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Starterware problem on AM335X

Monica Sanchez
Prodigy 170 points

Hello,

I am working with an Embest SBC8600B board, which NAND Flash was erased. As a result, no bootloader propt is displayed at all. I only received the CCCCC string on the serial terminal.

Trying to solve this issue, I used Starterware to send uboot.bin and gpio.bin files, trough hyperterminal, which was ok.. So I tried other applications.

Just after I used the application nandReadWrite.bin, I tried to use another, but the board no longer responds.. I don't even receive the CCCC output, and I cannot send the uboot.bin file anymore.

What could have happened?

How could I fix it?

Thank you

PS. The sdcard is useless, since it didn´t work for booting or with starterware at all 

  • 0
    TI__Mastermind 21285 points

    Hello Monica,

    CCCCC is the ROM bootloader indicating that no valid boot image is found.  If you've executed a nand writing binary and you don't have CCCC anymore, chances are that something has been written to NAND that the RBL considers bootable.  Also, the nandReadWrite application was built for interfacing to a specific Micron flash present on the GP EVM so this may also be part of an issue (Embest board uses Hynix).  

    If the data on the NAND is causing this issue, then NAND must be removed as a boot option, if it is the first boot option.  Otherwise, there should be a way to intervene before NAND begins to boot.  From the quick operation manual, it appears that you have to short J5 to be able to boot from the TF card.

    I would recommend following the instructions on page 17 of the  Quick Operation Manual for booting from TF card.  You can stop uboot (there is typically a countdown given where you can stop the process) and use the nand commands in uboot to erase your nand.

    8132.SBC8600B Quick Operation Manual.pdf

  • 0 in reply to Michael S
    Prodigy 170 points

    Hello, Thank you for answering.

    You explained it fairly well, because I hadn´t understand what happened with the nandReadWrite application.

    I am having other problems with this board, and the TF card is not recognized, even if I short J5.  I already contacted the manufacturer for support. I hope after I can boot from the TF card, I will be able to fix this issue by following your recommendation.

    Thanks a lot.

    Monica

  • 0 in reply to Monica Sanchez
    Prodigy 10 points

    Hello all,

    I just bought the same board SBC8600B and trying to boot on TF card seems to be impossible also for me. I've put the three different OS on it (Linux, Android, WinCE) given in the DVD ROM but nothing happens. I also got the CCCC string on the terminal when I short JP5, so I understand the board doesn't recognize the TF card (which is new, just bought for that and formatted by HP USB Tools as said in the pdf document).

    The TF slot seems to not work well. Do I have to contact the manufacturer also ? Send it back to get another one ? Is it a manufacturing default ?

    Can I boot from the USB slot ?

    Greg