jedec2hex.py

from bitarray import bitarray
from bitarray.util import ba2hex
import re
import argparse

FUSES_PATTERN = re.compile(r'\*?L(\d+)\s(\d+)')

# GAL16v8 address space
# https://k1.spdns.de/Develop/Projects/GalAsm/info/galer/jedecfile.html
AND = 0000, 2047 # matrix of fuses (AND-array)
XOR = 2048, 2055 # XOR bits
SIG = 2056, 2119 # signature
AC1 = 2120, 2127 # AC1 bits
PE  = 2128, 2191 # product term disable bits
SYN = 2192       # SYN bit
AC0 = 2193       # AC0 bit 

parser = argparse.ArgumentParser(description='Converts GAL16V8 JEDEC to hex')
parser.add_argument('-i', dest='in_file', required=True)
parser.add_argument('-o', dest='out_file', required=True)
args = parser.parse_args()

with open(args.in_file, 'r') as f_in, open(args.out_file, 'w+') as f_out:
    f_out.write('v2.0 raw\n')

    p_addr = 0
    data_len = 0
    fuses_bin = bitarray()
    for line in f_in:
        fuses_match = FUSES_PATTERN.match(line)
        if fuses_match:
            addr, data = fuses_match.groups()
            c_addr = int(addr)

            d_addr = c_addr - p_addr - data_len
            p_addr = c_addr
            data_len = len(data)   

            # empty fuse address
            if d_addr > 0:
                fuses_bin += d_addr * bitarray('1')

            fuses_bin += bitarray(data)

    # ignore PE & SIG
    del fuses_bin[PE[0]:PE[1]+1]
    del fuses_bin[SIG[0]:SIG[1]+1]

    # 32 bit padding
    padding = 32 - len(fuses_bin) % 32
    fuses_bin += padding * bitarray('1')
    fuses_hex = ba2hex(fuses_bin)

    # write 8 hex per line
    for i in range(0, len(fuses_hex), 8):
        f_out.write(fuses_hex[i:i+8] + '\n')