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AGamb.4
AGamb.4
Associate II
June 15, 2022
Solved

Disable JTAG

  • June 15, 2022
  • 1 reply
  • 2237 views

Good morning,

I would like to know if I can disable the JTAG in the STM32MP1. Once my project is finished I do not want this interface to be active.

Is there a way to disable the JTAG/SWD interface with registers/fuses/OTP?

Kind regards,

Andrés

This topic has been closed for replies.
Best answer by Olivier GALLIEN

Hi @AGamb.4​ ,

Please refer to RM0436 chapter

3.6.6 BSEC debug configuration register (BSEC_DENABLE)

This register allow you to set debug capability by SW.

Either until next reboot through the register or definitely with OTP ( eg close device )

Olivier

1 reply

Olivier GALLIEN
Olivier GALLIENBest answer
Technical Moderator
June 20, 2022

Hi @AGamb.4​ ,

Please refer to RM0436 chapter

3.6.6 BSEC debug configuration register (BSEC_DENABLE)

This register allow you to set debug capability by SW.

Either until next reboot through the register or definitely with OTP ( eg close device )

Olivier

Olivier GALLIEN In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.
J
jan-feemers
Visitor II
February 23, 2024

Hi Oliver,

can you explain in more detail how to disable JTAG permanently via the OTP?

Can this be done via linux userspace?

We are using a STM32MP153.

 

Best Regards
Jan

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