mirror of
https://git.proxmox.com/git/fwupd
synced 2025-05-14 17:48:30 +00:00
83 lines
2.5 KiB
Python
Executable File
83 lines
2.5 KiB
Python
Executable File
#!/usr/bin/python3
|
|
#
|
|
# Copyright (C) 2019 Richard Hughes <richard@hughsie.com>
|
|
#
|
|
# SPDX-License-Identifier: LGPL-2.1+
|
|
|
|
import sys
|
|
import uuid
|
|
import argparse
|
|
import ctypes
|
|
|
|
CAPSULE_FLAGS_PERSIST_ACROSS_RESET = 0x00010000
|
|
CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE = 0x00020000
|
|
CAPSULE_FLAGS_INITIATE_RESET = 0x00040000
|
|
|
|
|
|
def add_header(infile, outfile, gd, fl=None):
|
|
# parse GUID from command line
|
|
try:
|
|
guid = uuid.UUID(gd)
|
|
except ValueError as e:
|
|
print(e)
|
|
return 1
|
|
import struct
|
|
|
|
try:
|
|
with open(infile, 'rb') as f:
|
|
bin_data = f.read()
|
|
except FileNotFoundError as e:
|
|
print(e)
|
|
return 1
|
|
|
|
# check if already has header
|
|
hdrsz = struct.calcsize('<16sIII')
|
|
if len(bin_data) >= hdrsz:
|
|
hdr = struct.unpack('<16sIII', bin_data[:hdrsz])
|
|
imgsz = hdr[3]
|
|
if imgsz == len(bin_data):
|
|
print('Replacing existing CAPSULE_HEADER of:')
|
|
guid_mixed = uuid.UUID(bytes_le=hdr[0])
|
|
hdrsz_old = hdr[1]
|
|
flags = hdr[2]
|
|
print('GUID: %s' % guid_mixed)
|
|
print('HdrSz: 0x%04x' % hdrsz_old)
|
|
print('Flags: 0x%04x' % flags)
|
|
print('PayloadSz: 0x%04x' % imgsz)
|
|
bin_data = bin_data[hdrsz_old:]
|
|
|
|
# set header flags
|
|
flags = (
|
|
CAPSULE_FLAGS_PERSIST_ACROSS_RESET
|
|
| CAPSULE_FLAGS_INITIATE_RESET
|
|
| CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE
|
|
)
|
|
if fl:
|
|
flags = int(fl, 16)
|
|
|
|
# build update capsule header
|
|
hdrsz = 4096
|
|
imgsz = hdrsz + len(bin_data)
|
|
hdr = ctypes.create_string_buffer(hdrsz)
|
|
struct.pack_into('<16sIII', hdr, 0, guid.bytes_le, hdrsz, flags, imgsz)
|
|
with open(outfile, 'wb') as f:
|
|
f.write(hdr)
|
|
f.write(bin_data)
|
|
print('Wrote capsule %s' % outfile)
|
|
print('GUID: %s' % guid)
|
|
print('HdrSz: 0x%04x' % hdrsz)
|
|
print('Flags: 0x%04x' % flags)
|
|
print('PayloadSz: 0x%04x' % imgsz)
|
|
return 0
|
|
|
|
|
|
if __name__ == '__main__':
|
|
parser = argparse.ArgumentParser(description='Add capsule header on firmware')
|
|
parser.add_argument('--guid', help='GUID of the device', required=True)
|
|
parser.add_argument('--bin', help='Path to the .bin file', required=True)
|
|
parser.add_argument('--cap', help='Output capsule file path', required=True)
|
|
parser.add_argument('--flags', help='Flags, e.g. 0x40000', default=None)
|
|
args = parser.parse_args()
|
|
|
|
sys.exit(add_header(args.bin, args.cap, args.guid, args.flags))
|