1 /*
2 * libfdt - Flat Device Tree manipulation
3 * Testcase for fdt_subnode_offset()
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_subnode(struct fdt_header * fdt,int parent,const char * name)30 static int check_subnode(struct fdt_header *fdt, int parent, const char *name)
31 {
32 int offset;
33 const struct fdt_node_header *nh;
34 uint32_t tag;
35
36 verbose_printf("Checking subnode \"%s\" of %d...", name, parent);
37 offset = fdt_subnode_offset(fdt, parent, name);
38 verbose_printf("offset %d...", offset);
39 if (offset < 0)
40 FAIL("fdt_subnode_offset(\"%s\"): %s", name, fdt_strerror(offset));
41 nh = fdt_offset_ptr(fdt, offset, sizeof(*nh));
42 verbose_printf("pointer %p\n", nh);
43 if (! nh)
44 FAIL("NULL retrieving subnode \"%s\"", name);
45
46 tag = fdt32_to_cpu(nh->tag);
47
48 if (tag != FDT_BEGIN_NODE)
49 FAIL("Incorrect tag 0x%08x on property \"%s\"", tag, name);
50 if (!nodename_eq(nh->name, name))
51 FAIL("Subnode name mismatch \"%s\" instead of \"%s\"",
52 nh->name, name);
53
54 return offset;
55 }
56
main(int argc,char * argv[])57 int main(int argc, char *argv[])
58 {
59 void *fdt;
60 int subnode1_offset, subnode2_offset;
61 int subsubnode1_offset, subsubnode2_offset, subsubnode2_offset2;
62 int ss12_off, ss21_off;
63
64 test_init(argc, argv);
65 fdt = load_blob_arg(argc, argv);
66
67 subnode1_offset = check_subnode(fdt, 0, "subnode@1");
68 subnode2_offset = check_subnode(fdt, 0, "subnode@2");
69
70 if (subnode1_offset == subnode2_offset)
71 FAIL("Different subnodes have same offset");
72
73 check_property_cell(fdt, subnode1_offset, "prop-int", TEST_VALUE_1);
74 check_property_cell(fdt, subnode2_offset, "prop-int", TEST_VALUE_2);
75
76 subsubnode1_offset = check_subnode(fdt, subnode1_offset, "subsubnode");
77 subsubnode2_offset = check_subnode(fdt, subnode2_offset, "subsubnode@0");
78 subsubnode2_offset2 = check_subnode(fdt, subnode2_offset, "subsubnode");
79
80 check_property_cell(fdt, subsubnode1_offset, "prop-int", TEST_VALUE_1);
81 check_property_cell(fdt, subsubnode2_offset, "prop-int", TEST_VALUE_2);
82 check_property_cell(fdt, subsubnode2_offset2, "prop-int", TEST_VALUE_2);
83
84 if (subsubnode2_offset != subsubnode2_offset2)
85 FAIL("Different offsets with and without unit address");
86
87 check_subnode(fdt, subnode1_offset, "ss1");
88 ss21_off = fdt_subnode_offset(fdt, subnode2_offset, "ss1");
89 if (ss21_off != -FDT_ERR_NOTFOUND)
90 FAIL("Incorrectly found ss1 in subnode2");
91
92 ss12_off = fdt_subnode_offset(fdt, subnode1_offset, "ss2");
93 if (ss12_off != -FDT_ERR_NOTFOUND)
94 FAIL("Incorrectly found ss2 in subnode1");
95 check_subnode(fdt, subnode2_offset, "ss2");
96
97 PASS();
98 }
99