Failed to find an OP-TEE supplicant device in BSP36

[milon]

Hi NXP,

Here is a problem about "faided to find an OP-TEE supplicant device" when I try to run optee exmaples in S32G BSP36 system.

I have edit /conf/local.conf and appended the following line:

DISTRO_FEATURES:append = " optee"

Then use "bitbake fsl-image-auto" to build the image.

When I try to run "tee-supplicant &", it report the error:

"ERR [263] TSUP:main:819: failed to find an OP-TEE supplicant device"

By the way, I find a warning print in booting BL31 as below:

NOTICE: BL2: Booting BL31
I/TC:
I/TC: Non-secure external DT found
I/TC: OP-TEE version: bsp36.0-3.18-dev (gcc version 11.3.0 (GCC)) #1 Fri Mar 24 13:56:10 UTC 2023 aarch64
I/TC: WARNING: This OP-TEE configuration might be insecure!
I/TC: WARNING: Please check https://optee.readthedocs.io/en/latest/architecture/porting_guidelines.html
I/TC: Primary CPU initializing
I/TC: Primary CPU switching to normal world boot

Could you help check it, and give some support to solve the problem?

Thanks.

[MayanksPatel · Accepted solution]

Hi @milon,

Thank you for reaching out to us.

It seems that during booting the Linux, the tee-supplicant is already loaded. you can check it by doing "ps -elf".

you can kill the already loaded tee-supplicant and run again or move forward with running the example application.

Hope this helps you.

Thanks,

Mayank s Patel

[milon]

Thanks a lot, the problem is solved.

[MayanksPatel]

Hi @milon,

Can we close this ticket now?

[milon]

Yes, please.