Following yesterday’s Linux 6.18 kernel release, GNU Linux-libre 6.18-gnu is out today as the latest release of this free software purist kernel that will drop/block drivers from loading microcode/firmware considered non-free-software and other restrictions in the name of not pushing binary blobs even when needed for hardware support/functionality on otherwise open-source drivers.
With Linux 6.18 there are more upstream kernel drivers dependent upon binary-only firmware/microcode. Among the drivers called out this cycle are the open-source NVIDIA Nova-Core Rust driver as well as the modern Intel Xe driver. Nova-Core is exclusively designed around the NVIDIA GPU System Processor (GSP) usage and thus without its firmware the driver is inoperable. Similarly, with the newer Intel Xe driver depending upon the GuC micro-controller without its firmware the support is also rendered useless.
The line is basically programmability. If a device runs “firmware” that can’t be changed, that’s really just a part of the design of the hardware you bought, so the fact that you can’t see or modify the source code is irrelevant- even if you could, it wouldn’t give you any more control over the hardware. If it runs firmware that can be changed, it’s a programmable computer, and by running proprietary firmware, you’re giving up control you would otherwise have over your computer.