AM2432: OTP keywriter - logs and debugging

ma2teo

Part Number: AM2432

Dear TI Experts,
In the AM243X OTP keywriter project, how is it possible modify the UART dedicated to DMSC logs?.

From the documentation: " ... Once keywriter application is booted. R5 SBL and DMSC logs can be collected on UART0 and UART1 respectively ... " the UART1 is dedicated to DMSC logs, in fact the project is designed for the Launchpad AM243x (ALX Package). Unfortunately in my custom board there is no UART1 available, just the UART0. So I would like redirect the DMSC log towards the UART0.

Thanks in advance.

Regards,
Matteo

over 2 years ago

0 Aakash Kedia over 2 years ago

TI__Mastermind 26025 points

Hi ma2teo,

ma2teo said:
I would like redirect the DMSC log towards the UART0.

What is the intent of the same ?

Best Regards,
Aakash

0 ma2teo over 2 years ago in reply to Aakash Kedia

Prodigy 120 points

Hi Aakash,
Thanks for the answer.

Aakash Kedia said:
What is the intent of the same ?

It is useful for follow/debug the writing of the keys inside the OTP by the DMSC.

Thanks.
Regards,
Matteo

0 Aakash Kedia over 2 years ago in reply to ma2teo

TI__Mastermind 26025 points

Hi ma2teo,

Let me check this internally and get back to you on this.

Best Regards,
Aakash

0 Aakash Kedia over 2 years ago in reply to Aakash Kedia

TI__Mastermind 26025 points

Hi ma2teo,

We have raised this as an internal requirement as this is identified as a feature gap.

We might be able to plan this for upcoming releases. Do you have any timelines requirement of this feature ? This will help make a case for this feature amidst the priority of other features.

Best Regards,
Aakash

0 ma2teo over 2 years ago in reply to Aakash Kedia

Prodigy 120 points

Hi Aakash,
Thanks for the answer.

Our OTP keys writing is scheduled in the next days. We are solving the last doubts regarding the secure boot procedure in general, then we proceed with the e-fusing.
Currently we are using the OTP keywriter version 08.04.
The possibility to redirect the DMSC log toward an arbitrary UART peripheral will be precious in this experimental/exploratory phase, so when the next version of OTP Keywriter will be available, we will use it immediately.

Thanks again for the support.
Regards,
Matteo

0 Aakash Kedia over 2 years ago in reply to ma2teo

TI__Mastermind 26025 points

Hi ma2teo,

Currently, the feature is being targeted for 9.1 release of OTP Key Writer which is planned for Nov'23. I hope that is fine.

Best Regards,
Aakash

0 ma2teo over 2 years ago in reply to Aakash Kedia

Prodigy 120 points

Hi Aakash,

Thanks for sharing the roadmap.

Regards,
Matteo

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AM2432: OTP keywriter - logs and debugging