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/*
* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
*
* Adapted from coreboot src/include/smbios.h
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _SMBIOS_H_
#define _SMBIOS_H_
/* SMBIOS spec version implemented */
#define SMBIOS_MAJOR_VER 3
#define SMBIOS_MINOR_VER 0
/* SMBIOS structure types */
enum {
SMBIOS_BIOS_INFORMATION = 0,
SMBIOS_SYSTEM_INFORMATION = 1,
SMBIOS_BOARD_INFORMATION = 2,
SMBIOS_SYSTEM_ENCLOSURE = 3,
SMBIOS_PROCESSOR_INFORMATION = 4,
SMBIOS_CACHE_INFORMATION = 7,
SMBIOS_SYSTEM_SLOTS = 9,
SMBIOS_PHYS_MEMORY_ARRAY = 16,
SMBIOS_MEMORY_DEVICE = 17,
SMBIOS_MEMORY_ARRAY_MAPPED_ADDRESS = 19,
SMBIOS_SYSTEM_BOOT_INFORMATION = 32,
SMBIOS_END_OF_TABLE = 127
};
#define SMBIOS_INTERMEDIATE_OFFSET 16
#define SMBIOS_STRUCT_EOS_BYTES 2
struct __packed smbios_entry {
u8 anchor[4];
u8 checksum;
u8 length;
u8 major_ver;
u8 minor_ver;
u16 max_struct_size;
u8 entry_point_rev;
u8 formatted_area[5];
u8 intermediate_anchor[5];
u8 intermediate_checksum;
u16 struct_table_length;
u32 struct_table_address;
u16 struct_count;
u8 bcd_rev;
};
/* BIOS characteristics */
#define BIOS_CHARACTERISTICS_PCI_SUPPORTED (1 << 7)
#define BIOS_CHARACTERISTICS_UPGRADEABLE (1 << 11)
#define BIOS_CHARACTERISTICS_SELECTABLE_BOOT (1 << 16)
#define BIOS_CHARACTERISTICS_EXT1_ACPI (1 << 0)
#define BIOS_CHARACTERISTICS_EXT2_TARGET (1 << 2)
struct __packed smbios_type0 {
u8 type;
u8 length;
u16 handle;
u8 vendor;
u8 bios_ver;
u16 bios_start_segment;
u8 bios_release_date;
u8 bios_rom_size;
u64 bios_characteristics;
u8 bios_characteristics_ext1;
u8 bios_characteristics_ext2;
u8 bios_major_release;
u8 bios_minor_release;
u8 ec_major_release;
u8 ec_minor_release;
char eos[SMBIOS_STRUCT_EOS_BYTES];
};
struct __packed smbios_type1 {
u8 type;
u8 length;
u16 handle;
u8 manufacturer;
u8 product_name;
u8 version;
u8 serial_number;
u8 uuid[16];
u8 wakeup_type;
u8 sku_number;
u8 family;
char eos[SMBIOS_STRUCT_EOS_BYTES];
};
#define SMBIOS_BOARD_FEATURE_HOSTING (1 << 0)
#define SMBIOS_BOARD_MOTHERBOARD 10
struct __packed smbios_type2 {
u8 type;
u8 length;
u16 handle;
u8 manufacturer;
u8 product_name;
u8 version;
u8 serial_number;
u8 asset_tag_number;
u8 feature_flags;
u8 chassis_location;
u16 chassis_handle;
u8 board_type;
char eos[SMBIOS_STRUCT_EOS_BYTES];
};
#define SMBIOS_ENCLOSURE_DESKTOP 3
#define SMBIOS_STATE_SAFE 3
#define SMBIOS_SECURITY_NONE 3
struct __packed smbios_type3 {
u8 type;
u8 length;
u16 handle;
u8 manufacturer;
u8 chassis_type;
u8 version;
u8 serial_number;
u8 asset_tag_number;
u8 bootup_state;
u8 power_supply_state;
u8 thermal_state;
u8 security_status;
u32 oem_defined;
u8 height;
u8 number_of_power_cords;
u8 element_count;
u8 element_record_length;
char eos[SMBIOS_STRUCT_EOS_BYTES];
};
#define SMBIOS_PROCESSOR_TYPE_CENTRAL 3
#define SMBIOS_PROCESSOR_STATUS_ENABLED 1
#define SMBIOS_PROCESSOR_UPGRADE_NONE 6
#define SMBIOS_PROCESSOR_FAMILY_OTHER 1
#define SMBIOS_PROCESSOR_FAMILY_UNKNOWN 2
struct __packed smbios_type4 {
u8 type;
u8 length;
u16 handle;
u8 socket_designation;
u8 processor_type;
u8 processor_family;
u8 processor_manufacturer;
u32 processor_id[2];
u8 processor_version;
u8 voltage;
u16 external_clock;
u16 max_speed;
u16 current_speed;
u8 status;
u8 processor_upgrade;
u16 l1_cache_handle;
u16 l2_cache_handle;
u16 l3_cache_handle;
u8 serial_number;
u8 asset_tag;
u8 part_number;
u8 core_count;
u8 core_enabled;
u8 thread_count;
u16 processor_characteristics;
u16 processor_family2;
u16 core_count2;
u16 core_enabled2;
u16 thread_count2;
char eos[SMBIOS_STRUCT_EOS_BYTES];
};
struct __packed smbios_type32 {
u8 type;
u8 length;
u16 handle;
u8 reserved[6];
u8 boot_status;
u8 eos[SMBIOS_STRUCT_EOS_BYTES];
};
struct __packed smbios_type127 {
u8 type;
u8 length;
u16 handle;
u8 eos[SMBIOS_STRUCT_EOS_BYTES];
};
struct __packed smbios_header {
u8 type;
u8 length;
u16 handle;
};
/**
* fill_smbios_header() - Fill the header of an SMBIOS table
*
* This fills the header of an SMBIOS table structure.
*
* @table: start address of the structure
* @type: the type of structure
* @length: the length of the formatted area of the structure
* @handle: the structure's handle, a unique 16-bit number
*/
static inline void fill_smbios_header(void *table, int type,
int length, int handle)
{
struct smbios_header *header = table;
header->type = type;
header->length = length - SMBIOS_STRUCT_EOS_BYTES;
header->handle = handle;
}
/**
* Function prototype to write a specific type of SMBIOS structure
*
* @addr: start address to write the structure
* @handle: the structure's handle, a unique 16-bit number
* @return: size of the structure
*/
typedef int (*smbios_write_type)(uintptr_t *addr, int handle);
/**
* write_smbios_table() - Write SMBIOS table
*
* This writes SMBIOS table at a given address.
*
* @addr: start address to write SMBIOS table
* @return: end address of SMBIOS table
*/
uintptr_t write_smbios_table(uintptr_t addr);
#endif /* _SMBIOS_H_ */
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