Documentation is now handled by the same processes we use for code: Add something to the Documentation/ directory in the coreboot repo, and it will be rendered to https://doc.coreboot.org/. Contributions welcome!
This is work in progress!
There are a lot of (Free Software, as well as proprietary) firmware implementations available these days, which can be very confusing. This page tries to give an overview.
License: GPLv2.
This project is dead and was merged into coreboot. Use coreboot instead. License: GPLv2.
Open Firmware IEEE 1275-1994 implementation. Kernel and some modules are written in C. Large parts of the code base is written in Forth. License: GPL.
"The original" Open Firmware IEEE 1275-1994 implementation was open sourced in 2006/2007 by Mitch Bradley. License: BSD.
Open Firmware IEEE 1275-1994 implementation completely written in ANSI C. Features a C to FCode compiler.
SUN's "fork" of Open Firmware.
Very wide spread firmware, mostly used on ARM, PPC and MIPS based embedded systems, but not so much for x86 systems. Features a small shell.
Umbrella name for several firmware implementations implementing the EFI/UEFI interface.
UEFI based bootloader.