RISC-V processor realized based on FPGA, FPGA chip and system on chip

Abstract

The invention provides an RISC-V processor realized based on an FPGA, an FPGA chip and an on-chip system.The RISC-V processor comprises an RISC-V processor core and at least one extension module whichare configured in the same FPGA chip, and the RISC-V processor core comprises at least one general register set and at least one interface module; wherein the interface modules and the extension modules are arranged in a one-to-one correspondence manner and are connected with each other, and each interface module comprises an instruction interface, an operand interface, a data return interface, an operation request interface, a write-back request interface, a request waiting interface and an operation completion interface. According to the invention, a unified standard interface is formulatedfor the interface between the RISC-V processor core and the extension module, the coupling between the RISC-V processor core and the extension module is reduced, and the modular development and modular configuration of the RISC-V processor are realized in combination with the modular characteristic of the RISC-V instruction set and the programmable and easy-to-extend characteristics of the FPGA,the design complexity of the RISC-V processor is reduced, and the development efficiency of the RISC-V processor is improved.

Description

technical field [0001] The invention relates to the technical field of processor design, in particular to an FPGA-based RISC-V processor, an FPGA chip, and a system-on-chip. Background technique [0002] Microprocessors can be divided into two mainstreams: RISC (Reduced Instruction Set Computer, reduced instruction set computer) and CISC (Complex Instruction Set Computer, complex instruction set computer). Among them, RISC-V (Reduced Instruction Set Computer V) is an open source instruction set architecture based on the principle of reduced instruction set, and V represents the fifth generation of RISC (Reduced Instruction Set Computer). The parts can also be organized together in a modular way to meet the needs of various application scenarios. [0003] Because the RISC-V architecture has the characteristics of simple architecture, modular design, easy portability, and complete open source, anyone and any organization can freely use the RISC-V instruction set for the micro...

AI Technical Summary

Problems solved by technology

However, before the emergence of RISC-V, the FPGA soft-core ecology was mainly maintained by various FPGA manufacturers. The underlying code was not open source and isolated from each other, resulting in inability for cross-platform user designs, high processor design complexity, and low development efficiency. The problem

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