RISC-V is no guarantee that the CPU is open source. RISC-V is only an open source ISA. Implementations of it could be proprietary or open source. Some could hav

RISC-V is no guarantee that the CPU is open source. RISC-V is only an open source ISA. Implementations of it could be proprietary or open source. Some could have firmware blobs. Some of the RISC-V ISA details are final and some are not. Check their website for the specs.