Ucore kernel snap size: amd gpu fw

[Sertac TULLUK]

The size of the kernel snap for UC20 is 254Mbytes (compressed) and 794Mbytes (uncompressed).

569Mbyte of this is caused by FW

40Mbyte -> amdgpu

IMO, removing unreferenced FW and/or reducing number of drivers & their FW has exponential reduction of disk space usage.

Additionally, downloaded image will be smaller; and storing 3x kernel snaps for upgrades will be smaller.

Even more, snap seeding will be faster, so boot time will be faster.

So it will be a nice gain in multiple aspects: download image, boot image, upgrade image, reboot image, start using image.

stulluk ~/tmp $ ls -lah pi-kernel_353.snap
-rw------- 1 stulluk stulluk 254M Kas 8 13:57 pi-kernel_353.snap
stulluk ~/tmp $ cd pikern/
stulluk ~/tmp/pikern $ du -sh
794M .
stulluk ~/tmp/pikern $ cd firmware/
stulluk ~/tmp/pikern/firmware $ du --block-size=MiB --max-depth=1 . | sort -rn
569MiB .
140MiB ./netronome
40MiB ./amdgpu
34MiB ./intel
25MiB ./liquidio
24MiB ./qcom
20MiB ./qed
19MiB ./brcm
12MiB ./mellanox
12MiB ./dpaa2
12MiB ./ath10k
...

[Rolf Leggewie (r0lf)]

see also bug 1958518

[Juerg Haefliger (juergh)]

For snaps this was actually fixed a while ago:
https://git.launchpad.net/~canonical-kernel-snaps/+git/kernel-snaps-uc20/commit/?id=6d91407c39bfe31caf56291ce445f0084315f2b5