1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (c) 2014
4 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
5 *
6 * Based on lib/fdtdec.c:
7 * Copyright (c) 2011 The Chromium OS Authors.
8 */
9
10#ifndef USE_HOSTCC
11#include <log.h>
12#include <linux/libfdt.h>
13#include <fdtdec.h>
14#else
15#include "libfdt.h"
16#include "fdt_support.h"
17
18#define debug(...)
19#endif
20
21int fdtdec_get_int(const void *blob, int node, const char *prop_name,
22		int default_val)
23{
24	const int *cell;
25	int len;
26
27	debug("%s: %s: ", __func__, prop_name);
28	cell = fdt_getprop(blob, node, prop_name, &len);
29	if (cell && len >= sizeof(int)) {
30		int val = fdt32_to_cpu(cell[0]);
31
32		debug("%#x (%d)\n", val, val);
33		return val;
34	}
35	debug("(not found)\n");
36	return default_val;
37}
38
39unsigned int fdtdec_get_uint(const void *blob, int node, const char *prop_name,
40			unsigned int default_val)
41{
42	const int *cell;
43	int len;
44
45	debug("%s: %s: ", __func__, prop_name);
46	cell = fdt_getprop(blob, node, prop_name, &len);
47	if (cell && len >= sizeof(unsigned int)) {
48		unsigned int val = fdt32_to_cpu(cell[0]);
49
50		debug("%#x (%d)\n", val, val);
51		return val;
52	}
53	debug("(not found)\n");
54	return default_val;
55}
56
57int fdtdec_get_child_count(const void *blob, int node)
58{
59	int subnode;
60	int num = 0;
61
62	fdt_for_each_subnode(subnode, blob, node)
63		num++;
64
65	return num;
66}
67