1/*
2 * libfdt - Flat Device Tree manipulation
3 *	Testcase for phandle references in dtc
4 * Copyright (C) 2006 David Gibson, IBM Corporation.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public License
8 * as published by the Free Software Foundation; either version 2.1 of
9 * the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20#include <stdlib.h>
21#include <stdio.h>
22#include <string.h>
23#include <stdint.h>
24
25#include <libfdt.h>
26
27#include "tests.h"
28#include "testdata.h"
29
30static void check_ref(const void *fdt, int node, uint32_t checkref)
31{
32	const uint32_t *p;
33	uint32_t ref;
34	int len;
35
36	p = fdt_getprop(fdt, node, "ref", &len);
37	if (!p)
38		FAIL("fdt_getprop(%d, \"ref\"): %s", node, fdt_strerror(len));
39	if (len != sizeof(*p))
40		FAIL("'ref' in node at %d has wrong size (%d instead of %zd)",
41		     node, len, sizeof(*p));
42	ref = fdt32_to_cpu(*p);
43	if (ref != checkref)
44		FAIL("'ref' in node at %d has value 0x%x instead of 0x%x",
45		     node, ref, checkref);
46
47	p = fdt_getprop(fdt, node, "lref", &len);
48	if (!p)
49		FAIL("fdt_getprop(%d, \"lref\"): %s", node, fdt_strerror(len));
50	if (len != sizeof(*p))
51		FAIL("'lref' in node at %d has wrong size (%d instead of %zd)",
52		     node, len, sizeof(*p));
53	ref = fdt32_to_cpu(*p);
54	if (ref != checkref)
55		FAIL("'lref' in node at %d has value 0x%x instead of 0x%x",
56		     node, ref, checkref);
57}
58
59static void check_rref(const void *fdt)
60{
61	const uint32_t *p;
62	uint32_t ref;
63	int len;
64
65	p = fdt_getprop(fdt, 0, "rref", &len);
66	if (!p)
67		FAIL("fdt_getprop(0, \"rref\"): %s", fdt_strerror(len));
68	if (len != sizeof(*p))
69		FAIL("'rref' in root node has wrong size (%d instead of %zd)",
70		     len, sizeof(*p));
71	ref = fdt32_to_cpu(*p);
72	if (ref != fdt_get_phandle(fdt, 0))
73		FAIL("'rref' in root node has value 0x%x instead of 0x0", ref);
74}
75
76int main(int argc, char *argv[])
77{
78	void *fdt;
79	int n1, n2, n3, n4, n5;
80	uint32_t h1, h2, h4, h5;
81
82	test_init(argc, argv);
83	fdt = load_blob_arg(argc, argv);
84
85	n1 = fdt_path_offset(fdt, "/node1");
86	if (n1 < 0)
87		FAIL("fdt_path_offset(/node1): %s", fdt_strerror(n1));
88	n2 = fdt_path_offset(fdt, "/node2");
89	if (n2 < 0)
90		FAIL("fdt_path_offset(/node2): %s", fdt_strerror(n2));
91	n3 = fdt_path_offset(fdt, "/node3");
92	if (n3 < 0)
93		FAIL("fdt_path_offset(/node3): %s", fdt_strerror(n3));
94	n4 = fdt_path_offset(fdt, "/node4");
95	if (n4 < 0)
96		FAIL("fdt_path_offset(/node4): %s", fdt_strerror(n4));
97	n5 = fdt_path_offset(fdt, "/node5");
98	if (n5 < 0)
99		FAIL("fdt_path_offset(/node5): %s", fdt_strerror(n5));
100
101	h1 = fdt_get_phandle(fdt, n1);
102	h2 = fdt_get_phandle(fdt, n2);
103	h4 = fdt_get_phandle(fdt, n4);
104	h5 = fdt_get_phandle(fdt, n5);
105
106	if (h1 != 0x2000)
107		FAIL("/node1 has wrong phandle, 0x%x instead of 0x%x",
108		     h1, 0x2000);
109	if (h2 != 0x1)
110		FAIL("/node2 has wrong phandle, 0x%x instead of 0x%x",
111		     h2, 0x1);
112	if ((h4 == 0x2000) || (h4 == 0x1) || (h4 == 0))
113		FAIL("/node4 has bad phandle, 0x%x", h4);
114
115	if ((h5 == 0) || (h5 == -1))
116		FAIL("/node5 has bad phandle, 0x%x", h5);
117	if ((h5 == h4) || (h5 == h2) || (h5 == h1))
118		FAIL("/node5 has duplicate phandle, 0x%x", h5);
119
120	check_ref(fdt, n1, h2);
121	check_ref(fdt, n2, h1);
122	check_ref(fdt, n3, h4);
123
124	check_rref(fdt);
125
126	PASS();
127}
128