dtoc: Convert to use ArgumentParser

Use this parser instead of OptionParser, which is deprecated.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Walter Lozano <walter.lozano@collabora.com>

tools/dtoc/main.py

@@ -21,7 +21,7 @@ options. For more information about the use of this options and tool please
 see doc/driver-model/of-plat.rst
 """
 
-from optparse import OptionParser
+from argparse import ArgumentParser
 import os
 import sys
 import unittest
@@ -51,7 +51,7 @@ def run_tests(processes, args):
 
     result = unittest.TestResult()
     sys.argv = [sys.argv[0]]
-    test_name = args and args[0] or None
+    test_name = args.files and args.files[0] or None
 
     test_dtoc.setup()
 
@@ -66,47 +66,50 @@ def RunTestCoverage():
     """Run the tests and check that we get 100% coverage"""
     sys.argv = [sys.argv[0]]
     test_util.RunTestCoverage('tools/dtoc/dtoc', '/main.py',
-            ['tools/patman/*.py', '*/fdt*', '*test*'], options.build_dir)
+            ['tools/patman/*.py', '*/fdt*', '*test*'], args.build_dir)
 
 
 if __name__ != '__main__':
     sys.exit(1)
 
-parser = OptionParser()
-parser.add_option('-B', '--build-dir', type='string', default='b',
+epilog = '''Generate C code from devicetree files. See of-plat.rst for details'''
+
+parser = ArgumentParser(epilog=epilog)
+parser.add_argument('-B', '--build-dir', type=str, default='b',
         help='Directory containing the build output')
-parser.add_option('-c', '--c-output-dir', action='store',
+parser.add_argument('-c', '--c-output-dir', action='store',
                   help='Select output directory for C files')
-parser.add_option('-C', '--h-output-dir', action='store',
+parser.add_argument('-C', '--h-output-dir', action='store',
                   help='Select output directory for H files (defaults to --c-output-di)')
-parser.add_option('-d', '--dtb-file', action='store',
+parser.add_argument('-d', '--dtb-file', action='store',
                   help='Specify the .dtb input file')
-parser.add_option('-i', '--instantiate', action='store_true', default=False,
+parser.add_argument('-i', '--instantiate', action='store_true', default=False,
                   help='Instantiate devices to avoid needing device_bind()')
-parser.add_option('--include-disabled', action='store_true',
+parser.add_argument('--include-disabled', action='store_true',
                   help='Include disabled nodes')
-parser.add_option('-o', '--output', action='store',
+parser.add_argument('-o', '--output', action='store',
                   help='Select output filename')
-parser.add_option('-p', '--phase', type=str,
+parser.add_argument('-p', '--phase', type=str,
                   help='set phase of U-Boot this invocation is for (spl/tpl)')
-parser.add_option('-P', '--processes', type=int,
+parser.add_argument('-P', '--processes', type=int,
                   help='set number of processes to use for running tests')
-parser.add_option('-t', '--test', action='store_true', dest='test',
+parser.add_argument('-t', '--test', action='store_true', dest='test',
                   default=False, help='run tests')
-parser.add_option('-T', '--test-coverage', action='store_true',
-                default=False, help='run tests and check for 100% coverage')
-(options, args) = parser.parse_args()
+parser.add_argument('-T', '--test-coverage', action='store_true',
+                default=False, help='run tests and check for 100%% coverage')
+parser.add_argument('files', nargs='*')
+args = parser.parse_args()
 
 # Run our meagre tests
-if options.test:
-    ret_code = run_tests(options.processes, args)
+if args.test:
+    ret_code = run_tests(args.processes, args)
     sys.exit(ret_code)
 
-elif options.test_coverage:
+elif args.test_coverage:
     RunTestCoverage()
 
 else:
-    dtb_platdata.run_steps(args, options.dtb_file, options.include_disabled,
-                           options.output,
-                           [options.c_output_dir, options.h_output_dir],
-                           options.phase, instantiate=options.instantiate)
+    dtb_platdata.run_steps(args.files, args.dtb_file, args.include_disabled,
+                           args.output,
+                           [args.c_output_dir, args.h_output_dir],
+                           args.phase, instantiate=args.instantiate)