s29gl256n.h

系统通过JTAG接口烧结挂接在LXFXP2 上的s29gl256N的FLASH的代码,

/***********************************************************************/ 
/*                                                                     */ 
/* Module Name   : S29GL256N.h                                         */ 
/*                                                                     */ 
/* Description   : Implementation of a flash module for the SPANSION   */ 
/*                 S29GL256N flash chip.                               */ 
/*                                                                     */ 
/*                                                                     */ 
/* Document Ref. : - Datasheets for the S29GL256N.                     */ 
/*                                                                     */ 
/* Function List : Exported                                            */ 
/* Note          : The flash memory sub-system consists of 1 S29GL256N */ 
/*                 flash chips,forming a 16-bit data bus. Totally      */
/*                 32M Bytes                                           */ 
/*                                                                     */ 
/* modification history :                                              */ 
/***********************************************************************/ 

/***********************************************************************
* 宏定义
************************************************************************/
#define INIT_TEST   
#define WRITE_TEST   
#define CHECKING_TEST   
#define ERASE_TEST   

/***********************************************************************
* 常量定义
************************************************************************/
#define FLASH_ACCESS_OFFSET                 2
#define ROM_FLASH_SIZE                      (32*0x100000)
#define FLASHSTARTADDRESS                   0x00000000     //tjag 编程设置为0
#define FLASHENDADDRESS                     (FLASHSTARTADDRESS+0x100000)
#define FLASH_SECTOR_SIZE                   (64*1024)
#define FLASH_MASK                          (0xffff0000)
#define FLASH_SECTOR_NUM                    256
#define FLASH_CODE_LOCK_MASK                0x1

#define FLASH_ERASE_BLOCK_LOOP              0x100
#define FLASH_WRITE_LOOP                    0x100

//Identification ID definition
#define FLASH_MANUFACTOR_ID                 0x01
#define FLASH_DEVICE_ID1                    0x227E
#define FLASH_DEVICE_ID2                    0x2222
#define FLASH_DEVICE_ID3                    0x2201


//Write Offset of the registers  
#define FLASH_UNLOCK_OFFSET1                0x555
#define FLASH_UNLOCK_OFFSET2                0x2AA

#define FLASH_MANUFACTOR_ID_OFFSET          0x00                                           
#define FLASH_DEVICE_ID1_OFFSET             0x01
#define FLASH_DEVICE_ID2_OFFSET             0x0E
#define FLASH_DEVICE_ID3_OFFSET             0x0F
                                            
//Write values for the registers                                            
#define FLASH_UNLOCK_CMD1                   0xAA
#define FLASH_UNLOCK_CMD2                   0x55                                            
#define FLASH_ERASE_CMD                     0x80
#define FLASH_CHIP_ERASE_CONFIRM_CMD        0x30
#define FLASH_SECTOR_ERASE_CONFIRM_CMD      0x30
#define FLASH_IDENTIFIER_CMD                0x90
#define FLASH_RESET_CMD                     0xF0
#define FLASH_PROGRAM_CMD                   0xA0


/***********************************************************************
* 类型定义
************************************************************************/
#define OK									0


/***********************************************************************
* 函数声明
************************************************************************/
int S29GL128MInitialization(void); 
int S29GL128MRead(int offset, WORD *bufAddr, int dataLen);  
int S29gl256nWrite(int offset,WORD *bufAddr,int dataLen); 
int S29GL256NErase(int offset, int nBlock);