Leah Rowe 566ae72ca3 util/nvmutil: remove variable nvmPartChanged
pointless optimisation. we know that when a user requests an
operation that would write, it will probably result in a change.

therefore, this change is the real optimisation. to avoid
writing the same half of a file twice, when using cmd_copy,
we check (in writeGbe) whether gbe part 0 and 1 are the same;
if they are, then we only loop once. this is important, because
otherwise we would call swap() twice.

this means that the optimisations in cmd_copy and cmd_swap must
be removed. the point of this and other changes is to improve
memory safety in nvmutil, so frivolous use of pointers has to go.

Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-03 01:07:59 +00:00
2026-02-26 00:58:06 +00:00
2026-02-22 17:18:51 +00:00
2021-05-18 13:56:12 +01:00
2025-11-14 18:22:51 +00:00

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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