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* This file is part of the coreboot project.
* Copyright (C) 2011 Alexandru Gagniuc <>
* 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
* GNU General Public License for more details.
#ifndef RAMINIT_VX900_H
#define RAMINIT_VX900_H
#include <device/dram/ddr3.h>
#include "vx900.h"
#define SPD_END_LIST 0xff
typedef struct dimm_layout_st
/* The address of the DIMM on the SMBUS *
* 0xFF to terminate the array*/
u8 spd_addr[VX900_MAX_DIMM_SLOTS + 1];
} dimm_layout;
typedef struct dimm_info_st
dimm_attr dimm[VX900_MAX_DIMM_SLOTS];
} dimm_info;
typedef struct mem_rank_st {
u16 start_addr;
u16 end_addr;
} mem_rank;
typedef struct rank_layout_st {
u32 phys_rank_size_mb[VX900_MAX_MEM_RANKS];
mem_rank virt[VX900_MAX_MEM_RANKS];
dimm_flags_t flags[VX900_MAX_MEM_RANKS];
} rank_layout;
typedef struct pci_reg8_st {
u8 addr;
u8 val;
} pci_reg8;
typedef u8 timing_dly[8];
typedef struct delay_range_st {
timing_dly low;
timing_dly avg;
timing_dly high;
} delay_range;
typedef struct vx900_delay_calib_st {
delay_range rx_dq_cr;
delay_range rx_dqs;
/* Transmit delays are calibrated for each dimm */
delay_range tx_dq[VX900_MAX_DIMM_SLOTS];
delay_range tx_dqs[VX900_MAX_DIMM_SLOTS];
} vx900_delay_calib;
typedef struct ramctr_timing_st {
enum spd_memory_type dram_type;
enum spd_dimm_type dimm_type;
u16 cas_supported;
/* tLatencies are in units of ns, scaled by x256 */
u32 tCK;
u32 tAA;
u32 tWR;
u32 tRCD;
u32 tRRD;
u32 tRP;
u32 tRAS;
u32 tRC;
u32 tRFC;
u32 tWTR;
u32 tRTP;
u32 tFAW;
/* Latencies in terms of clock cycles
* They are saved separately as they are needed for DRAM MRS commands*/
u8 CAS; /* CAS read latency */
u8 CWL; /* CAS write latency */
u8 WR; /* write recovery time */
/* Number of dimms currently connected */
u8 n_dimms;
} ramctr_timing;
void vx900_init_dram_ddr3(const dimm_layout *dimms);
#endif /* RAMINIT_VX900_H */