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https://github.com/AsahiLinux/u-boot
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b00f0066e5
U-Boot operates in several phases, typically TPL, SPL and U-Boot proper. The latter does not use dtoc. In some rare cases different drivers are used for two phases. For example, in TPL it may not be necessary to use the full PCI subsystem, so a simple driver can be used instead. This works in the build system simply by compiling in one driver or the other (e.g. PCI driver + uclass for SPL; simple_bus for TPL). But dtoc has no way of knowing which code is compiled in for which phase, since it does not inspect Makefiles or dependency graphs. So to make this work for dtoc, we need to be able to explicitly mark drivers with their phase. This is done by adding an empty macro to the driver. Add support for this in dtoc. Signed-off-by: Simon Glass <sjg@chromium.org>
110 lines
4 KiB
Python
Executable file
110 lines
4 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 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, '..'))
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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 and args[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*'], 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('-c', '--c-output-dir', action='store',
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help='Select output directory for C files')
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parser.add_option('-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_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',
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help='Select output filename')
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parser.add_option('-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_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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ret_code = run_tests(options.processes, args)
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sys.exit(ret_code)
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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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[options.c_output_dir, options.h_output_dir],
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phase=options.phase)
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