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TI8148 can't load 1st stage UBOOT under UART

Dave Fish
Intellectual 360 points

Hi, 

We've just made our board using the 8148, I'm able to see the CCCCC across the serial port, when I try to load the .uart file over Xmodem, I see on the trace that the CCC's are still being sent, but the file isn't sending. 

In the instructions it says to hit the reset button on the EVM...which reset do I need to assert to get the download to start on our board?

Thanks

Dave

  • 0
    TI__Guru* 80190 points

    Hello,

    DM814X supports Flashing over UART. Please follow the steps.
    UART-Flash-Method
    1. Boot over UART to load the 1st stage of U-Boot as described over here. Make sure that you interrupt the
    countdown in the 1st stage i.e. at the TI-MIN# prompt.
    2. Load the 2nd stage of U-Boot over UART as described over here.
    3. Flash the 1st stage of U-Boot to either NAND using the steps over here or to SPI using the steps over here.
    4. Flash the 2nd stage of U-Boot to either NAND using the steps over here or to SPI using the steps over here.
    5. After flashing the 2 stages use the appropriate switch settings to boot from NAND or from SPI.

    Refer to:

    /ti-ezsdk_dm814x-evm_5_05_02_00/board-support/docs

    TI81XX_PSP_U-Boot.pdf

    Best Regards,

    Margarita