dataflash.h

(1)基于部分u-boot代码自己调试的vxworks BSP (2)实现了nand/nor flash的tffs文件系统 (3)实现了对spi dataflash的访问 (4)实现了对启动参数

/*---------------------------------------------------------------------------
         ATMEL Microcontroller Software Support  -  ROUSSET  -
---------------------------------------------------------------------------
 The software is delivered "AS IS" without warranty or condition of any
 kind, either express, implied or statutory. This includes without
 limitation any warranty or condition with respect to merchantability or
 fitness for any particular purpose, or against the infringements of
 intellectual property rights of others.
---------------------------------------------------------------------------
 File Name           : AT91_SpiDataFlash.h
 Object              : Data Flash Atmel Description File
 Translator          :

 1.0 03/04/01 HI	: Creation

---------------------------------------------------------------------------*/

#ifndef _DataFlash_h
#define _DataFlash_h


#define CFG_MAX_DATAFLASH_BANKS 	2
#define CFG_DATAFLASH_LOGIC_ADDR_CS0	0xC0000000
#define CFG_DATAFLASH_LOGIC_ADDR_CS3	0xD0000000


typedef struct {
	unsigned long base;		/* logical base address for a bank */
	unsigned long size;		/* total bank size */
	unsigned long page_count;
	unsigned long page_size;
	unsigned long id;		/* device id */
} dataflash_info_t;

typedef unsigned int AT91S_DataFlashStatus;

/*----------------------------------------------------------------------*/
/* DataFlash Structures							*/
/*----------------------------------------------------------------------*/

/*---------------------------------------------*/
/* DataFlash Descriptor Structure Definition   */
/*---------------------------------------------*/
typedef struct _AT91S_DataflashDesc {
	unsigned char 			*tx_cmd_pt;
	unsigned int 			tx_cmd_size;
	unsigned char 			*rx_cmd_pt;
	unsigned int 			rx_cmd_size;
	unsigned char 			*tx_data_pt;
	unsigned int 			tx_data_size;
	unsigned char 			*rx_data_pt;
	unsigned int 			rx_data_size;
	volatile unsigned char 	state;
	volatile unsigned char 	DataFlash_state;
	unsigned char 			command[8];
} AT91S_DataflashDesc, *AT91PS_DataflashDesc;

/*---------------------------------------------*/
/* DataFlash device definition structure       */
/*---------------------------------------------*/
typedef struct _AT91S_Dataflash {
	int pages_number;			/* dataflash page number */
	int pages_size;				/* dataflash page size */
	int page_offset;			/* page offset in command */
	int byte_mask;				/* byte mask in command */
	int cs;
} AT91S_DataflashFeatures, *AT91PS_DataflashFeatures;


/*---------------------------------------------*/
/* DataFlash Structure Definition	       */
/*---------------------------------------------*/
typedef struct _AT91S_DataFlash {
	AT91PS_DataflashDesc pDataFlashDesc;	/* dataflash descriptor */
	AT91PS_DataflashFeatures pDevice;	/* Pointer on a dataflash features array */
} AT91S_DataFlash, *AT91PS_DataFlash;


typedef struct _AT91S_DATAFLASH_INFO {

	AT91S_DataflashDesc 	Desc;
	AT91S_DataflashFeatures Device; /* Pointer on a dataflash features array */
	unsigned long 			logical_address;
	unsigned int 			id;			/* device id */
} AT91S_DATAFLASH_INFO, *AT91PS_DATAFLASH_INFO;


/*-------------------------------------------------------------------------------------------------*/

#define AT45DB161		0x2c
#define AT45DB321		0x34
#define AT45DB642		0x3c
#define AT45DB128		0x10

#define AT91C_DATAFLASH_TIMEOUT		100000	/* For AT91F_DataFlashWaitReady */

/* DataFlash return value */
#define AT91C_DATAFLASH_BUSY			0x00
#define AT91C_DATAFLASH_OK				0x01
#define AT91C_DATAFLASH_ERROR			0x02
#define AT91C_DATAFLASH_MEMORY_OVERFLOW	0x03
#define AT91C_DATAFLASH_BAD_COMMAND		0x04
#define AT91C_DATAFLASH_BAD_ADDRESS		0x05


/* Driver State */
#define IDLE		0x0
#define BUSY		0x1

/* DataFlash Driver State */
#define GET_STATUS	0x0F

/*-------------------------------------------------------------------------------------------------*/
/* Command Definition										   */
/*-------------------------------------------------------------------------------------------------*/

/* READ COMMANDS */
#define DB_CONTINUOUS_ARRAY_READ	0xE8	/* Continuous array read */
#define DB_BURST_ARRAY_READ			0xE8	/* Burst array read */
#define DB_PAGE_READ				0xD2	/* Main memory page read */
#define DB_BUF1_READ				0xD4	/* Buffer 1 read */
#define DB_BUF2_READ				0xD6	/* Buffer 2 read */
#define DB_STATUS					0xD7	/* Status Register */

/* PROGRAM and ERASE COMMANDS */
#define DB_BUF1_WRITE				0x84	/* Buffer 1 write */
#define DB_BUF2_WRITE				0x87	/* Buffer 2 write */
#define DB_BUF1_PAGE_ERASE_PGM		0x83	/* Buffer 1 to main memory page program with built-In erase */
#define DB_BUF1_PAGE_ERASE_FASTPGM	0x93	/* Buffer 1 to main memory page program with built-In erase, Fast program */
#define DB_BUF2_PAGE_ERASE_PGM		0x86	/* Buffer 2 to main memory page program with built-In erase */
#define DB_BUF2_PAGE_ERASE_FASTPGM	0x96	/* Buffer 1 to main memory page program with built-In erase, Fast program */
#define DB_BUF1_PAGE_PGM			0x88	/* Buffer 1 to main memory page program without built-In erase */
#define DB_BUF1_PAGE_FASTPGM		0x98	/* Buffer 1 to main memory page program without built-In erase, Fast program */
#define DB_BUF2_PAGE_PGM			0x89	/* Buffer 2 to main memory page program without built-In erase */
#define DB_BUF2_PAGE_FASTPGM		0x99	/* Buffer 1 to main memory page program without built-In erase, Fast program */
#define DB_PAGE_ERASE				0x81	/* Page Erase */
#define DB_BLOCK_ERASE				0x50	/* Block Erase */
#define DB_PAGE_PGM_BUF1			0x82	/* Main memory page through buffer 1 */
#define DB_PAGE_FASTPGM_BUF1		0x92	/* Main memory page through buffer 1, Fast program */
#define DB_PAGE_PGM_BUF2			0x85	/* Main memory page through buffer 2 */
#define DB_PAGE_FastPGM_BUF2		0x95	/* Main memory page through buffer 2, Fast program */

/* ADDITIONAL COMMANDS */
#define DB_PAGE_2_BUF1_TRF			0x53	/* Main memory page to buffer 1 transfert */
#define DB_PAGE_2_BUF2_TRF			0x55	/* Main memory page to buffer 2 transfert */
#define DB_PAGE_2_BUF1_CMP			0x60	/* Main memory page to buffer 1 compare */
#define DB_PAGE_2_BUF2_CMP			0x61	/* Main memory page to buffer 2 compare */
#define DB_AUTO_PAGE_PGM_BUF1		0x58	/* Auto page rewrite throught buffer 1 */
#define DB_AUTO_PAGE_PGM_BUF2		0x59	/* Auto page rewrite throught buffer 2 */

/*-------------------------------------------------------------------------------------------------*/

extern AT91S_DATAFLASH_INFO dataflash_info[CFG_MAX_DATAFLASH_BANKS];

extern void AT91F_SpiInit (void);
extern int AT91F_DataflashProbe (int i, AT91PS_DataflashDesc pDesc);
extern int AT91F_DataFlashRead (AT91PS_DataFlash, unsigned long , unsigned long, char *);				
extern AT91S_DataFlashStatus AT91F_DataFlashWrite(AT91PS_DataFlash ,unsigned char *, int, int);
extern int AT91F_DataflashInit (void);
extern void AT91F_DataflashPrintInfo(void);
extern int addr_dataflash (unsigned long addr);
extern int read_dataflash (unsigned long addr, unsigned long size, char *result);
extern int write_dataflash (unsigned long addr_dest, unsigned int addr_src, unsigned int size);


#endif