Verdin iMX8MP eMMC Flash

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It sounds like you’re encountering issues with the boot process on the Verdin iMX8M Plus SoM after attempting to flash your own bootloader and image using UUU. Here are some steps and considerations to help you troubleshoot and resolve the issue:

1. Verify U-Boot Configuration:

   • Ensure that the U-Boot configuration in your Yocto build is correctly set up for the Verdin iMX8M Plus. The device tree and configuration files should match the hardware specifications of the SoM.

2. Check Boot Device Order:

   • The boot order might be causing the issue. Ensure that the boot order in U-Boot is set to prioritize the eMMC if that’s where you want to boot from. You can modify the boot order in the U-Boot environment variables.

3. Use Toradex Easy Installer:

   • Since you were able to boot using the Toradex Easy Installer, it indicates that the hardware is functioning correctly. Use the Easy Installer to flash a known good image (like Torizon or BSP 6) and then try to boot from it. This can help you verify that the eMMC is working correctly.

4. Flashing with UUU:

   • When using UUU, ensure that you are using the correct UUU script and image files. The script should correctly partition the eMMC and flash the bootloader, kernel, and root filesystem.
   • Example UUU command:

     sudo uuu -b emmc your_image.wic
     

   • Make sure the .wic image is correctly generated and contains all necessary partitions (bootloader, kernel, rootfs).

5. Check for Errors in U-Boot SPL:

   • The error message Can't found uboot image in 640K range suggests that the SPL is unable to find the U-Boot image. Ensure that the U-Boot image is correctly placed in the expected location on the eMMC.
   • Verify the partition layout and ensure that the U-Boot image is within the first 640K of the boot partition.

6. Rebuild U-Boot and Yocto Image:

   • If the issue persists, consider rebuilding U-Boot and the Yocto image from scratch. Ensure that all patches and configurations are correctly applied.
   • Follow the Toradex Yocto Project documentation to build the image:
     Toradex Yocto Project

7. Consult Toradex Support:

   • If you continue to face issues, consider reaching out to Toradex technical support. They can provide more specific guidance and help troubleshoot the problem.

By following these steps, you should be able to identify and resolve the issue with flashing and booting the Verdin iMX8M Plus SoM using UUU.

Please, also check if these links can help you solve your problem:

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