Init

tools/lofi_unpack.py

@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+"""Unpack Lofi-12 XT .bin -> directory with headers.json + sect payloads."""
+import argparse, json, os, struct, sys
+sys.path.insert(0, os.path.dirname(__file__))
+from lofi_image import parse_image, headers_to_json
+
+def main():
+    ap = argparse.ArgumentParser()
+    ap.add_argument('image')
+    ap.add_argument('outdir')
+    a = ap.parse_args()
+    d = open(a.image, 'rb').read()
+    info = parse_image(d)
+    os.makedirs(a.outdir, exist_ok=True)
+    open(os.path.join(a.outdir, 'headers.json'), 'w').write(
+        json.dumps(headers_to_json(info), indent=2))
+    for s in info['sects']:
+        fn = f"sect{s['index']}_addr{s['addr']:08X}.bin"
+        open(os.path.join(a.outdir, fn), 'wb').write(s['payload'])
+    m = info['mmtd']
+    print(f"fw {tuple(m['fw'])} entry={m['entry']:08X} nsect={m['nsect']} "
+          f"cksum={info['cmtd']['checksum']:08X} size={len(d)}")
+    for s in info['sects']:
+        print(f"  sect{s['index']} off={s['off']:06X} addr={s['addr']:08X} "
+              f"len={s['len']} end={s['end']:08X}")
+    print(f"wrote {a.outdir}/")
+
+if __name__ == '__main__':
+    main()