nor.c

基于东南大学开发的SEP3203的ARM7中的所有驱动

/* most of the info are from datasheet of Intel.Strata.Flash.28f640j3 
 * however, it`s incomplete and its language is obscure for beginners
 * so reading the fucking code is the best way to master it 
 */

#include "hardware.h"
#include "hardware_reg.h"
#include "HA_typedef.h"
#include <stdio.h>



void NorFlash(void)
{
	U32 temp;
	
	U32 i,j; 
	
  
	temp = NorFlash_unlock(0x20000000 );
	
	temp=NorFlash_bolckerase(0x20000000);
	
	
	
	
 #if 1
    for(i=0;i<0x10000;i++)
    {  
       
         temp = 0xAAAA0000 | i;
    	 temp = NorFlash_write( (0x20000000+(i*4)), temp );
    	
    	
    }
	
	printf("first block done!\n");
	#endif
	
   	
/////////////////////////////////////////////////////////////////   	
  	 #if 1
  	
  	 	for(i = 0; i<63; i++)
   	{
		temp = NorFlash_bolckerase(0x20040000 + i*0x40000 );
	
	}
  
   printf("erase block done!\n");

	 for(i=0;i<0x10000;i++)
    {    
        temp = 0xAAAA0000 | i;
    	temp = NorFlash_write( (0x20800000+(i*4)), temp );
    	
    	
    } 
    
  	printf("middle block done!\n");  
    
   	
	 for(i=0;i<0x10000;i++)
    {
        temp = 0xAAAA0000 | i;
    	temp = NorFlash_write( (0x20fc0000+(i*4)), temp );
    	
    	
    }
    
	
	printf("end block done!\n");
	#endif


    	 

	temp = NorFlash_Normal(0x20000000 );
	
	printf("done!\n");
	


	
}





void TestofNorFlash(U32 dest,U32 size)
{     
      U32 i;
      for(i=0;i<size/4;i++)
       if(*(RP)(dest+i*4) != (0xAAAA0000 | i))
           printf("%x\n",(dest+i*4));	
		
	
	printf("block %x test OK\n",(dest));	
   
}
//////////////////////////////////////////////////


ER NorFlash_clearSR(void)
{
	*(RP)0x0000000 = 0x500050;
	return 1;
}




ER NorFlash_idlejud(U32 address)
{
	U32 temp;
	
	*(RP)address = 0x700070;
	temp = *(RP)address;
	while( temp != 0x800080 )
	{
		temp = *(RP)address ;
	}
	return 1;
}
	
	
ER NorFlash_Normal(U32 address)
{
	U32 temp;
	*(RP)address = 0xff00ff;
	//temp = NorFlash_idlejud(address);
	return 1;
}





ER NorFlash_unlock( U32 address)
{
	U32 temp;
	
	*(RP)address = 0x600060;
	
	
	*(RP)address = 0xd000d0;
		
	temp = NorFlash_idlejud(address);
	return 1;
}



ER NorFlash_bolckerase(U32 blockadd)
{
	U32 temp;
	
	*(RP)blockadd = 0x200020;
	*(RP)blockadd = 0xd000d0;
	
	temp = NorFlash_idlejud(blockadd);
	
	temp = NorFlash_clearSR( );			       //Clear SR
	return 1;
}


ER NorFlash_read( U32 address)
{
	U32 temp;
	
	//*(RP16)address = 0xff;
	//*(RP)address = 0x200020;
	//*(RP)address = 0xd000d0;
	
	temp = NorFlash_idlejud(address);
	return 1;
}



ER NorFlash_write( U32 Pageadd, U32 data )
{
	U32 temp;
		
	*(RP)Pageadd = 0x400040;
	*(RP)Pageadd = data;
	
	temp = NorFlash_idlejud(Pageadd);
	return 1;
}