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Boot question 8148

Dave Fish
Intellectual 360 points

Hi, 

If I load the u-boot.min through JTAG into nand. How can I tell if it's running without the serial port. Also I only have the XDV100V2 JTAG...

Thanks

Dave

  • 0
    TI__Guru**** 170625 points

    Dave,

    Are you working with the DM814x EVM or DM814x based custom board?

    Dave Fish said:
    How can I tell if it's running without the serial port.

    Without serial port, it is really hard to work with Linux based SDK. If you flash to NAND everything (u-boot.min, u-boot.bin, uImage, rootfs), then you will see the menu on the LCD touchscreen. If you see that menu on the LCD and the demos are working fine, this can prove you successfully flash into the NAND u-boot.min and the rest of the SDK components.

    But verifying that you have flash the u-boot.min into NAND without serial port can be hard task. What I can tell is that you can load the u-boot.min from NAND, then attached to the Cortex-A8 ARM through the CCS/JTAG and see what is the current state of the DM814x registers.

    In the below wiki page is provided what exactly the u-boot.min is doing. Then you can check through the JTAG that all this below is already done.

    http://processors.wiki.ti.com/index.php/Understanding_u-boot-min_startup_for_DM814x

    Regards,
    Pavel