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CSEC

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hajianik
Contributor V

Hi,

Target is S32K148, ONCE I ENABLED THE PARTION AND CSEC (FCCOB [2] = 0x03;)

Do I NEED IT D TO THIS INITIALIZATION ACROSS EVERY POWER ON REST?

which NONE VOULITILE REGISTER  I need to check if don't have to  this,?

I know once the part is partitioned , I don't have to it on every power up, however I am NOT certain about the CSEC ENABLING ACROSS POWE ON RESET.

THANKS,

kOOROSH HAJIANI

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lukaszadrapa
NXP TechSupport
NXP TechSupport

Hi,

there's an application note including SW examples which provides more details:

https://www.nxp.com/webapp/Download?colCode=AN5401

https://www.nxp.com/webapp/Download?colCode=AN5401SW&docLang=en

Initialization (partition and initial loading of keys) is supposed to be done only once - in factory. See example 1_Configure_part_and_Load_keys in the app note.

It's even not possible to do the partitioning again. First it is necessary to delete the partition (there's a special procedure for this - see 5_Resetting_flash_to_the_factory_state), then it is necessary to do mass erase and then you can do the partitioning again.

Regards,

Lukas

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