86 lines
3.3 KiB
C
86 lines
3.3 KiB
C
/***************************************************************************//**
|
|
* @file
|
|
* @brief MPU API definition.
|
|
*******************************************************************************
|
|
* # License
|
|
* <b>Copyright 2019 Silicon Laboratories Inc. www.silabs.com</b>
|
|
*******************************************************************************
|
|
*
|
|
* SPDX-License-Identifier: Zlib
|
|
*
|
|
* The licensor of this software is Silicon Laboratories Inc.
|
|
*
|
|
* This software is provided 'as-is', without any express or implied
|
|
* warranty. In no event will the authors be held liable for any damages
|
|
* arising from the use of this software.
|
|
*
|
|
* Permission is granted to anyone to use this software for any purpose,
|
|
* including commercial applications, and to alter it and redistribute it
|
|
* freely, subject to the following restrictions:
|
|
*
|
|
* 1. The origin of this software must not be misrepresented; you must not
|
|
* claim that you wrote the original software. If you use this software
|
|
* in a product, an acknowledgment in the product documentation would be
|
|
* appreciated but is not required.
|
|
* 2. Altered source versions must be plainly marked as such, and must not be
|
|
* misrepresented as being the original software.
|
|
* 3. This notice may not be removed or altered from any source distribution.
|
|
*
|
|
******************************************************************************/
|
|
|
|
/***************************************************************************//**
|
|
* @addtogroup mpu RAM execution disable
|
|
* @brief RAM execution disable utilities can be used to disable execution from
|
|
* RAM and other selected memory regions.
|
|
* @details
|
|
* RAM execution disable utilities are useful to protect against code
|
|
* injection attacks.
|
|
* These utilities make use of MPU to disable execution from RAM and other
|
|
* selected memory regions.
|
|
*
|
|
* @{
|
|
******************************************************************************/
|
|
|
|
#ifndef SL_MPU_H
|
|
#define SL_MPU_H
|
|
|
|
#include "sl_status.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/***************************************************************************//**
|
|
* Configures internal SRAM as non-executable and enable MPU.
|
|
*
|
|
* @note This function configures the MPU in order to make the entire RAM as
|
|
* non-executable (with the exception of the functions marked as ramfunc).
|
|
******************************************************************************/
|
|
void sl_mpu_disable_execute_from_ram(void);
|
|
|
|
/***************************************************************************//**
|
|
* Configures an address range as non-executable and enable MPU.
|
|
*
|
|
* @note Configures a MPU region in order to make an address range as
|
|
* non-executable. The memory region must have a size of at least 32 bytes.
|
|
*
|
|
* @param address_begin Beginning of memory segment.
|
|
*
|
|
* @param address_end End of memory segment.
|
|
*
|
|
* @param size Size of memory segment.
|
|
*
|
|
* @return 0 if successful. Error code otherwise.
|
|
******************************************************************************/
|
|
sl_status_t sl_mpu_disable_execute(uint32_t address_begin,
|
|
uint32_t address_end,
|
|
uint32_t size);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* SL_MPU_H */
|
|
|
|
/** @} (end addtogroup mpu) */
|