vial: add support for vibl bootloader and vfw package creation

util/vial_generate_vfw.py

@@ -0,0 +1,49 @@
+import sys
+import re
+import struct
+import hashlib
+import time
+
+
+def main():
+    inp = sys.argv[1]
+    out = sys.argv[2]
+    configs = sys.argv[3:]
+
+    # identify keyboard UID
+    uid = None
+    for config in configs:
+        with open(config, "r") as inf:
+            for line in inf:
+                uid = re.findall(r"#define.*VIAL_KEYBOARD_UID.*{(.*)}", line)
+                if uid:
+                    break
+    if not uid:
+        print("Cannot identify keyboard UID from configuration files {}, ensure that you have VIAL_KEYBOARD_UID defined!".format(configs))
+        return 1
+
+    uid = uid[0].split(",")
+    uid = [int(x, 16) for x in uid]
+    uid = struct.pack("BBBBBBBB", *uid)
+
+    # read firmware binary
+    with open(sys.argv[1], "rb") as inf:
+        firmware = inf.read()
+
+    with open(out, "wb") as outf:
+        outf.write(b"VIALFW00")
+        outf.write(uid)
+        outf.write(struct.pack("<Q", int(time.time())))
+        outf.write(b"\x00" * 8)
+        outf.write(hashlib.sha256(firmware).digest())
+        outf.write(firmware)
+
+    print("-" * 80)
+    print("Vial update package created at {}".format(out))
+    print("-" * 80)
+
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())