| # Copyright (c) 2011 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_CorruptBothFwSigAB(FirmwareTest): |
| """ |
| Servo based both firmware signature A and B corruption 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 corrupts |
| both firmware signature A and B. On next reboot, the firmware verification |
| fails and enters recovery mode. This test then checks the success of the |
| recovery boot. |
| """ |
| version = 1 |
| |
| def initialize(self, host, cmdline_args, dev_mode=False): |
| """Initialize the test""" |
| super(firmware_CorruptBothFwSigAB, 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): |
| """Cleanup the test""" |
| try: |
| if self.is_firmware_saved(): |
| self.restore_firmware() |
| except Exception as e: |
| logging.error("Caught exception: %s", str(e)) |
| super(firmware_CorruptBothFwSigAB, self).cleanup() |
| |
| def run_once(self, dev_mode=False): |
| """Runs a single iteration of the test.""" |
| logging.info("Corrupt both firmware signature A and B.") |
| self.check_state((self.checkers.crossystem_checker, { |
| 'mainfw_type': 'developer' if dev_mode else 'normal', |
| })) |
| self.faft_client.bios.corrupt_sig('a') |
| self.faft_client.bios.corrupt_sig('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 set fwb_tries flag.") |
| self.check_state((self.checkers.crossystem_checker, { |
| 'mainfw_type': 'recovery', |
| 'recovery_reason': ( |
| vboot.RECOVERY_REASON['RO_INVALID_RW'], |
| vboot.RECOVERY_REASON['RW_VERIFY_KEYBLOCK']), |
| })) |
| self.faft_client.system.set_try_fw_b() |
| |
| self.servo.switch_usbkey('host') |
| self.switcher.simple_reboot(sync_before_boot=False) |
| self.switcher.bypass_rec_mode() |
| self.switcher.wait_for_client() |
| |
| logging.info("Still expected recovery boot and restore firmware.") |
| self.check_state((self.checkers.crossystem_checker, { |
| 'mainfw_type': 'recovery', |
| 'recovery_reason': ( |
| vboot.RECOVERY_REASON['RO_INVALID_RW'], |
| vboot.RECOVERY_REASON['RW_VERIFY_KEYBLOCK']), |
| })) |
| self.faft_client.bios.restore_sig('a') |
| self.faft_client.bios.restore_sig('b') |
| self.switcher.mode_aware_reboot() |
| |
| logging.info("Expected normal boot, done.") |
| |
| if self.faft_config.clear_dev_on_rec: |
| dev_mode=False |
| |
| self.check_state((self.checkers.crossystem_checker, { |
| 'mainfw_type': 'developer' if dev_mode else 'normal', |
| })) |
