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-d does the same as -b, except for actually building anything! in effect, it does the same as -f (fetch) except that the resulting variable assignments will not be recursive (as with -f). if -d is passed, configuration is still loaded, defconfig files are still cycled through, and more importantly: helper functions are still processed. the grub, serprog and coreboot helper functions have been modified to return early (zero status) if -d is passed. example usage: ./update trees -d coreboot x230_12mb this would download the files, NOT build coreboot, and NOT build the payloads. there is one additional benefit to doing it this way: the utils command has been removed, e.g. ./update trees -b coreboot utils default the equivalent is now: ./update trees -d coreboot default the overall effect of this change is that the trees script no longer contains any project-specific logic, except for the crossgcc build logic. it does include some config/data mkhelper files at the top, for serprog and coreboot, so that those variables defined in those files can be global, but another solution to mitigate that will also be implemented in a future commit. the purpose of this and other revisions (in the final push to complete lbmk audit 6 / cbmk audit 2) is to generalise as much logic as possible, removing various ugly hacks. Signed-off-by: Leah Rowe <leah@libreboot.org> |
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README.md
Canoeboot
Find canoeboot documentation at https://canoeboot.org/
The canoeboot project provides
libre boot
firmware that initializes the hardware (e.g. memory controller, CPU,
peripherals) on specific Intel/AMD x86 and ARM targets, which
then starts a bootloader for your operating system. Linux/BSD are
well-supported. It replaces proprietary BIOS/UEFI firmware. Help is available
via #canoeboot IRC
on Libera IRC.
Canoeboot is maintained in parallel with Libreboot, by the same developer. Strictly speaking, it is a fork of Libreboot, but with a twist:
Canoeboot is provided for the purists who absolutely wish to have no proprietary software of any kind. Regardless of any other firmware that exists outside of it, the boot flash on your system will be entirely free software if you install Canoeboot on it. That includes a complete lack of CPU microcode updates, as per FSF policy.
More specifically: Canoeboot is engineered to comply with the GNU Free System Distribution Guidelines. It has, as of November 2023 releases, been strictly audited by FSF licensing staff (Craig Topham lead the audit), and it is listed on the FSF's own Free Software Directory.
Libreboot previously complied with that same policy, but changed to a different one permitting binary blobs in limited circumstances, so as to support more newer machines. Canoeboot is, then, a continuation of the traditional Libreboot project prior to that policy change. Some users still want it, so, Canoeboot releases are rigoriously maintained, re-basing on newer Libreboot releases over time, just like how, say, Trisquel, re-bases itself on each new Ubuntu release.
Project goals
- Obviously, support as much hardware as possible (within the limitations imposed by GNU FSDG, and using what coreboot happens to have in its source tree - Canoeboot also heavily patches coreboot, sometimes adding new mainboards out-of-tree).
- Make coreboot easy to use. Coreboot is notoriously difficult to install, due to an overall lack of user-focused documentation and support. Most people will simply give up before attempting to install coreboot. Canoeboot's automated build system and user-friendly installation instructions solves this problem.
Canoeboot attempts to bridge this divide by providing a build system automating much of the coreboot image creation and customization. Secondly, the project produces documentation aimed at non-technical users. Thirdly, the project attempts to provide excellent user support via IRC.
Canoeboot already comes with a payload (GRUB), flashprog and other needed parts. Everything is fully integrated, in a way where most of the complicated steps that are otherwise required, are instead done for the user in advance.
You can download ROM images for your canoeboot system and install them without having to build anything from source. If, however, you are interested in building your own image, the build system makes it relatively easy to do so.
Not a coreboot fork!
Canoeboot is not a fork of coreboot. Every so often, the project re-bases on the latest version of coreboot, by virtue of maintaining sync with Libreboot releases (minus un-GNU parts), with the number of custom patches in use minimized. Tested, stable (static) releases are then provided in Canoeboot, based on specific coreboot revisions.
LICENSE FOR THIS README
It's just a README file. This README file is released under the terms of the Creative Commons Zero license, version 1.0 of the license, which you can read here:
https://creativecommons.org/publicdomain/zero/1.0/legalcode.txt
The documentation in Canoeboot will use a mix of other licenses, so you should check that for more information.