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Worth mentioning SymbiFlow: https://symbiflow.github.io/ https://symbiflow.github.io/, it's a fully open-source flow for FPGAs, Xilinx support (targetting the A
by gchadwick 6y ago
Worth mentioning SymbiFlow: https://symbiflow.github.io/ https://symbiflow.github.io/, it's a fully open-source flow for FPGAs, Xilinx support (targetting the Arty A7 that the project in this story uses for instance) is on the way so hopefully won't be long until you can build a opensource RISC-V SoC that can run Linux entirely on open source tooling.
- roosterdawn 6y agoYou read my mind. This is awesome. Wonder how hard it'd be to DIY a smartphone and go from there.
- litghost 6y agoTo be clear, creating a linux capable Artix-7 image using only open source tools can be done today, right now! https://github.com/SymbiFlow/symbiflow-examples https://github.com/SymbiFlow/symbiflow-examples
- analognoise 6y agoEh, did they finally unlock all the transceivers, MMCMs, DSP48s, etc? It's super unimpressive to do a basic processor with flip flops and BRAM with a primitive simulated-annealing P&R. You're getting like... 10% of what the chip from a decade ago was capable of. BuT iTS OPeN SoUrcE! Eh. I guess. If your time is worth zero and you're willing to overpay for silicon you can't use effectively with your open tools. Webpack is gratis from Xilinx and it stomps the open source stuff, I have no idea why you'd bother.
- gchadwick 6y agoAwesome! Hadn't seen that, includes the DDR controller too which I thought may be one of the trickier parts to get going under Symbiflow.