| 8 Apr 2025 |
 cbobrobison | Is anyone here interested in Nix x RISC-V TEEs? Like Keystone, SPEAR-V, or Penglai?
- https://tinyurl.com/riskvtee
- https://tinyurl.com/spearv
- https://tinyurl.com/penglaitee
| 01:07:58 |
|  Michal joined the room. | 19:05:27 |
| Michal | How is NixOS with the VisionFive2 currently? Just had it arrive earlier today and was thinking of NixOS-ing it :) | 19:07:00 |
 Tristan Ross | It's okay | 19:11:53 |
| Tristan Ross | RISC-V right now isn't as stable | 19:12:03 |
| Tristan Ross | Even the new P550 has issues so don't expect there to not be any problems | 19:12:28 |
| Tristan Ross | It boots at least | 19:12:33 |
| Michal | Right, of course, I meant in terms of RISC-V :) stable in my eyes means I can get it to boot, and maybe boot a second time haha | 19:12:38 |
| Tristan Ross | Yeah, NVME boot doesn't work when I've tried | 19:13:04 |
| Tristan Ross | I've got an odd problem where the DMA for the NIC driver fails to initialize so I get random network disconnects when the RX starts receiving too much. | 19:13:52 |
| Michal | Hm interesting thing to look out for then, I'm going to be using SD boot regardless so hopefully I don't have too many issues | 19:15:55 |
| Tristan Ross | SD boot is okay but not as performant | 19:17:06 |
| Tristan Ross | Even with the JH7110's lack of performance, it probably doesn't help lol | 19:17:30 |
| Michal | Yeah, wouldn't expect it to be crazy, can it boot from an EMMC module fine-ish? I do recall seeing space for one when putting the case on it | 19:18:19 |
| Tristan Ross | 🤷♂️ | 19:18:32 |
| Tristan Ross | Idk | 19:18:38 |
| Michal | Well I suppose there'll be some fun edge cases for me to test once I get my hands on one of those | 19:18:53 |
| Tristan Ross | Yeah, the RISC-V world is interesting lol | 19:19:16 |
| Michal | Yeah haha, feels a lot more like booting up a game you've never played with the whole feeling of "well, let's see what works!" rather than the usual tried-and-tested stuff with x86 and even ARM nowadays | 19:21:34 |
| Tristan Ross | So RISC-V is supposed to be easier than ARM with the standards but things need to bake more lol. | 19:27:02 |
| Michal | Yeah, it definitely still feels like early days of the architecture, but then again, about a decade or so ago ARM was kinda in the same space | 19:27:43 |
 Alex | In reply to @rosscomputerguy:matrix.org
Yeah, NVME boot doesn't work when I've tried NVMe boot is possible, a few of us have it working (I needed to customise the u-boot rules, can't remember what I changed). | 19:45:37 |
| Alex | In reply to @michal:tar.black
Yeah, wouldn't expect it to be crazy, can it boot from an EMMC module fine-ish? I do recall seeing space for one when putting the case on it Yes, it can. | 19:45:49 |
| Tristan Ross | In reply to @alex:tunstall.xyz
NVMe boot is possible, a few of us have it working (I needed to customise the u-boot rules, can't remember what I changed). The problem I have is the initrd cannot find the NVME despite having the drivers | 19:46:14 |
| Tristan Ross | https://github.com/NixOS/nixos-hardware/issues/1347#issue-2812099176 | 19:49:03 |
| Tristan Ross | * https://github.com/NixOS/nixos-hardware/issues/1347 | 19:49:10 |
| Alex | In reply to @michal:tar.black
How is NixOS with the VisionFive2 currently? Just had it arrive earlier today and was thinking of NixOS-ing it :) It works. I haven't been able to get uptimes beyond 2 weeks, but that might just be overheating (thermal throttling is broken in the kernels I use).
Don't expect great performance. And don't expect to be able to get perfectly working HDMI (maybe just a kernel issue?). | 19:49:16 |
| Michal | Yes, afaik HDMI is one of the only things left to merge into the mainline kernel from what I've read | 19:49:46 |
| Alex | I've tried the module from an older version of the patches and it didn't properly work. Even the vendor image would sometimes change the screen colours suddenly. | 19:51:26 |
| 9 Apr 2025 |
 dramforever | Tristan Ross: have you tried the "generic-extlinux-compatible" boot for nvme? it seems to be a devicetree problem | 02:50:06 |
