#!/usr/bin/env python2 # devicetree_convert Tool to convert a DTB to a static C file # Copyright (C) 2018 Facebook Inc. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # from pyfdt.pyfdt import FdtBlobParse import argparse parser = argparse.ArgumentParser(description='Cavium DTB to C converter') parser.add_argument('--indtb', help='Compiled devicetree blob to parse') parser.add_argument('--out', help='The file to write') parser.add_argument('--verbose', help='Be verbose', action='store_true', default=False) args = parser.parse_args() outfile = None if args.out is not None: outfile = open(args.out, 'w') outfile.write("// This file is part of the coreboot project.\n") outfile.write("// This file is automatically generated.\n") outfile.write("// DO NOT EDIT BY HAND.\n\n") outfile.write("#include <bdk-devicetree.h>\n\n") outfile.write("const struct bdk_devicetree_key_value devtree[] = {\n") with open(args.indtb) as infile: dtb = FdtBlobParse(infile) fdt = dtb.to_fdt() for (path, node) in fdt.resolve_path('/cavium,bdk').walk(): if "/" in path: path = path.replace("/", "") if len(node) == 1: for i in node: if type(i) is not unicode: print "%s: Type is not string" % path continue if args.verbose: print "%s = %s" % (path, i) if outfile is not None: outfile.write("{\"%s\", \"%s\"},\n" % (path, i)) else: print "%s: Arrays aren't supported" % path if outfile is not None: outfile.write("{0, 0},\n") outfile.write("};\n")