1 #!/usr/bin/python 2 # 3 # Copyright (c) 2013 The Chromium Authors. All rights reserved. 4 # Use of this source code is governed by a BSD-style license that can be 5 # found in the LICENSE file. 6 7 import logging, os 8 from autotest_lib.client.bin import test, utils 9 from autotest_lib.client.common_lib import error 10 from autotest_lib.client.cros.power import power_utils 11 12 class security_SMMLocked(test.test): 13 """ 14 Verify SMM has SMRAM unmapped and that the SMM registers are locked. 15 """ 16 version = 1 17 executable = 'smm' 18 19 def setup(self): 20 os.chdir(self.srcdir) 21 utils.make(self.executable) 22 23 def run_once(self): 24 errors = 0 25 cpu_arch = utils.get_cpu_arch() 26 if cpu_arch == "arm": 27 logging.debug('ok: skipping SMM test for %s.', cpu_arch) 28 return 29 30 cpu_arch = power_utils.get_x86_cpu_arch() 31 if cpu_arch == 'Stoney': 32 # The SMM registers (MSRC001_0112 and MSRC001_0113) can be 33 # locked from being altered by setting MSRC001_0015[SmmLock]. 34 # Bit 0 : 1=SMM code in the ASeg and TSeg range and the SMM 35 # registers are read-only and SMI interrupts are 36 # not intercepted in SVM for Stoney. 37 Stoney_SMMLock = {'0xc0010015': [('0', 1)]} 38 self._registers = power_utils.Registers() 39 errors = self._registers.verify_msr(Stoney_SMMLock) 40 else: 41 r = utils.run("%s/%s" % (self.srcdir, self.executable), 42 stdout_tee=utils.TEE_TO_LOGS, 43 stderr_tee=utils.TEE_TO_LOGS, 44 ignore_status=True) 45 if r.exit_status != 0 or len(r.stderr) > 0: 46 raise error.TestFail(r.stderr) 47 if 'skipping' in r.stdout: 48 logging.debug(r.stdout) 49 return 50 if 'ok' not in r.stdout: 51 raise error.TestFail(r.stdout) 52 if errors: 53 logging.error('Test Failed for %s', cpu_arch) 54 raise error.TestFail(r.stdout) 55
