Hacker News Reader

A RISC-V linux system for the ECP5 can be built with the FOSS toolchain using vexriscv and litex:

https://github.com/litex-hub/linux-on-litex-vexriscv

also, step by step using a different core (rocket): https://insights.sei.cmu.edu/sei_blog/2019/10/how-to-build-a...

I'm amazed to see the preferred toolchain for LiteX for ECP5 listed as "Yosys/Trellis/Nextpnr" (and vendor proprietary tools for the other families).

The rocket core mentions 102% of space used of an 85K LUT FPGA and having to deal with it. I wonder which core is using so much space? I have more experience with vendor soft cores, and they would use much less..

Reply on news.ycombinator.com