IMX8MP returns No HAB Events Found for unsigned Kernel image.

kartheek — Thu, 09 Oct 2025 07:24:18 GMT

Hi,

I'm working on Secure Boot using the UG10163 (10.9 Security Reference Design). I generated a wic image that includes signed bootloader and signed kernel images.

After flashing this image to an SD card, I manually replaced the signed kernel image in the /boot folder with an unsigned kernel image.

Then, on the target device, I executed the following command in U-Boot:

hab_auth_img ${loadaddr} ${filesize} 0x1a90000

I expected HAB events to be triggered due to the unsigned kernel image, but the output showed:

No HAB Events Found!

Why is no HAB event being reported even though the kernel image is unsigned?
I've attached the log below for reference.

Thanks,

Kartheek

Re: IMX8MP returns No HAB Events Found for unsigned Kernel image.

Harvey021 — Fri, 10 Oct 2025 08:44:19 GMT

Hi,

Are these steps tested after board reboot? and make sure if that the singed image was replaced.

Regards

Harvey

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IMX8MP returns No HAB Events Found for unsigned Kernel image.

Re: IMX8MP returns No HAB Events Found for unsigned Kernel image.