37 lines
1.1 KiB
Python
37 lines
1.1 KiB
Python
|
#!/usr/bin/env python3
|
||
|
|
|
||
|
|
import argparse
|
||
|
|
import binascii
|
||
|
|
|
||
|
|
|
||
|
|
def insert_crc(i_filename, fbi_mode=False, o_filename=None):
|
||
|
|
if o_filename is None:
|
||
|
|
o_filename = i_filename
|
||
|
|
|
||
|
|
with open(i_filename, "rb") as f:
|
||
|
|
fdata = f.read()
|
||
|
|
fcrc = binascii.crc32(fdata).to_bytes(4, byteorder="big")
|
||
|
|
flength = len(fdata).to_bytes(4, byteorder="big")
|
||
|
|
|
||
|
|
with open(o_filename, "wb") as f:
|
||
|
|
if fbi_mode:
|
||
|
|
f.write(flength)
|
||
|
|
f.write(fcrc)
|
||
|
|
f.write(fdata)
|
||
|
|
else:
|
||
|
|
f.write(fdata)
|
||
|
|
f.write(fcrc)
|
||
|
|
|
||
|
|
|
||
|
|
def main():
|
||
|
|
parser = argparse.ArgumentParser(description="CRC32 computation tool and MiSoC image file writer.")
|
||
|
|
parser.add_argument("input", help="input file")
|
||
|
|
parser.add_argument("-o", "--output", default=None, help="output file (if not specified, use input file)")
|
||
|
|
parser.add_argument("-f", "--fbi", default=False, action="store_true", help="build flash boot image (FBI) file")
|
||
|
|
args = parser.parse_args()
|
||
|
|
insert_crc(args.input, args.fbi, args.output)
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == "__main__":
|
||
|
|
main()
|