SAU Functions

Secure Attribution Unit (SAU) functions related to TrustZone for Armv8-M. More...

Functions
void	TZ_SAU_Disable (void)
	Disable Security Attribution Unit (SAU)
void	TZ_SAU_Enable (void)
	Enable Security Attribution Unit (SAU)
void	TZ_SAU_Setup (void)
	Setup Secure Attribute Unit (SAU) and non-secure interrupts.

Description

Secure Attribution Unit (SAU) functions related to TrustZone for Armv8-M.

The Secure Attribution Unit (SAU) functions SAU

Note

A SAU is always present if the security extension is available. The functionality differs if the SAU contains SAU regions. If SAU regions are available is configured with the macro __SAUREGION_PRESENT (see Configuration of the Processor and Core Peripherals).

Function Documentation

TZ_SAU_Disable()

void TZ_SAU_Disable

(

void

)

Disable Security Attribution Unit (SAU)

Disables the Security Attribution Unit (SAU).

TZ_SAU_Enable()

void TZ_SAU_Enable

(

void

)

Enable Security Attribution Unit (SAU)

Enables the Security Attribution Unit (SAU).

TZ_SAU_Setup()

void TZ_SAU_Setup

(

void

)

Setup Secure Attribute Unit (SAU) and non-secure interrupts.

The function TZ_SAU_Setup uses the settings in the TrustZone setup: partition_<Device>.h to initialize the Secure Attribute Unit (SAU) and define non-secure interrupts. It is called from the function SystemInit.