448 lines
15 KiB
C
448 lines
15 KiB
C
/*
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* File : spi_flash_at45dbxx.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2011, RT-Thread Development Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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* 2011-12-16 aozima the first version
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*/
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#include <stdint.h>
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#include "spi_flash_at45dbxx.h"
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#define FLASH_DEBUG
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#define DMA_BUFFER_SIZE 512
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#ifdef FLASH_DEBUG
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#define FLASH_TRACE rt_kprintf
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#else
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#define FLASH_TRACE(...)
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#endif /**< #ifdef FLASH_DEBUG */
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/* JEDEC Manufacturer¡¯s ID */
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#define MF_ID (0x1F) /* atmel */
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#define DENSITY_CODE_011D (0x02) /* AT45DB011D Density Code : 00010 = 1-Mbit */
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#define DENSITY_CODE_021D (0x03) /* AT45DB021D Density Code : 00011 = 2-Mbit */
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#define DENSITY_CODE_041D (0x04) /* AT45DB041D Density Code : 00100 = 4-Mbit */
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#define DENSITY_CODE_081D (0x05) /* AT45DB081D Density Code : 00101 = 8-Mbit */
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#define DENSITY_CODE_161D (0x06) /* AT45DB161D Density Code : 00110 = 16-Mbit */
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#define DENSITY_CODE_321D (0x07) /* AT45DB321D Density Code : 00111 = 32-Mbit */
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#define DENSITY_CODE_642D (0x08) /* AT45DB642D Density Code : 01000 = 64-Mbit */
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struct JEDEC_ID
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{
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uint8_t manufacturer_id; /* Manufacturer ID */
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uint8_t density_code:5; /* Density Code */
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uint8_t family_code:3; /* Family Code */
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uint8_t version_code:5; /* Product Version Code */
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uint8_t mlc_code:3; /* MLC Code */
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uint8_t byte_count; /* Byte Count */
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};
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#define AT45DB_BUFFER_1_WRITE 0x84
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#define AT45DB_BUFFER_2_WRITE 0x87
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#define AT45DB_BUFFER_1_READ 0xD4
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#define AT45DB_BUFFER_2_READ 0xD6
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#define AT45DB_B1_TO_MM_PAGE_PROG_WITH_ERASE 0x83
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#define AT45DB_B2_TO_MM_PAGE_PROG_WITH_ERASE 0x86
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#define AT45DB_MM_PAGE_TO_B1_XFER 0x53
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#define AT45DB_MM_PAGE_TO_B2_XFER 0x55
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#define AT45DB_PAGE_ERASE 0x81
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#define AT45DB_SECTOR_ERASE 0x7C
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#define AT45DB_READ_STATE_REGISTER 0xD7
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#define AT45DB_MM_PAGE_READ 0xD2
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#define AT45DB_MM_PAGE_PROG_THRU_BUFFER1 0x82
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#define AT45DB_CMD_JEDEC_ID 0x9F
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static struct spi_flash_at45dbxx spi_flash_at45dbxx;
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/*****************************************************************************/
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/*Status Register Format: */
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/* ------------------------------------------------------------------------- */
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/* | bit7 | bit6 | bit5 | bit4 | bit3 | bit2 | bit1 | bit0 | */
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/* |--------|--------|--------|--------|--------|--------|--------|--------| */
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/* |RDY/BUSY| COMP | device density | X | X | */
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/* ------------------------------------------------------------------------- */
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/* 0:busy | | AT45DB041:0111 | protect|page size */
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/* 1:ready | | AT45DB161:1011 | */
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/* --------------------------------------------------------------------------*/
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/*****************************************************************************/
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static uint8_t AT45DB_StatusRegisterRead(void)
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{
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return rt_spi_sendrecv8(spi_flash_at45dbxx.rt_spi_device, AT45DB_READ_STATE_REGISTER);
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}
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static void wait_busy(void)
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{
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uint16_t i = 0;
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while (i++ < 10000)
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{
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if (AT45DB_StatusRegisterRead() & 0x80)
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{
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return;
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}
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}
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FLASH_TRACE("\r\nSPI_FLASH timeout!!!\r\n");
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}
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/* RT-Thread Device Driver Interface */
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static rt_err_t AT45DB_flash_init(rt_device_t dev)
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{
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return RT_EOK;
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}
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static rt_err_t AT45DB_flash_open(rt_device_t dev, rt_uint16_t oflag)
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{
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return RT_EOK;
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}
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static rt_err_t AT45DB_flash_close(rt_device_t dev)
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{
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return RT_EOK;
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}
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static rt_err_t AT45DB_flash_control(rt_device_t dev, int cmd, void *args)
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{
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RT_ASSERT(dev != RT_NULL);
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if (cmd == RT_DEVICE_CTRL_BLK_GETGEOME)
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{
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struct rt_device_blk_geometry *geometry;
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geometry = (struct rt_device_blk_geometry *)args;
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if (geometry == RT_NULL) return -RT_ERROR;
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geometry->bytes_per_sector = 512;
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geometry->sector_count = 4096;
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geometry->block_size = 4096; /* block erase: 4k */
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}
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return RT_EOK;
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}
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static rt_size_t AT45DB_flash_read_page_256(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
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{
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uint32_t index, nr;
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uint8_t * read_buffer = buffer;
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uint32_t page = pos;
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nr = size;
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for (index = 0; index < nr; index++)
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{
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uint8_t send_buffer[8];
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uint32_t i;
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for(i=0; i<sizeof(send_buffer); i++)
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{
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send_buffer[i] = 0;
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}
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send_buffer[0] = AT45DB_MM_PAGE_READ;
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send_buffer[1] = (uint8_t)(page >> 7);
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send_buffer[2] = (uint8_t)(page << 1);
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rt_spi_send_then_recv(spi_flash_at45dbxx.rt_spi_device, send_buffer, 8, read_buffer, 256);
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read_buffer += 256;
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page++;
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}
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return size;
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}
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static rt_size_t AT45DB_flash_read_page_512(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
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{
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uint32_t index, nr;
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uint8_t * read_buffer = buffer;
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uint32_t page = pos;
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nr = size;
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for (index = 0; index < nr; index++)
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{
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uint8_t send_buffer[8];
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uint32_t i;
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for(i=0; i<sizeof(send_buffer); i++)
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{
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send_buffer[i] = 0;
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}
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send_buffer[0] = AT45DB_MM_PAGE_READ;
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send_buffer[1] = (uint8_t)(page >> 6);
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send_buffer[2] = (uint8_t)(page << 2);
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rt_spi_send_then_recv(spi_flash_at45dbxx.rt_spi_device, send_buffer, 8, read_buffer, 512);
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read_buffer += 512;
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page++;
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}
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return size;
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}
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static rt_size_t AT45DB_flash_read_page_1024(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
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{
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uint32_t index, nr;
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uint8_t * read_buffer = buffer;
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uint32_t page = pos;
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nr = size;
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for (index = 0; index < nr; index++)
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{
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uint8_t send_buffer[8];
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uint32_t i;
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for(i=0; i<sizeof(send_buffer); i++)
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{
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send_buffer[i] = 0;
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}
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send_buffer[0] = AT45DB_MM_PAGE_READ;
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send_buffer[1] = (uint8_t)(page >> 5);
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send_buffer[2] = (uint8_t)(page << 3);
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rt_spi_send_then_recv(spi_flash_at45dbxx.rt_spi_device, send_buffer, 8, read_buffer, 1024);
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read_buffer += 1024;
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page++;
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}
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return size;
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}
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static rt_size_t AT45DB_flash_write_page_256(rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
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{
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rt_uint32_t index, nr;
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const uint8_t * write_buffer = buffer;
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uint32_t page = pos;
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nr = size;
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for (index = 0; index < nr; index++)
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{
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uint8_t send_buffer[4];
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send_buffer[0] = AT45DB_MM_PAGE_PROG_THRU_BUFFER1;
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send_buffer[1] = (uint8_t) (page >> 7);
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send_buffer[2] = (uint8_t) (page << 1);
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send_buffer[3] = 0;
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rt_spi_send_then_send(spi_flash_at45dbxx.rt_spi_device, send_buffer, 4, write_buffer, 256);
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write_buffer += 256;
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page++;
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wait_busy();
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}
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return size;
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}
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static rt_size_t AT45DB_flash_write_page_512(rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
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{
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rt_uint32_t index, nr;
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const uint8_t * write_buffer = buffer;
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uint32_t page = pos;
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nr = size;
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for (index = 0; index < nr; index++)
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{
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uint8_t send_buffer[4];
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send_buffer[0] = AT45DB_MM_PAGE_PROG_THRU_BUFFER1;
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send_buffer[1] = (uint8_t) (page >> 6);
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send_buffer[2] = (uint8_t) (page << 2);
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send_buffer[3] = 0;
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rt_spi_send_then_send(spi_flash_at45dbxx.rt_spi_device, send_buffer, 4, write_buffer, 512);
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write_buffer += 512;
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page++;
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wait_busy();
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}
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return size;
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}
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static rt_size_t AT45DB_flash_write_page_1024(rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
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{
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rt_uint32_t index, nr;
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const uint8_t * write_buffer = buffer;
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uint32_t page = pos;
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nr = size;
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for (index = 0; index < nr; index++)
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{
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uint8_t send_buffer[4];
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send_buffer[0] = AT45DB_MM_PAGE_PROG_THRU_BUFFER1;
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send_buffer[1] = (uint8_t) (page >> 5);
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send_buffer[2] = (uint8_t) (page << 3);
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send_buffer[3] = 0;
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rt_spi_send_then_send(spi_flash_at45dbxx.rt_spi_device, send_buffer, 4, write_buffer, 1024);
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write_buffer += 1024;
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page++;
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wait_busy();
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}
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return size;
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}
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rt_err_t at45dbxx_init(const char * flash_device_name, const char * spi_device_name)
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{
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struct rt_spi_device * rt_spi_device;
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struct JEDEC_ID * JEDEC_ID;
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rt_spi_device = (struct rt_spi_device *)rt_device_find(spi_device_name);
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if(rt_spi_device == RT_NULL)
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{
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FLASH_TRACE("spi device %s not found!\r\n", spi_device_name);
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return -RT_ENOSYS;
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}
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spi_flash_at45dbxx.rt_spi_device = rt_spi_device;
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/* config spi */
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{
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struct rt_spi_configuration cfg;
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cfg.data_width = 8;
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cfg.mode = RT_SPI_MODE_0 | RT_SPI_MSB; /* SPI Compatible Modes 0 and 3 */
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cfg.max_hz = 66000000; /* Atmel RapidS Serial Interface: 66MHz Maximum Clock Frequency */
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rt_spi_configure(spi_flash_at45dbxx.rt_spi_device, &cfg);
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}
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/* read JEDEC ID */
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{
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uint8_t cmd;
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uint8_t id_recv[6];
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JEDEC_ID = (struct JEDEC_ID *)id_recv;
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cmd = AT45DB_CMD_JEDEC_ID;
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rt_spi_send_then_recv(spi_flash_at45dbxx.rt_spi_device, &cmd, 1, id_recv, 6);
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/**< 1FH = Atmel */
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/**< 001 = Atmel DataFlash */
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if(JEDEC_ID->manufacturer_id != 0x1F || JEDEC_ID->family_code != 0x01)
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{
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FLASH_TRACE("Manufacturer¡¯s ID or Memory Type error!\r\n");
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FLASH_TRACE("JEDEC Read-ID Data : %02X %02X %02X\r\n", id_recv[0], id_recv[1], id_recv[2]);
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return -RT_ENOSYS;
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}
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if(JEDEC_ID->density_code == DENSITY_CODE_011D)
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{
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/**< AT45DB011D Density Code : 00010 = 1-Mbit */
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FLASH_TRACE("AT45DB011D detection\r\n");
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spi_flash_at45dbxx.geometry.bytes_per_sector = 256; /* Page Erase (256 Bytes) */
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spi_flash_at45dbxx.geometry.sector_count = 512; /* 1-Mbit / 8 / 256 = 512 */
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spi_flash_at45dbxx.geometry.block_size = 1024*2; /* Block Erase (2-Kbytes) */
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}
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else if(JEDEC_ID->density_code == DENSITY_CODE_021D)
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{
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/**< AT45DB021D Density Code : 00011 = 2-Mbit */
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FLASH_TRACE("AT45DB021D detection\r\n");
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spi_flash_at45dbxx.geometry.bytes_per_sector = 256; /* Page Erase (256 Bytes) */
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spi_flash_at45dbxx.geometry.sector_count = 512*2; /* 2-Mbit / 8 / 256 = 1024 */
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spi_flash_at45dbxx.geometry.block_size = 1024*2; /* Block Erase (2-Kbytes) */
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}
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else if(JEDEC_ID->density_code == DENSITY_CODE_041D)
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{
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/**< AT45DB041D Density Code : 00100 = 4-Mbit */
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FLASH_TRACE("AT45DB041D detection\r\n");
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spi_flash_at45dbxx.geometry.bytes_per_sector = 256; /* Page Erase (256 Bytes) */
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spi_flash_at45dbxx.geometry.sector_count = 512*4; /* 4-Mbit / 8 / 256 = 2048 */
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spi_flash_at45dbxx.geometry.block_size = 1024*2; /* Block Erase (2-Kbytes) */
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}
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else if(JEDEC_ID->density_code == DENSITY_CODE_081D)
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{
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/**< AT45DB081D Density Code : 00101 = 8-Mbit */
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FLASH_TRACE("AT45DB081D detection\r\n");
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spi_flash_at45dbxx.geometry.bytes_per_sector = 256; /* Page Erase (256 Bytes) */
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spi_flash_at45dbxx.geometry.sector_count = 512*8; /* 8-Mbit / 8 / 256 = 4096 */
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spi_flash_at45dbxx.geometry.block_size = 1024*2; /* Block Erase (2-Kbytes) */
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}
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else if(JEDEC_ID->density_code == DENSITY_CODE_161D)
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{
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/**< AT45DB161D Density Code : 00110 = 16-Mbit */
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FLASH_TRACE("AT45DB161D detection\r\n");
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spi_flash_at45dbxx.geometry.bytes_per_sector = 512; /* Page Erase (512 Bytes) */
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spi_flash_at45dbxx.geometry.sector_count = 256*16; /* 16-Mbit / 8 / 512 = 4096 */
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spi_flash_at45dbxx.geometry.block_size = 1024*4; /* Block Erase (4-Kbytes) */
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}
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else if(JEDEC_ID->density_code == DENSITY_CODE_321D)
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{
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/**< AT45DB321D Density Code : 00111 = 32-Mbit */
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FLASH_TRACE("AT45DB321D detection\r\n");
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spi_flash_at45dbxx.geometry.bytes_per_sector = 512; /* Page Erase (512 Bytes) */
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spi_flash_at45dbxx.geometry.sector_count = 256*32; /* 32-Mbit / 8 / 512 = 8192 */
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spi_flash_at45dbxx.geometry.block_size = 1024*4; /* Block Erase (4-Kbytes) */
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}
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else if(JEDEC_ID->density_code == DENSITY_CODE_642D)
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{
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/**< AT45DB642D Density Code : 01000 = 64-Mbit */
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FLASH_TRACE("AT45DB642D detection\r\n");
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spi_flash_at45dbxx.geometry.bytes_per_sector = 1024; /* Page Erase (1 Kbyte) */
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spi_flash_at45dbxx.geometry.sector_count = 128*64; /* 64-Mbit / 8 / 1024 = 8192 */
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spi_flash_at45dbxx.geometry.block_size = 1024*8; /* Block Erase (8 Kbytes) */
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}
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else
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{
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FLASH_TRACE("Memory Capacity error!\r\n");
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return -RT_ENOSYS;
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}
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}
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/* register device */
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spi_flash_at45dbxx.flash_device.type = RT_Device_Class_Block;
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spi_flash_at45dbxx.flash_device.init = AT45DB_flash_init;
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spi_flash_at45dbxx.flash_device.open = AT45DB_flash_open;
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spi_flash_at45dbxx.flash_device.close = AT45DB_flash_close;
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spi_flash_at45dbxx.flash_device.control = AT45DB_flash_control;
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if(JEDEC_ID->density_code == DENSITY_CODE_642D)
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{
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spi_flash_at45dbxx.flash_device.read = AT45DB_flash_read_page_1024;
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spi_flash_at45dbxx.flash_device.write = AT45DB_flash_write_page_1024;
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}
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else if(JEDEC_ID->density_code == DENSITY_CODE_161D
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|| JEDEC_ID->density_code == DENSITY_CODE_321D )
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{
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spi_flash_at45dbxx.flash_device.read = AT45DB_flash_read_page_512;
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spi_flash_at45dbxx.flash_device.write = AT45DB_flash_write_page_512;
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}
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else
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{
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spi_flash_at45dbxx.flash_device.read = AT45DB_flash_read_page_256;
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spi_flash_at45dbxx.flash_device.write = AT45DB_flash_write_page_256;
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}
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/* no private */
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spi_flash_at45dbxx.flash_device.user_data = RT_NULL;
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rt_device_register(&spi_flash_at45dbxx.flash_device, flash_device_name,
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RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STANDALONE);
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return RT_EOK;
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}
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