Welcome to OpenBIOS

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The OpenBIOS project provides you with most free and open source Open Firmware implementations available. Here you find several implementations of IEEE 1275-1994 (Referred to as Open Firmware) compliant firmware.

Among its features, Open Firmware provides an instruction set independent device interface. This can be used to boot the operating system from expansion cards without native initialization code.

It is Open Firmware's goal to work on all common platforms, like x86, AMD64, PowerPC, ARM, Sparc and Mips. With its flexible and modular design, Open Firmware targets servers, workstations and embedded systems, where a sane and unified firmware is a crucial design goal and reduces porting efforts noticably.

Open Firmware is found on many servers and workstations and there are several commercial implementations from SUN, Firmworks, CodeGen, Apple, IBM and others.

In most cases, the Open Firmware implementations provided on this site rely on an additional low-level firmware for hardware initialization, such as coreboot or U-Boot.


Get the latest version of OpenBIOS. See the development download page. Have a look at the Implementations section on the left side.


The easiest way to get in contact with the OpenBIOS team is to subscribe the OpenBIOS mailinglist. If you want to contribute to OpenBIOS development, you should subscribe to the mailinglist as well. See further information on the Mailinglist page.


Who are the people behind OpenBIOS? Who helped and contributed to make OpenBIOS as successful as it is today. See the growing Credits page for a (yet incomplete) list of people contributing to OpenBIOS with hardware, patches, code, hints, etc.


OpenBIOS v1.1 released (2013-05-04)

After 4 years of hard work, the OpenBIOS team are proud to announce the release of OpenBIOS 1.1. Since the last release, over 600 commits have been made to the SVN repository with a wealth of improvements and new features. As a result of these changes, the ability of OpenBIOS 1.1 to boot various kernels under QEMU has significantly improved. For more information, please visit the development page.

OpenBIOS v1.0 released (2009-03-01)

OpenBIOS v1.0 has been released. For more information, please visit the development page.

FCODE suite 1.0.2 released (2006-10-30)

David Paktor added tracing support to the OpenBIOS FCODE suite.

LinuxBIOS Symposium 2006 (2006-10-01)

The first European LinuxBIOS Symposium 2006 took place in Hamburg from October 1st to 3rd. This event was organized by coresystems GmbH.

FCODE suite 1.0.1 available (2006-09-21)

David Paktor, when he was with the IBM Corporation, contributed to the OpenBIOS FCODE suite. This release has higher test coverage, a more detailed report on one type of error, and removal of dead code and consolidation of some other code.

SUN released OpenBOOT source code (2006-09-06)

SUN microsystems has recently released their OpenBOOT source code to the community under a BSD license. Go to their OpenSparc T1 website to download the full archive (190MB) or check out our local mirror (1.7MB).

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