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Diffstat (limited to 'components/drivers/spi/spi_flash_at45dbxx.c')
-rw-r--r--components/drivers/spi/spi_flash_at45dbxx.c437
1 files changed, 437 insertions, 0 deletions
diff --git a/components/drivers/spi/spi_flash_at45dbxx.c b/components/drivers/spi/spi_flash_at45dbxx.c
new file mode 100644
index 0000000000..be474f7c65
--- /dev/null
+++ b/components/drivers/spi/spi_flash_at45dbxx.c
@@ -0,0 +1,437 @@
+/*
+ * File : rtdef.h
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006 - 2011, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date Author Notes
+ * 2011-12-16 aozima the first version
+ */
+
+#include <stdint.h>
+#include "spi_flash_at45dbxx.h"
+
+#define FLASH_DEBUG
+#define DMA_BUFFER_SIZE 512
+
+#ifdef FLASH_DEBUG
+#define FLASH_TRACE rt_kprintf
+#else
+#define FLASH_TRACE(...)
+#endif /**< #ifdef FLASH_DEBUG */
+
+/* JEDEC Manufacturer��s ID */
+#define MF_ID (0x1F) /* atmel */
+#define DENSITY_CODE_011D (0x02) /* AT45DB011D Density Code : 00010 = 1-Mbit */
+#define DENSITY_CODE_021D (0x03) /* AT45DB021D Density Code : 00011 = 2-Mbit */
+#define DENSITY_CODE_041D (0x04) /* AT45DB041D Density Code : 00100 = 4-Mbit */
+#define DENSITY_CODE_081D (0x05) /* AT45DB081D Density Code : 00101 = 8-Mbit */
+#define DENSITY_CODE_161D (0x06) /* AT45DB161D Density Code : 00110 = 16-Mbit */
+#define DENSITY_CODE_321D (0x07) /* AT45DB321D Density Code : 00111 = 32-Mbit */
+#define DENSITY_CODE_642D (0x08) /* AT45DB642D Density Code : 01000 = 64-Mbit */
+
+struct JEDEC_ID
+{
+ uint8_t manufacturer_id; /* Manufacturer ID */
+ uint8_t density_code:5; /* Density Code */
+ uint8_t family_code:3; /* Family Code */
+ uint8_t version_code:5; /* Product Version Code */
+ uint8_t mlc_code:3; /* MLC Code */
+ uint8_t byte_count; /* Byte Count */
+};
+
+#define AT45DB_BUFFER_1_WRITE 0x84
+#define AT45DB_BUFFER_2_WRITE 0x87
+#define AT45DB_BUFFER_1_READ 0xD4
+#define AT45DB_BUFFER_2_READ 0xD6
+#define AT45DB_B1_TO_MM_PAGE_PROG_WITH_ERASE 0x83
+#define AT45DB_B2_TO_MM_PAGE_PROG_WITH_ERASE 0x86
+#define AT45DB_MM_PAGE_TO_B1_XFER 0x53
+#define AT45DB_MM_PAGE_TO_B2_XFER 0x55
+#define AT45DB_PAGE_ERASE 0x81
+#define AT45DB_SECTOR_ERASE 0x7C
+#define AT45DB_READ_STATE_REGISTER 0xD7
+#define AT45DB_MM_PAGE_READ 0xD2
+#define AT45DB_MM_PAGE_PROG_THRU_BUFFER1 0x82
+#define AT45DB_CMD_JEDEC_ID 0x9F
+
+static struct spi_flash_at45dbxx spi_flash_at45dbxx;
+
+/*****************************************************************************/
+/*Status Register Format: */
+/* ------------------------------------------------------------------------- */
+/* | bit7 | bit6 | bit5 | bit4 | bit3 | bit2 | bit1 | bit0 | */
+/* |--------|--------|--------|--------|--------|--------|--------|--------| */
+/* |RDY/BUSY| COMP | device density | X | X | */
+/* ------------------------------------------------------------------------- */
+/* 0:busy | | AT45DB041:0111 | protect|page size */
+/* 1:ready | | AT45DB161:1011 | */
+/* --------------------------------------------------------------------------*/
+/*****************************************************************************/
+static uint8_t AT45DB_StatusRegisterRead(void)
+{
+ return rt_spi_sendrecv8(spi_flash_at45dbxx.rt_spi_device, AT45DB_READ_STATE_REGISTER);
+}
+
+static void wait_busy(void)
+{
+ uint16_t i = 0;
+ while (i++ < 10000)
+ {
+ if (AT45DB_StatusRegisterRead() & 0x80)
+ {
+ return;
+ }
+ }
+ FLASH_TRACE("\r\nSPI_FLASH timeout!!!\r\n");
+}
+
+/* RT-Thread Device Driver Interface */
+static rt_err_t AT45DB_flash_init(rt_device_t dev)
+{
+ return RT_EOK;
+}
+
+static rt_err_t AT45DB_flash_open(rt_device_t dev, rt_uint16_t oflag)
+{
+
+ return RT_EOK;
+}
+
+static rt_err_t AT45DB_flash_close(rt_device_t dev)
+{
+ return RT_EOK;
+}
+
+static rt_err_t AT45DB_flash_control(rt_device_t dev, rt_uint8_t cmd, void *args)
+{
+ RT_ASSERT(dev != RT_NULL);
+
+ if (cmd == RT_DEVICE_CTRL_BLK_GETGEOME)
+ {
+ struct rt_device_blk_geometry *geometry;
+
+ geometry = (struct rt_device_blk_geometry *)args;
+ if (geometry == RT_NULL) return -RT_ERROR;
+
+ geometry->bytes_per_sector = 512;
+ geometry->sector_count = 4096;
+ geometry->block_size = 4096; /* block erase: 4k */
+ }
+
+ return RT_EOK;
+}
+
+static rt_size_t AT45DB_flash_read_page_256(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
+{
+ uint32_t index, nr;
+ uint8_t * read_buffer = buffer;
+
+ nr = size;
+
+ for (index = 0; index < nr; index++)
+ {
+ uint32_t page = pos;
+ uint8_t send_buffer[8];
+ uint32_t i;
+
+ for(i=0; i<sizeof(send_buffer); i++)
+ {
+ send_buffer[i] = 0;
+ }
+
+ send_buffer[0] = AT45DB_MM_PAGE_READ;
+ send_buffer[1] = (uint8_t)(page >> 7);
+ send_buffer[2] = (uint8_t)(page << 1);
+
+ rt_spi_send_then_recv(spi_flash_at45dbxx.rt_spi_device, send_buffer, 8, read_buffer, 256);
+ read_buffer += 256;
+ page++;
+ }
+
+ return size;
+}
+
+static rt_size_t AT45DB_flash_read_page_512(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
+{
+ uint32_t index, nr;
+ uint8_t * read_buffer = buffer;
+
+ nr = size;
+
+ for (index = 0; index < nr; index++)
+ {
+ uint32_t page = pos;
+ uint8_t send_buffer[8];
+ uint32_t i;
+
+ for(i=0; i<sizeof(send_buffer); i++)
+ {
+ send_buffer[i] = 0;
+ }
+
+ send_buffer[0] = AT45DB_MM_PAGE_READ;
+ send_buffer[1] = (uint8_t)(page >> 6);
+ send_buffer[2] = (uint8_t)(page << 2);
+
+ rt_spi_send_then_recv(spi_flash_at45dbxx.rt_spi_device, send_buffer, 8, read_buffer, 512);
+ read_buffer += 512;
+ page++;
+ }
+
+ return size;
+}
+
+static rt_size_t AT45DB_flash_read_page_1024(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
+{
+ uint32_t index, nr;
+ uint8_t * read_buffer = buffer;
+
+ nr = size;
+
+ for (index = 0; index < nr; index++)
+ {
+ uint32_t page = pos;
+ uint8_t send_buffer[8];
+ uint32_t i;
+
+ for(i=0; i<sizeof(send_buffer); i++)
+ {
+ send_buffer[i] = 0;
+ }
+
+ send_buffer[0] = AT45DB_MM_PAGE_READ;
+ send_buffer[1] = (uint8_t)(page >> 5);
+ send_buffer[2] = (uint8_t)(page << 3);
+
+ rt_spi_send_then_recv(spi_flash_at45dbxx.rt_spi_device, send_buffer, 8, read_buffer, 1024);
+ read_buffer += 1024;
+ page++;
+ }
+
+ return size;
+}
+
+static rt_size_t AT45DB_flash_write_page_256(rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
+{
+ rt_uint32_t index, nr;
+ const uint8_t * write_buffer = buffer;
+
+ nr = size;
+
+ for (index = 0; index < nr; index++)
+ {
+ uint32_t page = pos;
+ uint8_t send_buffer[4];
+
+ send_buffer[0] = AT45DB_MM_PAGE_PROG_THRU_BUFFER1;
+ send_buffer[1] = (uint8_t) (page >> 7);
+ send_buffer[2] = (uint8_t) (page << 1);
+ send_buffer[3] = 0;
+
+ rt_spi_send_then_send(spi_flash_at45dbxx.rt_spi_device, send_buffer, 4, write_buffer, 256);
+
+ write_buffer += 256;
+ page++;
+
+ wait_busy();
+ }
+
+ return size;
+}
+
+static rt_size_t AT45DB_flash_write_page_512(rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
+{
+ rt_uint32_t index, nr;
+ const uint8_t * write_buffer = buffer;
+
+ nr = size;
+
+ for (index = 0; index < nr; index++)
+ {
+ uint32_t page = pos;
+ uint8_t send_buffer[4];
+
+ send_buffer[0] = AT45DB_MM_PAGE_PROG_THRU_BUFFER1;
+ send_buffer[1] = (uint8_t) (page >> 6);
+ send_buffer[2] = (uint8_t) (page << 2);
+ send_buffer[3] = 0;
+
+ rt_spi_send_then_send(spi_flash_at45dbxx.rt_spi_device, send_buffer, 4, write_buffer, 512);
+
+ write_buffer += 512;
+ page++;
+
+ wait_busy();
+ }
+
+ return size;
+}
+
+static rt_size_t AT45DB_flash_write_page_1024(rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
+{
+ rt_uint32_t index, nr;
+ const uint8_t * write_buffer = buffer;
+
+ nr = size;
+
+ for (index = 0; index < nr; index++)
+ {
+ uint32_t page = pos;
+ uint8_t send_buffer[4];
+
+ send_buffer[0] = AT45DB_MM_PAGE_PROG_THRU_BUFFER1;
+ send_buffer[1] = (uint8_t) (page >> 5);
+ send_buffer[2] = (uint8_t) (page << 3);
+ send_buffer[3] = 0;
+
+ rt_spi_send_then_send(spi_flash_at45dbxx.rt_spi_device, send_buffer, 4, write_buffer, 1024);
+
+ write_buffer += 1024;
+ page++;
+
+ wait_busy();
+ }
+
+ return size;
+}
+
+rt_err_t at45dbxx_init(const char * flash_device_name, const char * spi_device_name)
+{
+ struct rt_spi_device * rt_spi_device;
+ struct JEDEC_ID * JEDEC_ID;
+
+ rt_spi_device = (struct rt_spi_device *)rt_device_find(spi_device_name);
+ if(rt_spi_device == RT_NULL)
+ {
+ FLASH_TRACE("spi device %s not found!\r\n", spi_device_name);
+ return -RT_ENOSYS;
+ }
+ spi_flash_at45dbxx.rt_spi_device = rt_spi_device;
+
+ /* config spi */
+ {
+ struct rt_spi_configuration cfg;
+ cfg.data_width = 8;
+ cfg.mode = RT_SPI_MODE_0 | RT_SPI_MSB; /* SPI Compatible Modes 0 and 3 */
+ cfg.max_hz = 66000000; /* Atmel RapidS Serial Interface: 66MHz Maximum Clock Frequency */
+ rt_spi_configure(spi_flash_at45dbxx.rt_spi_device, &cfg);
+ }
+
+ /* read JEDEC ID */
+ {
+ uint8_t cmd;
+ uint8_t id_recv[6];
+ JEDEC_ID = (struct JEDEC_ID *)id_recv;
+
+ cmd = AT45DB_CMD_JEDEC_ID;
+ rt_spi_send_then_recv(spi_flash_at45dbxx.rt_spi_device, &cmd, 1, id_recv, 6);
+
+ /**< 1FH = Atmel */
+ /**< 001 = Atmel DataFlash */
+ if(JEDEC_ID->manufacturer_id != 0x1F || JEDEC_ID->family_code != 0x01)
+ {
+ FLASH_TRACE("Manufacturer��s ID or Memory Type error!\r\n");
+ FLASH_TRACE("JEDEC Read-ID Data : %02X %02X %02X\r\n", id_recv[0], id_recv[1], id_recv[2]);
+ return -RT_ENOSYS;
+ }
+
+ if(JEDEC_ID->density_code == DENSITY_CODE_011D)
+ {
+ /**< AT45DB011D Density Code : 00010 = 1-Mbit */
+ FLASH_TRACE("AT45DB011D detection\r\n");
+ spi_flash_at45dbxx.geometry.bytes_per_sector = 256; /* Page Erase (256 Bytes) */
+ spi_flash_at45dbxx.geometry.sector_count = 512; /* 1-Mbit / 8 / 256 = 512 */
+ spi_flash_at45dbxx.geometry.block_size = 1024*2; /* Block Erase (2-Kbytes) */
+ }
+ else if(JEDEC_ID->density_code == DENSITY_CODE_021D)
+ {
+ /**< AT45DB021D Density Code : 00011 = 2-Mbit */
+ FLASH_TRACE("AT45DB021D detection\r\n");
+ spi_flash_at45dbxx.geometry.bytes_per_sector = 256; /* Page Erase (256 Bytes) */
+ spi_flash_at45dbxx.geometry.sector_count = 512*2; /* 2-Mbit / 8 / 256 = 1024 */
+ spi_flash_at45dbxx.geometry.block_size = 1024*2; /* Block Erase (2-Kbytes) */
+ }
+ else if(JEDEC_ID->density_code == DENSITY_CODE_041D)
+ {
+ /**< AT45DB041D Density Code : 00100 = 4-Mbit */
+ FLASH_TRACE("AT45DB041D detection\r\n");
+ spi_flash_at45dbxx.geometry.bytes_per_sector = 256; /* Page Erase (256 Bytes) */
+ spi_flash_at45dbxx.geometry.sector_count = 512*4; /* 4-Mbit / 8 / 256 = 2048 */
+ spi_flash_at45dbxx.geometry.block_size = 1024*2; /* Block Erase (2-Kbytes) */
+ }
+ else if(JEDEC_ID->density_code == DENSITY_CODE_081D)
+ {
+ /**< AT45DB081D Density Code : 00101 = 8-Mbit */
+ FLASH_TRACE("AT45DB081D detection\r\n");
+ spi_flash_at45dbxx.geometry.bytes_per_sector = 256; /* Page Erase (256 Bytes) */
+ spi_flash_at45dbxx.geometry.sector_count = 512*8; /* 8-Mbit / 8 / 256 = 4096 */
+ spi_flash_at45dbxx.geometry.block_size = 1024*2; /* Block Erase (2-Kbytes) */
+ }
+ else if(JEDEC_ID->density_code == DENSITY_CODE_161D)
+ {
+ /**< AT45DB161D Density Code : 00110 = 16-Mbit */
+ FLASH_TRACE("AT45DB161D detection\r\n");
+ spi_flash_at45dbxx.geometry.bytes_per_sector = 512; /* Page Erase (512 Bytes) */
+ spi_flash_at45dbxx.geometry.sector_count = 256*16; /* 16-Mbit / 8 / 512 = 4096 */
+ spi_flash_at45dbxx.geometry.block_size = 1024*4; /* Block Erase (4-Kbytes) */
+ }
+ else if(JEDEC_ID->density_code == DENSITY_CODE_321D)
+ {
+ /**< AT45DB321D Density Code : 00111 = 32-Mbit */
+ FLASH_TRACE("AT45DB321D detection\r\n");
+ spi_flash_at45dbxx.geometry.bytes_per_sector = 512; /* Page Erase (512 Bytes) */
+ spi_flash_at45dbxx.geometry.sector_count = 256*32; /* 32-Mbit / 8 / 512 = 8192 */
+ spi_flash_at45dbxx.geometry.block_size = 1024*4; /* Block Erase (4-Kbytes) */
+ }
+ else if(JEDEC_ID->density_code == DENSITY_CODE_642D)
+ {
+ /**< AT45DB642D Density Code : 01000 = 64-Mbit */
+ FLASH_TRACE("AT45DB642D detection\r\n");
+ spi_flash_at45dbxx.geometry.bytes_per_sector = 1024; /* Page Erase (1 Kbyte) */
+ spi_flash_at45dbxx.geometry.sector_count = 128*64; /* 64-Mbit / 8 / 1024 = 8192 */
+ spi_flash_at45dbxx.geometry.block_size = 1024*8; /* Block Erase (8 Kbytes) */
+ }
+ else
+ {
+ FLASH_TRACE("Memory Capacity error!\r\n");
+ return -RT_ENOSYS;
+ }
+ }
+
+ /* register device */
+ spi_flash_at45dbxx.flash_device.type = RT_Device_Class_Block;
+ spi_flash_at45dbxx.flash_device.init = AT45DB_flash_init;
+ spi_flash_at45dbxx.flash_device.open = AT45DB_flash_open;
+ spi_flash_at45dbxx.flash_device.close = AT45DB_flash_close;
+ spi_flash_at45dbxx.flash_device.control = AT45DB_flash_control;
+
+ if(JEDEC_ID->density_code == DENSITY_CODE_642D)
+ {
+ spi_flash_at45dbxx.flash_device.read = AT45DB_flash_read_page_1024;
+ spi_flash_at45dbxx.flash_device.write = AT45DB_flash_write_page_1024;
+ }
+ else if(JEDEC_ID->density_code == DENSITY_CODE_161D
+ || JEDEC_ID->density_code == DENSITY_CODE_321D )
+ {
+ spi_flash_at45dbxx.flash_device.read = AT45DB_flash_read_page_512;
+ spi_flash_at45dbxx.flash_device.write = AT45DB_flash_write_page_512;
+ }
+ else
+ {
+ spi_flash_at45dbxx.flash_device.read = AT45DB_flash_read_page_256;
+ spi_flash_at45dbxx.flash_device.write = AT45DB_flash_write_page_256;
+ }
+
+ /* no private */
+ spi_flash_at45dbxx.flash_device.user_data = RT_NULL;
+
+ rt_device_register(&spi_flash_at45dbxx.flash_device, flash_device_name,
+ RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STANDALONE);
+
+ return RT_EOK;
+}
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