95 lines
3.7 KiB
C
95 lines
3.7 KiB
C
/**
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* Copyright (c) 2016 - 2020, Nordic Semiconductor ASA
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <stdint.h>
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#include "nrf.h"
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#include "nrf_assert.h"
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#include "nrf_strerror.h"
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#include "nrf_mpu_lib.h"
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#include "nrf_stack_guard.h"
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#define NRF_LOG_MODULE_NAME stack_guard
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#if NRF_STACK_GUARD_CONFIG_LOG_ENABLED
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#define NRF_LOG_LEVEL NRF_STACK_GUARD_CONFIG_LOG_LEVEL
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#define NRF_LOG_INFO_COLOR NRF_STACK_GUARD_CONFIG_INFO_COLOR
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#define NRF_LOG_DEBUG_COLOR NRF_STACK_GUARD_CONFIG_DEBUG_COLOR
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#endif
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#include "nrf_log.h"
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NRF_LOG_MODULE_REGISTER();
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#if NRF_STACK_GUARD_ENABLED
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STATIC_ASSERT(STACK_GUARD_SIZE >= 32);
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ret_code_t nrf_stack_guard_init(void)
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{
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nrf_mpu_lib_region_t region;
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uint32_t attributes;
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ret_code_t status;
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ASSERT((STACK_GUARD_BASE + STACK_GUARD_SIZE) < (uint32_t)((void *)(STACK_TOP)));
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attributes = (0x05 << MPU_RASR_TEX_Pos) | (1 << MPU_RASR_B_Pos) | /* Normal memory, WBWA/WBWA */
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(0x07 << MPU_RASR_AP_Pos) | (1 << MPU_RASR_XN_Pos); /* Access: RO/RO, XN */
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status = nrf_mpu_lib_region_create(®ion,
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(void *)(STACK_GUARD_BASE),
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STACK_GUARD_SIZE,
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attributes);
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if (status == NRF_SUCCESS)
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{
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NRF_LOG_INFO("Stack Guard (%u bytes): 0x%08X-0x%08X (total stack size: %u bytes, usable stack area: %u bytes)",
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STACK_GUARD_SIZE,
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STACK_GUARD_BASE,
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STACK_GUARD_BASE + STACK_GUARD_SIZE - 1,
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STACK_SIZE,
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REAL_STACK_SIZE);
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}
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else
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{
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NRF_LOG_ERROR("Cannot create stack guard page! Error: %u [%s]", status, (uint32_t)nrf_strerror_get(status));
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}
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return status;
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}
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#endif /* NRF_STACK_GUARD_ENABLED */
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