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#define MEMORY_BASE_ADDRESS  0x50000000
....
#define CONFIG_NR_DRAM_BANKS 1    /* we have 2 bank of DRAM *///rico 1016
#define PHYS_SDRAM_1  MEMORY_BASE_ADDRESS /* SDRAM Bank #1 */
#define PHYS_SDRAM_1_SIZE 0x10000000 /* 256MB *///rico  for DDR size
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#define DMC1_MEM_CFG  ((1<<30)+(0<<21)+(0<<18)+(2<<15)+(0<<14)+(0<<13)+(0<<7)+(0<<6)+(3<<3)+(2<<0))
#define DMC1_MEM_CFG2  ((1<<11)+(3<<8)+(1<<6)+(0<<4)+(0<<2)+(1<<0))
#define DMC1_CHIP0_CFG  ((1<<16)+(0x50<<8)+(0xF0<<0))
#define DMC_DDR_32_CFG  0x0  
       DDRµÄʱÐò²ÎÊýÕÕ¹æ¸ñÊéÈ·Èϼ´¿É¡£´Ë´¦ËµÃ÷µÄÊÇDDR³õʼ»¯Ê±ÒªÐ´ÈëDDR¿ØÖÆÆ÷µÄ¼¸¸ö¼Ä´æÆ÷²ÎÊý£¬°üÀ¨Î»¿í£¬Æ¬Ñ¡ÒªÇóµÈµÈ¡£ÎÒ֮ǰµ¼ÖÂËÀ»úµÄ´íÎóÔÚÓÚÆ¬Ñ¡ÓдíÎó£¬ËùÒԸijÉ256Mºóµ¼ÖÂÒ³ÃæµØÖ·Ñ°Ö·´íÎó¡£
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#ifdef CONFIG_SMDK6410_RAMSIZE_256M
#define PHYS_SIZE       (256 * 1024 * 1024)
#else
#define PHYS_SIZE       (128 * 1024 * 1024)


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