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Just because it's RISC-V doesn't mean it's open source. RISC-V is an open architecture so anyone can make an implementation but those implementations can be clo
by gchadwick 6y ago
Just because it's RISC-V doesn't mean it's open source. RISC-V is an open architecture so anyone can make an implementation but those implementations can be closed source. SiFive have released some open source stuff (https://github.com/sifive/freedom https://github.com/sifive/freedom) but the majority of their work is closed source IP. In a way they're quite similar to arm.
- userbinator 6y agoJust like ARM, the only thing standard is the core and there is massive (and almost always publicly undocumented) diversity of everything else.
- brandmeyer 6y agoNot just like ARM. You don't need a license to implement a RISC-V compatible machine. IIUC, you only need to pass a compliance test to brand your machine RISC-V and use the trademark.