sorear changed the topic of #riscv to: RISC-V instruction set architecture | https://riscv.org | Logs: https://libera.irclog.whitequark.org/riscv
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<skyfall> I'm planning to learn risc v to get into assembly and learn a little deeper (implementing basic algorithms, data structures in assembly). Is there any simulators or emulators that you guys recommend? I'm on macOS.
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<la_mettrie> qemu is the standard choice...
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<[exa]> skyfall: there are quite useful images with running OSes that already include the basic toolchain for development, e.g. here for debian https://people.debian.org/~gio/dqib/ (comes with qemu instructions)
<mps> oh, also I wrote short guide and script how to install riscv64 in qemu on alpine linux https://arvanta.net/alpine/install-alpine-riscv64-qemu-uboot/
<mps> should find time to update it
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<courmisch> for plain assembler work, I use SPIKE and PK, much simpler than booting a whole VM
<courmisch> an alternative is user-mode QEMU
<courmisch> either way, I doubt that either of those work on macos
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<conchuod> palmer: I guess I should add my tree to linux-next JIC I break something
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<palmer> conchuod: ya, you should have your tree in linux-next
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<drmpeg> I'm seeing some weirdness with Linux 5.19-rc1 on the HiFive Unmatched. I'm getting this errata warning. https://www.w6rz.net/errata.png
<drmpeg> And I do have CONFIG_ERRATA_SIFIVE_CIP_453=y and CONFIG_ERRATA_SIFIVE_CIP_1200=y in my .config.
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<qwestion> anyone got openwrt, librecmc or other router setup working smoothly on riscv? which board and os images?
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<drmpeg> The Ethernet performance on the HiFive Unmatched isn't that great. I've never seen it do over 400 Mbps on a transfer.
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<qwestion> drmpeg: thx do 50-100 is all i have at isp
<qwestion> s/do/though
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<palmer> drmpeg: not sure where that warning is coming from, but there's been some refactoring in the Kconfigs so it might be spurious
<drmpeg> It's from arch/riscv/errata/sifive/errata.c
<palmer> oh, that's a super weird looking kernel warning...
<palmer> oh, I wonder if it's actually broken here, IIRC some stage-related stuff changed
<palmer> do you know the last good kernel version?
<drmpeg> 5.18.2 is fine.
<drmpeg> So something in the 5.19 merge window.
<palmer> OK, so at least that should be easy. I'll try and remember to take a look, but do you mind sending something to LKML?
<palmer> then other folks can see too
<drmpeg> Ok. I'll try to bisect it too.
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<conchuod> palmer: request sent :) hopefully I don't screw up my branches embarrassingly..
<palmer> conchuod: shouldn't be too bad, just don't put anything on for-next until it's ready to go
<drmpeg> palmer: I'll give it a shot. Always good to have a starting guess for bisecting.
<palmer> yep, I usually have better luck with some manual attempts first
<palmer> I can't find anything on LKML yet, so might be a new one. I asked in the Rivos slack, kind of surprised David hasn't reported it yet...
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<conchuod> Speaking of Rivos, can you get Atul to resend those dt binding patches whenever he has a chance palmer? ;)
<conchuod> Would be nice to rid ourselves of dtbs_check errors
<palmer> I asked, he's listed as away though so it might take a bit. Did he still not re-send them to the right lists?
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<conchuod> But its not threaded so b4 doesn't like it & the cc list was just lkml & stable
<palmer> ya, I pointed that out when he sent them. Not sure why he didn't resend, but I asked so we'll see
<conchuod> Ye, no rush. I sent some patches for the rest today (apart from the k210 stuff, that's a whole other can of worms)
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