SPRADN0 December   2024 F29H850TU , F29H859TU-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Programming Fundamentals
  5. 2Introduction
    1. 2.1 Hardware Security Module
    2. 2.2 ROM Bootloader
    3. 2.3 Combined Image with X.509 Certificate
  6. 3Flash Kernel Implementation
    1. 3.1 CPU1 Firmware Upgrade (HS-FS)
    2. 3.2 Key Provision (HS-FS to HS-KP)
    3. 3.3 CPU1 Secure Firmware Upgrade (HS-KP/SE to HS-SE)
    4. 3.4 HSM Firmware Upgrade (HS-KP/SE to HS-SE)
    5. 3.5 SECCFG Code Provisioning (HS-KP/SE to HS-SE)
  7. 4Host Application: UART Flash Programmer
    1. 4.1 Overview
    2. 4.2 Build UART Flash Programmer with Visual Studio
    3. 4.3 Build UART Flash Programmer with CMake
    4. 4.4 Packet Format
    5. 4.5 Kernel Commands
  8. 5Example Usage
    1. 5.1 Loading the Flash Kernel onto the Device
      1. 5.1.1 Hardware Setup
      2. 5.1.2 Running the UART Flash Programmer
    2. 5.2 CPU1 Device Firmware Upgrade (HS-FS only)
    3. 5.3 Convert HS-FS to HS-SE
    4. 5.4 Loading a RAM-based HSMRt Image
    5. 5.5 Key Provision (HS-FS to HS-KP)
    6. 5.6 Code Provision (HS-KP/SE to HS-SE)
  9. 6Troubleshooting
    1. 6.1 General
    2. 6.2 UART Boot
    3. 6.3 Application Load
  10. 7Summary
  11. 8References

7 Summary

As applications grow in complexity, the need to fix bugs, add features, and otherwise modify embedded firmware is increasingly critical in end applications. Enabling functionality like this can be easily and inexpensively accomplished through the use of bootloaders.

This application note aims to solve this problem by the introduction of a secondary bootloader (SBL), which is the UART flash kernel in this case. This document discusses the specifics of the kernel and the host application tool found in the F29H85x MCU SDK.