AM62L: security document

Hello Hong

Thank you. Sorry for my ambiguous words.

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1505958/am62l-upgrading-am62l-to-hs-se-with-otp-keywriter-for-am62xx

According to this E2E, OTP keywriter and Secure SDK etc..(software or Tool) will be Specific for different devices、

we want to know when do you plan to release those.

Regards,

Zhou

Hi Zhou,
Here're references on OTP Keywrite Lite which is used to program the customer public key hash to OTP efuse on HS-FS.
- u-boot
https://software-dl.ti.com/processor-sdk-linux/esd/AM62LX/11_00_15_05/exports/docs/linux/Foundational_Components/U-Boot/UG-Key-Writer-Lite.html
- TIFS
https://software-dl.ti.com/tisci/esd/latest/6_topic_user_guides/key_writer_lite.html
Best,
-Hong

Hi Hong 

1. Regarding the release schedule of the secure SDK for AM62Lx
From the following inquiry, it can be inferred that a secure SDK for AM62 is expected to be released. Is there a planned release for this in the future? Or do the two URLs you provided correspond to this?
e2e.ti.com/.../am62l-upgrading-am62l-to-hs-se-with-otp-keywriter-for-am62xx
I checked the two URLs, but the following information is unclear, and I cannot proceed with my considerations.
For AM62, there were descriptions in the secure SDK, so I am hopeful that there will be something similar for AM62L as well.
About the OTP build procedure
How to change the keys and key revision values included in the OTP
The version of OpenSSL used to create keys and certificates

■ The two URLs you provided
u-boot
software-dl.ti.com/.../UG-Key-Writer-Lite.html
TIFS
software-dl.ti.com/.../key_writer_lite.html
1. Regarding the SDK for building OTP
For AM62, the OTP KeyWriter binary was created using the MCU+SDK. Since there is no MCU for AM62L, I think we will only use PSDK (Yocto).
Is there a recipe available for building with Yocto?

Regards,

Zhou