SiFive HiFive Unleashed Manuel utilisateur

SiFive HiFive Unleashed Getting Started Guide

v1p2

SiFive HiFive Unleashed Getting Started

Guide

Proprietary Notice

Information in this document is provided “as is,” with all faults.

SiFive expressly disclaims all warranties, representations, and conditions of any kind, whether

express or implied, including, but not limited to, the implied warranties or conditions of mer-

chantability, fitness for a particular purpose and non-infringement.

SiFive does not assume any liability rising out of the application or use of any product or circuit,

and specifically disclaims any and all liability, including without limitation indirect, incidental, spe-

cial, exemplary, or consequential damages.

SiFive reserves the right to make changes without further notice to any products herein.

Release Information

Version Date Changes

v1p2 February 18, 2020 • Updated software development flow

v1p1 April 06, 2018

• Updated introduction

• Added component diagrams

• Added links to schematics and design files

• Added software development flow

v1p0 March 09, 2018 • Initial Release

Contents

1 Introduction .............................................................................................................. 3

1.1 HiFive Unleashed Components ....................................................................................3

1.2 HiFive Unleashed Schematics......................................................................................3

2Required Hardware ...............................................................................................4

3 Optional Hardware ................................................................................................5

4 Board Setup.............................................................................................................. 6

5 Boot and Run ......................................................................................................... 11

5.1 Connecting with ssh .................................................................................................. 11

5.2 Connecting with USB console ....................................................................................11

5.3 Knobs on the HiFive Unleashed .................................................................................12

5.4 HiFive Unleashed Boot..............................................................................................12

6 Firmware Update.................................................................................................. 14

7 Software Development Flow ..........................................................................15

7.1 Supported Platforms .................................................................................................15

7.2 Software Development with the Freedom Unleashed SDK............................................15

7.2.1 Install Prerequisite Packages ............................................................................15

7.2.2 Clone the freedom-u-sdk Repository ..................................................................16

7.2.3 Build the System ..............................................................................................16

7.2.4 Copy the System to an SD Card ........................................................................16

8 Connector Pinout.................................................................................................19

8.1 FMC Connector ........................................................................................................ 19

8.2 Low Speed I/O Expansion Connectors........................................................................23

8.3 MicroUSB Connector.................................................................................................24

8.4 MicroSD Card Connector...........................................................................................24

8.5 JTAG Connector ....................................................................................................... 24

Chapter 1

Introduction

HiFive Unleashed is a Linux development platform for SiFive’s Freedom U540 SoC, the world’s

first 4+1 64-bit multi-core Linux-capable RISC-V SoC. The HiFive Unleashed has 8GB DDR4,

32MB QuadSPI Flash, a Gigabit Ethernet port, and a MicroSD card slot for more external stor-

age. Additionally, the HiFive Unleashed supports adding new features, such as PCI Express

(PCIe), through the FMC connector and low-speed I/O expansion connectors.

1.1 HiFive Unleashed Components

1.2 HiFive Unleashed Schematics

Schematics and design files for HiFive Unleashed are available at:

https://www.sifive.com/products/hifive-unleashed

Chapter 2

Required Hardware

Using the HiFive Unleashed Development Kit requires the following hardware:

HiFive Unleashed Development Kit

SiFive’s HiFive Unleashed development kit is based around SiFive’s FU540-C000 SoC. It can

be purchased from Crowd Supply:

http://www.crowdsupply.com/sifive/hifive-unleashed

USB A to Micro-B Cable

Any standard USB Type A Male to Micro-B Male cable can be used to interface with the HiFive

Unleashed.

http://store.digilentinc.com/usb-a-to-micro-b-cable

12V DC Power Wall Adapter

The HiFive Unleashed Development Kit requires an external 12V, 2A power supply. When not

powering directly from the FMC expansion module, a 12V DC Wall Adapter with a 5.5 outer

diameter, 2.5 mm center-positive barrel plug, must be plugged into DC power jack on the HiFive

Unleashed. If powering directly from the FMC expansion module, then unplug the 12V DC

power wall adapter from the development kit. Power should not be supplied from 2 different

external sources.

Chapter 3

Optional Hardware

Ethernet Cable

HiFive Unleashed Development Kit has an RJ45 Ethernet port that enables the FU540-C000 to

connect to an 10/100/1000 Base-T network.

FMC Expansion Carrier Card

Additional functionality can be added to the HiFive Unleashed Development Kit through the

FMC connector. The FMC expansion carrier card typically has an FPGA to enable third-party

developers to add new logic to the development kit.

The HiFive Unleashed Development Kit can be directly powered from the FMC expansion car-

rier card. When powering from the FMC expansion carrier card, do not plug in the 12V DC

adapter into the HiFive Unleashed.

Chapter 4

Board Setup

To prepare the board for use, follow these steps:

• Unplug the HiFive Unleashed and switch the power off (red button sticking out). The board is

still powered even when the switch is off, so handle with care whenever power is applied.

• Ensure the fan is plugged in.

• Set all pins in the DIP-switch block to the LEFT. The ON position=0; therefore, this sets

MSEL to mode 1111. See the boot modes table in next section for more information on

MSEL.

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