1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
// SPDX-License-Identifier: LGPL-2.1-or-later
/*
* libfdt - Flat Device Tree manipulation
* Tests if two given dtbs are structurally equal (including order)
* Copyright (C) 2007 David Gibson, IBM Corporation.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <limits.h>
#include <libfdt.h>
#include "tests.h"
#include "testdata.h"
static int notequal; /* = 0 */
static int ignore_memrsv; /* = 0 */
#define MISMATCH(fmt, ...) \
do { \
if (notequal) \
PASS(); \
else \
FAIL(fmt, ##__VA_ARGS__); \
} while (0)
#define MATCH() \
do { \
if (!notequal) \
PASS(); \
else \
FAIL("Trees match which shouldn't"); \
} while (0)
#define CHECK(code) \
{ \
err = (code); \
if (err) \
FAIL(#code ": %s", fdt_strerror(err)); \
}
static int mem_rsv_cmp(const void *p1, const void *p2)
{
const struct fdt_reserve_entry *re1 = p1;
const struct fdt_reserve_entry *re2 = p2;
if (fdt64_to_cpu(re1->address) < fdt64_to_cpu(re2->address))
return -1;
else if (fdt64_to_cpu(re1->address) > fdt64_to_cpu(re2->address))
return 1;
if (fdt64_to_cpu(re1->size) < fdt64_to_cpu(re2->size))
return -1;
else if (fdt64_to_cpu(re1->size) > fdt64_to_cpu(re2->size))
return 1;
return 0;
}
static void compare_mem_rsv(void *fdt1, void *fdt2)
{
int i;
uint64_t addr1, size1, addr2, size2;
int err;
if (fdt_num_mem_rsv(fdt1) != fdt_num_mem_rsv(fdt2))
MISMATCH("Trees have different number of reserve entries");
qsort((char *)fdt1 + fdt_off_mem_rsvmap(fdt1), fdt_num_mem_rsv(fdt1),
sizeof(struct fdt_reserve_entry), mem_rsv_cmp);
qsort((char *)fdt2 + fdt_off_mem_rsvmap(fdt2), fdt_num_mem_rsv(fdt2),
sizeof(struct fdt_reserve_entry), mem_rsv_cmp);
for (i = 0; i < fdt_num_mem_rsv(fdt1); i++) {
CHECK(fdt_get_mem_rsv(fdt1, i, &addr1, &size1));
CHECK(fdt_get_mem_rsv(fdt2, i, &addr2, &size2));
if ((addr1 != addr2) || (size1 != size2))
MISMATCH("Mismatch in reserve entry %d: "
"(0x%llx, 0x%llx) != (0x%llx, 0x%llx)", i,
(unsigned long long)addr1,
(unsigned long long)size1,
(unsigned long long)addr2,
(unsigned long long)size2);
}
}
static void compare_properties(const void *fdt1, int offset1,
const void *fdt2, int offset2)
{
int offset = offset1;
/* Check the properties */
for (offset = fdt_first_property_offset(fdt1, offset1);
offset >= 0;
offset = fdt_next_property_offset(fdt1, offset)) {
const char *name;
int len1, len2;
const void *data1, *data2;
int i;
data1 = fdt_getprop_by_offset(fdt1, offset, &name, &len1);
if (!data1)
FAIL("fdt_getprop_by_offset(): %s\n",
fdt_strerror(len1));
verbose_printf("Property '%s'\n", name);
data2 = fdt_getprop(fdt2, offset2, name, &len2);
if (!data2) {
if (len2 == -FDT_ERR_NOTFOUND)
MISMATCH("Property '%s' missing\n", name);
else
FAIL("fdt_get_property(): %s\n",
fdt_strerror(len2));
}
verbose_printf("len1=%d data1=", len1);
for (i = 0; i < len1; i++)
verbose_printf(" %02x", ((const char *)data1)[i]);
verbose_printf("\nlen2=%d data2=", len2);
for (i = 0; i < len1; i++)
verbose_printf(" %02x", ((const char *)data2)[i]);
verbose_printf("\n");
if (len1 != len2)
MISMATCH("Property '%s' mismatched length %d vs. %d\n",
name, len1, len2);
else if (memcmp(data1, data2, len1) != 0)
MISMATCH("Property '%s' mismatched value\n", name);
}
}
static void compare_node(const void *fdt1, int offset1,
const void *fdt2, int offset2);
static void compare_subnodes(const void *fdt1, int offset1,
const void *fdt2, int offset2,
int recurse)
{
int coffset1, coffset2, depth;
for (depth = 0, coffset1 = offset1;
(coffset1 >= 0) && (depth >= 0);
coffset1 = fdt_next_node(fdt1, coffset1, &depth))
if (depth == 1) {
const char *name = fdt_get_name(fdt1, coffset1, NULL);
verbose_printf("Subnode %s\n", name);
coffset2 = fdt_subnode_offset(fdt2, offset2, name);
if (coffset2 == -FDT_ERR_NOTFOUND)
MISMATCH("Subnode %s missing\n", name);
else if (coffset2 < 0)
FAIL("fdt_subnode_offset(): %s\n",
fdt_strerror(coffset2));
if (recurse)
compare_node(fdt1, coffset1, fdt2, coffset2);
}
}
static void compare_node(const void *fdt1, int offset1,
const void *fdt2, int offset2)
{
int err;
char path1[PATH_MAX], path2[PATH_MAX];
CHECK(fdt_get_path(fdt1, offset1, path1, sizeof(path1)));
CHECK(fdt_get_path(fdt2, offset2, path2, sizeof(path2)));
if (!streq(path1, path2))
TEST_BUG("Path mismatch %s vs. %s\n", path1, path2);
verbose_printf("Checking %s\n", path1);
compare_properties(fdt1, offset1, fdt2, offset2);
compare_properties(fdt2, offset2, fdt1, offset1);
compare_subnodes(fdt1, offset1, fdt2, offset2, 1);
compare_subnodes(fdt2, offset2, fdt1, offset1, 0);
}
static void badargs(char **argv)
{
CONFIG("Usage: %s [-n] [-m] <dtb file> <dtb file>", argv[0]);
}
int main(int argc, char *argv[])
{
void *fdt1, *fdt2;
uint32_t cpuid1, cpuid2;
char **args;
int argsleft;
test_init(argc, argv);
args = &argv[1];
argsleft = argc - 1;
while (argsleft > 2) {
if (streq(args[0], "-n"))
notequal = 1;
else if (streq(args[0], "-m"))
ignore_memrsv = 1;
else
badargs(argv);
args++;
argsleft--;
}
if (argsleft != 2)
badargs(argv);
fdt1 = load_blob(args[0]);
fdt2 = load_blob(args[1]);
if (!ignore_memrsv)
compare_mem_rsv(fdt1, fdt2);
compare_node(fdt1, 0, fdt2, 0);
cpuid1 = fdt_boot_cpuid_phys(fdt1);
cpuid2 = fdt_boot_cpuid_phys(fdt2);
if (cpuid1 != cpuid2)
MISMATCH("boot_cpuid_phys mismatch 0x%x != 0x%x",
cpuid1, cpuid2);
MATCH();
}
|
