coreboot

coreboot
Original authorsRonald G. Minnich, Eric Biederman, Li-Ta (Ollie) Lo, Stefan Reinauer, and the coreboot community
Initial release1999 (1999)
Stable release
25.12  / 26 December 2025 (26 December 2025)
Written inMostly C, about 1% in assembly and optionally SPARK
PlatformIA-32, x86-64, ARMv7, ARMv8, RISC-V, POWER8
TypeFirmware
LicenseGPLv2-only
Websitewww.coreboot.org 
Repository

coreboot (formerly LinuxBIOS) is an open‑source project that provides lightweight firmware to initialize hardware and then load an operating system. It is designed to replace proprietary firmware (traditional BIOS or UEFI implementations) by performing the minimal tasks required to start a modern 32-bit or 64-bit operating system.

Because coreboot performs low‑level hardware initialization, it must be ported to each supported chipset and motherboard model; consequently, availability is limited to platforms for which support has been implemented.

One of the well‑known variants of coreboot is Libreboot, a software distribution that focuses on removing proprietary binary blobs from the firmware stack.

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