AN 981: Using Generic QSPI Flash on SDM Devices

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ID 778053
Date 7/02/2024
Public
Document Table of Contents
Document Table of Contents x
1. Introduction 2. Overview 3. Requirements 4. Implementation Flow 5. Debugging QSPI Flash Device using QSPI Debugger 6. Document Revision History for AN 981: Using Generic QSPI Flash on SDM Devices
3. Requirements x
3.1. QPI Mode (4-4-4 protocol) 3.2. Sector Erase Size 3.3. Maximum QSPI Clock 3.4. QSPI Flash Device Reset Pin 3.5. QSPI Page Program Opcode 3.6. SFDP Parameters
4. Implementation Flow x
4.1. Generating Programming Files using Programming File Generator 4.2. Programming .jic files into QSPI Flash Device 4.3. Hard Processor System (HPS) Support
1. Introduction
2. Overview
3. Requirements
4. Implementation Flow
5. Debugging QSPI Flash Device using QSPI Debugger
6. Document Revision History for AN 981: Using Generic QSPI Flash on SDM Devices

5. Debugging QSPI Flash Device using QSPI Debugger

To debug the configuration QSPI flash device, follow the steps below.

  1. Ensure that JTAG configuration is successful using the project SOF and the targeted Intel FPGA devices.
  2. Apply the Configuration Debugger Tool to identity the QSPI compatibility with SDM firmware. You may refer to the following figure for more information.
Note: The QSPI Controller Settings and SFDP features in the Configuration debugger tool are only supported in the Agilex™ FPGA portfolio.
Figure 6. Flow Chart to Identify the QSPI Compatibility with SDM Firmware

There are a few scenarios that may cause the failure:

  1. Incorrect content in the SFDP table may cause the incorrect behavior/response from the flash device when SDM firmware is trying to interact with the flash device.
  2. The QSPI flash device does not comply to the SFDP standard. For example, when the SDM tries to read the SFDP header from the flash, the SFDP standard requires 8 dummy cycles for all (1-1-1), (2-2-2), and (4-4-4) modes. If the flash device fails to return the correct SFDP signature in any of the mode, then the SDM firmware would fail the configuration.
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