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
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* The 'smbios' command displays information from the SMBIOS table.
*
* Copyright (c) 2023, Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
*/
#include <command.h>
#include <hexdump.h>
#include <mapmem.h>
#include <smbios.h>
#include <tables_csum.h>
#include <asm/global_data.h>
DECLARE_GLOBAL_DATA_PTR;
/**
* smbios_get_string() - get SMBIOS string from table
*
* @table: SMBIOS table
* @index: index of the string
* Return: address of string, may point to empty string
*/
static const char *smbios_get_string(void *table, int index)
{
const char *str = (char *)table +
((struct smbios_header *)table)->length;
if (!*str)
++str;
for (--index; *str && index; --index)
str += strlen(str) + 1;
return str;
}
static struct smbios_header *next_table(struct smbios_header *table)
{
const char *str;
if (table->type == SMBIOS_END_OF_TABLE)
return NULL;
str = smbios_get_string(table, 0);
return (struct smbios_header *)(++str);
}
static void smbios_print_generic(struct smbios_header *table)
{
char *str = (char *)table + table->length;
if (CONFIG_IS_ENABLED(HEXDUMP)) {
printf("Header and Data:\n");
print_hex_dump("\t", DUMP_PREFIX_OFFSET, 16, 1,
table, table->length, false);
}
if (*str) {
printf("Strings:\n");
for (int index = 1; *str; ++index) {
printf("\tString %u: %s\n", index, str);
str += strlen(str) + 1;
}
}
}
void smbios_print_str(const char *label, void *table, u8 index)
{
printf("\t%s: %s\n", label, smbios_get_string(table, index));
}
static void smbios_print_type1(struct smbios_type1 *table)
{
printf("System Information\n");
smbios_print_str("Manufacturer", table, table->manufacturer);
smbios_print_str("Product Name", table, table->product_name);
smbios_print_str("Version", table, table->version);
smbios_print_str("Serial Number", table, table->serial_number);
if (table->length >= 0x19) {
printf("\tUUID: %pUl\n", table->uuid);
smbios_print_str("Wake Up Type", table, table->serial_number);
}
if (table->length >= 0x1b) {
smbios_print_str("Serial Number", table, table->serial_number);
smbios_print_str("SKU Number", table, table->sku_number);
}
}
static void smbios_print_type2(struct smbios_type2 *table)
{
u16 *handle;
printf("Base Board Information\n");
smbios_print_str("Manufacturer", table, table->manufacturer);
smbios_print_str("Product Name", table, table->product_name);
smbios_print_str("Version", table, table->version);
smbios_print_str("Serial Number", table, table->serial_number);
smbios_print_str("Asset Tag", table, table->asset_tag_number);
printf("\tFeature Flags: 0x%04x\n", table->feature_flags);
smbios_print_str("Chassis Location", table, table->chassis_location);
printf("\tChassis Handle: 0x%04x\n", table->chassis_handle);
smbios_print_str("Board Type", table, table->board_type);
printf("\tContained Object Handles: ");
handle = (void *)table->eos;
for (int i = 0; i < table->number_contained_objects; ++i)
printf("0x%04x ", handle[i]);
printf("\n");
}
static void smbios_print_type127(struct smbios_type127 *table)
{
printf("End Of Table\n");
}
static int do_smbios(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
ulong addr;
void *entry;
u32 size;
char version[12];
struct smbios_header *table;
static const char smbios_sig[] = "_SM_";
static const char smbios3_sig[] = "_SM3_";
size_t count = 0;
u32 max_struct_size;
addr = gd_smbios_start();
if (!addr) {
log_warning("SMBIOS not available\n");
return CMD_RET_FAILURE;
}
entry = map_sysmem(addr, 0);
if (!memcmp(entry, smbios3_sig, sizeof(smbios3_sig) - 1)) {
struct smbios3_entry *entry3 = entry;
table = (void *)(uintptr_t)entry3->struct_table_address;
snprintf(version, sizeof(version), "%d.%d.%d",
entry3->major_ver, entry3->minor_ver, entry3->doc_rev);
table = (void *)(uintptr_t)entry3->struct_table_address;
size = entry3->length;
max_struct_size = entry3->max_struct_size;
} else if (!memcmp(entry, smbios_sig, sizeof(smbios_sig) - 1)) {
struct smbios_entry *entry2 = entry;
snprintf(version, sizeof(version), "%d.%d",
entry2->major_ver, entry2->minor_ver);
table = (void *)(uintptr_t)entry2->struct_table_address;
size = entry2->length;
max_struct_size = entry2->max_struct_size;
} else {
log_err("Unknown SMBIOS anchor format\n");
return CMD_RET_FAILURE;
}
if (table_compute_checksum(entry, size)) {
log_err("Invalid anchor checksum\n");
return CMD_RET_FAILURE;
}
printf("SMBIOS %s present.\n", version);
for (struct smbios_header *pos = table; pos; pos = next_table(pos))
++count;
printf("%zd structures occupying %d bytes\n", count, max_struct_size);
printf("Table at 0x%llx\n", (unsigned long long)map_to_sysmem(table));
for (struct smbios_header *pos = table; pos; pos = next_table(pos)) {
printf("\nHandle 0x%04x, DMI type %d, %d bytes at 0x%llx\n",
pos->handle, pos->type, pos->length,
(unsigned long long)map_to_sysmem(pos));
switch (pos->type) {
case 1:
smbios_print_type1((struct smbios_type1 *)pos);
break;
case 2:
smbios_print_type2((struct smbios_type2 *)pos);
break;
case 127:
smbios_print_type127((struct smbios_type127 *)pos);
break;
default:
smbios_print_generic(pos);
break;
}
}
return CMD_RET_SUCCESS;
}
U_BOOT_LONGHELP(smbios, "- display SMBIOS information");
U_BOOT_CMD(smbios, 1, 0, do_smbios, "display SMBIOS information",
smbios_help_text);
|
