2be282ca01
Unfortunately I neglected to run pylint on this tool with its initial submission. Fix the warnings. Signed-off-by: Simon Glass <sjg@chromium.org>
68 lines
2.1 KiB
Python
Executable file
68 lines
2.1 KiB
Python
Executable file
#!/usr/bin/python
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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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# SPDX-License-Identifier: GPL-2.0+
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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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# 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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import dtb_platdata
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if __name__ != "__main__":
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pass
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parser = OptionParser()
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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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(options, args) = parser.parse_args()
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if not args:
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raise ValueError('Please specify a command: struct, platdata')
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plat = dtb_platdata.DtbPlatdata(options.dtb_file, options)
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plat.scan_dtb()
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plat.scan_tree()
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plat.setup_output(options.output)
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structs = plat.scan_structs()
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plat.scan_phandles()
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for cmd in args[0].split(','):
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if cmd == 'struct':
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plat.generate_structs(structs)
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elif cmd == 'platdata':
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plat.generate_tables()
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else:
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raise ValueError("Unknown command '%s': (use: struct, platdata)" % cmd)
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