Sunday, 2020-03-01

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pdp7anyone know of what instructions I could follow to try using yosys+vpr on the Arty Atrix7-35T instead of Vivado?13:44
pdp713:44
pdp7I'm hoping I could do Linux-on-LiteX-Vexriscv without Vivado13:44
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kgugala@pdp7 you have a few options here14:00
kgugalayou can grab this PR https://github.com/SymbiFlow/symbiflow-arch-defs/pull/132014:00
tpbTitle: Add Base Litex minitest capable of running Linux on Vexriscv by tmichalak · Pull Request #1320 · SymbiFlow/symbiflow-arch-defs · GitHub (at github.com)14:00
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kgugalafollow the regular arch-defs flow (clone, make env, make all_conda) and in the end go to xc7/tests/soc/litex/base and run make baselitex_arty_bin14:03
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kgugalathis will build all the required parts of the toolchain (architecture definition etc) and in the end will build the bitstream14:03
kgugalathis may take some time14:04
kgugalaand remeber to set export VPR_NUM_WORKERS=$(nproc)14:04
kgugala(this significantly speeds up the flow)14:04
kgugalathe second option is to generate the binary toolchain with "make install"14:05
kgugala"make install" is added in this PR https://github.com/SymbiFlow/symbiflow-arch-defs/pull/125214:06
tpbTitle: Add make install target by kgugala · Pull Request #1252 · SymbiFlow/symbiflow-arch-defs · GitHub (at github.com)14:06
kgugalathen you can use the binary toolchain to generate the bitstream14:06
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kgugalathere is even initial support for the binary toolchain in edalize https://github.com/SymbiFlow/edalize/tree/symbiflow14:07
tpbTitle: GitHub - SymbiFlow/edalize at symbiflow (at github.com)14:07
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pdp7@kgugala: thanks, I will try it out!15:22
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ZirconiumXThere's also experimental support in daveshah's nextpnr-xilinx15:40
daveshahI can't guarantee the VexRiscv linux still works with that (I know Rocket Linux does and VexRiscv Linux used to but I haven't tried for a while)15:42
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mithropdp7: Give us another month and then we'll have a working flow that users can play with19:24
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pdp7thanks21:52
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mithropdp7: You'll be the first person I message when it's all working  :-)23:46

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