Rocket Chip架构详解：64位RISC-V处理器的创新特性与设计 - CSDN文库

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The Rocket Chip Generator

Krste Asanovi´c, Rimas Aviˇzienis, Jonathan Bachrach, Scott Beamer, David Biancolin,

Christopher Celio, Henry Cook, Palmer Dabbelt, John Hauser, Adam Izraelevitz,

Sagar Karandikar, Benjamin Keller, Donggyu Kim, John Koenig, Yunsup Lee, Eric Love,

Martin Maas, Albert Magyar, Howard Mao, Miquel Moreto, Albert Ou, David Patterson,

Brian Richards, Colin Schmidt, Stephen Twigg, Huy Vo, Andrew Waterman

Electrical Engineering & Computer Sciences Department

University of California

Berkeley, California

April 15, 2016

Abstract

Rocket Chip is an open-source Sysem-on-Chip design generator that emits synthesizable

RTL. It leverages the Chisel hardware construction language to compose a library of sophis-

ticated generators for cores, caches, and interconnects into an integrated SoC. Rocket Chip

generates general-purpose processor cores that use the open RISC-V ISA, and provides both

an in-order core generator (Rocket) and an out-of-order core generator (BOOM). For SoC de-

signers interested in utilizing heterogeneous specialization for added eﬃciency gains, Rocket

Chip supports the integration of custom accelerators in the form of instruction set extensions,

coprocessors, or fully independent novel cores. Rocket Chip has been taped out (manufactured)

eleven times, and yielded functional silicon prototypes capable of booting Linux.

1 Introduction

Systems-on-chip (SoC) leverage integration and customization to deliver improved eﬃciency. Rocket

Chip is an open-source SoC generator developed at UC Berkeley suitable for research and industrial

purposes. Rather than being a single instance of an SoC design, Rocket Chip is a design generator,

capable of producing many design instances from a single high-level source. It produces design

instances consisting of synthesizable RTL, and multiple functional silicon prototypes have been

manufactured. Extensive parameterization makes it ﬂexible, enabling easy customization for a

particular application. By changing a single conﬁguration, a user can generate SoCs ranging in

size from embedded microcontrollers to multi-core server chips. Rocket Chip is open-source and

available under a BSD license on Github

1

. For increased modularity, many of the component

libraries of Rocket Chip are available as independent repositories, and we use git submodules to

track compatible versions. Rocket Chip is stable enough to produce working silicon prototypes,

and we continue to expand the space of designs it can express with new functionality. This report

brieﬂy catalogues the Rocket Chip features available as of April 2016.

1

https://github.com/ucb-bar/rocket-chip

1

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