2 * This file is part of the coreboot project.
4 * Copyright (C) 2007-2008 coresystems GmbH
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 #define DIMM_SOCKETS 2
25 #define DIMM_TCO_BASE 0x30
27 /* Burst length is always 8 */
31 u16 memory_frequency; /* 400, 533 or 667 */
32 u16 fsb_frequency; /* 400, 533 or 667 */
34 u8 trp; /* calculated by sdram_detect_smallest_tRP() */
35 u8 trcd; /* calculated by sdram_detect_smallest_tRCD() */
36 u8 tras; /* calculated by sdram_detect_smallest_tRAS() */
37 u8 trfc; /* calculated by sdram_detect_smallest_tRFC() */
38 u8 twr; /* calculated by sdram_detect_smallest_tWR() */
40 u8 cas; /* 3, 4 or 5 */
41 u8 refresh; /* 0 = 15.6us, 1 = 7.8us */
43 u8 dual_channel; /* 0 or 1 */
46 u8 mvco4x; /* 0 (8x) or 1 (4x) */
49 #define BOOT_PATH_NORMAL 0
50 #define BOOT_PATH_RESET 1
51 #define BOOT_PATH_RESUME 2
53 u8 package; /* 0 = planar, 1 = stacked */
54 #define SYSINFO_PACKAGE_PLANAR 0x00
55 #define SYSINFO_PACKAGE_STACKED 0x01
56 u8 dimm[2 * DIMM_SOCKETS];
57 #define SYSINFO_DIMM_X16DS 0x00
58 #define SYSINFO_DIMM_X8DS 0x01
59 #define SYSINFO_DIMM_X16SS 0x02
60 #define SYSINFO_DIMM_X8DDS 0x03
61 #define SYSINFO_DIMM_NOT_POPULATED 0x04
63 u8 banks[2 * DIMM_SOCKETS];
65 u8 banksize[2 * 2 * DIMM_SOCKETS];
67 } __attribute__ ((packed));
69 void receive_enable_adjust(struct sys_info *sysinfo);
70 void sdram_initialize(int boot_path);
71 unsigned long get_top_of_ram(void);
72 int fixup_i945_errata(void);
75 #endif /* RAMINIT_H */