Leah Rowe 6f7525a5b3 cache coreboot builds in elf/ again
This was a problem when I did it before, because individual
target builds weren't automatically re-compiled when needed.

The recent design improvements in lbmk enable this to be
done again.

Cached images in elf/ have no payloads, so they are a liability,
therefore they are padded by one byte to prevent flashing. This
solves the problem that the previous caching had.

With this change, modifying payloads can be tested without
needing to re-build coreboot each time.

The cached coreboot builds are also automatically re-built when
needed, which is another improvement this time, compared to
the last time coreboot builds were cached in this manner.

Signed-off-by: Leah Rowe <leah@libreboot.org>
2025-07-10 04:26:31 +01:00
2021-05-18 13:56:12 +01:00
2025-05-26 13:33:56 +01:00

Libreboot

Documentation: libreboot.org
Support: #libreboot on Libera IRC

Libreboot provides libre boot firmware on supported motherboards. It replaces proprietary vendor BIOS/UEFI implementations, by

  • Using coreboot to initialize the hardware (e.g. memory controller, CPU, etc.) while minimizing unwanted functionality (e.g. backdoors such as the Intel Management Engine)
  • ... which runs a payload such as SeaBIOS, GRUB, or U-Boot
  • ... which loads your operating system's boot loader (BSD and Linux-based systems are supported).

Why use Libreboot, and what is coreboot?

A lot of users who use libre operating systems still use proprietary boot firmware, which often contain backdoors and bugs, hampering user freedom and right to repair.

coreboot provides libre boot firmware by initializing the hardware then running a payload. However, coreboot is notoriously difficult to configure and install for most non-technical users, requiring detailed technical knowledge of hardware.

Libreboot solves this by being a coreboot distribution (in the same way that Alpine Linux is a Linux distribution). It provides a fully automated build system that downloads and compiles pre-configured ROM images for supported motherboards, so end-users could easily fetch images to flash onto their devices.

Libreboot also produces documentation aimed at non-technical users and excellent user support via IRC.

Contribute

You can check bugs listed on the bug tracker.

You may use Codeberg pull requests to send patches with bug fixes or other improvements. This repository hosts the code for the main build system. The website lives in a separate repository.

Development is also done on the IRC channel.

License for this README

It's just a README file. It is released under Creative Commons Zero, version 1.0.

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