1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18#include "qemu/config-file.h"
19#include "qemu/error-report.h"
20#include "sysemu/sysemu.h"
21#include "hw/i386/smbios.h"
22#include "hw/loader.h"
23
24
25
26
27struct smbios_header {
28 uint16_t length;
29 uint8_t type;
30} QEMU_PACKED;
31
32struct smbios_field {
33 struct smbios_header header;
34 uint8_t type;
35 uint16_t offset;
36 uint8_t data[];
37} QEMU_PACKED;
38
39struct smbios_table {
40 struct smbios_header header;
41 uint8_t data[];
42} QEMU_PACKED;
43
44#define SMBIOS_FIELD_ENTRY 0
45#define SMBIOS_TABLE_ENTRY 1
46
47static uint8_t *smbios_entries;
48static size_t smbios_entries_len;
49static int smbios_type4_count = 0;
50static bool smbios_immutable;
51
52static struct {
53 bool seen;
54 int headertype;
55 Location loc;
56} first_opt[2];
57
58static struct {
59 const char *vendor, *version, *date;
60 bool have_major_minor;
61 uint8_t major, minor;
62} type0;
63
64static struct {
65 const char *manufacturer, *product, *version, *serial, *sku, *family;
66
67} type1;
68
69static QemuOptsList qemu_smbios_opts = {
70 .name = "smbios",
71 .head = QTAILQ_HEAD_INITIALIZER(qemu_smbios_opts.head),
72 .desc = {
73
74
75
76
77 { }
78 }
79};
80
81static const QemuOptDesc qemu_smbios_file_opts[] = {
82 {
83 .name = "file",
84 .type = QEMU_OPT_STRING,
85 .help = "binary file containing an SMBIOS element",
86 },
87 { }
88};
89
90static const QemuOptDesc qemu_smbios_type0_opts[] = {
91 {
92 .name = "type",
93 .type = QEMU_OPT_NUMBER,
94 .help = "SMBIOS element type",
95 },{
96 .name = "vendor",
97 .type = QEMU_OPT_STRING,
98 .help = "vendor name",
99 },{
100 .name = "version",
101 .type = QEMU_OPT_STRING,
102 .help = "version number",
103 },{
104 .name = "date",
105 .type = QEMU_OPT_STRING,
106 .help = "release date",
107 },{
108 .name = "release",
109 .type = QEMU_OPT_STRING,
110 .help = "revision number",
111 },
112 { }
113};
114
115static const QemuOptDesc qemu_smbios_type1_opts[] = {
116 {
117 .name = "type",
118 .type = QEMU_OPT_NUMBER,
119 .help = "SMBIOS element type",
120 },{
121 .name = "manufacturer",
122 .type = QEMU_OPT_STRING,
123 .help = "manufacturer name",
124 },{
125 .name = "product",
126 .type = QEMU_OPT_STRING,
127 .help = "product name",
128 },{
129 .name = "version",
130 .type = QEMU_OPT_STRING,
131 .help = "version number",
132 },{
133 .name = "serial",
134 .type = QEMU_OPT_STRING,
135 .help = "serial number",
136 },{
137 .name = "uuid",
138 .type = QEMU_OPT_STRING,
139 .help = "UUID",
140 },{
141 .name = "sku",
142 .type = QEMU_OPT_STRING,
143 .help = "SKU number",
144 },{
145 .name = "family",
146 .type = QEMU_OPT_STRING,
147 .help = "family name",
148 },
149 { }
150};
151
152static void smbios_register_config(void)
153{
154 qemu_add_opts(&qemu_smbios_opts);
155}
156
157machine_init(smbios_register_config);
158
159static void smbios_validate_table(void)
160{
161 if (smbios_type4_count && smbios_type4_count != smp_cpus) {
162 error_report("Number of SMBIOS Type 4 tables must match cpu count");
163 exit(1);
164 }
165}
166
167
168
169
170
171static void smbios_check_collision(int type, int entry)
172{
173 if (type < ARRAY_SIZE(first_opt)) {
174 if (first_opt[type].seen) {
175 if (first_opt[type].headertype != entry) {
176 error_report("Can't mix file= and type= for same type");
177 loc_push_restore(&first_opt[type].loc);
178 error_report("This is the conflicting setting");
179 loc_pop(&first_opt[type].loc);
180 exit(1);
181 }
182 } else {
183 first_opt[type].seen = true;
184 first_opt[type].headertype = entry;
185 loc_save(&first_opt[type].loc);
186 }
187 }
188}
189
190static void smbios_add_field(int type, int offset, const void *data, size_t len)
191{
192 struct smbios_field *field;
193
194 if (!smbios_entries) {
195 smbios_entries_len = sizeof(uint16_t);
196 smbios_entries = g_malloc0(smbios_entries_len);
197 }
198 smbios_entries = g_realloc(smbios_entries, smbios_entries_len +
199 sizeof(*field) + len);
200 field = (struct smbios_field *)(smbios_entries + smbios_entries_len);
201 field->header.type = SMBIOS_FIELD_ENTRY;
202 field->header.length = cpu_to_le16(sizeof(*field) + len);
203
204 field->type = type;
205 field->offset = cpu_to_le16(offset);
206 memcpy(field->data, data, len);
207
208 smbios_entries_len += sizeof(*field) + len;
209 (*(uint16_t *)smbios_entries) =
210 cpu_to_le16(le16_to_cpu(*(uint16_t *)smbios_entries) + 1);
211}
212
213static void smbios_maybe_add_str(int type, int offset, const char *data)
214{
215 if (data) {
216 smbios_add_field(type, offset, data, strlen(data) + 1);
217 }
218}
219
220static void smbios_build_type_0_fields(void)
221{
222 smbios_maybe_add_str(0, offsetof(struct smbios_type_0, vendor_str),
223 type0.vendor);
224 smbios_maybe_add_str(0, offsetof(struct smbios_type_0, bios_version_str),
225 type0.version);
226 smbios_maybe_add_str(0, offsetof(struct smbios_type_0,
227 bios_release_date_str),
228 type0.date);
229 if (type0.have_major_minor) {
230 smbios_add_field(0, offsetof(struct smbios_type_0,
231 system_bios_major_release),
232 &type0.major, 1);
233 smbios_add_field(0, offsetof(struct smbios_type_0,
234 system_bios_minor_release),
235 &type0.minor, 1);
236 }
237}
238
239static void smbios_build_type_1_fields(void)
240{
241 smbios_maybe_add_str(1, offsetof(struct smbios_type_1, manufacturer_str),
242 type1.manufacturer);
243 smbios_maybe_add_str(1, offsetof(struct smbios_type_1, product_name_str),
244 type1.product);
245 smbios_maybe_add_str(1, offsetof(struct smbios_type_1, version_str),
246 type1.version);
247 smbios_maybe_add_str(1, offsetof(struct smbios_type_1, serial_number_str),
248 type1.serial);
249 smbios_maybe_add_str(1, offsetof(struct smbios_type_1, sku_number_str),
250 type1.sku);
251 smbios_maybe_add_str(1, offsetof(struct smbios_type_1, family_str),
252 type1.family);
253 if (qemu_uuid_set) {
254 smbios_add_field(1, offsetof(struct smbios_type_1, uuid),
255 qemu_uuid, 16);
256 }
257}
258
259uint8_t *smbios_get_table(size_t *length)
260{
261 if (!smbios_immutable) {
262 smbios_build_type_0_fields();
263 smbios_build_type_1_fields();
264 smbios_validate_table();
265 smbios_immutable = true;
266 }
267 *length = smbios_entries_len;
268 return smbios_entries;
269}
270
271static void save_opt(const char **dest, QemuOpts *opts, const char *name)
272{
273 const char *val = qemu_opt_get(opts, name);
274
275 if (val) {
276 *dest = val;
277 }
278}
279
280void smbios_entry_add(QemuOpts *opts)
281{
282 Error *local_err = NULL;
283 const char *val;
284
285 assert(!smbios_immutable);
286 val = qemu_opt_get(opts, "file");
287 if (val) {
288 struct smbios_structure_header *header;
289 struct smbios_table *table;
290 int size;
291
292 qemu_opts_validate(opts, qemu_smbios_file_opts, &local_err);
293 if (local_err) {
294 error_report("%s", error_get_pretty(local_err));
295 exit(1);
296 }
297
298 size = get_image_size(val);
299 if (size == -1 || size < sizeof(struct smbios_structure_header)) {
300 error_report("Cannot read SMBIOS file %s", val);
301 exit(1);
302 }
303
304 if (!smbios_entries) {
305 smbios_entries_len = sizeof(uint16_t);
306 smbios_entries = g_malloc0(smbios_entries_len);
307 }
308
309 smbios_entries = g_realloc(smbios_entries, smbios_entries_len +
310 sizeof(*table) + size);
311 table = (struct smbios_table *)(smbios_entries + smbios_entries_len);
312 table->header.type = SMBIOS_TABLE_ENTRY;
313 table->header.length = cpu_to_le16(sizeof(*table) + size);
314
315 if (load_image(val, table->data) != size) {
316 error_report("Failed to load SMBIOS file %s", val);
317 exit(1);
318 }
319
320 header = (struct smbios_structure_header *)(table->data);
321 smbios_check_collision(header->type, SMBIOS_TABLE_ENTRY);
322 if (header->type == 4) {
323 smbios_type4_count++;
324 }
325
326 smbios_entries_len += sizeof(*table) + size;
327 (*(uint16_t *)smbios_entries) =
328 cpu_to_le16(le16_to_cpu(*(uint16_t *)smbios_entries) + 1);
329 return;
330 }
331
332 val = qemu_opt_get(opts, "type");
333 if (val) {
334 unsigned long type = strtoul(val, NULL, 0);
335
336 smbios_check_collision(type, SMBIOS_FIELD_ENTRY);
337
338 switch (type) {
339 case 0:
340 qemu_opts_validate(opts, qemu_smbios_type0_opts, &local_err);
341 if (local_err) {
342 error_report("%s", error_get_pretty(local_err));
343 exit(1);
344 }
345 save_opt(&type0.vendor, opts, "vendor");
346 save_opt(&type0.version, opts, "version");
347 save_opt(&type0.date, opts, "date");
348
349 val = qemu_opt_get(opts, "release");
350 if (val) {
351 if (sscanf(val, "%hhu.%hhu", &type0.major, &type0.minor) != 2) {
352 error_report("Invalid release");
353 exit(1);
354 }
355 type0.have_major_minor = true;
356 }
357 return;
358 case 1:
359 qemu_opts_validate(opts, qemu_smbios_type1_opts, &local_err);
360 if (local_err) {
361 error_report("%s", error_get_pretty(local_err));
362 exit(1);
363 }
364 save_opt(&type1.manufacturer, opts, "manufacturer");
365 save_opt(&type1.product, opts, "product");
366 save_opt(&type1.version, opts, "version");
367 save_opt(&type1.serial, opts, "serial");
368 save_opt(&type1.sku, opts, "sku");
369 save_opt(&type1.family, opts, "family");
370
371 val = qemu_opt_get(opts, "uuid");
372 if (val) {
373 if (qemu_uuid_parse(val, qemu_uuid) != 0) {
374 error_report("Invalid UUID");
375 exit(1);
376 }
377 qemu_uuid_set = true;
378 }
379 return;
380 default:
381 error_report("Don't know how to build fields for SMBIOS type %ld",
382 type);
383 exit(1);
384 }
385 }
386
387 error_report("Must specify type= or file=");
388 exit(1);
389}
390
