1 /* 2 * device board 3 * 4 * Copyright 2009 (C) Qi Hardware Inc., 5 * Author: Xiangfu Liu <xiangfu@sharism.cc> 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * version 3 as published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA 20 */ 21 #ifndef _CONFIGS_H 22 #define _CONFIGS_H 23 24 /* Here are these common definitions */ 25 /* Once your system configration change, just modify the file */ 26 27 #include "xburst_types.h" 28 29 #define CONFIG_NR_DRAM_BANKS 1 /* SDRAM BANK Number: 1, 2*/ 30 #define SDRAM_CASL 3 /* CAS latency: 2 or 3 */ 31 /* SDRAM Timings, unit: ns */ 32 #define SDRAM_TRAS 45 /* RAS# Active Time */ 33 #define SDRAM_RCD 20 /* RAS# to CAS# Delay */ 34 #define SDRAM_TPC 20 /* RAS# Precharge Time */ 35 #define SDRAM_TRWL 7 /* Write Latency Time */ 36 #define SDRAM_TREF 15625 /* Refresh period: 4096 refresh cycles/64ms */ 37 38 extern volatile u32 CPU_ID; 39 extern volatile u8 SDRAM_BW16; 40 extern volatile u8 SDRAM_BANK4; 41 extern volatile u8 SDRAM_ROW; 42 extern volatile u8 SDRAM_COL; 43 extern volatile u8 CONFIG_MOBILE_SDRAM; 44 extern volatile u32 CFG_CPU_SPEED; 45 extern volatile u8 PHM_DIV; 46 extern volatile u32 CFG_EXTAL; 47 extern volatile u32 CONFIG_BAUDRATE; 48 extern volatile u32 UART_BASE; 49 extern volatile u8 CONFIG_MOBILE_SDRAM; 50 extern volatile u8 IS_SHARE; 51 #endif