drivers/ddr/fsl/options.c

   1 /*
   2  * Copyright 2008, 2010-2016 Freescale Semiconductor, Inc.
   3  * Copyright 2017-2018 NXP Semiconductor
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <hwconfig.h>
  10 #include <fsl_ddr_sdram.h>
  11
  12 #include <fsl_ddr.h>
  13 #if defined(CONFIG_FSL_LSCH2) || defined(CONFIG_FSL_LSCH3) || \
  14         defined(CONFIG_ARM)
  15 #include <asm/arch/clock.h>
  16 #endif
  17
  18 /*
  19  * Use our own stack based buffer before relocation to allow accessing longer
  20  * hwconfig strings that might be in the environment before we've relocated.
  21  * This is pretty fragile on both the use of stack and if the buffer is big
  22  * enough. However we will get a warning from env_get_f() for the latter.
  23  */
  24
  25 /* Board-specific functions defined in each board's ddr.c */
  26 extern void fsl_ddr_board_options(memctl_options_t *popts,
  27                 dimm_params_t *pdimm,
  28                 unsigned int ctrl_num);
  29
  30 struct dynamic_odt {
  31         unsigned int odt_rd_cfg;
  32         unsigned int odt_wr_cfg;
  33         unsigned int odt_rtt_norm;
  34         unsigned int odt_rtt_wr;
  35 };
  36
  37 #ifdef CONFIG_SYS_FSL_DDR4
  38 /* Quad rank is not verified yet due availability.
  39  * Replacing 20 OHM with 34 OHM since DDR4 doesn't have 20 OHM option
  40  */
  41 static __maybe_unused const struct dynamic_odt single_Q[4] = {
  42         {       /* cs0 */
  43                 FSL_DDR_ODT_NEVER,
  44                 FSL_DDR_ODT_CS_AND_OTHER_DIMM,
  45                 DDR4_RTT_34_OHM,        /* unverified */
  46                 DDR4_RTT_120_OHM
  47         },
  48         {       /* cs1 */
  49                 FSL_DDR_ODT_NEVER,
  50                 FSL_DDR_ODT_NEVER,
  51                 DDR4_RTT_OFF,
  52                 DDR4_RTT_120_OHM
  53         },
  54         {       /* cs2 */
  55                 FSL_DDR_ODT_NEVER,
  56                 FSL_DDR_ODT_CS_AND_OTHER_DIMM,
  57                 DDR4_RTT_34_OHM,
  58                 DDR4_RTT_120_OHM
  59         },
  60         {       /* cs3 */
  61                 FSL_DDR_ODT_NEVER,
  62                 FSL_DDR_ODT_NEVER,      /* tied high */
  63                 DDR4_RTT_OFF,
  64                 DDR4_RTT_120_OHM
  65         }
  66 };
  67
  68 static __maybe_unused const struct dynamic_odt single_D[4] = {
  69         {       /* cs0 */
  70                 FSL_DDR_ODT_NEVER,
  71                 FSL_DDR_ODT_ALL,
  72                 DDR4_RTT_40_OHM,
  73                 DDR4_RTT_OFF
  74         },
  75         {       /* cs1 */
  76                 FSL_DDR_ODT_NEVER,
  77                 FSL_DDR_ODT_NEVER,
  78                 DDR4_RTT_OFF,
  79                 DDR4_RTT_OFF
  80         },
  81         {0, 0, 0, 0},
  82         {0, 0, 0, 0}
  83 };
  84
  85 static __maybe_unused const struct dynamic_odt single_S[4] = {
  86         {       /* cs0 */
  87                 FSL_DDR_ODT_NEVER,
  88                 FSL_DDR_ODT_ALL,
  89                 DDR4_RTT_40_OHM,
  90                 DDR4_RTT_OFF
  91         },
  92         {0, 0, 0, 0},
  93         {0, 0, 0, 0},
  94         {0, 0, 0, 0},
  95 };
  96
  97 static __maybe_unused const struct dynamic_odt dual_DD[4] = {
  98         {       /* cs0 */
  99                 FSL_DDR_ODT_NEVER,
 100                 FSL_DDR_ODT_SAME_DIMM,
 101                 DDR4_RTT_120_OHM,
 102                 DDR4_RTT_OFF
 103         },
 104         {       /* cs1 */
 105                 FSL_DDR_ODT_OTHER_DIMM,
 106                 FSL_DDR_ODT_OTHER_DIMM,
 107                 DDR4_RTT_34_OHM,
 108                 DDR4_RTT_OFF
 109         },
 110         {       /* cs2 */
 111                 FSL_DDR_ODT_NEVER,
 112                 FSL_DDR_ODT_SAME_DIMM,
 113                 DDR4_RTT_120_OHM,
 114                 DDR4_RTT_OFF
 115         },
 116         {       /* cs3 */
 117                 FSL_DDR_ODT_OTHER_DIMM,
 118                 FSL_DDR_ODT_OTHER_DIMM,
 119                 DDR4_RTT_34_OHM,
 120                 DDR4_RTT_OFF
 121         }
 122 };
 123
 124 static __maybe_unused const struct dynamic_odt dual_DS[4] = {
 125         {       /* cs0 */
 126                 FSL_DDR_ODT_NEVER,
 127                 FSL_DDR_ODT_SAME_DIMM,
 128                 DDR4_RTT_120_OHM,
 129                 DDR4_RTT_OFF
 130         },
 131         {       /* cs1 */
 132                 FSL_DDR_ODT_OTHER_DIMM,
 133                 FSL_DDR_ODT_OTHER_DIMM,
 134                 DDR4_RTT_34_OHM,
 135                 DDR4_RTT_OFF
 136         },
 137         {       /* cs2 */
 138                 FSL_DDR_ODT_OTHER_DIMM,
 139                 FSL_DDR_ODT_ALL,
 140                 DDR4_RTT_34_OHM,
 141                 DDR4_RTT_120_OHM
 142         },
 143         {0, 0, 0, 0}
 144 };
 145 static __maybe_unused const struct dynamic_odt dual_SD[4] = {
 146         {       /* cs0 */
 147                 FSL_DDR_ODT_OTHER_DIMM,
 148                 FSL_DDR_ODT_ALL,
 149                 DDR4_RTT_34_OHM,
 150                 DDR4_RTT_120_OHM
 151         },
 152         {0, 0, 0, 0},
 153         {       /* cs2 */
 154                 FSL_DDR_ODT_NEVER,
 155                 FSL_DDR_ODT_SAME_DIMM,
 156                 DDR4_RTT_120_OHM,
 157                 DDR4_RTT_OFF
 158         },
 159         {       /* cs3 */
 160                 FSL_DDR_ODT_OTHER_DIMM,
 161                 FSL_DDR_ODT_OTHER_DIMM,
 162                 DDR4_RTT_34_OHM,
 163                 DDR4_RTT_OFF
 164         }
 165 };
 166
 167 static __maybe_unused const struct dynamic_odt dual_SS[4] = {
 168         {       /* cs0 */
 169                 FSL_DDR_ODT_OTHER_DIMM,
 170                 FSL_DDR_ODT_ALL,
 171                 DDR4_RTT_34_OHM,
 172                 DDR4_RTT_120_OHM
 173         },
 174         {0, 0, 0, 0},
 175         {       /* cs2 */
 176                 FSL_DDR_ODT_OTHER_DIMM,
 177                 FSL_DDR_ODT_ALL,
 178                 DDR4_RTT_34_OHM,
 179                 DDR4_RTT_120_OHM
 180         },
 181         {0, 0, 0, 0}
 182 };
 183
 184 static __maybe_unused const struct dynamic_odt dual_D0[4] = {
 185         {       /* cs0 */
 186                 FSL_DDR_ODT_NEVER,
 187                 FSL_DDR_ODT_SAME_DIMM,
 188                 DDR4_RTT_40_OHM,
 189                 DDR4_RTT_OFF
 190         },
 191         {       /* cs1 */
 192                 FSL_DDR_ODT_NEVER,
 193                 FSL_DDR_ODT_NEVER,
 194                 DDR4_RTT_OFF,
 195                 DDR4_RTT_OFF
 196         },
 197         {0, 0, 0, 0},
 198         {0, 0, 0, 0}
 199 };
 200
 201 static __maybe_unused const struct dynamic_odt dual_0D[4] = {
 202         {0, 0, 0, 0},
 203         {0, 0, 0, 0},
 204         {       /* cs2 */
 205                 FSL_DDR_ODT_NEVER,
 206                 FSL_DDR_ODT_SAME_DIMM,
 207                 DDR4_RTT_40_OHM,
 208                 DDR4_RTT_OFF
 209         },
 210         {       /* cs3 */
 211                 FSL_DDR_ODT_NEVER,
 212                 FSL_DDR_ODT_NEVER,
 213                 DDR4_RTT_OFF,
 214                 DDR4_RTT_OFF
 215         }
 216 };
 217
 218 static __maybe_unused const struct dynamic_odt dual_S0[4] = {
 219         {       /* cs0 */
 220                 FSL_DDR_ODT_NEVER,
 221                 FSL_DDR_ODT_CS,
 222                 DDR4_RTT_40_OHM,
 223                 DDR4_RTT_OFF
 224         },
 225         {0, 0, 0, 0},
 226         {0, 0, 0, 0},
 227         {0, 0, 0, 0}
 228
 229 };
 230
 231 static __maybe_unused const struct dynamic_odt dual_0S[4] = {
 232         {0, 0, 0, 0},
 233         {0, 0, 0, 0},
 234         {       /* cs2 */
 235                 FSL_DDR_ODT_NEVER,
 236                 FSL_DDR_ODT_CS,
 237                 DDR4_RTT_40_OHM,
 238                 DDR4_RTT_OFF
 239         },
 240         {0, 0, 0, 0}
 241
 242 };
 243
 244 static __maybe_unused const struct dynamic_odt odt_unknown[4] = {
 245         {       /* cs0 */
 246                 FSL_DDR_ODT_NEVER,
 247                 FSL_DDR_ODT_CS,
 248                 DDR4_RTT_120_OHM,
 249                 DDR4_RTT_OFF
 250         },
 251         {       /* cs1 */
 252                 FSL_DDR_ODT_NEVER,
 253                 FSL_DDR_ODT_CS,
 254                 DDR4_RTT_120_OHM,
 255                 DDR4_RTT_OFF
 256         },
 257         {       /* cs2 */
 258                 FSL_DDR_ODT_NEVER,
 259                 FSL_DDR_ODT_CS,
 260                 DDR4_RTT_120_OHM,
 261                 DDR4_RTT_OFF
 262         },
 263         {       /* cs3 */
 264                 FSL_DDR_ODT_NEVER,
 265                 FSL_DDR_ODT_CS,
 266                 DDR4_RTT_120_OHM,
 267                 DDR4_RTT_OFF
 268         }
 269 };
 270 #elif defined(CONFIG_SYS_FSL_DDR3)
 271 static __maybe_unused const struct dynamic_odt single_Q[4] = {
 272         {       /* cs0 */
 273                 FSL_DDR_ODT_NEVER,
 274                 FSL_DDR_ODT_CS_AND_OTHER_DIMM,
 275                 DDR3_RTT_20_OHM,
 276                 DDR3_RTT_120_OHM
 277         },
 278         {       /* cs1 */
 279                 FSL_DDR_ODT_NEVER,
 280                 FSL_DDR_ODT_NEVER,      /* tied high */
 281                 DDR3_RTT_OFF,
 282                 DDR3_RTT_120_OHM
 283         },
 284         {       /* cs2 */
 285                 FSL_DDR_ODT_NEVER,
 286                 FSL_DDR_ODT_CS_AND_OTHER_DIMM,
 287                 DDR3_RTT_20_OHM,
 288                 DDR3_RTT_120_OHM
 289         },
 290         {       /* cs3 */
 291                 FSL_DDR_ODT_NEVER,
 292                 FSL_DDR_ODT_NEVER,      /* tied high */
 293                 DDR3_RTT_OFF,
 294                 DDR3_RTT_120_OHM
 295         }
 296 };
 297
 298 static __maybe_unused const struct dynamic_odt single_D[4] = {
 299         {       /* cs0 */
 300                 FSL_DDR_ODT_NEVER,
 301                 FSL_DDR_ODT_ALL,
 302                 DDR3_RTT_40_OHM,
 303                 DDR3_RTT_OFF
 304         },
 305         {       /* cs1 */
 306                 FSL_DDR_ODT_NEVER,
 307                 FSL_DDR_ODT_NEVER,
 308                 DDR3_RTT_OFF,
 309                 DDR3_RTT_OFF
 310         },
 311         {0, 0, 0, 0},
 312         {0, 0, 0, 0}
 313 };
 314
 315 static __maybe_unused const struct dynamic_odt single_S[4] = {
 316         {       /* cs0 */
 317                 FSL_DDR_ODT_NEVER,
 318                 FSL_DDR_ODT_ALL,
 319                 DDR3_RTT_40_OHM,
 320                 DDR3_RTT_OFF
 321         },
 322         {0, 0, 0, 0},
 323         {0, 0, 0, 0},
 324         {0, 0, 0, 0},
 325 };
 326
 327 static __maybe_unused const struct dynamic_odt dual_DD[4] = {
 328         {       /* cs0 */
 329                 FSL_DDR_ODT_NEVER,
 330                 FSL_DDR_ODT_SAME_DIMM,
 331                 DDR3_RTT_120_OHM,
 332                 DDR3_RTT_OFF
 333         },
 334         {       /* cs1 */
 335                 FSL_DDR_ODT_OTHER_DIMM,
 336                 FSL_DDR_ODT_OTHER_DIMM,
 337                 DDR3_RTT_30_OHM,
 338                 DDR3_RTT_OFF
 339         },
 340         {       /* cs2 */
 341                 FSL_DDR_ODT_NEVER,
 342                 FSL_DDR_ODT_SAME_DIMM,
 343                 DDR3_RTT_120_OHM,
 344                 DDR3_RTT_OFF
 345         },
 346         {       /* cs3 */
 347                 FSL_DDR_ODT_OTHER_DIMM,
 348                 FSL_DDR_ODT_OTHER_DIMM,
 349                 DDR3_RTT_30_OHM,
 350                 DDR3_RTT_OFF
 351         }
 352 };
 353
 354 static __maybe_unused const struct dynamic_odt dual_DS[4] = {
 355         {       /* cs0 */
 356                 FSL_DDR_ODT_NEVER,
 357                 FSL_DDR_ODT_SAME_DIMM,
 358                 DDR3_RTT_120_OHM,
 359                 DDR3_RTT_OFF
 360         },
 361         {       /* cs1 */
 362                 FSL_DDR_ODT_OTHER_DIMM,
 363                 FSL_DDR_ODT_OTHER_DIMM,
 364                 DDR3_RTT_30_OHM,
 365                 DDR3_RTT_OFF
 366         },
 367         {       /* cs2 */
 368                 FSL_DDR_ODT_OTHER_DIMM,
 369                 FSL_DDR_ODT_ALL,
 370                 DDR3_RTT_20_OHM,
 371                 DDR3_RTT_120_OHM
 372         },
 373         {0, 0, 0, 0}
 374 };
 375 static __maybe_unused const struct dynamic_odt dual_SD[4] = {
 376         {       /* cs0 */
 377                 FSL_DDR_ODT_OTHER_DIMM,
 378                 FSL_DDR_ODT_ALL,
 379                 DDR3_RTT_20_OHM,
 380                 DDR3_RTT_120_OHM
 381         },
 382         {0, 0, 0, 0},
 383         {       /* cs2 */
 384                 FSL_DDR_ODT_NEVER,
 385                 FSL_DDR_ODT_SAME_DIMM,
 386                 DDR3_RTT_120_OHM,
 387                 DDR3_RTT_OFF
 388         },
 389         {       /* cs3 */
 390                 FSL_DDR_ODT_OTHER_DIMM,
 391                 FSL_DDR_ODT_OTHER_DIMM,
 392                 DDR3_RTT_20_OHM,
 393                 DDR3_RTT_OFF
 394         }
 395 };
 396
 397 static __maybe_unused const struct dynamic_odt dual_SS[4] = {
 398         {       /* cs0 */
 399                 FSL_DDR_ODT_OTHER_DIMM,
 400                 FSL_DDR_ODT_ALL,
 401                 DDR3_RTT_30_OHM,
 402                 DDR3_RTT_120_OHM
 403         },
 404         {0, 0, 0, 0},
 405         {       /* cs2 */
 406                 FSL_DDR_ODT_OTHER_DIMM,
 407                 FSL_DDR_ODT_ALL,
 408                 DDR3_RTT_30_OHM,
 409                 DDR3_RTT_120_OHM
 410         },
 411         {0, 0, 0, 0}
 412 };
 413
 414 static __maybe_unused const struct dynamic_odt dual_D0[4] = {
 415         {       /* cs0 */
 416                 FSL_DDR_ODT_NEVER,
 417                 FSL_DDR_ODT_SAME_DIMM,
 418                 DDR3_RTT_40_OHM,
 419                 DDR3_RTT_OFF
 420         },
 421         {       /* cs1 */
 422                 FSL_DDR_ODT_NEVER,
 423                 FSL_DDR_ODT_NEVER,
 424                 DDR3_RTT_OFF,
 425                 DDR3_RTT_OFF
 426         },
 427         {0, 0, 0, 0},
 428         {0, 0, 0, 0}
 429 };
 430
 431 static __maybe_unused const struct dynamic_odt dual_0D[4] = {
 432         {0, 0, 0, 0},
 433         {0, 0, 0, 0},
 434         {       /* cs2 */
 435                 FSL_DDR_ODT_NEVER,
 436                 FSL_DDR_ODT_SAME_DIMM,
 437                 DDR3_RTT_40_OHM,
 438                 DDR3_RTT_OFF
 439         },
 440         {       /* cs3 */
 441                 FSL_DDR_ODT_NEVER,
 442                 FSL_DDR_ODT_NEVER,
 443                 DDR3_RTT_OFF,
 444                 DDR3_RTT_OFF
 445         }
 446 };
 447
 448 static __maybe_unused const struct dynamic_odt dual_S0[4] = {
 449         {       /* cs0 */
 450                 FSL_DDR_ODT_NEVER,
 451                 FSL_DDR_ODT_CS,
 452                 DDR3_RTT_40_OHM,
 453                 DDR3_RTT_OFF
 454         },
 455         {0, 0, 0, 0},
 456         {0, 0, 0, 0},
 457         {0, 0, 0, 0}
 458
 459 };
 460
 461 static __maybe_unused const struct dynamic_odt dual_0S[4] = {
 462         {0, 0, 0, 0},
 463         {0, 0, 0, 0},
 464         {       /* cs2 */
 465                 FSL_DDR_ODT_NEVER,
 466                 FSL_DDR_ODT_CS,
 467                 DDR3_RTT_40_OHM,
 468                 DDR3_RTT_OFF
 469         },
 470         {0, 0, 0, 0}
 471
 472 };
 473
 474 static __maybe_unused const struct dynamic_odt odt_unknown[4] = {
 475         {       /* cs0 */
 476                 FSL_DDR_ODT_NEVER,
 477                 FSL_DDR_ODT_CS,
 478                 DDR3_RTT_120_OHM,
 479                 DDR3_RTT_OFF
 480         },
 481         {       /* cs1 */
 482                 FSL_DDR_ODT_NEVER,
 483                 FSL_DDR_ODT_CS,
 484                 DDR3_RTT_120_OHM,
 485                 DDR3_RTT_OFF
 486         },
 487         {       /* cs2 */
 488                 FSL_DDR_ODT_NEVER,
 489                 FSL_DDR_ODT_CS,
 490                 DDR3_RTT_120_OHM,
 491                 DDR3_RTT_OFF
 492         },
 493         {       /* cs3 */
 494                 FSL_DDR_ODT_NEVER,
 495                 FSL_DDR_ODT_CS,
 496                 DDR3_RTT_120_OHM,
 497                 DDR3_RTT_OFF
 498         }
 499 };
 500 #else   /* CONFIG_SYS_FSL_DDR3 */
 501 static __maybe_unused const struct dynamic_odt single_Q[4] = {
 502         {0, 0, 0, 0},
 503         {0, 0, 0, 0},
 504         {0, 0, 0, 0},
 505         {0, 0, 0, 0}
 506 };
 507
 508 static __maybe_unused const struct dynamic_odt single_D[4] = {
 509         {       /* cs0 */
 510                 FSL_DDR_ODT_NEVER,
 511                 FSL_DDR_ODT_ALL,
 512                 DDR2_RTT_150_OHM,
 513                 DDR2_RTT_OFF
 514         },
 515         {       /* cs1 */
 516                 FSL_DDR_ODT_NEVER,
 517                 FSL_DDR_ODT_NEVER,
 518                 DDR2_RTT_OFF,
 519                 DDR2_RTT_OFF
 520         },
 521         {0, 0, 0, 0},
 522         {0, 0, 0, 0}
 523 };
 524
 525 static __maybe_unused const struct dynamic_odt single_S[4] = {
 526         {       /* cs0 */
 527                 FSL_DDR_ODT_NEVER,
 528                 FSL_DDR_ODT_ALL,
 529                 DDR2_RTT_150_OHM,
 530                 DDR2_RTT_OFF
 531         },
 532         {0, 0, 0, 0},
 533         {0, 0, 0, 0},
 534         {0, 0, 0, 0},
 535 };
 536
 537 static __maybe_unused const struct dynamic_odt dual_DD[4] = {
 538         {       /* cs0 */
 539                 FSL_DDR_ODT_OTHER_DIMM,
 540                 FSL_DDR_ODT_OTHER_DIMM,
 541                 DDR2_RTT_75_OHM,
 542                 DDR2_RTT_OFF
 543         },
 544         {       /* cs1 */
 545                 FSL_DDR_ODT_NEVER,
 546                 FSL_DDR_ODT_NEVER,
 547                 DDR2_RTT_OFF,
 548                 DDR2_RTT_OFF
 549         },
 550         {       /* cs2 */
 551                 FSL_DDR_ODT_OTHER_DIMM,
 552                 FSL_DDR_ODT_OTHER_DIMM,
 553                 DDR2_RTT_75_OHM,
 554                 DDR2_RTT_OFF
 555         },
 556         {       /* cs3 */
 557                 FSL_DDR_ODT_NEVER,
 558                 FSL_DDR_ODT_NEVER,
 559                 DDR2_RTT_OFF,
 560                 DDR2_RTT_OFF
 561         }
 562 };
 563
 564 static __maybe_unused const struct dynamic_odt dual_DS[4] = {
 565         {       /* cs0 */
 566                 FSL_DDR_ODT_OTHER_DIMM,
 567                 FSL_DDR_ODT_OTHER_DIMM,
 568                 DDR2_RTT_75_OHM,
 569                 DDR2_RTT_OFF
 570         },
 571         {       /* cs1 */
 572                 FSL_DDR_ODT_NEVER,
 573                 FSL_DDR_ODT_NEVER,
 574                 DDR2_RTT_OFF,
 575                 DDR2_RTT_OFF
 576         },
 577         {       /* cs2 */
 578                 FSL_DDR_ODT_OTHER_DIMM,
 579                 FSL_DDR_ODT_OTHER_DIMM,
 580                 DDR2_RTT_75_OHM,
 581                 DDR2_RTT_OFF
 582         },
 583         {0, 0, 0, 0}
 584 };
 585
 586 static __maybe_unused const struct dynamic_odt dual_SD[4] = {
 587         {       /* cs0 */
 588                 FSL_DDR_ODT_OTHER_DIMM,
 589                 FSL_DDR_ODT_OTHER_DIMM,
 590                 DDR2_RTT_75_OHM,
 591                 DDR2_RTT_OFF
 592         },
 593         {0, 0, 0, 0},
 594         {       /* cs2 */
 595                 FSL_DDR_ODT_OTHER_DIMM,
 596                 FSL_DDR_ODT_OTHER_DIMM,
 597                 DDR2_RTT_75_OHM,
 598                 DDR2_RTT_OFF
 599         },
 600         {       /* cs3 */
 601                 FSL_DDR_ODT_NEVER,
 602                 FSL_DDR_ODT_NEVER,
 603                 DDR2_RTT_OFF,
 604                 DDR2_RTT_OFF
 605         }
 606 };
 607
 608 static __maybe_unused const struct dynamic_odt dual_SS[4] = {
 609         {       /* cs0 */
 610                 FSL_DDR_ODT_OTHER_DIMM,
 611                 FSL_DDR_ODT_OTHER_DIMM,
 612                 DDR2_RTT_75_OHM,
 613                 DDR2_RTT_OFF
 614         },
 615         {0, 0, 0, 0},
 616         {       /* cs2 */
 617                 FSL_DDR_ODT_OTHER_DIMM,
 618                 FSL_DDR_ODT_OTHER_DIMM,
 619                 DDR2_RTT_75_OHM,
 620                 DDR2_RTT_OFF
 621         },
 622         {0, 0, 0, 0}
 623 };
 624
 625 static __maybe_unused const struct dynamic_odt dual_D0[4] = {
 626         {       /* cs0 */
 627                 FSL_DDR_ODT_NEVER,
 628                 FSL_DDR_ODT_ALL,
 629                 DDR2_RTT_150_OHM,
 630                 DDR2_RTT_OFF
 631         },
 632         {       /* cs1 */
 633                 FSL_DDR_ODT_NEVER,
 634                 FSL_DDR_ODT_NEVER,
 635                 DDR2_RTT_OFF,
 636                 DDR2_RTT_OFF
 637         },
 638         {0, 0, 0, 0},
 639         {0, 0, 0, 0}
 640 };
 641
 642 static __maybe_unused const struct dynamic_odt dual_0D[4] = {
 643         {0, 0, 0, 0},
 644         {0, 0, 0, 0},
 645         {       /* cs2 */
 646                 FSL_DDR_ODT_NEVER,
 647                 FSL_DDR_ODT_ALL,
 648                 DDR2_RTT_150_OHM,
 649                 DDR2_RTT_OFF
 650         },
 651         {       /* cs3 */
 652                 FSL_DDR_ODT_NEVER,
 653                 FSL_DDR_ODT_NEVER,
 654                 DDR2_RTT_OFF,
 655                 DDR2_RTT_OFF
 656         }
 657 };
 658
 659 static __maybe_unused const struct dynamic_odt dual_S0[4] = {
 660         {       /* cs0 */
 661                 FSL_DDR_ODT_NEVER,
 662                 FSL_DDR_ODT_CS,
 663                 DDR2_RTT_150_OHM,
 664                 DDR2_RTT_OFF
 665         },
 666         {0, 0, 0, 0},
 667         {0, 0, 0, 0},
 668         {0, 0, 0, 0}
 669
 670 };
 671
 672 static __maybe_unused const struct dynamic_odt dual_0S[4] = {
 673         {0, 0, 0, 0},
 674         {0, 0, 0, 0},
 675         {       /* cs2 */
 676                 FSL_DDR_ODT_NEVER,
 677                 FSL_DDR_ODT_CS,
 678                 DDR2_RTT_150_OHM,
 679                 DDR2_RTT_OFF
 680         },
 681         {0, 0, 0, 0}
 682
 683 };
 684
 685 static __maybe_unused const struct dynamic_odt odt_unknown[4] = {
 686         {       /* cs0 */
 687                 FSL_DDR_ODT_NEVER,
 688                 FSL_DDR_ODT_CS,
 689                 DDR2_RTT_75_OHM,
 690                 DDR2_RTT_OFF
 691         },
 692         {       /* cs1 */
 693                 FSL_DDR_ODT_NEVER,
 694                 FSL_DDR_ODT_NEVER,
 695                 DDR2_RTT_OFF,
 696                 DDR2_RTT_OFF
 697         },
 698         {       /* cs2 */
 699                 FSL_DDR_ODT_NEVER,
 700                 FSL_DDR_ODT_CS,
 701                 DDR2_RTT_75_OHM,
 702                 DDR2_RTT_OFF
 703         },
 704         {       /* cs3 */
 705                 FSL_DDR_ODT_NEVER,
 706                 FSL_DDR_ODT_NEVER,
 707                 DDR2_RTT_OFF,
 708                 DDR2_RTT_OFF
 709         }
 710 };
 711 #endif
 712
 713 /*
 714  * Automatically seleect bank interleaving mode based on DIMMs
 715  * in this order: cs0_cs1_cs2_cs3, cs0_cs1, null.
 716  * This function only deal with one or two slots per controller.
 717  */
 718 static inline unsigned int auto_bank_intlv(dimm_params_t *pdimm)
 719 {
 720 #if (CONFIG_DIMM_SLOTS_PER_CTLR == 1)
 721         if (pdimm[0].n_ranks == 4)
 722                 return FSL_DDR_CS0_CS1_CS2_CS3;
 723         else if (pdimm[0].n_ranks == 2)
 724                 return FSL_DDR_CS0_CS1;
 725 #elif (CONFIG_DIMM_SLOTS_PER_CTLR == 2)
 726 #ifdef CONFIG_FSL_DDR_FIRST_SLOT_QUAD_CAPABLE
 727         if (pdimm[0].n_ranks == 4)
 728                 return FSL_DDR_CS0_CS1_CS2_CS3;
 729 #endif
 730         if (pdimm[0].n_ranks == 2) {
 731                 if (pdimm[1].n_ranks == 2)
 732                         return FSL_DDR_CS0_CS1_CS2_CS3;
 733                 else
 734                         return FSL_DDR_CS0_CS1;
 735         }
 736 #endif
 737         return 0;
 738 }
 739
 740 unsigned int populate_memctl_options(const common_timing_params_t *common_dimm,
 741                         memctl_options_t *popts,
 742                         dimm_params_t *pdimm,
 743                         unsigned int ctrl_num)
 744 {
 745         unsigned int i;
 746         char buffer[HWCONFIG_BUFFER_SIZE];
 747         char *buf = NULL;
 748 #if defined(CONFIG_SYS_FSL_DDR3) || \
 749         defined(CONFIG_SYS_FSL_DDR2) || \
 750         defined(CONFIG_SYS_FSL_DDR4)
 751         const struct dynamic_odt *pdodt = odt_unknown;
 752 #endif
 753         ulong ddr_freq;
 754
 755         /*
 756          * Extract hwconfig from environment since we have not properly setup
 757          * the environment but need it for ddr config params
 758          */
 759         if (env_get_f("hwconfig", buffer, sizeof(buffer)) > 0)
 760                 buf = buffer;
 761
 762 #if defined(CONFIG_SYS_FSL_DDR3) || \
 763         defined(CONFIG_SYS_FSL_DDR2) || \
 764         defined(CONFIG_SYS_FSL_DDR4)
 765         /* Chip select options. */
 766 #if (CONFIG_DIMM_SLOTS_PER_CTLR == 1)
 767         switch (pdimm[0].n_ranks) {
 768         case 1:
 769                 pdodt = single_S;
 770                 break;
 771         case 2:
 772                 pdodt = single_D;
 773                 break;
 774         case 4:
 775                 pdodt = single_Q;
 776                 break;
 777         }
 778 #elif (CONFIG_DIMM_SLOTS_PER_CTLR == 2)
 779         switch (pdimm[0].n_ranks) {
 780 #ifdef CONFIG_FSL_DDR_FIRST_SLOT_QUAD_CAPABLE
 781         case 4:
 782                 pdodt = single_Q;
 783                 if (pdimm[1].n_ranks)
 784                         printf("Error: Quad- and Dual-rank DIMMs cannot be used together\n");
 785                 break;
 786 #endif
 787         case 2:
 788                 switch (pdimm[1].n_ranks) {
 789                 case 2:
 790                         pdodt = dual_DD;
 791                         break;
 792                 case 1:
 793                         pdodt = dual_DS;
 794                         break;
 795                 case 0:
 796                         pdodt = dual_D0;
 797                         break;
 798                 }
 799                 break;
 800         case 1:
 801                 switch (pdimm[1].n_ranks) {
 802                 case 2:
 803                         pdodt = dual_SD;
 804                         break;
 805                 case 1:
 806                         pdodt = dual_SS;
 807                         break;
 808                 case 0:
 809                         pdodt = dual_S0;
 810                         break;
 811                 }
 812                 break;
 813         case 0:
 814                 switch (pdimm[1].n_ranks) {
 815                 case 2:
 816                         pdodt = dual_0D;
 817                         break;
 818                 case 1:
 819                         pdodt = dual_0S;
 820                         break;
 821                 }
 822                 break;
 823         }
 824 #endif  /* CONFIG_DIMM_SLOTS_PER_CTLR */
 825 #endif  /* CONFIG_SYS_FSL_DDR2, 3, 4 */
 826
 827         /* Pick chip-select local options. */
 828         for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
 829 #if defined(CONFIG_SYS_FSL_DDR3) || \
 830         defined(CONFIG_SYS_FSL_DDR2) || \
 831         defined(CONFIG_SYS_FSL_DDR4)
 832                 popts->cs_local_opts[i].odt_rd_cfg = pdodt[i].odt_rd_cfg;
 833                 popts->cs_local_opts[i].odt_wr_cfg = pdodt[i].odt_wr_cfg;
 834                 popts->cs_local_opts[i].odt_rtt_norm = pdodt[i].odt_rtt_norm;
 835                 popts->cs_local_opts[i].odt_rtt_wr = pdodt[i].odt_rtt_wr;
 836 #else
 837                 popts->cs_local_opts[i].odt_rd_cfg = FSL_DDR_ODT_NEVER;
 838                 popts->cs_local_opts[i].odt_wr_cfg = FSL_DDR_ODT_CS;
 839 #endif
 840                 popts->cs_local_opts[i].auto_precharge = 0;
 841         }
 842
 843         /* Pick interleaving mode. */
 844
 845         /*
 846          * 0 = no interleaving
 847          * 1 = interleaving between 2 controllers
 848          */
 849         popts->memctl_interleaving = 0;
 850
 851         /*
 852          * 0 = cacheline
 853          * 1 = page
 854          * 2 = (logical) bank
 855          * 3 = superbank (only if CS interleaving is enabled)
 856          */
 857         popts->memctl_interleaving_mode = 0;
 858
 859         /*
 860          * 0: cacheline: bit 30 of the 36-bit physical addr selects the memctl
 861          * 1: page:      bit to the left of the column bits selects the memctl
 862          * 2: bank:      bit to the left of the bank bits selects the memctl
 863          * 3: superbank: bit to the left of the chip select selects the memctl
 864          *
 865          * NOTE: ba_intlv (rank interleaving) is independent of memory
 866          * controller interleaving; it is only within a memory controller.
 867          * Must use superbank interleaving if rank interleaving is used and
 868          * memory controller interleaving is enabled.
 869          */
 870
 871         /*
 872          * 0 = no
 873          * 0x40 = CS0,CS1
 874          * 0x20 = CS2,CS3
 875          * 0x60 = CS0,CS1 + CS2,CS3
 876          * 0x04 = CS0,CS1,CS2,CS3
 877          */
 878         popts->ba_intlv_ctl = 0;
 879
 880         /* Memory Organization Parameters */
 881         popts->registered_dimm_en = common_dimm->all_dimms_registered;
 882
 883         /* Operational Mode Paramters */
 884
 885         /* Pick ECC modes */
 886         popts->ecc_mode = 0;              /* 0 = disabled, 1 = enabled */
 887 #ifdef CONFIG_DDR_ECC
 888         if (hwconfig_sub_f("fsl_ddr", "ecc", buf)) {
 889                 if (hwconfig_subarg_cmp_f("fsl_ddr", "ecc", "on", buf))
 890                         popts->ecc_mode = 1;
 891         } else
 892                 popts->ecc_mode = 1;
 893 #endif
 894         /* 1 = use memory controler to init data */
 895         popts->ecc_init_using_memctl = popts->ecc_mode ? 1 : 0;
 896
 897         /*
 898          * Choose DQS config
 899          * 0 for DDR1
 900          * 1 for DDR2
 901          */
 902 #if defined(CONFIG_SYS_FSL_DDR1)
 903         popts->dqs_config = 0;
 904 #elif defined(CONFIG_SYS_FSL_DDR2) || defined(CONFIG_SYS_FSL_DDR3)
 905         popts->dqs_config = 1;
 906 #endif
 907
 908         /* Choose self-refresh during sleep. */
 909         popts->self_refresh_in_sleep = 1;
 910
 911         /* Choose dynamic power management mode. */
 912         popts->dynamic_power = 0;
 913
 914         /*
 915          * check first dimm for primary sdram width
 916          * presuming all dimms are similar
 917          * 0 = 64-bit, 1 = 32-bit, 2 = 16-bit
 918          */
 919 #if defined(CONFIG_SYS_FSL_DDR1) || defined(CONFIG_SYS_FSL_DDR2)
 920         if (pdimm[0].n_ranks != 0) {
 921                 if ((pdimm[0].data_width >= 64) && \
 922                         (pdimm[0].data_width <= 72))
 923                         popts->data_bus_width = 0;
 924                 else if ((pdimm[0].data_width >= 32) && \
 925                         (pdimm[0].data_width <= 40))
 926                         popts->data_bus_width = 1;
 927                 else {
 928                         panic("Error: data width %u is invalid!\n",
 929                                 pdimm[0].data_width);
 930                 }
 931         }
 932 #else
 933         if (pdimm[0].n_ranks != 0) {
 934                 if (pdimm[0].primary_sdram_width == 64)
 935                         popts->data_bus_width = 0;
 936                 else if (pdimm[0].primary_sdram_width == 32)
 937                         popts->data_bus_width = 1;
 938                 else if (pdimm[0].primary_sdram_width == 16)
 939                         popts->data_bus_width = 2;
 940                 else {
 941                         panic("Error: primary sdram width %u is invalid!\n",
 942                                 pdimm[0].primary_sdram_width);
 943                 }
 944         }
 945 #endif
 946
 947         popts->x4_en = (pdimm[0].device_width == 4) ? 1 : 0;
 948
 949         /* Choose burst length. */
 950 #if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
 951 #if defined(CONFIG_E500MC)
 952         popts->otf_burst_chop_en = 0;   /* on-the-fly burst chop disable */
 953         popts->burst_length = DDR_BL8;  /* Fixed 8-beat burst len */
 954 #else
 955         if ((popts->data_bus_width == 1) || (popts->data_bus_width == 2)) {
 956                 /* 32-bit or 16-bit bus */
 957                 popts->otf_burst_chop_en = 0;
 958                 popts->burst_length = DDR_BL8;
 959         } else {
 960                 popts->otf_burst_chop_en = 1;   /* on-the-fly burst chop */
 961                 popts->burst_length = DDR_OTF;  /* on-the-fly BC4 and BL8 */
 962         }
 963 #endif
 964 #else
 965         popts->burst_length = DDR_BL4;  /* has to be 4 for DDR2 */
 966 #endif
 967
 968         /* Choose ddr controller address mirror mode */
 969 #if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
 970         for (i = 0; i < CONFIG_DIMM_SLOTS_PER_CTLR; i++) {
 971                 if (pdimm[i].n_ranks) {
 972                         popts->mirrored_dimm = pdimm[i].mirrored_dimm;
 973                         break;
 974                 }
 975         }
 976 #endif
 977
 978         /* Global Timing Parameters. */
 979         debug("mclk_ps = %u ps\n", get_memory_clk_period_ps(ctrl_num));
 980
 981         /* Pick a caslat override. */
 982         popts->cas_latency_override = 0;
 983         popts->cas_latency_override_value = 3;
 984         if (popts->cas_latency_override) {
 985                 debug("using caslat override value = %u\n",
 986                        popts->cas_latency_override_value);
 987         }
 988
 989         /* Decide whether to use the computed derated latency */
 990         popts->use_derated_caslat = 0;
 991
 992         /* Choose an additive latency. */
 993         popts->additive_latency_override = 0;
 994         popts->additive_latency_override_value = 3;
 995         if (popts->additive_latency_override) {
 996                 debug("using additive latency override value = %u\n",
 997                        popts->additive_latency_override_value);
 998         }
 999
1000         /*
1001          * 2T_EN setting
1002          *
1003          * Factors to consider for 2T_EN:
1004          *      - number of DIMMs installed
1005          *      - number of components, number of active ranks
1006          *      - how much time you want to spend playing around
1007          */
1008         popts->twot_en = 0;
1009         popts->threet_en = 0;
1010
1011         /* for RDIMM and DDR4 UDIMM/discrete memory, address parity enable */
1012         if (popts->registered_dimm_en)
1013                 popts->ap_en = 1; /* 0 = disable,  1 = enable */
1014         else
1015                 popts->ap_en = 0; /* disabled for DDR4 UDIMM/discrete default */
1016
1017         if (hwconfig_sub_f("fsl_ddr", "parity", buf)) {
1018                 if (hwconfig_subarg_cmp_f("fsl_ddr", "parity", "on", buf)) {
1019                         if (popts->registered_dimm_en ||
1020                             (CONFIG_FSL_SDRAM_TYPE == SDRAM_TYPE_DDR4))
1021                                 popts->ap_en = 1;
1022                 }
1023         }
1024
1025         /*
1026          * BSTTOPRE precharge interval
1027          *
1028          * Set this to 0 for global auto precharge
1029          * The value of 0x100 has been used for DDR1, DDR2, DDR3.
1030          * It is not wrong. Any value should be OK. The performance depends on
1031          * applications. There is no one good value for all. One way to set
1032          * is to use 1/4 of refint value.
1033          */
1034         popts->bstopre = picos_to_mclk(ctrl_num, common_dimm->refresh_rate_ps)
1035                          >> 2;
1036
1037         /*
1038          * Window for four activates -- tFAW
1039          *
1040          * FIXME: UM: applies only to DDR2/DDR3 with eight logical banks only
1041          * FIXME: varies depending upon number of column addresses or data
1042          * FIXME: width, was considering looking at pdimm->primary_sdram_width
1043          */
1044 #if defined(CONFIG_SYS_FSL_DDR1)
1045         popts->tfaw_window_four_activates_ps = mclk_to_picos(ctrl_num, 1);
1046
1047 #elif defined(CONFIG_SYS_FSL_DDR2)
1048         /*
1049          * x4/x8;  some datasheets have 35000
1050          * x16 wide columns only?  Use 50000?
1051          */
1052         popts->tfaw_window_four_activates_ps = 37500;
1053
1054 #else
1055         popts->tfaw_window_four_activates_ps = pdimm[0].tfaw_ps;
1056 #endif
1057         popts->zq_en = 0;
1058         popts->wrlvl_en = 0;
1059 #if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
1060         /*
1061          * due to ddr3 dimm is fly-by topology
1062          * we suggest to enable write leveling to
1063          * meet the tQDSS under different loading.
1064          */
1065         popts->wrlvl_en = 1;
1066         popts->zq_en = 1;
1067         popts->wrlvl_override = 0;
1068 #endif
1069
1070         /*
1071          * Check interleaving configuration from environment.
1072          * Please refer to doc/README.fsl-ddr for the detail.
1073          *
1074          * If memory controller interleaving is enabled, then the data
1075          * bus widths must be programmed identically for all memory controllers.
1076          *
1077          * Attempt to set all controllers to the same chip select
1078          * interleaving mode. It will do a best effort to get the
1079          * requested ranks interleaved together such that the result
1080          * should be a subset of the requested configuration.
1081          *
1082          * if CONFIG_SYS_FSL_DDR_INTLV_256B is defined, mandatory interleaving
1083          * with 256 Byte is enabled.
1084          */
1085 #if (CONFIG_SYS_NUM_DDR_CTLRS > 1)
1086         if (!hwconfig_sub_f("fsl_ddr", "ctlr_intlv", buf))
1087 #ifdef CONFIG_SYS_FSL_DDR_INTLV_256B
1088                 ;
1089 #else
1090                 goto done;
1091 #endif
1092         if (pdimm[0].n_ranks == 0) {
1093                 printf("There is no rank on CS0 for controller %d.\n", ctrl_num);
1094                 popts->memctl_interleaving = 0;
1095                 goto done;
1096         }
1097         popts->memctl_interleaving = 1;
1098 #ifdef CONFIG_SYS_FSL_DDR_INTLV_256B
1099         popts->memctl_interleaving_mode = FSL_DDR_256B_INTERLEAVING;
1100         popts->memctl_interleaving = 1;
1101         debug("256 Byte interleaving\n");
1102 #else
1103         /*
1104          * test null first. if CONFIG_HWCONFIG is not defined
1105          * hwconfig_arg_cmp returns non-zero
1106          */
1107         if (hwconfig_subarg_cmp_f("fsl_ddr", "ctlr_intlv",
1108                                     "null", buf)) {
1109                 popts->memctl_interleaving = 0;
1110                 debug("memory controller interleaving disabled.\n");
1111         } else if (hwconfig_subarg_cmp_f("fsl_ddr",
1112                                         "ctlr_intlv",
1113                                         "cacheline", buf)) {
1114                 popts->memctl_interleaving_mode =
1115                         ((CONFIG_SYS_NUM_DDR_CTLRS == 3) && ctrl_num == 2) ?
1116                         0 : FSL_DDR_CACHE_LINE_INTERLEAVING;
1117                 popts->memctl_interleaving =
1118                         ((CONFIG_SYS_NUM_DDR_CTLRS == 3) && ctrl_num == 2) ?
1119                         0 : 1;
1120         } else if (hwconfig_subarg_cmp_f("fsl_ddr",
1121                                         "ctlr_intlv",
1122                                         "page", buf)) {
1123                 popts->memctl_interleaving_mode =
1124                         ((CONFIG_SYS_NUM_DDR_CTLRS == 3) && ctrl_num == 2) ?
1125                         0 : FSL_DDR_PAGE_INTERLEAVING;
1126                 popts->memctl_interleaving =
1127                         ((CONFIG_SYS_NUM_DDR_CTLRS == 3) && ctrl_num == 2) ?
1128                         0 : 1;
1129         } else if (hwconfig_subarg_cmp_f("fsl_ddr",
1130                                         "ctlr_intlv",
1131                                         "bank", buf)) {
1132                 popts->memctl_interleaving_mode =
1133                         ((CONFIG_SYS_NUM_DDR_CTLRS == 3) && ctrl_num == 2) ?
1134                         0 : FSL_DDR_BANK_INTERLEAVING;
1135                 popts->memctl_interleaving =
1136                         ((CONFIG_SYS_NUM_DDR_CTLRS == 3) && ctrl_num == 2) ?
1137                         0 : 1;
1138         } else if (hwconfig_subarg_cmp_f("fsl_ddr",
1139                                         "ctlr_intlv",
1140                                         "superbank", buf)) {
1141                 popts->memctl_interleaving_mode =
1142                         ((CONFIG_SYS_NUM_DDR_CTLRS == 3) && ctrl_num == 2) ?
1143                         0 : FSL_DDR_SUPERBANK_INTERLEAVING;
1144                 popts->memctl_interleaving =
1145                         ((CONFIG_SYS_NUM_DDR_CTLRS == 3) && ctrl_num == 2) ?
1146                         0 : 1;
1147 #if (CONFIG_SYS_NUM_DDR_CTLRS == 3)
1148         } else if (hwconfig_subarg_cmp_f("fsl_ddr",
1149                                         "ctlr_intlv",
1150                                         "3way_1KB", buf)) {
1151                 popts->memctl_interleaving_mode =
1152                         FSL_DDR_3WAY_1KB_INTERLEAVING;
1153         } else if (hwconfig_subarg_cmp_f("fsl_ddr",
1154                                         "ctlr_intlv",
1155                                         "3way_4KB", buf)) {
1156                 popts->memctl_interleaving_mode =
1157                         FSL_DDR_3WAY_4KB_INTERLEAVING;
1158         } else if (hwconfig_subarg_cmp_f("fsl_ddr",
1159                                         "ctlr_intlv",
1160                                         "3way_8KB", buf)) {
1161                 popts->memctl_interleaving_mode =
1162                         FSL_DDR_3WAY_8KB_INTERLEAVING;
1163 #elif (CONFIG_SYS_NUM_DDR_CTLRS == 4)
1164         } else if (hwconfig_subarg_cmp_f("fsl_ddr",
1165                                         "ctlr_intlv",
1166                                         "4way_1KB", buf)) {
1167                 popts->memctl_interleaving_mode =
1168                         FSL_DDR_4WAY_1KB_INTERLEAVING;
1169         } else if (hwconfig_subarg_cmp_f("fsl_ddr",
1170                                         "ctlr_intlv",
1171                                         "4way_4KB", buf)) {
1172                 popts->memctl_interleaving_mode =
1173                         FSL_DDR_4WAY_4KB_INTERLEAVING;
1174         } else if (hwconfig_subarg_cmp_f("fsl_ddr",
1175                                         "ctlr_intlv",
1176                                         "4way_8KB", buf)) {
1177                 popts->memctl_interleaving_mode =
1178                         FSL_DDR_4WAY_8KB_INTERLEAVING;
1179 #endif
1180         } else {
1181                 popts->memctl_interleaving = 0;
1182                 printf("hwconfig has unrecognized parameter for ctlr_intlv.\n");
1183         }
1184 #endif  /* CONFIG_SYS_FSL_DDR_INTLV_256B */
1185 done:
1186 #endif /* CONFIG_SYS_NUM_DDR_CTLRS > 1 */
1187         if ((hwconfig_sub_f("fsl_ddr", "bank_intlv", buf)) &&
1188                 (CONFIG_CHIP_SELECTS_PER_CTRL > 1)) {
1189                 /* test null first. if CONFIG_HWCONFIG is not defined,
1190                  * hwconfig_subarg_cmp_f returns non-zero */
1191                 if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv",
1192                                             "null", buf))
1193                         debug("bank interleaving disabled.\n");
1194                 else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv",
1195                                                  "cs0_cs1", buf))
1196                         popts->ba_intlv_ctl = FSL_DDR_CS0_CS1;
1197                 else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv",
1198                                                  "cs2_cs3", buf))
1199                         popts->ba_intlv_ctl = FSL_DDR_CS2_CS3;
1200                 else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv",
1201                                                  "cs0_cs1_and_cs2_cs3", buf))
1202                         popts->ba_intlv_ctl = FSL_DDR_CS0_CS1_AND_CS2_CS3;
1203                 else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv",
1204                                                  "cs0_cs1_cs2_cs3", buf))
1205                         popts->ba_intlv_ctl = FSL_DDR_CS0_CS1_CS2_CS3;
1206                 else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv",
1207                                                 "auto", buf))
1208                         popts->ba_intlv_ctl = auto_bank_intlv(pdimm);
1209                 else
1210                         printf("hwconfig has unrecognized parameter for bank_intlv.\n");
1211                 switch (popts->ba_intlv_ctl & FSL_DDR_CS0_CS1_CS2_CS3) {
1212                 case FSL_DDR_CS0_CS1_CS2_CS3:
1213 #if (CONFIG_DIMM_SLOTS_PER_CTLR == 1)
1214                         if (pdimm[0].n_ranks < 4) {
1215                                 popts->ba_intlv_ctl = 0;
1216                                 printf("Not enough bank(chip-select) for "
1217                                         "CS0+CS1+CS2+CS3 on controller %d, "
1218                                         "interleaving disabled!\n", ctrl_num);
1219                         }
1220 #elif (CONFIG_DIMM_SLOTS_PER_CTLR == 2)
1221 #ifdef CONFIG_FSL_DDR_FIRST_SLOT_QUAD_CAPABLE
1222                         if (pdimm[0].n_ranks == 4)
1223                                 break;
1224 #endif
1225                         if ((pdimm[0].n_ranks < 2) && (pdimm[1].n_ranks < 2)) {
1226                                 popts->ba_intlv_ctl = 0;
1227                                 printf("Not enough bank(chip-select) for "
1228                                         "CS0+CS1+CS2+CS3 on controller %d, "
1229                                         "interleaving disabled!\n", ctrl_num);
1230                         }
1231                         if (pdimm[0].capacity != pdimm[1].capacity) {
1232                                 popts->ba_intlv_ctl = 0;
1233                                 printf("Not identical DIMM size for "
1234                                         "CS0+CS1+CS2+CS3 on controller %d, "
1235                                         "interleaving disabled!\n", ctrl_num);
1236                         }
1237 #endif
1238                         break;
1239                 case FSL_DDR_CS0_CS1:
1240                         if (pdimm[0].n_ranks < 2) {
1241                                 popts->ba_intlv_ctl = 0;
1242                                 printf("Not enough bank(chip-select) for "
1243                                         "CS0+CS1 on controller %d, "
1244                                         "interleaving disabled!\n", ctrl_num);
1245                         }
1246                         break;
1247                 case FSL_DDR_CS2_CS3:
1248 #if (CONFIG_DIMM_SLOTS_PER_CTLR == 1)
1249                         if (pdimm[0].n_ranks < 4) {
1250                                 popts->ba_intlv_ctl = 0;
1251                                 printf("Not enough bank(chip-select) for CS2+CS3 "
1252                                         "on controller %d, interleaving disabled!\n", ctrl_num);
1253                         }
1254 #elif (CONFIG_DIMM_SLOTS_PER_CTLR == 2)
1255                         if (pdimm[1].n_ranks < 2) {
1256                                 popts->ba_intlv_ctl = 0;
1257                                 printf("Not enough bank(chip-select) for CS2+CS3 "
1258                                         "on controller %d, interleaving disabled!\n", ctrl_num);
1259                         }
1260 #endif
1261                         break;
1262                 case FSL_DDR_CS0_CS1_AND_CS2_CS3:
1263 #if (CONFIG_DIMM_SLOTS_PER_CTLR == 1)
1264                         if (pdimm[0].n_ranks < 4) {
1265                                 popts->ba_intlv_ctl = 0;
1266                                 printf("Not enough bank(CS) for CS0+CS1 and "
1267                                         "CS2+CS3 on controller %d, "
1268                                         "interleaving disabled!\n", ctrl_num);
1269                         }
1270 #elif (CONFIG_DIMM_SLOTS_PER_CTLR == 2)
1271                         if ((pdimm[0].n_ranks < 2) || (pdimm[1].n_ranks < 2)) {
1272                                 popts->ba_intlv_ctl = 0;
1273                                 printf("Not enough bank(CS) for CS0+CS1 and "
1274                                         "CS2+CS3 on controller %d, "
1275                                         "interleaving disabled!\n", ctrl_num);
1276                         }
1277 #endif
1278                         break;
1279                 default:
1280                         popts->ba_intlv_ctl = 0;
1281                         break;
1282                 }
1283         }
1284
1285         if (hwconfig_sub_f("fsl_ddr", "addr_hash", buf)) {
1286                 if (hwconfig_subarg_cmp_f("fsl_ddr", "addr_hash", "null", buf))
1287                         popts->addr_hash = 0;
1288                 else if (hwconfig_subarg_cmp_f("fsl_ddr", "addr_hash",
1289                                                "true", buf))
1290                         popts->addr_hash = 1;
1291         }
1292
1293         if (pdimm[0].n_ranks == 4)
1294                 popts->quad_rank_present = 1;
1295
1296         popts->package_3ds = pdimm->package_3ds;
1297
1298         ddr_freq = get_ddr_freq(ctrl_num) / 1000000;
1299         if (popts->registered_dimm_en) {
1300                 popts->rcw_override = 1;
1301                 popts->rcw_1 = 0x000a5a00;
1302                 if (ddr_freq <= 800)
1303                         popts->rcw_2 = 0x00000000;
1304                 else if (ddr_freq <= 1066)
1305                         popts->rcw_2 = 0x00100000;
1306                 else if (ddr_freq <= 1333)
1307                         popts->rcw_2 = 0x00200000;
1308                 else
1309                         popts->rcw_2 = 0x00300000;
1310         }
1311
1312         fsl_ddr_board_options(popts, pdimm, ctrl_num);
1313
1314         return 0;
1315 }
1316
1317 void check_interleaving_options(fsl_ddr_info_t *pinfo)
1318 {
1319         int i, j, k, check_n_ranks, intlv_invalid = 0;
1320         unsigned int check_intlv, check_n_row_addr, check_n_col_addr;
1321         unsigned long long check_rank_density;
1322         struct dimm_params_s *dimm;
1323         int first_ctrl = pinfo->first_ctrl;
1324         int last_ctrl = first_ctrl + pinfo->num_ctrls - 1;
1325
1326         /*
1327          * Check if all controllers are configured for memory
1328          * controller interleaving. Identical dimms are recommended. At least
1329          * the size, row and col address should be checked.
1330          */
1331         j = 0;
1332         check_n_ranks = pinfo->dimm_params[first_ctrl][0].n_ranks;
1333         check_rank_density = pinfo->dimm_params[first_ctrl][0].rank_density;
1334         check_n_row_addr =  pinfo->dimm_params[first_ctrl][0].n_row_addr;
1335         check_n_col_addr = pinfo->dimm_params[first_ctrl][0].n_col_addr;
1336         check_intlv = pinfo->memctl_opts[first_ctrl].memctl_interleaving_mode;
1337         for (i = first_ctrl; i <= last_ctrl; i++) {
1338                 dimm = &pinfo->dimm_params[i][0];
1339                 if (!pinfo->memctl_opts[i].memctl_interleaving) {
1340                         continue;
1341                 } else if (((check_rank_density != dimm->rank_density) ||
1342                      (check_n_ranks != dimm->n_ranks) ||
1343                      (check_n_row_addr != dimm->n_row_addr) ||
1344                      (check_n_col_addr != dimm->n_col_addr) ||
1345                      (check_intlv !=
1346                         pinfo->memctl_opts[i].memctl_interleaving_mode))){
1347                         intlv_invalid = 1;
1348                         break;
1349                 } else {
1350                         j++;
1351                 }
1352
1353         }
1354         if (intlv_invalid) {
1355                 for (i = first_ctrl; i <= last_ctrl; i++)
1356                         pinfo->memctl_opts[i].memctl_interleaving = 0;
1357                 printf("Not all DIMMs are identical. "
1358                         "Memory controller interleaving disabled.\n");
1359         } else {
1360                 switch (check_intlv) {
1361                 case FSL_DDR_256B_INTERLEAVING:
1362                 case FSL_DDR_CACHE_LINE_INTERLEAVING:
1363                 case FSL_DDR_PAGE_INTERLEAVING:
1364                 case FSL_DDR_BANK_INTERLEAVING:
1365                 case FSL_DDR_SUPERBANK_INTERLEAVING:
1366 #if (3 == CONFIG_SYS_NUM_DDR_CTLRS)
1367                                 k = 2;
1368 #else
1369                                 k = CONFIG_SYS_NUM_DDR_CTLRS;
1370 #endif
1371                         break;
1372                 case FSL_DDR_3WAY_1KB_INTERLEAVING:
1373                 case FSL_DDR_3WAY_4KB_INTERLEAVING:
1374                 case FSL_DDR_3WAY_8KB_INTERLEAVING:
1375                 case FSL_DDR_4WAY_1KB_INTERLEAVING:
1376                 case FSL_DDR_4WAY_4KB_INTERLEAVING:
1377                 case FSL_DDR_4WAY_8KB_INTERLEAVING:
1378                 default:
1379                         k = CONFIG_SYS_NUM_DDR_CTLRS;
1380                         break;
1381                 }
1382                 debug("%d of %d controllers are interleaving.\n", j, k);
1383                 if (j && (j != k)) {
1384                         for (i = first_ctrl; i <= last_ctrl; i++)
1385                                 pinfo->memctl_opts[i].memctl_interleaving = 0;
1386                         if ((last_ctrl - first_ctrl) > 1)
1387                                 puts("Not all controllers have compatible interleaving mode. All disabled.\n");
1388                 }
1389         }
1390         debug("Checking interleaving options completed\n");
1391 }
1392
1393 int fsl_use_spd(void)
1394 {
1395         int use_spd = 0;
1396
1397 #ifdef CONFIG_DDR_SPD
1398         char buffer[HWCONFIG_BUFFER_SIZE];
1399         char *buf = NULL;
1400
1401         /*
1402          * Extract hwconfig from environment since we have not properly setup
1403          * the environment but need it for ddr config params
1404          */
1405         if (env_get_f("hwconfig", buffer, sizeof(buffer)) > 0)
1406                 buf = buffer;
1407
1408         /* if hwconfig is not enabled, or "sdram" is not defined, use spd */
1409         if (hwconfig_sub_f("fsl_ddr", "sdram", buf)) {
1410                 if (hwconfig_subarg_cmp_f("fsl_ddr", "sdram", "spd", buf))
1411                         use_spd = 1;
1412                 else if (hwconfig_subarg_cmp_f("fsl_ddr", "sdram",
1413                                                "fixed", buf))
1414                         use_spd = 0;
1415                 else
1416                         use_spd = 1;
1417         } else
1418                 use_spd = 1;
1419 #endif
1420
1421         return use_spd;
1422 }