How can I verify if GPU firmware was loaded on boot?

This is a follow-up to a question I asked a couple of days ago, relating to the amdgpu module not being loadable on boot after an Arch upgrade (https://unix.stackexchange.com/questions/794724/amdgpu-module-fails-to-load-after-arch-upgrade-cannot-allocate-memory) . Having read around a bit online, I suspect the issue may be that the GPU firmware is not being loaded on boot. So, I have a double-barrelled question related to this: 1) How can I verify if the firmware for my AMD GPU was loaded on boot or not? 2) If it wasn't, is it possible to load the GPU firmware manually, after boot? Is there a command for that? (I know that won't be a workable long-term solution, but it might help pinpoint where the issue is)