/************************************************************************* *	$File name  				: flash.C	 					     	 * *	$Create date(YYYY-MM-DD)	: 2002-12-05			                 * *	$Version					: 1.0A		                             * *									                                     * *	$All copyrights reserved by GSL ( 2002 )			                 * *									                                     * *	$Writen by  : Eric wang						                         * *									                                     * *	History: 2002-12-05 addrs for word	                                 * *************************************************************************/#include "flash.h"#ifndef COMPLETE{	#define COMPLETE 0}#ifndef FAIL{	#define FAIL 1}#define FLASH_ROM 0x00800000#define ADDR_UNLOCK0 0x00800555#define ADDR_UNLOCK1 0x008002AA#define COM_UNLOCK0 0x00AA#define COM_UNLOCK1 0x0055#define MBM29LV160TE//#define MBM29LV160BE#ifdef MBM29LV160TE	unsigned long const BlockAddress[] = 	{		0x800000,	//block0		0x808000,	//block1		0x810000,	//block2		0x818000,	//block3		0x820000,	//block4		0x828000,	//block5		0x830000,	//block6		0x838000,	//block7		0x840000,	//block8		0x848000,	//block9		0x850000,	//block10		0x858000,	//block11		0x860000,	//block12		0x868000,	//block13		0x870000,	//block14		0x878000,	//block15		0x880000,	//block16		0x888000,	//block17		0x890000,	//block18		0x898000,	//block19		0x8a0000,	//block20		0x8a8000,	//block21		0x8b0000,	//block22		0x8b8000,	//block23		0x8c0000,	//block24		0x8c8000,	//block25		0x8d0000,	//block26		0x8d8000,	//block27		0x8e0000,	//block28		0x8e8000,	//block29		0x8f0000,	//block30		0x8f8000,	//block31		0x8fc000,	//block32		0x8fd000,	//block33		0x8fe000	//block34			};#endif#ifdef MBM29LV160BE	unsigned long const BlockAddress[] = 	{		0x800000,	//block0		0x802000,	//block1		0x803000,	//block2		0x804000,	//block3		0x808000,	//block4		0x810000,	//block5		0x818000,	//block6		0x820000,	//block7		0x828000,	//block8		0x830000,	//block9		0x838000,	//block10		0x840000,	//block11		0x848000,	//block12		0x850000,	//block13		0x858000,	//block14		0x860000,	//block15		0x868000,	//block16		0x870000,	//block17		0x878000,	//block18		0x880000,	//block19		0x888000,	//block20		0x890000,	//block21		0x898000,	//block22		0x8a0000,	//block23		0x8a8000,	//block24		0x8b0000,	//block25		0x8b8000,	//block26		0x8c0000,	//block27		0x8c8000,	//block28		0x8d0000,	//block29		0x8d8000,	//block30		0x8e0000,	//block31		0x8e8000,	//block32		0x8f0000,	//block33		0x8f8000	//block34	};#endifvoid FlashReset(void){	unsigned short *address;		address = (unsigned short *)FLASH_ROM;	*address = 0x00F0;}/*************************************************************** *Purpose    Read flash identifier code                        * *Prototype  void ReadFlashID(unsigned short *buf)			   * *Parameters buf : buf to save flash memory identifier codes   * *				   as manufacturing code device code,etc.      *   *Remarks                                                      * ***************************************************************/void ReadFlashID(unsigned short *buf){	unsigned short Manu_code = 0;	unsigned short Dev_code = 0;	unsigned short *address;	unsigned short *tmp_buf = buf;	 	// autoselect command	address = (unsigned short *)ADDR_UNLOCK0;	*address = COM_UNLOCK0;	address = (unsigned short *)ADDR_UNLOCK1;	*address = COM_UNLOCK1;	address = (unsigned short *)ADDR_UNLOCK0;	*address = 0x0090;		// get id	address = (unsigned short *)FLASH_ROM;	Manu_code = *address;	address++;	Dev_code = *address;		*tmp_buf++ = Manu_code;	*tmp_buf = Dev_code;		FlashReset ();		}/******************************************************** *Notice:												* *	Parameter: addr : 0x000000 - 0x100000				* *			   size : 8k, 2*4k, 16k, 31 * 32K in word	* *	Return :											* *			   COMPLETE = SUCCESS TO ERASE				* *			   FAIL = FAILED TO ERASE					* ********************************************************/short EraseFlashChip(void){	unsigned short *address;	unsigned char Data = 0; 	// chip erase command	address = (unsigned short *)ADDR_UNLOCK0;	*address = COM_UNLOCK0;	address = (unsigned short *)ADDR_UNLOCK1;	*address = COM_UNLOCK1;	address = (unsigned short *)ADDR_UNLOCK0;	*address = 0x0080;		*address = COM_UNLOCK0;	address = (unsigned short *)ADDR_UNLOCK1;	*address = COM_UNLOCK1;	address = (unsigned short *)ADDR_UNLOCK0;	*address = 0x0010;	// /data polling	address = (unsigned short *)FLASH_ROM;	Data = (unsigned char)(*address);		while ((Data&0x80) != 0x80)				// DQ7 == 1 erase complete	{		if ((Data&0x20) == 0x20)			// DQ5 == 1 erase exceed timing limits		{			Data = (unsigned char)(*address);			if ((Data&0x80) == 0x80)			{				break;			}			else			{				return FAIL;			}		}		Data = (unsigned char)(*address);	}	Data = (unsigned char)(*address);	if (Data == 0xFF)	{		return COMPLETE;	}		else	{		return FAIL;	}}/*********************************************************************Purpose    Erase flash data in block size                    		**Prototype  short EraseFlash(unsigned long addr, unsigned long size)*           **Parameters addr : starting address		                      		**           size : size of data erase from flash in word.			**                  The size should be equal unit size.				**				  (64K in block size in flash memory)		   		**Result     On success operation return 0,else return 1.      		**Remarks                                                      		**********************************************************************/short EraseFlash(unsigned long addr, unsigned long size){	unsigned short *address;	unsigned char Data = 0; 		unsigned long era_addrs[35];	unsigned long end_addr;	unsigned char era_no = 1;	unsigned char i;		for (i=0; i<35; i++)	{		era_addrs[i] = 0;	}	end_addr = addr + size;	// get erase address	era_addrs[0] = addr;	for (i=0; i<35; i++)	{		if (BlockAddress[i] <= addr)		{			continue;		}		if ((BlockAddress[i]>addr) && (BlockAddress[i]<end_addr))		{			era_addrs[era_no] = BlockAddress[i];			era_no++;			continue;				}				if (BlockAddress[i] >= end_addr)		{			break;		}	}	// sectors erase command	address = (unsigned short *)ADDR_UNLOCK0;	*address = COM_UNLOCK0;	address = (unsigned short *)ADDR_UNLOCK1;	*address = COM_UNLOCK1;	address = (unsigned short *)ADDR_UNLOCK0;	*address = 0x0080;		*address = COM_UNLOCK0;	address = (unsigned short *)ADDR_UNLOCK1;	*address = COM_UNLOCK1;		for (i=0; i<era_no; i++)	{		address = (unsigned short *)era_addrs[i];		*address = 0x0030;	}		// /data polling	address = (unsigned short *)addr;	Data = (unsigned char)(*address);		while ((Data&0x80) != 0x80)				// DQ7 == 1 erase complete	{		if ((Data&0x20) == 0x20)			// DQ5 == 1 erase exceed timing limits		{			Data = (unsigned char)(*address);			if ((Data&0x80) == 0x80)			{				break;			}			else			{				return FAIL;			}		}		Data = (unsigned char)(*address);	}	Data = (unsigned char)(*address);	if (Data == 0xFF)	{		return COMPLETE;	}		else	{		return FAIL;	}}/******************************************************************** *Purpose    Read data into flash                              		* *Prototype  void ReadFlash(unsigned long addr, unsigned long size,	* *							unsigned short *buf) 			   		* *Parameters addr : starting address     	                 		* *           size : size of data read from flash in word 	 		* *           buf : buffer to store data read from flash 	 		* *Result     											      		* *Remarks                                                      		* ********************************************************************/void ReadFlash(unsigned long addr, unsigned long size, unsigned short *buf){	unsigned short *address;	unsigned short *tmp_buf = buf;	unsigned long i;	 	// read command	address = (unsigned short *)ADDR_UNLOCK0;	*address = COM_UNLOCK0;	address = (unsigned short *)ADDR_UNLOCK1;	*address = COM_UNLOCK1;	address = (unsigned short *)ADDR_UNLOCK0;	*address = 0x00F0;		// get data	address = (unsigned short *)addr;	for (i=0; i<size; i++)	{		*tmp_buf++ = *address++;	}	}	/**********************************************************************Purpose    Write data into flash                             		 **Prototype  short WriteFlash(unsigned long addr, unsigned long size, *							 unsigned short *buf)					 **Parameters addr : starting address		                      		 **           size : size of buffer write to flash in word 			 **           buf : data to write into flash     		         		 **Result     On success operation return 0, else return 1.      		 **Remarks                                                      		 ***********************************************************************/short WriteFlash(unsigned long addr, unsigned long size, unsigned short *buf){	unsigned short *address;	unsigned short *tmp_buf = buf;	unsigned char Data;	unsigned long i;	 	// set fast mode	address = (unsigned short *)ADDR_UNLOCK0;	*address = COM_UNLOCK0;	address = (unsigned short *)ADDR_UNLOCK1;	*address = COM_UNLOCK1;	address = (unsigned short *)ADDR_UNLOCK0;	*address = 0x0020;		// fast program	address = (unsigned short *)addr;	for (i=0; i<size; i++)	{		*address = 0x00A0;		*address = *tmp_buf;		Data = (unsigned char)(*address);			while (Data != (*tmp_buf))				// DQ7 == data erase complete		{			if ((Data&0x20) == 0x20)			// DQ5 == 1 erase exceed timing limits			{				Data = (unsigned char)(*address);				if (Data == (*tmp_buf))				{					break;				}				else				{					return FAIL;				}			}			Data = (unsigned char)(*address);		}		address++;		tmp_buf++;			}		// reset fast mode	address = (unsigned short *)FLASH_ROM;	*address = 0x0090;	*address = 0x00F0;	return COMPLETE;	}	short WriteFlashCode(unsigned long addr, unsigned short value){	unsigned short *address;	unsigned char Data;	 	// program command	address = (unsigned short *)ADDR_UNLOCK0;	*address = COM_UNLOCK0;	address = (unsigned short *)ADDR_UNLOCK1;	*address = COM_UNLOCK1;	address = (unsigned short *)ADDR_UNLOCK0;	*address = 0x00A0;		// write data	address = (unsigned short *)addr;	*address = value;	// /data polling	Data = (unsigned char)(*address);		while (Data != value)				// DQ7 == data erase complete	{		if ((Data&0x20) == 0x20)			// DQ5 == 1 erase exceed timing limits		{			Data = (unsigned char)(*address);			if (Data == value)			{				break;			}			else			{				return FAIL;			}		}		Data = (unsigned char)(*address);	}	return COMPLETE;}