#symbiflow on 2019-08-27 — irc logs at freenode.irclog.whitequark.org

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16:18 <sf-slack2> <nikolaus.luhrs> I'm confused on how to instantiate a PLL from verilog (or any dedicated hardware block for that matter) when using project Project Trellis.

16:19 <daveshah> nikolaus.luhrs: have a look at the ecppll tool

16:23 <sf-slack2> <nikolaus.luhrs> Ahhhhh ok, that makes sense.

16:24 <sf-slack2> <nikolaus.luhrs> I suppose there wouldn't be a good way to standardize that across fpga families anyway

16:25 <daveshah> No, usually there is some similarity between vendors (n.b. ice40 and ecp5 are effectively different vendors) but not beyond that

16:42 <sf-slack2> <nikolaus.luhrs> Project x-ray hasn't really gotten to PLLs yet right? I guess I'd like to see tools for blocks like this kept as similar as possible across vendors. That way portability of work would be maximized.

16:53 <hackerfoo> nikolaus.luhrs: Not yet: https://github.com/SymbiFlow/prjxray/issues/995

16:53 <tpb> Title: Create PLLE2_ADV minitest · Issue #995 · SymbiFlow/prjxray · GitHub (at github.com)

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17:08 <jiapei100> Hello everyone...

17:24 <hackerfoo> jiapei100: Hi

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18:23 <jiapei100> Hello... 🌹🌹🌹

18:23 <jiapei100> My FIRST time .... Thanks for the open source .... ❤❤❤

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18:35 <LongerVision> Hello

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20:07 <hackerfoo> Hi LongerVision

20:12 <hackerfoo> jiapei100: Symbiflow is a collaborative effort... are you interested in contributing?

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20:13 <jiapei100> How I wish I have the FPGA capability...👌👌👌

20:14 <jiapei100> no mattee what... if I can comtribute JUST a little bit, I'd love to contribute ✌✌

20:15 <hackerfoo> jiapei100: Are you also LongerVision? https://github.com/LongerVision

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20:15 <tpb> Title: Longer Vision Technology · GitHub (at github.com)

20:19 <jiapei100> yup... Both are me...

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20:54 <hackerfoo> jiapei100: Here's a list of good starter issues: https://github.com/issues?utf8=%E2%9C%93&q=is%3Aopen+is%3Aissue+user%3ASymbiflow+label%3A%22good+first+issue%22

21:01 <hackerfoo> jiapei100: Let me know if there is something you are interested in working on, and I can help you get started. A good starting point is downloading and setting up https://github.com/SymbiFlow/symbiflow-arch-defs and noting any problems that you have in the process.

21:01 <tpb> Title: GitHub - SymbiFlow/symbiflow-arch-defs: FOSS architecture definitions of FPGA hardware useful for doing PnR device generation. (at github.com)

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21:28 <LongerVision> ok... it's me ... back again...

21:30 <hackerfoo> LongerVision: Did you get my previous messages?

21:30 <hackerfoo> jiapei100: Here's a list of good starter issues: https://github.com/issues?utf8=%E2%9C%93&q=is%3Aopen+is%3Aissue+user%3ASymbiflow+label%3A%22good+first+issue%22

21:30 <hackerfoo> Let me know if there is something you are interested in working on, and I can help you get started. A good starting point is downloading and setting up https://github.com/SymbiFlow/symbiflow-arch-defs and noting any problems that you have in the process.

21:30 <tpb> Title: GitHub - SymbiFlow/symbiflow-arch-defs: FOSS architecture definitions of FPGA hardware useful for doing PnR device generation. (at github.com)

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21:39 <LongerVision> @hackerfoo Thank you very much... check it out ALREADY... Trying to catch up ASAP...

21:39 <hackerfoo> LongerVision: Please let me know if you would like me to explain any of the documentation. It would be nice to have translations for others.

21:40 <LongerVision> @hackerfoo you are NOT a robot, aren't you? ^_^

21:40 <hackerfoo> LongerVision: No, but it is not the first time I've been asked that :)

21:42 <LongerVision> ^_^ How big is your team? Looks like you've used so many languages... ^_^

21:42 <LongerVision> BTW, you know RISC-V? What's your plan to compete against it?

21:42 <hackerfoo> This is me: http://hackerfoo.com/about.html

21:42 <tpb> Title: HackerFoo Writes Stuff Here - About (at hackerfoo.com)

21:45 <sorear> symbiflow and riscv are complementary, not competitors, and many of us work on both

21:45 <hackerfoo> LongerVision: RISC-V is great. Symbiflow is about FPGAs, though. You can implement RISC-V on an FPGA: https://github.com/cliffordwolf/picorv32

21:46 <tpb> Title: GitHub - cliffordwolf/picorv32: PicoRV32 - A Size-Optimized RISC-V CPU (at github.com)

21:46 <hackerfoo> LongerVision: https://github.com/orgs/SymbiFlow/people

21:46 <tpb> Title: People · SymbiFlow · GitHub (at github.com)

21:48 <hackerfoo> There's about 10 active contributors.

21:49 <LongerVision> https://github.com/cliffordwolf/picorv32 ALREADY focked... But, do I need a particular board for that???

21:49 <tpb> Title: GitHub - cliffordwolf/picorv32: PicoRV32 - A Size-Optimized RISC-V CPU (at github.com)

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21:53 <sorear> people have gotten it working on a bunch of different boards, even on ASIC

21:54 <LongerVision> BTW， what's the relationship between IRC and SLACK? It looks these two have som similarities....

22:00 <hackerfoo> LongerVision: What boards do you have?

22:01 <hackerfoo> We have a Slack mirror: https://symbiflow.slack.com/

22:02 <hackerfoo> You can use either one.

22:03 <hackerfoo> https://github.com/SymbiFlow/symbiflow-arch-defs/tree/master/tests/9-soc/picosoc

22:03 <tpb> Title: symbiflow-arch-defs/tests/9-soc/picosoc at master · SymbiFlow/symbiflow-arch-defs · GitHub (at github.com)

22:05 <hackerfoo> We are working on getting Linux running on a LiteX generated SoC: https://github.com/orgs/SymbiFlow/projects/17#card-24595720

22:05 <tpb> Title: LiteX/Linux on Arty - Burndown · GitHub (at github.com)

22:05 <hackerfoo> https://github.com/enjoy-digital/litex

22:05 <tpb> Title: GitHub - enjoy-digital/litex: Build your hardware, easily! (at github.com)

22:06 <hackerfoo> LiteX includes RISC-V cores.

22:37 <LongerVision> I‘ve got a HiFive1 Rev B01, which is an AVR, it does NOT support Linux....

22:43 <sorear> what about it? it’s not a fpga

22:47 <LongerVision> It is NOT... It seems SiFive can design your own chip based on FPGA online ....

22:47 <LongerVision> https://scs.sifive.com/core-designer/

22:47 <tpb> Title: Design - SiFive (at scs.sifive.com)

22:48 <LongerVision> I cannot afford that HiFive Unleashed, so expensive....

22:49 <LongerVision> HiFive1 Rev B is an MCU core, which is much cheaper

22:51 <sorear> much smaller chip on an older node

22:53 <LongerVision> So, if I want to test this symbiflow, which low-cost board do you recommend?

22:53 <LongerVision> LiteX also supports RISC-V

22:56 <sorear> I don’t know why you keep bringing up RISC-V and SiFive

22:58 <LongerVision> Sorry ... I'm for sure NOT advertising for them...

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23:22 <hackerfoo> LongerVision: If you are interested in RISC-V, you might look for the Sipeed MAix locally: https://www.seeedstudio.com/sipeed

23:22 <tpb> Title: Sipeed MAIX: RISC-V AI Dev Boards and Peripherals (at www.seeedstudio.com)

23:23 <hackerfoo> But if you're interested in working on Symbiflow, I suggest getting a BASYS 3.

23:24 <hackerfoo> That is what we develop on.

23:25 <hackerfoo> That said, you can still contribute without a board. You'll just need a Linux computer and Vivado 2017.2

23:28 <LongerVision> Does Vivado requires a license?

23:33 <hackerfoo> Not for the free (WebPACK) version.

23:34 <hackerfoo> That's all you need.

23:35 <hackerfoo> LongerVision: I also suggest reading https://www.rapidwright.io/docs/FPGA_Architecture.html and https://www.rapidwright.io/docs/Xilinx_Architecture.html

23:35 <tpb> Title: FPGA Architecture Basics RapidWright 2019.1.1-beta documentation (at www.rapidwright.io)

23:37 <LongerVision> Thank you so so so much 👌👌👌

23:37 <LongerVision> sipeed? wow... that is a ShenZhen company 👍👍

23:41 <hackerfoo> Yes. I believe seeedstudio is also in ShenZhen.

23:43 <hackerfoo> You also should be able to find Artix7 boards locally, if not the BASYS 3.

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