How to set S32K3_Host debug permanently disabled?

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How to set S32K3_Host debug permanently disabled?

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wuxianlong
Contributor III

Hi , all

How to set  S32K3_Host debug permanently disabled?
In HSE_B RM, it is possible to disable JTAG. 1.png

In S32K3 RM - UTEST,  i can't find any more information.  2.png
BRs,
    xianlong

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danielmartynek
NXP TechSupport
NXP TechSupport

Unfortunately, It cannot be disabled, only ADKP (Application Debug Key/Password) protected.

 

BR, Daniel

 

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danielmartynek
NXP TechSupport
NXP TechSupport

Hi Xianlong,

If you have any question about the HSE_B FW, please create a ticket as the documentation is under NDA.

 

The information below is taken from the S32K3 RM.

Without the HSE FW, the MCU can be password protected:

danielmartynek_0-1670340158217.png

This can be done at CUST_DEL Life Cycle stage only.

Once the Life Cycle is advanced, the MCU is password protected.

 

With HSE FW:

danielmartynek_1-1670340599109.png

Please refer to HSE DEMO APP.

 

Regards,

Daniel

 

 

 

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peter793731677
Contributor I

hello, i also have a same question about this.

as you said, if I set/advance the LC status to OEM_PROD or IN_FIELD without provision ADK/P and also didn't enable HSE.

what will be happen? Dose it means that the JTAG debug shall be permanently disabled?

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wuxianlong
Contributor III

As I understand it, NXP deleted the relevant bit description in the DCM register, DCMDEB register- HSE_APP_DIS_FLD, HSE_DBG_EN_FLD, HSE_APP_DIS_OEM and HSE_DBG_EN_OEM bitfields are removed.

Disable debug can only be implemented using HSE-H, that is, paid version HSE.(in HSE_B I saw the API,but can not use)

Otherwise, only password protection can be used for authentication.
1.png
BRs,
xianlong

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wuxianlong
Contributor III

Hi,@danielmartynek

Thank you for your help, I have read the information of Debug projected by password. And i wonder can JTAG be  permanently disabled? where can i get more information.

BRs,
 

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danielmartynek
NXP TechSupport
NXP TechSupport

Unfortunately, It cannot be disabled, only ADKP (Application Debug Key/Password) protected.

 

BR, Daniel

 

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