blob: 5775992ef3373f36b27bdf6b1d2e9c80044d6161 [file] [log] [blame]
Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Heiko Schocherb047d672014-06-22 06:33:29 +02002/*
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.
Heiko Schocherb047d672014-06-22 06:33:29 +02008 */
9
10#ifndef USE_HOSTCC
11#include <common.h>
Masahiro Yamadab08c8c42018-03-05 01:20:11 +090012#include <linux/libfdt.h>
Heiko Schocherb047d672014-06-22 06:33:29 +020013#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}
Chin Liang Seebfa3e552015-10-17 08:30:32 -050038
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}
Kever Yang10d887d2020-03-30 11:56:23 +080056
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}