| # 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): |
| super(firmware_CorruptBothFwSigAB, self).initialize(host, cmdline_args) |
| self.backup_firmware() |
| self.setup_dev_mode(dev_mode) |
| self.setup_usbkey(usbkey=True, host=False) |
| |
| def cleanup(self): |
| self.restore_firmware() |
| super(firmware_CorruptBothFwSigAB, self).cleanup() |
| |
| def run_once(self, dev_mode=False): |
| 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', 'b'),) |
| self.reboot_warm(wait_for_dut_up=False) |
| if not dev_mode: |
| self.wait_fw_screen_and_plug_usb() |
| self.wait_for_client(install_deps=True) |
| |
| 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.reboot_warm(wait_for_dut_up=False) |
| if not dev_mode: |
| self.wait_fw_screen_and_plug_usb() |
| self.wait_for_client(install_deps=False) |
| |
| 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', 'b'),) |
| self.reboot_warm() |
| |
| logging.info("Expected normal boot, done.") |
| self.check_state((self.checkers.crossystem_checker, { |
| 'mainfw_type': 'developer' if dev_mode else 'normal', |
| })) |
