imx8qxp eMMC boot issue

[zhengguang_yang]

Hi 

I'm using imx8qxp, Yocto 3.0.

The same image boot normally on the SD card, but after burning to EMMC, there is no log output in the uboot phase, and the kernel phase is normal.

I feel this phenomenon is so strange and I don't have any ideas, so I'd like to ask if you have any good ideas

[jimmychan]

Which board are you using?

Do you change the boot mode to boot from the EMMC?

[zhengguang_yang]

Hi Jimmychan:

Thank you for your reply.

We use our customized board.

Boot mode has been modified to boot from EMMC.

[jimmychan]

After you boot up from the SD card, can you mount the EMMC in Linux? Do you see any content in the EMMC?

[zhengguang_yang]

After starting from the SD card, we can successfully mount the EMMC, and the same content as the SD card can be seen in the EMMC.

Unplug the SD card, the EMMC boot normally, but there is no log output in the uboot phase.

[jimmychan]

"EMMC boot normally, but there is no log output in the uboot phase".

Sorry, what does it means? do you mean the board can normal boot up but no console output from debug uart? 

[zhengguang_yang]

Yes, there is no log output in the uboot phase, and the kernel phase is normal.

[jimmychan]

Have you try to program the u-boot (in your SD card) to the EMMC?