How to properly configure STM32U585 to use DMA in secure mode (TZEN = 1) to send data from internal Flash (non secure zone) to Hash (in secure mode)?

[Aurelien1]

Hi,

I want to know a properly way do to that.

If i use standard configuration I run hard fault as soon as DMA start (linklist mode) (HAL_HASHEx_SHA256_Start_DMA).

I put Fault Analyser details

Source/Destination secure bit are set before calling this function.

Can someone help me?

Thanks

Have a good day.

Aurélien

[Bubbles]

Hi @Aurelien​,

the DMA channel has to be configured secure, then for the transfer itself the SSEC attribute must be zero and DSEC attribute set to 1.

BR,

J

[Aurelien1]

HI, I don't see your return I will test it.