Intel® Simics® Simulator for Intel® FPGAs: Intel Agilex® 5 E-Series Virtual Platform User Guide

ID 786901
Date 10/02/2023
Public

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Document Table of Contents

2.1.3. FPGA Fabric Design

The FPGA fabric design corresponds to the logic model implemented in the FPGA fabric. In the 23.3 release, this model includes the following components instantiated under the qsys_top component:
  • Example design corresponding to an On-Chip memory.
  • Peripheral Subsystem that includes the same example design with the On-Chip memory.
    Note: Eventually, the example design instances will be replaced by the FPGA peripheral IPs to match GHRD.

Each of the two On-Chip memories included in the FPGA fabric design is connected to HPS-to-FPGA bridges (one to the h2f_bridge and other to the h2f_lw_bridge). HPS can access the On-Chip memory through the bridges for read and write operations. The base address offset mapped to the corresponding HPS-to-FPGA bridge (base_addr parameter) in this virtual platform is set to 0x00. The On-chip memory device is modeled as a DML device using the example_design.dml file, and it is instantiated in the fabric example design, which is implemented as a Python script named sm_fabric_example_design_comp.py.

A block diagram of the FPGA Fabric design is shown in the following figure:

Figure 2. FPGA Fabric Design Block Diagram

The hierarchical names of the FPGA Fabric design components are:

  • FPGA example design connected to H2F bridge: system.board.fpga.soc_inst.example_design
  • Peripheral subsystem: system.board.fpga.soc_inst.periph_subsys
  • FPGA example design connected to H2F_LW: system.board.fpga.soc_inst.periph_subsys.example_design_lw