Intel® Agilex™ SoC FPGA Boot User Guide

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ID 683389
Date 11/10/2021
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Document Table of Contents
Document Table of Contents x
1. Introduction 2. FPGA Configuration First Mode 3. HPS Boot First Mode 4. Creating the Configuration Files 5. Golden System Reference Design and Design Examples 6. Configuring the FPGA Fabric from HPS Software 7. Debugging the Intel® Agilex™ SoC FPGA Boot Flow A. Document Revision History for Intel® Agilex™ SoC FPGA Boot User Guide
1. Introduction x
1.1. Glossary 1.2. Intel® Agilex™ SoC FPGA Boot Overview
2. FPGA Configuration First Mode x
2.1. Boot Flow Overview for FPGA Configuration First Mode 2.2. System Layout for FPGA Configuration First Mode
2.1. Boot Flow Overview for FPGA Configuration First Mode x
2.1.1. Power-On Reset (POR) 2.1.2. Secure Device Manager 2.1.3. First-Stage Bootloader 2.1.4. Second-Stage Bootloader 2.1.5. Operating System 2.1.63.1.6. Application2.1.63.1.6. Application
2.2. System Layout for FPGA Configuration First Mode x
2.2.1. External Configuration Host Only 2.2.2. External Configuration Host with HPS Flash 2.2.3. Single SDM Flash 2.2.4. FPGA Configuration First Dual Flash System
3. HPS Boot First Mode x
3.1. Boot Flow Overview 3.2. System Layout for HPS Boot First Mode
3.1. Boot Flow Overview x
3.1.1. Power-On Reset (POR) 3.1.2. Secure Device Manager 3.1.3. First-Stage Bootloader 3.1.4. Second-Stage Bootloader 3.1.5. Operating System 2.1.63.1.6. Application2.1.63.1.6. Application
3.2. System Layout for HPS Boot First Mode x
3.2.1. External Configuration Host Only 3.2.2. External Configuration Host with HPS Flash 3.2.3. Single SDM Flash 3.2.4. HPS Boot First Dual Flash System
4. Creating the Configuration Files x
4.1. Overview 4.2. Intel® Quartus® Prime Hardware Project Compilation 4.3. Bootloader Software Compilation 4.4. Programming File Generator 4.5. Configuration over JTAG 4.6. Configuration from QSPI 4.7. Configuration over AVST 4.8. Configuration via Protocol 4.9. Remote System Update
4.2. Intel® Quartus® Prime Hardware Project Compilation x
4.2.1. Device and Pin Options 4.2.2. Platform Designer Options
4.6. Configuration from QSPI x
4.6.1. Supported QSPI Devices 4.6.2. FPGA Configuration First 4.6.3. HPS Boot First
4.6.2. FPGA Configuration First x
4.6.2.1. Creating Configuration Files from Command Line 4.6.2.2. Creating Configuration Files Using Graphical Interface
4.6.3. HPS Boot First x
4.6.3.1. Creating Configuration Files from Command Line 4.6.3.2. Creating Configuration Files Using Graphical Interface
4.7. Configuration over AVST x
4.7.1. FPGA Configuration First 4.7.2. HPS Boot First
4.7.1. FPGA Configuration First x
4.7.1.1. Creating Configuration Files from Command Line 4.7.1.2. Creating Configuration Files Using Graphical Interface
4.7.2. HPS Boot First x
4.7.2.1. Creating Configuration Files from Command Line 4.7.2.2. Creating Configuration Files Using Graphical Interface
4.8. Configuration via Protocol x
4.8.1. Creating Configuration Files from Command Line 4.8.2. Creating Configuration Files Using Graphical Interface
5. Golden System Reference Design and Design Examples x
5.1. Golden System Reference Design 5.2. Bootloader Examples 5.3. Additional Design Examples
6. Configuring the FPGA Fabric from HPS Software x
6.1. Configuring the FPGA Fabric from U-Boot 6.2. Configuring the FPGA Fabric from Linux
7. Debugging the Intel® Agilex™ SoC FPGA Boot Flow x
7.1. Reset 7.2. Debugging the HPS Bootloader Using the Arm* DS* Intel® SoC FPGA Edition 7.3. Other Debug Considerations
7.1. Reset x
7.1.1. HPS Reset Pin 7.1.2. L4 Watchdog Timer 0
1. Introduction
2. FPGA Configuration First Mode
3. HPS Boot First Mode
4. Creating the Configuration Files
5. Golden System Reference Design and Design Examples
6. Configuring the FPGA Fabric from HPS Software
7. Debugging the Intel® Agilex™ SoC FPGA Boot Flow
A. Document Revision History for Intel® Agilex™ SoC FPGA Boot User Guide

7.1.2. L4 Watchdog Timer 0

Each CPU has its own L4 Watchdog Timer. The HPS FSBL enables L4 Watchdog Timer 0 for CPU0. L4 Watchdog Timer 0 issues a reset when a timeout occurs because of a corrupted bitstream or HPS image or any other issue that causes the HPS to hang.

This watchdog is active until the second-stage bootloader indicates that it has started correctly and taken control of the exception vectors. The timeout is configurable at the FSBL source. U-Boot SPL default is 3 seconds for timeout.

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