Hard Processor System Booting User Guide: Agilex™ 5 SoCs

ID 813762
Date 12/20/2024
Public
Document Table of Contents

3.1.2. Secure Device Manager

After the Agilex™ 5 SoC FPGA exits POR, the SDM samples the MSEL[2:0] pins to determine the boot source. Next, the device configures the SDM I/Os according to the selected boot source interface and the SDM retrieves the configuration bitstream through the interface.

The typical configuration bitstream for HPS boot first mode contains:

  1. SDM configuration firmware
  2. HPS external memory interface (EMIF) I/O configuration data
  3. HPS FSBL code and HPS FSBL hardware handoff binary

The SDM completes the configuration of the HPS EMIF I/O and then copies the HPS FSBL to the HPS on-chip RAM.