CONFIG_SYS_CSn_MASK -- defines the Chip Select Mask register
CONFIG_SYS_CSn_CTRL -- defines the Chip Select Control register
-CONFIG_SYS_SDRAM_BASE -- defines the DRAM Base
+CFG_SYS_SDRAM_BASE -- defines the DRAM Base
2. MEMORY MAP UNDER U-BOOT AND LINUX KERNEL
===========================================