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