mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-18 13:26:34 +00:00
3d7040b7d6
For some reason the new belkin-header.py script works without issues
in a local Fedora build environment. In the OpenWrt build pipeline it
produces the following errors:
Traceback (most recent call last):
File "/builder/shared-workdir/build/scripts/belkin-header.py", line 92, in <module>
head = create_header(buf, args.belkin_header, args.belkin_model)
File "/builder/shared-workdir/build/scripts/belkin-header.py", line 68, in create_header
head[28:29] = VERSION1.to_bytes(1)
TypeError: to_bytes() missing required argument 'byteorder' (pos 2)
This may be related due to different python version. Fix this by
handing over the needed parameters
Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Link: https://github.com/openwrt/openwrt/pull/16667
Signed-off-by: Robert Marko <robimarko@gmail.com>
95 lines
2.7 KiB
Python
Executable File
95 lines
2.7 KiB
Python
Executable File
#!/usr/bin/python3
|
|
# SPDX-License-Identifier: GPL-2.0-or-later
|
|
#
|
|
# Copyright (C) 2024 OpenWrt.org
|
|
#
|
|
# ./belkin-header.py <ImageFileIn> <ImageFileOut> <BelkinHeader> <BelkinModel>
|
|
#
|
|
# This script adds an image header for Belkin devices. As of now only Realtek
|
|
# based switches of the Linksys LGS3xxC/LGS3xxMPC series are known to use this
|
|
# format. It resembles a U-Boot legacy format image header, all data in network
|
|
# byte order (aka natural aka big endian).
|
|
#
|
|
# Known values for BelkinHeader are
|
|
#
|
|
# 0x07800001 : RTL838x based switch
|
|
# 0x07600001 : RTL93xx based switch
|
|
#
|
|
# Known values for BelkinModel are
|
|
#
|
|
# BKS-RTL83xx : RTL838x based switch
|
|
# BKS-RTL93xx : RTL93xx based switch
|
|
|
|
import argparse
|
|
import os
|
|
import zlib
|
|
import array
|
|
import sys
|
|
import time
|
|
|
|
VERSION1 = 1
|
|
VERSION2 = 1
|
|
VERSION3 = 2
|
|
VERSION4 = 2
|
|
COMPANY = "belkin"
|
|
MODULE = "IMG"
|
|
|
|
def xcrc32(buf):
|
|
return (0xffffffff - zlib.crc32(buf, 0xffffffff)).to_bytes(4, byteorder='big')
|
|
|
|
def encode_model(model):
|
|
map = " 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-"
|
|
code = bytearray()
|
|
|
|
code.append(map.index(model[:1]))
|
|
model = model[1:]
|
|
model = model + " " * (3 - len(model) % 4)
|
|
|
|
while model != "":
|
|
b1 = map.index(model[0:1])
|
|
b2 = map.index(model[1:2])
|
|
b3 = map.index(model[2:3])
|
|
b4 = map.index(model[3:4])
|
|
model = model[4:]
|
|
|
|
code.append(b1 << 2 | b2 >> 4)
|
|
code.append((b2 & 0xf) << 4 | b3 >> 2)
|
|
code.append((b3 & 0x3) << 6 | b4)
|
|
|
|
return code
|
|
|
|
def create_header(buf, belkin_header, belkin_model):
|
|
head = bytearray(32)
|
|
|
|
head[0:4] = int(belkin_header, 0).to_bytes(4, 'big')
|
|
head[8:12] = int(time.time()).to_bytes(4, 'big')
|
|
head[12:16] = len(buf).to_bytes(4, byteorder='big')
|
|
head[24:28] = xcrc32(buf)
|
|
head[28:29] = VERSION1.to_bytes(1, byteorder='big')
|
|
head[29:30] = VERSION2.to_bytes(1, byteorder='big')
|
|
head[30:31] = VERSION3.to_bytes(1, byteorder='big')
|
|
head[31:32] = VERSION4.to_bytes(1, byteorder='big')
|
|
head[16:16 + len(COMPANY)] = bytes(COMPANY,'ascii')
|
|
|
|
mod = MODULE + "-{:1d}.{:02d}.{:02d}.{:02d}".format(VERSION1, VERSION2, VERSION3, VERSION4)
|
|
head.extend(bytes(mod,'ascii'))
|
|
head.append(0x00)
|
|
head.extend(encode_model(belkin_model))
|
|
head.extend(bytes([0x00] * (64 - len(head))))
|
|
|
|
head[4:8] = xcrc32(head)
|
|
|
|
return head
|
|
|
|
parser = argparse.ArgumentParser(description='Generate Belkin header.')
|
|
parser.add_argument('source', type=argparse.FileType('r+b'))
|
|
parser.add_argument('dest', type=argparse.FileType('wb'))
|
|
parser.add_argument('belkin_header')
|
|
parser.add_argument('belkin_model')
|
|
args = parser.parse_args()
|
|
|
|
buf = bytearray(args.source.read())
|
|
head = create_header(buf, args.belkin_header, args.belkin_model)
|
|
args.dest.write(head)
|
|
args.dest.write(buf)
|