HDMI Intel® Arria 10 FPGA IP Design Example User Guide

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ID 683156
Date 7/29/2022
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Document Table of Contents
Document Table of Contents x
1. HDMI Intel® FPGA IP Design Example Quick Start Guide for Intel® Arria® 10 Devices 2. HDMI 2.1 Design Example (Support FRL = 1) 3. HDMI 2.0 Design Example (Support FRL = 0) 4. HDCP Over HDMI 2.0/2.1 Design Example 5. HDMI Intel® Arria® 10 FPGA IP Design Example User Guide Archives 6. Revision History for HDMI Intel® Arria® 10 FPGA IP Design Example User Guide
1. HDMI Intel® FPGA IP Design Example Quick Start Guide for Intel® Arria® 10 Devices x
1.1. Generating the Design 1.2. Simulating the Design 1.3. Compiling and Testing the Design 1.4. 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 2.16. Upgrading Your Design
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 (Support FRL = 0) x
3.1. HDMI 2.0 RX-TX Retransmit Design Block Diagram 3.2. Hardware and Software Requirements 3.3. Directory Structure 3.4. Design Components 3.5. Dynamic Range and Mastering (HDR) InfoFrame Insertion and Filtering 3.6. Clocking Scheme 3.7. Interface Signals 3.8. Design RTL Parameters 3.9. Hardware Setup 3.10. Simulation Testbench 3.11. 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 II 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. Set Up the Hardware 4.3.2. Generate the Design 4.3.3. Include HDCP Production Keys 4.3.4. Compile the Design 4.3.5. View the Results
4.3.3. Include HDCP Production Keys x
4.3.3.1. Store plain HDCP production keys in the FPGA (Support HDCP Key Management = 0) 4.3.3.2. Store encrypted HDCP production keys in the external flash memory or EEPROM (Support HDCP Key Management = 1)
4.3.3.1. Store 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. Store 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. View 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 Intel® Arria® 10 Devices
2. HDMI 2.1 Design Example (Support FRL = 1)
3. HDMI 2.0 Design Example (Support FRL = 0)
4. HDCP Over HDMI 2.0/2.1 Design Example
5. HDMI Intel® Arria® 10 FPGA IP Design Example User Guide Archives
6. Revision History for HDMI Intel® Arria® 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 Intel® Stratix® 10 and Intel Agilex, 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 Intel® Quartus® Prime tools.
  1. Develop and optimize the HDL in Intel® 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 Intel® 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 AN 556: Using the Design Security Features in Intel FPGAs 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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