Intel® Stratix® 10 Hard Processor System Remote System Update User Guide

ID 683021
Date 4/05/2023

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6.6. Factory Image

Similar with application images, the factory image is protected against corruption by internal SHA and CRC32 checksums. A system contains only one factory image, which is tried when all the application images fail, or the decision firmware data is corrupted, or when both CPBs are corrupted or empty.
It is important to have a very reliable factory image, as it is the last one that is tried. Typically it is a small image, which does not need to perform the actual system function, just provide enough functionality for the system to be restored back to normal. This could include the following actions performed by HPS software:
  • Running a decision firmware update image, if decision firmware or decision firmware data are corrupted,
  • Restoring CPBs if both corrupted,
  • Restoring SPTs if both corrupted,
  • Adding or replacing application images if they are failing

The factory image can be updated by running a factory update image.