diff options
Diffstat (limited to 'sdk-config/sdk/libraries/bootloader_dfu/dfu_single_bank.c')
| -rw-r--r-- | sdk-config/sdk/libraries/bootloader_dfu/dfu_single_bank.c | 819 |
1 files changed, 819 insertions, 0 deletions
diff --git a/sdk-config/sdk/libraries/bootloader_dfu/dfu_single_bank.c b/sdk-config/sdk/libraries/bootloader_dfu/dfu_single_bank.c new file mode 100644 index 0000000..7c8368c --- /dev/null +++ b/sdk-config/sdk/libraries/bootloader_dfu/dfu_single_bank.c @@ -0,0 +1,819 @@ +/* Copyright (c) 2013 Nordic Semiconductor. All Rights Reserved. + * + * The information contained herein is property of Nordic Semiconductor ASA. + * Terms and conditions of usage are described in detail in NORDIC + * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT. + * + * Licensees are granted free, non-transferable use of the information. NO + * WARRANTY of ANY KIND is provided. This heading must NOT be removed from + * the file. + * + */ + +#include <stdint.h> +#include <stddef.h> +#include <string.h> +#include <sdk/libraries/bootloader_dfu/dfu.h> +#include <sdk/libraries/bootloader_dfu/dfu_types.h> +#include <sdk/libraries/bootloader_dfu/dfu_bank_internal.h> +#include <sdk/device/nrf.h> +#include <sdk/device/nrf51.h> +#include <sdk/device/nrf51_bitfields.h> +#include <sdk/libraries/util/app_util.h> +#include <sdk/softdevice/s130/headers/nrf_sdm.h> +#include <sdk/libraries/util/app_error.h> +#include <sdk/softdevice/s130/headers/nrf_error.h> +#include <sdk/libraries/timer/app_timer.h> +#include <sdk/libraries/util/app_error.h> +#include <sdk/libraries/util/nordic_common.h> +#include <sdk/libraries/bootloader_dfu/bootloader.h> +#include <sdk/libraries/bootloader_dfu/bootloader_types.h> +#include <sdk/drivers_nrf/pstorage/pstorage.h> +#include <sdk/softdevice/s130/headers/nrf_mbr.h> +#include <sdk/libraries/bootloader_dfu/dfu_init.h> + +static dfu_state_t m_dfu_state; /**< Current DFU state. */ +static uint32_t m_image_size; /**< Size of the image that will be transmitted. */ + +static dfu_start_packet_t m_start_packet; /**< Start packet received for this update procedure. Contains update mode and image sizes information to be used for image transfer. */ +static uint8_t m_init_packet[64]; /**< Init packet, can hold CRC, Hash, Signed Hash and similar, for image validation, integrety check and authorization checking. */ +static uint8_t m_init_packet_length; /**< Length of init packet received. */ +static uint16_t m_image_crc; /**< Calculated CRC of the image received. */ + +static app_timer_id_t m_dfu_timer_id; /**< Application timer id. */ +static bool m_dfu_timed_out = false; /**< Boolean flag value for tracking DFU timer timeout state. */ + +static pstorage_handle_t m_storage_handle_app; /**< Pstorage handle for the application area (bank 0). Bank used when updating a SoftDevice w/wo bootloader. Handle also used when swapping received application from bank 1 to bank 0. */ +static pstorage_handle_t * mp_storage_handle_active; /**< Pointer to the pstorage handle for the active bank for receiving of data packets. */ + +static dfu_callback_t m_data_pkt_cb; /**< Callback from DFU Bank module for notification of asynchronous operation such as flash prepare. */ +static dfu_bank_func_t m_functions; /**< Structure holding operations for the selected update process. */ + + +/**@brief Function for handling callbacks from pstorage module. + * + * @details Handles pstorage results for clear and storage operation. For detailed description of + * the parameters provided with the callback, please refer to \ref pstorage_ntf_cb_t. + */ +static void pstorage_callback_handler(pstorage_handle_t * p_handle, + uint8_t op_code, + uint32_t result, + uint8_t * p_data, + uint32_t data_len) +{ + switch (op_code) + { + case PSTORAGE_STORE_OP_CODE: + if ((m_dfu_state == DFU_STATE_RX_DATA_PKT) && (m_data_pkt_cb != NULL)) + { + m_data_pkt_cb(DATA_PACKET, result, p_data); + } + break; + + case PSTORAGE_CLEAR_OP_CODE: + if (m_dfu_state == DFU_STATE_PREPARING) + { + m_functions.cleared(); + m_dfu_state = DFU_STATE_RDY; + if (m_data_pkt_cb != NULL) + { + m_data_pkt_cb(START_PACKET, result, p_data); + } + } + break; + + default: + break; + } + APP_ERROR_CHECK(result); +} + + +/**@brief Function for handling the DFU timeout. + * + * @param[in] p_context The timeout context. + */ +static void dfu_timeout_handler(void * p_context) +{ + UNUSED_PARAMETER(p_context); + dfu_update_status_t update_status; + + m_dfu_timed_out = true; + update_status.status_code = DFU_TIMEOUT; + + bootloader_dfu_update_process(update_status); +} + + +/**@brief Function for restarting the DFU Timer. + * + * @details This function will stop and restart the DFU timer. This function will be called by the + * functions handling any DFU packet received from the peer that is transferring a firmware + * image. + */ +static uint32_t dfu_timer_restart(void) +{ + if (m_dfu_timed_out) + { + // The DFU timer had already timed out. + return NRF_ERROR_INVALID_STATE; + } + + uint32_t err_code = app_timer_stop(m_dfu_timer_id); + APP_ERROR_CHECK(err_code); + + err_code = app_timer_start(m_dfu_timer_id, DFU_TIMEOUT_INTERVAL, NULL); + APP_ERROR_CHECK(err_code); + + return err_code; +} + + +/**@brief Function for preparing of flash before receiving SoftDevice image. + * + * @details This function will erase current application area to ensure sufficient amount of + * storage for the SoftDevice image. Upon erase complete a callback will be done. + * See \ref dfu_bank_prepare_t for further details. + */ +static void dfu_prepare_func_app_erase(uint32_t image_size) +{ + uint32_t err_code; + + mp_storage_handle_active = &m_storage_handle_app; + + // Doing a SoftDevice update thus current application must be cleared to ensure enough space + // for new SoftDevice. + m_dfu_state = DFU_STATE_PREPARING; + err_code = pstorage_clear(&m_storage_handle_app, m_image_size); + APP_ERROR_CHECK(err_code); +} + + +/**@brief Function for handling behaviour when clear operation has completed. + */ +static void dfu_cleared_func_app(void) +{ + dfu_update_status_t update_status = {DFU_BANK_0_ERASED, }; + bootloader_dfu_update_process(update_status); +} + + +/**@brief Function for calculating storage offset for receiving SoftDevice image. + * + * @details When a new SoftDevice is received it will be temporary stored in flash before moved to + * address 0x0. In order to succesfully validate transfer and relocation it is important + * that temporary image and final installed image does not ovwerlap hence an offset must + * be calculated in case new image is larger than currently installed SoftDevice. + */ +uint32_t offset_calculate(uint32_t sd_image_size) +{ + uint32_t offset = 0; + + if (m_start_packet.sd_image_size > DFU_BANK_0_REGION_START) + { + uint32_t page_mask = (CODE_PAGE_SIZE - 1); + uint32_t diff = m_start_packet.sd_image_size - DFU_BANK_0_REGION_START; + + offset = diff & ~page_mask; + + // Align offset to next page if image size is not page sized. + if ((diff & page_mask) > 0) + { + offset += CODE_PAGE_SIZE; + } + } + + return offset; +} + + +/**@brief Function for activating received SoftDevice image. + * + * @note This function will not move the SoftDevice image. + * The bootloader settings will be marked as SoftDevice update complete and the swapping of + * current SoftDevice will occur after system reset. + * + * @return NRF_SUCCESS on success. + */ +static uint32_t dfu_activate_sd(void) +{ + dfu_update_status_t update_status; + + update_status.status_code = DFU_UPDATE_SD_COMPLETE; + update_status.app_crc = m_image_crc; + update_status.sd_image_start = DFU_BANK_0_REGION_START; + update_status.sd_size = m_start_packet.sd_image_size; + update_status.bl_size = m_start_packet.bl_image_size; + update_status.app_size = m_start_packet.app_image_size; + + bootloader_dfu_update_process(update_status); + + return NRF_SUCCESS; +} + + +/**@brief Function for activating received Application image. + * + * @details This function will move the received application image fram swap (bank 1) to + * application area (bank 0). + * + * @return NRF_SUCCESS on success. Error code otherwise. + */ +static uint32_t dfu_activate_app(void) +{ + uint32_t err_code = NRF_SUCCESS; + dfu_update_status_t update_status; + + memset(&update_status, 0, sizeof(dfu_update_status_t )); + update_status.status_code = DFU_UPDATE_APP_COMPLETE; + update_status.app_crc = m_image_crc; + update_status.app_size = m_start_packet.app_image_size; + + bootloader_dfu_update_process(update_status); + + return err_code; +} + + +/**@brief Function for activating received Bootloader image. + * + * @note This function will not move the bootloader image. + * The bootloader settings will be marked as Bootloader update complete and the swapping of + * current bootloader will occur after system reset. + * + * @return NRF_SUCCESS on success. + */ +static uint32_t dfu_activate_bl(void) +{ + dfu_update_status_t update_status; + + update_status.status_code = DFU_UPDATE_BOOT_COMPLETE; + update_status.app_crc = m_image_crc; + update_status.sd_size = m_start_packet.sd_image_size; + update_status.bl_size = m_start_packet.bl_image_size; + update_status.app_size = m_start_packet.app_image_size; + + bootloader_dfu_update_process(update_status); + + return NRF_SUCCESS; +} + + +uint32_t dfu_init(void) +{ + uint32_t err_code; + pstorage_module_param_t storage_module_param = {.cb = pstorage_callback_handler}; + + m_init_packet_length = 0; + m_image_crc = 0; + + err_code = pstorage_register(&storage_module_param, &m_storage_handle_app); + if (err_code != NRF_SUCCESS) + { + m_dfu_state = DFU_STATE_INIT_ERROR; + return err_code; + } + + m_storage_handle_app.block_id = DFU_BANK_0_REGION_START; + + // Create the timer to monitor the activity by the peer doing the firmware update. + err_code = app_timer_create(&m_dfu_timer_id, + APP_TIMER_MODE_SINGLE_SHOT, + dfu_timeout_handler); + APP_ERROR_CHECK(err_code); + + // Start the DFU timer. + err_code = app_timer_start(m_dfu_timer_id, DFU_TIMEOUT_INTERVAL, NULL); + APP_ERROR_CHECK(err_code); + + m_data_received = 0; + m_dfu_state = DFU_STATE_IDLE; + + return NRF_SUCCESS; +} + + +void dfu_register_callback(dfu_callback_t callback_handler) +{ + m_data_pkt_cb = callback_handler; +} + + +uint32_t dfu_start_pkt_handle(dfu_update_packet_t * p_packet) +{ + uint32_t err_code; + + m_start_packet = *(p_packet->params.start_packet); + + // Check that the requested update procedure is supported. + // Currently the following combinations are allowed: + // - Application + // - SoftDevice + // - Bootloader + // - SoftDevice with Bootloader + if (IS_UPDATING_APP(m_start_packet) && + (IS_UPDATING_SD(m_start_packet) || IS_UPDATING_BL(m_start_packet))) + { + // App update is only supported independently. + return NRF_ERROR_NOT_SUPPORTED; + } + + if (!(IS_WORD_SIZED(m_start_packet.sd_image_size) && + IS_WORD_SIZED(m_start_packet.bl_image_size) && + IS_WORD_SIZED(m_start_packet.app_image_size))) + { + // Image_sizes are not a multiple of 4 (word size). + return NRF_ERROR_NOT_SUPPORTED; + } + + m_image_size = m_start_packet.sd_image_size + m_start_packet.bl_image_size + + m_start_packet.app_image_size; + + if (m_start_packet.bl_image_size > DFU_BL_IMAGE_MAX_SIZE) + { + return NRF_ERROR_DATA_SIZE; + } + + if (m_image_size > (DFU_IMAGE_MAX_SIZE_FULL)) + { + return NRF_ERROR_DATA_SIZE; + } + m_functions.prepare = dfu_prepare_func_app_erase; + m_functions.cleared = dfu_cleared_func_app; + + if (IS_UPDATING_SD(m_start_packet)) + { + m_functions.activate = dfu_activate_sd; + } + else if (IS_UPDATING_BL(m_start_packet)) + { + m_functions.activate = dfu_activate_bl; + } + else + { + m_functions.activate = dfu_activate_app; + } + + switch (m_dfu_state) + { + case DFU_STATE_IDLE: + // Valid peer activity detected. Hence restart the DFU timer. + err_code = dfu_timer_restart(); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + m_functions.prepare(m_image_size); + + break; + + default: + err_code = NRF_ERROR_INVALID_STATE; + break; + } + + return err_code; +} + + +uint32_t dfu_data_pkt_handle(dfu_update_packet_t * p_packet) +{ + uint32_t data_length; + uint32_t err_code; + uint32_t * p_data; + + if (p_packet == NULL) + { + return NRF_ERROR_NULL; + } + + // Check pointer alignment. + if (!is_word_aligned(p_packet->params.data_packet.p_data_packet)) + { + // The p_data_packet is not word aligned address. + return NRF_ERROR_INVALID_ADDR; + } + + switch (m_dfu_state) + { + case DFU_STATE_RDY: + case DFU_STATE_RX_INIT_PKT: + return NRF_ERROR_INVALID_STATE; + + case DFU_STATE_RX_DATA_PKT: + data_length = p_packet->params.data_packet.packet_length * sizeof(uint32_t); + + if ((m_data_received + data_length) > m_image_size) + { + // The caller is trying to write more bytes into the flash than the size provided to + // the dfu_image_size_set function. This is treated as a serious error condition and + // an unrecoverable one. Hence point the variable mp_app_write_address to the top of + // the flash area. This will ensure that all future application data packet writes + // will be blocked because of the above check. + m_data_received = 0xFFFFFFFF; + + return NRF_ERROR_DATA_SIZE; + } + + // Valid peer activity detected. Hence restart the DFU timer. + err_code = dfu_timer_restart(); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + p_data = (uint32_t *)p_packet->params.data_packet.p_data_packet; + + err_code = pstorage_store(mp_storage_handle_active, + (uint8_t *)p_data, + data_length, + m_data_received); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + m_data_received += data_length; + + if (m_data_received != m_image_size) + { + // The entire image is not received yet. More data is expected. + err_code = NRF_ERROR_INVALID_LENGTH; + } + else + { + // The entire image has been received. Return NRF_SUCCESS. + err_code = NRF_SUCCESS; + } + break; + + default: + err_code = NRF_ERROR_INVALID_STATE; + break; + } + + return err_code; +} + + +uint32_t dfu_init_pkt_complete(void) +{ + uint32_t err_code = NRF_ERROR_INVALID_STATE; + + // DFU initialization has been done and a start packet has been received. + if (IMAGE_WRITE_IN_PROGRESS()) + { + // Image write is already in progress. Cannot handle an init packet now. + return NRF_ERROR_INVALID_STATE; + } + + if (m_dfu_state == DFU_STATE_RX_INIT_PKT) + { + err_code = dfu_init_prevalidate(m_init_packet, m_init_packet_length); + if (err_code == NRF_SUCCESS) + { + m_dfu_state = DFU_STATE_RX_DATA_PKT; + } + else + { + m_init_packet_length = 0; + } + } + return err_code; +} + + +uint32_t dfu_init_pkt_handle(dfu_update_packet_t * p_packet) +{ + uint32_t err_code = NRF_SUCCESS; + uint32_t length; + + switch (m_dfu_state) + { + case DFU_STATE_RDY: + m_dfu_state = DFU_STATE_RX_INIT_PKT; + // When receiving init packet in state ready just update and fall through this case. + + case DFU_STATE_RX_INIT_PKT: + // DFU initialization has been done and a start packet has been received. + if (IMAGE_WRITE_IN_PROGRESS()) + { + // Image write is already in progress. Cannot handle an init packet now. + return NRF_ERROR_INVALID_STATE; + } + + // Valid peer activity detected. Hence restart the DFU timer. + err_code = dfu_timer_restart(); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + length = p_packet->params.data_packet.packet_length * sizeof(uint32_t); + if ((m_init_packet_length + length) > sizeof(m_init_packet)) + { + return NRF_ERROR_INVALID_LENGTH; + } + + memcpy(&m_init_packet[m_init_packet_length], + &p_packet->params.data_packet.p_data_packet[0], + length); + m_init_packet_length += length; + break; + + default: + // Either the start packet was not received or dfu_init function was not called before. + err_code = NRF_ERROR_INVALID_STATE; + break; + } + + return err_code; +} + + +uint32_t dfu_image_validate() +{ + uint32_t err_code; + + switch (m_dfu_state) + { + case DFU_STATE_RX_DATA_PKT: + // Check if the application image write has finished. + if (m_data_received != m_image_size) + { + // Image not yet fully transfered by the peer or the peer has attempted to write + // too much data. Hence the validation should fail. + err_code = NRF_ERROR_INVALID_STATE; + } + else + { + m_dfu_state = DFU_STATE_VALIDATE; + + // Valid peer activity detected. Hence restart the DFU timer. + err_code = dfu_timer_restart(); + if (err_code == NRF_SUCCESS) + { + err_code = dfu_init_postvalidate((uint8_t *)mp_storage_handle_active->block_id, + m_image_size); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + m_dfu_state = DFU_STATE_WAIT_4_ACTIVATE; + } + } + break; + + default: + err_code = NRF_ERROR_INVALID_STATE; + break; + } + + return err_code; +} + + +uint32_t dfu_image_activate() +{ + uint32_t err_code; + + switch (m_dfu_state) + { + case DFU_STATE_WAIT_4_ACTIVATE: + + // Stop the DFU Timer because the peer activity need not be monitored any longer. + err_code = app_timer_stop(m_dfu_timer_id); + APP_ERROR_CHECK(err_code); + + err_code = m_functions.activate(); + break; + + default: + err_code = NRF_ERROR_INVALID_STATE; + break; + } + + return err_code; +} + + +void dfu_reset(void) +{ + dfu_update_status_t update_status; + + update_status.status_code = DFU_RESET; + + bootloader_dfu_update_process(update_status); +} + + +static uint32_t dfu_compare_block(uint32_t * ptr1, uint32_t * ptr2, uint32_t len) +{ + sd_mbr_command_t sd_mbr_cmd; + + sd_mbr_cmd.command = SD_MBR_COMMAND_COMPARE; + sd_mbr_cmd.params.compare.ptr1 = ptr1; + sd_mbr_cmd.params.compare.ptr2 = ptr2; + sd_mbr_cmd.params.compare.len = len / sizeof(uint32_t); + + return sd_mbr_command(&sd_mbr_cmd); +} + + +static uint32_t dfu_copy_sd(uint32_t * src, uint32_t * dst, uint32_t len) +{ + sd_mbr_command_t sd_mbr_cmd; + + sd_mbr_cmd.command = SD_MBR_COMMAND_COPY_SD; + sd_mbr_cmd.params.copy_sd.src = src; + sd_mbr_cmd.params.copy_sd.dst = dst; + sd_mbr_cmd.params.copy_sd.len = len / sizeof(uint32_t); + + return sd_mbr_command(&sd_mbr_cmd); +} + + +static uint32_t dfu_sd_img_block_swap(uint32_t * src, + uint32_t * dst, + uint32_t len, + uint32_t block_size) +{ + // It is neccesarry to swap the new SoftDevice in 3 rounds to ensure correct copy of data + // and verifucation of data in case power reset occurs during write to flash. + // To ensure the robustness of swapping the images are compared backwards till start of + // image swap. If the back is identical everything is swapped. + uint32_t err_code = dfu_compare_block(src, dst, len); + if (err_code == NRF_SUCCESS) + { + return err_code; + } + + if ((uint32_t)dst > SOFTDEVICE_REGION_START) + { + err_code = dfu_sd_img_block_swap((uint32_t *)((uint32_t)src - block_size), + (uint32_t *)((uint32_t)dst - block_size), + block_size, + block_size); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + } + + err_code = dfu_copy_sd(src, dst, len); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + return dfu_compare_block(src, dst, len); +} + + +uint32_t dfu_sd_image_swap(void) +{ + bootloader_settings_t boot_settings; + + bootloader_settings_get(&boot_settings); + + if (boot_settings.sd_image_size == 0) + { + return NRF_SUCCESS; + } + + if ((SOFTDEVICE_REGION_START + boot_settings.sd_image_size) > boot_settings.sd_image_start) + { + uint32_t err_code; + uint32_t sd_start = SOFTDEVICE_REGION_START; + uint32_t block_size = (boot_settings.sd_image_start - sd_start) / 2; + uint32_t image_end = boot_settings.sd_image_start + boot_settings.sd_image_size; + + uint32_t img_block_start = boot_settings.sd_image_start + 2 * block_size; + uint32_t sd_block_start = sd_start + 2 * block_size; + + if (SD_SIZE_GET(MBR_SIZE) < boot_settings.sd_image_size) + { + // This will clear a page thus ensuring the old image is invalidated before swapping. + err_code = dfu_copy_sd((uint32_t *)(sd_start + block_size), + (uint32_t *)(sd_start + block_size), + sizeof(uint32_t)); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + err_code = dfu_copy_sd((uint32_t *)sd_start, (uint32_t *)sd_start, sizeof(uint32_t)); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + } + + return dfu_sd_img_block_swap((uint32_t *)img_block_start, + (uint32_t *)sd_block_start, + image_end - img_block_start, + block_size); + } + else + { + if (boot_settings.sd_image_size != 0) + { + return dfu_copy_sd((uint32_t *)boot_settings.sd_image_start, + (uint32_t *)SOFTDEVICE_REGION_START, + boot_settings.sd_image_size); + } + } + + return NRF_SUCCESS; +} + + +uint32_t dfu_bl_image_swap(void) +{ + bootloader_settings_t bootloader_settings; + sd_mbr_command_t sd_mbr_cmd; + + bootloader_settings_get(&bootloader_settings); + + if (bootloader_settings.bl_image_size != 0) + { + uint32_t bl_image_start = (bootloader_settings.sd_image_size == 0) ? + DFU_BANK_0_REGION_START : + bootloader_settings.sd_image_start + + bootloader_settings.sd_image_size; + + sd_mbr_cmd.command = SD_MBR_COMMAND_COPY_BL; + sd_mbr_cmd.params.copy_bl.bl_src = (uint32_t *)(bl_image_start); + sd_mbr_cmd.params.copy_bl.bl_len = bootloader_settings.bl_image_size / sizeof(uint32_t); + + return sd_mbr_command(&sd_mbr_cmd); + } + return NRF_SUCCESS; +} + + +uint32_t dfu_bl_image_validate(void) +{ + bootloader_settings_t bootloader_settings; + sd_mbr_command_t sd_mbr_cmd; + + bootloader_settings_get(&bootloader_settings); + + if (bootloader_settings.bl_image_size != 0) + { + uint32_t bl_image_start = (bootloader_settings.sd_image_size == 0) ? + DFU_BANK_0_REGION_START : + bootloader_settings.sd_image_start + + bootloader_settings.sd_image_size; + + sd_mbr_cmd.command = SD_MBR_COMMAND_COMPARE; + sd_mbr_cmd.params.compare.ptr1 = (uint32_t *)BOOTLOADER_REGION_START; + sd_mbr_cmd.params.compare.ptr2 = (uint32_t *)(bl_image_start); + sd_mbr_cmd.params.compare.len = bootloader_settings.bl_image_size / sizeof(uint32_t); + + return sd_mbr_command(&sd_mbr_cmd); + } + return NRF_SUCCESS; +} + + +uint32_t dfu_sd_image_validate(void) +{ + bootloader_settings_t bootloader_settings; + sd_mbr_command_t sd_mbr_cmd; + + bootloader_settings_get(&bootloader_settings); + + if (bootloader_settings.sd_image_size == 0) + { + return NRF_SUCCESS; + } + + if ((SOFTDEVICE_REGION_START + bootloader_settings.sd_image_size) > bootloader_settings.sd_image_start) + { + uint32_t sd_start = SOFTDEVICE_REGION_START; + uint32_t block_size = (bootloader_settings.sd_image_start - sd_start) / 2; + uint32_t image_end = bootloader_settings.sd_image_start + + bootloader_settings.sd_image_size; + + uint32_t img_block_start = bootloader_settings.sd_image_start + 2 * block_size; + uint32_t sd_block_start = sd_start + 2 * block_size; + + if (SD_SIZE_GET(MBR_SIZE) < bootloader_settings.sd_image_size) + { + return NRF_ERROR_NULL; + } + + return dfu_sd_img_block_swap((uint32_t *)img_block_start, + (uint32_t *)sd_block_start, + image_end - img_block_start, + block_size); + } + + sd_mbr_cmd.command = SD_MBR_COMMAND_COMPARE; + sd_mbr_cmd.params.compare.ptr1 = (uint32_t *)SOFTDEVICE_REGION_START; + sd_mbr_cmd.params.compare.ptr2 = (uint32_t *)bootloader_settings.sd_image_start; + sd_mbr_cmd.params.compare.len = bootloader_settings.sd_image_size / sizeof(uint32_t); + + return sd_mbr_command(&sd_mbr_cmd); +} |