| # 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.faft.firmware_test import FirmwareTest |
| |
| |
| class firmware_CorruptKernelB(FirmwareTest): |
| """ |
| Servo based kernel B corruption test. |
| |
| This test sets kernel B boot and then corrupts kernel B. The firmware |
| verifies kernel B failed so falls back to kernel A boot. This test will |
| fail if kernel verification mis-behaved. |
| """ |
| version = 1 |
| |
| def initialize(self, host, cmdline_args, dev_mode=False): |
| super(firmware_CorruptKernelB, self).initialize(host, cmdline_args) |
| self.backup_kernel() |
| self.backup_cgpt_attributes() |
| self.switcher.setup_mode('dev' if dev_mode else 'normal') |
| self.setup_usbkey(usbkey=False) |
| self.setup_kernel('a') |
| |
| def cleanup(self): |
| try: |
| self.restore_cgpt_attributes() |
| self.restore_kernel() |
| except Exception as e: |
| logging.error("Caught exception: %s", str(e)) |
| super(firmware_CorruptKernelB, self).cleanup() |
| |
| def run_once(self, dev_mode=False): |
| """Runs a single iteration of the test.""" |
| logging.info("Prioritize kernel B.") |
| self.check_state((self.checkers.root_part_checker, 'a')) |
| self.reset_and_prioritize_kernel('b') |
| self.switcher.mode_aware_reboot() |
| |
| logging.info("Expected kernel B boot and corrupt kernel B.") |
| self.check_state((self.checkers.root_part_checker, 'b')) |
| self.faft_client.kernel.corrupt_sig('b') |
| self.switcher.mode_aware_reboot() |
| |
| logging.info("Expected kernel A boot and restore kernel B.") |
| self.check_state((self.checkers.root_part_checker, 'a')) |
| self.faft_client.kernel.restore_sig('b') |
| self.switcher.mode_aware_reboot() |
| |
| logging.info("Expected kernel B boot and prioritize kerenl A.") |
| self.check_state((self.checkers.root_part_checker, 'b')) |
| self.reset_and_prioritize_kernel('a') |
| self.switcher.mode_aware_reboot() |
| |
| logging.info("Expected kernel A boot.") |
| self.check_state((self.checkers.root_part_checker, 'a')) |
