1#!/usr/bin/env python3
2# SPDX-License-Identifier: GPL-2.0+
3#
4# Copyright (C) 2016 Google, Inc
5# Written by Simon Glass <sjg@chromium.org>
6#
7
8"""Device tree to C tool
9
10This tool converts a device tree binary file (.dtb) into two C files. The
11indent is to allow a C program to access data from the device tree without
12having to link against libfdt. By putting the data from the device tree into
13C structures, normal C code can be used. This helps to reduce the size of the
14compiled program.
15
16Dtoc produces several output files - see OUTPUT_FILES in dtb_platdata.py
17
18This tool is used in U-Boot to provide device tree data to SPL without
19increasing the code size of SPL. This supports the CONFIG_SPL_OF_PLATDATA
20options. For more information about the use of this options and tool please
21see doc/driver-model/of-plat.rst
22"""
23
24from optparse import OptionParser
25import os
26import sys
27import unittest
28
29# Bring in the patman libraries
30our_path = os.path.dirname(os.path.realpath(__file__))
31sys.path.append(os.path.join(our_path, '..'))
32
33# Bring in the libfdt module
34sys.path.insert(0, 'scripts/dtc/pylibfdt')
35sys.path.insert(0, os.path.join(our_path,
36                '../../build-sandbox_spl/scripts/dtc/pylibfdt'))
37
38from dtoc import dtb_platdata
39from patman import test_util
40
41def run_tests(processes, args):
42    """Run all the test we have for dtoc
43
44    Args:
45        processes: Number of processes to use to run tests (None=same as #CPUs)
46        args: List of positional args provided to dtoc. This can hold a test
47            name to execute (as in 'dtoc -t test_empty_file', for example)
48    """
49    from dtoc import test_src_scan
50    from dtoc import test_dtoc
51
52    result = unittest.TestResult()
53    sys.argv = [sys.argv[0]]
54    test_name = args and args[0] or None
55
56    test_util.RunTestSuites(
57        result, debug=True, verbosity=1, test_preserve_dirs=False,
58        processes=processes, test_name=test_name, toolpath=[],
59        test_class_list=[test_dtoc.TestDtoc,test_src_scan.TestSrcScan])
60
61    return test_util.ReportResult('binman', test_name, result)
62
63def RunTestCoverage():
64    """Run the tests and check that we get 100% coverage"""
65    sys.argv = [sys.argv[0]]
66    test_util.RunTestCoverage('tools/dtoc/dtoc', '/main.py',
67            ['tools/patman/*.py', '*/fdt*', '*test*'], options.build_dir)
68
69
70if __name__ != '__main__':
71    sys.exit(1)
72
73parser = OptionParser()
74parser.add_option('-B', '--build-dir', type='string', default='b',
75        help='Directory containing the build output')
76parser.add_option('-c', '--c-output-dir', action='store',
77                  help='Select output directory for C files')
78parser.add_option('-C', '--h-output-dir', action='store',
79                  help='Select output directory for H files (defaults to --c-output-di)')
80parser.add_option('-d', '--dtb-file', action='store',
81                  help='Specify the .dtb input file')
82parser.add_option('--include-disabled', action='store_true',
83                  help='Include disabled nodes')
84parser.add_option('-o', '--output', action='store',
85                  help='Select output filename')
86parser.add_option('-P', '--processes', type=int,
87                  help='set number of processes to use for running tests')
88parser.add_option('-t', '--test', action='store_true', dest='test',
89                  default=False, help='run tests')
90parser.add_option('-T', '--test-coverage', action='store_true',
91                default=False, help='run tests and check for 100% coverage')
92(options, args) = parser.parse_args()
93
94# Run our meagre tests
95if options.test:
96    ret_code = run_tests(options.processes, args)
97    sys.exit(ret_code)
98
99elif options.test_coverage:
100    RunTestCoverage()
101
102else:
103    dtb_platdata.run_steps(args, options.dtb_file, options.include_disabled,
104                           options.output,
105                           [options.c_output_dir, options.h_output_dir])
106