Decouple filepaths from rcS/MTD

Tools/filepaths/generate_config.py

@@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+""" Script to generate Serial rc.filepaths for the ROMFS startup script """
+
+import argparse
+import os
+import sys
+
+try:
+    from jinja2 import Environment, FileSystemLoader
+except ImportError as e:
+    print("Failed to import jinja2: " + str(e))
+    print("")
+    print("You may need to install it using:")
+    print("    pip3 install --user jinja2")
+    print("")
+    sys.exit(1)
+
+try:
+    import yaml
+except ImportError as e:
+    print("Failed to import yaml: " + str(e))
+    print("")
+    print("You may need to install it using:")
+    print("    pip3 install --user pyyaml")
+    print("")
+    sys.exit(1)
+
+parser = argparse.ArgumentParser(description='Generate PX4 ROMFS filepaths')
+
+parser.add_argument('--config-files', type=str, nargs='*', default=[],
+                    help='YAML module config file(s)')
+parser.add_argument('--constrained-flash', action='store_true',
+                    help='Reduce verbosity in ROMFS scripts to reduce flash size')
+parser.add_argument('--rc-dir', type=str, action='store',
+                    help='ROMFS output directory', default=None)
+parser.add_argument('--params-file', type=str, action='store',
+                    help='Parameter output file', default=None)
+parser.add_argument('-v', '--verbose', dest='verbose', action='store_true',
+                    help='Verbose Output')
+
+args = parser.parse_args()
+
+verbose = args.verbose
+constrained_flash = args.constrained_flash
+rc_filepaths_output_dir = args.rc_dir
+rc_filepaths_template = 'rc.filepaths.jinja'
+
+
+jinja_env = Environment(loader=FileSystemLoader(
+    os.path.dirname(os.path.realpath(__file__))))
+
+# generate the ROMFS script using a jinja template
+if rc_filepaths_output_dir is not None:
+    rc_filepath_output_file = os.path.join(rc_filepaths_output_dir, "rc.filepaths")
+
+    if verbose: print("Generating {:}".format(rc_filepath_output_file))
+    template = jinja_env.get_template(rc_filepaths_template)
+    with open(rc_filepath_output_file, 'w') as fid:
+        fid.write(template.render(constrained_flash=constrained_flash, params_file=args.params_file))
+else:
+    raise Exception("--rc-dir needs to be specified")

Tools/filepaths/rc.filepaths.jinja

@@ -0,0 +1,6 @@
+{# jinja template to generate the serial autostart script. #}
+
+# serial autostart script generated with generate_serial_config.py
+
+
+set PARAM_FILE {{ params_file }}