| /* |
| * (C) Copyright 2006 |
| * Stefan Roese, DENX Software Engineering, sr@denx.de. |
| * |
| * (C) Copyright 2006 |
| * DAVE Srl <www.dave-tech.it> |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| #ifndef _SDRAM_H_ |
| #define _SDRAM_H_ |
| |
| #include <config.h> |
| |
| #define ONE_BILLION 1000000000 |
| |
| struct sdram_conf_s { |
| unsigned long size; |
| int rows; |
| unsigned long reg; |
| }; |
| |
| typedef struct sdram_conf_s sdram_conf_t; |
| |
| /* Bitfields offsets */ |
| #define SDRAM0_TR_CASL (31 - 8) |
| #define SDRAM0_TR_PTA (31 - 13) |
| #define SDRAM0_TR_CTP (31 - 15) |
| #define SDRAM0_TR_LDF (31 - 17) |
| #define SDRAM0_TR_RFTA (31 - 29) |
| #define SDRAM0_TR_RCD (31 - 31) |
| |
| #ifdef CONFIG_SYS_SDRAM_CL |
| /* SDRAM timings [ns] according to AMCC/IBM names (see SDRAM_faq.doc) */ |
| #define CONFIG_SYS_SDRAM_CASL CONFIG_SYS_SDRAM_CL |
| #define CONFIG_SYS_SDRAM_PTA CONFIG_SYS_SDRAM_tRP |
| #define CONFIG_SYS_SDRAM_CTP (CONFIG_SYS_SDRAM_tRC - CONFIG_SYS_SDRAM_tRCD - CONFIG_SYS_SDRAM_tRP) |
| #define CONFIG_SYS_SDRAM_LDF 0 |
| #ifdef CONFIG_SYS_SDRAM_tRFC |
| #define CONFIG_SYS_SDRAM_RFTA CONFIG_SYS_SDRAM_tRFC |
| #else |
| #define CONFIG_SYS_SDRAM_RFTA CONFIG_SYS_SDRAM_tRC |
| #endif |
| #define CONFIG_SYS_SDRAM_RCD CONFIG_SYS_SDRAM_tRCD |
| #endif /* #ifdef CONFIG_SYS_SDRAM_CL */ |
| |
| /* |
| * Some defines for the 440 DDR controller |
| */ |
| #define SDRAM_CFG0_DC_EN 0x80000000 /* SDRAM Controller Enable */ |
| #define SDRAM_CFG0_MEMCHK 0x30000000 /* Memory data error checking mask*/ |
| #define SDRAM_CFG0_MEMCHK_NON 0x00000000 /* No ECC generation */ |
| #define SDRAM_CFG0_MEMCHK_GEN 0x20000000 /* ECC generation */ |
| #define SDRAM_CFG0_MEMCHK_CHK 0x30000000 /* ECC generation and checking */ |
| #define SDRAM_CFG0_DRAMWDTH 0x02000000 /* DRAM width mask */ |
| #define SDRAM_CFG0_DRAMWDTH_32 0x00000000 /* 32 bits */ |
| #define SDRAM_CFG0_DRAMWDTH_64 0x02000000 /* 64 bits */ |
| |
| #endif |
