102 lines
3.4 KiB
C
102 lines
3.4 KiB
C
/*
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* Copyright (c) 2016, The OpenThread Authors.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <assert.h>
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#include <stdint.h>
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#include <string.h>
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#include "platform-cc2538.h"
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#include "rom-utility.h"
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#define FLASH_CTRL_FCTL_BUSY 0x00000080
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#define FLASH_PAGE_SIZE 2048
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#define FLASH_PAGE_NUM 2
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#define FLASH_SWAP_SIZE (FLASH_PAGE_SIZE * (FLASH_PAGE_NUM / 2))
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/* The linker script creates this external symbol */
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extern uint8_t _FLASH_settings_pageA[];
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/* Convert a settings offset to the physical address within the flash settings pages */
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static uint32_t flashPhysAddr(uint8_t aSwapIndex, uint32_t aOffset)
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{
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uint32_t address = (uint32_t)(&_FLASH_settings_pageA[0]) + aOffset;
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if (aSwapIndex)
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{
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address += FLASH_SWAP_SIZE;
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}
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return address;
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}
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void otPlatFlashInit(otInstance *aInstance)
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{
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OT_UNUSED_VARIABLE(aInstance);
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}
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uint32_t otPlatFlashGetSwapSize(otInstance *aInstance)
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{
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OT_UNUSED_VARIABLE(aInstance);
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return FLASH_SWAP_SIZE;
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}
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void otPlatFlashErase(otInstance *aInstance, uint8_t aSwapIndex)
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{
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OT_UNUSED_VARIABLE(aInstance);
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ROM_PageErase(flashPhysAddr(aSwapIndex, 0), FLASH_PAGE_SIZE);
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while (HWREG(FLASH_CTRL_FCTL) & FLASH_CTRL_FCTL_BUSY)
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{
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}
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}
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void otPlatFlashWrite(otInstance *aInstance, uint8_t aSwapIndex, uint32_t aOffset, const void *aData, uint32_t aSize)
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{
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OT_UNUSED_VARIABLE(aInstance);
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uint32_t *data = (uint32_t *)(aData);
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for (uint32_t size = 0; size < aSize; size += sizeof(uint32_t), aOffset += sizeof(uint32_t), data++)
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{
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ROM_ProgramFlash(data, flashPhysAddr(aSwapIndex, aOffset), sizeof(uint32_t));
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while (HWREG(FLASH_CTRL_FCTL) & FLASH_CTRL_FCTL_BUSY)
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{
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}
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}
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}
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void otPlatFlashRead(otInstance *aInstance, uint8_t aSwapIndex, uint32_t aOffset, uint8_t *aData, uint32_t aSize)
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{
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OT_UNUSED_VARIABLE(aInstance);
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memcpy(aData, (void *)flashPhysAddr(aSwapIndex, aOffset), aSize);
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}
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