Hard Processor System Remote System Update User Guide: Agilex™ 3 and Agilex™ 5 SoCs
ID
852610
Date
12/15/2025
Public
1. Overview
2. Use Cases
3. Quad SPI Flash Layout
4. Quartus® Prime Software and Tool Support
5. Software Support
6. Flash Corruption - Detection and Recovery
7. Remote System Update Example
8. Version Compatibility Considerations
9. Revision History for the Hard Processor System Remote System Update User Guide: Agilex™ 3 and Agilex™ 5 SoCs
A. Configuration Flow Diagrams
B. RSU Status and Error Codes
C. U-Boot RSU Reference Information
D. LIBRSU Reference Information
E. Combined Application Images
2.1. Manufacturing
2.2. Application Image Boot
2.3. Factory Image Boot
2.4. Modifying the List of Application Images
2.5. Querying RSU Status
2.6. Loading a Specific Image
2.7. Protected Access to Flash
2.8. Remote System Update Watchdog
2.9. RSU Notify
2.10. Updating the Factory Image
2.11. Updating the Decision Firmware
2.12. Retrying when Configuration Fails
2.13. Querying the Decision Firmware Version
C.6.1. rsu_init
C.6.2. rsu_exit
C.6.3. rsu_slot_count
C.6.4. rsu_slot_by_name
C.6.5. rsu_slot_get_info
C.6.6. rsu_slot_size
C.6.7. rsu_slot_priority
C.6.8. rsu_slot_erase
C.6.9. rsu_slot_program_buf
C.6.10. rsu_slot_program_factory_update_buf
C.6.11. rsu_slot_program_buf_raw
C.6.12. rsu_slot_verify_buf
C.6.13. rsu_slot_verify_buf_raw
C.6.14. rsu_slot_enable
C.6.15. rsu_slot_disable
C.6.16. rsu_slot_load
C.6.17. rsu_slot_load_factory
C.6.18. rsu_slot_rename
C.6.19. rsu_slot_delete
C.6.20. rsu_slot_create
C.6.21. rsu_status_log
C.6.22. rsu_notify
C.6.23. rsu_clear_error_status
C.6.24. rsu_reset_retry_counter
C.6.25. rsu_dcmf_version
C.6.26. rsu_max_retry
C.6.27. rsu_dcmf_status
C.6.28. rsu_create_empty_cpb
C.6.29. rsu_restore_cpb
C.6.30. rsu_save_cpb
C.6.31. rsu_restore_spt
C.6.32. rsu_save_spt
C.6.33. rsu_running_factory
C.7.1. dtb
C.7.2. list
C.7.3. slot_by_name
C.7.4. slot_count
C.7.5. slot_disable
C.7.6. slot_enable
C.7.7. slot_erase
C.7.8. slot_get_info
C.7.9. slot_load
C.7.10. slot_load_factory
C.7.11. slot_priority
C.7.12. slot_program_buf
C.7.13. slot_program_buf_raw
C.7.14. slot_program_factory_update_buf
C.7.15. slot_rename
C.7.16. slot_delete
C.7.17. slot_create
C.7.18. slot_size
C.7.19. slot_verify_buf
C.7.20. slot_verify_buf_raw
C.7.21. status_log
C.7.22. update
C.7.23. notify
C.7.24. clear_error_status
C.7.25. reset_retry_counter
C.7.26. display_dcmf_version
C.7.27. display_dcmf_status
C.7.28. display_max_retry
C.7.29. restore_spt
C.7.30. save_spt
C.7.31. create_empty_cpb
C.7.32. restore_cpb
C.7.33. save_cpb
C.7.34. check_running_factory
D.6.1. rsu_slot_priority
D.6.2. rsu_slot_erase
D.6.3. rsu_slot_program_buf
D.6.4. rsu_slot_program_factory_update_buf
D.6.5. rsu_slot_program_file
D.6.6. rsu_slot_program_factory_update_file
D.6.7. rsu_slot_program_buf_raw
D.6.8. rsu_slot_program_file_raw
D.6.9. rsu_slot_verify_buf
D.6.10. rsu_slot_verify_file
D.6.11. rsu_slot_verify_buf_raw
D.6.12. rsu_slot_verify_file_raw
D.6.13. rsu_slot_program_callback
D.6.14. rsu_slot_program_callback_raw
D.6.15. rsu_slot_verify_callback
D.6.16. rsu_slot_verify_callback_raw
D.6.17. rsu_slot_copy_to_file
D.6.18. rsu_slot_enable
D.6.19. rsu_slot_disable
D.6.20. rsu_slot_load_after_reboot
D.6.21. rsu_slot_load_factory_after_reboot
D.6.22. rsu_slot_rename
D.6.23. rsu_slot_delete
D.6.24. rsu_slot_create
D.6.25. rsu_status_log
D.6.26. rsu_notify
D.6.27. rsu_clear_error_status
D.6.28. rsu_reset_retry_counter
D.6.29. rsu_dcmf_version
D.6.30. rsu_max_retry
D.6.31. rsu_dcmf_status
D.6.32. rsu_save_spt
D.6.33. rsu_restore_spt
D.6.34. rsu_save_cpb
D.6.35. rsu_create_empty_cpb
D.6.36. rsu_restore_cpb
D.6.37. rsu_running_factory
D.7.1. count
D.7.2. list
D.7.3. size
D.7.4. priority
D.7.5. enable
D.7.6. disable
D.7.7. request
D.7.8. request-factory
D.7.9. erase
D.7.10. add
D.7.11. add-factory-update
D.7.12. add-raw
D.7.13. verify
D.7.14. verify-raw
D.7.15. copy
D.7.16. log
D.7.17. notify
D.7.18. clear-error-status
D.7.19. reset-retry-counter
D.7.20. display-dcmf-version
D.7.21. display-dcmf-status
D.7.22. display-max-retry
D.7.23. create-slot
D.7.24. delete-slot
D.7.25. restore-spt
D.7.26. save-spt
D.7.27. create-empty-cpb
D.7.28. restore-cpb
D.7.29. save-cpb
D.7.30. check-running-factory
D.7.31. help
4.2.3.1. Creating Initial Flash Image
This section shows you how to create the initial flash image with the Remote System Update feature enabled. This initial image contains at least the factory image and one application image. It typically contains at least one empty partition for storing an additional application image. The instructions in the following sections show figures that are specific for the Agilex™ 5 devices, but the same instructions apply for Agilex™ 3 devices also. If there are any relevant differences for Agilex™ 3 devices, those differences will be indicated in the instructions.