Introduce a DT-based manifest
These are first steps towards a new manifest format. A new "device_tree"
build target is introduced to compile DTS files to DTB, and
`generate_initrd.py` now does not produce a "vms.txt" file. Instead
"initrd" targets are expected to provide a path to a DTS manifest in the
format:
/dts-v1/;
/ {
hypervisor {
vm1 {
debug_name = "primary";
};
vm2 {
debug_name = "secondary1";
kernel_filename = "filename";
vcpu_count = <N>;
mem_size = <M>;
};
...
};
};
The information provided in the manifest matches "vms.txt".
Bug: 117551352
Test: manifest_test.cc
Test: used by hftest
Change-Id: I6b70bd44d2b110c4f7a6b971018c834084b6d8c4
diff --git a/build/image/dtc.py b/build/image/dtc.py
new file mode 100644
index 0000000..49eeeb7
--- /dev/null
+++ b/build/image/dtc.py
@@ -0,0 +1,41 @@
+#!/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.
+
+"""Wrapper around Device Tree Compiler (dtc)"""
+
+import argparse
+import os
+import subprocess
+import sys
+
+DTC = "dtc"
+
+def main():
+ parser = argparse.ArgumentParser()
+ parser.add_argument("input_file")
+ parser.add_argument("output_file")
+ args = parser.parse_args()
+
+ return subprocess.call([
+ DTC,
+ "-I", "dts", "-O", "dtb",
+ "-o", args.output_file,
+ "--out-version", "17",
+ args.input_file
+ ])
+
+if __name__ == "__main__":
+ sys.exit(main())