114 lines
3.2 KiB
C
114 lines
3.2 KiB
C
/*
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* Copyright (c) 2006-2018, Synwit Technology Co.,Ltd.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2018-05-31 ZYH first version
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* 2018-12-10 Zohar_Lee format file
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* 2020-07-10 lik rewrite
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*/
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#include "drv_nor_flash.h"
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#ifdef BSP_USING_NOR_FLASH
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#define DRV_DEBUG
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#define LOG_TAG "drv.norflash"
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#include <drv_log.h>
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static struct rt_mutex flash_lock;
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/* RT-Thread MTD device interface */
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static long swm_norflash_read_id(struct rt_mtd_nor_device *device)
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{
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return 0xdeadbeef;
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}
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static rt_size_t swm_norflash_read(struct rt_mtd_nor_device *device,
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rt_off_t position,
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rt_uint8_t *data,
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rt_uint32_t size)
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{
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rt_mutex_take(&flash_lock, RT_WAITING_FOREVER);
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memcpy(data, ((const void *)(NORFLM_BASE + position)), size);
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rt_mutex_release(&flash_lock);
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return size;
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}
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static rt_size_t swm_norflash_write(struct rt_mtd_nor_device *device,
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rt_off_t position,
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const rt_uint8_t *data,
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rt_uint32_t size)
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{
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rt_size_t i;
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const rt_uint16_t *hwdata = (const rt_uint16_t *)data;
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rt_mutex_take(&flash_lock, RT_WAITING_FOREVER);
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for (i = 0; i < size / 2; i++)
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{
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NORFL_Write(position, hwdata[i]);
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position += 2;
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}
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rt_mutex_release(&flash_lock);
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return size;
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}
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static rt_err_t swm_norflash_erase_block(struct rt_mtd_nor_device *device,
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rt_off_t offset,
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rt_uint32_t length)
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{
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rt_mutex_take(&flash_lock, RT_WAITING_FOREVER);
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NORFL_SectorErase(offset);
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rt_mutex_release(&flash_lock);
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return RT_EOK;
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}
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const static struct rt_mtd_nor_driver_ops mtd_ops =
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{
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swm_norflash_read_id,
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swm_norflash_read,
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swm_norflash_write,
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swm_norflash_erase_block};
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static struct rt_mtd_nor_device mtd;
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int rt_hw_norflash_init(void)
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{
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NORFL_InitStructure NORFL_InitStruct;
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PORT->PORTP_SEL0 = 0xAAAAAAAA; //PP0-23 => ADDR0-23
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PORT->PORTP_SEL1 = 0xAAAA;
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PORT->PORTM_SEL0 = 0xAAAAAAAA; //PM0-15 => DATA15-0
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PORT->PORTM_INEN = 0xFFFF;
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PORT->PORTM_SEL1 = 0xAAA; //PM16 => OEN、PM17 => WEN、PM18 => NORFL_CSN、PM19 => SDRAM_CSN、PM20 => SRAM_CSN、PM21 => SDRAM_CKE
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NORFL_InitStruct.DataWidth = 16;
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NORFL_InitStruct.WELowPulseTime = 5;
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NORFL_InitStruct.OEPreValidTime = 12;
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NORFL_InitStruct.OperFinishIEn = 0;
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NORFL_InitStruct.OperTimeoutIEn = 0;
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NORFL_Init(&NORFL_InitStruct);
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/* set page size and block size */
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mtd.block_size = BLOCK_SIZE; /* 64kByte */
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mtd.ops = &mtd_ops;
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/* initialize mutex */
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if (rt_mutex_init(&flash_lock, "nor", RT_IPC_FLAG_PRIO) != RT_EOK)
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{
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rt_kprintf("init sd lock mutex failed\n");
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return -RT_ERROR;
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}
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mtd.block_start = 0;
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mtd.block_end = BLOCK_COUNTER;
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/* register MTD device */
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rt_mtd_nor_register_device("nor", &mtd);
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return RT_EOK;
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}
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INIT_DEVICE_EXPORT(rt_hw_norflash_init);
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#endif /* BSP_USING_NOR_FLASH */
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