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/*
* Copyright 2008 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* Version 2 as published by the Free Software Foundation.
*/
#ifndef FSL_DDR_MAIN_H
#define FSL_DDR_MAIN_H
#include <asm/fsl_ddr_sdram.h>
#include "ddr1_2_dimm_params.h"
#include "common_timing_params.h"
/*
* Bind the main DDR setup driver's generic names
* to this specific DDR technology.
*/
static __inline__ int
compute_dimm_parameters(const generic_spd_eeprom_t *spd,
dimm_params_t *pdimm,
unsigned int dimm_number)
{
return ddr_compute_dimm_parameters(spd, pdimm, dimm_number);
}
/*
* Data Structures
*
* All data structures have to be on the stack
*/
#define CFG_NUM_DDR_CTLRS CONFIG_NUM_DDR_CONTROLLERS
#define CFG_DIMM_SLOTS_PER_CTLR CONFIG_DIMM_SLOTS_PER_CTLR
typedef struct {
generic_spd_eeprom_t
spd_installed_dimms[CFG_NUM_DDR_CTLRS][CFG_DIMM_SLOTS_PER_CTLR];
struct dimm_params_s
dimm_params[CFG_NUM_DDR_CTLRS][CFG_DIMM_SLOTS_PER_CTLR];
memctl_options_t memctl_opts[CFG_NUM_DDR_CTLRS];
common_timing_params_t common_timing_params[CFG_NUM_DDR_CTLRS];
fsl_ddr_cfg_regs_t fsl_ddr_config_reg[CFG_NUM_DDR_CTLRS];
} fsl_ddr_info_t;
/* Compute steps */
#define STEP_GET_SPD (1 << 0)
#define STEP_COMPUTE_DIMM_PARMS (1 << 1)
#define STEP_COMPUTE_COMMON_PARMS (1 << 2)
#define STEP_GATHER_OPTS (1 << 3)
#define STEP_ASSIGN_ADDRESSES (1 << 4)
#define STEP_COMPUTE_REGS (1 << 5)
#define STEP_PROGRAM_REGS (1 << 6)
#define STEP_ALL 0xFFF
extern phys_size_t
fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step);
extern const char * step_to_string(unsigned int step);
extern unsigned int
compute_fsl_memctl_config_regs(const memctl_options_t *popts,
fsl_ddr_cfg_regs_t *ddr,
const common_timing_params_t *common_dimm,
const dimm_params_t *dimm_parameters,
unsigned int dbw_capacity_adjust);
extern unsigned int
compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params,
common_timing_params_t *outpdimm,
unsigned int number_of_dimms);
extern unsigned int populate_memctl_options(int all_DIMMs_registered,
memctl_options_t *popts,
unsigned int ctrl_num);
extern unsigned int mclk_to_picos(unsigned int mclk);
extern unsigned int get_memory_clk_period_ps(void);
extern unsigned int picos_to_mclk(unsigned int picos);
#endif