#include <zephyr/sys/util.h>
#include <zephyr/toolchain.h>
#include <zephyr/kernel/internal/mm.h>
#include <stdint.h>
#include <stddef.h>
#include <inttypes.h>

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Macros
Caching mode definitions.
These are mutually exclusive.
#define	K_MEM_CACHE_NONE 2
	No caching.

#define	K_MEM_CACHE_WT 1
	Write-through caching.

#define	K_MEM_CACHE_WB 0
	Full write-back caching.

#define	K_MEM_CACHE_MASK (BIT(3) - 1)
	Reserved bits for cache modes in k_map() flags argument.

Region permission attributes.
Default is read-only, no user, no exec
#define	K_MEM_PERM_RW BIT(3)
	Region will have read/write access (and not read-only)

#define	K_MEM_PERM_EXEC BIT(4)
	Region will be executable (normally forbidden)

#define	K_MEM_PERM_USER BIT(5)
	Region will be accessible to user mode (normally supervisor-only)

Region mapping behaviour attributes
#define	K_MEM_DIRECT_MAP BIT(6)
	Region will be mapped to 1:1 virtual and physical address.

k_mem_map() control flags
#define	K_MEM_MAP_UNINIT BIT(16)
	The mapped region is not guaranteed to be zeroed.

#define	K_MEM_MAP_LOCK BIT(17)
	Region will be pinned in memory and never paged.

#define	K_MEM_MAP_UNPAGED BIT(18)
	Region will be unpaged i.e.

Functions
size_t	k_mem_free_get (void)
	Return the amount of free memory available.

static void *	k_mem_map (size_t size, uint32_t flags)
	Map anonymous memory into Zephyr's address space.

static void	k_mem_unmap (void *addr, size_t size)
	Un-map mapped memory.

int	k_mem_update_flags (void *addr, size_t size, uint32_t flags)
	Modify memory mapping attribute flags.

size_t	k_mem_region_align (uintptr_t aligned_addr, size_t aligned_size, uintptr_t addr, size_t size, size_t align)
	Given an arbitrary region, provide a aligned region that covers it.

Macros

Functions