Infrastructure for running tests under Linux in primary VM.
Includes an initial test of simply inserting and removing the Hafnium
kernel module.
Change-Id: I832a30d902f58ca71f89374300ab39b2ba3ab877
diff --git a/build/image/generate_linux_initrd.py b/build/image/generate_linux_initrd.py
new file mode 100644
index 0000000..06f6502
--- /dev/null
+++ b/build/image/generate_linux_initrd.py
@@ -0,0 +1,47 @@
+#!/usr/bin/env python
+#
+# Copyright 2019 The Hafnium Authors.
+#
+# 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
+#
+# https://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.
+
+"""Generate an initial RAM disk for a Linux VM."""
+
+import argparse
+import os
+import shutil
+import subprocess
+import sys
+
+def Main():
+ parser = argparse.ArgumentParser()
+ parser.add_argument("--staging", required=True)
+ parser.add_argument("--output", required=True)
+ args = parser.parse_args()
+ # Package files into an initial RAM disk.
+ with open(args.output, "w") as initrd:
+ # Move into the staging directory so the file names taken by cpio don't
+ # include the path.
+ os.chdir(args.staging)
+ staged_files = [os.path.join(root, filename)
+ for (root, dirs, files) in os.walk(".") for filename in files + dirs]
+ cpio = subprocess.Popen(
+ ["cpio", "--create", "--format=newc"],
+ stdin=subprocess.PIPE,
+ stdout=initrd,
+ stderr=subprocess.PIPE)
+ cpio.communicate(input="\n".join(staged_files).encode("utf-8"))
+ return 0
+
+
+if __name__ == "__main__":
+ sys.exit(Main())