137 lines
2.7 KiB
C
137 lines
2.7 KiB
C
/*
|
|
* 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 = 0;
|
|
int fix = 0;
|
|
struct device_node *root = NULL, *node, *of_free = NULL;
|
|
char *dtbfile = NULL;
|
|
size_t size;
|
|
const char *nodename;
|
|
|
|
while ((opt = getopt(argc, argv, "Ff:")) > 0) {
|
|
switch (opt) {
|
|
case 'f':
|
|
dtbfile = optarg;
|
|
break;
|
|
case 'F':
|
|
fix = 1;
|
|
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();
|
|
|
|
if (fix) {
|
|
/* create a copy of internal devicetree */
|
|
void *fdt;
|
|
fdt = of_flatten_dtb(root);
|
|
root = of_unflatten_dtb(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;
|
|
}
|
|
|
|
of_print_nodes(node, 0);
|
|
|
|
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\n")
|
|
BAREBOX_CMD_HELP_OPT ("-F", "return fixed devicetree\n")
|
|
BAREBOX_CMD_HELP_END
|
|
|
|
BAREBOX_CMD_START(of_dump)
|
|
.cmd = do_of_dump,
|
|
BAREBOX_CMD_DESC("dump devicetree nodes")
|
|
BAREBOX_CMD_OPTS("[-fF] [NODE]")
|
|
BAREBOX_CMD_GROUP(CMD_GRP_MISC)
|
|
BAREBOX_CMD_COMPLETE(devicetree_file_complete)
|
|
BAREBOX_CMD_HELP(cmd_of_dump_help)
|
|
BAREBOX_CMD_END
|