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AM2431: boot failed

Cherry Zhou
Mastermind 22235 points
Part Number: AM2431
Other Parts Discussed in Thread: AM2434,

Hi team,

Previously, the AM2434 was booted in QSPI mode, and the boot program developed using the GD25Q16E Flash can boot up and load the running app normally on a custom board. Now replaced with the AM2431, with the same hardware, it does not boot and does not load the app.

The SBL debugger was previously written to 0x600000000 of the Flash. When debugging, the address 0x418xxxxx is entered even when the SBL program is loaded. It looks like the MCU does not recognize the boot mode settings at all? Why's this? 

And read back BootMode Status（0x43000030）=0x00000d13，BootMode Config（0x43000034）=0x00000d13, indicating the boot pin representing the external configuration also does point to the QSPI Flash. 

Could you help look into this case? Thanks.

Best Regards,

Cherry

  • 0
    TI__Guru 54905 points

    Hi Cherry,

    If the new chip you used is a HS-FS device, then the hs-fs version of the SBL_QSPI (SBL_OSPI, SBL_NULL) need to be flashed to the  flash and the appImage needs to be signed and re-flashed too.

    Please see the URL for details: AM243x MCU+ SDK: HS FS Migration Guide

    Best regards,

    Ming

  • 0 in reply to Ming Wei
    TI__Mastermind 22235 points

    Hi Ming,

    Thank you for the support.

    Ming Wei said:
    If the new chip you used is a HS-FS device,

    GD25Q16E is being used, not an HS-FS device.

    Also, is the signature of the AM2434 different from the AM2431 startup file?

    And regarding AM2434 and AM2431 chips, are there any differences between the HS-FS version and the GP version? 

    Thanks and regards,

    Cherry

  • 0 in reply to Cherry Zhou
    TI__Guru 54905 points

    Hi Cherry,

    The new AM2431 most likely is a HS-FS device, because we have stopped the shipment of GP device. All AM243x devices since end of last year should be HS-FS devices.

    According to your description, the only change customer made is that AM2431 is used to replace the AM2434. The solution I gave above should resolve their problem.

    Best regards,

    Ming