Vulkan on the CM3

#1

Hiya, I’m trying to get Vulkan (or “Vk” will do!) to work on the CM3 (Lavapipe is great, but too slow).

As I understand it, there are two options:

  1. ARM’s closed blob - libmali.so? Not to be found anywhere on the internet (except an old version for Odroid - https://developer.arm.com/downloads/-/mali-drivers/user-space) What I did find after lots of digging seemed to have GL but not VK.

  2. Panfrost/PanVK - build yourself using Mesa, but not “official” (Panfrost is, PanVK isn’t - https://github.com/Mesa3D/mesa/tree/main/src/panfrost/vulkan).

#1 requires the open source bifrost_kbase kernel module, #2 requires the panfrost one. Is that right?

Apparently the kernel support needs a 5.10+ kernel: I found this radxa image that’s got everything:

radxa-build/radxa-cm3-io/releases/tag/b23

(… which has been superceded by “b24” a couple of hours ago I see)

This has kernel modules for bifrost_kbase and panfrost. So I thought I’d start by removing bifrost and running panfrost, but when I set up the modules the way I think this should work (remove the bifrost module, comment out the blacklist entries, depmod -a) it stops the OS from booting.

Any thoughts? Anyone got Vulkan or a “Vk” going on any Rockchip board anywhere? You can ship me the ARM blob using my secret email address if you want.

Duncan

#2

Hi, @RadxaYuntian - I see you’ve replied to a similar question recently - do you have any thoughts? :smiley:

I’m building my own image today, so I’ll see if that helps.

Cheers!
Duncan

#3

Currently Rockchip does not support Vulkan on Linux. I think it is only supported in Android.

Running panfrost on our system is also a to-do item for me. Right now it will break the boot process.

#4

Anything I can do to help? I find the OS crashes at init_module() on modprobe panfrost

#5

Probably compare our kernel config with Armbian legacy kernel config. I vaguely recall they were using panfrost with Rockchip kernel.

#6

Hi again @RadxaYuntian
I would like to reproduce the b24 build - could you tell me any of: the repos, branches, tags, commits, DTSs, .configs, etc, etc - anything you can tell me that would get me going building it myself?
Thanks so much.
Duncan

#7

You should follow this page.

It is NOT an easy task since you will need to manually pin every packages to the same version (specified in /etc/radxa_apt_snapshot) when B24 was created. Since it is very intensive I did not follow the tutorial to make sure everything is correct.

#8

OK, thanks very much, I’ll read that page - I hadn’t seen it before. Very useful, thanks!
Duncan