aarch64-mmu.h File Reference

AArch64 MMU configuration. More...

#include <bsp/fatal.h>
#include <bsp/linker-symbols.h>
#include <bsp/start.h>
#include <bsp/utility.h>
#include <bspopts.h>
#include <libcpu/mmu-vmsav8-64.h>
#include <rtems/score/aarch64-system-registers.h>

Go to the source code of this file.

Data Structures
struct	aarch64_mmu_config_entry
struct	aarch64_mmu_control
	This structure represents the state to maintain the MMU translation tables. More...

Macros
#define	AARCH64_MMU_DEFAULT_SECTIONS

Functions
rtems_status_code	aarch64_mmu_set_translation_table_entries (aarch64_mmu_control *control, const aarch64_mmu_config_entry *config)
	Sets the MMU translation table entries associated with the memory region.
void	aarch64_mmu_setup_translation_table (aarch64_mmu_control *control, const aarch64_mmu_config_entry *config_table, size_t config_count)
	Sets up the MMU translation table.

Variables
const aarch64_mmu_config_entry	aarch64_mmu_config_table []
	This is the AArch64 MMU configuration table.
const size_t	aarch64_mmu_config_table_size
	This is the count of entries in the AArch64 MMU configuration table.
aarch64_mmu_control	aarch64_mmu_instance
	This object is used to maintain the MMU translation tables.

Detailed Description

AArch64 MMU configuration.

Function Documentation

aarch64_mmu_set_translation_table_entries()

rtems_status_code aarch64_mmu_set_translation_table_entries	(	aarch64_mmu_control *	control,
		const aarch64_mmu_config_entry *	config
	)

Sets the MMU translation table entries associated with the memory region.

Parameters

[in,out]	control	is a reference to the MMU control state.
[in]	config	is the configuration entry with the memory region and region attributes.

Return values

RTEMS_SUCCESSFUL	The requested operation was successful.
RTEMS_INVALID_ADDRESS	The begin address of the memory region cannot be mapped by the MMU.
RTEMS_INVALID_SIZE	The end address of the memory region cannot be mapped by the MMU.
RTEMS_TOO_MANY	There was no page table entry available to perform the mapping.

aarch64_mmu_setup_translation_table()

void aarch64_mmu_setup_translation_table	(	aarch64_mmu_control *	control,
		const aarch64_mmu_config_entry *	config_table,
		size_t	config_count
	)

Sets up the MMU translation table.

The memory regions of the configuration table are mapped by the MMU. If a mapping is infeasible, then the BSP fatal error AARCH64_FATAL_MMU_CANNOT_MAP_BLOCK will be issued.

Parameters

[in,out]	control	is a reference to the MMU control state.
[in]	config_table	is the configuration table with memory regions and region attributes.
	config_count	is the count of configuration table entries.

Variable Documentation

aarch64_mmu_config_table

const aarch64_mmu_config_entry aarch64_mmu_config_table[]

extern

This is the AArch64 MMU configuration table.

The default table is provided by the BSP. Applications may provide their own.

aarch64_mmu_config_table_size

const size_t aarch64_mmu_config_table_size

extern

This is the count of entries in the AArch64 MMU configuration table.

The default table is provided by the BSP. Applications may provide their own.