init_sdram.c

Linux环境下的S3C2410中NandFlash基本操作编程

/*
初始化SDRAM_Controller 的子函数
*/

/*SDRAM的控制寄存器的基址*/
#define	SDRAM_CTR_base_add	0x48000000

/*SDRAM的控制寄存器的初始化设置值数组*/
unsigned long  const	SDRAM_CTR_cfg_val[]={0x22111110,		//BWSCON
									0x00000700,		//BANKCON0
									0x00000700,		//BANKCON1
									0x00000700,		//BANKCON2
									0x00000700,		//BANKCON3	
									0x00000700,		//BANKCON4
									0x00000700,		//BANKCON5
									0x00018005,		//BANKCON6
									0x00018005,		//BANKCON7
									0x008e07a3,		//REFRESH
									0x000000b2,		//BANKSIZE
									0x00000030,		//MRSRB6
									0x00000030,		//MRSRB7
							   	    };

void	init_SDRAM(){
		int 	i = 0;
		unsigned long *p = (unsigned long *)SDRAM_CTR_base_add;
		for(; i < 13; i++)
		p[i] = SDRAM_CTR_cfg_val[i];
}