| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2007-2008 coresystems GmbH |
| * |
| * 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; version 2 of the License. |
| * |
| * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #ifndef RAMINIT_H |
| #define RAMINIT_H |
| |
| #define DIMM_SOCKETS 2 |
| |
| #define DIMM_SPD_BASE 0x50 |
| #define DIMM_TCO_BASE 0x30 |
| |
| /* Burst length is always 8 */ |
| #define BURSTLENGTH 8 |
| |
| struct sys_info { |
| u16 memory_frequency; /* 400, 533 or 667 */ |
| u16 fsb_frequency; /* 400, 533 or 667 */ |
| |
| u8 trp; /* calculated by sdram_detect_smallest_tRP() */ |
| u8 trcd; /* calculated by sdram_detect_smallest_tRCD() */ |
| u8 tras; /* calculated by sdram_detect_smallest_tRAS() */ |
| u8 trfc; /* calculated by sdram_detect_smallest_tRFC() */ |
| u8 twr; /* calculated by sdram_detect_smallest_tWR() */ |
| |
| u8 cas; /* 3, 4 or 5 */ |
| u8 refresh; /* 0 = 15.6us, 1 = 7.8us */ |
| |
| u8 dual_channel; /* 0 or 1 */ |
| u8 interleaved; |
| |
| u8 mvco4x; /* 0 (8x) or 1 (4x) */ |
| u8 clkcfg_bit7; |
| u8 boot_path; |
| #define BOOT_PATH_NORMAL 0 |
| #define BOOT_PATH_RESET 1 |
| #define BOOT_PATH_RESUME 2 |
| |
| u8 package; /* 0 = planar, 1 = stacked */ |
| #define SYSINFO_PACKAGE_PLANAR 0x00 |
| #define SYSINFO_PACKAGE_STACKED 0x01 |
| u8 dimm[2 * DIMM_SOCKETS]; |
| #define SYSINFO_DIMM_X16DS 0x00 |
| #define SYSINFO_DIMM_X8DS 0x01 |
| #define SYSINFO_DIMM_X16SS 0x02 |
| #define SYSINFO_DIMM_X8DDS 0x03 |
| #define SYSINFO_DIMM_NOT_POPULATED 0x04 |
| |
| u8 banks[2 * DIMM_SOCKETS]; |
| |
| u8 banksize[2 * 2 * DIMM_SOCKETS]; |
| |
| } __attribute__ ((packed)); |
| |
| void receive_enable_adjust(struct sys_info *sysinfo); |
| void sdram_initialize(int boot_path); |
| unsigned long get_top_of_ram(void); |
| int fixup_i945_errata(void); |
| void udelay(u32 us); |
| |
| #endif /* RAMINIT_H */ |