2022-10-30 00:00:55 +02:00

118 lines
2.8 KiB
Python
Executable File

#!/usr/bin/env python3
# Copyright (C) 2016 Furrtek
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street,
# Boston, MA 02110-1301, USA.
#
import sys
import struct
import md5
usage_message = """
Baseband module package file generator
Usage: <command> <module_name> <module_name>...
"""
def read_image(path):
f = open(path, 'rb')
data = f.read()
f.close()
return data
def write_file(data, path):
f = open(path, 'wb')
f.write(data)
f.close()
if len(sys.argv) == 1:
print(usage_message)
sys.exit(-1)
data = bytearray()
h_data = bytearray()
name = bytearray()
info = bytearray()
description = bytearray()
data_default_byte = bytearray((0,))
sys.argv = sys.argv[1:]
# Format for module file:
# Magic (4), Version (2), Length (4), Name (16), MD5 (16), Description (214)
# 0x00 pad bytes (256)
# Module binary (padded to 32768-16)
# MD5 (16) again, so that module code can read it (dirty...)
for args in sys.argv:
m = md5.new()
data = read_image(args + '/build/' + args + '.bin')
data_r = data
# Magic bytes
info = 'PPM '
# Version
info += struct.pack('H', 2)
# Length
info += struct.pack('I', len(data))
# Module name
name = read_image(args + '/name')
if len(name) > 16:
name = name[0:15]
pad_size = 16 - len(name)
name += (data_default_byte * pad_size)
info += name
# Module MD5 footprint
m.update(data)
digest = m.digest()
pad_size = 16 - len(digest)
digest += (data_default_byte * pad_size)
info += digest
# Module description
description = read_image(args + '/description')
if len(description) > 214:
description = description[0:213]
pad_size = 214 - len(description)
description += (data_default_byte * pad_size)
info += description
# Header padding to fit in SD card sector
info += (data_default_byte * 256)
# Binary padding
data = info + data
pad_size = (32768 + 512 - 16) - len(data)
data += (data_default_byte * pad_size)
data += digest
write_file(data, args + '.bin')
# Add to modules.h
md5sum = ''
for byte in digest:
md5sum += '0x' + format(byte, '02x') + ','
h_data += 'const char md5_' + args.replace('-','_') + '[16] = {' + md5sum + '};\n'
# Update original binary with MD5 footprint
write_file(data[512:(32768+512)], args + '/build/' + args + '_inc.bin')
write_file(h_data, 'common/modules.h')