summaryrefslogtreecommitdiff
path: root/lib/smbios.c
blob: 326eb00230dfd535b33ed425d48a1ecd18d8133e (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
// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
 *
 * Adapted from coreboot src/arch/x86/smbios.c
 */

#include <common.h>
#include <smbios.h>
#include <tables_csum.h>
#include <version.h>
#ifdef CONFIG_CPU
#include <cpu.h>
#include <dm.h>
#include <dm/uclass-internal.h>
#endif

/**
 * smbios_add_string() - add a string to the string area
 *
 * This adds a string to the string area which is appended directly after
 * the formatted portion of an SMBIOS structure.
 *
 * @start:	string area start address
 * @str:	string to add
 * @return:	string number in the string area
 */
static 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++;
	}
}

/**
 * smbios_string_table_len() - compute the string area size
 *
 * This computes the size of the string area including the string terminator.
 *
 * @start:	string area start address
 * @return:	string area size
 */
static 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_write_type0(ulong *current, int handle)
{
	struct smbios_type0 *t = (struct smbios_type0 *)*current;
	int len = sizeof(struct smbios_type0);

	memset(t, 0, sizeof(struct smbios_type0));
	fill_smbios_header(t, SMBIOS_BIOS_INFORMATION, len, handle);
	t->vendor = smbios_add_string(t->eos, "U-Boot");
	t->bios_ver = smbios_add_string(t->eos, PLAIN_VERSION);
	t->bios_release_date = smbios_add_string(t->eos, U_BOOT_DMI_DATE);
#ifdef CONFIG_ROM_SIZE
	t->bios_rom_size = (CONFIG_ROM_SIZE / 65536) - 1;
#endif
	t->bios_characteristics = BIOS_CHARACTERISTICS_PCI_SUPPORTED |
				  BIOS_CHARACTERISTICS_SELECTABLE_BOOT |
				  BIOS_CHARACTERISTICS_UPGRADEABLE;
#ifdef CONFIG_GENERATE_ACPI_TABLE
	t->bios_characteristics_ext1 = BIOS_CHARACTERISTICS_EXT1_ACPI;
#endif
#ifdef CONFIG_EFI_LOADER
	t->bios_characteristics_ext1 |= BIOS_CHARACTERISTICS_EXT1_UEFI;
#endif
	t->bios_characteristics_ext2 = BIOS_CHARACTERISTICS_EXT2_TARGET;

	t->bios_major_release = 0xff;
	t->bios_minor_release = 0xff;
	t->ec_major_release = 0xff;
	t->ec_minor_release = 0xff;

	len = t->length + smbios_string_table_len(t->eos);
	*current += len;

	return len;
}

static int smbios_write_type1(ulong *current, int handle)
{
	struct smbios_type1 *t = (struct smbios_type1 *)*current;
	int len = sizeof(struct smbios_type1);
	char *serial_str = env_get("serial#");

	memset(t, 0, sizeof(struct smbios_type1));
	fill_smbios_header(t, SMBIOS_SYSTEM_INFORMATION, len, handle);
	t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
	t->product_name = smbios_add_string(t->eos, CONFIG_SMBIOS_PRODUCT_NAME);
	if (serial_str) {
		strncpy((char *)t->uuid, serial_str, sizeof(t->uuid));
		t->serial_number = smbios_add_string(t->eos, serial_str);
	}

	len = t->length + smbios_string_table_len(t->eos);
	*current += len;

	return len;
}

static int smbios_write_type2(ulong *current, int handle)
{
	struct smbios_type2 *t = (struct smbios_type2 *)*current;
	int len = sizeof(struct smbios_type2);

	memset(t, 0, sizeof(struct smbios_type2));
	fill_smbios_header(t, SMBIOS_BOARD_INFORMATION, len, handle);
	t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
	t->product_name = smbios_add_string(t->eos, CONFIG_SMBIOS_PRODUCT_NAME);
	t->feature_flags = SMBIOS_BOARD_FEATURE_HOSTING;
	t->board_type = SMBIOS_BOARD_MOTHERBOARD;

	len = t->length + smbios_string_table_len(t->eos);
	*current += len;

	return len;
}

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

	memset(t, 0, sizeof(struct smbios_type3));
	fill_smbios_header(t, SMBIOS_SYSTEM_ENCLOSURE, len, handle);
	t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
	t->chassis_type = SMBIOS_ENCLOSURE_DESKTOP;
	t->bootup_state = SMBIOS_STATE_SAFE;
	t->power_supply_state = SMBIOS_STATE_SAFE;
	t->thermal_state = SMBIOS_STATE_SAFE;
	t->security_status = SMBIOS_SECURITY_NONE;

	len = t->length + smbios_string_table_len(t->eos);
	*current += len;

	return len;
}

static void smbios_write_type4_dm(struct smbios_type4 *t)
{
	u16 processor_family = SMBIOS_PROCESSOR_FAMILY_UNKNOWN;
	const char *vendor = "Unknown";
	const char *name = "Unknown";

#ifdef CONFIG_CPU
	char processor_name[49];
	char vendor_name[49];
	struct udevice *dev = NULL;

	uclass_find_first_device(UCLASS_CPU, &dev);
	if (dev) {
		struct cpu_platdata *plat = dev_get_parent_platdata(dev);

		if (plat->family)
			processor_family = plat->family;
		t->processor_id[0] = plat->id[0];
		t->processor_id[1] = plat->id[1];

		if (!cpu_get_vendor(dev, vendor_name, sizeof(vendor_name)))
			vendor = vendor_name;
		if (!cpu_get_desc(dev, processor_name, sizeof(processor_name)))
			name = processor_name;
	}
#endif

	t->processor_family = processor_family;
	t->processor_manufacturer = smbios_add_string(t->eos, vendor);
	t->processor_version = smbios_add_string(t->eos, name);
}

static int smbios_write_type4(ulong *current, int handle)
{
	struct smbios_type4 *t = (struct smbios_type4 *)*current;
	int len = sizeof(struct smbios_type4);

	memset(t, 0, sizeof(struct smbios_type4));
	fill_smbios_header(t, SMBIOS_PROCESSOR_INFORMATION, len, handle);
	t->processor_type = SMBIOS_PROCESSOR_TYPE_CENTRAL;
	smbios_write_type4_dm(t);
	t->status = SMBIOS_PROCESSOR_STATUS_ENABLED;
	t->processor_upgrade = SMBIOS_PROCESSOR_UPGRADE_NONE;
	t->l1_cache_handle = 0xffff;
	t->l2_cache_handle = 0xffff;
	t->l3_cache_handle = 0xffff;
	t->processor_family2 = t->processor_family;

	len = t->length + smbios_string_table_len(t->eos);
	*current += len;

	return len;
}

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

	memset(t, 0, sizeof(struct smbios_type32));
	fill_smbios_header(t, SMBIOS_SYSTEM_BOOT_INFORMATION, len, handle);

	*current += len;

	return len;
}

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

	memset(t, 0, sizeof(struct smbios_type127));
	fill_smbios_header(t, SMBIOS_END_OF_TABLE, len, handle);

	*current += len;

	return len;
}

static smbios_write_type smbios_write_funcs[] = {
	smbios_write_type0,
	smbios_write_type1,
	smbios_write_type2,
	smbios_write_type3,
	smbios_write_type4,
	smbios_write_type32,
	smbios_write_type127
};

ulong write_smbios_table(ulong addr)
{
	struct smbios_entry *se;
	ulong tables;
	int len = 0;
	int max_struct_size = 0;
	int handle = 0;
	char *istart;
	int isize;
	int i;

	/* 16 byte align the table address */
	addr = ALIGN(addr, 16);

	se = (struct smbios_entry *)(uintptr_t)addr;
	memset(se, 0, sizeof(struct smbios_entry));

	addr += sizeof(struct smbios_entry);
	addr = ALIGN(addr, 16);
	tables = addr;

	/* populate minimum required tables */
	for (i = 0; i < ARRAY_SIZE(smbios_write_funcs); i++) {
		int tmp = smbios_write_funcs[i]((ulong *)&addr, handle++);

		max_struct_size = max(max_struct_size, tmp);
		len += tmp;
	}

	memcpy(se->anchor, "_SM_", 4);
	se->length = sizeof(struct smbios_entry);
	se->major_ver = SMBIOS_MAJOR_VER;
	se->minor_ver = SMBIOS_MINOR_VER;
	se->max_struct_size = max_struct_size;
	memcpy(se->intermediate_anchor, "_DMI_", 5);
	se->struct_table_length = len;
	se->struct_table_address = tables;
	se->struct_count = handle;

	/* calculate checksums */
	istart = (char *)se + SMBIOS_INTERMEDIATE_OFFSET;
	isize = sizeof(struct smbios_entry) - SMBIOS_INTERMEDIATE_OFFSET;
	se->intermediate_checksum = table_compute_checksum(istart, isize);
	se->checksum = table_compute_checksum(se, sizeof(struct smbios_entry));

	return addr;
}