| # 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_CorruptBothFwBodyAB(FirmwareTest): |
| """ |
| Servo based both firmware body A and B corruption test. |
| |
| The expected behavior is different if the firmware preamble USE_RO_NORMAL |
| flag is enabled. In the case USE_RO_NORMAL ON, the firmware corruption |
| doesn't hurt the boot results since it boots the RO path directly and does |
| not load and verify the RW firmware body. In the case USE_RO_NORMAL OFF, |
| the firmware verification fails on loading RW firmware and enters recovery |
| mode. In this case, it requires a USB disk plugged-in, which contains a |
| Chrome OS test image (built by "build_image --test"). |
| """ |
| version = 1 |
| |
| use_ro = False |
| |
| def initialize(self, host, cmdline_args, dev_mode=False): |
| super(firmware_CorruptBothFwBodyAB, self).initialize(host, cmdline_args) |
| self.backup_firmware() |
| if (self.faft_client.bios.get_preamble_flags('a') & |
| vboot.PREAMBLE_USE_RO_NORMAL): |
| self.use_ro = True |
| self.switcher.setup_mode('dev' if dev_mode else 'normal') |
| else: |
| 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_CorruptBothFwBodyAB, self).cleanup() |
| |
| def run_once(self, dev_mode=False): |
| if self.use_ro: |
| # USE_RO_NORMAL flag is ON. Firmware body corruption doesn't |
| # hurt the booting results. |
| logging.info('The firmware USE_RO_NORMAL flag is enabled.') |
| logging.info("Corrupt both firmware body A and B.") |
| self.check_state((self.checkers.crossystem_checker, { |
| 'mainfw_type': 'developer' if dev_mode else 'normal', |
| })) |
| self.faft_client.bios.corrupt_body(('a', 'b')) |
| self.switcher.mode_aware_reboot() |
| |
| logging.info("Still expected normal/developer boot and restore.") |
| self.check_state((self.checkers.crossystem_checker, { |
| 'mainfw_type': 'developer' if dev_mode else 'normal', |
| })) |
| self.faft_client.bios.restore_body(('a', 'b')) |
| else: |
| logging.info("Corrupt both firmware body A and B.") |
| self.check_state((self.checkers.crossystem_checker, { |
| 'mainfw_type': 'developer' if dev_mode else 'normal', |
| })) |
| self.faft_client.bios.corrupt_body(('a', 'b')) |
| self.switcher.simple_reboot() |
| if not dev_mode: |
| self.switcher.bypass_rec_mode() |
| self.switcher.wait_for_client() |
| |
| logging.info("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_BODY']), |
| })) |
| self.faft_client.bios.restore_body(('a', 'b')) |
| self.switcher.mode_aware_reboot() |
| |
| logging.info("Expected normal boot, done.") |
| self.check_state((self.checkers.crossystem_checker, { |
| 'mainfw_type': 'developer' if dev_mode else 'normal', |
| })) |
