include/smbios.h

   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  */
 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_ */