109 lines
3.6 KiB
Python
109 lines
3.6 KiB
Python
#!/usr/bin/env python2
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# SPDX-License-Identifier: GPL-2.0+
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#
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# Copyright (C) 2016 Google, Inc
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# Written by Simon Glass <sjg@chromium.org>
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#
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"""Device tree to C tool
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This tool converts a device tree binary file (.dtb) into two C files. The
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indent is to allow a C program to access data from the device tree without
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having to link against libfdt. By putting the data from the device tree into
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C structures, normal C code can be used. This helps to reduce the size of the
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compiled program.
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Dtoc produces two output files:
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dt-structs.h - contains struct definitions
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dt-platdata.c - contains data from the device tree using the struct
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definitions, as well as U-Boot driver definitions.
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This tool is used in U-Boot to provide device tree data to SPL without
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increasing the code size of SPL. This supports the CONFIG_SPL_OF_PLATDATA
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options. For more information about the use of this options and tool please
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see doc/driver-model/of-plat.txt
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"""
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from optparse import OptionParser
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import os
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import sys
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import unittest
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# Bring in the patman libraries
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our_path = os.path.dirname(os.path.realpath(__file__))
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sys.path.append(os.path.join(our_path, '../patman'))
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# Bring in the libfdt module
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sys.path.insert(0, 'scripts/dtc/pylibfdt')
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sys.path.insert(0, os.path.join(our_path,
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'../../build-sandbox_spl/scripts/dtc/pylibfdt'))
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import dtb_platdata
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import test_util
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def run_tests(args):
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"""Run all the test we have for dtoc
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Args:
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args: List of positional args provided to dtoc. This can hold a test
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name to execute (as in 'dtoc -t test_empty_file', for example)
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"""
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import test_dtoc
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result = unittest.TestResult()
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sys.argv = [sys.argv[0]]
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test_name = args and args[0] or None
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for module in (test_dtoc.TestDtoc,):
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if test_name:
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try:
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suite = unittest.TestLoader().loadTestsFromName(test_name, module)
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except AttributeError:
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continue
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else:
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suite = unittest.TestLoader().loadTestsFromTestCase(module)
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suite.run(result)
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print result
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for _, err in result.errors:
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print err
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for _, err in result.failures:
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print err
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def RunTestCoverage():
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"""Run the tests and check that we get 100% coverage"""
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sys.argv = [sys.argv[0]]
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test_util.RunTestCoverage('tools/dtoc/dtoc.py', '/dtoc.py',
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['tools/patman/*.py', '*/fdt*', '*test*'], options.build_dir)
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if __name__ != '__main__':
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sys.exit(1)
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parser = OptionParser()
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parser.add_option('-B', '--build-dir', type='string', default='b',
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help='Directory containing the build output')
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parser.add_option('-d', '--dtb-file', action='store',
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help='Specify the .dtb input file')
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parser.add_option('--include-disabled', action='store_true',
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help='Include disabled nodes')
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parser.add_option('-o', '--output', action='store', default='-',
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help='Select output filename')
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parser.add_option('-P', '--processes', type=int,
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help='set number of processes to use for running tests')
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parser.add_option('-t', '--test', action='store_true', dest='test',
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default=False, help='run tests')
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parser.add_option('-T', '--test-coverage', action='store_true',
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default=False, help='run tests and check for 100% coverage')
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(options, args) = parser.parse_args()
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# Run our meagre tests
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if options.test:
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run_tests(args)
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elif options.test_coverage:
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RunTestCoverage()
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else:
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dtb_platdata.run_steps(args, options.dtb_file, options.include_disabled,
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options.output)
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