SPRADK5 June   2025 TDA4VM

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Physical Boot Mode DIP Switch Configuration
    1. 2.1 eMMC Boot Mode Switch for Primary Boot Mode
    2. 2.2 MMC/SD Boot Mode Switch for Backup Boot Mode
  6. 3Experiment
    1. 3.1 Prepare eMMC Boot Images for Primary Boot Mode
    2. 3.2 Prepare MMC/SD Boot Images for Backup Boot Mode
    3. 3.3 eMMC Memory Layout
    4. 3.4 Verify Redundant Boot
  7. 4Summary
  8. 5References

4 Summary

This application note demonstrates a robust and practical approach to implementing redundant boot using a single eMMC device on TI TDA4x Jacinto devices. The system is configured with eMMC boot as the primary mode and MMC/SD boot as the backup mode, thereby providing boot-time reliability without requiring hardware changes or multiple memory devices.

Key benefits of this approach include:

  • Single physical boot mode configuration to support both primary and backup boot paths
  • Shared eMMC hardware interface for both primary and backup boot
  • Seamless fallback to backup images in case of corruption or update failure

Through image preparation, proper bootloader configuration, and validation through controlled image corruption, this method proves to be a reliable design for automotive systems where resilient boot behavior is critical. This design can be adopted in production environments to improve system availability, reduce field maintenance effort, and enhance overall safety and robustness in ADAS applications.