Application memory domain APIs

Application memory domain APIs . More...

Macros
#define	K_APP_DMEM_SECTION(id)
	Name of the data section for a particular partition.
#define	K_APP_BMEM_SECTION(id)
	Name of the bss section for a particular partition.
#define	K_APP_DMEM(id)
	Place data in a partition's data section.
#define	K_APP_BMEM(id)
	Place data in a partition's bss section.
#define	K_APPMEM_PARTITION_DEFINE(name)
	Define an application memory partition with linker support.

Detailed Description

Application memory domain APIs .

Macro Definition Documentation

K_APP_BMEM

#define K_APP_BMEM

(

id

)

#include <zephyr/app_memory/app_memdomain.h>

Value:

Z_GENERIC_SECTION(K_APP_BMEM_SECTION(id))

Place data in a partition's bss section.

Globals tagged with this will end up in the bss section for the specified memory partition. This data will be zeroed at boot.

Parameters

id	Name of the memory partition to associate this data

K_APP_BMEM_SECTION

#define K_APP_BMEM_SECTION

(

id

)

#include <zephyr/app_memory/app_memdomain.h>

Value:

data_smem_##id##_bss

Name of the bss section for a particular partition.

Useful for defining memory pools, or any other macro that takes a section name as a parameter.

Parameters

id	Partition name

K_APP_DMEM

#define K_APP_DMEM

(

id

)

#include <zephyr/app_memory/app_memdomain.h>

Value:

Z_GENERIC_SECTION(K_APP_DMEM_SECTION(id))

Place data in a partition's data section.

Globals tagged with this will end up in the data section for the specified memory partition. This data should be initialized to some desired value.

Parameters

id	Name of the memory partition to associate this data

K_APP_DMEM_SECTION

#define K_APP_DMEM_SECTION

(

id

)

#include <zephyr/app_memory/app_memdomain.h>

Value:

data_smem_##id##_data

Name of the data section for a particular partition.

Useful for defining memory pools, or any other macro that takes a section name as a parameter.

Parameters

id	Partition name

K_APPMEM_PARTITION_DEFINE

#define K_APPMEM_PARTITION_DEFINE

(

name

)

#include <zephyr/app_memory/app_memdomain.h>

Value:

        extern char Z_APP_START(name)[]; \
        extern char Z_APP_SIZE(name)[]; \
        struct k_mem_partition name = { \
                .start = (uintptr_t) &Z_APP_START(name)[0], \
                .size = (size_t) &Z_APP_SIZE(name)[0], \
                .attr = K_MEM_PARTITION_P_RW_U_RW \
        }; \
        extern char Z_APP_BSS_START(name)[]; \
        extern char Z_APP_BSS_SIZE(name)[]; \
        Z_GENERIC_SECTION(.app_regions.name) \
        const struct z_app_region name##_region = { \
                .bss_start = &Z_APP_BSS_START(name)[0], \
                .bss_size = (size_t) &Z_APP_BSS_SIZE(name)[0] \
        }; \
        Z_APPMEM_PLACEHOLDER(name)

Define an application memory partition with linker support.

Defines a k_mem_paritition with the provided name. This name may be used with the K_APP_DMEM and K_APP_BMEM macros to place globals automatically in this partition.

NOTE: placeholder char variable is defined here to prevent build errors if a partition is defined but nothing ever placed in it.

Parameters

name	Name of the k_mem_partition to declare