116 lines
4.3 KiB
Python
Executable File
116 lines
4.3 KiB
Python
Executable File
#!/usr/bin/env python3
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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 several output files - see OUTPUT_FILES in dtb_platdata.py
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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.rst
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"""
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from argparse import ArgumentParser
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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, '..'))
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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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from dtoc import dtb_platdata
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from patman import test_util
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def run_tests(processes, args):
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"""Run all the test we have for dtoc
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Args:
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processes: Number of processes to use to run tests (None=same as #CPUs)
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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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from dtoc import test_src_scan
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from dtoc 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.files and args.files[0] or None
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test_dtoc.setup()
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test_util.RunTestSuites(
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result, debug=True, verbosity=1, test_preserve_dirs=False,
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processes=processes, test_name=test_name, toolpath=[],
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test_class_list=[test_dtoc.TestDtoc,test_src_scan.TestSrcScan])
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return test_util.ReportResult('binman', test_name, result)
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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', '/main.py',
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['tools/patman/*.py', '*/fdt*', '*test*'], args.build_dir)
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if __name__ != '__main__':
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sys.exit(1)
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epilog = '''Generate C code from devicetree files. See of-plat.rst for details'''
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parser = ArgumentParser(epilog=epilog)
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parser.add_argument('-B', '--build-dir', type=str, default='b',
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help='Directory containing the build output')
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parser.add_argument('-c', '--c-output-dir', action='store',
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help='Select output directory for C files')
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parser.add_argument('-C', '--h-output-dir', action='store',
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help='Select output directory for H files (defaults to --c-output-di)')
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parser.add_argument('-d', '--dtb-file', action='store',
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help='Specify the .dtb input file')
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parser.add_argument('-i', '--instantiate', action='store_true', default=False,
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help='Instantiate devices to avoid needing device_bind()')
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parser.add_argument('--include-disabled', action='store_true',
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help='Include disabled nodes')
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parser.add_argument('-o', '--output', action='store',
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help='Select output filename')
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parser.add_argument('-p', '--phase', type=str,
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help='set phase of U-Boot this invocation is for (spl/tpl)')
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parser.add_argument('-P', '--processes', type=int,
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help='set number of processes to use for running tests')
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parser.add_argument('-t', '--test', action='store_true', dest='test',
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default=False, help='run tests')
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parser.add_argument('-T', '--test-coverage', action='store_true',
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default=False, help='run tests and check for 100%% coverage')
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parser.add_argument('files', nargs='*')
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args = parser.parse_args()
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# Run our meagre tests
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if args.test:
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ret_code = run_tests(args.processes, args)
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sys.exit(ret_code)
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elif args.test_coverage:
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RunTestCoverage()
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else:
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dtb_platdata.run_steps(args.files, args.dtb_file, args.include_disabled,
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args.output,
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[args.c_output_dir, args.h_output_dir],
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args.phase, instantiate=args.instantiate)
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