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Linux/PROCESSOR-SDK-AM437X: AM437X-SK accidentally erased EEPROM

Andy Dracup
Prodigy 70 points
Part Number: PROCESSOR-SDK-AM437X


Tool/software: Linux

Hi,

I accidentally erased the EEPROM on my AM437x Start kit board and now it won't boot into U-Boot: 

CCCCCCCC

U-Boot SPL 2014.07-gfb6ab76 (Jul 06 2015 - 16:10:49)
Incorrect magic number (0xffffffff) in EEPROM
Could not get board ID.
 Board '\' not supported

What's the best way for me to restore the EEPROM contents?

Thanks,

Andy

  • 0
    TI__Guru 55345 points

    Hello Andy,

    You probably erased the first bit of your EEPROM content. To fix this.

    Download and install the latest AM437x Processor SDK.

    Apply this patch to hardcode the board name to AM43__SK.

    cd <Processor SDK>/board-support/u-boot-<version>/
    git apply 0001-AM437x-Hardcode-EEPROM-board-name-to-AM43__SK.patch

    Go to the top Processor SDK directory and type make u-boot_clean && make u-boot to rebuild the U-Boot.

    cd ../../
    make u-boot_clean && make u-boot

    Copy the new MLO and u-boot.img to SD card's boot partition and power on your board.

    Stop the booting in U-Boot console and reprogram the EEPROM by these commands in U-Boot or by these in Linux.

    You can find the AM437x SK EEPROM I2C ID Memory layout in the AM437x StarterKit EVM Hardware User's Guide here in Table 5.

    Best regards,
    Kemal

  • 0 in reply to Kemal R. Shakir
    Prodigy 70 points
    Thanks very much. I can now boot my board. The only suggestion I have is to correct the Board Name in Table 5 in the User's Guide. It should be "AM43__SK', not "XXXXXXX".
  • 0 in reply to Andy Dracup
    TI__Guru 55345 points

    Thank you for the suggestion. I've submitted documentation feedback based on your comment.