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wasp-os/tools/hex2c.py

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#!/usr/bin/env python3
# SPDX-License-Identifier: LGPL-3.0-or-later
# Copyright (C) 2020 Daniel Thompson
import binascii
import intelhex
import sys
def generate_c(ihex):
print('/* this file is auto-generated - DO NOT EDIT */')
print()
print('#include <stdint.h>')
print()
print('struct segment {')
print(' uint32_t start;');
print(' uint32_t end;');
print(' uint32_t crc32;')
print(' const uint8_t *data;')
print('};')
print()
segments = []
chunk = 32 * 1024
for (start, end) in ihex.segments():
while start + chunk < end:
segments.append((start, start + chunk))
start += chunk
if start < end:
segments.append((start, end))
for i, segment in enumerate(segments):
print(f'static const uint8_t segment{i}[] = {{', end='')
for j in range(segment[0], segment[1]):
if 0 == j % 12:
print('\n ', end='')
print(f' 0x{ihex[j]:02x},', end='')
print('\n};\n')
print(f'const struct segment segments[] = {{')
for i, segment in enumerate(segments):
sg = ihex.tobinarray(start=segment[0], end=segment[1]-1)
crc = binascii.crc32(sg)
print(f' 0x{segment[0]:08x}, 0x{segment[1]:08x}, 0x{crc:08x}, segment{i},')
print('};')
ihex = intelhex.IntelHex()
ihex.loadhex(sys.argv[1])
generate_c(ihex)