sdram_.h

对于DSP C6000系列视频处理开发中,SDRAM于对视频编码数据的存储,此代码为SDRAM的驱动程序

//typedef unsigned int u32;
//*(volatile unsigned int*)0x1d

#define GBLCTL  *( volatile u32 *)0x01800000 //0x01A80000 GBLCTL EMIFx Global Control
#define CE1CTL  *( volatile u32 *)0x01800004// 0x01A80004 CE1CTL EMIFx CE1 Space Control
#define CE0CTL  *( volatile u32 *)0x01800008// 0x01A80008 CE0CTL EMIFx CE0 Space Control
//#define GBLCTL  *//0x0180000C 0x01A8000C Reserved
#define CE2CTL  *( volatile u32 *)0x01800010// 0x01A80010 CE2CTL EMIFx CE2 Space Control
#define CE3CTL  *( volatile u32 *)0x01800014// 0x01A80014 CE3CTL EMIFx CE3 Space Control
#define SDCTL  	*( volatile u32 *)0x01800018// 0x01A80018 SDCTL EMIFx SDRAM Control
#define SDTIM  	*( volatile u32 *)0x0180001C// 0x01A8001C SDTIM EMIFx SDRAM Refresh Period
#define SDEXT  	*( volatile u32 *)0x01800020//? 0x01A80020? SDEXT EMIFx SDRAM extension?
#define CE1SEC  *( volatile u32 *)0x01800044// 0x01A80044 CE1SEC EMIFx CE1 Space Secondary Control
#define CE0SEC  *( volatile u32 *)0x01800048// 0x01A80048 CE0SEC EMIFx CE0 Space Secondary Control
//#define GBLCTL  *//0x0180004C 0x01A8004C Reserved
#define CE2SEC  *( volatile u32 *)0x01800050// 0x01A80050 CE2SEC EMIFx CE2 Space Secondary Control
#define CE3SEC  *( volatile u32 *)0x01800054// 0x01A80054 CE3SEC EMIFx CE3 Space Secondary Control


#define INITMASK 0X01000000



 #define  MEMORYBLOCKNUMMAX 	0X0408
 #define  BLOCKSIZE  			0X10000
 #define  MEMORYBASEADDRESS  	0X80000000
 #define  ERRCOUNTMAX  			0X10 
 //int MemoryBlock[MEMORYBLOCKNUMMAX]; 
 //int MemoryBlockNum;
 /*
  typedef struct 
	{ u32 id;
	  void  *point;
	  void 	*end;
	  u32  length;
	  u32  	time;
	}MemoryStruct;
	
 #define MEMORYNUMMAX  	0X200
 
	
 MemoryStruct memory[MEMORYNUMMAX];// 0X200 ;    //指向结构的指针         
	*/
 void MemoryBlockCheck();
 void Refresh() ;
 // #define  MEMORY_DEBUG
 void MemTest();