# Copyright 2012 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

from autotest_lib.server import utils

AUTHOR = "ChromeOS Team"
NAME = "firmware_RollbackKernel"
METADATA = {
        "contacts": ["chromeos-faft@google.com", "jbettis@chromium.org"],
        "bug_component": "b:792402", # ChromeOS > Platform > Enablement > Firmware > FAFT
        "criteria": "Servo based kernel rollback test",
        "requirements": ["sys-fw-0021-v01", "sys-fw-0024-v01", "sys-fw-0025-v01"],
}
ATTRIBUTES = "suite:faft_bios, suite:faft_bios_ro_qual, suite:faft_bios_rw_qual, suite:faft_lv3"
DEPENDENCIES = "servo_state:WORKING, servo_usb_state:NORMAL"
TIME = "SHORT"
TEST_TYPE = "server"
JOB_RETRIES = 0

DOC = """
This test requires a USB disk plugged-in, which contains a ChromeOS test
image (built by "build_image --test"). In normal mode, this test rollbacks
kernel A and results kernel B boot. It then rollbacks kernel B and
results recovery boot. In developer mode, the firmware ignores kernel
rollback check so it remains unchanged.
"""

args_dict = utils.args_to_dict(args)
servo_args = hosts.CrosHost.get_servo_arguments(args_dict)

def run_rollbackkernel(machine):
    host = hosts.create_host(machine, servo_args=servo_args)
    job.run_test("firmware_RollbackKernel", host=host, cmdline_args=args,
                 disable_sysinfo=True, dev_mode=False)

parallel_simple(run_rollbackkernel, machines)