348 lines
13 KiB
Python
Executable file
348 lines
13 KiB
Python
Executable file
#!/usr/bin/env python
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#
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# parttool is used to perform partition level operations - reading,
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# writing, erasing and getting info about the partition.
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#
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# Copyright 2018 Espressif Systems (Shanghai) PTE LTD
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from __future__ import print_function, division
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import argparse
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import os
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import sys
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import subprocess
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import tempfile
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import re
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import gen_esp32part as gen
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__version__ = '2.0'
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COMPONENTS_PATH = os.path.expandvars(os.path.join("$IDF_PATH", "components"))
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ESPTOOL_PY = os.path.join(COMPONENTS_PATH, "esptool_py", "esptool", "esptool.py")
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PARTITION_TABLE_OFFSET = 0x8000
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quiet = False
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def status(msg):
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if not quiet:
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print(msg)
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class _PartitionId():
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def __init__(self, name=None, type=None, subtype=None):
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self.name = name
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self.type = type
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self.subtype = subtype
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class PartitionName(_PartitionId):
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def __init__(self, name):
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_PartitionId.__init__(self, name=name)
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class PartitionType(_PartitionId):
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def __init__(self, type, subtype):
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_PartitionId.__init__(self, type=type, subtype=subtype)
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PARTITION_BOOT_DEFAULT = _PartitionId()
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class ParttoolTarget():
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def __init__(self, port=None, baud=None, partition_table_offset=PARTITION_TABLE_OFFSET, partition_table_file=None,
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esptool_args=[], esptool_write_args=[], esptool_read_args=[], esptool_erase_args=[]):
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self.port = port
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self.baud = baud
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gen.offset_part_table = partition_table_offset
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def parse_esptool_args(esptool_args):
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results = list()
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for arg in esptool_args:
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pattern = re.compile(r"(.+)=(.+)")
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result = pattern.match(arg)
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try:
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key = result.group(1)
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value = result.group(2)
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results.extend(["--" + key, value])
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except AttributeError:
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results.extend(["--" + arg])
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return results
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self.esptool_args = parse_esptool_args(esptool_args)
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self.esptool_write_args = parse_esptool_args(esptool_write_args)
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self.esptool_read_args = parse_esptool_args(esptool_read_args)
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self.esptool_erase_args = parse_esptool_args(esptool_erase_args)
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if partition_table_file:
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partition_table = None
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with open(partition_table_file, "rb") as f:
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input_is_binary = (f.read(2) == gen.PartitionDefinition.MAGIC_BYTES)
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f.seek(0)
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if input_is_binary:
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partition_table = gen.PartitionTable.from_binary(f.read())
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if partition_table is None:
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with open(partition_table_file, "r") as f:
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f.seek(0)
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partition_table = gen.PartitionTable.from_csv(f.read())
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else:
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temp_file = tempfile.NamedTemporaryFile(delete=False)
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temp_file.close()
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try:
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self._call_esptool(["read_flash", str(partition_table_offset), str(gen.MAX_PARTITION_LENGTH), temp_file.name])
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with open(temp_file.name, "rb") as f:
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partition_table = gen.PartitionTable.from_binary(f.read())
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finally:
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os.unlink(temp_file.name)
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self.partition_table = partition_table
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def _call_esptool(self, args, out=None):
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esptool_args = [sys.executable, ESPTOOL_PY] + self.esptool_args
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if self.port:
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esptool_args += ["--port", self.port]
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if self.baud:
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esptool_args += ["--baud", str(self.baud)]
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esptool_args += args
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with open(os.devnull, "w") as null_file:
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subprocess.check_call(esptool_args, stdout=null_file, stderr=null_file)
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def get_partition_info(self, partition_id):
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partition = None
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if partition_id.name:
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partition = self.partition_table.find_by_name(partition_id.name)
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elif partition_id.type and partition_id.subtype:
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partition = self.partition_table.find_by_type(partition_id.type, partition_id.subtype)
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else: # default boot partition
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search = ["factory"] + ["ota_{}".format(d) for d in range(16)]
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for subtype in search:
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partition = self.partition_table.find_by_type("app", subtype)
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if partition:
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break
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if not partition:
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raise Exception("Partition does not exist")
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return partition
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def erase_partition(self, partition_id):
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partition = self.get_partition_info(partition_id)
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self._call_esptool(["erase_region", str(partition.offset), str(partition.size)] + self.esptool_erase_args)
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def read_partition(self, partition_id, output):
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partition = self.get_partition_info(partition_id)
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self._call_esptool(["read_flash", str(partition.offset), str(partition.size), output] + self.esptool_read_args)
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def write_partition(self, partition_id, input):
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self.erase_partition(partition_id)
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partition = self.get_partition_info(partition_id)
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with open(input, "rb") as input_file:
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content_len = len(input_file.read())
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if content_len > partition.size:
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raise Exception("Input file size exceeds partition size")
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self._call_esptool(["write_flash", str(partition.offset), input] + self.esptool_write_args)
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def _write_partition(target, partition_id, input):
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target.write_partition(partition_id, input)
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partition = target.get_partition_info(partition_id)
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status("Written contents of file '{}' at offset 0x{:x}".format(input, partition.offset))
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def _read_partition(target, partition_id, output):
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target.read_partition(partition_id, output)
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partition = target.get_partition_info(partition_id)
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status("Read partition '{}' contents from device at offset 0x{:x} to file '{}'"
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.format(partition.name, partition.offset, output))
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def _erase_partition(target, partition_id):
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target.erase_partition(partition_id)
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partition = target.get_partition_info(partition_id)
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status("Erased partition '{}' at offset 0x{:x}".format(partition.name, partition.offset))
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def _get_partition_info(target, partition_id, info):
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try:
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partition = target.get_partition_info(partition_id)
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except Exception:
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return
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info_dict = {
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"offset": '0x{:x}'.format(partition.offset),
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"size": '0x{:x}'.format(partition.size)
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}
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infos = []
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try:
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for i in info:
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infos += [info_dict[i]]
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except KeyError:
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raise RuntimeError("Request for unknown partition info {}".format(i))
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print(" ".join(infos))
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def main():
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global quiet
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parser = argparse.ArgumentParser("ESP-IDF Partitions Tool")
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parser.add_argument("--quiet", "-q", help="suppress stderr messages", action="store_true")
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parser.add_argument("--esptool-args", help="additional main arguments for esptool", nargs="+")
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parser.add_argument("--esptool-write-args", help="additional subcommand arguments when writing to flash", nargs="+")
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parser.add_argument("--esptool-read-args", help="additional subcommand arguments when reading flash", nargs="+")
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parser.add_argument("--esptool-erase-args", help="additional subcommand arguments when erasing regions of flash", nargs="+")
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# By default the device attached to the specified port is queried for the partition table. If a partition table file
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# is specified, that is used instead.
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parser.add_argument("--port", "-p", help="port where the target device of the command is connected to; the partition table is sourced from this device \
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when the partition table file is not defined")
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parser.add_argument("--baud", "-b", help="baudrate to use", type=int)
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parser.add_argument("--partition-table-offset", "-o", help="offset to read the partition table from", type=str)
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parser.add_argument("--partition-table-file", "-f", help="file (CSV/binary) to read the partition table from; \
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overrides device attached to specified port as the partition table source when defined")
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partition_selection_parser = argparse.ArgumentParser(add_help=False)
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# Specify what partition to perform the operation on. This can either be specified using the
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# partition name or the first partition that matches the specified type/subtype
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partition_selection_args = partition_selection_parser.add_mutually_exclusive_group()
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partition_selection_args.add_argument("--partition-name", "-n", help="name of the partition")
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partition_selection_args.add_argument("--partition-type", "-t", help="type of the partition")
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partition_selection_args.add_argument('--partition-boot-default', "-d", help='select the default boot partition \
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using the same fallback logic as the IDF bootloader', action="store_true")
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partition_selection_parser.add_argument("--partition-subtype", "-s", help="subtype of the partition")
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subparsers = parser.add_subparsers(dest="operation", help="run parttool -h for additional help")
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# Specify the supported operations
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read_part_subparser = subparsers.add_parser("read_partition", help="read partition from device and dump contents into a file",
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parents=[partition_selection_parser])
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read_part_subparser.add_argument("--output", help="file to dump the read partition contents to")
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write_part_subparser = subparsers.add_parser("write_partition", help="write contents of a binary file to partition on device",
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parents=[partition_selection_parser])
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write_part_subparser.add_argument("--input", help="file whose contents are to be written to the partition offset")
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subparsers.add_parser("erase_partition", help="erase the contents of a partition on the device", parents=[partition_selection_parser])
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print_partition_info_subparser = subparsers.add_parser("get_partition_info", help="get partition information", parents=[partition_selection_parser])
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print_partition_info_subparser.add_argument("--info", help="type of partition information to get",
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choices=["offset", "size"], default=["offset", "size"], nargs="+")
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args = parser.parse_args()
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quiet = args.quiet
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# No operation specified, display help and exit
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if args.operation is None:
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if not quiet:
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parser.print_help()
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sys.exit(1)
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# Prepare the partition to perform operation on
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if args.partition_name:
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partition_id = PartitionName(args.partition_name)
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elif args.partition_type:
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if not args.partition_subtype:
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raise RuntimeError("--partition-subtype should be defined when --partition-type is defined")
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partition_id = PartitionType(args.partition_type, args.partition_subtype)
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elif args.partition_boot_default:
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partition_id = PARTITION_BOOT_DEFAULT
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else:
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raise RuntimeError("Partition to operate on should be defined using --partition-name OR \
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partition-type,--partition-subtype OR partition-boot-default")
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# Prepare the device to perform operation on
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target_args = {}
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if args.port:
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target_args["port"] = args.port
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if args.baud:
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target_args["baud"] = args.baud
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if args.partition_table_file:
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target_args["partition_table_file"] = args.partition_table_file
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if args.partition_table_offset:
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target_args["partition_table_offset"] = int(args.partition_table_offset, 0)
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if args.esptool_args:
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target_args["esptool_args"] = args.esptool_args
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if args.esptool_write_args:
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target_args["esptool_write_args"] = args.esptool_write_args
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if args.esptool_read_args:
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target_args["esptool_read_args"] = args.esptool_read_args
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if args.esptool_erase_args:
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target_args["esptool_erase_args"] = args.esptool_erase_args
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target = ParttoolTarget(**target_args)
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# Create the operation table and execute the operation
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common_args = {'target':target, 'partition_id':partition_id}
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parttool_ops = {
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'erase_partition':(_erase_partition, []),
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'read_partition':(_read_partition, ["output"]),
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'write_partition':(_write_partition, ["input"]),
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'get_partition_info':(_get_partition_info, ["info"])
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}
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(op, op_args) = parttool_ops[args.operation]
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for op_arg in op_args:
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common_args.update({op_arg:vars(args)[op_arg]})
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if quiet:
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# If exceptions occur, suppress and exit quietly
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try:
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op(**common_args)
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except Exception:
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sys.exit(2)
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else:
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try:
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op(**common_args)
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except gen.InputError as e:
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print(e, file=sys.stderr)
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sys.exit(2)
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if __name__ == '__main__':
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main()
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