1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3 * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
4 *
5 * Adapted from coreboot src/include/smbios.h
6 */
7
8 #ifndef _SMBIOS_H_
9 #define _SMBIOS_H_
10
11 /* SMBIOS spec version implemented */
12 #define SMBIOS_MAJOR_VER 3
13 #define SMBIOS_MINOR_VER 0
14
15 /* SMBIOS structure types */
16 enum {
17 SMBIOS_BIOS_INFORMATION = 0,
18 SMBIOS_SYSTEM_INFORMATION = 1,
19 SMBIOS_BOARD_INFORMATION = 2,
20 SMBIOS_SYSTEM_ENCLOSURE = 3,
21 SMBIOS_PROCESSOR_INFORMATION = 4,
22 SMBIOS_CACHE_INFORMATION = 7,
23 SMBIOS_SYSTEM_SLOTS = 9,
24 SMBIOS_PHYS_MEMORY_ARRAY = 16,
25 SMBIOS_MEMORY_DEVICE = 17,
26 SMBIOS_MEMORY_ARRAY_MAPPED_ADDRESS = 19,
27 SMBIOS_SYSTEM_BOOT_INFORMATION = 32,
28 SMBIOS_END_OF_TABLE = 127
29 };
30
31 #define SMBIOS_INTERMEDIATE_OFFSET 16
32 #define SMBIOS_STRUCT_EOS_BYTES 2
33
34 struct __packed smbios_entry {
35 u8 anchor[4];
36 u8 checksum;
37 u8 length;
38 u8 major_ver;
39 u8 minor_ver;
40 u16 max_struct_size;
41 u8 entry_point_rev;
42 u8 formatted_area[5];
43 u8 intermediate_anchor[5];
44 u8 intermediate_checksum;
45 u16 struct_table_length;
46 u32 struct_table_address;
47 u16 struct_count;
48 u8 bcd_rev;
49 };
50
51 /* BIOS characteristics */
52 #define BIOS_CHARACTERISTICS_PCI_SUPPORTED (1 << 7)
53 #define BIOS_CHARACTERISTICS_UPGRADEABLE (1 << 11)
54 #define BIOS_CHARACTERISTICS_SELECTABLE_BOOT (1 << 16)
55
56 #define BIOS_CHARACTERISTICS_EXT1_ACPI (1 << 0)
57 #define BIOS_CHARACTERISTICS_EXT1_UEFI (1 << 3)
58 #define BIOS_CHARACTERISTICS_EXT2_TARGET (1 << 2)
59
60 struct __packed smbios_type0 {
61 u8 type;
62 u8 length;
63 u16 handle;
64 u8 vendor;
65 u8 bios_ver;
66 u16 bios_start_segment;
67 u8 bios_release_date;
68 u8 bios_rom_size;
69 u64 bios_characteristics;
70 u8 bios_characteristics_ext1;
71 u8 bios_characteristics_ext2;
72 u8 bios_major_release;
73 u8 bios_minor_release;
74 u8 ec_major_release;
75 u8 ec_minor_release;
76 char eos[SMBIOS_STRUCT_EOS_BYTES];
77 };
78
79 struct __packed smbios_type1 {
80 u8 type;
81 u8 length;
82 u16 handle;
83 u8 manufacturer;
84 u8 product_name;
85 u8 version;
86 u8 serial_number;
87 u8 uuid[16];
88 u8 wakeup_type;
89 u8 sku_number;
90 u8 family;
91 char eos[SMBIOS_STRUCT_EOS_BYTES];
92 };
93
94 #define SMBIOS_BOARD_FEATURE_HOSTING (1 << 0)
95 #define SMBIOS_BOARD_MOTHERBOARD 10
96
97 struct __packed smbios_type2 {
98 u8 type;
99 u8 length;
100 u16 handle;
101 u8 manufacturer;
102 u8 product_name;
103 u8 version;
104 u8 serial_number;
105 u8 asset_tag_number;
106 u8 feature_flags;
107 u8 chassis_location;
108 u16 chassis_handle;
109 u8 board_type;
110 char eos[SMBIOS_STRUCT_EOS_BYTES];
111 };
112
113 #define SMBIOS_ENCLOSURE_DESKTOP 3
114 #define SMBIOS_STATE_SAFE 3
115 #define SMBIOS_SECURITY_NONE 3
116
117 struct __packed smbios_type3 {
118 u8 type;
119 u8 length;
120 u16 handle;
121 u8 manufacturer;
122 u8 chassis_type;
123 u8 version;
124 u8 serial_number;
125 u8 asset_tag_number;
126 u8 bootup_state;
127 u8 power_supply_state;
128 u8 thermal_state;
129 u8 security_status;
130 u32 oem_defined;
131 u8 height;
132 u8 number_of_power_cords;
133 u8 element_count;
134 u8 element_record_length;
135 char eos[SMBIOS_STRUCT_EOS_BYTES];
136 };
137
138 #define SMBIOS_PROCESSOR_TYPE_CENTRAL 3
139 #define SMBIOS_PROCESSOR_STATUS_ENABLED 1
140 #define SMBIOS_PROCESSOR_UPGRADE_NONE 6
141
142 #define SMBIOS_PROCESSOR_FAMILY_OTHER 1
143 #define SMBIOS_PROCESSOR_FAMILY_UNKNOWN 2
144
145 struct __packed smbios_type4 {
146 u8 type;
147 u8 length;
148 u16 handle;
149 u8 socket_designation;
150 u8 processor_type;
151 u8 processor_family;
152 u8 processor_manufacturer;
153 u32 processor_id[2];
154 u8 processor_version;
155 u8 voltage;
156 u16 external_clock;
157 u16 max_speed;
158 u16 current_speed;
159 u8 status;
160 u8 processor_upgrade;
161 u16 l1_cache_handle;
162 u16 l2_cache_handle;
163 u16 l3_cache_handle;
164 u8 serial_number;
165 u8 asset_tag;
166 u8 part_number;
167 u8 core_count;
168 u8 core_enabled;
169 u8 thread_count;
170 u16 processor_characteristics;
171 u16 processor_family2;
172 u16 core_count2;
173 u16 core_enabled2;
174 u16 thread_count2;
175 char eos[SMBIOS_STRUCT_EOS_BYTES];
176 };
177
178 struct __packed smbios_type32 {
179 u8 type;
180 u8 length;
181 u16 handle;
182 u8 reserved[6];
183 u8 boot_status;
184 u8 eos[SMBIOS_STRUCT_EOS_BYTES];
185 };
186
187 struct __packed smbios_type127 {
188 u8 type;
189 u8 length;
190 u16 handle;
191 u8 eos[SMBIOS_STRUCT_EOS_BYTES];
192 };
193
194 struct __packed smbios_header {
195 u8 type;
196 u8 length;
197 u16 handle;
198 };
199
200 /**
201 * fill_smbios_header() - Fill the header of an SMBIOS table
202 *
203 * This fills the header of an SMBIOS table structure.
204 *
205 * @table: start address of the structure
206 * @type: the type of structure
207 * @length: the length of the formatted area of the structure
208 * @handle: the structure's handle, a unique 16-bit number
209 */
fill_smbios_header(void * table,int type,int length,int handle)210 static inline void fill_smbios_header(void *table, int type,
211 int length, int handle)
212 {
213 struct smbios_header *header = table;
214
215 header->type = type;
216 header->length = length - SMBIOS_STRUCT_EOS_BYTES;
217 header->handle = handle;
218 }
219
220 /**
221 * Function prototype to write a specific type of SMBIOS structure
222 *
223 * @addr: start address to write the structure
224 * @handle: the structure's handle, a unique 16-bit number
225 * @return: size of the structure
226 */
227 typedef int (*smbios_write_type)(ulong *addr, int handle);
228
229 /**
230 * write_smbios_table() - Write SMBIOS table
231 *
232 * This writes SMBIOS table at a given address.
233 *
234 * @addr: start address to write SMBIOS table. If this is not
235 * 16-byte-aligned then it will be aligned before the table is written
236 * @return: end address of SMBIOS table (and start address for next entry)
237 */
238 ulong write_smbios_table(ulong addr);
239
240 #endif /* _SMBIOS_H_ */
241