#include "..\inc\board.h"#include "..\inc\bios.h"  #include "..\inc\flash.h"unsigned long flash_base;unsigned short mfr_id;unsigned short dev_id;void send_cmd(unsigned long addr,unsigned char cmd){    *(unsigned short *)(addr*2)=cmd;} void send_unlock()   {	*(unsigned short *)((ROM_BASE+0x5555)*2) =0xAA;	*(unsigned short *)((ROM_BASE+0x2AAA)*2) =0x55;} int probe_chip(){	int i;	/* Enter autoselect mode. */	send_unlock();	send_cmd(ROM_BASE+0x5555, 0x90);	mfr_id =*(unsigned short *)(ROM_BASE+0x0*2);	dev_id =*(unsigned short *)(ROM_BASE+0x1*2);		send_cmd(ROM_BASE, 0xf0);	return 0;}int flash_is_busy(unsigned long addr1){    unsigned short d1,d2;	d1=*(unsigned short*)(addr1*2) & D6_MASK;	d2=*(unsigned short*)(addr1*2) & D6_MASK;	return(d1!=d2);//    return((*(unsigned short*)addr1 & D7_MASK)==0);}int flash_erase(){    int times_left,ret;	send_unlock();	send_cmd(ROM_BASE+0x5555, 0x80);	send_unlock();	send_cmd(ROM_BASE+0x5555, 0x10);		delay(20);	times_left = 0x500000;	while (times_left-- && flash_is_busy(0));	if (!times_left)	{		ret = -1;	}	send_cmd(ROM_BASE, 0xf0);	return ret;}int flash_read(unsigned long from,unsigned long len,unsigned short *buf){	int i;	unsigned short buff[100];	for(i=0;i<100;i++)	  buff[i]=*(unsigned short *)i*2;		return 0;}int write_one_word(unsigned long addr, unsigned short dat){	int times_left;	int ret = 0;	send_unlock();	send_cmd(ROM_BASE+0x5555, 0xA0);		*(unsigned short *)(ROM_BASE+addr)= dat;		delay(20);	times_left = 200000;	while (times_left-- && flash_is_busy(ROM_BASE+addr));	if (!times_left)	{		ret = -1;	}	return ret;} int flash_write(unsigned long to,unsigned long len,unsigned short *buf){    int n;    unsigned short dat,*buff;         to=0;    len=0x2000;    buff=(unsigned short *)0x0c000000;    	for (n =0; n <len;n++)	{	  dat=buff[n];	  write_one_word(n<<1,dat);    }          	return 0;}int flash_init(){	int i;	unsigned short buf[100];	probe_chip();    if(flash_erase()==0)    {    }        flash_write(0,0x100,buf);	return 0;}