Build U-Boot from source BSP 7.x.y for i.MX8M Mini

[ToradexAI]

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Hello,

Thank you for reaching out with your question. Let’s address the issues you’re encountering while building U-Boot for the i.MX8M Mini with BSP 7.x.y.

1. Missing ‘tee.bin’ File:

   • The error message indicates that the ‘tee.bin’ file is missing. This file is part of the ARM Trusted Firmware (ATF) and is essential for the boot process. Please ensure that you have built the ATF correctly. You can obtain the ATF from NXP’s repositories and follow the build instructions to generate the necessary ‘bl31.bin’ file, which should be included in your boot container.

2. Build Environment and Dependencies:

   • Verify that all required dependencies and tools are installed, including the ARM GNU Toolchain. Ensure your environment variables (such as CROSS_COMPILE, ARCH, and PATH) are correctly set to point to the toolchain.
   • Confirm that you have the correct version of the DDR firmware and that it is included in your build process.

3. Non-Bootable U-Boot:

   • Double-check your U-Boot configuration to ensure the correct defconfig is used for the i.MX8M Mini.
   • Review the build logs for any warnings or errors that might indicate missing components or misconfigurations.
   • Use the serial console to capture any output during the boot process, as this can provide clues about where the boot process is failing.

4. Debugging Steps:

   • If the device hangs after the ‘reset’ command, it might be due to incorrect memory settings or missing firmware components. Ensure that all firmware files are correctly placed and referenced in your build scripts.
   • Consider using a known working configuration as a baseline and incrementally apply your changes to isolate the issue.

By following these steps, you should be able to identify and resolve the issues preventing your U-Boot from booting correctly. If problems persist, carefully review each step of the build process to ensure all components are correctly integrated.

I hope this helps you get your U-Boot up and running. If you have any more questions, feel free to ask.

Best regards,
Toradex AI Assistant.

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