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/*
* of_dump.c - dump devicetrees to the console
*
* Copyright (c) 2014 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* 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.
*
*/
#include <common.h>
#include <libfile.h>
#include <fdt.h>
#include <of.h>
#include <command.h>
#include <fs.h>
#include <malloc.h>
#include <complete.h>
#include <linux/ctype.h>
#include <asm/byteorder.h>
#include <errno.h>
#include <getopt.h>
#include <linux/err.h>
static int do_of_dump(int argc, char *argv[])
{
int opt;
int ret;
struct device_node *root = NULL, *node, *of_free = NULL;
char *dtbfile = NULL;
size_t size;
const char *nodename;
while ((opt = getopt(argc, argv, "f:")) > 0) {
switch (opt) {
case 'f':
dtbfile = optarg;
break;
default:
return COMMAND_ERROR_USAGE;
}
}
if (optind == argc)
nodename = "/";
else
nodename = argv[optind];
if (dtbfile) {
void *fdt;
fdt = read_file(dtbfile, &size);
if (!fdt) {
printf("unable to read %s: %s\n", dtbfile, strerror(errno));
return -errno;
}
root = of_unflatten_dtb(fdt);
free(fdt);
if (IS_ERR(root)) {
ret = PTR_ERR(root);
goto out;
}
of_free = root;
} else {
root = of_get_root_node();
}
node = of_find_node_by_path_or_alias(root, nodename);
if (!node) {
printf("Cannot find nodepath %s\n", nodename);
ret = -ENOENT;
goto out;
}
of_print_nodes(node, 0);
out:
if (of_free)
of_delete_node(of_free);
return 0;
}
BAREBOX_CMD_HELP_START(of_dump)
BAREBOX_CMD_HELP_TEXT("Options:")
BAREBOX_CMD_HELP_OPT ("-f dtb", "work on dtb instead of internal devicetree\n")
BAREBOX_CMD_HELP_END
BAREBOX_CMD_START(of_dump)
.cmd = do_of_dump,
BAREBOX_CMD_DESC("dump devicetree nodes")
BAREBOX_CMD_OPTS("[-f] [NODE]")
BAREBOX_CMD_GROUP(CMD_GRP_MISC)
BAREBOX_CMD_COMPLETE(devicetree_file_complete)
BAREBOX_CMD_HELP(cmd_of_dump_help)
BAREBOX_CMD_END
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