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components/libraries/bootloader/nrf_bootloader_app_start.h

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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.
+ *
+ */
+/**@file
+ *
+ * @defgroup nrf_bootloader_app Application start
+ * @{
+ * @ingroup nrf_bootloader
+ */
+
+#ifndef NRF_BOOTLOADER_APP_START_H__
+#define NRF_BOOTLOADER_APP_START_H__
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "sdk_errors.h"
+
+
+/**@brief Function for using hardware to protect flash from writing and reading.
+ *
+ * @details This function applies write/erase protection to a specific area, using the BPROT or ACL
+ *          peripheral, depending on which is available.
+ *
+ * @param[in]  address       The start address of the area to protect. Must be a flash page
+ *                           boundary.
+ * @param[in]  size          The size of the area to protect, in bytes. Must be a multiple
+ *                           of flash page size.
+ *
+ * @retval  NRF_SUCCESS              Flash protection applied successfully.
+ * @retval  NRF_ERROR_NO_MEM         No more ACL instances to use for flash protection.
+ * @retval  NRF_ERROR_INVALID_PARAM  Address was out of range or size was not a multiple
+ *                                   of flash page size.
+ */
+ret_code_t nrf_bootloader_flash_protect(uint32_t address, uint32_t size);
+
+/**@brief Function for starting another application (and aborting the current one).
+ *
+ * @details This function uses the provided address to swap the stack pointer and then load
+ *          the address of the reset handler to be executed. It checks the current system mode
+ *          (thread/handler). If in thread mode, it resets into the other application.
+ *          If in handler mode, isr_abort is executed to ensure that handler mode is left correctly.
+ *          It then jumps into the reset handler of the other application.
+ *
+ * @note This function assumes the SoftDevice has not previously been initialized.
+ *
+ * @note This function will never return, but issues a reset into the provided application.
+ */
+void nrf_bootloader_app_start(void);
+
+#endif // NRF_BOOTLOADER_APP_START_H__
+
+/** @} */