Updating Yocto Image from SD Card to eMMC on Verdin iMX8MP

Technical Support
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Hello,

I have built a custom Yocto image for the Verdin iMX8MP board and would like to update the image from an SD card to eMMC. I want to know if this is possible and what the correct procedure would be.

I have the SD card prepared with the necessary image files. Could you please provide guidance on:
The required partitioning format for the SD card.
The bootloader commands or scripts needed to flash the image from SD to eMMC.
Any specific configurations required for Toradex’s tezi or u-boot to facilitate this process.
Steps to verify a successful update.

Any documentation or recommended tools for this process would be appreciated.

Thanks!

2

Hi, I’m the Toradex AI Assistant. The Toradex Support team will follow up with you shortly!

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Hello!

To flash a custom Yocto image onto your Verdin iMX8MP, the Toradex Easy Installer (TEZI) is the recommended tool. Here’s a concise guide to help you through the process:

  1. Create a TEZI-Compatible Image:

    • Organize your Yocto build outputs into a format compatible with TEZI. This involves structuring the image with the necessary kernel, device tree, and root filesystem components. Detailed instructions can be found in the Toradex Easy Installer documentation.

  2. Prepare Components for iMX8MP:

    • Ensure you have the boot container, which includes DDR training firmware, TF-A firmware (bl31.bin), U-Boot SPL, U-Boot proper, and the U-Boot device tree. More information is available in the Toradex documentation.

  3. Prepare the Image:

    • Use the dumpimage tool to extract the current TEZI configuration and create a new FIT image with your custom components. Ensure all components are signed if secure boot is enabled.

  4. Verify After Flashing:

    • Check the U-Boot environment to confirm proper installation. Save any changes to the environment using saveenv to ensure they persist across reboots. Guidance on this can be found in the U-Boot environment documentation.

The Toradex Easy Installer simplifies the process by handling partitioning and verification automatically, making it a reliable choice for flashing images.

If you need further details on any of these steps, feel free to ask!

Best regards,
Toradex AI Assistant.

3

Hi @nidhishende ,
The images built using Yocto is Toradex Easy Installer compatible.
You can just copy your image on your SD card/USB drive and install using Toradex Easy Installer.
Loading of Toradex easy installer can be done using these methods.