Intel® Agilex™ Configuration User Guide

ID 683673
Date 5/30/2022
Public

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5.2. Guidelines for Performing Remote System Update Functions for Non-HPS

Figure 65.  Intel® Agilex™ Modules and Interfaces to Implement RSU Using Images Stored in Flash Memory
Here are guidelines to follow when implementing remote system update:
  1. The factory or application image must at least contain a remote system update host controller and the Mailbox Client Intel® FPGA IP.
    • You can use either custom logic, the Nios® II processor, or the JTAG to Avalon Master Bridge IP as a remote system update host controller.
    • The remote system update host controller controls the remote system update function by sending commands to and receiving responses from the SDM via Mailbox Client Intel® FPGA IP. The Mailbox Client functions as the messenger between the remote system update host and SDM. It passes the commands to and responses from the SDM.
  2. The initial RSU image file should include a factory image and at least one application image. The remote system update image must be programmed into the flash memory. You can use a duplicate copy of factory image to begin developing RSU functionality before the actual application image is complete. In user mode you can program additional application images.
  3. The remote system update requires you to use the AS x4 configuration scheme to configure the FPGA with the initial RSU image.
  4. Once the device enters user mode with either the factory image or an application image, the remote system update host can perform the following remote system update operations:
    1. Reconfiguring the device with an application or factory image:
      1. From factory image to an application image or vice versa
      2. From an application image to another application image
    2. Erasing the application image
    3. Adding an application image
    4. Updating an application or factory image

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