This header file provides the API to manage an Arm PMSAv8-32 based Memory Protection Unit (MPU). More...

#include <rtems/score/basedefs.h>

Data Structures
struct	AArch32_PMSA_Section
	The section definition is used to initialize the Memory Protection Unit (MPU). More...

struct	AArch32_PMSA_Region
	The region definition is used to configure the Memory Protection Unit (MPU). More...

Macros
#define	AARCH32_PMSA_MIN_REGION_ALIGN 64

#define	AARCH32_PMSA_ATTR_EN 0x1U

#define	AARCH32_PMSA_ATTR_IDX_SHIFT 1

#define	AARCH32_PMSA_ATTR_IDX_MASK 0xeU

#define	AARCH32_PMSA_ATTR_IDX(_idx) ( ( _idx ) << AARCH32_PMSA_ATTR_IDX_SHIFT )

#define	AARCH32_PMSA_ATTR_XN 0x40U

#define	AARCH32_PMSA_ATTR_AP_SHIFT 7

#define	AARCH32_PMSA_ATTR_AP_MASK 0x18U

#define	AARCH32_PMSA_ATTR_AP(_ap) ( ( _ap ) << AARCH32_PMSA_ATTR_AP_SHIFT )

#define	AARCH32_PMSA_ATTR_AP_EL1_RW_EL0_NO 0x0U

#define	AARCH32_PMSA_ATTR_AP_EL1_RW_EL0_RW 0x1U

#define	AARCH32_PMSA_ATTR_AP_EL1_RO_EL0_NO 0x2U

#define	AARCH32_PMSA_ATTR_AP_EL1_RO_EL0_RO 0x3U

#define	AARCH32_PMSA_ATTR_SH_SHIFT 9

#define	AARCH32_PMSA_ATTR_SH_MASK 0x600U

#define	AARCH32_PMSA_ATTR_SH(_sh) ( ( _sh ) << AARCH32_PMSA_ATTR_SH_SHIFT )

#define	AARCH32_PMSA_ATTR_SH_NO 0x0U

#define	AARCH32_PMSA_ATTR_SH_RES 0x1U

#define	AARCH32_PMSA_ATTR_SH_OUTER 0x2U

#define	AARCH32_PMSA_ATTR_SH_INNER 0x3U

#define	AARCH32_PMSA_MEM_DEVICE_NG_NR_NE 0x00U

#define	AARCH32_PMSA_MEM_DEVICE_NG_NR_E 0x04U

#define	AARCH32_PMSA_MEM_DEVICE_NG_R_E 0x08U

#define	AARCH32_PMSA_MEM_DEVICE_G_R_E 0x0cU

#define	AARCH32_PMSA_MEM_OUTER_WTT 0x00U

#define	AARCH32_PMSA_MEM_OUTER_NC 0x40U

#define	AARCH32_PMSA_MEM_OUTER_WBT 0x40U

#define	AARCH32_PMSA_MEM_OUTER_WTNT 0x80U

#define	AARCH32_PMSA_MEM_OUTER_WBNT 0xc0U

#define	AARCH32_PMSA_MEM_OUTER_RA 0x20U

#define	AARCH32_PMSA_MEM_OUTER_WA 0x10U

#define	AARCH32_PMSA_MEM_INNER_WTT 0x00U

#define	AARCH32_PMSA_MEM_INNER_NC 0x04U

#define	AARCH32_PMSA_MEM_INNER_WBT 0x04U

#define	AARCH32_PMSA_MEM_INNER_WTNT 0x08U

#define	AARCH32_PMSA_MEM_INNER_WBNT 0x0cU

#define	AARCH32_PMSA_MEM_INNER_RA 0x02U

#define	AARCH32_PMSA_MEM_INNER_WA 0x01U

#define	AARCH32_PMSA_MEM_ATTR(_ma0, _ma1, _ma2, _ma3) ( ( _ma0 ) \| ( ( _ma1 ) << 8 ) \| ( ( _ma2 ) << 16 ) \| ( ( _ma3 ) << 24 ) )

#define	AARCH32_PMSA_MEM_ATTR_DEFAULT_CACHED

#define	AARCH32_PMSA_MEM_ATTR_DEFAULT_UNCACHED

#define	AARCH32_PMSA_MEM_ATTR_DEFAULT_DEVICE AARCH32_PMSA_MEM_DEVICE_NG_NR_NE

#define	AARCH32_PMSA_CODE_CACHED

#define	AARCH32_PMSA_CODE_UNCACHED

#define	AARCH32_PMSA_DATA_READ_ONLY_CACHED

#define	AARCH32_PMSA_DATA_READ_ONLY_UNCACHED

#define	AARCH32_PMSA_DATA_READ_WRITE_CACHED

#define	AARCH32_PMSA_DATA_READ_WRITE_UNCACHED

#define	AARCH32_PMSA_DATA_READ_WRITE_SHARED

#define	AARCH32_PMSA_DEVICE

#define	AARCH32_PMSA_DATA_READ_WRITE_DEFAULT AARCH32_PMSA_DATA_READ_WRITE_CACHED

#define	AARCH32_PMSA_DEFAULT_SECTIONS
	The default section definitions shall be used by the BSP to define _AArch32_PMSA_Sections.

Functions
void	_AArch32_PMSA_Initialize (uint32_t memory_attributes_0, uint32_t memory_attributes_1, const AArch32_PMSA_Section *sections, size_t section_count)
	Initializes the Memory Protection Unit (MPU).

size_t	_AArch32_PMSA_Map_sections_to_regions (const AArch32_PMSA_Section sections, size_t section_count, AArch32_PMSA_Region regions, size_t region_max)
	Maps the section definitions to region definitions.

void	_AArch32_PMSA_Initialize_default (void)
	Initializes the Memory Protection Unit (MPU) using the section definitions with default memory attributes.

Variables
const AArch32_PMSA_Section	_AArch32_PMSA_Sections []
	This array provides section definitions to initialize the memory protection unit (MPU).

const size_t	_AArch32_PMSA_Section_count
	This constant provides the count of elements in _AArch32_PMSA_Sections.

Detailed Description

This header file provides the API to manage an Arm PMSAv8-32 based Memory Protection Unit (MPU).

Data Structures

Macros

Functions

Variables

Detailed Description