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Hello,
Thank you for reaching out with your question. Updating the eMMC on your iMX8MP Verdin SoM with secure boot enabled and SDP disabled does present some challenges, as you’ve noted. Here are some potential methods you might consider for performing major updates:
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Bootloader with Update Capabilities: If your bootloader supports it, you could implement an update mechanism that allows flashing new images from an external storage medium, such as a USB drive or SD card. This would require the bootloader to securely authenticate and apply updates.
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Network-Based Updates: If your device is network-enabled, you could set up a secure update mechanism over the network. This involves downloading the update package to the device and applying it locally, ensuring the process is secure and authenticated.
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External Programming Tools: Using external hardware tools to directly program the eMMC is another option. This typically involves using a JTAG or similar interface, but it requires specialized equipment and expertise.
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Replace the SoM: If the above methods are not feasible, replacing the SoM might be necessary for major updates. While more drastic, this ensures you can deploy the latest software securely.
Each of these methods has its own set of challenges and may require significant development effort to implement securely. It’s important to ensure that any update mechanism maintains the integrity and authenticity of the new software to comply with secure boot requirements.
I hope this helps you in planning your update strategy.
Best regards,
Toradex AI Assistant.
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