summaryrefslogtreecommitdiff
path: root/src/arch/x86/boot/smbios.c
blob: 8877f60ea3e3a4e2a21b994630771b079c0fc93a (plain)
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
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2011 Sven Schnelle <svens@stackframe.org>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; version 2 of
 * the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
 * MA 02110-1301 USA
 */

#include <stdlib.h>
#include <string.h>
#include <smbios.h>
#include <console/console.h>
#include <build.h>
#include <device/device.h>
#include <arch/cpu.h>
#include <cpu/x86/name.h>
#include <cbfs_core.h>
#include <arch/byteorder.h>
#include <elog.h>
#if CONFIG_CHROMEOS
#include <vendorcode/google/chromeos/gnvs.h>
#endif

static u8 smbios_checksum(u8 *p, u32 length)
{
	u8 ret = 0;
	while (length--)
		ret += *p++;
	return -ret;
}


int smbios_add_string(char *start, const char *str)
{
	int i = 1;
	char *p = start;

	for(;;) {
		if (!*p) {
			strcpy(p, str);
			p += strlen(str);
			*p++ = '\0';
			*p++ = '\0';
			return i;
		}

		if (!strcmp(p, str))
			return i;

		p += strlen(p)+1;
		i++;
	}
}

int smbios_string_table_len(char *start)
{
	char *p = start;
	int i, len = 0;

	while(*p) {
		i = strlen(p) + 1;
		p += i;
		len += i;
	}
	return len + 1;
}

static int smbios_cpu_vendor(char *start)
{
	char tmp[13] = "Unknown";
	u32 *_tmp = (u32 *)tmp;
	struct cpuid_result res;

	if (cpu_have_cpuid()) {
		res = cpuid(0);
		_tmp[0] = res.ebx;
		_tmp[1] = res.edx;
		_tmp[2] = res.ecx;
		tmp[12] = '\0';
	}

	return smbios_add_string(start, tmp);
}

static int smbios_processor_name(char *start)
{
	char tmp[49] = "Unknown Processor Name";
	u32  *_tmp = (u32 *)tmp;
	struct cpuid_result res;
	int i;

	if (cpu_have_cpuid()) {
		res = cpuid(0x80000000);
		if (res.eax >= 0x80000004) {
			for (i = 0; i < 3; i++) {
				res = cpuid(0x80000002 + i);
				_tmp[i * 4 + 0] = res.eax;
				_tmp[i * 4 + 1] = res.ebx;
				_tmp[i * 4 + 2] = res.ecx;
				_tmp[i * 4 + 3] = res.edx;
			}
			tmp[48] = 0;
		}
	}
	return smbios_add_string(start, tmp);
}

static int smbios_write_type0(unsigned long *current, int handle)
{
	struct cbfs_header *hdr;
	struct smbios_type0 *t = (struct smbios_type0 *)*current;
	int len = sizeof(struct smbios_type0);

	memset(t, 0, sizeof(struct smbios_type0));
	t->type = SMBIOS_BIOS_INFORMATION;
	t->handle = handle;
	t->length = len - 2;

	t->vendor = smbios_add_string(t->eos, "coreboot");
#if !CONFIG_CHROMEOS
	t->bios_release_date = smbios_add_string(t->eos, COREBOOT_DMI_DATE);
	t->bios_version = smbios_add_string(t->eos, COREBOOT_VERSION);
#else
#define SPACES \
	"                                                                  "
	t->bios_release_date = smbios_add_string(t->eos, COREBOOT_DMI_DATE);
	u32 version_offset = (u32)smbios_string_table_len(t->eos);
	t->bios_version = smbios_add_string(t->eos, SPACES);
	/* SMBIOS offsets start at 1 rather than 0 */
	vboot_data->vbt10 = (u32)t->eos + (version_offset - 1);
#endif

	if ((hdr = get_cbfs_header()) != (struct cbfs_header *)0xffffffff)
		t->bios_rom_size = (ntohl(hdr->romsize) / 65535) - 1;
	t->system_bios_major_release = 4;
	t->bios_characteristics =
		BIOS_CHARACTERISTICS_PCI_SUPPORTED |
#if CONFIG_CARDBUS_PLUGIN_SUPPORT
		BIOS_CHARACTERISTICS_PC_CARD |
#endif
		BIOS_CHARACTERISTICS_SELECTABLE_BOOT |
		BIOS_CHARACTERISTICS_UPGRADEABLE;

#if CONFIG_GENERATE_ACPI_TABLES
	t->bios_characteristics_ext1 = BIOS_EXT1_CHARACTERISTICS_ACPI;
#endif
	t->bios_characteristics_ext2 = BIOS_EXT2_CHARACTERISTICS_TARGET;
	len = t->length + smbios_string_table_len(t->eos);
	*current += len;
	return len;
}

const char *__attribute__((weak)) smbios_mainboard_serial_number(void)
{
	return CONFIG_MAINBOARD_SERIAL_NUMBER;
}

const char *__attribute__((weak)) smbios_mainboard_version(void)
{
	return CONFIG_MAINBOARD_VERSION;
}

static int smbios_write_type1(unsigned long *current, int handle)
{
	struct smbios_type1 *t = (struct smbios_type1 *)*current;
	int len = sizeof(struct smbios_type1);

	memset(t, 0, sizeof(struct smbios_type1));
	t->type = SMBIOS_SYSTEM_INFORMATION;
	t->handle = handle;
	t->length = len - 2;
	t->manufacturer = smbios_add_string(t->eos, CONFIG_MAINBOARD_VENDOR);
	t->product_name = smbios_add_string(t->eos, CONFIG_MAINBOARD_PART_NUMBER);
	t->serial_number = smbios_add_string(t->eos, smbios_mainboard_serial_number());
	t->version = smbios_add_string(t->eos, smbios_mainboard_version());
	len = t->length + smbios_string_table_len(t->eos);
	*current += len;
	return len;
}

static int smbios_write_type3(unsigned long *current, int handle)
{
	struct smbios_type3 *t = (struct smbios_type3 *)*current;
	int len = sizeof(struct smbios_type3);

	memset(t, 0, sizeof(struct smbios_type3));
	t->type = SMBIOS_SYSTEM_ENCLOSURE;
	t->handle = handle;
	t->length = len - 2;
	t->manufacturer = smbios_add_string(t->eos, CONFIG_MAINBOARD_VENDOR);
	t->bootup_state = SMBIOS_STATE_SAFE;
	t->power_supply_state = SMBIOS_STATE_SAFE;
	t->thermal_state = SMBIOS_STATE_SAFE;
	t->_type = 3;
	t->security_status = SMBIOS_STATE_SAFE;
	len = t->length + smbios_string_table_len(t->eos);
	*current += len;
	return len;
}

static int smbios_write_type4(unsigned long *current, int handle)
{
	struct cpuid_result res;
	struct smbios_type4 *t = (struct smbios_type4 *)*current;
	int len = sizeof(struct smbios_type4);

	/* Provide sane defaults even for CPU without CPUID */
	res.eax = res.edx = 0;
	res.ebx = 0x10000;

	if (cpu_have_cpuid()) {
		res = cpuid(1);
	}

	memset(t, 0, sizeof(struct smbios_type4));
	t->type = SMBIOS_PROCESSOR_INFORMATION;
	t->handle = handle;
	t->length = len - 2;
	t->processor_id[0] = res.eax;
	t->processor_id[1] = res.edx;
	t->processor_manufacturer = smbios_cpu_vendor(t->eos);
	t->processor_version = smbios_processor_name(t->eos);
	t->processor_family = (res.eax > 0) ? 0x0c : 0x6;
	t->processor_type = 3; /* System Processor */
	t->processor_upgrade = 0x06;
	t->core_count = (res.ebx >> 16) & 0xff;
	t->l1_cache_handle = 0xffff;
	t->l2_cache_handle = 0xffff;
	t->l3_cache_handle = 0xffff;
	t->processor_upgrade = 1;
	len = t->length + smbios_string_table_len(t->eos);
	*current += len;
	return len;
}

static int smbios_write_type32(unsigned long *current, int handle)
{
	struct smbios_type32 *t = (struct smbios_type32 *)*current;
	int len = sizeof(struct smbios_type32);

	memset(t, 0, sizeof(struct smbios_type32));
	t->type = SMBIOS_SYSTEM_BOOT_INFORMATION;
	t->handle = handle;
	t->length = len - 2;
	*current += len;
	return len;
}

static int smbios_write_type127(unsigned long *current, int handle)
{
	struct smbios_type127 *t = (struct smbios_type127 *)*current;
	int len = sizeof(struct smbios_type127);

	memset(t, 0, sizeof(struct smbios_type127));
	t->type = SMBIOS_END_OF_TABLE;
	t->handle = handle;
	t->length = len - 2;
	*current += len;
	return len;
}

static int smbios_walk_device_tree(device_t tree, int *handle, unsigned long *current)
{
	device_t dev;
	int len = 0;

	for(dev = tree; dev; dev = dev->next) {
		printk(BIOS_INFO, "%s (%s)\n", dev_path(dev), dev->chip_ops ? dev->chip_ops->name : "");

		if (dev->ops && dev->ops->get_smbios_data)
			len += dev->ops->get_smbios_data(dev, handle, current);

		if (dev->chip_ops && dev->chip_ops->get_smbios_data)
			len += dev->chip_ops->get_smbios_data(dev, handle, current);
	}
	return len;
}

unsigned long smbios_write_tables(unsigned long current)
{
	struct smbios_entry *se;
	unsigned long tables;
	int len, handle = 0;

	current = ALIGN(current, 16);
	printk(BIOS_DEBUG, "%s: %08lx\n", __func__, current);

	se = (struct smbios_entry *)current;
	current += sizeof(struct smbios_entry);
	current = ALIGN(current, 16);

	tables = current;
	len = smbios_write_type0(&current, handle++);
	len += smbios_write_type1(&current, handle++);
	len += smbios_write_type3(&current, handle++);
	len += smbios_write_type4(&current, handle++);
#if CONFIG_ELOG
	len += elog_smbios_write_type15(&current, handle++);
#endif
	len += smbios_write_type32(&current, handle++);

	len += smbios_walk_device_tree(all_devices, &handle, &current);

	len += smbios_write_type127(&current, handle++);

	memset(se, 0, sizeof(struct smbios_entry));
	memcpy(se->anchor, "_SM_", 4);
	se->length = sizeof(struct smbios_entry);
	se->major_version = 2;
	se->minor_version = 7;
	se->max_struct_size = 24;
	se->struct_count = handle;
	memcpy(se->intermediate_anchor_string, "_DMI_", 5);

	se->struct_table_address = (u32)tables;
	se->struct_table_length = len;

	se->intermediate_checksum = smbios_checksum((u8 *)se + 0x10,
						    sizeof(struct smbios_entry) - 0x10);
	se->checksum = smbios_checksum((u8 *)se, sizeof(struct smbios_entry));
	return current;
}