R5 MPU Functions

Introduction

Functions
void	SDL_R5MPU_Enable (uint32_t enable)
	Enable/disable the Memory Protection Unit (MPU) More...
uint32_t	SDL_R5MPU_getNumRegions (void)
	Get the number of unified MPU regions supported. More...
void	SDL_R5MPU_Cfg (uint32_t regionNum, uint32_t baseAddrRegVal, uint32_t sizeRegVal, uint32_t accessCtrlRegVal)
	Configure an MPU region. More...
int32_t	SDL_R5MPU_VerifyCfg (uint32_t regionNum, uint32_t baseAddrRegVal, uint32_t sizeRegVal, uint32_t accessCtrlRegVal)
	Verify an MPU region that is previously configured. More...
void	SDL_R5FMPU_enableRegion (uint32_t regionNum, uint32_t enable)
	Enable/disable an MPU region. More...
int32_t	SDL_R5MPU_VerifyEnableRegion (uint32_t regionNum, uint32_t enable)
	Verifies the previously called Enable/disable an MPU region API. More...
void	SDL_R5MPU_readStaticRegisters (SDL_MPU_staticRegs *pStaticRegs, uint32_t regionNum)
	MPU API to Read the Static Registers. This function reads the values of the static registers such as System Control Register, MPU Type Register and MPU Region Number Register. More...

Function Documentation

SDL_R5MPU_Enable()

void SDL_R5MPU_Enable

(

uint32_t

enable

)

Enable/disable the Memory Protection Unit (MPU)

This function is used to enable or disable the MPU.

Parameters

enable

[IN] 0=MPU is disabled, otherwise MPU is enabled

Returns

None

SDL_R5MPU_getNumRegions()

uint32_t SDL_R5MPU_getNumRegions

(

void

)

Get the number of unified MPU regions supported.

This function is used to get the number of unified MPU regions supported.

Returns

The number of unified MPU regions supported

SDL_R5MPU_Cfg()

void SDL_R5MPU_Cfg	(	uint32_t	regionNum,
		uint32_t	baseAddrRegVal,
		uint32_t	sizeRegVal,
		uint32_t	accessCtrlRegVal
	)

Configure an MPU region.

This function is used to configure an MPU region.

The value arguments provided to this function are directly written into the corresponding R5 system register. As a result, the values must be constructed per the expected register format.

See the "MPU memory region programming registers" section of the ARM Cortex R5 TRM for more information.

Parameters

regionNum	[IN] Region number
baseAddrRegVal	[IN] Value written to the MPU Region Base Address Register
sizeRegVal	[IN] Value written to the MPU Size and Enable Register
accessCtrlRegVal	[IN] Value written to the MPU Region Access Control Register

Returns

None

SDL_R5MPU_VerifyCfg()

int32_t SDL_R5MPU_VerifyCfg	(	uint32_t	regionNum,
		uint32_t	baseAddrRegVal,
		uint32_t	sizeRegVal,
		uint32_t	accessCtrlRegVal
	)

Verify an MPU region that is previously configured.

This function is used to verify the previous configure an MPU region API.

The value arguments provided to this function are directly verfied against the corresponding R5 system register. As a result, the values must be constructed per the expected register format.

See the "MPU memory region programming registers" section of the ARM Cortex R5 TRM for more information.

Parameters

regionNum	[IN] Region number
baseAddrRegVal	[IN] Value written to the MPU Region Base Address Register
sizeRegVal	[IN] Value written to the MPU Size and Enable Register
accessCtrlRegVal	[IN] Value written to the MPU Region Access Control Register

Returns

None

SDL_R5FMPU_enableRegion()

void SDL_R5FMPU_enableRegion	(	uint32_t	regionNum,
		uint32_t	enable
	)

Enable/disable an MPU region.

This function is used to enable or disable an MPU region.

Parameters

regionNum	[IN] Region number
enable	[IN] 0=The specified MPU region is disabled, otherwise it is enabled

Returns

None

SDL_R5MPU_VerifyEnableRegion()

int32_t SDL_R5MPU_VerifyEnableRegion	(	uint32_t	regionNum,
		uint32_t	enable
	)

Verifies the previously called Enable/disable an MPU region API.

This function is used to verify enable or disable an MPU region.

Parameters

regionNum	[IN] Region number
enable	[IN] 0=The specified MPU region is disabled, otherwise it is enabled

Returns

SDL_PASS for success otherwise SDL_EFAIL

SDL_R5MPU_readStaticRegisters()

void SDL_R5MPU_readStaticRegisters	(	SDL_MPU_staticRegs *	pStaticRegs,
		uint32_t	regionNum
	)

MPU API to Read the Static Registers. This function reads the values of the static registers such as System Control Register, MPU Type Register and MPU Region Number Register.

Parameters

pStaticRegs	[IN] Pointer to the static registers structure
regionNum	[IN] Region number

Returns

None