def run(self): t = time() try: self._cmos = CMOS(self.cs) except CmosRuntimeError, msg: print msg return
def run(self): if len(self.argv) < 3: print CMOSCommand.__doc__ return try: _cmos = CMOS(self.cs) except CmosRuntimeError, msg: print msg return
def cmos(argv): if 3 > len(argv): print usage return try: cmos = CMOS() except CmosRuntimeError, msg: print msg return
def run(self): t = time() try: self._cmos = CMOS(self.cs) except CmosRuntimeError as msg: print(msg) return self.func() self.logger.log("[CHIPSEC] (cmos) time elapsed {:.3f}".format(time() - t))
def cmos(argv): """ >>> chipsec_util cmos dump >>> chipsec_util cmos readl|writel|readh|writeh <byte_offset> [byte_val] Examples: >>> chipsec_util cmos dump >>> chipsec_util cmos rl 0x0 >>> chipsec_util cmos wh 0x0 0xCC """ if 3 > len(argv): print cmos.__doc__ return try: _cmos = CMOS() except CmosRuntimeError, msg: print msg return
def __init__(self): BaseModule.__init__(self) self.cmos = CMOS(self.cs) self.user_request = False self.test_offset = 0x38 self.test_value = 0xAA
class rtclock(BaseModule): def __init__(self): BaseModule.__init__(self) self.cmos = CMOS(self.cs) self.user_request = False self.test_offset = 0x38 self.test_value = 0xAA def is_supported(self): if self.cs.is_core() or (self.cs.get_chipset_code() == CHIPSET_CODE_AVN): return True self.logger.log_important('Not a Core platform. Skipping check.') self.res = ModuleResult.NOTAPPLICABLE return False def check_rtclock(self): self.logger.start_test("Protected RTC memory locations") ll = ul = 0 check_config_regs = self.cs.read_register('RC') != 0xFFFFFFFF if check_config_regs: rc_reg = self.cs.read_register('RC') self.cs.print_register('RC', rc_reg) ll = self.cs.get_register_field('RC', rc_reg, 'LL') ul = self.cs.get_register_field('RC', rc_reg, 'UL') elif self.user_request: self.logger.warn( 'Writing to CMOS to determine write protection (original values will be restored)' ) # Try to modify the low RTC memory regions. original_val = self.cmos.read_cmos_low(self.test_offset) self.cmos.write_cmos_low(self.test_offset, original_val ^ self.test_value) if original_val == self.cmos.read_cmos_low(self.test_offset): ll = 1 else: self.logger.warn('Restoring original value') self.cmos.write_cmos_low(self.test_offset, original_val) # Try to modify the upper RTC memory regions. original_val = self.cmos.read_cmos_high(self.test_offset) self.cmos.write_cmos_high(self.test_offset, original_val ^ self.test_value) if original_val == self.cmos.read_cmos_high(self.test_offset): ul = 1 else: self.logger.warn('Restoring original value') self.cmos.write_cmos_high(self.test_offset, original_val) else: self.logger.warn( "Unable to test lock bits without attempting to modify CMOS.") self.logger.log( "[*] Run chipsec_main manually with the following commandline flags." ) self.logger.log( "[*] python chipsec_main -m common.rtclock -a modify") return ModuleResult.WARNING if ll == 1: self.logger.log_good( "Protected bytes (0x38-0x3F) in low 128-byte bank of RTC memory are locked" ) else: self.logger.log_bad( "Protected bytes (0x38-0x3F) in low 128-byte bank of RTC memory are not locked" ) if ul == 1: self.logger.log_good( "Protected bytes (0x38-0x3F) in high 128-byte bank of RTC memory are locked" ) else: self.logger.log_bad( "Protected bytes (0x38-0x3F) in high 128-byte bank of RTC memory are not locked" ) if ll == 1 and ul == 1: res = ModuleResult.PASSED self.logger.log_passed( "Protected locations in RTC memory are locked") else: res = ModuleResult.WARNING self.logger.log_warning( "Protected locations in RTC memory are accessible (BIOS may not be using them)" ) return res # -------------------------------------------------------------------------- # run( module_argv ) # Required function: run here all tests from this module # -------------------------------------------------------------------------- def run(self, module_argv): if len(module_argv) >= 1: if module_argv[0].lower() == 'modify': self.user_request = True self.res = self.check_rtclock() return self.res