| /* |
| * 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-cc2538.h" |
| #include "rom-utility.h" |
| |
| #define FLASH_CTRL_FCTL_BUSY 0x00000080 |
| |
| #define FLASH_PAGE_SIZE 2048 |
| #define FLASH_PAGE_NUM 2 |
| #define FLASH_SWAP_SIZE (FLASH_PAGE_SIZE * (FLASH_PAGE_NUM / 2)) |
| |
| /* The linker script creates this external symbol */ |
| extern uint8_t _FLASH_settings_pageA[]; |
| |
| /* Convert a settings offset to the physical address within the flash settings pages */ |
| static uint32_t flashPhysAddr(uint8_t aSwapIndex, uint32_t aOffset) |
| { |
| uint32_t address = (uint32_t)(&_FLASH_settings_pageA[0]) + aOffset; |
| |
| if (aSwapIndex) |
| { |
| address += FLASH_SWAP_SIZE; |
| } |
| |
| return address; |
| } |
| |
| void otPlatFlashInit(otInstance *aInstance) |
| { |
| OT_UNUSED_VARIABLE(aInstance); |
| } |
| |
| uint32_t otPlatFlashGetSwapSize(otInstance *aInstance) |
| { |
| OT_UNUSED_VARIABLE(aInstance); |
| |
| return FLASH_SWAP_SIZE; |
| } |
| |
| void otPlatFlashErase(otInstance *aInstance, uint8_t aSwapIndex) |
| { |
| OT_UNUSED_VARIABLE(aInstance); |
| |
| ROM_PageErase(flashPhysAddr(aSwapIndex, 0), FLASH_PAGE_SIZE); |
| while (HWREG(FLASH_CTRL_FCTL) & FLASH_CTRL_FCTL_BUSY) |
| { |
| } |
| } |
| |
| void otPlatFlashWrite(otInstance *aInstance, uint8_t aSwapIndex, uint32_t aOffset, const void *aData, uint32_t aSize) |
| { |
| OT_UNUSED_VARIABLE(aInstance); |
| |
| uint32_t *data = (uint32_t *)(aData); |
| |
| for (uint32_t size = 0; size < aSize; size += sizeof(uint32_t), aOffset += sizeof(uint32_t), data++) |
| { |
| ROM_ProgramFlash(data, flashPhysAddr(aSwapIndex, aOffset), sizeof(uint32_t)); |
| |
| while (HWREG(FLASH_CTRL_FCTL) & FLASH_CTRL_FCTL_BUSY) |
| { |
| } |
| } |
| } |
| |
| void otPlatFlashRead(otInstance *aInstance, uint8_t aSwapIndex, uint32_t aOffset, uint8_t *aData, uint32_t aSize) |
| { |
| OT_UNUSED_VARIABLE(aInstance); |
| |
| memcpy(aData, (void *)flashPhysAddr(aSwapIndex, aOffset), aSize); |
| } |