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
231
232
233
234
235
236
237
238
239
240
241
242
243
|
/*
* SMBIOS Support
*
* Copyright (C) 2009 Hewlett-Packard Development Company, L.P.
*
* Authors:
* Alex Williamson <alex.williamson@hp.com>
*
* This work is licensed under the terms of the GNU GPL, version 2. See
* the COPYING file in the top-level directory.
*
* Contributions after 2012-01-13 are licensed under the terms of the
* GNU GPL, version 2 or (at your option) any later version.
*/
#include "qemu/error-report.h"
#include "sysemu/sysemu.h"
#include "hw/i386/smbios.h"
#include "hw/loader.h"
/*
* Structures shared with the BIOS
*/
struct smbios_header {
uint16_t length;
uint8_t type;
} QEMU_PACKED;
struct smbios_field {
struct smbios_header header;
uint8_t type;
uint16_t offset;
uint8_t data[];
} QEMU_PACKED;
struct smbios_table {
struct smbios_header header;
uint8_t data[];
} QEMU_PACKED;
#define SMBIOS_FIELD_ENTRY 0
#define SMBIOS_TABLE_ENTRY 1
static uint8_t *smbios_entries;
static size_t smbios_entries_len;
static int smbios_type4_count = 0;
static void smbios_validate_table(void)
{
if (smbios_type4_count && smbios_type4_count != smp_cpus) {
error_report("Number of SMBIOS Type 4 tables must match cpu count");
exit(1);
}
}
uint8_t *smbios_get_table(size_t *length)
{
smbios_validate_table();
*length = smbios_entries_len;
return smbios_entries;
}
/*
* To avoid unresolvable overlaps in data, don't allow both
* tables and fields for the same smbios type.
*/
static void smbios_check_collision(int type, int entry)
{
uint16_t *num_entries = (uint16_t *)smbios_entries;
struct smbios_header *header;
char *p;
int i;
if (!num_entries)
return;
p = (char *)(num_entries + 1);
for (i = 0; i < *num_entries; i++) {
header = (struct smbios_header *)p;
if (entry == SMBIOS_TABLE_ENTRY && header->type == SMBIOS_FIELD_ENTRY) {
struct smbios_field *field = (void *)header;
if (type == field->type) {
error_report("SMBIOS type %d field already defined, "
"cannot add table", type);
exit(1);
}
} else if (entry == SMBIOS_FIELD_ENTRY &&
header->type == SMBIOS_TABLE_ENTRY) {
struct smbios_structure_header *table = (void *)(header + 1);
if (type == table->type) {
error_report("SMBIOS type %d table already defined, "
"cannot add field", type);
exit(1);
}
}
p += le16_to_cpu(header->length);
}
}
void smbios_add_field(int type, int offset, const void *data, size_t len)
{
struct smbios_field *field;
smbios_check_collision(type, SMBIOS_FIELD_ENTRY);
if (!smbios_entries) {
smbios_entries_len = sizeof(uint16_t);
smbios_entries = g_malloc0(smbios_entries_len);
}
smbios_entries = g_realloc(smbios_entries, smbios_entries_len +
sizeof(*field) + len);
field = (struct smbios_field *)(smbios_entries + smbios_entries_len);
field->header.type = SMBIOS_FIELD_ENTRY;
field->header.length = cpu_to_le16(sizeof(*field) + len);
field->type = type;
field->offset = cpu_to_le16(offset);
memcpy(field->data, data, len);
smbios_entries_len += sizeof(*field) + len;
(*(uint16_t *)smbios_entries) =
cpu_to_le16(le16_to_cpu(*(uint16_t *)smbios_entries) + 1);
}
static void smbios_build_type_0_fields(const char *t)
{
char buf[1024];
unsigned char major, minor;
if (get_param_value(buf, sizeof(buf), "vendor", t))
smbios_add_field(0, offsetof(struct smbios_type_0, vendor_str),
buf, strlen(buf) + 1);
if (get_param_value(buf, sizeof(buf), "version", t))
smbios_add_field(0, offsetof(struct smbios_type_0, bios_version_str),
buf, strlen(buf) + 1);
if (get_param_value(buf, sizeof(buf), "date", t))
smbios_add_field(0, offsetof(struct smbios_type_0,
bios_release_date_str),
buf, strlen(buf) + 1);
if (get_param_value(buf, sizeof(buf), "release", t)) {
sscanf(buf, "%hhu.%hhu", &major, &minor);
smbios_add_field(0, offsetof(struct smbios_type_0,
system_bios_major_release),
&major, 1);
smbios_add_field(0, offsetof(struct smbios_type_0,
system_bios_minor_release),
&minor, 1);
}
}
static void smbios_build_type_1_fields(const char *t)
{
char buf[1024];
if (get_param_value(buf, sizeof(buf), "manufacturer", t))
smbios_add_field(1, offsetof(struct smbios_type_1, manufacturer_str),
buf, strlen(buf) + 1);
if (get_param_value(buf, sizeof(buf), "product", t))
smbios_add_field(1, offsetof(struct smbios_type_1, product_name_str),
buf, strlen(buf) + 1);
if (get_param_value(buf, sizeof(buf), "version", t))
smbios_add_field(1, offsetof(struct smbios_type_1, version_str),
buf, strlen(buf) + 1);
if (get_param_value(buf, sizeof(buf), "serial", t))
smbios_add_field(1, offsetof(struct smbios_type_1, serial_number_str),
buf, strlen(buf) + 1);
if (get_param_value(buf, sizeof(buf), "uuid", t)) {
if (qemu_uuid_parse(buf, qemu_uuid) != 0) {
error_report("Invalid UUID");
exit(1);
}
}
if (get_param_value(buf, sizeof(buf), "sku", t))
smbios_add_field(1, offsetof(struct smbios_type_1, sku_number_str),
buf, strlen(buf) + 1);
if (get_param_value(buf, sizeof(buf), "family", t))
smbios_add_field(1, offsetof(struct smbios_type_1, family_str),
buf, strlen(buf) + 1);
}
int smbios_entry_add(const char *t)
{
char buf[1024];
if (get_param_value(buf, sizeof(buf), "file", t)) {
struct smbios_structure_header *header;
struct smbios_table *table;
int size = get_image_size(buf);
if (size == -1 || size < sizeof(struct smbios_structure_header)) {
error_report("Cannot read SMBIOS file %s", buf);
exit(1);
}
if (!smbios_entries) {
smbios_entries_len = sizeof(uint16_t);
smbios_entries = g_malloc0(smbios_entries_len);
}
smbios_entries = g_realloc(smbios_entries, smbios_entries_len +
sizeof(*table) + size);
table = (struct smbios_table *)(smbios_entries + smbios_entries_len);
table->header.type = SMBIOS_TABLE_ENTRY;
table->header.length = cpu_to_le16(sizeof(*table) + size);
if (load_image(buf, table->data) != size) {
error_report("Failed to load SMBIOS file %s", buf);
exit(1);
}
header = (struct smbios_structure_header *)(table->data);
smbios_check_collision(header->type, SMBIOS_TABLE_ENTRY);
if (header->type == 4) {
smbios_type4_count++;
}
smbios_entries_len += sizeof(*table) + size;
(*(uint16_t *)smbios_entries) =
cpu_to_le16(le16_to_cpu(*(uint16_t *)smbios_entries) + 1);
return 0;
}
if (get_param_value(buf, sizeof(buf), "type", t)) {
unsigned long type = strtoul(buf, NULL, 0);
switch (type) {
case 0:
smbios_build_type_0_fields(t);
return 0;
case 1:
smbios_build_type_1_fields(t);
return 0;
default:
error_report("Don't know how to build fields for SMBIOS type %ld",
type);
exit(1);
}
}
error_report("Must specify type= or file=");
return -1;
}
|
