Initial version of packaging script

* based on Python, Vivado IP Integrator
* produces component.xml with correct reset polarity

package.py

+#!/usr/bin/python
+
+import json
+import argparse
+from subprocess import Popen, STDOUT, PIPE
+
+script = '''
+create_project -force "{0}" /tmp
+ipx::infer_core -name "{0}" -vendor "{1}" -library "{2}" -version "{3}" "{4}"
+set_property supported_families {{virtex7 Production qvirtex7 Production kintex7 Production kintex7l Production qkintex7 Production qkintex7l Production artix7 Production artix7l Production aartix7 Production qartix7 Production zynq Production qzynq Production azynq Production}} [ipx::current_core]
+set_property core_revision 1 [ipx::current_core]
+set_property display_name "{0}" [ipx::current_core]
+set_property description "{0}" [ipx::current_core]
+set_property taxonomy "{2}" [ipx::current_core]
+ipx::add_bus_parameter POLARITY [ipx::get_bus_interfaces reset -of_objects [ipx::current_core]]
+set_property value ACTIVE_HIGH [ipx::get_bus_parameters POLARITY -of_objects [ipx::get_bus_interfaces reset -of_objects [ipx::current_core]]]
+ipx::update_checksums [ipx::current_core]
+ipx::save_core [ipx::current_core]
+close_project -delete
+'''
+
+def read_json(jsonfile):
+	with open(jsonfile, 'r') as jf:
+		contents = jf.read()
+		return json.loads(contents)
+
+def make_vivado_script(jsonfile):
+	cd = read_json(jsonfile)
+	return script.format(cd['name'], cd['vendor'], cd['library'], cd['version'], cd['root'])
+
+def run_vivado(script):
+	p = Popen(['vivado', '-mode', 'tcl', '-nolog', '-nojournal'], stdin=PIPE, stdout=PIPE, stderr=STDOUT)
+	output = p.communicate(input = script)[0]
+	print output.decode() 
+
+def parse_args:
+	parser = argparse.ArgumentParser(description = 'Package a hardware module specified by JSON as IP-XACT.')
+	parser.add_argument('json', help = 'path to JSON file')
+	return parser.parse_args()
+
+args = parse_args
+run_vivado(make_vivado_script(args.json))