| # 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_CorruptBothKernelAB(FirmwareTest): |
| """ |
| Servo based both kernel 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 kernel A and B. On next reboot, the kernel verification fails |
| and enters recovery mode. This test then checks the success of the |
| recovery boot. |
| """ |
| version = 1 |
| |
| def ensure_kernel_on_non_recovery(self, part): |
| """Ensure the requested kernel part on normal/dev boot path. |
| |
| If not, it may be a test failure during step 2, try to recover to |
| the requested kernel on normal/dev mode by recovering the whole OS |
| and rebooting. |
| |
| @param part: the expected kernel partition number. |
| """ |
| if not self.check_root_part_on_non_recovery(part): |
| logging.info('Recover the disk OS by running chromeos-install...') |
| self.faft_client.system.run_shell_command('chromeos-install --yes') |
| self.switcher.mode_aware_reboot() |
| |
| def initialize(self, host, cmdline_args, dev_mode=False): |
| """Initialize the test""" |
| super(firmware_CorruptBothKernelAB, 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=True, host=False) |
| self.setup_kernel('a') |
| |
| def cleanup(self): |
| """Cleanup the test""" |
| try: |
| self.ensure_kernel_on_non_recovery('a') |
| self.restore_cgpt_attributes() |
| self.restore_kernel() |
| except Exception as e: |
| logging.error("Caught exception: %s", str(e)) |
| super(firmware_CorruptBothKernelAB, self).cleanup() |
| |
| def run_once(self, dev_mode=False): |
| """Main test logic""" |
| recovery_reason = (vboot.RECOVERY_REASON['DEP_RW_NO_DISK'], |
| vboot.RECOVERY_REASON['RW_NO_KERNEL'], |
| vboot.RECOVERY_REASON['RW_INVALID_OS']) |
| |
| logging.info("Corrupt kernel A and B.") |
| self.check_state((self.check_root_part_on_non_recovery, 'a')) |
| self.faft_client.kernel.corrupt_sig('a') |
| self.faft_client.kernel.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.mode_aware_reboot(wait_for_dut_up=False) |
| self.switcher.bypass_rec_mode() |
| self.switcher.wait_for_client() |
| |
| logging.info("Expected recovery boot and restore the OS image.") |
| self.check_state((self.checkers.crossystem_checker, { |
| 'mainfw_type': 'recovery', |
| 'recovery_reason': recovery_reason, |
| })) |
| self.faft_client.kernel.restore_sig('a') |
| self.faft_client.kernel.restore_sig('b') |
| self.switcher.mode_aware_reboot() |
| |
| logging.info("Expected kernel A normal/dev boot.") |
| self.check_state((self.check_root_part_on_non_recovery, 'a')) |
