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
check_ref(const void * fdt,int node,uint32_t checkref)30 static void check_ref(const void *fdt, int node, uint32_t checkref)
31 {
32 const fdt32_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
check_rref(const void * fdt)59 static void check_rref(const void *fdt)
60 {
61 const fdt32_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
main(int argc,char * argv[])76 int 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