HDMI Stratix® 10 FPGA IP Design Example User Guide

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ID 683701
Date 4/09/2024
Public
Document Table of Contents
Document Table of Contents x
1. HDMI Intel® FPGA IP Design Example Quick Start Guide for Stratix® 10 Devices 2. HDMI 2.1 Design Example (Support FRL = 1) 3. HDMI 2.0 Design Example 4. HDCP Over HDMI 2.0/2.1 Design Example 5. HDMI Stratix® 10 FPGA IP Design Example User Guide Archives 6. Document Revision History for the HDMI Stratix® 10 FPGA IP Design Example User Guide
1. HDMI Intel® FPGA IP Design Example Quick Start Guide for Stratix® 10 Devices x
1.1. Directory Structure 1.2. Generating the Design 1.3. Hardware and Software Requirements 1.4. Simulating the Design 1.5. Compiling and Testing the Design 1.6. Design Limitation 1.7. HDMI Intel® FPGA IP Design Example Parameters
2. HDMI 2.1 Design Example (Support FRL = 1) x
2.1. HDMI 2.1 RX-TX Retransmit Design Block Diagram 2.2. Creating RX-Only or TX-Only Designs 2.3. Hardware and Software Requirements 2.4. Directory Structure 2.5. Design Components 2.6. Dynamic Range and Mastering (HDR) InfoFrame Insertion and Filtering 2.7. Design Software Flow 2.8. Running the Design in Different FRL Rates 2.9. Clocking Scheme 2.10. Interface Signals 2.11. Design RTL Parameters 2.12. Hardware Setup 2.13. Simulation Testbench 2.14. Design Limitations 2.15. Debugging Features
2.5. Design Components x
2.5.1. HDMI TX Components 2.5.2. HDMI RX Components 2.5.3. Top-Level Common Blocks
2.15. Debugging Features x
2.15.1. Software Debugging Message 2.15.2. SCDC Information from the Sink Connected to TX 2.15.3. Clock Frequency Measurement
3. HDMI 2.0 Design Example x
3.1. HDMI RX-TX Retransmit Design Block Diagram 3.2. Creating TX or RX Only Designs 3.3. Design Components 3.4. Dynamic Range and Mastering (HDR) InfoFrame Insertion and Filtering 3.5. Clocking Scheme 3.6. Interface Signals 3.7. Design RTL Parameters 3.8. Hardware Setup 3.9. Simulation Testbench 3.10. Upgrading Your Design
4. HDCP Over HDMI 2.0/2.1 Design Example x
4.1. High-bandwidth Digital Content Protection (HDCP) 4.2. Nios® V Processor Software Flow 4.3. Design Walkthrough 4.4. Protection of Encryption Key Embedded in FPGA Design 4.5. Security Considerations 4.6. Debug Guidelines
4.1. High-bandwidth Digital Content Protection (HDCP) x
4.1.1. HDCP Over HDMI Design Example Architecture
4.3. Design Walkthrough x
4.3.1. Setting Up the Hardware 4.3.2. Generating the Design 4.3.3. Including HDCP Production Keys 4.3.4. Compiling the Design 4.3.5. Viewing the Results
4.3.3. Including HDCP Production Keys x
4.3.3.1. Storing Plain HDCP Production Keys in the FPGA (Support HDCP Key Management = 0) 4.3.3.2. Storing Encrypted HDCP Production Keys in the External Flash Memory or EEPROM (Support HDCP Key Management = 1)
4.3.3.1. Storing Plain HDCP Production Keys in the FPGA (Support HDCP Key Management = 0) x
4.3.3.1.1. HDCP Key Mapping from DCP Key Files 4.3.3.1.2. hdcp1x_tx_kmem.v and hdcp1x_rx_kmem.v files 4.3.3.1.3. hdcp2x_rx_kmem.v file 4.3.3.1.4. hdcp2x_tx_kmem.v file
4.3.3.2. Storing Encrypted HDCP Production Keys in the External Flash Memory or EEPROM (Support HDCP Key Management = 1) x
4.3.3.2.1. Intel KEYENC 4.3.3.2.2. Key Programmer
4.3.5. Viewing the Results x
4.3.5.1. Push Buttons and LED Functions
4.6. Debug Guidelines x
4.6.1. HDCP Status Signals 4.6.2. Modifying HDCP Software Parameters 4.6.3. Frequently Asked Questions (FAQ)
1. HDMI Intel® FPGA IP Design Example Quick Start Guide for Stratix® 10 Devices
2. HDMI 2.1 Design Example (Support FRL = 1)
3. HDMI 2.0 Design Example
4. HDCP Over HDMI 2.0/2.1 Design Example
5. HDMI Stratix® 10 FPGA IP Design Example User Guide Archives
6. Document Revision History for the HDMI Stratix® 10 FPGA IP Design Example User Guide

4.4. Protection of Encryption Key Embedded in FPGA Design

Many FPGA designs implement encryption, and there is often the need to embed secret keys in the FPGA bitstream. In newer device families, such as Stratix® 10 and Agilex™ 7, there is a Secure Device Manager block that can securely provision and manage these secret keys. Where these features do not exist, you can secure the content of the FPGA bitstream, including any embedded secret user keys, with encryption.

The user keys should be kept secure within your design environment, and ideally add to the design using an automated secure process. The following steps show how you can implement such a process with Quartus® Prime tools.
  1. Develop and optimize the HDL in Quartus® Prime in a non-secure environment.
  2. Transfer the design to a secure environment and implement an automated process to update the secret key. The on-chip memory embed the key value. When the key is updated, the memory initialization file (.mif) can change and the “quartus_cdb --update_mif” assembler flow can change the HDCP protection key without re-compiling. This step is very quick to run and preserves the original timing.
  3. The Quartus® Prime bitstream then encrypt with the FPGA key before transferring the encrypted bitstream back to the non-secure environment for final testing and deployment.
It is recommended to disable all debug access that can recover the secret key from the FPGA. You can disable the debug capabilities completely by disabling the JTAG port, or selectively disable and review that no debug features such as in-system memory editor or Signal Tap can recover the key. Refer to Intel Stratix 10 Device Security User Guide for further information on using FPGA security features including specific steps on how to encrypt the FPGA bitstream and configure security options such as disabling JTAG access.
Note: You can consider the additional step of obfuscation or encryption with another key of the secret key in the MIF storage.
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