1 # Copyright 2016 The Chromium OS Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 import common 6 from autotest_lib.server import test 7 8 class infra_FirmwareAutoupdate(test.test): 9 """ 10 Update RW firmware in the target DUT. 11 12 In production, consumer devices periodically update their read/write 13 firmware during auto-update cycles. This happens when the firmware 14 bundled with a newly update image is different from the firmware 15 currently installed on the device. 16 17 In the test lab, this step is suppressed, to prevent devices from 18 inadvertently updating to a new firmware version as a consequence of 19 installing a new Chrome OS build for testing. In particular, 20 because the firmware is updated whenever the bundled firmware is 21 _different_, and not merely _more recent_, suppressing the update 22 prevents unexpectedly downgrading the firmware. 23 24 Nonetheless, we sometimes want more recent firmware on a DUT than 25 the image that was delivered from the factory. This test allows 26 updating the firmware to the installed firmware bundle, using the 27 same procedure as is used during autoupdate. 28 """ 29 version = 1 30 31 def run_once(self, host): 32 host.run('chromeos-firmwareupdate --mode=autoupdate') 33 host.reboot() 34
