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#!/usr/bin/python
#
# Copyright (c) 2016, NORDUnet A/S All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
# - Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# - Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# - Neither the name of the NORDUnet nor the names of its contributors may
# be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
# IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
# TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
"""
Utility to upload new a firmware image or FPGA bitstream
"""
import os
import sys
import time
import struct
import serial
import argparse
import getpass
from binascii import crc32
FIRMWARE_CHUNK_SIZE = 4096
FPGA_CHUNK_SIZE = 4096
default_pins = {'wheel': 'YouReallyNeedToChangeThisPINRightNowWeAreNotKidding',
'ct': 'ct',
}
default_timeout = 2
def parse_args():
"""
Parse the command line arguments
"""
parser = argparse.ArgumentParser(description = "File uploader",
add_help = True,
formatter_class = argparse.ArgumentDefaultsHelpFormatter,
)
parser.add_argument('-d', '--device',
dest='device',
default='/dev/ttyUSB0',
help='Name of management port USB serial device',
)
parser.add_argument("--username",
choices = ("so", "wheel", "ct"),
default = "so",
help = "Username to use when logging into the HSM",
)
parser.add_argument("--timeout",
metavar = 'SECONDS',
type = int,
default = default_timeout,
help = "Timeout of commands (seconds)",
)
parser.add_argument('commands', metavar='CMD', type=str, nargs='+',
help='commands to execute')
return parser.parse_args()
def _write(dst, data, debug=False):
dst.write(data)
if not debug:
return
if len(data) == 4:
print("Wrote 0x{!s}".format(data.encode('hex')))
else:
print("Wrote {!r}".format(data))
def _read(dst, retry=10, verbose=True, debug=False):
res = ''
x = dst.read(1)
while not x and retry:
x = dst.read(1)
retry -= 1
while x:
res += x
x = dst.read(1)
if debug:
print ("Read {!r}".format(res))
if verbose:
sys.stdout.write(res)
return res
def _read_until_prompt(dst, retry):
_write(dst, '\r')
while retry:
prompt = _read(dst, retry = 1)
retry -= 1
if prompt.endswith('Username: ') or \
prompt.endswith('Password: ') or \
prompt.endswith('> '):
return prompt
return ''
def _execute(dst, cmd, args):
global default_pins
prompt = _read_until_prompt(dst, retry = args.timeout)
if prompt.endswith('Username: '):
_write(dst, args.username + "\r", debug = True)
prompt = _read(dst, retry = args.timeout)
if prompt.endswith('Password: '):
pin = default_pins.get(args.username)
if not pin:
pin = getpass.getpass("{} PIN: ".format(args.username))
_write(dst, pin + '\r')
prompt = _read(dst, retry = args.timeout)
if not prompt.endswith('> '):
#sys.stderr.write('Device does not seem to be ready for a file transfer (got {!r})\n'.format(prompt))
return prompt
_write(dst, cmd)
response = _read_until_prompt(dst, retry = args.timeout)
return response
def main(args):
global pin
dst = serial.Serial(args.device, 921600, timeout=1)
for this in args.commands:
_execute(dst, this, args)
dst.close()
return True
if __name__ == '__main__':
try:
args = parse_args()
if main(args):
sys.exit(0)
sys.exit(1)
except KeyboardInterrupt:
pass
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