73 lines
2.7 KiB
Python
73 lines
2.7 KiB
Python
# Copyright 2014 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.faft.firmware_test import FirmwareTest
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class firmware_TPMKernelVersion(FirmwareTest):
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"""Dev mode will not corrupt kernel and firmware version stored in the TPM.
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Automate 1.2.4 Check Kernel version in TPM is not corrupted.
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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):
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"""Initialize the test"""
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super(firmware_TPMKernelVersion, self).initialize(host, cmdline_args)
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self.switcher.setup_mode('dev')
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# Use the USB key for Ctrl-U dev boot, not recovery.
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self.setup_usbkey(usbkey=True, host=False, used_for_recovery=False)
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self.original_dev_boot_usb = self.faft_client.system.get_dev_boot_usb()
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logging.info('Original dev_boot_usb value: %s',
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str(self.original_dev_boot_usb))
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def dut_run_cmd(self, command):
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"""Execute command on DUT.
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@param command: shell command to be executed on DUT.
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@returns command output.
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"""
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logging.info('Execute %s', command)
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output = self.faft_client.system.run_shell_command_get_output(command)
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logging.info('Output %s', output)
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return output
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def cleanup(self):
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"""Reboot device from SSD."""
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try:
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self.ensure_dev_internal_boot(self.original_dev_boot_usb)
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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_TPMKernelVersion, self).cleanup()
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def run_once(self):
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"""Main test logic"""
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# Get the kernel version and its datakey version.
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# TODO(twreid): Verify the results.
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version = self.faft_client.tpm.get_kernel_version()
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logging.info('Kernel version: %d', version)
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version = self.faft_client.tpm.get_kernel_datakey_version()
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logging.info('Kernel datakey version: %d', version)
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self.dut_run_cmd('crossystem kernkey_vfy dev_boot_usb')
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# Boot CrOS from USB
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self.faft_client.system.set_dev_boot_usb(1)
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self.switcher.simple_reboot()
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self.switcher.bypass_dev_boot_usb()
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self.switcher.wait_for_client()
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# Check that DUT is booted from USB.
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self.check_state((self.checkers.dev_boot_usb_checker, (True, True),
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'Device not booted from USB image properly.'))
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out = self.dut_run_cmd('crossystem tpm_kernver tpm_fwver')
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(kernver, fwver) = out[0].split(' ')
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logging.info('tpm_kernver=%s tpm_fwver=%s', kernver, fwver)
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assert kernver.lower() != '0xffffffff'
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assert fwver.lower() != '0xffffffff'
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