/*

   * 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
  
  /*
   * 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

  #define DDR_BL4		4	/* burst length 4 */
  #define DDR_BC4		DDR_BL4	/* burst chop for ddr3 */
  #define DDR_OTF		6	/* on-the-fly BC4 and BL8 */
  #define DDR_BL8		8	/* burst length 8 */

  #define DDR3_RTT_OFF		0

  #define DDR3_RTT_60_OHM		1 /* RTT_Nom = RZQ/4 */
  #define DDR3_RTT_120_OHM	2 /* RTT_Nom = RZQ/2 */
  #define DDR3_RTT_40_OHM		3 /* RTT_Nom = RZQ/6 */
  #define DDR3_RTT_20_OHM		4 /* RTT_Nom = RZQ/12 */
  #define DDR3_RTT_30_OHM		5 /* RTT_Nom = RZQ/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_SYS_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_SYS_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_SYS_FSL_DDR3)

  #define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR	(3)	/* FIXME */
  typedef ddr3_spd_eeprom_t generic_spd_eeprom_t;

  #ifndef CONFIG_FSL_SDRAM_TYPE
  #define CONFIG_FSL_SDRAM_TYPE	SDRAM_TYPE_DDR3

  #endif

  #endif	/* #if defined(CONFIG_SYS_FSL_DDR1) */

  #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 bank(chip select) interleaving mode */
  #define FSL_DDR_CS0_CS1			0x40
  #define FSL_DDR_CS2_CS3			0x20
  #define FSL_DDR_CS0_CS1_AND_CS2_CS3	(FSL_DDR_CS0_CS1 | FSL_DDR_CS2_CS3)
  #define FSL_DDR_CS0_CS1_CS2_CS3		(FSL_DDR_CS0_CS1_AND_CS2_CS3 | 0x04)
  
  /* define memory controller interleaving mode */
  #define FSL_DDR_CACHE_LINE_INTERLEAVING	0x0
  #define FSL_DDR_PAGE_INTERLEAVING	0x1
  #define FSL_DDR_BANK_INTERLEAVING	0x2
  #define FSL_DDR_SUPERBANK_INTERLEAVING	0x3

  #define FSL_DDR_256B_INTERLEAVING	0x8

  #define FSL_DDR_3WAY_1KB_INTERLEAVING	0xA
  #define FSL_DDR_3WAY_4KB_INTERLEAVING	0xC
  #define FSL_DDR_3WAY_8KB_INTERLEAVING	0xD
  /* placeholder for 4-way interleaving */
  #define FSL_DDR_4WAY_1KB_INTERLEAVING	0x1A
  #define FSL_DDR_4WAY_4KB_INTERLEAVING	0x1C
  #define FSL_DDR_4WAY_8KB_INTERLEAVING	0x1D

  #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_DBW_MASK		0x00180000

  #define SDRAM_CFG_DBW_SHIFT		19

  #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 TIMING_CFG_2_CPO_MASK	0x0F800000

  #if defined(CONFIG_P4080)
  #define RD_TO_PRE_MASK		0xf
  #define RD_TO_PRE_SHIFT		13
  #define WR_DATA_DELAY_MASK	0xf
  #define WR_DATA_DELAY_SHIFT	9
  #else
  #define RD_TO_PRE_MASK		0x7
  #define RD_TO_PRE_SHIFT		13
  #define WR_DATA_DELAY_MASK	0x7
  #define WR_DATA_DELAY_SHIFT	10
  #endif

  /* DDR_MD_CNTL */
  #define MD_CNTL_MD_EN		0x80000000
  #define MD_CNTL_CS_SEL_CS0	0x00000000
  #define MD_CNTL_CS_SEL_CS1	0x10000000
  #define MD_CNTL_CS_SEL_CS2	0x20000000
  #define MD_CNTL_CS_SEL_CS3	0x30000000
  #define MD_CNTL_CS_SEL_CS0_CS1	0x40000000
  #define MD_CNTL_CS_SEL_CS2_CS3	0x50000000
  #define MD_CNTL_MD_SEL_MR	0x00000000
  #define MD_CNTL_MD_SEL_EMR	0x01000000
  #define MD_CNTL_MD_SEL_EMR2	0x02000000
  #define MD_CNTL_MD_SEL_EMR3	0x03000000
  #define MD_CNTL_SET_REF		0x00800000
  #define MD_CNTL_SET_PRE		0x00400000
  #define MD_CNTL_CKE_CNTL_LOW	0x00100000
  #define MD_CNTL_CKE_CNTL_HIGH	0x00200000
  #define MD_CNTL_WRCW		0x00080000
  #define MD_CNTL_MD_VALUE(x)	(x & 0x0000FFFF)

  /* DDR_CDR1 */
  #define DDR_CDR1_DHC_EN	0x80000000

  #define DDR_CDR1_ODT_SHIFT	17
  #define DDR_CDR1_ODT_MASK	0x6
  #define DDR_CDR2_ODT_MASK	0x1
  #define DDR_CDR1_ODT(x) ((x & DDR_CDR1_ODT_MASK) << DDR_CDR1_ODT_SHIFT)
  #define DDR_CDR2_ODT(x) (x & DDR_CDR2_ODT_MASK)
  
  #if (defined(CONFIG_SYS_FSL_DDR_VER) && \
  	(CONFIG_SYS_FSL_DDR_VER >= FSL_DDR_VER_4_7))
  #define DDR_CDR_ODT_OFF		0x0
  #define DDR_CDR_ODT_120ohm	0x1
  #define DDR_CDR_ODT_180ohm	0x2
  #define DDR_CDR_ODT_75ohm	0x3
  #define DDR_CDR_ODT_110ohm	0x4
  #define DDR_CDR_ODT_60hm	0x5
  #define DDR_CDR_ODT_70ohm	0x6
  #define DDR_CDR_ODT_47ohm	0x7
  #else
  #define DDR_CDR_ODT_75ohm	0x0
  #define DDR_CDR_ODT_55ohm	0x1
  #define DDR_CDR_ODT_60ohm	0x2
  #define DDR_CDR_ODT_50ohm	0x3
  #define DDR_CDR_ODT_150ohm	0x4
  #define DDR_CDR_ODT_43ohm	0x5
  #define DDR_CDR_ODT_120ohm	0x6
  #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_mode_3;
  	unsigned int ddr_sdram_mode_4;
  	unsigned int ddr_sdram_mode_5;
  	unsigned int ddr_sdram_mode_6;
  	unsigned int ddr_sdram_mode_7;
  	unsigned int ddr_sdram_mode_8;

  	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_wrlvl_cntl_2;
  	unsigned int ddr_wrlvl_cntl_3;

  	unsigned int ddr_sr_cntr;
  	unsigned int ddr_sdram_rcw_1;
  	unsigned int ddr_sdram_rcw_2;

  	unsigned int ddr_eor;

  	unsigned int ddr_cdr1;
  	unsigned int ddr_cdr2;
  	unsigned int err_disable;
  	unsigned int err_int_en;
  	unsigned int debug[32];

  } 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;

  #define DDR_DATA_BUS_WIDTH_64 0
  #define DDR_DATA_BUS_WIDTH_32 1
  #define DDR_DATA_BUS_WIDTH_16 2

  /*
   * 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;

  		unsigned int odt_rtt_norm;
  		unsigned int odt_rtt_wr;

  	} 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;

  	unsigned int addr_hash;

  
  	/* 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;	/* BL4, OTF and BL8 */
  	/* On-The-Fly Burst Chop enable */

  	unsigned int otf_burst_chop_en;

  	/* mirrior DIMMs for DDR3 */
  	unsigned int mirrored_dimm;

  	unsigned int quad_rank_present;

  	unsigned int ap_en;	/* address parity enable for RDIMM */

  	unsigned int x4_en;	/* enable x4 devices */

  
  	/* 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 wrlvl_override;
  	unsigned int wrlvl_sample;		/* Write leveling */
  	unsigned int wrlvl_start;

  	unsigned int wrlvl_ctl_2;
  	unsigned int wrlvl_ctl_3;

  	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 */

  	/* Rtt impedance */
  	unsigned int rtt_override;		/* rtt_override enable */
  	unsigned int rtt_override_value;	/* that is Rtt_Nom for DDR3 */

  	unsigned int rtt_wr_override_value;	/* this is Rtt_WR for DDR3 */

  	/* Automatic self refresh */
  	unsigned int auto_self_refresh_en;
  	unsigned int sr_it;

  	/* ZQ calibration */
  	unsigned int zq_en;
  	/* Write leveling */
  	unsigned int wrlvl_en;

  	/* RCW override for RDIMM */
  	unsigned int rcw_override;
  	unsigned int rcw_1;
  	unsigned int rcw_2;
  	/* control register 1 */
  	unsigned int ddr_cdr1;

  	unsigned int ddr_cdr2;

  
  	unsigned int trwt_override;
  	unsigned int trwt;			/* read-to-write turnaround */

  } memctl_options_t;
  
  extern phys_size_t fsl_ddr_sdram(void);

  extern phys_size_t fsl_ddr_sdram_size(void);

  extern int fsl_use_spd(void);

  extern void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,

  					unsigned int ctrl_num, int step);

  u32 fsl_ddr_get_intl3r(void);

  static void __board_assert_mem_reset(void)
  {
  }
  
  static void __board_deassert_mem_reset(void)
  {
  }
  
  void board_assert_mem_reset(void)
  	__attribute__((weak, alias("__board_assert_mem_reset")));
  
  void board_deassert_mem_reset(void)
  	__attribute__((weak, alias("__board_deassert_mem_reset")));
  
  static int __board_need_mem_reset(void)
  {
  	return 0;
  }
  
  int board_need_mem_reset(void)
  	__attribute__((weak, alias("__board_need_mem_reset")));

  /*
   * The 85xx boards have a common prototype for fixed_sdram so put the
   * declaration here.
   */
  #ifdef CONFIG_MPC85xx
  extern phys_size_t fixed_sdram(void);
  #endif
  
  #if defined(CONFIG_DDR_ECC)
  extern void ddr_enable_ecc(unsigned int dram_size);
  #endif

  typedef struct fixed_ddr_parm{
  	int min_freq;
  	int max_freq;
  	fsl_ddr_cfg_regs_t *ddr_settings;
  } fixed_ddr_parm_t;

  #endif