dram.h

三星s3c2460开发板完整功能测试代码

//************************************************ 
// NAME    : DRAM.h
// DESC	   : library functions
// History : 2004. 6 .3  ver 0.0 
//************************************************

#ifndef __DRAM_h__
#define __DRAM_h__

#ifdef __cplusplus
extern "C" {
#endif

#include "2460addr.h"
#include "Option.h"


#if		defined(PORT1_SDRAM_D)||defined(PORT1_DDR)

#define	SetP1REFRESH( REFCYC)	rP1REFRESH_DDR	=	(unsigned)(REFCYC);
#define	SetP1PARAMETER( TRAS, TRC, TRCD, TRP)							\
{																		\
	rP1BANKCFG_DDR	=	(rP1BANKCFG_DDR&~(0xfff00))|					\
						((unsigned)(TRAS)<<16)|((unsigned)(TRC)<<12)|	\
						((unsigned)(TRCD)<<10)|((unsigned)(TRP)<<8);	\
}

#elif	defined(PORT1_SDRAM_L)||defined(PORT1_L2RAM)

#define	SetP1REFRESH( REFCYC)	rP1REFRESH_L2RAM=	(unsigned)(REFCYC);
#define	SetP1PARAMETER( TRAS, TRC, TRCD, TRP)							\
{																		\
	rP1BANKCFG_L2RAM=	(rP1BANKCFG_L2RAM&~(0xfff0000))|				\
						((unsigned)(TRAS)<<24)|((unsigned)(TRC)<<20)|	\
						((unsigned)(TRCD)<<18)|((unsigned)(TRP)<<16);	\
}

#else

#define	SetP1REFRESH( REFCYC)
#define	SetP1PARAMETER( TRAS, TRC, TRCD, TRP)

#endif


#if		defined(PORT2_SDRAM_D)||defined(PORT2_DDR)

#define	SetP2REFRESH( REFCYC)	rP2REFRESH_DDR	=	(unsigned)(REFCYC);
#define	SetP2PARAMETER( TRAS, TRC, TRCD, TRP)							\
{																		\
	rP2BANKCFG_DDR	=	(rP2BANKCFG_DDR&~(0xfff00))|					\
						((unsigned)(TRAS)<<16)|((unsigned)(TRC)<<12)|	\
						((unsigned)(TRCD)<<10)|((unsigned)(TRP)<<8);	\
}

#elif	defined(PORT2_SDRAM_L)||defined(PORT2_L2RAM)

#define	SetP2REFRESH( REFCYC)	rP2REFRESH_L2RAM=	(unsigned)(REFCYC);
#define	SetP2PARAMETER( TRAS, TRC, TRCD, TRP)							\
{																		\
	rP2BANKCFG_L2RAM=	(rP2BANKCFG_L2RAM&~(0xfff0000))|				\
						((unsigned)(TRAS)<<24)|((unsigned)(TRC)<<20)|	\
						((unsigned)(TRCD)<<18)|((unsigned)(TRP)<<16);	\
}

#else

#define	SetP2REFRESH( REFCYC)
#define	SetP2PARAMETER( TRAS, TRC, TRCD, TRP)

#endif

void PreChangeSDRAMParameter(void);
void ChangeSDRAMParameter(unsigned int);

#ifdef __cplusplus
}
#endif

#endif  //__DRAM_h__