| # Copyright 2022 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.client.common_lib import error |
| from autotest_lib.server.cros.faft.firmware_test import FirmwareTest |
| |
| import logging |
| import time |
| |
| |
| class firmware_Cr50OpenTPMRstDebounce(FirmwareTest): |
| """Verify cr50 can open ccd when TPM_RST_L is debounced.""" |
| version = 1 |
| |
| BRDPROP_SYSRST = 'BOARD_NEEDS_SYS_RST_PULL_UP' |
| |
| def setup_tpm_rst_debouncing(self): |
| """Hold the device in reset and pulse sysrst to start tpmrst debouncing |
| |
| Use ecrst on to hold the device in reset and pulse sysrst to reset the |
| tpm. This test only runs on TPM_RST_L boards, so pulsing sysrst will |
| trigger tpm_rst_requests without the AP or EC. Cr50 should print that |
| resets are already scheduled. |
| """ |
| self.gsc.send_command('ecrst on') |
| time.sleep(self.gsc.SHORT_WAIT) |
| self.gsc.send_command('sysrst pulse') |
| time.sleep(self.gsc.SHORT_WAIT) |
| self.gsc.send_command_retry_get_output('sysrst pulse', |
| ['.*already scheduled']) |
| |
| def run_once(self, host): |
| """Check cr50 can open ccd when TPM_RST_L is debounced.""" |
| self.host = host |
| if not self.gsc.uses_board_property(self.BRDPROP_SYSRST): |
| raise error.TestNAError('Cannot run on pltrst board') |
| try: |
| self.fast_ccd_open(True) |
| self.gsc.ccd_reset_factory() |
| # Reset the DUT to reenable the TPM. |
| self.servo.get_power_state_controller().reset() |
| self.gsc.set_cap(self.gsc.CAP_SHORT_PP, self.gsc.CAP_IF_OPENED) |
| self.gsc.set_cap(self.gsc.CAP_OPEN_NO_TPM_WIPE, |
| self.gsc.CAP_IF_OPENED) |
| self.setup_tpm_rst_debouncing() |
| self.gsc.set_ccd_level(self.gsc.LOCK) |
| self.gsc.set_ccd_level(self.gsc.OPEN) |
| logging.info('successfully opened ccd') |
| finally: |
| self.fast_ccd_open(True) |
| self.gsc.send_command('ecrst off') |
| self.gsc.ccd_reset() |
| self.gsc.reboot() |
| self._try_to_bring_dut_up() |
