Home | History | Annotate | Download | only in firmware_FWtries 
      1 # Copyright 2014 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 from autotest_lib.server.cros.faft.firmware_test import FirmwareTest
      6 
      7 
      8 class firmware_FWtries(FirmwareTest):
      9     """
     10     Boot with firmware B until fwb_tries/fw_try_count counts down to
     11     0.  vboot1 only needs to set fwb_tries in order to boot into FWB,
     12     but vboot2 needs to set two fields: fw_try_next and fw_try_count
     13     in order to do so.
     14 
     15     Setup Steps:
     16     1. Make the device in normal/dev mode.
     17 
     18     Test Steps:
     19     2. Set # of tries to 2 (through try_fwb)
     20       a.  For vboot1:
     21         set fwb_tries=2
     22         [fwb_tries can be > 0 and <= 15. Value will be auto reset to 15 If
     23         the value is < 0 or > 15
     24       b.  For vboot2:
     25         set fw_try_next=B fw_try_count=2
     26     3. Reboot 1
     27     4. Reboot 2
     28     5. Reboot 3
     29 
     30     Verification Steps:
     31     1. After reboot 1, fw_tries_checker checks that
     32     mainfw_act = B
     33     fwb_tries/fw_try_count = 1
     34 
     35     2. After reboot 2, fw_tries_checker checks that
     36     mainfw_act = B
     37     fwb_tries/fw_try_count = 0
     38 
     39     3. After reboot 3, fw_tries_checker
     40     mainfw_act = A
     41     fwb_tries/fw_try_count = 0
     42     """
     43 
     44     version = 1
     45 
     46     def initialize(self, host, cmdline_args, dev_mode=False):
     47         super(firmware_FWtries, self).initialize(host, cmdline_args)
     48         self.switcher.setup_mode('dev' if dev_mode else 'normal')
     49 
     50     def run_once(self, host):
     51         self.check_state((self.checkers.fw_tries_checker, ('A', True, 0)))
     52 
     53         self.try_fwb(2);
     54 
     55         self.check_state((self.checkers.fw_tries_checker, ('A', True, 2)))
     56         self.switcher.mode_aware_reboot()
     57         if self.faft_client.system.has_host():
     58             # Android: Does not have chromeos mechanism to block init file from
     59             # resetting try_count to 0 if in testing mode, so we just need to
     60             # check if we successfully booted into B
     61             self.check_state((self.checkers.fw_tries_checker, ('B', True, 0)))
     62             self.switcher.mode_aware_reboot()
     63             self.check_state((self.checkers.fw_tries_checker, ('B', True, 0)))
     64         else:
     65             # ChromeOS: Blocks init file on bootup from setting try_count to 0
     66             # Thus, each reboot is never successful, thus when try_count
     67             # decrements to 0, will reboot into FW A due to failure
     68             self.check_state((self.checkers.fw_tries_checker, ('B', True, 1)))
     69             self.switcher.mode_aware_reboot()
     70             self.check_state((self.checkers.fw_tries_checker, ('B', True, 0)))
     71             self.switcher.mode_aware_reboot()
     72             self.check_state((self.checkers.fw_tries_checker, ('A', True, 0)))
     73