.switcher.mode_aware_reboot() |
| |
| expected_slot = 'B' if self.fw_vboot2 else 'A' |
| logging.info("Expected firmware " + expected_slot + " boot, done.") |
| self.check_state((self.checkers.fw_tries_checker, expected_slot)) |
