Boot IMX8MM using USB serial port

[ajita02]

Hi all,

We have a custom board which uses IMX8MM. I want to boot board using serial port. We dont have eMMC support on board. Also board is not booting through sd card slot.

Thanks,

Ajita
iMX8MMINI

[Dhruvit]

Hi @ajita02,

I hope you are doing well.

Please make sure that you have used the correct commands. Please share the uuu commands that were used to flash the board and board schematics for further debugging.

Please make sure that boot mode and CFG pins are set correctly.

Thanks & Regards,
Dhruvit Vasavada

[ajita02]

Hi @Dhruvit,

Is it possible to boot kernel image through UUU? Our board dont have emmc support and our SD card is not booting. What can be done in this case?

I made bootmode switch as "1010xxxxxx". I have built "imx-image-full". The image has been tested with imx8mm evk board.

Thanks,

Ajita

[Dhruvit]

Hi @ajita02,

I hope you are doing well.

UUU can boot u-boot and can flash kernel image and rootfs.

If emmc is not available, then one can flash kernel image and rootfs to sd card using uuu.

Please change the DIP switches to serial download mode.

Please use the below command.

uuu -b sd_all <imx-boot-*> <rootfs/imx-image-full image>

After flashing one can change DIP switches back to internal boot mode & SD card.

Thanks & Regards,
Dhruvit Vasavada