VexiiRiscv

VexiiRiscv (Vex2Risc5) is the successor of VexRiscv. Work in progress, here are its currently implemented features :

• RV32/64 I[M][A][F][D][C][S][U][B]
• Up to 5.24 coremark/Mhz 2.50 dhystone/Mhz (WIP)
• In-order execution
• early [late-alu]
• single/dual issue (can be asymmetric)
• BTB, GShare, RAS branch prediction
• cacheless fetch/load/store, I$, D$ (WIP)
• optional SV32/SV39 MMU
• Can run linux / buildroot
• Pipeline visualisation in simulation via Konata
• Lock step simulation via RVLS and Spike

Overall the goal is to have a design which can stretch (through configuration) from Cortex M0 up to a Cortex A53 and potentialy beyond.

Here is the online documentation :

• https://spinalhdl.github.io/VexiiRiscv-RTD/master/VexiiRiscv/Introduction/#
• https://spinalhdl.github.io/VexiiRiscv-RTD/master/VexiiRiscv/HowToUse/index.html

A roadmap is available here :

• https://github.com/SpinalHDL/VexiiRiscv/issues/1