esp-idf/components/partition_table/parttool.py

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#!/usr/bin/env python
#
# parttool is used to perform partition level operations - reading,
# writing, erasing and getting info about the partition.
#
# SPDX-FileCopyrightText: 2018-2022 Espressif Systems (Shanghai) CO LTD
# SPDX-License-Identifier: Apache-2.0
from __future__ import division, print_function
import argparse
import os
import re
import subprocess
import sys
import tempfile
import gen_esp32part as gen
__version__ = '2.0'
COMPONENTS_PATH = os.path.expandvars(os.path.join('$IDF_PATH', 'components'))
ESPTOOL_PY = os.path.join(COMPONENTS_PATH, 'esptool_py', 'esptool', 'esptool.py')
PARTITION_TABLE_OFFSET = 0x8000
quiet = False
def status(msg):
if not quiet:
print(msg)
class _PartitionId():
def __init__(self, name=None, p_type=None, subtype=None, part_list=None):
self.name = name
self.type = p_type
self.subtype = subtype
self.part_list = part_list
class PartitionName(_PartitionId):
def __init__(self, name):
_PartitionId.__init__(self, name=name)
class PartitionType(_PartitionId):
def __init__(self, p_type, subtype, part_list=None):
_PartitionId.__init__(self, p_type=p_type, subtype=subtype, part_list=part_list)
PARTITION_BOOT_DEFAULT = _PartitionId()
class ParttoolTarget():
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=[]):
self.port = port
self.baud = baud
gen.offset_part_table = partition_table_offset
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def parse_esptool_args(esptool_args):
results = list()
for arg in esptool_args:
pattern = re.compile(r'(.+)=(.+)')
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result = pattern.match(arg)
try:
key = result.group(1)
value = result.group(2)
results.extend(['--' + key, value])
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except AttributeError:
results.extend(['--' + arg])
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return results
self.esptool_args = parse_esptool_args(esptool_args)
self.esptool_write_args = parse_esptool_args(esptool_write_args)
self.esptool_read_args = parse_esptool_args(esptool_read_args)
self.esptool_erase_args = parse_esptool_args(esptool_erase_args)
if partition_table_file:
partition_table = None
with open(partition_table_file, 'rb') as f:
input_is_binary = (f.read(2) == gen.PartitionDefinition.MAGIC_BYTES)
f.seek(0)
if input_is_binary:
partition_table = gen.PartitionTable.from_binary(f.read())
if partition_table is None:
with open(partition_table_file, 'r') as f:
f.seek(0)
partition_table = gen.PartitionTable.from_csv(f.read())
else:
temp_file = tempfile.NamedTemporaryFile(delete=False)
temp_file.close()
try:
self._call_esptool(['read_flash', str(partition_table_offset), str(gen.MAX_PARTITION_LENGTH), temp_file.name])
with open(temp_file.name, 'rb') as f:
partition_table = gen.PartitionTable.from_binary(f.read())
finally:
os.unlink(temp_file.name)
self.partition_table = partition_table
# set `out` to None to redirect the output to the STDOUT
# otherwise set `out` to file descriptor
# beware that the method does not close the file descriptor
def _call_esptool(self, args, out=None):
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esptool_args = [sys.executable, ESPTOOL_PY] + self.esptool_args
if self.port:
esptool_args += ['--port', self.port]
if self.baud:
esptool_args += ['--baud', str(self.baud)]
esptool_args += args
print('Running %s...' % (' '.join(esptool_args)))
try:
subprocess.check_call(esptool_args, stdout=out, stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as e:
print('An exception: **', str(e), '** occurred in _call_esptool.', file=out)
raise e
def get_partition_info(self, partition_id):
partition = None
if partition_id.name:
partition = self.partition_table.find_by_name(partition_id.name)
elif partition_id.type and partition_id.subtype:
partition = list(self.partition_table.find_by_type(partition_id.type, partition_id.subtype))
if not partition_id.part_list:
partition = partition[0]
else: # default boot partition
search = ['factory'] + ['ota_{}'.format(d) for d in range(16)]
for subtype in search:
partition = next(self.partition_table.find_by_type('app', subtype), None)
if partition:
break
if not partition:
raise Exception('Partition does not exist')
return partition
def erase_partition(self, partition_id):
partition = self.get_partition_info(partition_id)
self._call_esptool(['erase_region', str(partition.offset), str(partition.size)] + self.esptool_erase_args)
def read_partition(self, partition_id, output):
partition = self.get_partition_info(partition_id)
self._call_esptool(['read_flash', str(partition.offset), str(partition.size), output] + self.esptool_read_args)
def write_partition(self, partition_id, input):
self.erase_partition(partition_id)
partition = self.get_partition_info(partition_id)
with open(input, 'rb') as input_file:
content_len = len(input_file.read())
if content_len > partition.size:
raise Exception('Input file size exceeds partition size')
self._call_esptool(['write_flash', str(partition.offset), input] + self.esptool_write_args)
def _write_partition(target, partition_id, input):
target.write_partition(partition_id, input)
partition = target.get_partition_info(partition_id)
status("Written contents of file '{}' at offset 0x{:x}".format(input, partition.offset))
def _read_partition(target, partition_id, output):
target.read_partition(partition_id, output)
partition = target.get_partition_info(partition_id)
status("Read partition '{}' contents from device at offset 0x{:x} to file '{}'"
.format(partition.name, partition.offset, output))
def _erase_partition(target, partition_id):
target.erase_partition(partition_id)
partition = target.get_partition_info(partition_id)
status("Erased partition '{}' at offset 0x{:x}".format(partition.name, partition.offset))
def _get_partition_info(target, partition_id, info):
try:
partitions = target.get_partition_info(partition_id)
if not isinstance(partitions, list):
partitions = [partitions]
except Exception:
return
infos = []
try:
for p in partitions:
info_dict = {
'name': '{}'.format(p.name),
'type': '{}'.format(p.type),
'subtype': '{}'.format(p.subtype),
'offset': '0x{:x}'.format(p.offset),
'size': '0x{:x}'.format(p.size),
'encrypted': '{}'.format(p.encrypted)
}
for i in info:
infos += [info_dict[i]]
except KeyError:
raise RuntimeError('Request for unknown partition info {}'.format(i))
print(' '.join(infos))
def main():
global quiet
parser = argparse.ArgumentParser('ESP-IDF Partitions Tool')
parser.add_argument('--quiet', '-q', help='suppress stderr messages', action='store_true')
parser.add_argument('--esptool-args', help='additional main arguments for esptool', nargs='+')
parser.add_argument('--esptool-write-args', help='additional subcommand arguments when writing to flash', nargs='+')
parser.add_argument('--esptool-read-args', help='additional subcommand arguments when reading flash', nargs='+')
parser.add_argument('--esptool-erase-args', help='additional subcommand arguments when erasing regions of flash', nargs='+')
# By default the device attached to the specified port is queried for the partition table. If a partition table file
# is specified, that is used instead.
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 \
when the partition table file is not defined')
parser.add_argument('--baud', '-b', help='baudrate to use', type=int)
parser.add_argument('--partition-table-offset', '-o', help='offset to read the partition table from', type=str)
parser.add_argument('--partition-table-file', '-f', help='file (CSV/binary) to read the partition table from; \
overrides device attached to specified port as the partition table source when defined')
partition_selection_parser = argparse.ArgumentParser(add_help=False)
# Specify what partition to perform the operation on. This can either be specified using the
# partition name or the first partition that matches the specified type/subtype
partition_selection_args = partition_selection_parser.add_mutually_exclusive_group()
partition_selection_args.add_argument('--partition-name', '-n', help='name of the partition')
partition_selection_args.add_argument('--partition-type', '-t', help='type of the partition')
partition_selection_args.add_argument('--partition-boot-default', '-d', help='select the default boot partition \
using the same fallback logic as the IDF bootloader', action='store_true')
partition_selection_parser.add_argument('--partition-subtype', '-s', help='subtype of the partition')
subparsers = parser.add_subparsers(dest='operation', help='run parttool -h for additional help')
# Specify the supported operations
read_part_subparser = subparsers.add_parser('read_partition', help='read partition from device and dump contents into a file',
parents=[partition_selection_parser])
read_part_subparser.add_argument('--output', help='file to dump the read partition contents to')
write_part_subparser = subparsers.add_parser('write_partition', help='write contents of a binary file to partition on device',
parents=[partition_selection_parser])
write_part_subparser.add_argument('--input', help='file whose contents are to be written to the partition offset')
subparsers.add_parser('erase_partition', help='erase the contents of a partition on the device', parents=[partition_selection_parser])
print_partition_info_subparser = subparsers.add_parser('get_partition_info', help='get partition information', parents=[partition_selection_parser])
print_partition_info_subparser.add_argument('--info', help='type of partition information to get',
choices=['name', 'type', 'subtype', 'offset', 'size', 'encrypted'], default=['offset', 'size'], nargs='+')
print_partition_info_subparser.add_argument('--part_list', help='Get a list of partitions suitable for a given type', action='store_true')
print_partition_info_subparser.add_argument('--extra-partition-subtypes', help='Extra partition subtype entries', nargs='*')
args = parser.parse_args()
quiet = args.quiet
# No operation specified, display help and exit
if args.operation is None:
if not quiet:
parser.print_help()
sys.exit(1)
# Prepare the partition to perform operation on
if args.partition_name:
partition_id = PartitionName(args.partition_name)
elif args.partition_type:
if not args.partition_subtype:
raise RuntimeError('--partition-subtype should be defined when --partition-type is defined')
partition_id = PartitionType(args.partition_type, args.partition_subtype, getattr(args, 'part_list', None))
elif args.partition_boot_default:
partition_id = PARTITION_BOOT_DEFAULT
else:
raise RuntimeError('Partition to operate on should be defined using --partition-name OR \
partition-type,--partition-subtype OR partition-boot-default')
# Prepare the device to perform operation on
target_args = {}
if args.port:
target_args['port'] = args.port
if args.baud:
target_args['baud'] = args.baud
if args.partition_table_file:
target_args['partition_table_file'] = args.partition_table_file
if args.partition_table_offset:
target_args['partition_table_offset'] = int(args.partition_table_offset, 0)
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if args.esptool_args:
target_args['esptool_args'] = args.esptool_args
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if args.esptool_write_args:
target_args['esptool_write_args'] = args.esptool_write_args
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if args.esptool_read_args:
target_args['esptool_read_args'] = args.esptool_read_args
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if args.esptool_erase_args:
target_args['esptool_erase_args'] = args.esptool_erase_args
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if args.extra_partition_subtypes:
gen.add_extra_subtypes(args.extra_partition_subtypes)
target = ParttoolTarget(**target_args)
# Create the operation table and execute the operation
common_args = {'target':target, 'partition_id':partition_id}
parttool_ops = {
'erase_partition':(_erase_partition, []),
'read_partition':(_read_partition, ['output']),
'write_partition':(_write_partition, ['input']),
'get_partition_info':(_get_partition_info, ['info'])
}
(op, op_args) = parttool_ops[args.operation]
for op_arg in op_args:
common_args.update({op_arg:vars(args)[op_arg]})
if quiet:
# If exceptions occur, suppress and exit quietly
try:
op(**common_args)
except Exception:
sys.exit(2)
else:
try:
op(**common_args)
except gen.InputError as e:
print(e, file=sys.stderr)
sys.exit(2)
if __name__ == '__main__':
main()