mirror of
https://github.com/espressif/esp-idf.git
synced 2025-11-04 09:01:40 +01:00
318 lines
11 KiB
Python
Executable File
318 lines
11 KiB
Python
Executable File
#!/usr/bin/env python
|
|
#
|
|
# ESP32 partition table generation tool
|
|
#
|
|
# Converts partition tables to/from CSV and binary formats.
|
|
#
|
|
# See the sdkng README.md file for details about how to use this tool.
|
|
import struct
|
|
import argparse
|
|
import sys
|
|
|
|
MAX_PARTITION_LENGTH = 0xC00 # 3K for partition data (96 entries) leaves 1K in a 4K sector for signature
|
|
|
|
__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')
|
|
|
|
class PartitionTable(list):
|
|
def __init__(self):
|
|
super(PartitionTable, self).__init__(self)
|
|
|
|
@classmethod
|
|
def from_csv(cls, csv_contents):
|
|
res = PartitionTable()
|
|
lines = csv_contents.split("\n")
|
|
for line_no in range(len(lines)):
|
|
line = lines[line_no].strip()
|
|
if line.startswith("#") or len(line) == 0:
|
|
continue
|
|
try:
|
|
res.append(PartitionDefinition.from_csv(line))
|
|
except InputError as e:
|
|
raise InputError("Error at line %d: %s" % (line_no+1, e))
|
|
except Exception:
|
|
critical("Unexpected error parsing line %d: %s" % (line_no+1, line))
|
|
raise
|
|
|
|
# fix up missing offsets & negative sizes
|
|
last_end = 0x5000 # first offset after partition table
|
|
for e in res:
|
|
if e.offset is None:
|
|
pad_to = 0x10000 if e.type == PartitionDefinition.APP_TYPE else 4
|
|
if last_end % pad_to != 0:
|
|
last_end += pad_to - (last_end % pad_to)
|
|
e.offset = last_end
|
|
if e.size < 0:
|
|
e.size = -e.size - e.offset
|
|
last_end = e.offset + e.size
|
|
|
|
return res
|
|
|
|
def __getitem__(self, item):
|
|
""" Allow partition table access via name as well as by
|
|
numeric index. """
|
|
if isinstance(item, str):
|
|
for x in self:
|
|
if x.name == item:
|
|
return x
|
|
raise ValueError("No partition entry named '%s'" % item)
|
|
else:
|
|
return super(PartitionTable, self).__getitem__(item)
|
|
|
|
def verify(self):
|
|
# verify each partition individually
|
|
for p in self:
|
|
p.verify()
|
|
# check for overlaps
|
|
last = None
|
|
for p in sorted(self):
|
|
if p.offset < 0x5000:
|
|
raise InputError("Partition offset 0x%x is below 0x5000" % p.offset)
|
|
if last is not None and p.offset < last.offset + last.size:
|
|
raise InputError("Partition at 0x%x overlaps 0x%x-0x%x" % (p.offset, last.offset, last.offset+last.size-1))
|
|
last = p
|
|
|
|
@classmethod
|
|
def from_binary(cls, b):
|
|
result = cls()
|
|
for o in range(0,len(b),32):
|
|
data = b[o:o+32]
|
|
if len(data) != 32:
|
|
raise InputError("Ran out of partition table data before reaching end marker")
|
|
if data == '\xFF'*32:
|
|
break # end of partition table
|
|
result.append(PartitionDefinition.from_binary(data))
|
|
return result
|
|
|
|
def to_binary(self):
|
|
result = "".join(e.to_binary() for e in self)
|
|
if len(result )>= MAX_PARTITION_LENGTH:
|
|
raise InputError("Binary partition table length (%d) longer than max" % len(result))
|
|
result += "\xFF" * (MAX_PARTITION_LENGTH - len(result)) # pad the sector, for signing
|
|
return result
|
|
|
|
def to_csv(self, simple_formatting=False):
|
|
rows = [ "# Espressif ESP32 Partition Table",
|
|
"# Name, Type, SubType, Offset, Size" ]
|
|
rows += [ x.to_csv(simple_formatting) for x in self ]
|
|
return "\n".join(rows) + "\n"
|
|
|
|
class PartitionDefinition(object):
|
|
APP_TYPE = 0x00
|
|
DATA_TYPE = 0x01
|
|
TYPES = {
|
|
"app" : APP_TYPE,
|
|
"data" : DATA_TYPE,
|
|
}
|
|
|
|
SUBTYPES = {
|
|
APP_TYPE : {
|
|
"factory" : 0x00,
|
|
"test" : 0x20,
|
|
},
|
|
DATA_TYPE : {
|
|
"ota" : 0x00,
|
|
"rf" : 0x01,
|
|
"wifi" : 0x02,
|
|
},
|
|
}
|
|
|
|
MAGIC_BYTES = "\xAA\x50"
|
|
|
|
ALIGNMENT = {
|
|
APP_TYPE : 0x1000,
|
|
DATA_TYPE : 0x04,
|
|
}
|
|
|
|
# add subtypes for the 16 OTA slot values ("ota_XXX, etc.")
|
|
for ota_slot in range(16):
|
|
SUBTYPES[TYPES["app"]]["ota_%d" % ota_slot] = 0x10 + ota_slot
|
|
|
|
def __init__(self):
|
|
self.name = ""
|
|
self.type = None
|
|
self.subtype = None
|
|
self.offset = None
|
|
self.size = None
|
|
|
|
@classmethod
|
|
def from_csv(cls, line):
|
|
""" Parse a line from the CSV """
|
|
line_w_defaults = line + ",,," # lazy way to support default fields
|
|
fields = [ f.strip() for f in line_w_defaults.split(",") ]
|
|
|
|
res = PartitionDefinition()
|
|
res.name = fields[0]
|
|
res.type = res.parse_type(fields[1])
|
|
res.subtype = res.parse_subtype(fields[2])
|
|
res.offset = res.parse_address(fields[3])
|
|
res.size = res.parse_address(fields[4])
|
|
if res.size is None:
|
|
raise InputError("Size field can't be empty")
|
|
return res
|
|
|
|
def __eq__(self, other):
|
|
return self.name == other.name and self.type == other.type \
|
|
and self.subtype == other.subtype and self.offset == other.offset \
|
|
and self.size == other.size
|
|
|
|
def __repr__(self):
|
|
def maybe_hex(x):
|
|
return "0x%x" % x if x is not None else "None"
|
|
return "PartitionDefinition('%s', 0x%x, 0x%x, %s, %s)" % (self.name, self.type, self.subtype or 0,
|
|
maybe_hex(self.offset), maybe_hex(self.size))
|
|
|
|
def __str__(self):
|
|
return "Part '%s' %d/%d @ 0x%x size 0x%x" % (self.name, self.type, self.subtype, self.offset or -1, self.size or -1)
|
|
|
|
def __cmp__(self, other):
|
|
return self.offset - other.offset
|
|
|
|
def parse_type(self, strval):
|
|
if strval == "":
|
|
raise InputError("Field 'type' can't be left empty.")
|
|
return parse_int(strval, self.TYPES)
|
|
|
|
def parse_subtype(self, strval):
|
|
if strval == "":
|
|
return 0 # default
|
|
return parse_int(strval, self.SUBTYPES.get(self.type, {}))
|
|
|
|
def parse_address(self, strval):
|
|
if strval == "":
|
|
return None # PartitionTable will fill in default
|
|
return parse_int(strval)
|
|
|
|
def verify(self):
|
|
if self.type is None:
|
|
raise ValidationError("Type field is not set")
|
|
if self.subtype is None:
|
|
raise ValidationError("Subtype field is not set")
|
|
if self.offset is None:
|
|
raise ValidationError("Offset field is not set")
|
|
align = self.ALIGNMENT.get(self.type, 4)
|
|
if self.offset % align:
|
|
raise ValidationError("%s offset 0x%x is not aligned to 0x%x" % (self.name, self.offset, align))
|
|
if self.size is None:
|
|
raise ValidationError("Size field is not set")
|
|
|
|
STRUCT_FORMAT = "<2sBBLL16sL"
|
|
|
|
@classmethod
|
|
def from_binary(cls, b):
|
|
if len(b) != 32:
|
|
raise InputError("Partition definition length must be exactly 32 bytes. Got %d bytes." % len(b))
|
|
res = cls()
|
|
(magic, res.type, res.subtype, res.offset,
|
|
res.size, res.name, reserved) = struct.unpack(cls.STRUCT_FORMAT, b)
|
|
if "\x00" in res.name: # strip null byte padding from name string
|
|
res.name = res.name[:res.name.index("\x00")]
|
|
if magic != cls.MAGIC_BYTES:
|
|
raise InputError("Invalid magic bytes (%r) for partition definition" % magic)
|
|
if reserved != 0:
|
|
critical("WARNING: Partition definition had unexpected reserved value 0x%08x. Newer binary format?" % reserved)
|
|
return res
|
|
|
|
def to_binary(self):
|
|
return struct.pack(self.STRUCT_FORMAT,
|
|
self.MAGIC_BYTES,
|
|
self.type, self.subtype,
|
|
self.offset, self.size,
|
|
self.name,
|
|
0) # reserved
|
|
|
|
def to_csv(self, simple_formatting=False):
|
|
def addr_format(a, include_sizes):
|
|
if not simple_formatting and include_sizes:
|
|
for (val, suffix) in [ (0x100000, "M"), (0x400, "K") ]:
|
|
if a % val == 0:
|
|
return "%d%s" % (a / val, suffix)
|
|
return "0x%x" % a
|
|
|
|
def lookup_keyword(t, keywords):
|
|
for k,v in keywords.items():
|
|
if simple_formatting == False and t == v:
|
|
return k
|
|
return "%d" % t
|
|
|
|
return ",".join([ self.name,
|
|
lookup_keyword(self.type, self.TYPES),
|
|
lookup_keyword(self.subtype, self.SUBTYPES.get(self.type, {})),
|
|
addr_format(self.offset, False),
|
|
addr_format(self.size, True) ])
|
|
|
|
class InputError(RuntimeError):
|
|
def __init__(self, e):
|
|
super(InputError, self).__init__(e)
|
|
|
|
def parse_int(v, keywords={}):
|
|
"""Generic parser for integer fields - int(x,0) with provision for
|
|
k/m/K/M suffixes and 'keyword' value lookup.
|
|
"""
|
|
try:
|
|
for letter, multiplier in [ ("k",1024), ("m",1024*1024) ]:
|
|
if v.lower().endswith(letter):
|
|
return parse_int(v[:-1], keywords) * multiplier
|
|
return int(v, 0)
|
|
except ValueError:
|
|
if len(keywords) == 0:
|
|
raise InputError("Invalid field value %s" % v)
|
|
try:
|
|
return keywords[v.lower()]
|
|
except KeyError:
|
|
raise InputError("Value '%s' is not valid. Known keywords: %s" % (v, ", ".join(keywords)))
|
|
|
|
def main():
|
|
global quiet
|
|
parser = argparse.ArgumentParser(description='ESP32 partition table utility')
|
|
|
|
parser.add_argument('--verify', '-v', help='Verify partition table fields', default=True, action='store_false')
|
|
parser.add_argument('--quiet', '-q', help="Don't print status messages to stderr", action='store_true')
|
|
|
|
parser.add_argument('input', help='Path to CSV or binary file to parse. Will use stdin if omitted.', type=argparse.FileType('r'), default=sys.stdin)
|
|
parser.add_argument('output', help='Path to output converted binary or CSV file. Will use stdout if omitted, unless the --display argument is also passed (in which case only the summary is printed.)',
|
|
nargs='?',
|
|
default='-')
|
|
|
|
args = parser.parse_args()
|
|
|
|
quiet = args.quiet
|
|
input = args.input.read()
|
|
input_is_binary = input[0:2] == PartitionDefinition.MAGIC_BYTES
|
|
if input_is_binary:
|
|
status("Parsing binary partition input...")
|
|
table = PartitionTable.from_binary(input)
|
|
else:
|
|
status("Parsing CSV input...")
|
|
table = PartitionTable.from_csv(input)
|
|
|
|
if args.verify:
|
|
status("Verifying table...")
|
|
table.verify()
|
|
|
|
if input_is_binary:
|
|
output = table.to_csv()
|
|
else:
|
|
output = table.to_binary()
|
|
with sys.stdout if args.output == '-' else open(args.output, 'w') as f:
|
|
f.write(output)
|
|
|
|
if __name__ == '__main__':
|
|
try:
|
|
main()
|
|
except InputError as e:
|
|
print(e)
|
|
sys.exit(2)
|