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/*
* Copyright 2012 GE Intelligent Platforms, Inc.
* Copyright 2008-2011 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
#include <ddr_spd.h>
/* Basic DDR Technology. */
#define SDRAM_TYPE_DDR1 2
#define SDRAM_TYPE_DDR2 3
#define SDRAM_TYPE_LPDDR1 6
#define SDRAM_TYPE_DDR3 7
#define DDR_BL4 4
#define DDR_BL8 8
#define DDR2_RTT_OFF 0
#define DDR2_RTT_75_OHM 1
#define DDR2_RTT_150_OHM 2
#define DDR2_RTT_50_OHM 3
#if defined(CONFIG_FSL_DDR2)
#define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR (3)
typedef struct ddr2_spd_eeprom_s generic_spd_eeprom_t;
#define FSL_SDRAM_TYPE SDRAM_TYPE_DDR2
#endif
#define FSL_DDR_ODT_NEVER 0x0
#define FSL_DDR_ODT_CS 0x1
#define FSL_DDR_ODT_ALL_OTHER_CS 0x2
#define FSL_DDR_ODT_OTHER_DIMM 0x3
#define FSL_DDR_ODT_ALL 0x4
#define FSL_DDR_ODT_SAME_DIMM 0x5
#define FSL_DDR_ODT_CS_AND_OTHER_DIMM 0x6
#define FSL_DDR_ODT_OTHER_CS_ONSAMEDIMM 0x7
#define SDRAM_CS_CONFIG_EN 0x80000000
/* DDR_SDRAM_CFG - DDR SDRAM Control Configuration */
#define SDRAM_CFG_MEM_EN 0x80000000
#define SDRAM_CFG_SREN 0x40000000
#define SDRAM_CFG_ECC_EN 0x20000000
#define SDRAM_CFG_RD_EN 0x10000000
#define SDRAM_CFG_SDRAM_TYPE_DDR1 0x02000000
#define SDRAM_CFG_SDRAM_TYPE_DDR2 0x03000000
#define SDRAM_CFG_SDRAM_TYPE_MASK 0x07000000
#define SDRAM_CFG_SDRAM_TYPE_SHIFT 24
#define SDRAM_CFG_DYN_PWR 0x00200000
#define SDRAM_CFG_32_BE 0x00080000
#define SDRAM_CFG_16_BE 0x00100000
#define SDRAM_CFG_8_BE 0x00040000
#define SDRAM_CFG_NCAP 0x00020000
#define SDRAM_CFG_2T_EN 0x00008000
#define SDRAM_CFG_BI 0x00000001
#define SDRAM_CFG2_D_INIT 0x00000010
#define SDRAM_CFG2_ODT_CFG_MASK 0x00600000
#define SDRAM_CFG2_ODT_NEVER 0
#define SDRAM_CFG2_ODT_ONLY_WRITE 1
#define SDRAM_CFG2_ODT_ONLY_READ 2
#define SDRAM_CFG2_ODT_ALWAYS 3
#define MAX_CHIP_SELECTS_PER_CTRL 4
#define MAX_DIMM_SLOTS_PER_CTLR 4
/*
* Memory controller characteristics and I2C parameters to
* read the SPD data.
*/
struct ddr_board_info_s {
uint32_t fsl_ddr_ver;
void __iomem *ddr_base;
uint32_t cs_per_ctrl;
uint32_t dimm_slots_per_ctrl;
uint32_t i2c_bus;
uint32_t i2c_slave;
uint32_t i2c_speed;
void __iomem *i2c_base;
uint8_t *spd_i2c_addr;
};
/*
* Generalized parameters for memory controller configuration,
* might be a little specific to the FSL memory controller
*/
struct memctl_options_s {
struct ddr_board_info_s *board_info;
uint32_t sdram_type;
/*
* 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
*/
uint32_t registered_dimm_en;
/* Options local to a Chip Select */
struct cs_local_opts_s {
uint32_t auto_precharge;
uint32_t odt_rd_cfg;
uint32_t odt_wr_cfg;
uint32_t odt_rtt_norm;
uint32_t odt_rtt_wr;
} cs_local_opts[MAX_CHIP_SELECTS_PER_CTRL];
/* DLL reset disable */
uint32_t dll_rst_dis;
/* Operational mode parameters */
uint32_t ECC_mode;
uint32_t ECC_init_using_memctl;
uint32_t data_init;
/* Use DQS? maybe only with DDR2? */
uint32_t DQS_config;
uint32_t self_refresh_in_sleep;
uint32_t dynamic_power;
uint32_t data_bus_width;
uint32_t burst_length;
/* Global Timing Parameters */
uint32_t cas_latency_override;
uint32_t cas_latency_override_value;
uint32_t use_derated_caslat;
uint32_t additive_latency_override;
uint32_t additive_latency_override_value;
uint32_t clk_adjust;
uint32_t cpo_override;
uint32_t write_data_delay;
uint32_t half_strength_driver_enable;
uint32_t twoT_en;
uint32_t bstopre;
uint32_t tCKE_clock_pulse_width_ps;
uint32_t tFAW_window_four_activates_ps;
/* Rtt impedance */
uint32_t rtt_override;
uint32_t rtt_override_value;
/* Automatic self refresh */
uint32_t auto_self_refresh_en;
/* read-to-write turnaround */
uint32_t trwt_override;
uint32_t trwt;
/* Powerdon timings. */
uint32_t txp;
uint32_t taxpd;
uint32_t txard;
/* Load mode cycle time */
uint32_t tmrd;
};
extern phys_size_t fsl_ddr_sdram(void);
extern phys_size_t fixed_sdram(void);
#endif
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