| # -*- coding: utf-8 -*- |
| # Copyright 2019 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """Wilco configs.""" |
| |
| from __future__ import print_function |
| from chromite.lib import cros_logging as logging |
| |
| # TODO(b/143241417): Use futility anytime flashing over ssh to avoid failures. |
| DEPLOY_SSH_FORCE_FUTILITY = True |
| |
| |
| def is_fast_required(_use_futility, servo): |
| """Returns true if --fast is necessary to flash successfully. |
| |
| The configurations in this function consistently fail on the verify step, |
| adding --fast removes verification of the flash and allows these configs to |
| flash properly. Meant to be a temporary hack until b/143240576 is fixed. |
| |
| Args: |
| _use_futility (bool): True if futility is to be used, False if |
| flashrom. |
| servo (servo_lib.Servo): The servo connected to the target DUT. |
| |
| Returns: |
| bool: True if fast is necessary, False otherwise. |
| """ |
| # servo_v4_with_servo_micro or servo_micro |
| return servo.is_micro |
| |
| |
| def get_commands(servo): |
| """Get specific flash commands for wilco |
| |
| Each board needs specific commands including the voltage for Vref, to turn |
| on and turn off the SPI flash. The get_*_commands() functions provide a |
| board-specific set of commands for these tasks. The voltage for this board |
| needs to be set to 3.3 V. |
| |
| wilco care and feeding doc only lists commands for servo v2 and servo micro |
| TODO: support 4 byte addressing? |
| From wilco care and feeding doc: |
| 4 Byte Addressing |
| |
| As of 20-Aug-2019 flashrom at ToT cannot flash the 32 MB flashes that |
| drallion uses. If you see an error about “4 byte addressing” run the |
| following commands to get a useable flashrom |
| |
| cd ~/trunk/src/third_party/flashrom/ |
| git co ff7778ab25d0b343e781cffc0e45f329ee69a5a8~1 |
| cros_workon --host start flashrom |
| sudo emerge flashrom |
| |
| Args: |
| servo (servo_lib.Servo): The servo connected to the target DUT. |
| |
| Returns: |
| list: [dut_control_on, dut_control_off, flashrom_cmd, futility_cmd] |
| dut_control*=2d arrays formmated like [["cmd1", "arg1", "arg2"], |
| ["cmd2", "arg3", "arg4"]] |
| where cmd1 will be run before cmd2 |
| flashrom_cmd=command to flash via flashrom |
| futility_cmd=command to flash via futility |
| """ |
| dut_control_on = [] |
| dut_control_off = [] |
| if servo.is_v2: |
| dut_control_on.append(['spi2_vref:pp3300', 'spi2_buf_en:on', |
| 'spi2_buf_on_flex_en:on', |
| 'cold_reset:on']) |
| dut_control_off.append(['spi2_vref:off', 'spi2_buf_en:off', |
| 'spi2_buf_on_flex_en:off', |
| 'cold_reset:off']) |
| programmer = 'ft2232_spi:type=google-servo-v2,serial=%s' % servo.serial |
| elif servo.is_micro: |
| dut_control_on.append(['spi2_vref:pp3300', 'spi2_buf_en:on', |
| 'cold_reset:on']) |
| dut_control_off.append(['spi2_vref:off', 'spi2_buf_en:off', |
| 'cold_reset:off']) |
| programmer = 'raiden_debug_spi:serial=%s' % servo.serial |
| elif servo.is_ccd: |
| # According to wilco care and feeding doc there is |
| # NO support for CCD on wilco so this will not work. |
| logging.error('wilco devices do not support ccd, cannot flash') |
| logging.info('Please use a different servo with wilco devices') |
| raise Exception('%s not accepted' % servo.version) |
| else: |
| raise Exception('%s not supported' % servo.version) |
| |
| flashrom_cmd = ['flashrom', '-p', programmer, '-w'] |
| futility_cmd = ['futility', 'update', '-p', programmer, '-i'] |
| |
| return [dut_control_on, dut_control_off, flashrom_cmd, futility_cmd] |
