| #!/usr/bin/python |
| # |
| # Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| import logging, os |
| from autotest_lib.client.bin import test, utils |
| from autotest_lib.client.common_lib import error |
| from autotest_lib.client.cros.power import power_utils |
| |
| class security_SMMLocked(test.test): |
| """ |
| Verify SMM has SMRAM unmapped and that the SMM registers are locked. |
| """ |
| version = 1 |
| executable = 'smm' |
| |
| def setup(self): |
| os.chdir(self.srcdir) |
| utils.make(self.executable) |
| |
| def run_once(self): |
| errors = 0 |
| cpu_arch = utils.get_cpu_arch() |
| if cpu_arch == "arm": |
| logging.debug('ok: skipping SMM test for %s.', cpu_arch) |
| return |
| |
| cpu_arch = power_utils.get_x86_cpu_arch() |
| if cpu_arch == 'Stoney': |
| # The SMM registers (MSRC001_0112 and MSRC001_0113) can be |
| # locked from being altered by setting MSRC001_0015[SmmLock]. |
| # Bit 0 : 1=SMM code in the ASeg and TSeg range and the SMM |
| # registers are read-only and SMI interrupts are |
| # not intercepted in SVM for Stoney. |
| Stoney_SMMLock = {'0xc0010015': [('0', 1)]} |
| self._registers = power_utils.Registers() |
| errors = self._registers.verify_msr(Stoney_SMMLock) |
| else: |
| r = utils.run("%s/%s" % (self.srcdir, self.executable), |
| stdout_tee=utils.TEE_TO_LOGS, |
| stderr_tee=utils.TEE_TO_LOGS, |
| ignore_status=True) |
| if r.exit_status != 0 or len(r.stderr) > 0: |
| raise error.TestFail(r.stderr) |
| if 'skipping' in r.stdout: |
| logging.debug(r.stdout) |
| return |
| if 'ok' not in r.stdout: |
| raise error.TestFail(r.stdout) |
| if errors: |
| logging.error('Test Failed for %s', cpu_arch) |
| raise error.TestFail(r.stdout) |