Import the Taiga high performance RISC-V core

[mithro]

Taiga is a 32-bit RISC-V processor designed for running Linux and SMP type things on FPGAs. Taiga is licensed under the Apache License, Version 2.0

Currently the only Linux supporting RISC-V processor we have is VexRISCV. It would be good to have a second RISC-V processor which targets high performance and Linux.

See the following description;

Taiga is a 32-bit RISC-V processor designed for FPGAs supporting the Multiply/Divide and Atomic extensions (RV32IMA). The processor is written in SystemVerilog and has been designed to be both highly extensible and highly configurable.
The pipeline has been designed to support parallel, variable-latency execution units and to readily support the inclusion of new execution units.

[mithro]

FYI Here are a collection of links related to Linux on RISC-V;

• https://github.com/enjoy-digital/linux-on-litex-vexriscv
• https://github.com/antmicro/litex-linux-readme
• Linux on VexRiscv SpinalHDL/VexRiscv#60 - Linux on VexRiscv
• https://github.com/antmicro/litex-linux-riscv
• https://github.com/antmicro/litex-rv32-linux-system
• Getting started with Debian Linux on RISC-V with SymbiFlow tutorial f4pga/ideas#35
• Getting started with Buildroot Linux on RISC-V with SymbiFlow tutorial f4pga/ideas#34

[kamejoko80]

I’m interested in LiteX with multi core support. Do you have a plan or progress of it?

[mithro]

@kamejoko80 - This issue is about adding the Taiga core to LiteX rather than multicore support in general (which we plan to do using LiteX with VexRISCV multicore in 2020 -- the first step is to add multicore support to VexRISCV see SpinalHDL/VexRiscv#85 ).

[kamejoko80]

@mithro
That's great! I'm looking forward to hearing from your announcement.
Thank you.

[enjoy-digital]

There are no ongoing efforts to import/support this core and now have others RISC-V linux capable alternatives (Rocket, BlackParrot), so i'm closing but please re-open if someone is willing to put efforts into this.