AM62A7-Q1: How to trigger an SMS cold reset.

Fadong XUE Fadong XUE

Part Number: AM62A7-Q1

Tool/software:

Hello,teams

We would like to know how to trigger an SMS cold reset.

So that we can read RST_SRC_COLD_OUT_RST in the WKUP_CTRL_MMR0_RST_SRC register.

Best regards,

XUE Fadong

0 Swargam Anil 3 months ago

Hello XUE Fadong,

The SMS cold reset cannot be handled by the user, as it is managed by the DMSC core.

Could you please explain why you want to perform an SMS cold reset?

Regards,

Anil.

0 Fadong XUE Fadong XUE 3 months ago in reply to Swargam Anil

Hello,Anil

Thanks for your answer!

We want to trigger SMS cold reset when signature verification fails in SBL and record the reason for the restart.

Can we notify DMSC core to trigger SMS cold reset through the tisci interface?

Best regards,

XUE Fadong

+1 Swargam Anil 3 months ago in reply to Fadong XUE Fadong XUE

Hello XUE Fadong,

Fadong XUE Fadong XUE said:
Can we notify DMSC core to trigger SMS cold reset through the tisci interface?

No, this is not possible and there are no APIs to tell Reset the SMS could Reset.

In another way, you need to do like when the signature verification fails, write in any external memory and reset the SOC.

After the Reset, read the data from the external memory and confirm whether this Reset would be with the SMS could Reset or not.

Regards,

Anil.

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