[build] add cvitek build scripts

Change-Id: If63ce4a669e5d4d72b8e3b9253336dd99bf74c30

build/scripts/pad_atf_crc.py

@@ -0,0 +1,57 @@
+#!/usr/bin/env python3
+# PYTHON_ARGCOMPLETE_OK
+
+import logging
+import argparse
+import binascii
+from struct import pack
+
+import build_helper
+
+try:
+    import argcomplete
+except ImportError:
+    argcomplete = None
+
+
+build_helper.check_python_min_version()
+
+
+def parse_args():
+    parser = argparse.ArgumentParser(description="Pad ATF CRC")
+    parser.add_argument("-v", "--verbose", default="INFO")
+    parser.add_argument("--logfile", type=str)
+    parser.add_argument("--pad-crc", type=str)
+
+    if argcomplete:
+        argcomplete.autocomplete(parser)
+
+    return parser.parse_args()
+
+
+def pad_crc(path):
+    logging.info("Pad CRC16 to %s", path)
+    with open(path, "rb") as fp:
+        din = fp.read()
+    c = binascii.crc_hqx(din, 0)
+    logging.info("CRC16=0x%04x", c)
+
+    dout = din + pack("<H", c) + b"\xFE\xCA"
+    with open(path, "wb") as fp:
+        fp.write(dout)
+
+
+def main():
+    args = parse_args()
+
+    build_helper.init_logging(args.logfile, stdout_level=args.verbose)
+    build_helper.dump_debug_info()
+
+    if args.pad_crc:
+        pad_crc(args.pad_crc)
+
+    logging.info("END")
+
+
+if __name__ == "__main__":
+    main()