c9eef2d697
Most tools used for compliance and SBOM generation use SPDX identifiers This change brings us a step closer to an easy SBOM generation. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
281 lines
9.8 KiB
Python
Executable File
281 lines
9.8 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership. The
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# ASF licenses this file to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance with the
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# License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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#
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# Usage
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# =====
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#
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# No special python modules are needed, it should be possible to run the
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# application simply as shown below;
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#
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# ------------------------------------------
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# $ ./ocdconsole.py
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# ==Link Activated
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#
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# nsh>
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# nsh> help
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# help usage: help [-v] [<cmd>]
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#
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# ? echo exit hexdump ls mh sleep xd
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# cat exec help kill mb mw usleep
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# nsh>
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# ------------------------------------------
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#
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# This code is designed to be 'hardy' and will survive a shutdown and
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# restart of the openocd process. When your target application
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# changes then the location of the upword and downword may change,
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# so they are re-searched for again. To speed up the start process
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# consider putting those words at fixed locations (e.g. via the
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# linker file) and referencing them directly.
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#
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import os
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import socket
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import time
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if os.name == "nt":
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import msvcrt
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else:
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import select
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import sys
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import termios
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import tty
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LWL_ACTIVESHIFT = 31
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LWL_DNSENSESHIFT = 30
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LWL_UPSENSESHIFT = 29
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LWL_OCTVALSHIFT = 27
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LWL_PORTSHIFT = 24
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LWL_PORTMASK = 7 << LWL_PORTSHIFT
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LWL_SENSEMASK = 3 << LWL_UPSENSESHIFT
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LWL_OCTVALMASK = 3 << LWL_OCTVALSHIFT
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LWL_ACTIVE = 1 << LWL_ACTIVESHIFT
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LWL_DNSENSEBIT = 1 << LWL_DNSENSESHIFT
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LWL_UPSENSEBIT = 1 << LWL_UPSENSESHIFT
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LWL_SIG = 0x7216A318
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LWL_PORT_CONSOLE = 1
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# Memory to scan through looking for signature
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baseaddr = 0x20000000
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length = 0x8000
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def kbhit():
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"""Returns True if a keypress is waiting to be read in stdin, False otherwise."""
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if os.name == "nt":
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return msvcrt.kbhit()
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else:
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dr, dw, de = select.select([sys.stdin], [], [], 0)
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return dr != []
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def dooutput(x):
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if x & 255 == 10:
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print("\r", flush=True)
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else:
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print(chr(x), end="", flush=True)
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###############################################################################
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# Code from here to *** below was taken from GPL'ed ocd_rpc_example.py and is
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# available in its original form at contrib/rpc_examples in the openocd tree.
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#
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# This code was approved for re-release under BSD (licence at the head of this
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# file) by the original author (Andreas Ortmann, ortmann@finf.uni-hannover.de)
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# via email to Dave Marples on 3rd June 2019.
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# email ID: 15e1f0a0-9592-bd07-c996-697f44860877@finf.uni-hannover.de
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###############################################################################
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def strToHex(data):
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return map(strToHex, data) if isinstance(data, list) else int(data, 16)
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class oocd:
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NL = "\x1A"
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def __init__(self, verbose=False):
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self.verbose = verbose
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self.tclRpcIp = "127.0.0.1"
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self.tclRpcPort = 6666
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self.bufferSize = 4096
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self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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def __enter__(self):
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self.sock.connect((self.tclRpcIp, self.tclRpcPort))
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return self
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def __exit__(self, type, value, traceback):
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try:
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self.send("exit")
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finally:
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self.sock.close()
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def send(self, cmd):
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"""Send a command string to TCL RPC. Return the result that was read."""
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data = (cmd + oocd.NL).encode("utf-8")
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if self.verbose:
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print("<- ", data)
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self.sock.send(data)
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return self._recv()
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def _recv(self):
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"""Read from the stream until the NL was received."""
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data = bytes()
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while True:
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chunk = self.sock.recv(self.bufferSize)
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data += chunk
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if bytes(oocd.NL, encoding="utf-8") in chunk:
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break
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data = data.decode("utf-8").strip()
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data = data[:-1] # strip trailing NL
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return data
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def readVariable(self, address):
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raw = self.send("%s 0x%x" % (self.mdwText, address)).split(": ")
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return None if (len(raw) < 2) else strToHex(raw[1])
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def writeVariable(self, address, value):
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assert value is not None
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self.send("mww 0x%x 0x%x" % (address, value))
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def testInterface(self):
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self.mdwText = "ocd_mdw"
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if self.readVariable(baseaddr) is not None:
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return
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self.mdwText = "mdw"
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if self.readVariable(baseaddr) is not None:
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return
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raise ConnectionRefusedError
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# *** Incorporated code ends ######################################################
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if __name__ == "__main__":
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def show(*args):
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print(*args, end="\n\n")
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fd = sys.stdin.fileno()
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old_settings = termios.tcgetattr(fd)
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while True:
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try:
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tty.setraw(fd)
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with oocd() as ocd:
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while True:
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# Find the location for the communication variables
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# =================================================
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try:
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ocd.testInterface()
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downwordaddr = 0
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while downwordaddr < length:
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if ocd.readVariable(baseaddr + downwordaddr) == LWL_SIG:
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break
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downwordaddr = downwordaddr + 4
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if downwordaddr >= length:
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print("ERROR: Cannot find signature\r")
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exit(1)
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# We have the base address, so get the variables themselves
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# =========================================================
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downwordaddr = baseaddr + downwordaddr + 4
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upwordaddr = downwordaddr + 4
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downword = LWL_ACTIVE
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# Now wake up the link...keep on trying if it goes down
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# =====================================================
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while True:
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ocd.writeVariable(downwordaddr, downword)
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upword = ocd.readVariable(upwordaddr)
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if upword & LWL_ACTIVE != 0:
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print("==Link Activated\r")
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break
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except (
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BrokenPipeError,
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ConnectionRefusedError,
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ConnectionResetError,
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) as e:
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raise e
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# Now run the comms loop until something fails
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# ============================================
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try:
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while True:
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ocd.writeVariable(downwordaddr, downword)
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upword = ocd.readVariable(upwordaddr)
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if upword & LWL_ACTIVE == 0:
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print("\r==Link Deactivated\r")
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break
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if kbhit():
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charin = sys.stdin.read(1)
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if ord(charin) == 3:
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sys.exit(0)
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if downword & LWL_DNSENSEBIT:
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downword = downword & LWL_UPSENSEBIT
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else:
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downword = (
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downword & LWL_UPSENSEBIT
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) | LWL_DNSENSEBIT
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downword |= (
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(LWL_PORT_CONSOLE << LWL_PORTSHIFT)
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| (1 << LWL_OCTVALSHIFT)
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| LWL_ACTIVE
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| ord(charin)
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)
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if (upword & LWL_UPSENSEBIT) != (downword & LWL_UPSENSEBIT):
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incomingPort = (upword & LWL_PORTMASK) >> LWL_PORTSHIFT
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if incomingPort == LWL_PORT_CONSOLE:
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incomingBytes = (
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upword & LWL_OCTVALMASK
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) >> LWL_OCTVALSHIFT
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if incomingBytes >= 1:
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dooutput(upword & 255)
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if incomingBytes >= 2:
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dooutput((upword >> 8) & 255)
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if incomingBytes == 3:
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dooutput((upword >> 16) & 255)
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if downword & LWL_UPSENSEBIT:
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downword = downword & ~LWL_UPSENSEBIT
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else:
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downword = downword | LWL_UPSENSEBIT
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except (
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ConnectionResetError,
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ConnectionResetError,
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BrokenPipeError,
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) as e:
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print("\r==Link Lost\r")
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raise e
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except (BrokenPipeError, ConnectionRefusedError, ConnectionResetError):
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time.sleep(1)
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continue
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finally:
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termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
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