| /* |
| * Copyright (c) 2016, The OpenThread Authors. |
| * 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 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 the copyright holder nor the |
| * names of its contributors may be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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 <assert.h> |
| #include <stdint.h> |
| #include <string.h> |
| |
| #include "platform-nrf5.h" |
| |
| /** |
| * @def PLATFORM_FLASH_PAGE_NUM |
| * |
| * Number of flash pages to use for OpenThread's non-volatile settings. |
| * |
| * @note This define applies only for MDK-ARM Keil toolchain configuration. |
| * |
| */ |
| #ifndef PLATFORM_FLASH_PAGE_NUM |
| #define PLATFORM_FLASH_PAGE_NUM 4 |
| #endif |
| |
| #define FLASH_PAGE_ADDR_MASK 0xFFFFF000 |
| #define FLASH_PAGE_SIZE 4096 |
| |
| static uint32_t sFlashDataStart; |
| static uint32_t sFlashDataEnd; |
| static uint32_t sSwapSize; |
| |
| static inline uint32_t mapAddress(uint8_t aSwapIndex, uint32_t aOffset) |
| { |
| uint32_t address; |
| |
| address = sFlashDataStart + aOffset; |
| |
| if (aSwapIndex) |
| { |
| address += sSwapSize; |
| } |
| |
| return address; |
| } |
| |
| void otPlatFlashInit(otInstance *aInstance) |
| { |
| OT_UNUSED_VARIABLE(aInstance); |
| |
| #if defined(__CC_ARM) |
| // Temporary solution for Keil compiler. |
| uint32_t const bootloaderAddr = NRF_UICR->NRFFW[0]; |
| uint32_t const pageSize = NRF_FICR->CODEPAGESIZE; |
| uint32_t const codeSize = NRF_FICR->CODESIZE; |
| |
| if (bootloaderAddr != 0xFFFFFFFF) |
| { |
| sFlashDataEnd = bootloaderAddr; |
| } |
| else |
| { |
| sFlashDataEnd = pageSize * codeSize; |
| } |
| |
| sFlashDataStart = sFlashDataEnd - (pageSize * PLATFORM_FLASH_PAGE_NUM); |
| |
| #elif defined(__GNUC__) || defined(__ICCARM__) |
| extern uint32_t __start_ot_flash_data; |
| extern uint32_t __stop_ot_flash_data; |
| |
| sFlashDataStart = (uint32_t)&__start_ot_flash_data; |
| sFlashDataEnd = (uint32_t)&__stop_ot_flash_data; |
| |
| #endif |
| |
| // Just ensure that the start and end addresses are page-aligned. |
| assert((sFlashDataStart % FLASH_PAGE_SIZE) == 0); |
| assert((sFlashDataEnd % FLASH_PAGE_SIZE) == 0); |
| |
| sSwapSize = ((sFlashDataEnd - sFlashDataStart) / FLASH_PAGE_SIZE / 2) * FLASH_PAGE_SIZE; |
| assert(sSwapSize > 0); |
| } |
| |
| uint32_t otPlatFlashGetSwapSize(otInstance *aInstance) |
| { |
| OT_UNUSED_VARIABLE(aInstance); |
| |
| return sSwapSize; |
| } |
| |
| void otPlatFlashErase(otInstance *aInstance, uint8_t aSwapIndex) |
| { |
| OT_UNUSED_VARIABLE(aInstance); |
| |
| otError error; |
| |
| for (uint32_t offset = 0; offset < sSwapSize; offset += FLASH_PAGE_SIZE) |
| { |
| error = nrf5FlashPageErase(mapAddress(aSwapIndex, offset)); |
| assert(error == OT_ERROR_NONE); |
| |
| while (nrf5FlashIsBusy()) |
| { |
| } |
| } |
| |
| OT_UNUSED_VARIABLE(error); |
| } |
| |
| void otPlatFlashWrite(otInstance *aInstance, uint8_t aSwapIndex, uint32_t aOffset, const void *aData, uint32_t aSize) |
| { |
| OT_UNUSED_VARIABLE(aInstance); |
| |
| otError error; |
| |
| error = nrf5FlashWrite(mapAddress(aSwapIndex, aOffset), aData, aSize); |
| assert(error == OT_ERROR_NONE); |
| |
| OT_UNUSED_VARIABLE(error); |
| } |
| |
| void otPlatFlashRead(otInstance *aInstance, uint8_t aSwapIndex, uint32_t aOffset, void *aData, uint32_t aSize) |
| { |
| OT_UNUSED_VARIABLE(aInstance); |
| |
| memcpy(aData, (uint8_t *)mapAddress(aSwapIndex, aOffset), aSize); |
| } |