| /* |
| * Copyright (c) 2017, 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. |
| */ |
| |
| /** |
| * @file |
| * This file implements the OpenThread platform abstraction for the non-volatile storage. |
| */ |
| |
| #include "asf.h" |
| |
| #include "utils/code_utils.h" |
| #include "utils/flash.h" |
| |
| #include "openthread-core-samr21-config.h" |
| |
| otError utilsFlashInit(void) |
| { |
| otError error = OT_ERROR_NONE; |
| struct nvm_config configNvm; |
| |
| nvm_get_config_defaults(&configNvm); |
| |
| configNvm.manual_page_write = false; |
| |
| enum status_code status; |
| |
| while ((status = nvm_set_config(&configNvm)) == STATUS_BUSY) |
| ; |
| |
| if (status != STATUS_OK) |
| { |
| error = OT_ERROR_FAILED; |
| } |
| |
| return error; |
| } |
| |
| uint32_t utilsFlashGetSize(void) |
| { |
| return SETTINGS_CONFIG_PAGE_NUM * SETTINGS_CONFIG_PAGE_SIZE; |
| } |
| |
| otError utilsFlashErasePage(uint32_t aAddress) |
| { |
| otError error = OT_ERROR_NONE; |
| |
| if (nvm_erase_row(aAddress) != STATUS_OK) |
| { |
| error = OT_ERROR_FAILED; |
| } |
| |
| return error; |
| } |
| |
| otError utilsFlashStatusWait(uint32_t aTimeout) |
| { |
| otError error = OT_ERROR_BUSY; |
| uint32_t start = otPlatAlarmMilliGetNow(); |
| |
| do |
| { |
| if (nvm_is_ready()) |
| { |
| error = OT_ERROR_NONE; |
| break; |
| } |
| } while (aTimeout && ((otPlatAlarmMilliGetNow() - start) < aTimeout)); |
| |
| return error; |
| } |
| |
| uint32_t utilsFlashWrite(uint32_t aAddress, uint8_t *aData, uint32_t aSize) |
| { |
| uint32_t rval = aSize; |
| |
| otEXPECT_ACTION(aData, rval = 0); |
| otEXPECT_ACTION(aAddress >= SETTINGS_CONFIG_BASE_ADDRESS, rval = 0); |
| otEXPECT_ACTION((aAddress - SETTINGS_CONFIG_BASE_ADDRESS + aSize) <= utilsFlashGetSize(), rval = 0); |
| otEXPECT_ACTION(((aAddress & 3) == 0) && ((aSize & 3) == 0), rval = 0); |
| |
| for (uint32_t i = 0; i < (aSize / sizeof(uint32_t)); i++) |
| { |
| *((volatile uint32_t *)aAddress) = *((uint32_t *)aData); |
| aData += sizeof(uint32_t); |
| aAddress += sizeof(uint32_t); |
| } |
| |
| // check if write page command is required |
| if ((aAddress) & (NVMCTRL_PAGE_SIZE - 1)) |
| { |
| enum status_code status; |
| |
| status = nvm_execute_command(NVM_COMMAND_WRITE_PAGE, aAddress & (~(NVMCTRL_PAGE_SIZE - 1)), 0); |
| |
| otEXPECT_ACTION(status == STATUS_OK, rval = 0); |
| } |
| |
| exit: |
| return rval; |
| } |
| |
| uint32_t utilsFlashRead(uint32_t aAddress, uint8_t *aData, uint32_t aSize) |
| { |
| uint32_t rval = aSize; |
| |
| otEXPECT_ACTION(aData, rval = 0); |
| otEXPECT_ACTION(aAddress >= SETTINGS_CONFIG_BASE_ADDRESS, rval = 0); |
| otEXPECT_ACTION((aAddress - SETTINGS_CONFIG_BASE_ADDRESS + aSize) <= utilsFlashGetSize(), rval = 0); |
| |
| while (aSize--) |
| { |
| *aData++ = (*(uint8_t *)(aAddress++)); |
| } |
| |
| exit: |
| return rval; |
| } |