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/*
* 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_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];
const u8 *spd_addresses;
} __attribute__ ((packed));
void receive_enable_adjust(struct sys_info *sysinfo);
void sdram_initialize(int boot_path, const u8 *sdram_addresses);
unsigned long get_top_of_ram(void);
int fixup_i945_errata(void);
void udelay(u32 us);
#if CONFIG_DEBUG_RAM_SETUP
void sdram_dump_mchbar_registers(void);
#endif
#endif /* RAMINIT_H */
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