1#!/usr/bin/python 2# 3# Copyright (C) 2016 Google, Inc 4# Written by Simon Glass <sjg@chromium.org> 5# 6# SPDX-License-Identifier: GPL-2.0+ 7# 8 9"""Device tree to C tool 10 11This tool converts a device tree binary file (.dtb) into two C files. The 12indent is to allow a C program to access data from the device tree without 13having to link against libfdt. By putting the data from the device tree into 14C structures, normal C code can be used. This helps to reduce the size of the 15compiled program. 16 17Dtoc produces two output files: 18 19 dt-structs.h - contains struct definitions 20 dt-platdata.c - contains data from the device tree using the struct 21 definitions, as well as U-Boot driver definitions. 22 23This tool is used in U-Boot to provide device tree data to SPL without 24increasing the code size of SPL. This supports the CONFIG_SPL_OF_PLATDATA 25options. For more information about the use of this options and tool please 26see doc/driver-model/of-plat.txt 27""" 28 29from optparse import OptionParser 30import os 31import sys 32 33# Bring in the patman libraries 34our_path = os.path.dirname(os.path.realpath(__file__)) 35sys.path.append(os.path.join(our_path, '../patman')) 36 37import dtb_platdata 38 39 40if __name__ != "__main__": 41 pass 42 43parser = OptionParser() 44parser.add_option('-d', '--dtb-file', action='store', 45 help='Specify the .dtb input file') 46parser.add_option('--include-disabled', action='store_true', 47 help='Include disabled nodes') 48parser.add_option('-o', '--output', action='store', default='-', 49 help='Select output filename') 50(options, args) = parser.parse_args() 51 52dtb_platdata.run_steps(args, options.dtb_file, options.include_disabled, 53 options.output) 54