coil: remove tigertool

This code uses coil terms we're removing, but we don't use it in
platform/cr50. Remove the code instead of replacing the terms.

BUG=b:175244613
TEST=make buildall -j

Change-Id: I30d83e72f76c3699b37bb1750344c38266ce269f
Signed-off-by: Mary Ruthven <mruthven@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2613448
Reviewed-by: Namyoon Woo <namyoon@chromium.org>

9 files changed, 0 insertions, 1172 deletions

diff --git a/extra/tigertool/README.md b/extra/tigertool/README.md
deleted file mode 100644
index e808536e7b..0000000000
--- a/extra/tigertool/README.md
+++ /dev/null
@@ -1,18 +0,0 @@
-# tigertool
-
-tigertool.py is a commandline utility to control the tigertail USB-C mux.
-It supports changing the mux status to port A, B, or off.
-You can set a serial number to use multiple tigertails at once.
-
-## Usage
-Typical usage to set the mux port<br>
-```./tigertail.py -m [A|B|off] -s [serialno]```<br>
-
-Reboot the tigertail<br>
-```./tigertail.py --reboot```<br>
-
-Set the serial number, when only one tigertail is plugged<br>
-```./tigertail.py --setserialno=[serialno]```<br>
-
-Tigertail can support up to 20V 3A on the mux and passes through all
-USB-C lines except SBU.
diff --git a/extra/tigertool/ecusb/__init__.py b/extra/tigertool/ecusb/__init__.py
deleted file mode 100644
index c2af553d57..0000000000
--- a/extra/tigertool/ecusb/__init__.py
+++ /dev/null
@@ -1,5 +0,0 @@
-# Copyright 2017 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.
-
-__all__ = ['tiny_servo_common', 'stm32usb', 'stm32uart', 'pty_driver']
diff --git a/extra/tigertool/ecusb/pty_driver.py b/extra/tigertool/ecusb/pty_driver.py
deleted file mode 100644
index 2aec6fecad..0000000000
--- a/extra/tigertool/ecusb/pty_driver.py
+++ /dev/null
@@ -1,290 +0,0 @@
-# Copyright 2017 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.
-
-"""ptyDriver class
-
-This class takes a pty interface and can send commands and expect results
-as regex. This is useful for automating console based interfaces, such as
-the CrOS EC console commands.
-"""
-
-import ast
-import errno
-import fcntl
-import os
-import pexpect
-from pexpect import fdpexpect
-
-# Expecting a result in 3 seconds is plenty even for slow platforms.
-DEFAULT_UART_TIMEOUT = 3
-
-
-class ptyError(Exception):
-  """Exception class for pty errors."""
-
-
-UART_PARAMS = {
-    'uart_cmd': None,
-    'uart_multicmd': None,
-    'uart_regexp': None,
-    'uart_timeout': DEFAULT_UART_TIMEOUT,
-}
-
-
-class ptyDriver(object):
-  """Automate interactive commands on a pty interface."""
-  def __init__(self, interface, params, fast=False):
-    """Init class variables."""
-    self._child = None
-    self._fd = None
-    self._interface = interface
-    self._pty_path = self._interface.get_pty()
-    self._dict = UART_PARAMS.copy()
-    self._fast = fast
-
-  def __del__(self):
-    self.close()
-
-  def close(self):
-    """Close any open files and interfaces."""
-    if self._fd:
-      self._close()
-    self._interface.close()
-
-  def _open(self):
-    """Connect to serial device and create pexpect interface."""
-    assert self._fd is None
-    self._fd = os.open(self._pty_path, os.O_RDWR | os.O_NONBLOCK)
-    # Don't allow forked processes to access.
-    fcntl.fcntl(self._fd, fcntl.F_SETFD,
-                fcntl.fcntl(self._fd, fcntl.F_GETFD) | fcntl.FD_CLOEXEC)
-    self._child = fdpexpect.fdspawn(self._fd)
-    # pexpect defaults to a 100ms delay before sending characters, to
-    # work around race conditions in ssh. We don't need this feature
-    # so we'll change delaybeforesend from 0.1 to 0.001 to speed things up.
-    if self._fast:
-      self._child.delaybeforesend = 0.001
-
-  def _close(self):
-    """Close serial device connection."""
-    os.close(self._fd)
-    self._fd = None
-    self._child = None
-
-  def _flush(self):
-    """Flush device output to prevent previous messages interfering."""
-    if self._child.sendline('') != 1:
-      raise ptyError('Failed to send newline.')
-    while True:
-      try:
-        self._child.expect('.', timeout=0.2)
-      except (pexpect.TIMEOUT, pexpect.EOF):
-        break
-      except OSError as e:
-        # EAGAIN indicates no data available, maybe we didn't wait long enough.
-        if e.errno != errno.EAGAIN:
-          raise
-        break
-
-  def _send(self, cmds):
-    """Send command to EC.
-
-    This function always flushes serial device before sending, and is used as
-    a wrapper function to make sure the channel is always flushed before
-    sending commands.
-
-    Args:
-      cmds: The commands to send to the device, either a list or a string.
-
-    Raises:
-      ptyError: Raised when writing to the device fails.
-    """
-    self._flush()
-    if not isinstance(cmds, list):
-      cmds = [cmds]
-    for cmd in cmds:
-      if self._child.sendline(cmd) != len(cmd) + 1:
-        raise ptyError('Failed to send command.')
-
-  def _issue_cmd(self, cmds):
-    """Send command to the device and do not wait for response.
-
-    Args:
-      cmds: The commands to send to the device, either a list or a string.
-    """
-    self._issue_cmd_get_results(cmds, [])
-
-  def _issue_cmd_get_results(self, cmds,
-                             regex_list, timeout=DEFAULT_UART_TIMEOUT):
-    """Send command to the device and wait for response.
-
-    This function waits for response message matching a regular
-    expressions.
-
-    Args:
-      cmds: The commands issued, either a list or a string.
-      regex_list: List of Regular expressions used to match response message.
-        Note1, list must be ordered.
-        Note2, empty list sends and returns.
-      timeout: time to wait for matching results before failing.
-
-    Returns:
-      List of tuples, each of which contains the entire matched string and
-      all the subgroups of the match. None if not matched.
-      For example:
-        response of the given command:
-          High temp: 37.2
-          Low temp: 36.4
-        regex_list:
-          ['High temp: (\d+)\.(\d+)', 'Low temp: (\d+)\.(\d+)']
-        returns:
-          [('High temp: 37.2', '37', '2'), ('Low temp: 36.4', '36', '4')]
-
-    Raises:
-      ptyError: If timed out waiting for a response
-    """
-    result_list = []
-    self._open()
-    try:
-      self._send(cmds)
-      for regex in regex_list:
-        self._child.expect(regex, timeout)
-        match = self._child.match
-        lastindex = match.lastindex if match and match.lastindex else 0
-        # Create a tuple which contains the entire matched string and all
-        # the subgroups of the match.
-        result = match.group(*range(lastindex + 1)) if match else None
-        result_list.append(result)
-    except pexpect.TIMEOUT:
-      raise ptyError('Timeout waiting for response.')
-    finally:
-      self._close()
-    return result_list
-
-  def _issue_cmd_get_multi_results(self, cmd, regex):
-    """Send command to the device and wait for multiple response.
-
-    This function waits for arbitrary number of response message
-    matching a regular expression.
-
-    Args:
-      cmd: The command issued.
-      regex: Regular expression used to match response message.
-
-    Returns:
-      List of tuples, each of which contains the entire matched string and
-      all the subgroups of the match. None if not matched.
-    """
-    result_list = []
-    self._open()
-    try:
-      self._send(cmd)
-      while True:
-        try:
-          self._child.expect(regex, timeout=0.1)
-          match = self._child.match
-          lastindex = match.lastindex if match and match.lastindex else 0
-          # Create a tuple which contains the entire matched string and all
-          # the subgroups of the match.
-          result = match.group(*range(lastindex + 1)) if match else None
-          result_list.append(result)
-        except pexpect.TIMEOUT:
-          break
-    finally:
-      self._close()
-    return result_list
-
-  def _Set_uart_timeout(self, timeout):
-    """Set timeout value for waiting for the device response.
-
-    Args:
-      timeout: Timeout value in second.
-    """
-    self._dict['uart_timeout'] = timeout
-
-  def _Get_uart_timeout(self):
-    """Get timeout value for waiting for the device response.
-
-    Returns:
-      Timeout value in second.
-    """
-    return self._dict['uart_timeout']
-
-  def _Set_uart_regexp(self, regexp):
-    """Set the list of regular expressions which matches the command response.
-
-    Args:
-      regexp: A string which contains a list of regular expressions.
-    """
-    if not isinstance(regexp, str):
-      raise ptyError('The argument regexp should be a string.')
-    self._dict['uart_regexp'] = ast.literal_eval(regexp)
-
-  def _Get_uart_regexp(self):
-    """Get the list of regular expressions which matches the command response.
-
-    Returns:
-      A string which contains a list of regular expressions.
-    """
-    return str(self._dict['uart_regexp'])
-
-  def _Set_uart_cmd(self, cmd):
-    """Set the UART command and send it to the device.
-
-    If ec_uart_regexp is 'None', the command is just sent and it doesn't care
-    about its response.
-
-    If ec_uart_regexp is not 'None', the command is send and its response,
-    which matches the regular expression of ec_uart_regexp, will be kept.
-    Use its getter to obtain this result. If no match after ec_uart_timeout
-    seconds, a timeout error will be raised.
-
-    Args:
-      cmd: A string of UART command.
-    """
-    if self._dict['uart_regexp']:
-      self._dict['uart_cmd'] = self._issue_cmd_get_results(
-          cmd, self._dict['uart_regexp'], self._dict['uart_timeout'])
-    else:
-      self._dict['uart_cmd'] = None
-      self._issue_cmd(cmd)
-
-  def _Set_uart_multicmd(self, cmds):
-    """Set multiple UART commands and send them to the device.
-
-    Note that ec_uart_regexp is not supported to match the results.
-
-    Args:
-      cmds: A semicolon-separated string of UART commands.
-    """
-    self._issue_cmd(cmds.split(';'))
-
-  def _Get_uart_cmd(self):
-    """Get the result of the latest UART command.
-
-    Returns:
-      A string which contains a list of tuples, each of which contains the
-      entire matched string and all the subgroups of the match. 'None' if
-      the ec_uart_regexp is 'None'.
-    """
-    return str(self._dict['uart_cmd'])
-
-  def _Set_uart_capture(self, cmd):
-    """Set UART capture mode (on or off).
-
-    Once capture is enabled, UART output could be collected periodically by
-    invoking _Get_uart_stream() below.
-
-    Args:
-      cmd: True for on, False for off
-    """
-    self._interface.set_capture_active(cmd)
-
-  def _Get_uart_capture(self):
-    """Get the UART capture mode (on or off)."""
-    return self._interface.get_capture_active()
-
-  def _Get_uart_stream(self):
-    """Get uart stream generated since last time."""
-    return self._interface.get_stream()
diff --git a/extra/tigertool/ecusb/stm32uart.py b/extra/tigertool/ecusb/stm32uart.py
deleted file mode 100644
index 21fcbd2cc2..0000000000
--- a/extra/tigertool/ecusb/stm32uart.py
+++ /dev/null
@@ -1,241 +0,0 @@
-# Copyright 2017 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.
-
-"""Allow creation of uart/console interface via stm32 usb endpoint."""
-
-from __future__ import print_function
-
-import os
-import select
-import sys
-import termios
-import threading
-import time
-import tty
-import usb
-
-import stm32usb
-
-
-class SuartError(Exception):
-  """Class for exceptions of Suart."""
-  def __init__(self, msg, value=0):
-    """SuartError constructor.
-
-    Args:
-      msg: string, message describing error in detail
-      value: integer, value of error when non-zero status returned.  Default=0
-    """
-    super(SuartError, self).__init__(msg, value)
-    self.msg = msg
-    self.value = value
-
-
-class Suart(object):
-  """Provide interface to stm32 serial usb endpoint."""
-  def __init__(self, vendor=0x18d1, product=0x501a, interface=0,
-               serialname=None, debuglog=False):
-    """Suart contstructor.
-
-    Initializes stm32 USB stream interface.
-
-    Args:
-      vendor: usb vendor id of stm32 device
-      product: usb product id of stm32 device
-      interface: interface number of stm32 device to use
-      serialname: serial name to target. Defaults to None.
-      debuglog: chatty output. Defaults to False.
-
-    Raises:
-      SuartError: If init fails
-    """
-    self._ptym = None
-    self._ptys = None
-    self._ptyname = None
-    self._rx_thread = None
-    self._tx_thread = None
-    self._debuglog = debuglog
-    self._susb = stm32usb.Susb(vendor=vendor, product=product,
-                               interface=interface, serialname=serialname)
-    self._running = False
-
-  def __del__(self):
-    """Suart destructor."""
-    self.close()
-
-  def close(self):
-    """Stop all running threads."""
-    self._running = False
-    if self._rx_thread:
-      self._rx_thread.join(2)
-      self._rx_thread = None
-    if self._tx_thread:
-      self._tx_thread.join(2)
-      self._tx_thread = None
-    self._susb.close()
-
-  def run_rx_thread(self):
-    """Background loop to pass data from USB to pty."""
-    ep = select.epoll()
-    ep.register(self._ptym, select.EPOLLHUP)
-    try:
-      while self._running:
-        events = ep.poll(0)
-        # Check if the pty is connected to anything, or hungup.
-        if not events:
-          try:
-            r = self._susb._read_ep.read(64, self._susb.TIMEOUT_MS)
-            if r:
-              if self._debuglog:
-                print(''.join([chr(x) for x in r]), end='')
-              os.write(self._ptym, r)
-
-          # If we miss some characters on pty disconnect, that's fine.
-          # ep.read() also throws USBError on timeout, which we discard.
-          except OSError:
-            pass
-          except usb.core.USBError:
-            pass
-        else:
-          time.sleep(.1)
-    except Exception as e:
-      raise e
-
-  def run_tx_thread(self):
-    """Background loop to pass data from pty to USB."""
-    ep = select.epoll()
-    ep.register(self._ptym, select.EPOLLHUP)
-    try:
-      while self._running:
-        events = ep.poll(0)
-        # Check if the pty is connected to anything, or hungup.
-        if not events:
-          try:
-            r = os.read(self._ptym, 64)
-            if r:
-              self._susb._write_ep.write(r, self._susb.TIMEOUT_MS)
-
-          except OSError:
-            pass
-          except usb.core.USBError:
-            pass
-        else:
-          time.sleep(.1)
-    except Exception as e:
-      raise e
-
-  def run(self):
-    """Creates pthreads to poll stm32 & PTY for data."""
-    m, s = os.openpty()
-    self._ptyname = os.ttyname(s)
-
-    self._ptym = m
-    self._ptys = s
-
-    os.fchmod(s, 0o660)
-
-    # Change the owner and group of the PTY to the user who started servod.
-    try:
-      uid = int(os.environ.get('SUDO_UID', -1))
-    except TypeError:
-      uid = -1
-
-    try:
-      gid = int(os.environ.get('SUDO_GID', -1))
-    except TypeError:
-      gid = -1
-    os.fchown(s, uid, gid)
-
-    tty.setraw(self._ptym, termios.TCSADRAIN)
-
-    # Generate a HUP flag on pty slave fd.
-    os.fdopen(s).close()
-
-    self._running = True
-
-    self._rx_thread = threading.Thread(target=self.run_rx_thread, args=[])
-    self._rx_thread.daemon = True
-    self._rx_thread.start()
-
-    self._tx_thread = threading.Thread(target=self.run_tx_thread, args=[])
-    self._tx_thread.daemon = True
-    self._tx_thread.start()
-
-  def get_uart_props(self):
-    """Get the uart's properties.
-
-    Returns:
-      dict where:
-        baudrate: integer of uarts baudrate
-        bits: integer, number of bits of data Can be 5|6|7|8 inclusive
-        parity: integer, parity of 0-2 inclusive where:
-          0: no parity
-          1: odd parity
-          2: even parity
-        sbits: integer, number of stop bits.  Can be 0|1|2 inclusive where:
-          0: 1 stop bit
-          1: 1.5 stop bits
-          2: 2 stop bits
-    """
-    return {
-        'baudrate': 115200,
-        'bits': 8,
-        'parity': 0,
-        'sbits': 1,
-    }
-
-  def set_uart_props(self, line_props):
-    """Set the uart's properties.
-
-    Note that Suart cannot set properties
-    and will fail if the properties are not the default 115200,8n1.
-
-    Args:
-      line_props: dict where:
-        baudrate: integer of uarts baudrate
-        bits: integer, number of bits of data ( prior to stop bit)
-        parity: integer, parity of 0-2 inclusive where
-          0: no parity
-          1: odd parity
-          2: even parity
-        sbits: integer, number of stop bits.  Can be 0|1|2 inclusive where:
-          0: 1 stop bit
-          1: 1.5 stop bits
-          2: 2 stop bits
-
-    Raises:
-      SuartError: If requested line properties are not the default.
-    """
-    curr_props = self.get_uart_props()
-    for prop in line_props:
-      if line_props[prop] != curr_props[prop]:
-        raise SuartError('Line property %s cannot be set from %s to %s' % (
-            prop, curr_props[prop], line_props[prop]))
-    return True
-
-  def get_pty(self):
-    """Gets path to pty for communication to/from uart.
-
-    Returns:
-      String path to the pty connected to the uart
-    """
-    return self._ptyname
-
-
-def main():
-  """Run a suart test with the default parameters."""
-  try:
-    sobj = Suart()
-    sobj.run()
-
-    # run() is a thread so just busy wait to mimic server.
-    while True:
-      # Ours sleeps to eleven!
-      time.sleep(11)
-  except KeyboardInterrupt:
-    sys.exit(0)
-
-
-if __name__ == '__main__':
-  main()
diff --git a/extra/tigertool/ecusb/stm32usb.py b/extra/tigertool/ecusb/stm32usb.py
deleted file mode 100644
index 875251329f..0000000000
--- a/extra/tigertool/ecusb/stm32usb.py
+++ /dev/null
@@ -1,115 +0,0 @@
-# Copyright 2017 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.
-
-"""Allows creation of an interface via stm32 usb."""
-
-import usb
-
-
-class SusbError(Exception):
-  """Class for exceptions of Susb."""
-  def __init__(self, msg, value=0):
-    """SusbError constructor.
-
-    Args:
-      msg: string, message describing error in detail
-      value: integer, value of error when non-zero status returned.  Default=0
-    """
-    super(SusbError, self).__init__(msg, value)
-    self.msg = msg
-    self.value = value
-
-
-class Susb(object):
-  """Provide stm32 USB functionality.
-
-  Instance Variables:
-    _read_ep: pyUSB read endpoint for this interface
-    _write_ep: pyUSB write endpoint for this interface
-  """
-  READ_ENDPOINT = 0x81
-  WRITE_ENDPOINT = 0x1
-  TIMEOUT_MS = 100
-
-  def __init__(self, vendor=0x18d1,
-               product=0x5027, interface=1, serialname=None, logger=None):
-    """Susb constructor.
-
-    Discovers and connects to stm32 USB endpoints.
-
-    Args:
-      vendor: usb vendor id of stm32 device.
-      product: usb product id of stm32 device.
-      interface: interface number ( 1 - 4 ) of stm32 device to use.
-      serialname: string of device serialname.
-      logger: none
-
-    Raises:
-      SusbError: An error accessing Susb object
-    """
-    self._vendor = vendor
-    self._product = product
-    self._interface = interface
-    self._serialname = serialname
-    self._find_device()
-
-  def _find_device(self):
-    """Set up the usb endpoint"""
-    # Find the stm32.
-    dev_g = usb.core.find(idVendor=self._vendor, idProduct=self._product,
-                             find_all=True)
-    dev_list = list(dev_g)
-
-    if not dev_list:
-      raise SusbError('USB device not found')
-
-    # Check if we have multiple stm32s and we've specified the serial.
-    dev = None
-    if self._serialname:
-      for d in dev_list:
-        dev_serial = usb.util.get_string(d, d.iSerialNumber)
-        if dev_serial == self._serialname:
-          dev = d
-          break
-      if dev is None:
-        raise SusbError('USB device(%s) not found' % self._serialname)
-    else:
-      try:
-        dev = dev_list[0]
-      except StopIteration:
-        raise SusbError('USB device %04x:%04x not found' % (
-            self._vendor, self._product))
-
-    # If we can't set configuration, it's already been set.
-    try:
-      dev.set_configuration()
-    except usb.core.USBError:
-      pass
-
-    self._dev = dev
-
-    # Get an endpoint instance.
-    cfg = dev.get_active_configuration()
-    intf = usb.util.find_descriptor(cfg, bInterfaceNumber=self._interface)
-    self._intf = intf
-    if not intf:
-      raise SusbError('Interface %04x:%04x - 0x%x not found' % (
-          self._vendor, self._product, self._interface))
-
-    # Detach raiden.ko if it is loaded. CCD endpoints support either a kernel
-    # module driver that produces a ttyUSB, or direct endpoint access, but
-    # can't do both at the same time.
-    if dev.is_kernel_driver_active(intf.bInterfaceNumber) is True:
-      dev.detach_kernel_driver(intf.bInterfaceNumber)
-
-    read_ep_number = intf.bInterfaceNumber + self.READ_ENDPOINT
-    read_ep = usb.util.find_descriptor(intf, bEndpointAddress=read_ep_number)
-    self._read_ep = read_ep
-
-    write_ep_number = intf.bInterfaceNumber + self.WRITE_ENDPOINT
-    write_ep = usb.util.find_descriptor(intf, bEndpointAddress=write_ep_number)
-    self._write_ep = write_ep
-
-  def close(self):
-    usb.util.dispose_resources(self._dev)
diff --git a/extra/tigertool/ecusb/tiny_servo_common.py b/extra/tigertool/ecusb/tiny_servo_common.py
deleted file mode 100644
index c2a3992198..0000000000
--- a/extra/tigertool/ecusb/tiny_servo_common.py
+++ /dev/null
@@ -1,158 +0,0 @@
-# Copyright 2017 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.
-
-"""Utilities for using lightweight console functions."""
-
-import datetime
-import errno
-import os
-import re
-import subprocess
-import sys
-import time
-
-import pty_driver
-import stm32uart
-
-
-class TinyServoError(Exception):
-  """Exceptions."""
-
-
-def log(output):
-  """Print output to console, logfiles can be added here.
-
-  Args:
-    output: string to output.
-  """
-  sys.stdout.write(output)
-  sys.stdout.write('\n')
-  sys.stdout.flush()
-
-def check_usb(vidpid, serialname=None):
-  """Check if |vidpid| is present on the system's USB.
-
-  Args:
-    vidpid: string representation of the usb vid:pid, eg. '18d1:2001'
-    serialname: serialname if specified.
-
-  Returns: True if found, False, otherwise.
-  """
-  if serialname:
-    output = subprocess.check_output(['lsusb', '-v', '-d', vidpid])
-    m = re.search(r'^\s*iSerial\s+\d+\s+%s$' % serialname, output, flags=re.M)
-    if m:
-      return True
-
-    return False
-  else:
-    if subprocess.call(['lsusb', '-d', vidpid], stdout=open('/dev/null', 'w')):
-      return False
-  return True
-
-def check_usb_sn(vidpid):
-  """Return the serial number
-
-  Return the serial number of the first USB device with VID:PID vidpid,
-  or None if no device is found. This will not work well with two of
-  the same device attached.
-
-  Args:
-    vidpid: string representation of the usb vid:pid, eg. '18d1:2001'
-
-  Returns: string serial number if found, None otherwise.
-  """
-  output = subprocess.check_output(['lsusb', '-v', '-d', vidpid])
-  m = re.search(r'^\s*iSerial\s+(.*)$', output, flags=re.M)
-  if m:
-    return m.group(1)
-
-  return None
-
-def wait_for_usb_remove(vidpid, serialname=None, timeout=None):
-  """Wait for USB device with vidpid to be removed.
-
-  Wrapper for wait_for_usb below
-  """
-  wait_for_usb(vidpid, serialname=serialname,
-               timeout=timeout, desiredpresence=False)
-
-def wait_for_usb(vidpid, serialname=None, timeout=None, desiredpresence=True):
-  """Wait for usb device with vidpid to be present/absent.
-
-  Args:
-    vidpid: string representation of the usb vid:pid, eg. '18d1:2001'
-    serialname: serialname if specificed.
-    timeout: timeout in seconds, None for no timeout.
-    desiredpresence: True for present, False for not present.
-
-  Raises:
-    TinyServoError: on timeout.
-  """
-  if timeout:
-    finish = datetime.datetime.now() + datetime.timedelta(seconds=timeout)
-  while check_usb(vidpid, serialname) != desiredpresence:
-    time.sleep(.1)
-    if timeout:
-      if datetime.datetime.now() > finish:
-        raise TinyServoError('Timeout', 'Timeout waiting for USB %s' % vidpid)
-
-def do_serialno(serialno, pty):
-  """Set serialnumber 'serialno' via ec console 'pty'.
-
-  Commands are:
-  # > serialno set 1234
-  # Saving serial number
-  # Serial number: 1234
-
-  Args:
-    serialno: string serial number to set.
-    pty: tinyservo console to send commands.
-
-  Raises:
-    TinyServoError: on failure to set.
-    ptyError: on command interface error.
-  """
-  cmd = 'serialno set %s' % serialno
-  regex = 'Serial number: (.*)$'
-
-  results = pty._issue_cmd_get_results(cmd, [regex])[0]
-  sn = results[1].strip().strip('\n\r')
-
-  if sn == serialno:
-    log('Success !')
-    log('Serial set to %s' % sn)
-  else:
-    log('Serial number set to %s but saved as %s.' % (serialno, sn))
-    raise TinyServoError(
-        'Serial Number',
-        'Serial number set to %s but saved as %s.' % (serialno, sn))
-
-def setup_tinyservod(vidpid, interface, serialname=None, debuglog=False):
-  """Set up a pty
-
-  Set up a pty to the ec console in order
-  to send commands. Returns a pty_driver object.
-
-  Args:
-    vidpid: string vidpid of device to access.
-    interface: not used.
-    serialname: string serial name of device requested, optional.
-    debuglog: chatty printout (boolean)
-
-  Returns: pty object
-
-  Raises:
-    UsbError, SusbError: on device not found
-  """
-  vidstr, pidstr = vidpid.split(':')
-  vid = int(vidstr, 16)
-  pid = int(pidstr, 16)
-  suart = stm32uart.Suart(vendor=vid, product=pid,
-                          interface=interface, serialname=serialname,
-                          debuglog=debuglog)
-  suart.run()
-  pty = pty_driver.ptyDriver(suart, [])
-
-  return pty
diff --git a/extra/tigertool/flash_dfu.sh b/extra/tigertool/flash_dfu.sh
deleted file mode 100755
index 7aa6c24f09..0000000000
--- a/extra/tigertool/flash_dfu.sh
+++ /dev/null
@@ -1,57 +0,0 @@
-#!/bin/bash
-# Copyright 2017 The Chromium OS Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-FLAGS_timeout=600
-IMG=${1:-tigertail.bin}
-
-echo "Flashing ${IMG}"
-
-error() {
-	printf "%s\n" "$*" >&2
-}
-
-die() {
-	[[ "$#*" == "0" ]] || error "$@"
-	exit 1
-}
-
-flash_stm32_dfu() {
-	local DFU_DEVICE=0483:df11
-	local ADDR=0x08000000
-
-	[[ -e "${IMG}" ]] || die "File ${IMG} not found!"
-
-	# Check for a suitable local dfu-util
-	local LOCAL_DFU_UTIL=$(which dfu-util)
-	if [[ -n "${LOCAL_DFU_UTIL}" ]]; then
-		DFU_VERSION=$("${LOCAL_DFU_UTIL}" -V | head -n1 | cut -d' ' -f2)
-		if [[ "${DFU_VERSION}" < "0.7" ]]; then
-			LOCAL_DFU_UTIL=""
-		fi
-	fi
-	local DFU_UTIL=${LOCAL_DFU_UTIL:-'./dfu-util'}
-
-	which "${DFU_UTIL}" &> /dev/null || die \
-		"no dfu-util util found.  Did you 'sudo emerge dfu-util'."
-
-	local dev_cnt=$(lsusb -d "${DFU_DEVICE}" | wc -l)
-	if [ $dev_cnt -eq 0 ] ; then
-		die "unable to locate dfu device at ${DFU_DEVICE}."
-	elif [ $dev_cnt -ne 1 ] ; then
-		die "too many dfu devices (${dev_cnt}). Disconnect all but one."
-	fi
-
-	local SIZE=$(wc -c "${IMG}" | cut -d' ' -f1)
-	# Remove read protection.
-	sudo timeout -k 10 -s 9 "${FLAGS_timeout}" \
-		${DFU_UTIL} -a 0 -s ${ADDR}:${SIZE}:force:unprotect -D "${IMG}"
-	# Wait for mass-erase and reboot after unprotection.
-	sleep 1
-	# Actual image flashing.
-	sudo timeout -k 10 -s 9 "${FLAGS_timeout}" \
-		$DFU_UTIL -a 0 -s ${ADDR}:${SIZE} -D "${IMG}"
-}
-
-flash_stm32_dfu
diff --git a/extra/tigertool/make_pkg.sh b/extra/tigertool/make_pkg.sh
deleted file mode 100755
index d2860f64c1..0000000000
--- a/extra/tigertool/make_pkg.sh
+++ /dev/null
@@ -1,28 +0,0 @@
-#!/bin/bash
-# Copyright 2017 The Chromium OS Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-# Make sure we are in the correct dir.
-cd "$( dirname "${BASH_SOURCE[0]}" )" || exit
-
-# Clean and previous cruft.
-rm -rf build
-
-DEST=build/tigertool
-DATE=$(date +"%Y%m%d")
-
-mkdir -p "${DEST}"
-cp ../usb_serial/console.py "${DEST}"
-cp ../../../../../chroot/usr/bin/dfu-util "${DEST}"
-cp flash_dfu.sh "${DEST}"
-cp tigertool.py "${DEST}"
-
-cp -r ecusb "${DEST}"
-cp -r ../../../../../chroot/usr/lib64/python2.7/site-packages/usb "${DEST}"
-find "${DEST}" -name "*.py[co]" -delete
-cp -r ../usb_serial "${DEST}"
-
-(cd build; tar -czf tigertool_${DATE}.tgz tigertool)
-
-echo "Done packaging tigertool_${DATE}.tgz"
diff --git a/extra/tigertool/tigertool.py b/extra/tigertool/tigertool.py
deleted file mode 100755
index a3c25e3ad6..0000000000
--- a/extra/tigertool/tigertool.py
+++ /dev/null
@@ -1,260 +0,0 @@
-#!/usr/bin/env python2
-# Copyright 2017 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.
-
-"""Script to control tigertail USB-C Mux board."""
-
-import argparse
-import sys
-import time
-
-import ecusb.tiny_servo_common as c
-
-STM_VIDPID = '18d1:5027'
-serialno = 'Uninitialized'
-
-def do_mux(mux, pty):
-  """Set mux via ec console 'pty'.
-
-  Args:
-    mux: mux to connect to DUT, 'A', 'B', or 'off'
-    pty: a pty object connected to tigertail
-
-  Commands are:
-  # > mux A
-  # TYPE-C mux is A
-  """
-  validmux = ['A', 'B', 'off']
-  if mux not in validmux:
-    c.log('Mux setting %s invalid, try one of %s' % (mux, validmux))
-    return False
-
-  cmd = '\r\nmux %s\r\n' % mux
-  regex = 'TYPE\-C mux is ([^\s\r\n]*)\r'
-
-  results = pty._issue_cmd_get_results(cmd, [regex])[0]
-  result = results[1].strip().strip('\n\r')
-
-  if result != mux:
-    c.log('Mux set to %s but saved as %s.' % (mux, result))
-    return False
-  c.log('Mux set to %s' % result)
-  return True
-
-def do_version(pty):
-  """Check version via ec console 'pty'.
-
-  Args:
-    pty: a pty object connected to tigertail
-
-  Commands are:
-  # > version
-  # Chip:    stm stm32f07x
-  # Board:   0
-  # RO:      tigertail_v1.1.6749-74d1a312e
-  # RW:      tigertail_v1.1.6749-74d1a312e
-  # Build:   tigertail_v1.1.6749-74d1a312e
-  #          2017-07-25 20:08:34 nsanders@meatball.mtv.corp.google.com
-
-  """
-  cmd = '\r\nversion\r\n'
-  regex = 'RO:\s+(\S+)\s+RW:\s+(\S+)\s+Build:\s+(\S+)\s+' \
-          '(\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d) (\S+)'
-
-  results = pty._issue_cmd_get_results(cmd, [regex])[0]
-  c.log('Version is %s' % results[3])
-  c.log('RO:    %s' % results[1])
-  c.log('RW:    %s' % results[2])
-  c.log('Date:  %s' % results[4])
-  c.log('Src:   %s' % results[5])
-
-  return True
-
-def do_check_serial(pty):
-  """Check serial via ec console 'pty'.
-
-  Args:
-    pty: a pty object connected to tigertail
-
-  Commands are:
-  # > serialno
-  # Serial number: number
-  """
-  cmd = '\r\nserialno\r\n'
-  regex = 'Serial number: ([^\n\r]+)'
-
-  results = pty._issue_cmd_get_results(cmd, [regex])[0]
-  c.log('Serial is %s' % results[1])
-
-  return True
-
-
-def do_power(count, bus, pty):
-  """Check power usage via ec console 'pty'.
-
-  Args:
-    count: number of samples to capture
-    bus: rail to monitor, 'vbus', 'cc1', or 'cc2'
-    pty: a pty object connected to tigertail
-
-  Commands are:
-  # > ina 0
-  # Configuration: 4127
-  # Shunt voltage: 02c4 => 1770 uV
-  # Bus voltage  : 1008 => 5130 mV
-  # Power        : 0019 => 625 mW
-  # Current      : 0082 => 130 mA
-  # Calibration  : 0155
-  # Mask/Enable  : 0008
-  # Alert limit  : 0000
-  """
-  if bus == 'vbus':
-    ina = 0
-  if bus == 'cc1':
-    ina = 4
-  if bus == 'cc2':
-    ina = 1
-
-  start = time.time()
-
-  c.log('time,\tmV,\tmW,\tmA')
-
-  cmd = '\r\nina %s\r\n' % ina
-  regex = 'Bus voltage  : \S+ \S+ (\d+) mV\s+' \
-          'Power        : \S+ \S+ (\d+) mW\s+' \
-          'Current      : \S+ \S+ (\d+) mA'
-
-  for i in xrange(0, count):
-    results = pty._issue_cmd_get_results(cmd, [regex])[0]
-    c.log('%.2f,\t%s,\t%s\t%s' % (time.time() - start,
-          results[1], results[2], results[3]))
-
-  return True
-
-def do_reboot(pty):
-  """Reboot via ec console pty
-
-  Args:
-    pty: a pty object connected to tigertail
-
-  Command is: reboot.
-  """
-  cmd = '\r\nreboot\r\n'
-  regex = 'Rebooting'
-
-  try:
-    results = pty._issue_cmd_get_results(cmd, [regex])[0]
-    time.sleep(1)
-    c.log(results)
-  except Exception as e:
-    c.log(e)
-    return False
-
-  return True
-
-def do_sysjump(region, pty):
-  """Set region via ec console 'pty'.
-
-  Args:
-    region: ec code region to execute, 'ro' or 'rw'
-    pty: a pty object connected to tigertail
-
-  Commands are:
-  # > sysjump rw
-  """
-  validregion = ['ro', 'rw']
-  if region not in validregion:
-    c.log('Region setting %s invalid, try one of %s' % (
-        region, validregion))
-    return False
-
-  cmd = '\r\nsysjump %s\r\n' % region
-  try:
-    pty._issue_cmd(cmd)
-    time.sleep(1)
-  except Exception as e:
-    c.log(e)
-    return False
-
-  c.log('Region requested %s' % region)
-  return True
-
-def get_parser():
-  parser = argparse.ArgumentParser(
-      description=__doc__)
-  parser.add_argument('-s', '--serialno', type=str, default=None,
-                      help='serial number of board to use')
-  parser.add_argument('-b', '--bus', type=str, default='vbus',
-                     help='Which rail to log: [vbus|cc1|cc2]')
-  group = parser.add_mutually_exclusive_group()
-  group.add_argument('--setserialno', type=str, default=None,
-                     help='serial number to set on the board.')
-  group.add_argument('--check_serial', action='store_true',
-                     help='check serial number set on the board.')
-  group.add_argument('-m', '--mux', type=str, default=None,
-                     help='mux selection')
-  group.add_argument('-p', '--power', action='store_true',
-                     help='check VBUS')
-  group.add_argument('-l', '--powerlog', type=int, default=None,
-                     help='log VBUS')
-  group.add_argument('-r', '--sysjump', type=str, default=None,
-                     help='region selection')
-  group.add_argument('--reboot', action='store_true',
-                     help='reboot tigertail')
-  group.add_argument('--check_version', action='store_true',
-                     help='check tigertail version')
-  return parser
-
-def main(argv):
-  parser = get_parser()
-  opts = parser.parse_args(argv)
-
-  result = True
-
-  # Let's make sure there's a tigertail
-  # If nothing found in 5 seconds, fail.
-  c.wait_for_usb(STM_VIDPID, timeout=5., serialname=opts.serialno)
-
-  pty = c.setup_tinyservod(STM_VIDPID, 0, serialname=opts.serialno)
-
-  if opts.bus not in ('vbus', 'cc1', 'cc2'):
-    c.log('Try --bus [vbus|cc1|cc2]')
-    result = False
-
-  elif opts.setserialno:
-    try:
-      c.do_serialno(opts.setserialno, pty)
-    except Exception:
-      result = False
-
-  elif opts.mux:
-    result &= do_mux(opts.mux, pty)
-
-  elif opts.sysjump:
-    result &= do_sysjump(opts.sysjump, pty)
-
-  elif opts.reboot:
-    result &= do_reboot(pty)
-
-  elif opts.check_version:
-    result &= do_version(pty)
-
-  elif opts.check_serial:
-    result &= do_check_serial(pty)
-
-  elif opts.power:
-    result &= do_power(1, opts.bus, pty)
-
-  elif opts.powerlog:
-    result &= do_power(opts.powerlog, opts.bus, pty)
-
-  if result:
-    c.log('PASS')
-  else:
-    c.log('FAIL')
-    exit(-1)
-
-
-if __name__ == '__main__':
-  sys.exit(main(sys.argv[1:]))