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In computing, the System Management BIOS (SMBIOS) specification defines data structures (and access methods) that can be used to read management information produced by the BIOS of a computer. [1] This eliminates the need for the operating system to probe hardware directly to discover what devices are present in the computer.
BIOS Boot Specification: 1.01 [2] 1996/01 BIOS Enhanced Disk Drive Specification (INT 13H) 3.0 [3] 1998/04/20 Bluetooth: 5.0 2010/06/30 Boot Integrity Services API 1.0 [4] 1998/12/28 BTX Chassis Design Guidelines 1.1 2007/02 BTX Interface Specification 1.0b 2005/07 BTX System Design Guide 1.1 2007/02/20 Chassis Air Guide (CAG) 1.1 2003/09 ...
DMI exposes system data (including the System Management BIOS (SMBIOS) data) to management software, but the two specifications function independently. DMI is commonly confused with SMBIOS, which was actually called DMIBIOS in its first revisions.
dmidecode is a free userspace command-line utility for Linux that can parse the SMBIOS data. [2] [3] The name dmidecode is derived from Desktop Management Interface, a related standard with which dmidecode originally interfaced. SMBIOS was originally named DMIBIOS.
There are 28 CIM profiles supported in the DASH 1.1 specification. 9 new profiles were added and 4 profiles were updated in DASH 1.2 specifications. DASH uses the DMTF's Web Services for Management (WS-Management) protocol for communication of CIM objects and services. The web services expose a common set of operations for system management:
System Management Mode (SMM, sometimes called ring −2 in reference to protection rings) [1] [2] is an operating mode of x86 central processor units (CPUs) in which all normal execution, including the operating system, is suspended.
The BIOS Boot Specification requires that option ROMs be aligned to 2 kB boundaries (e.g. segments C8000h, C8800h, C9000h, C9800h, etc.). The first two bytes of the ROM must be 55 AA. [4] The third byte indicates the ROM size in 512-bytes blocks (e.g. 20h for 16kB ROM). And the fourth byte is where the BIOS begins execution of the option ROM to ...
Specification document by AMD (2008) ThomasNet – General Software, Inc. First BIOS Provider to Support AMD Barcelona; coreboot – LinuxBIOS Enablement Strategy @AMD & AGESA Info (PDF) AGESA source code Link to AGESA source code in coreboot. The repository history contains AGESA source code for previously-supported platforms.