Newbie Seeking Help: Modifying U-Boot from L2.6.35_1.1.0_130130 to Disable Battery Checks

[maloneccc]

Hello everyone,

I’m working on a custom i.MX28-based board without a battery, and I need to adapt the U-Boot version included in the L2.6.35_1.1.0_130130_images_MX28 package to skip battery-related checks during boot. My apologies if this is a basic question-I’m still learning!
Key Issues:

U-Boot Modifications:

The stock U-Boot in L2.6.35_1.1.0_130130_images_MX28  performs battery checks, which cause boot failures on my board. I’d like to disable these checks.

Where in the U-Boot source (specific files/functions) are these checks implemented? Are there known patches or configuration flags to bypass them?

Request:

Guidance on locating and modifying the battery-check logic in U-Boot.

Suggestions for compatible Ubuntu and toolchain versions if the original BSP components are too outdated.

Thank you in advance for your patience and expertise!

[Bio_TICFSL]

Hello,

You can check the uboot document for MX28:

https://community.nxp.com/pwmxy87654/attachments/pwmxy87654/imx-processors/82732/1/uboot_mx28.pdf

Since this devices is too old there is no ubuntu on this however you can check the reference manual:

https://community.nxp.com/pwmxy87654/attachments/pwmxy87654/imx-processors/77425/1/MX28_EVK_Linux_Re...

Regards

[maloneccc]

Aquí tienes un mensaje en inglés para el foro:

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Hi Bio_TICFSL,

Thank you so much for the information. I really appreciate your help and. I’m going to give it a try.

Thanks again!

Best regards,
MaloneCC

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