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- #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) |
- (0x07 << MPU_RASR_AP_Pos) | (1 << MPU_RASR_XN_Pos);
- 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
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