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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_MEMCTL_H
#define FSL_DDR_MEMCTL_H
/*
* Pick a basic DDR Technology.
*/
#include <ddr_spd.h>
#define SDRAM_TYPE_DDR1 2
#define SDRAM_TYPE_DDR2 3
#define SDRAM_TYPE_LPDDR1 6
#define SDRAM_TYPE_DDR3 7
#if defined(CONFIG_FSL_DDR1)
#define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR (1)
typedef ddr1_spd_eeprom_t generic_spd_eeprom_t;
#ifndef CONFIG_FSL_SDRAM_TYPE
#define CONFIG_FSL_SDRAM_TYPE SDRAM_TYPE_DDR1
#endif
#elif defined(CONFIG_FSL_DDR2)
#define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR (3)
typedef ddr2_spd_eeprom_t generic_spd_eeprom_t;
#ifndef CONFIG_FSL_SDRAM_TYPE
#define CONFIG_FSL_SDRAM_TYPE SDRAM_TYPE_DDR2
#endif
#elif defined(CONFIG_FSL_DDR3)
#define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR (3) /* FIXME */
typedef ddr3_spd_eeprom_t generic_spd_eeprom_t;
#endif
/* Record of register values computed */
typedef struct fsl_ddr_cfg_regs_s {
struct {
unsigned int bnds;
unsigned int config;
unsigned int config_2;
} cs[CONFIG_CHIP_SELECTS_PER_CTRL];
unsigned int timing_cfg_3;
unsigned int timing_cfg_0;
unsigned int timing_cfg_1;
unsigned int timing_cfg_2;
unsigned int ddr_sdram_cfg;
unsigned int ddr_sdram_cfg_2;
unsigned int ddr_sdram_mode;
unsigned int ddr_sdram_mode_2;
unsigned int ddr_sdram_md_cntl;
unsigned int ddr_sdram_interval;
unsigned int ddr_data_init;
unsigned int ddr_sdram_clk_cntl;
unsigned int ddr_init_addr;
unsigned int ddr_init_ext_addr;
unsigned int timing_cfg_4;
unsigned int timing_cfg_5;
unsigned int ddr_zq_cntl;
unsigned int ddr_wrlvl_cntl;
unsigned int ddr_pd_cntl;
unsigned int ddr_sr_cntr;
unsigned int ddr_sdram_rcw_1;
unsigned int ddr_sdram_rcw_2;
} fsl_ddr_cfg_regs_t;
typedef struct memctl_options_partial_s {
unsigned int all_DIMMs_ECC_capable;
unsigned int all_DIMMs_tCKmax_ps;
unsigned int all_DIMMs_burst_lengths_bitmask;
unsigned int all_DIMMs_registered;
unsigned int all_DIMMs_unbuffered;
/* unsigned int lowest_common_SPD_caslat; */
unsigned int all_DIMMs_minimum_tRCD_ps;
} memctl_options_partial_t;
/*
* Generalized parameters for memory controller configuration,
* might be a little specific to the FSL memory controller
*/
typedef struct memctl_options_s {
/*
* Memory organization parameters
*
* if DIMM is present in the system
* where DIMMs are with respect to chip select
* where chip selects are with respect to memory boundaries
*/
unsigned int registered_dimm_en; /* use registered DIMM support */
/* Options local to a Chip Select */
struct cs_local_opts_s {
unsigned int auto_precharge;
unsigned int odt_rd_cfg;
unsigned int odt_wr_cfg;
} cs_local_opts[CONFIG_CHIP_SELECTS_PER_CTRL];
/* Special configurations for chip select */
unsigned int memctl_interleaving;
unsigned int memctl_interleaving_mode;
unsigned int ba_intlv_ctl;
/* Operational mode parameters */
unsigned int ECC_mode; /* Use ECC? */
/* Initialize ECC using memory controller? */
unsigned int ECC_init_using_memctl;
unsigned int DQS_config; /* Use DQS? maybe only with DDR2? */
/* SREN - self-refresh during sleep */
unsigned int self_refresh_in_sleep;
unsigned int dynamic_power; /* DYN_PWR */
/* memory data width to use (16-bit, 32-bit, 64-bit) */
unsigned int data_bus_width;
unsigned int burst_length; /* 4, 8 */
/* Global Timing Parameters */
unsigned int cas_latency_override;
unsigned int cas_latency_override_value;
unsigned int use_derated_caslat;
unsigned int additive_latency_override;
unsigned int additive_latency_override_value;
unsigned int clk_adjust; /* */
unsigned int cpo_override;
unsigned int write_data_delay; /* DQS adjust */
unsigned int half_strength_driver_enable;
unsigned int twoT_en;
unsigned int threeT_en;
unsigned int bstopre;
unsigned int tCKE_clock_pulse_width_ps; /* tCKE */
unsigned int tFAW_window_four_activates_ps; /* tFAW -- FOUR_ACT */
} memctl_options_t;
extern phys_size_t fsl_ddr_sdram(void);
#endif
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