OVMS3-idf/components/partition_table/parttool.py

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#!/usr/bin/env python
#
# parttool returns info about the required partition.
#
# This utility is used by the make system to get information
# about the start addresses: partition table, factory area, phy area.
#
# Copyright 2018 Espressif Systems (Shanghai) PTE LTD
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http:#www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import print_function, division
import argparse
import os
import re
import struct
import sys
import hashlib
import binascii
import gen_esp32part as gen
__version__ = '1.0'
quiet = False
def status(msg):
""" Print status message to stderr """
if not quiet:
critical(msg)
def critical(msg):
""" Print critical message to stderr """
if not quiet:
sys.stderr.write(msg)
sys.stderr.write('\n')
def main():
global quiet
parser = argparse.ArgumentParser(description='Returns info about the required partition.')
parser.add_argument('--quiet', '-q', help="Don't print status messages to stderr", action='store_true')
search_type = parser.add_mutually_exclusive_group()
search_type.add_argument('--partition-name', '-p', help='The name of the required partition', type=str, default=None)
search_type.add_argument('--type', '-t', help='The type of the required partition', type=str, default=None)
search_type.add_argument('--default-boot-partition', help='Select the default boot partition, '+
'using the same fallback logic as the IDF bootloader', action="store_true")
parser.add_argument('--subtype', '-s', help='The subtype of the required partition', type=str, default=None)
parser.add_argument('--offset', '-o', help='Return offset of required partition', action="store_true")
parser.add_argument('--size', help='Return size of required partition', action="store_true")
parser.add_argument('input', help='Path to CSV or binary file to parse. Will use stdin if omitted.',
type=argparse.FileType('rb'), default=sys.stdin)
args = parser.parse_args()
if args.type is not None and args.subtype is None:
status("If --type is specified, --subtype is required")
return 2
if args.type is None and args.subtype is not None:
status("--subtype is only used with --type")
return 2
quiet = args.quiet
input = args.input.read()
input_is_binary = input[0:2] == gen.PartitionDefinition.MAGIC_BYTES
if input_is_binary:
status("Parsing binary partition input...")
table = gen.PartitionTable.from_binary(input)
else:
input = input.decode()
status("Parsing CSV input...")
table = gen.PartitionTable.from_csv(input)
found_partition = None
if args.default_boot_partition:
search = [ "factory" ] + [ "ota_%d" % d for d in range(16) ]
for subtype in search:
found_partition = table.find_by_type("app", subtype)
if found_partition is not None:
break
elif args.partition_name is not None:
found_partition = table.find_by_name(args.partition_name)
elif args.type is not None:
found_partition = table.find_by_type(args.type, args.subtype)
else:
raise RuntimeError("invalid partition selection choice")
if found_partition is None:
return 1 # nothing found
if args.offset:
print('0x%x ' % (found_partition.offset))
if args.size:
print('0x%x' % (found_partition.size))
return 0
class InputError(RuntimeError):
def __init__(self, e):
super(InputError, self).__init__(e)
class ValidationError(InputError):
def __init__(self, partition, message):
super(ValidationError, self).__init__(
"Partition %s invalid: %s" % (partition.name, message))
if __name__ == '__main__':
try:
r = main()
sys.exit(r)
except InputError as e:
print(e, file=sys.stderr)
sys.exit(2)