09:38 <_whitenotifier-c> [prjxray] acomodi opened issue #1343: Assign xc7 prefix to prjxray tools to avoid conflicts - https://git.io/JfV0b

15:21 <_whitenotifier-c> [symbiflow-arch-defs] mkurc-ant opened issue #1503: Missing IOB timings in xc7 - https://git.io/JfV16

20:14 <ric96> daveshah: ping

20:15 <daveshah> ric96: pong

20:21 <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> 1) yosys fails to initialize many non-zero wires, same as lattice?

20:21 <ric96> I had two issues:

20:21 <ric96> ```

20:21 <ric96> 3) Nextpnr Crashes at

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: 30x IBUF

20:21 <ric96> Info: Created 30 IOB33_INBUF_EN cells from:

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

20:22 <daveshah> The Yosys issue is normal with any LiteX design

20:24 <ric96> okay uploading full log in a sec, I just used the design as is from that repo and modified attosoc.sh as required

20:25 <daveshah> I am not really supporting nextpnr-xilinx at the moment, I have a load of cleanup I want to sort out first

20:26 <daveshah> So if the fix is non-trivial then it probably won't be done for a while

20:27 <ric96> yeah now worries just wanted to report

20:27 <ric96> s/now/no

20:29 <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

20:30 <daveshah> Right, it has only been tested with those

20:44 <ric96> daveshah: https://paste.ubuntu.com/p/dR55tCDhVF/ just for reference

20:44 <tpb> Title: Ubuntu Pastebin (at paste.ubuntu.com)