109 lines
2.3 KiB
C
109 lines
2.3 KiB
C
/*
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* of_dump.c - dump devicetrees to the console
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*
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* Copyright (c) 2014 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <common.h>
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#include <fdt.h>
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#include <of.h>
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#include <command.h>
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#include <fs.h>
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#include <malloc.h>
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#include <complete.h>
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#include <linux/ctype.h>
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#include <asm/byteorder.h>
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#include <errno.h>
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#include <getopt.h>
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#include <linux/err.h>
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static int do_of_dump(int argc, char *argv[])
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{
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int opt;
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int ret;
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struct device_node *root = NULL, *node, *of_free = NULL;
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char *dtbfile = NULL;
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size_t size;
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const char *nodename;
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while ((opt = getopt(argc, argv, "f:")) > 0) {
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switch (opt) {
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case 'f':
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dtbfile = optarg;
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break;
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default:
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return COMMAND_ERROR_USAGE;
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}
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}
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if (optind == argc)
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nodename = "/";
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else
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nodename = argv[optind];
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if (dtbfile) {
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void *fdt;
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fdt = read_file(dtbfile, &size);
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if (!fdt) {
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printf("unable to read %s: %s\n", dtbfile, strerror(errno));
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return -errno;
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}
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root = of_unflatten_dtb(fdt);
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free(fdt);
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if (IS_ERR(root)) {
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ret = PTR_ERR(root);
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goto out;
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}
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of_free = root;
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} else {
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root = of_get_root_node();
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}
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node = of_find_node_by_path_or_alias(root, nodename);
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if (!node) {
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printf("Cannot find nodepath %s\n", nodename);
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ret = -ENOENT;
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goto out;
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}
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of_print_nodes(node, 0);
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out:
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if (of_free)
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of_delete_node(of_free);
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return 0;
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}
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BAREBOX_CMD_HELP_START(of_dump)
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BAREBOX_CMD_HELP_TEXT("Options:")
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BAREBOX_CMD_HELP_OPT ("-f dtb", "work on dtb instead of internal devicetree\n")
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BAREBOX_CMD_HELP_END
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BAREBOX_CMD_START(of_dump)
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.cmd = do_of_dump,
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BAREBOX_CMD_DESC("dump devicetree nodes")
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BAREBOX_CMD_OPTS("[-f]")
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BAREBOX_CMD_GROUP(CMD_GRP_MISC)
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BAREBOX_CMD_COMPLETE(devicetree_file_complete)
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BAREBOX_CMD_HELP(cmd_of_dump_help)
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BAREBOX_CMD_END
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