Hard Processor System Booting User Guide: Agilex™ 5 SoCs

ID 813762
Date 12/20/2024
Public

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6.4.2.4.2. Register Packing Differences

Differences in register packing between designs can also cause HPS IO hash mismatches. To check if a register is packed, look at the "Input/Output/Output Enable Register" columns in the "Input/Output Pins" section. If one design packs IOs in the HPS IO bank but another design does not, the HPS IO hash differs. To ensure consistent register packing, use the register packing QSF assignments as shown below:

set_instance_assignment FAST_INPUT_REGISTER OFF/ON -to gpio[0] 
set_instance_assignment FAST_OUTPUT_REGISTER OFF/ON -to gpio[0] 
set_instance_assignment FAST_OUTPUT_ENABLE_REGISTER OFF/ON -to gpio[0]