SMBIOS (Almost) Standalone Library

Use this library to parse SMBIOS data. Reference spec: link

Current support

We currently support SMBIOS 2 tables:

Index	Name	Version	Support
0	BIOS	30+	Partial
1	System	24+	Full
2	Processor	26-29	Partial

How to use?

First modify the file smbios.c in order to include headers containing the functions defined in stub.h.

Simply copy the folder smbios to your project, modify the file smbios.c in order to include headers containing the functions defined in stub.h.

Then you can call the startup function init_smbios_interface(smbios32_address, smbios64_address).

Pass it the address of your SMBIOS header. The pointer that doesn't belong to your system must be 0 (ignored). If you specify both, the 64-bit version will be used.

After this call, you can use every function defined in smbios_interface.h

Available functions:

    char *      get_smbios_bios_vendor();
    char *      get_smbios_bios_version();
    char *      get_smbios_bios_release_date();
        
    uint8_t *   get_smbios_bios_major_release();
    uint8_t *   get_smbios_bios_minor_release();
    uint8_t *   get_smbios_bios_embedded_controller_major_release();
    uint8_t *   get_smbios_bios_embedded_controller_minor_release();
    
    uint8_t     get_smbios_bios_not_supports_characteristics();
    uint8_t     get_smbios_bios_supports_isa();
    uint8_t     get_smbios_bios_supports_mca();
    uint8_t     get_smbios_bios_supports_pci();
    uint8_t     get_smbios_bios_supports_pnp();
    uint8_t     get_smbios_bios_supports_apm();
    uint8_t     get_smbios_bios_supports_edd();
    uint8_t     get_smbios_bios_supports_escd();
    uint8_t     get_smbios_bios_supports_eisa();
    uint8_t     get_smbios_bios_supports_vl_vesa();
    uint8_t     get_smbios_bios_supports_boot_from_cd();
    uint8_t     get_smbios_bios_supports_selectable_boot();
    uint8_t     get_smbios_bios_supports_acpi();
    uint8_t     get_smbios_bios_supports_usb_legacy();
    uint8_t     get_smbios_bios_supports_agp();
    uint8_t     get_smbios_bios_supports_bios_boot();
    uint8_t     get_smbios_bios_supports_uefi();
    uint8_t     get_smbios_bios_is_virtual_machine();
    
    char *      get_smbios_system_manufacturer();
    char *      get_smbios_system_product_name();
    char *      get_smbios_system_version();
    char *      get_smbios_system_serial_number();
    char *      get_smbios_system_sku_number();
    char *      get_smbios_system_family();
    uint8_t *   get_smbios_system_uuid();
    uint8_t *   get_smbios_system_wake_up_type();
    
    char *      get_smbios_cpu_socket_designation();
    uint8_t *   get_smbios_cpu_processor_type();
    uint8_t *   get_smbios_cpu_processor_family();
    char *      get_smbios_cpu_processor_manufacturer();
    uint64_t *  get_smbios_cpu_processor_id();
    char *      get_smbios_cpu_processor_version();
    
    uint8_t     get_smbios_cpu_voltage_legacy();
    uint8_t     get_smbios_cpu_voltage_5V();
    uint8_t     get_smbios_cpu_voltage_3_3V();
    uint8_t     get_smbios_cpu_voltage_2_9V();
    
    uint16_t *  get_smbios_cpu_external_clock();
    uint16_t *  get_smbios_cpu_max_speed();
    uint16_t *  get_smbios_cpu_current_speed();
    
    uint8_t     get_smbios_cpu_socket_populated();
    uint8_t     get_smbios_cpu_enabled();
    uint8_t     get_smbios_cpu_disabled_by_user();
    uint8_t     get_smbios_cpu_disabled_by_bios();
    uint8_t     get_smbios_cpu_idle();
    
    uint8_t *   get_smbios_cpu_processor_upgrade();
    char *      get_smbios_cpu_serial_number();
    char *      get_smbios_cpu_asset_tag();
    char *      get_smbios_cpu_part_number();
    uint8_t *   get_smbios_cpu_core_count();
    uint8_t *   get_smbios_cpu_core_enabled();
    uint8_t *   get_smbios_cpu_thread_count();
    
    uint8_t     get_smbios_cpu_supports_64_bits();
    uint8_t     get_smbios_cpu_supports_multicore();
    uint8_t     get_smbios_cpu_supports_hardware_thread();
    uint8_t     get_smbios_cpu_supports_execute_protection();
    uint8_t     get_smbios_cpu_supports_enhanced_virtualization();
    uint8_t     get_smbios_cpu_supports_power_management();
    uint8_t     get_smbios_cpu_supports_128_bits();
    uint8_t     get_smbios_cpu_is_arm_soc();
    uint16_t *  get_smbios_cpu_processor_family2(); 
    uint16_t *  get_smbios_cpu_core_count2();
    uint16_t *  get_smbios_cpu_core_enabled2();
    uint16_t *  get_smbios_cpu_thread_count2();
    uint16_t *  get_smbios_cpu_thread_enabled();

Request to improve

The interface is really easy to expand, simply:

To add a new table:

• Add the table structure in smbios.h (one table for each version)

This structure must be packed and aligned with the specification.

• Add the table index to smbios.c@process_smbios_table

• Add the interface structure in smbios_interface.h

This structure contains every useful field that the table can provide us. It contains items of two kinds of data: bitfields and pointers.

• Create the processing function process_<tablename>_information

The function discriminates between versions and populates the interface structure with the real smbios data.

• Create the access functions in smbios_interface.c and smbios_interface.h

Thoose are simple getters for the interface structure. You can use the EXTRACT macro for the bitfields.

To add a new field:

• Add the field in the respective smbios.h and smbios_interface.h structures
• Modify the process_<tablename>_information function to populate the interface structure
• Create the access functions in smbios_interface.c and smbios_interface.h

To support a new version:

Simply define the new version's structure and create a new case in the process_<tablename>_information function in order to use the right structure. This specially easy in case you want to define an older version of an already supported table.