Agilex™ 7 SoC FPGA Boot User Guide

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ID 683389
Date 1/15/2025
Public
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 Agilex™ 7 SoC FPGA Boot Flow 8. SoC FPGA Boot User Guide Archives 9. Document Revision History for the Agilex™ 7 SoC FPGA Boot User Guide A. Boot Scratch Registers
1. Introduction x
1.1. Glossary 1.2. Agilex™ 7 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. 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 4.10. Partial Reconfiguration 4.11. Preserving SDRAM Content across HPS Resets for Agilex™ 7 M-Series Devices
4.2. Quartus® Prime Hardware Project Compilation x
4.2.1. Device and Pin Options 4.2.2. Platform Designer Options
4.5. Configuration over JTAG x
4.5.1. FPGA Configuration First 4.5.2. HPS Boots First
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
4.11. Preserving SDRAM Content across HPS Resets for Agilex™ 7 M-Series Devices x
4.11.1. Data Retention Mechanism Flow 4.11.2. Setting to Enable the Data Retention Mechanism 4.11.3. Preserving Data in SDRAM Across Reset Examples
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 6.3. FPGA Partial Reconfiguration from Linux 6.4. Hardware Project Compatibility in HPS Boot First Mode
6.4. Hardware Project Compatibility in HPS Boot First Mode x
6.4.1. HPS IO Hash Compatibility 6.4.2. HPS IO Hash Handling as related to the HPS EMIF IO Bank(s)
6.4.2. HPS IO Hash Handling as related to the HPS EMIF IO Bank(s) x
6.4.2.1. IO Configuration Differences on non-HPS EMIF IPs 6.4.2.2. Pin Location Differences 6.4.2.3. PLL Differences 6.4.2.4. Clock Spine Differences 6.4.2.5. HPS IO Hash Mismatch Troubleshooting Examples for HPS EMIF IOs
6.4.2.4. Clock Spine Differences x
6.4.2.4.1. Agilex™ 7 -Specific Clock Spine Differences 6.4.2.4.2. Register Packing Differences
7. Debugging the Agilex™ 7 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
A. Boot Scratch Registers x
A.1. BOOT_SCRATCH_COLD0 A.2. BOOT_SCRATCH_COLD1 A.3. BOOT_SCRATCH_COLD2 A.4. BOOT_SCRATCH_COLD3 A.5. BOOT_SCRATCH_COLD4, BOOT_SCRATCH_COLD5 A.6. BOOT_SCRATCH_COLD6, BOOT_SCRATCH_COLD7 A.7. BOOT_SCRATCH_COLD8 A.8. BOOT_SCRATCH_COLD9 A.9. BOOT_SCRATCH_COLD0, BOOT_SCRATCH_COLD1, BOOT_SCRATCH_COLD8, BOOT_SCRATCH_COLD9
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 Agilex™ 7 SoC FPGA Boot Flow
8. SoC FPGA Boot User Guide Archives
9. Document Revision History for the Agilex™ 7 SoC FPGA Boot User Guide
A. Boot Scratch Registers

4.11. Preserving SDRAM Content across HPS Resets for Agilex™ 7 M-Series Devices

The Agilex™ 7 M-Series device preserves SDRAM content during both cold and warm resets, regardless of the reset source. The IO96B DDR controller, which this device supports, enables this feature by continuing to run across these resets.

After an HPS reboot from a warm or cold reset, the HPS software evaluates certain conditions to determine if a full DDR initialization is necessary. If a full initialization is required, the SDRAM data is not preserved. During this process, a memory Built-in Self Test (BIST) is performed, resulting in the loss of data stored in SDRAM before the reset.


Section Content
Data Retention Mechanism Flow
Setting to Enable the Data Retention Mechanism
Preserving Data in SDRAM Across Reset Examples

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