at91c_spi_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           : AT91C_SPI_DataFlash.h*/
/* Object              : Data Flash Atmel Description File*/
/* Translator          :*/

/* 1.0 03/04/01 HI	: Creation*/
/* 1.2 20/10/02 FB	: Adapatation Service and Lib v3*/
/*---------------------------------------------------------------------------*/

#ifndef AT91C_DataFlash_h
#define AT91C_DataFlash_h

#include "AT91RM9200.h"
#include "lib_AT91RM9200.h"

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;
} 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*/
} AT91S_DataflashFeatures, *AT91PS_DataflashFeatures;

/*---------------------------------------------*/
/* DataFlash Structure Definition   		   */
/*---------------------------------------------*/
typedef struct _AT91S_DataFlash
{
	BLK_DEV blkDev; 
	int drive;
    int blkOffset	;
	AT91PS_DataflashDesc		 	pDataFlashDesc;	/* dataflash descriptor*/
	AT91PS_DataflashFeatures		pDevice;		/* Pointer on a dataflash features array  */
}AT91S_DataFlash_Device, *AT91PS_DataFlash_Device;

/* Global Variables*/
extern AT91S_DataflashFeatures		DeviceAT45DB;
extern AT91S_DataflashFeatures		DeviceAT45DCB;

#define DATAFLASH_TCSS		(0xf << 16)	/* 250ns 12/48000000 */
#define DATAFLASH_TCHS		(0x1 << 24)	/* 250ns 32*1/48000000 */

#define AT91C_SPI_PCS0_SERIAL_DATAFLASH		0xE     /* Chip Select 0 : NPCS0 %1110 */
#define AT91C_SPI_PCS3_DATAFLASH_CARD		0x7     /* Chip Select 3 : NPCS3 %0111 */
/* DataFlash return value */
#define DATAFLASH_BUSY				0x00
#define DATAFLASH_OK				0x01
#define DATAFLASH_ERROR				0x02
#define DATAFLASH_MEMORY_OVERFLOW	0x03
#define DATAFLASH_BAD_COMMAND		0x04
#define DATAFLASH_BAD_ADDRESS		0x05

#define DATAFLASH_CLK				5000000
#define DATAFLASH_TIMEOUT			30
/* Driver State */
#define IDLE						0x0
#define	BUSY						0x1
#ifdef ERROR
#undef ERROR
#endif
#define	ERROR						0x2

/* 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 */

/****************************************************************************************************/    

#endif