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// SPDX-License-Identifier: GPL-2.0-only
// SPDX-FileCopyrightText: © 2014 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
/* of_dump.c - dump devicetrees to the console */
#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 void of_print_nodenames(struct device_node *node)
{
struct device_node *n;
printf("%s\n", node->full_name);
list_for_each_entry(n, &node->children, parent_list) {
if (ctrlc())
return;
of_print_nodenames(n);
}
}
static int do_of_dump(int argc, char *argv[])
{
int opt;
int ret = 0;
int fix = 0;
struct device_node *root = NULL, *node, *of_free = NULL;
char *dtbfile = NULL;
const char *nodename;
unsigned maxpropsize = ~0;
int names_only = 0, properties_only = 0;
while ((opt = getopt(argc, argv, "Ff:npP:")) > 0) {
switch (opt) {
case 'f':
dtbfile = optarg;
break;
case 'F':
fix = 1;
break;
case 'n':
names_only = 1;
break;
case 'p':
properties_only = 1;
break;
case 'P':
ret = kstrtouint(optarg, 0, &maxpropsize);
if (ret)
return ret;
break;
default:
return COMMAND_ERROR_USAGE;
}
}
if (optind == argc)
nodename = "/";
else
nodename = argv[optind];
if (dtbfile) {
root = of_read_file(dtbfile);
if (IS_ERR(root)) {
printf("Cannot open %s: %pe\n", dtbfile, root);
ret = PTR_ERR(root);
goto out;
}
of_free = root;
} else {
root = of_get_root_node();
if (fix) {
/* create a copy of internal devicetree */
void *fdt;
fdt = of_flatten_dtb(root);
root = of_unflatten_dtb(fdt, fdt_totalsize(fdt));
free(fdt);
if (IS_ERR(root)) {
ret = PTR_ERR(root);
goto out;
}
of_free = root;
}
}
if (fix) {
ret = of_fix_tree(root);
if (ret)
goto out;
}
node = of_find_node_by_path_or_alias(root, nodename);
if (!node) {
printf("Cannot find nodepath %s\n", nodename);
ret = -ENOENT;
goto out;
}
if (names_only && !properties_only)
of_print_nodenames(node);
else if (properties_only && !names_only)
of_print_properties(node, maxpropsize);
else
of_print_nodes(node, 0, maxpropsize);
out:
if (of_free)
of_delete_node(of_free);
return ret;
}
BAREBOX_CMD_HELP_START(of_dump)
BAREBOX_CMD_HELP_TEXT("Options:")
BAREBOX_CMD_HELP_OPT ("-f dtb", "work on dtb instead of internal devicetree")
BAREBOX_CMD_HELP_OPT ("-F", "return fixed devicetree")
BAREBOX_CMD_HELP_OPT ("-n", "Print node names only, no properties")
BAREBOX_CMD_HELP_OPT ("-p", "Print properties only, no child nodes")
BAREBOX_CMD_HELP_OPT ("-P len", "print only len property bytes")
BAREBOX_CMD_HELP_END
BAREBOX_CMD_START(of_dump)
.cmd = do_of_dump,
BAREBOX_CMD_DESC("dump devicetree nodes")
BAREBOX_CMD_OPTS("[-fFnpP] [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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