Diff: tools/offset_update.py

Revision:

0:01f31e923fe2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/offset_update.py	Tue Apr 07 12:55:42 2020 +0200
@@ -0,0 +1,61 @@
+#
+# DAPLink Interface Firmware
+# Copyright (c) 2009-2016, ARM Limited, All Rights Reserved
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+from __future__ import absolute_import
+
+from builtins import bytes
+
+import argparse
+
+
+def dec_or_hex(val):
+    return int(val, 0)
+
+
+def create_padded_image(input_file, output_file, start,
+                        pad_start, copy_size):
+    pad_size = start - pad_start
+    with open(input_file, 'rb') as file_handle:
+        data = file_handle.read()
+    output_data = data[0:copy_size] + bytes([0xff] * (pad_size - copy_size)) + data
+    with open(output_file, 'wb') as file_handle:
+        data = file_handle.write(output_data)
+
+
+def main():
+    parser = argparse.ArgumentParser(description='File Padder')
+    parser.add_argument("bin", type=str, default=None,
+                        help="Input binary file")
+    parser.add_argument("--start", type=dec_or_hex, default=0x8000,
+                        help="Starting address of input binary file")
+    parser.add_argument("--padded_start", type=dec_or_hex, default=0x5000,
+                        help="Starting address after padding.")
+    parser.add_argument("--output", type=str, required=True,
+                        help="Output file")
+    parser.add_argument("--copysize", type=str, default=0x40,
+                        help="Size of original binary to copy")
+    args = parser.parse_args()
+
+    # Data is appened to front so padded start must be less than start
+    assert args.start > args.padded_start
+    create_padded_image(args.bin, args.output, args.start,
+                        args.padded_start, args.copysize)
+
+
+if __name__ == "__main__":
+    main()