5.1.1. RSU Glossary
|Firmware||Firmware that runs on SDM. Implements many functions including the functions listed here:
|Decision firmware||Firmware to identify and load the highest priority image. Previous versions of this user guide refer to decision firmware as static firmware. Starting in version 19.1 of the Intel® Quartus® Prime software, you can use RSU to update this firmware.|
|Decision firmware data||Decision firmware data structure containing the following information:
|Configuration pointer block (CPB)||A list of application image addresses in order of priority. When you add an image address to this block, that image becomes the highest priority.|
|Sub-partition table (SPT)||Data structure to facilitate the management of the flash storage.|
|Application image||Configuration bitstream that implements your design. This image includes the SDM firmware.|
The backup application image that the RSU loads when all attempts to load an application image fail.
The factory image should provide enough functionality for the device to recover when all application images are corrupt. Once the factory image loads, you can program new application images to replace the failing images.
The SDM loads the factory image in the following circumstances:
The configuration system treats the factory image in the same way as it does an application image.
|Initial RSU image||Contains the factory image, the application images, the decision firmware, and the associated RSU data structures.|
|Factory update image||An image that updates the following RSU-related items in flash: