tz_context.h File Reference

#include <stdint.h>

Include dependency graph for tz_context.h:

Go to the source code of this file.

Macros
#define	TZ_CONTEXT_H
#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

TZ_CONTEXT_H

#define TZ_CONTEXT_H

TZ_MODULEID_T

#define TZ_MODULEID_T

Typedef Documentation

TZ_ModuleId_t

typedef uint32_t TZ_ModuleId_t

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

TZ_MemoryId_t

typedef uint32_t TZ_MemoryId_t

TZ Memory ID identifies an allocated memory slot.

Function Documentation

TZ_InitContextSystem_S()

uint32_t TZ_InitContextSystem_S

(

void

)

Initialize secure context memory system

Returns

execution status (1: success, 0: error)

TZ_AllocModuleContext_S()

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

TZ_FreeModuleContext_S()

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)

TZ_LoadContext_S()

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)

TZ_StoreContext_S()

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)