Intel® FPGA Remote System Upgrade - Semiconductor Business -Macnica

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Design FPGA/CPLD/ASIC Intel

The “Remote System Upgrade” feature allows Intel FPGAs to receive new configuration data from a remote source and update the contents of the flash memory so that the new configuration data allows reconfiguration of the FPGA. This enables you to shorten design cycles, keep pace with evolving standards, and overcome the difficult challenges of deploying systems in remote locations.

What is Remote System Upgrade (RSU)?

A general term for upgrading (rewriting) the data content of the memory device that stores the configuration data for the Intel FPGA.
The figure below illustrates this operation.

Remote system upgrade is performed according to the following operation flow.

0. FPGA works with existing configuration data
1. Transfer and update new configuration data to Flash memory externally via FPGA
2. IP in FPGA accesses updated configuration data in Flash memory
3. Reconfigure FPGA with new image

The figure below shows the configuration of FPGA and Flash memory for configuration to realize remote system upgrade.

Eligible device family

Table 1. Devices that support RSU
FPGA family	Stratix® V, Stratix® IV, Arria® 10, Arria® V, Cyclone® 10, Cyclone® V, MAX® 10
Configuration ROM	EPCQA, EPCQ, EPCS

RSU must have remote update capability

To implement remote system upgrade, store two types of files in the FPGA's configuration ROM:

Table 2. File types and overview
factory image	Configuration data that is loaded into the FPGA at startup or in the event of a system error. Depending on the device, there are families where initial boot is determined to load the factory image.
application image	Data to be reconfigured into the FPGA. Multiple holdings possible. Stored in pages excluding factory images. May be renewed upon RSU.

You can usually update the behavior of the FPGA by switching between this factory image and the application image on the fly. This feature is called remote update.

[Related information] How to switch FPGA configuration data HDL edition

Extending this remote update to rewrite the existing application image in Flash memory, which stores the configuration data, is called remote system upgrade. To enable remote system upgrade and remote update functionality, a dedicated IP must be incorporated into the user's design.

Table 3. FPGA Families and IP
FPGA family	feature	IP
Arria 10 Cyclone 10GX	Optionally specify configuration data (factory/application) to use at startup	Remote Update Intel FPGA IP Generic Serial Flash Interface Intel FPGA
Stratix V Stratix IV Arria V Cyclone V	Start from factory design. When transitioning from one application design to another application design, it is necessary to return to the factory design once.
Cyclone 10 LP
MAX 10	Optionally specify configuration data (factory/application) to use at startup	On-Chip Flash Intel FPGA IP Dual Configuration Intel FPGA IP

Image of switching configuration data

Remote update has different specifications for switching configuration data depending on each FPGA.
Below is a simple chart for each family.

Arria 10, Cyclone 10 GX Remote Update Mode

Configuration data switching image in Arria 10, Cyclone 10 GX

Remote update mode for Stratix V, Stratix IV, Arria V, Cyclone V

Configuration data switching image in Stratix V, Stratix IV, Arria V, Cyclone V

Cyclone 10 LP Remote Update Mode

Configuration data switching image in Cyclone 10 LP

Remote Update Mode in MAX 10

Configuration data switching image in MAX 10

General Procedure for Remote System Upgrade

Each user design includes and compiles IP for RSU
Create programming data for RSU
Write to Configuration ROM (or Flash memory)
Configure FPGA, FPGA works
Update configuration ROM (or Flash memory) data externally while FPGA is running
Reconfigure FPGA