| /* |
| * 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 <stdint.h> |
| #include <string.h> |
| #include <assert.h> |
| |
| #include <openthread/types.h> |
| #include <openthread/platform/alarm.h> |
| #include <utils/flash.h> |
| #include <utils/code_utils.h> |
| |
| #include "platform-nrf5.h" |
| |
| extern uint32_t __flash_data_start; |
| extern uint32_t __flash_data_end; |
| |
| #define FLASH_PAGE_ADDR_MASK 0xFFFFF000 |
| #define FLASH_PAGE_SIZE 4096 |
| #define FLASH_START_ADDR ((uint32_t)&__flash_data_start) |
| #define FLASH_END_ADDR ((uint32_t)&__flash_data_end) |
| |
| static inline uint32_t mapAddress(uint32_t aAddress) |
| { |
| return aAddress + FLASH_START_ADDR; |
| } |
| |
| otError utilsFlashInit(void) |
| { |
| // Just ensure that the start and end addresses are page-aligned. |
| assert((FLASH_START_ADDR % FLASH_PAGE_SIZE) == 0); |
| assert((FLASH_END_ADDR % FLASH_PAGE_SIZE) == 0); |
| |
| return OT_ERROR_NONE; |
| } |
| |
| uint32_t utilsFlashGetSize(void) |
| { |
| return FLASH_END_ADDR - FLASH_START_ADDR; |
| } |
| |
| otError utilsFlashErasePage(uint32_t aAddress) |
| { |
| otError error = OT_ERROR_NONE; |
| otEXPECT_ACTION(aAddress < utilsFlashGetSize(), error = OT_ERROR_INVALID_ARGS); |
| |
| error = nrf5FlashPageErase(mapAddress(aAddress & FLASH_PAGE_ADDR_MASK)); |
| |
| exit: |
| return error; |
| } |
| |
| otError utilsFlashStatusWait(uint32_t aTimeout) |
| { |
| otError error = OT_ERROR_BUSY; |
| |
| if (aTimeout == 0) |
| { |
| if (!nrf5FlashIsBusy()) |
| { |
| error = OT_ERROR_NONE; |
| } |
| } |
| else |
| { |
| uint32_t startTime = otPlatAlarmGetNow(); |
| |
| do |
| { |
| if (!nrf5FlashIsBusy()) |
| { |
| error = OT_ERROR_NONE; |
| break; |
| } |
| } |
| while (otPlatAlarmGetNow() - startTime < aTimeout); |
| } |
| |
| return error; |
| } |
| |
| uint32_t utilsFlashWrite(uint32_t aAddress, uint8_t *aData, uint32_t aSize) |
| { |
| uint32_t result = 0; |
| otEXPECT(aData); |
| otEXPECT(aAddress < utilsFlashGetSize()); |
| otEXPECT(aSize); |
| |
| result = nrf5FlashWrite(mapAddress(aAddress), aData, aSize); |
| |
| exit: |
| return result; |
| } |
| |
| uint32_t utilsFlashRead(uint32_t aAddress, uint8_t *aData, uint32_t aSize) |
| { |
| uint32_t result = 0; |
| otEXPECT(aData); |
| otEXPECT(aAddress < utilsFlashGetSize()); |
| |
| memcpy(aData, (uint8_t *)mapAddress(aAddress), aSize); |
| result = aSize; |
| |
| exit: |
| return result; |
| } |