S32KのトピックRe: How to set S32K3_Host debug permanently disabled?

How to set S32K3_Host debug permanently disabled?

wuxianlong — Tue, 06 Dec 2022 07:24:58 GMT

Hi , all

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

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

Re: How to set S32K3_Host debug permanently disabled?

danielmartynek — Tue, 06 Dec 2022 15:32:03 GMT

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:

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:

Please refer to HSE DEMO APP.

Regards,

Daniel

Re: How to set S32K3_Host debug permanently disabled?

wuxianlong — Wed, 07 Dec 2022 02:38:24 GMT

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,

Re: How to set S32K3_Host debug permanently disabled?

danielmartynek — Wed, 07 Dec 2022 10:05:55 GMT

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

BR, Daniel

Re: How to set S32K3_Host debug permanently disabled?

peter793731677 — Fri, 28 Jul 2023 05:37:14 GMT

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?

Re: How to set S32K3_Host debug permanently disabled?

wuxianlong — Tue, 01 Aug 2023 10:49:08 GMT

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.

BRs,
xianlong