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Linux/AM4377: QSPI boot issue

Rohit Rampa
Intellectual 460 points
Part Number: AM4377


Tool/software: Linux

Hi,

We have a custom board based on AM437x IDK.

We are currently booting from QSPI flash. Uboot version from the SDK is 2017.1

The issue is, if we dont connect the serial debug cable to the board and to the host PC, Uboot is stuck at auto boot prompt.

I tired disabling the boot delay(bootDelay=0) to ensure any noise from the UART is not feeding distorted characters to auto boot command prompt.

Still Uboot is stuck Autoboot prompt before starting the kernel.

If  I connect the serial cable at this point, type the boot command, Uboot boots the kernel successfully.

The defconfig used for QSPI boot mode: am43xx_evm_qspiboot_defconfig

 

Please let me know if you have any inputs for this issue.

 

Thannks in advance

Rohit

  • 0
    TI__Guru 55345 points

    Hello Rohit,

    Please, try to find from where the serial line captures that noise. Is it from the environment or is it caused by a current leakage? If you want to disable the autoboot with no delay and not check for abort, set the CONFIG_BOOTDELAY in kernel's menuconfig to -2.



    Best regards,
    Kemal