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In computing, firmware is software that provides low-level control of computing device hardware. For a relatively simple device, firmware may perform all control, monitoring and data manipulation functionality. For a more complex device, firmware may provide relatively low-level control as well as hardware abstraction services to higher-level ...
In computing, BIOS ( / ˈbaɪɒs, - oʊs /, BY-oss, -ohss; Basic Input/Output System, also known as the System BIOS, ROM BIOS, BIOS ROM or PC BIOS) is firmware used to provide runtime services for operating systems and programs and to perform hardware initialization during the booting process (power-on startup). [ 1]
Libreboot (briefly known as GNU Libreboot[ 3][ 4]) is a free software project based on coreboot, aimed at replacing some of the proprietary BIOS firmware contained in some computers, though does require certain vendor code on some platforms as that code may not have been replaced with libre software. Libreboot is a lightweight system designed ...
They can use different I/O protocols, but SPI is the most common. Unified Extensible Firmware Interface ( UEFI, / ˈjuːɪfaɪ / or as an acronym) [ b] is a specification that defines the architecture of the platform firmware used for booting the computer hardware and its interface for interaction with the operating system.
Open Firmware is a standard defining the interfaces of a computer firmware system, formerly endorsed by the Institute of Electrical and Electronics Engineers (IEEE). It originated at Sun Microsystems where it was known as OpenBoot , and has been used by multiple vendors including Sun , Apple , IBM and ARM .
The Intel Management Engine ( ME ), also known as the Intel Manageability Engine, [ 1][ 2] is an autonomous subsystem that has been incorporated in virtually all of Intel 's processor chipsets since 2008. [ 1][ 3][ 4] It is located in the Platform Controller Hub of modern Intel motherboards . The Intel Management Engine always runs as long as ...
The Windows Boot Manager ( BOOTMGR) is the bootloader provided by Microsoft for Windows NT versions starting with Windows Vista and Windows Server 2008. It is the first program launched by the BIOS or UEFI of the computer and is responsible for loading the rest of Windows. [ 1] It replaced the NTLDR present in older versions of Windows.
OpenBIOS. OpenBIOS is a project aiming to provide free and open source implementations of Open Firmware. It is also the name of such an implementation. Most of the implementations provided by OpenBIOS rely on additional lower-level firmware for hardware initialization, such as coreboot or Das U-Boot .