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| -_whitenotifier-c- [prjxray] acomodi opened issue #1343: Assign xc7 prefix to prjxray tools to avoid conflicts - https://git.io/JfV0b | 09:38 | |
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| -_whitenotifier-c- [symbiflow-arch-defs] mkurc-ant opened issue #1503: Missing IOB timings in xc7 - https://git.io/JfV16 | 15:21 | |
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| ric96 | daveshah: ping | 20:14 |
|---|---|---|
| daveshah | ric96: pong | 20:15 |
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| ric96 | daveshah: not sure if its a known issue or anyone has tried this before. I was trying to build the VexRiscV-Linux demo from here: https://github.com/SymbiFlow/symbiflow-examples/tree/master/linux_litex_demo using nextpnr-xilinx for arty-a35. | 20:21 |
| ric96 | I had two issues: | 20:21 |
| ric96 | 1) yosys fails to initialize many non-zero wires, same as lattice? | 20:21 |
| ric96 | 3) Nextpnr Crashes at | 20:21 |
| ric96 | ``` | 20:21 |
| ric96 | Info: Created 3 INVERTER cells from: | 20:21 |
| tpb | Title: symbiflow-examples/linux_litex_demo at master · SymbiFlow/symbiflow-examples · GitHub (at github.com) | 20:21 |
| ric96 | Info: 3x INV | 20:21 |
| ric96 | Info: Created 30 IOB33_INBUF_EN cells from: | 20:21 |
| ric96 | Info: 30x IBUF | 20:21 |
| ric96 | Info: Created 62 IOB33_OUTBUF cells from: | 20:21 |
| ric96 | Info: 39x OBUF | 20:21 |
| ric96 | Info: 23x OBUFT | 20:21 |
| ric96 | Info: Created 75 PAD cells from: | 20:21 |
| ric96 | Info: 75x PAD | 20:21 |
| daveshah | I have never tried that demo with nextpnr | 20:21 |
| daveshah | The Yosys issue is normal with any LiteX design | 20:22 |
| ric96 | okay uploading full log in a sec, I just used the design as is from that repo and modified attosoc.sh as required | 20:24 |
| daveshah | I am not really supporting nextpnr-xilinx at the moment, I have a load of cleanup I want to sort out first | 20:25 |
| daveshah | So if the fix is non-trivial then it probably won't be done for a while | 20:26 |
| ric96 | yeah now worries just wanted to report | 20:27 |
| ric96 | s/now/no | 20:27 |
| daveshah | FWIW, to get the Linux demo working, I reduced the clock rate in the Litex Arty target to 60MHz, removed everything but serial and ethernet from https://github.com/litex-hub/linux-on-litex-vexriscv/blob/master/make.py#L34 and used the litex build system | 20:29 |
| tpb | Title: linux-on-litex-vexriscv/make.py at master · litex-hub/linux-on-litex-vexriscv · GitHub (at github.com) | 20:29 |
| daveshah | then took the files and used a similar script | 20:29 |
| daveshah | I have never tried those particular files with nextpnr | 20:29 |
| ric96 | daveshah: demo works fine if i just use symbiflow prjxray bits | 20:29 |
| daveshah | Right, it has only been tested with those | 20:30 |
| ric96 | daveshah: https://paste.ubuntu.com/p/dR55tCDhVF/ just for reference | 20:44 |
| tpb | Title: Ubuntu Pastebin (at paste.ubuntu.com) | 20:44 |
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