tz_context.h File Reference

#include <stdint.h>

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Macros
#define	TZ_MODULEID_T

Typedefs
typedef uint32_t	TZ_ModuleId_t
typedef uint32_t	TZ_MemoryId_t

Functions
uint32_t	TZ_InitContextSystem_S (void)
TZ_MemoryId_t	TZ_AllocModuleContext_S (TZ_ModuleId_t module)
uint32_t	TZ_FreeModuleContext_S (TZ_MemoryId_t id)
uint32_t	TZ_LoadContext_S (TZ_MemoryId_t id)
uint32_t	TZ_StoreContext_S (TZ_MemoryId_t id)

Macro Definition Documentation

#define TZ_MODULEID_T

Definition at line 36 of file tz_context.h.

Typedef Documentation

typedef uint32_t TZ_MemoryId_t

TZ Memory ID identifies an allocated memory slot.

Definition at line 42 of file tz_context.h.

typedef uint32_t TZ_ModuleId_t

Data type that identifies secure software modules called by a process.

Definition at line 38 of file tz_context.h.

Function Documentation

TZ_MemoryId_t TZ_AllocModuleContext_S

(

TZ_ModuleId_t

module

)

Allocate context memory for calling secure software modules in TrustZone

Parameters

[in]

module

identifies software modules called from non-secure mode

Returns

value != 0 id TrustZone memory slot identifier

value 0 no memory available or internal error

Definition at line 117 of file tfm_nspm_func.c.

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uint32_t TZ_FreeModuleContext_S

(

TZ_MemoryId_t

id

)

Free context memory that was previously allocated with TZ_AllocModuleContext_S

Parameters

[in]

id

TrustZone memory slot identifier

Returns

execution status (1: success, 0: error)

Definition at line 149 of file tfm_nspm_func.c.

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uint32_t TZ_InitContextSystem_S

(

void

)

Initialize secure context memory system

Returns

execution status (1: success, 0: error)

Definition at line 85 of file tfm_nspm_func.c.

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uint32_t TZ_LoadContext_S

(

TZ_MemoryId_t

id

)

Load secure context (called on RTOS thread context switch)

Parameters

[in]

id

TrustZone memory slot identifier

Returns

execution status (1: success, 0: error)

Definition at line 194 of file tfm_nspm_func.c.

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uint32_t TZ_StoreContext_S

(

TZ_MemoryId_t

id

)

Store secure context (called on RTOS thread context switch)

Parameters

[in]

id

TrustZone memory slot identifier

Returns

execution status (1: success, 0: error)

Definition at line 233 of file tfm_nspm_func.c.

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