RISC-V Software Ecosystem Overview

This document captures the status of the RISC-V Software Ecosystem. Please add to the list and fix inaccuracies.

• Simulators
• Object toolchain
• Debugging
• C compilers and libraries
• Boot loaders and monitors
• OS and OS kernels
• Compilers and runtimes for other languages
• IDEs
• Security

We would like to enlist community help for the software ports in the Help Wanted section.

Simulators

Name	Links	License	Maintainers
DBT-RISE-RISCV	github	BSD-3-Clause	MINRES Technologies
FireSim	website, mailing list, github, ISCA 2018 Paper	BSD	Sagar Karandikar, Howard Mao, Donggyu Kim, David Biancolin, Alon Amid, Berkeley Architecture Research
gem5	SW-dev thread, repository	BSD-style	Alec Roelke (University of Virginia)
Imperas	website	Proprietary, models available under Apache 2.0	Imperas
riscvOVPsim	github	license	Imperas
OVPsim	website	Free for non commercial use, models available under Apache 2.0	Imperas
jor1k	website, github	BSD 2-Clause	Sebastian Macke
Jupiter	github	GPL-3.0	Andrés Castellanos
MARSS-RISCV	github	MIT	Gaurav N Kothari, Parikshit P Sarnaik, Gokturk Yuksek (State University of New York at Binghamton)
QEMU	upstream	GPL	Sagar Karandikar (University of California, Berkeley), Bastian Koppelmann (University of Paderborn), Alex Suykov, Stefan O'Rear and Michael Clark (SiFive)
RARS	github	MIT	Benjamin Landers
Renode	website, github	MIT	Antmicro
Ripes	github	MIT	Morten Borup Petersen
RISC-V Virtual Prototype	website, github	MIT	Vladimir Herdt (University of Bremen, AGRA)
TinyEMU	website	MIT	Fabrice Bellard
Spike	github	BSD 3-clause	Andrew Waterman & Yunsup Lee (SiFive)
Swerv-ISS	github	GPL - 3	Joseph Rahmeh (Western Digital)
VLAB	VLAB Works	Proprietary	ASTC

Object toolchain

Name	Links	License	Maintainers
Binutils	RISC-V repo, Upstream repos	GPLv2	Andrew Waterman, Palmer Dabbelt & Jim Wilson (SiFive)
LLVM	GitHub mirror	Apache 2.0 with LLVM exception	Alex Bradbury (lowRISC)
Cranelift	GitHub	Apache 2.0	Cranelift core team

Debugging

Name	Links	License	Maintainers
GDB	Upstream	GPLv2	Andrew Burgess (Embecosm), Palmer Dabbelt (SiFive)
OpenOCD	Upstream repo, RISC-V repo	GPLv2	Tim Newsome, Megan Wachs, Palmer Dabbelt (SiFive)
GNU MCU Eclipse OpenOCD	Website, GitHub	GPLv2	Liviu Ionescu
Ozone - the J-Link Debugger	Website	SEGGER commercial license (J-Link PLUS)	SEGGER
Imperas Multi Processor Debugger	Website	Imperas Commercial License	Imperas
TCF Debugger	Website, GitHub	Eclipse Distribution License 1.0 (BSD) / Eclipse Public License 1.0	Sanimir Agovic

C compilers and libraries

Name	Links	License	Maintainers
GCC	Upstream, RISC-V repository	GPLv3	Andrew Waterman (SiFive), Palmer Dabbelt (SiFive), Jim Wilson (SiFive), Kito Cheng (Andes)
GNU MCU Eclipse RISC-V Embedded GCC (riscv-non-embed-gcc)	Web, Repository, Build, Binary package installer	Eclipse Public License	Liviu lonescu
Clang/LLVM	Upstream	Apache 2.0	Alex Bradbury (lowRISC)
CompCert	Upstream	INRIA Non-Commercial License Agreement	Xavier Leroy
Glibc	Upstream, RISC-V repository	GPLv2	Palmer Dabbelt (SiFive), Andrew Waterman (SiFive), DJ Delorie (Red Hat), Darius Rad(Bluespec)
Newlib	Upstream, RISC-V repository	GPLv2	Kito Cheng (Andes)
SEGGER Runtime Library	Website	SEGGER commercial license	SEGGER
Musl	-	-	-

Boot loaders and monitors

coreboot

• Maintainer(s): Ron Minnich (Google), Jonathan Neuschäfer
• Version: master
• Status: runs on spike, lowRISC/Nexys4DDR. Linux doesn't quite work yet.
• Upstreaming status: upstream
• Future work:
• RISC-V repository:
• Upstream repository: https://review.coreboot.org/cgit/coreboot.git/
• Privileged Spec: 1.9
• User Spec: 2.0
• ABI:

More information:

• https://riscv.org/wp-content/uploads/2016/01/Tues1345-riscvcoreboot.pdf
• https://www.youtube.com/watch?v=-KnwZzbvp1c (coreboot on RISC-V, Ron Minnich, RISC-V workshop)
• https://www.youtube.com/watch?v=CDNIWuf1jAk (coreboot on RISC-V, Ron Minnich, coreboot conference 2016)

UEFI

• Maintainer(s): Abner Chang, Dong Wei (HP Enterprise)
• Version:
• Status:
• Upstreaming status:
• Future work:
• RISC-V repository:
• Upstream repository:
• Privileged Spec:
• User Spec: 2.0
• ABI:

https://riscv.org/wp-content/uploads/2016/01/Tues1415-RISC-V-and-UEFI.pdf

Proxy Kernel/BBL

• Maintainer(s):
• Version:
• Status:
• Upstreaming status:
• Future work:
• Upstream repository: https://github.com/riscv/riscv-pk
• Privileged Spec: 1.9.1
• User Spec: 2.0
• ABI:

OpenSBI

• Maintainer(s): Anup Patel
• Version: 0.3
• Status:
• Upstreaming status:
• Future work:
• Upstream repository: https://github.com/riscv/opensbi
• Privileged Spec: 1.9.1
• User Spec:
• ABI:

OS and OS kernels

Linux built from source

Name	Links	License	Maintainers
Linux Kernel	github, kernel.org	GPLv2	Andrew Waterman (SiFive), Albert Ou (SiFive), Palmer Dabbelt (SiFive)
Yocto Project/OpenEmbedded	github		Khem Raj
Poky	github		Martin Maas (University of California, Berkeley)
Buildroot	busybox.net		Mark Corbin (Embecosm)

Linux distributions

Name	Links	License	Maintainers
Fedora	fedoraproject.org		Richard WM Jones, Stefan O’Rear, David Abdurachmanov
Debian	debian wiki, mit.edu, riscv.org, Annc		Manuel A. Fernandez Montecelo
OpenMandriva	openmandriva.org, openmandriva.org		Bernhard "Bero" Rosenkränzer
openSUSE	opensuse.org		Andreas Schwab (SUSE)
Gentoo	github		Palmer Dabbelt (University of California, Berkeley)
Parabola GNU/Linux-libre	github, parabola.nu		Andreas Grapentin (University of Potsdam, HPI)
januslinux	github		nee-san

Real-time Operating Systems

Name	Links	License	Maintainers
embOS	Website, RISC-V port	SEGGER commercial license, free for non-commercial use	SEGGER
RTEMS	rtems.org, docs.rtems.org		Hesham Almatary
FreeRTOS	sourceforge freertos.org		AWS
Zephyr	github, docs		Karol Gugala (Antmicro), Peter Gielda (Antmicro), Nathaniel Graff (SiFive)
NuttX	bitbucket.org, nuttx.org
Apache Mynewt	riscv.org		James Pace, Runtime
OpenWrt	github, binary repo		Zoltan Herpai
seL4	github, announcement		Hesham Almatary and Data61/CSIRO

BSD distributions

Name	Links	License	Maintainers
FreeBSD	github, wiki.freebsd.org, presentation		Ruslan Bukin (FreeBSD)
NetBSD	netbsd.org, github		Matt Thomas (NetBSD), Reinoud Zandijk (NetBSD)

Compilers and runtimes for other languages

Name	Links	License	Maintainers
Go	Upstream, RISC-V repository, Stef's fork	BSD 3-clause	Benjamin Barenblat (Google), Michael Pratt (Google), Stef O'Rear
Ocaml	Upstream, RISC-V repository	LGPL	Nicolás Ojeda Bär
Maxine VM (Java Virtual Machine)	Upstream	GPLv2	Maxine team
Jikes RVM (Java Virtual Machine)	Upstream	Eclipse Public License (EPL)	Martin Maas (University of California, Berkeley)
OpenJDK/HotSpot (Java Virtual Machine)	?	?	Alexey Baturo, Michael Knysnek, Martin Maas
Free Pascal	Upstream	?	Jeppe Johansen and others
Nim	Upstream	MIT	Andreas Rumpf and others
Ada (GNAT)	Upstream	Proprietary	AdaCore
Rust	Upstream	Apache and MIT	Rust Project
muForth	Upstream	?	David Frech
ibForth	Upstream	GPLv3	Lars Brinkhoff
Mecrisp-Quintis Forth kernel	Upstream	?	Matthias Koch

IDEs

Name	Links	License	Maintainers
GNU MCU Eclipse	Website, Repositories, Binary distribution	EPL-1.0 / various	Liviu Ionescu
Embedded Studio	Website, RISC-V spec	SEGGER commercial license, free for non-commercial use	SEGGER

Security

Name	Links	License	Maintainers
emCrypt	Website	SEGGER commercial license, free for non-commercial use	SEGGER
Hex Five Security	SDK	Proprietary	Hex Five Security Inc.
Keystone Enclave	Website, Repositories	BSD 3-clause	Keystone Team
SecureRF	Website, SDK	Proprietary	SecureRF Corp.
CoreGuard	Website	Proprietary	Dover Microsystems, Inc.

Help Wanted

• V8
• Node.js
• Dart