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