new text document (2).txt

来自「飞思卡尔imx27 wince5.0 bootloader源代码」· 文本 代码 · 共 28 行

void DDR_64BIT_SYNC(void)
{
	int i;
	int rd_temp;
	
	*(volatile unsigned long *)(0xD8002060) = 0x00001000 ;

	for (i = 0; i<2500;i++ )
	{  
	}
	
	*(volatile unsigned long *)(0x10027828) = 0x55555555;
	*(volatile unsigned long *)(0x10027830) = 0x55555555;
	*(volatile unsigned long *)(0x10027834) = 0x55555555;
	*(volatile unsigned int * )(0x10027838) = 0x00005005;
	*(volatile unsigned long *)(0x1002783C) = 0x15555555;
	*(volatile unsigned long *)(0xD8001010) = 0x00000004; 
	*(volatile unsigned long *)(0xD8001004) = 0x006AD43A;
	*(volatile unsigned long *)(0xD8001000) = 0x92100000;
	rd_temp = *(volatile unsigned long *)(0xA0000F00);
	*(volatile unsigned long *)(0xD8001000) = 0xA2100000;
	rd_temp = *(volatile unsigned long *)(0xA0000F00);
	rd_temp = *(volatile unsigned long *)(0xA0000F00);
	*(volatile unsigned long *)(0xD8001000) = 0xB2100000;
	rd_temp = *(volatile unsigned char *)(0xA0000033);
	rd_temp = *(volatile unsigned long *)(0xA1000000);
	*(volatile unsigned long *)(0xD8001000) = 0x82224405;
}