arch/powerpc/include/asm/fsl_ddr_sdram.h

   1 /*
   2  * Copyright 2008-2011 Freescale Semiconductor, Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * Version 2 as published by the Free Software Foundation.
   7  */
   8
   9 #ifndef FSL_DDR_MEMCTL_H
  10 #define FSL_DDR_MEMCTL_H
  11
  12 /*
  13  * Pick a basic DDR Technology.
  14  */
  15 #include <ddr_spd.h>
  16
  17 #define SDRAM_TYPE_DDR1    2
  18 #define SDRAM_TYPE_DDR2    3
  19 #define SDRAM_TYPE_LPDDR1  6
  20 #define SDRAM_TYPE_DDR3    7
  21
  22 #define DDR_BL4         4       /* burst length 4 */
  23 #define DDR_BC4         DDR_BL4 /* burst chop for ddr3 */
  24 #define DDR_OTF         6       /* on-the-fly BC4 and BL8 */
  25 #define DDR_BL8         8       /* burst length 8 */
  26
  27 #define DDR3_RTT_OFF            0
  28 #define DDR3_RTT_60_OHM         1 /* RTT_Nom = RZQ/4 */
  29 #define DDR3_RTT_120_OHM        2 /* RTT_Nom = RZQ/2 */
  30 #define DDR3_RTT_40_OHM         3 /* RTT_Nom = RZQ/6 */
  31 #define DDR3_RTT_20_OHM         4 /* RTT_Nom = RZQ/12 */
  32 #define DDR3_RTT_30_OHM         5 /* RTT_Nom = RZQ/8 */
  33
  34 #define DDR2_RTT_OFF            0
  35 #define DDR2_RTT_75_OHM         1
  36 #define DDR2_RTT_150_OHM        2
  37 #define DDR2_RTT_50_OHM         3
  38
  39 #if defined(CONFIG_FSL_DDR1)
  40 #define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR        (1)
  41 typedef ddr1_spd_eeprom_t generic_spd_eeprom_t;
  42 #ifndef CONFIG_FSL_SDRAM_TYPE
  43 #define CONFIG_FSL_SDRAM_TYPE   SDRAM_TYPE_DDR1
  44 #endif
  45 #elif defined(CONFIG_FSL_DDR2)
  46 #define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR        (3)
  47 typedef ddr2_spd_eeprom_t generic_spd_eeprom_t;
  48 #ifndef CONFIG_FSL_SDRAM_TYPE
  49 #define CONFIG_FSL_SDRAM_TYPE   SDRAM_TYPE_DDR2
  50 #endif
  51 #elif defined(CONFIG_FSL_DDR3)
  52 #define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR        (3)     /* FIXME */
  53 typedef ddr3_spd_eeprom_t generic_spd_eeprom_t;
  54 #ifndef CONFIG_FSL_SDRAM_TYPE
  55 #define CONFIG_FSL_SDRAM_TYPE   SDRAM_TYPE_DDR3
  56 #endif
  57 #endif  /* #if defined(CONFIG_FSL_DDR1) */
  58
  59 #define FSL_DDR_ODT_NEVER               0x0
  60 #define FSL_DDR_ODT_CS                  0x1
  61 #define FSL_DDR_ODT_ALL_OTHER_CS        0x2
  62 #define FSL_DDR_ODT_OTHER_DIMM          0x3
  63 #define FSL_DDR_ODT_ALL                 0x4
  64 #define FSL_DDR_ODT_SAME_DIMM           0x5
  65 #define FSL_DDR_ODT_CS_AND_OTHER_DIMM   0x6
  66 #define FSL_DDR_ODT_OTHER_CS_ONSAMEDIMM 0x7
  67
  68 /* define bank(chip select) interleaving mode */
  69 #define FSL_DDR_CS0_CS1                 0x40
  70 #define FSL_DDR_CS2_CS3                 0x20
  71 #define FSL_DDR_CS0_CS1_AND_CS2_CS3     (FSL_DDR_CS0_CS1 | FSL_DDR_CS2_CS3)
  72 #define FSL_DDR_CS0_CS1_CS2_CS3         (FSL_DDR_CS0_CS1_AND_CS2_CS3 | 0x04)
  73
  74 /* define memory controller interleaving mode */
  75 #define FSL_DDR_CACHE_LINE_INTERLEAVING 0x0
  76 #define FSL_DDR_PAGE_INTERLEAVING       0x1
  77 #define FSL_DDR_BANK_INTERLEAVING       0x2
  78 #define FSL_DDR_SUPERBANK_INTERLEAVING  0x3
  79 #define FSL_DDR_3WAY_1KB_INTERLEAVING   0xA
  80 #define FSL_DDR_3WAY_4KB_INTERLEAVING   0xC
  81 #define FSL_DDR_3WAY_8KB_INTERLEAVING   0xD
  82 /* placeholder for 4-way interleaving */
  83 #define FSL_DDR_4WAY_1KB_INTERLEAVING   0x1A
  84 #define FSL_DDR_4WAY_4KB_INTERLEAVING   0x1C
  85 #define FSL_DDR_4WAY_8KB_INTERLEAVING   0x1D
  86
  87 /* DDR_SDRAM_CFG - DDR SDRAM Control Configuration
  88  */
  89 #define SDRAM_CFG_MEM_EN                0x80000000
  90 #define SDRAM_CFG_SREN                  0x40000000
  91 #define SDRAM_CFG_ECC_EN                0x20000000
  92 #define SDRAM_CFG_RD_EN                 0x10000000
  93 #define SDRAM_CFG_SDRAM_TYPE_DDR1       0x02000000
  94 #define SDRAM_CFG_SDRAM_TYPE_DDR2       0x03000000
  95 #define SDRAM_CFG_SDRAM_TYPE_MASK       0x07000000
  96 #define SDRAM_CFG_SDRAM_TYPE_SHIFT      24
  97 #define SDRAM_CFG_DYN_PWR               0x00200000
  98 #define SDRAM_CFG_DBW_MASK              0x00180000
  99 #define SDRAM_CFG_32_BE                 0x00080000
 100 #define SDRAM_CFG_16_BE                 0x00100000
 101 #define SDRAM_CFG_8_BE                  0x00040000
 102 #define SDRAM_CFG_NCAP                  0x00020000
 103 #define SDRAM_CFG_2T_EN                 0x00008000
 104 #define SDRAM_CFG_BI                    0x00000001
 105
 106 #define SDRAM_CFG2_D_INIT               0x00000010
 107 #define SDRAM_CFG2_ODT_CFG_MASK         0x00600000
 108 #define SDRAM_CFG2_ODT_NEVER            0
 109 #define SDRAM_CFG2_ODT_ONLY_WRITE       1
 110 #define SDRAM_CFG2_ODT_ONLY_READ        2
 111 #define SDRAM_CFG2_ODT_ALWAYS           3
 112
 113 #define TIMING_CFG_2_CPO_MASK   0x0F800000
 114
 115 #if defined(CONFIG_P4080)
 116 #define RD_TO_PRE_MASK          0xf
 117 #define RD_TO_PRE_SHIFT         13
 118 #define WR_DATA_DELAY_MASK      0xf
 119 #define WR_DATA_DELAY_SHIFT     9
 120 #else
 121 #define RD_TO_PRE_MASK          0x7
 122 #define RD_TO_PRE_SHIFT         13
 123 #define WR_DATA_DELAY_MASK      0x7
 124 #define WR_DATA_DELAY_SHIFT     10
 125 #endif
 126
 127 /* DDR_MD_CNTL */
 128 #define MD_CNTL_MD_EN           0x80000000
 129 #define MD_CNTL_CS_SEL_CS0      0x00000000
 130 #define MD_CNTL_CS_SEL_CS1      0x10000000
 131 #define MD_CNTL_CS_SEL_CS2      0x20000000
 132 #define MD_CNTL_CS_SEL_CS3      0x30000000
 133 #define MD_CNTL_CS_SEL_CS0_CS1  0x40000000
 134 #define MD_CNTL_CS_SEL_CS2_CS3  0x50000000
 135 #define MD_CNTL_MD_SEL_MR       0x00000000
 136 #define MD_CNTL_MD_SEL_EMR      0x01000000
 137 #define MD_CNTL_MD_SEL_EMR2     0x02000000
 138 #define MD_CNTL_MD_SEL_EMR3     0x03000000
 139 #define MD_CNTL_SET_REF         0x00800000
 140 #define MD_CNTL_SET_PRE         0x00400000
 141 #define MD_CNTL_CKE_CNTL_LOW    0x00100000
 142 #define MD_CNTL_CKE_CNTL_HIGH   0x00200000
 143 #define MD_CNTL_WRCW            0x00080000
 144 #define MD_CNTL_MD_VALUE(x)     (x & 0x0000FFFF)
 145
 146 /* DDR_CDR1 */
 147 #define DDR_CDR1_DHC_EN 0x80000000
 148
 149 /* Record of register values computed */
 150 typedef struct fsl_ddr_cfg_regs_s {
 151         struct {
 152                 unsigned int bnds;
 153                 unsigned int config;
 154                 unsigned int config_2;
 155         } cs[CONFIG_CHIP_SELECTS_PER_CTRL];
 156         unsigned int timing_cfg_3;
 157         unsigned int timing_cfg_0;
 158         unsigned int timing_cfg_1;
 159         unsigned int timing_cfg_2;
 160         unsigned int ddr_sdram_cfg;
 161         unsigned int ddr_sdram_cfg_2;
 162         unsigned int ddr_sdram_mode;
 163         unsigned int ddr_sdram_mode_2;
 164         unsigned int ddr_sdram_mode_3;
 165         unsigned int ddr_sdram_mode_4;
 166         unsigned int ddr_sdram_mode_5;
 167         unsigned int ddr_sdram_mode_6;
 168         unsigned int ddr_sdram_mode_7;
 169         unsigned int ddr_sdram_mode_8;
 170         unsigned int ddr_sdram_md_cntl;
 171         unsigned int ddr_sdram_interval;
 172         unsigned int ddr_data_init;
 173         unsigned int ddr_sdram_clk_cntl;
 174         unsigned int ddr_init_addr;
 175         unsigned int ddr_init_ext_addr;
 176         unsigned int timing_cfg_4;
 177         unsigned int timing_cfg_5;
 178         unsigned int ddr_zq_cntl;
 179         unsigned int ddr_wrlvl_cntl;
 180         unsigned int ddr_sr_cntr;
 181         unsigned int ddr_sdram_rcw_1;
 182         unsigned int ddr_sdram_rcw_2;
 183         unsigned int ddr_eor;
 184         unsigned int ddr_cdr1;
 185         unsigned int ddr_cdr2;
 186         unsigned int err_disable;
 187         unsigned int err_int_en;
 188         unsigned int debug[32];
 189 } fsl_ddr_cfg_regs_t;
 190
 191 typedef struct memctl_options_partial_s {
 192         unsigned int all_DIMMs_ECC_capable;
 193         unsigned int all_DIMMs_tCKmax_ps;
 194         unsigned int all_DIMMs_burst_lengths_bitmask;
 195         unsigned int all_DIMMs_registered;
 196         unsigned int all_DIMMs_unbuffered;
 197         /*      unsigned int lowest_common_SPD_caslat; */
 198         unsigned int all_DIMMs_minimum_tRCD_ps;
 199 } memctl_options_partial_t;
 200
 201 #define DDR_DATA_BUS_WIDTH_64 0
 202 #define DDR_DATA_BUS_WIDTH_32 1
 203 #define DDR_DATA_BUS_WIDTH_16 2
 204 /*
 205  * Generalized parameters for memory controller configuration,
 206  * might be a little specific to the FSL memory controller
 207  */
 208 typedef struct memctl_options_s {
 209         /*
 210          * Memory organization parameters
 211          *
 212          * if DIMM is present in the system
 213          * where DIMMs are with respect to chip select
 214          * where chip selects are with respect to memory boundaries
 215          */
 216         unsigned int registered_dimm_en;    /* use registered DIMM support */
 217
 218         /* Options local to a Chip Select */
 219         struct cs_local_opts_s {
 220                 unsigned int auto_precharge;
 221                 unsigned int odt_rd_cfg;
 222                 unsigned int odt_wr_cfg;
 223                 unsigned int odt_rtt_norm;
 224                 unsigned int odt_rtt_wr;
 225         } cs_local_opts[CONFIG_CHIP_SELECTS_PER_CTRL];
 226
 227         /* Special configurations for chip select */
 228         unsigned int memctl_interleaving;
 229         unsigned int memctl_interleaving_mode;
 230         unsigned int ba_intlv_ctl;
 231         unsigned int addr_hash;
 232
 233         /* Operational mode parameters */
 234         unsigned int ECC_mode;   /* Use ECC? */
 235         /* Initialize ECC using memory controller? */
 236         unsigned int ECC_init_using_memctl;
 237         unsigned int DQS_config;        /* Use DQS? maybe only with DDR2? */
 238         /* SREN - self-refresh during sleep */
 239         unsigned int self_refresh_in_sleep;
 240         unsigned int dynamic_power;     /* DYN_PWR */
 241         /* memory data width to use (16-bit, 32-bit, 64-bit) */
 242         unsigned int data_bus_width;
 243         unsigned int burst_length;      /* BL4, OTF and BL8 */
 244         /* On-The-Fly Burst Chop enable */
 245         unsigned int OTF_burst_chop_en;
 246         /* mirrior DIMMs for DDR3 */
 247         unsigned int mirrored_dimm;
 248         unsigned int quad_rank_present;
 249         unsigned int ap_en;     /* address parity enable for RDIMM */
 250
 251         /* Global Timing Parameters */
 252         unsigned int cas_latency_override;
 253         unsigned int cas_latency_override_value;
 254         unsigned int use_derated_caslat;
 255         unsigned int additive_latency_override;
 256         unsigned int additive_latency_override_value;
 257
 258         unsigned int clk_adjust;                /* */
 259         unsigned int cpo_override;
 260         unsigned int write_data_delay;          /* DQS adjust */
 261
 262         unsigned int wrlvl_override;
 263         unsigned int wrlvl_sample;              /* Write leveling */
 264         unsigned int wrlvl_start;
 265
 266         unsigned int half_strength_driver_enable;
 267         unsigned int twoT_en;
 268         unsigned int threeT_en;
 269         unsigned int bstopre;
 270         unsigned int tCKE_clock_pulse_width_ps; /* tCKE */
 271         unsigned int tFAW_window_four_activates_ps;     /* tFAW --  FOUR_ACT */
 272
 273         /* Rtt impedance */
 274         unsigned int rtt_override;              /* rtt_override enable */
 275         unsigned int rtt_override_value;        /* that is Rtt_Nom for DDR3 */
 276         unsigned int rtt_wr_override_value;     /* this is Rtt_WR for DDR3 */
 277
 278         /* Automatic self refresh */
 279         unsigned int auto_self_refresh_en;
 280         unsigned int sr_it;
 281         /* ZQ calibration */
 282         unsigned int zq_en;
 283         /* Write leveling */
 284         unsigned int wrlvl_en;
 285         /* RCW override for RDIMM */
 286         unsigned int rcw_override;
 287         unsigned int rcw_1;
 288         unsigned int rcw_2;
 289         /* control register 1 */
 290         unsigned int ddr_cdr1;
 291
 292         unsigned int trwt_override;
 293         unsigned int trwt;                      /* read-to-write turnaround */
 294 } memctl_options_t;
 295
 296 extern phys_size_t fsl_ddr_sdram(void);
 297 extern phys_size_t fsl_ddr_sdram_size(void);
 298 extern int fsl_use_spd(void);
 299 extern void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
 300                                         unsigned int ctrl_num);
 301
 302 /*
 303  * The 85xx boards have a common prototype for fixed_sdram so put the
 304  * declaration here.
 305  */
 306 #ifdef CONFIG_MPC85xx
 307 extern phys_size_t fixed_sdram(void);
 308 #endif
 309
 310 #if defined(CONFIG_DDR_ECC)
 311 extern void ddr_enable_ecc(unsigned int dram_size);
 312 #endif
 313
 314
 315 typedef struct fixed_ddr_parm{
 316         int min_freq;
 317         int max_freq;
 318         fsl_ddr_cfg_regs_t *ddr_settings;
 319 } fixed_ddr_parm_t;
 320 #endif