1 files changed, 92 insertions, 0 deletions
diff --git a/download_dependencies.py b/download_dependencies.py
new file mode 100755
index 0000000..b22c63f
--- /dev/null
+++ b/download_dependencies.py
@@ -0,0 +1,92 @@
+#!/usr/bin/env python3
+
+#  Copyright (c) 2021 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.
+
+# The script does effectively the same as "git submodule update --init" command.
+
+import logging
+import os
+import sys
+import tarfile
+import tempfile
+from urllib.request import urlopen
+from zipfile import ZipFile
+
+logging.basicConfig(filename='download_dependencies.log', level=logging.DEBUG)
+logging.getLogger().addHandler(logging.StreamHandler(sys.stdout))
+
+tf = "https://github.com/tensorflow/tensorflow/archive/6cff09aee1f832d495b3cae40cab0de58155a0af.zip"
+cmsis = "https://github.com/ARM-software/CMSIS_5/archive/0d7e4fa7131241a17e23dfae18140e0b2e77728f.zip"
+ethos_u_core_sw = "https://git.mlplatform.org/ml/ethos-u/ethos-u-core-software.git/snapshot/ethos-u-core-software-7f3c1c92732b611a53968b14e70a2b116e43b980.tar.gz"
+ethos_u_core_driver = "https://git.mlplatform.org/ml/ethos-u/ethos-u-core-driver.git/snapshot/ethos-u-core-driver-effc7aa8b9272fb20cdd1a7d1097818af70acc93.tar.gz"
+
+
+def download(url_file: str, post_process=None):
+    with urlopen(url_file) as response, tempfile.NamedTemporaryFile() as temp:
+        logging.info(f"Downloading {url_file} ...")
+        temp.write(response.read())
+        temp.seek(0)
+        logging.info(f"Finished downloading {url_file}.")
+        if post_process:
+            post_process(temp)
+
+
+def unzip(file, to_path):
+    with ZipFile(file) as z:
+        for archive_path in z.infolist():
+            archive_path.filename = archive_path.filename[archive_path.filename.find("/") + 1:]
+            if archive_path.filename:
+                z.extract(archive_path, to_path)
+                target_path = os.path.join(to_path, archive_path.filename)
+                attr = archive_path.external_attr >> 16
+                if attr != 0:
+                    os.chmod(target_path, attr)
+
+
+def untar(file, to_path):
+    with tarfile.open(file) as z:
+        for archive_path in z.getmembers():
+            index = archive_path.name.find("/")
+            if index < 0:
+                continue
+            archive_path.name = archive_path.name[index + 1:]
+            if archive_path.name:
+                z.extract(archive_path, to_path)
+
+
+def main(dependencies_path: str):
+
+    download(cmsis,
+             lambda file: unzip(file.name,
+                                to_path=os.path.join(dependencies_path, "cmsis")))
+    download(ethos_u_core_sw,
+             lambda file: untar(file.name,
+                                to_path=os.path.join(dependencies_path, "core-software")))
+    download(ethos_u_core_driver,
+             lambda file: untar(file.name,
+                                to_path=os.path.join(dependencies_path, "core-driver")))
+    download(tf,
+             lambda file: unzip(file.name,
+                                to_path=os.path.join(dependencies_path, "tensorflow")))
+
+
+if __name__ == '__main__':
+    download_dir = os.path.abspath(os.path.join(os.path.dirname(os.path.abspath(__file__)), "dependencies"))
+
+    if os.path.isdir(download_dir):
+        logging.info(f'{download_dir} exists. Skipping download.')
+    else:
+        main(download_dir)