72 lines
2.9 KiB
Python
72 lines
2.9 KiB
Python
# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import logging
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from autotest_lib.server.cros import vboot_constants as vboot
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from autotest_lib.server.cros.faft.firmware_test import FirmwareTest
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class firmware_RollbackFirmware(FirmwareTest):
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"""
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Servo based firmware rollback test.
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This test requires a USB disk plugged-in, which contains a Chrome OS test
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image (built by "build_image --test"). On runtime, this test rollbacks
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firmware A and results firmware B boot. It then rollbacks firmware B and
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results recovery boot.
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"""
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version = 1
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NEEDS_SERVO_USB = True
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def initialize(self, host, cmdline_args, dev_mode=False):
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"""Initialize the test"""
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super(firmware_RollbackFirmware, self).initialize(host, cmdline_args)
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self.backup_firmware()
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self.switcher.setup_mode('dev' if dev_mode else 'normal')
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self.setup_usbkey(usbkey=True, host=False)
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def cleanup(self):
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"""Cleanup the test"""
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try:
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if self.is_firmware_saved():
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self.restore_firmware()
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except Exception as e:
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logging.error("Caught exception: %s", str(e))
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super(firmware_RollbackFirmware, self).cleanup()
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def run_once(self, dev_mode=False):
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"""Runs a single iteration of the test."""
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logging.info("Rollback firmware A.")
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self.check_state((self.checkers.fw_tries_checker, 'A'))
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self.faft_client.bios.move_version_backward('a')
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self.switcher.mode_aware_reboot()
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logging.info("Expected firmware B boot and rollback firmware B.")
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self.check_state((self.checkers.fw_tries_checker, ('B', False)))
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self.faft_client.bios.move_version_backward('b')
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# Older devices (without BROKEN screen) didn't wait for removal in
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# dev mode. Make sure the USB key is not plugged in so they won't
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# start booting immediately and get interrupted by unplug/replug.
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self.servo.switch_usbkey('host')
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self.switcher.simple_reboot()
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self.switcher.bypass_rec_mode()
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self.switcher.wait_for_client()
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logging.info("Expected recovery boot and restores firmware A and B.")
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self.check_state((self.checkers.crossystem_checker, {
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'mainfw_type': 'recovery',
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'recovery_reason': (
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vboot.RECOVERY_REASON['RO_INVALID_RW'],
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vboot.RECOVERY_REASON['RW_FW_ROLLBACK']),
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}))
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self.faft_client.bios.move_version_forward('a')
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self.faft_client.bios.move_version_forward('b')
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self.switcher.mode_aware_reboot()
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expected_slot = 'B' if self.fw_vboot2 else 'A'
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logging.info("Expected firmware %s boot, done.", expected_slot)
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self.check_state((self.checkers.fw_tries_checker, expected_slot))
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