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Soren Ptak 2023-09-05 17:24:04 -04:00 • committed by GitHub
parent d6bccb1f4c
commit 5fb9b50da8
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485 changed files with 108790 additions and 107581 deletions
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87
portable/ARMv8M/secure/context/secure_context.c
View file

@ -65,7 +65,7 @@
* @brief Maximum number of secure contexts.
*/
#ifndef secureconfigMAX_SECURE_CONTEXTS
#define secureconfigMAX_SECURE_CONTEXTS 8UL
#define secureconfigMAX_SECURE_CONTEXTS 8UL
#endif
/*-----------------------------------------------------------*/
@ -164,15 +164,15 @@ secureportNON_SECURE_CALLABLE void SecureContext_Init( void )
}
#if ( configENABLE_MPU == 1 )
{
/* Configure thread mode to use PSP and to be unprivileged. */
secureportSET_CONTROL( securecontextCONTROL_VALUE_UNPRIVILEGED );
}
{
/* Configure thread mode to use PSP and to be unprivileged. */
secureportSET_CONTROL( securecontextCONTROL_VALUE_UNPRIVILEGED );
}
#else /* configENABLE_MPU */
{
/* Configure thread mode to use PSP and to be privileged. */
secureportSET_CONTROL( securecontextCONTROL_VALUE_PRIVILEGED );
}
{
/* Configure thread mode to use PSP and to be privileged. */
secureportSET_CONTROL( securecontextCONTROL_VALUE_PRIVILEGED );
}
#endif /* configENABLE_MPU */
}
}
@ -219,16 +219,16 @@ secureportNON_SECURE_CALLABLE void SecureContext_Init( void )
if( pucStackMemory != NULL )
{
/* Since stack grows down, the starting point will be the last
* location. Note that this location is next to the last
* allocated byte for stack (excluding the space for seal values)
* because the hardware decrements the stack pointer before
* writing i.e. if stack pointer is 0x2, a push operation will
* decrement the stack pointer to 0x1 and then write at 0x1. */
* location. Note that this location is next to the last
* allocated byte for stack (excluding the space for seal values)
* because the hardware decrements the stack pointer before
* writing i.e. if stack pointer is 0x2, a push operation will
* decrement the stack pointer to 0x1 and then write at 0x1. */
xSecureContexts[ ulSecureContextIndex ].pucStackStart = pucStackMemory + ulSecureStackSize;
/* Seal the created secure process stack. */
*( uint32_t * )( pucStackMemory + ulSecureStackSize ) = securecontextSTACK_SEAL_VALUE;
*( uint32_t * )( pucStackMemory + ulSecureStackSize + 4 ) = securecontextSTACK_SEAL_VALUE;
*( uint32_t * ) ( pucStackMemory + ulSecureStackSize ) = securecontextSTACK_SEAL_VALUE;
*( uint32_t * ) ( pucStackMemory + ulSecureStackSize + 4 ) = securecontextSTACK_SEAL_VALUE;
/* The stack cannot go beyond this location. This value is
* programmed in the PSPLIM register on context switch.*/
@ -237,32 +237,32 @@ secureportNON_SECURE_CALLABLE void SecureContext_Init( void )
xSecureContexts[ ulSecureContextIndex ].pvTaskHandle = pvTaskHandle;
#if ( configENABLE_MPU == 1 )
{
/* Store the correct CONTROL value for the task on the stack.
* This value is programmed in the CONTROL register on
* context switch. */
pulCurrentStackPointer = ( uint32_t * ) xSecureContexts[ ulSecureContextIndex ].pucStackStart;
pulCurrentStackPointer--;
if( ulIsTaskPrivileged )
{
/* Store the correct CONTROL value for the task on the stack.
* This value is programmed in the CONTROL register on
* context switch. */
pulCurrentStackPointer = ( uint32_t * ) xSecureContexts[ ulSecureContextIndex ].pucStackStart;
pulCurrentStackPointer--;
if( ulIsTaskPrivileged )
{
*( pulCurrentStackPointer ) = securecontextCONTROL_VALUE_PRIVILEGED;
}
else
{
*( pulCurrentStackPointer ) = securecontextCONTROL_VALUE_UNPRIVILEGED;
}
/* Store the current stack pointer. This value is programmed in
* the PSP register on context switch. */
xSecureContexts[ ulSecureContextIndex ].pucCurrentStackPointer = ( uint8_t * ) pulCurrentStackPointer;
*( pulCurrentStackPointer ) = securecontextCONTROL_VALUE_PRIVILEGED;
}
else
{
*( pulCurrentStackPointer ) = securecontextCONTROL_VALUE_UNPRIVILEGED;
}
/* Store the current stack pointer. This value is programmed in
* the PSP register on context switch. */
xSecureContexts[ ulSecureContextIndex ].pucCurrentStackPointer = ( uint8_t * ) pulCurrentStackPointer;
}
#else /* configENABLE_MPU */
{
/* Current SP is set to the starting of the stack. This
* value programmed in the PSP register on context switch. */
xSecureContexts[ ulSecureContextIndex ].pucCurrentStackPointer = xSecureContexts[ ulSecureContextIndex ].pucStackStart;
}
{
/* Current SP is set to the starting of the stack. This
* value programmed in the PSP register on context switch. */
xSecureContexts[ ulSecureContextIndex ].pucCurrentStackPointer = xSecureContexts[ ulSecureContextIndex ].pucStackStart;
}
#endif /* configENABLE_MPU */
/* Ensure to never return 0 as a valid context handle. */
@ -275,7 +275,8 @@ secureportNON_SECURE_CALLABLE void SecureContext_Init( void )
}
/*-----------------------------------------------------------*/
secureportNON_SECURE_CALLABLE void SecureContext_FreeContext( SecureContextHandle_t xSecureContextHandle, void * pvTaskHandle )
secureportNON_SECURE_CALLABLE void SecureContext_FreeContext( SecureContextHandle_t xSecureContextHandle,
void * pvTaskHandle )
{
uint32_t ulIPSR, ulSecureContextIndex;
@ -306,7 +307,8 @@ secureportNON_SECURE_CALLABLE void SecureContext_FreeContext( SecureContextHandl
}
/*-----------------------------------------------------------*/
secureportNON_SECURE_CALLABLE void SecureContext_LoadContext( SecureContextHandle_t xSecureContextHandle, void * pvTaskHandle )
secureportNON_SECURE_CALLABLE void SecureContext_LoadContext( SecureContextHandle_t xSecureContextHandle,
void * pvTaskHandle )
{
uint8_t * pucStackLimit;
uint32_t ulSecureContextIndex;
@ -328,7 +330,8 @@ secureportNON_SECURE_CALLABLE void SecureContext_LoadContext( SecureContextHandl
}
/*-----------------------------------------------------------*/
secureportNON_SECURE_CALLABLE void SecureContext_SaveContext( SecureContextHandle_t xSecureContextHandle, void * pvTaskHandle )
secureportNON_SECURE_CALLABLE void SecureContext_SaveContext( SecureContextHandle_t xSecureContextHandle,
void * pvTaskHandle )
{
uint8_t * pucStackLimit;
uint32_t ulSecureContextIndex;

13
portable/ARMv8M/secure/context/secure_context.h
View file

@ -38,12 +38,12 @@
/**
* @brief PSP value when no secure context is loaded.
*/
#define securecontextNO_STACK 0x0
#define securecontextNO_STACK 0x0
/**
* @brief Invalid context ID.
*/
#define securecontextINVALID_CONTEXT_ID 0UL
#define securecontextINVALID_CONTEXT_ID 0UL
/*-----------------------------------------------------------*/
/**
@ -108,7 +108,8 @@ void SecureContext_Init( void );
* @param[in] xSecureContextHandle Context handle corresponding to the
* context to be freed.
*/
void SecureContext_FreeContext( SecureContextHandle_t xSecureContextHandle, void * pvTaskHandle );
void SecureContext_FreeContext( SecureContextHandle_t xSecureContextHandle,
void * pvTaskHandle );
/**
* @brief Loads the given context.
@ -119,7 +120,8 @@ void SecureContext_FreeContext( SecureContextHandle_t xSecureContextHandle, void
* @param[in] xSecureContextHandle Context handle corresponding to the context
* to be loaded.
*/
void SecureContext_LoadContext( SecureContextHandle_t xSecureContextHandle, void * pvTaskHandle );
void SecureContext_LoadContext( SecureContextHandle_t xSecureContextHandle,
void * pvTaskHandle );
/**
* @brief Saves the given context.
@ -130,6 +132,7 @@ void SecureContext_LoadContext( SecureContextHandle_t xSecureContextHandle, void
* @param[in] xSecureContextHandle Context handle corresponding to the context
* to be saved.
*/
void SecureContext_SaveContext( SecureContextHandle_t xSecureContextHandle, void * pvTaskHandle );
void SecureContext_SaveContext( SecureContextHandle_t xSecureContextHandle,
void * pvTaskHandle );
#endif /* __SECURE_CONTEXT_H__ */