SWRA760A April   2023  – April 2024 AWR2544 , AWR2944

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Definitions, Abbreviations, Acronyms
  5. 2Introduction
  6. 3Basic Bootloader Flow
    1. 3.1 Boot Flow Introduction
    2. 3.2 Preparing the Application for Boot
      1. 3.2.1 SBL Image Format
      2. 3.2.2 Signing Scripts
    3. 3.3 ROM Boot
      1. 3.3.1 Boot mode - SFLASH
        1. 3.3.1.1 Image Load Sequence
        2. 3.3.1.2 Boot Mode UART
          1. 3.3.1.2.1 Image Download Sequence
    4. 3.4 SBL Boot
      1. 3.4.1 R5 SBL Flash Offset
      2. 3.4.2 R5 SBL Image Size
  7. 4Conclusion
  8. 5Revision History
3.3.1.2.1 Image Download Sequence

This image download sequence is entered by placing the device in flashing mode

GUID-0668081F-2CA2-47C6-98AA-1CEBA1EB823D-low.png Figure 3-6 Loading flash writer image

Key points

  • The RBL expects a valid image over the UART peripheral. This image can be flash writer image which can then download the SBL and APP images over the UART and store them in the sFlash device.
  • If the user wishes to download the SBL and APP images over CAN or Ethernet peripheral then the peripheral can load another relevant image (instead of the flash writer image which downloads images over UART) to achieve that.