1 /* 2 * Copyright 2008-2014 Freescale Semiconductor, Inc. 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 /* 8 * Generic driver for Freescale DDR/DDR2/DDR3 memory controller. 9 * Based on code from spd_sdram.c 10 * Author: James Yang [at freescale.com] 11 */ 12 13 #include <common.h> 14 #include <fsl_ddr_sdram.h> 15 16 #include <fsl_ddr.h> 17 #include <fsl_immap.h> 18 #include <asm/io.h> 19 20 /* 21 * Determine Rtt value. 22 * 23 * This should likely be either board or controller specific. 24 * 25 * Rtt(nominal) - DDR2: 26 * 0 = Rtt disabled 27 * 1 = 75 ohm 28 * 2 = 150 ohm 29 * 3 = 50 ohm 30 * Rtt(nominal) - DDR3: 31 * 0 = Rtt disabled 32 * 1 = 60 ohm 33 * 2 = 120 ohm 34 * 3 = 40 ohm 35 * 4 = 20 ohm 36 * 5 = 30 ohm 37 * 38 * FIXME: Apparently 8641 needs a value of 2 39 * FIXME: Old code seys if 667 MHz or higher, use 3 on 8572 40 * 41 * FIXME: There was some effort down this line earlier: 42 * 43 * unsigned int i; 44 * for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL/2; i++) { 45 * if (popts->dimmslot[i].num_valid_cs 46 * && (popts->cs_local_opts[2*i].odt_rd_cfg 47 * || popts->cs_local_opts[2*i].odt_wr_cfg)) { 48 * rtt = 2; 49 * break; 50 * } 51 * } 52 */ 53 static inline int fsl_ddr_get_rtt(void) 54 { 55 int rtt; 56 57 #if defined(CONFIG_SYS_FSL_DDR1) 58 rtt = 0; 59 #elif defined(CONFIG_SYS_FSL_DDR2) 60 rtt = 3; 61 #else 62 rtt = 0; 63 #endif 64 65 return rtt; 66 } 67 68 #ifdef CONFIG_SYS_FSL_DDR4 69 /* 70 * compute CAS write latency according to DDR4 spec 71 * CWL = 9 for <= 1600MT/s 72 * 10 for <= 1866MT/s 73 * 11 for <= 2133MT/s 74 * 12 for <= 2400MT/s 75 * 14 for <= 2667MT/s 76 * 16 for <= 2933MT/s 77 * 18 for higher 78 */ 79 static inline unsigned int compute_cas_write_latency( 80 const unsigned int ctrl_num) 81 { 82 unsigned int cwl; 83 const unsigned int mclk_ps = get_memory_clk_period_ps(ctrl_num); 84 if (mclk_ps >= 1250) 85 cwl = 9; 86 else if (mclk_ps >= 1070) 87 cwl = 10; 88 else if (mclk_ps >= 935) 89 cwl = 11; 90 else if (mclk_ps >= 833) 91 cwl = 12; 92 else if (mclk_ps >= 750) 93 cwl = 14; 94 else if (mclk_ps >= 681) 95 cwl = 16; 96 else 97 cwl = 18; 98 99 return cwl; 100 } 101 #else 102 /* 103 * compute the CAS write latency according to DDR3 spec 104 * CWL = 5 if tCK >= 2.5ns 105 * 6 if 2.5ns > tCK >= 1.875ns 106 * 7 if 1.875ns > tCK >= 1.5ns 107 * 8 if 1.5ns > tCK >= 1.25ns 108 * 9 if 1.25ns > tCK >= 1.07ns 109 * 10 if 1.07ns > tCK >= 0.935ns 110 * 11 if 0.935ns > tCK >= 0.833ns 111 * 12 if 0.833ns > tCK >= 0.75ns 112 */ 113 static inline unsigned int compute_cas_write_latency( 114 const unsigned int ctrl_num) 115 { 116 unsigned int cwl; 117 const unsigned int mclk_ps = get_memory_clk_period_ps(ctrl_num); 118 119 if (mclk_ps >= 2500) 120 cwl = 5; 121 else if (mclk_ps >= 1875) 122 cwl = 6; 123 else if (mclk_ps >= 1500) 124 cwl = 7; 125 else if (mclk_ps >= 1250) 126 cwl = 8; 127 else if (mclk_ps >= 1070) 128 cwl = 9; 129 else if (mclk_ps >= 935) 130 cwl = 10; 131 else if (mclk_ps >= 833) 132 cwl = 11; 133 else if (mclk_ps >= 750) 134 cwl = 12; 135 else { 136 cwl = 12; 137 printf("Warning: CWL is out of range\n"); 138 } 139 return cwl; 140 } 141 #endif 142 143 /* Chip Select Configuration (CSn_CONFIG) */ 144 static void set_csn_config(int dimm_number, int i, fsl_ddr_cfg_regs_t *ddr, 145 const memctl_options_t *popts, 146 const dimm_params_t *dimm_params) 147 { 148 unsigned int cs_n_en = 0; /* Chip Select enable */ 149 unsigned int intlv_en = 0; /* Memory controller interleave enable */ 150 unsigned int intlv_ctl = 0; /* Interleaving control */ 151 unsigned int ap_n_en = 0; /* Chip select n auto-precharge enable */ 152 unsigned int odt_rd_cfg = 0; /* ODT for reads configuration */ 153 unsigned int odt_wr_cfg = 0; /* ODT for writes configuration */ 154 unsigned int ba_bits_cs_n = 0; /* Num of bank bits for SDRAM on CSn */ 155 unsigned int row_bits_cs_n = 0; /* Num of row bits for SDRAM on CSn */ 156 unsigned int col_bits_cs_n = 0; /* Num of ocl bits for SDRAM on CSn */ 157 int go_config = 0; 158 #ifdef CONFIG_SYS_FSL_DDR4 159 unsigned int bg_bits_cs_n = 0; /* Num of bank group bits */ 160 #else 161 unsigned int n_banks_per_sdram_device; 162 #endif 163 164 /* Compute CS_CONFIG only for existing ranks of each DIMM. */ 165 switch (i) { 166 case 0: 167 if (dimm_params[dimm_number].n_ranks > 0) { 168 go_config = 1; 169 /* These fields only available in CS0_CONFIG */ 170 if (!popts->memctl_interleaving) 171 break; 172 switch (popts->memctl_interleaving_mode) { 173 case FSL_DDR_256B_INTERLEAVING: 174 case FSL_DDR_CACHE_LINE_INTERLEAVING: 175 case FSL_DDR_PAGE_INTERLEAVING: 176 case FSL_DDR_BANK_INTERLEAVING: 177 case FSL_DDR_SUPERBANK_INTERLEAVING: 178 intlv_en = popts->memctl_interleaving; 179 intlv_ctl = popts->memctl_interleaving_mode; 180 break; 181 default: 182 break; 183 } 184 } 185 break; 186 case 1: 187 if ((dimm_number == 0 && dimm_params[0].n_ranks > 1) || \ 188 (dimm_number == 1 && dimm_params[1].n_ranks > 0)) 189 go_config = 1; 190 break; 191 case 2: 192 if ((dimm_number == 0 && dimm_params[0].n_ranks > 2) || \ 193 (dimm_number >= 1 && dimm_params[dimm_number].n_ranks > 0)) 194 go_config = 1; 195 break; 196 case 3: 197 if ((dimm_number == 0 && dimm_params[0].n_ranks > 3) || \ 198 (dimm_number == 1 && dimm_params[1].n_ranks > 1) || \ 199 (dimm_number == 3 && dimm_params[3].n_ranks > 0)) 200 go_config = 1; 201 break; 202 default: 203 break; 204 } 205 if (go_config) { 206 cs_n_en = 1; 207 ap_n_en = popts->cs_local_opts[i].auto_precharge; 208 odt_rd_cfg = popts->cs_local_opts[i].odt_rd_cfg; 209 odt_wr_cfg = popts->cs_local_opts[i].odt_wr_cfg; 210 #ifdef CONFIG_SYS_FSL_DDR4 211 ba_bits_cs_n = dimm_params[dimm_number].bank_addr_bits; 212 bg_bits_cs_n = dimm_params[dimm_number].bank_group_bits; 213 #else 214 n_banks_per_sdram_device 215 = dimm_params[dimm_number].n_banks_per_sdram_device; 216 ba_bits_cs_n = __ilog2(n_banks_per_sdram_device) - 2; 217 #endif 218 row_bits_cs_n = dimm_params[dimm_number].n_row_addr - 12; 219 col_bits_cs_n = dimm_params[dimm_number].n_col_addr - 8; 220 } 221 ddr->cs[i].config = (0 222 | ((cs_n_en & 0x1) << 31) 223 | ((intlv_en & 0x3) << 29) 224 | ((intlv_ctl & 0xf) << 24) 225 | ((ap_n_en & 0x1) << 23) 226 227 /* XXX: some implementation only have 1 bit starting at left */ 228 | ((odt_rd_cfg & 0x7) << 20) 229 230 /* XXX: Some implementation only have 1 bit starting at left */ 231 | ((odt_wr_cfg & 0x7) << 16) 232 233 | ((ba_bits_cs_n & 0x3) << 14) 234 | ((row_bits_cs_n & 0x7) << 8) 235 #ifdef CONFIG_SYS_FSL_DDR4 236 | ((bg_bits_cs_n & 0x3) << 4) 237 #endif 238 | ((col_bits_cs_n & 0x7) << 0) 239 ); 240 debug("FSLDDR: cs[%d]_config = 0x%08x\n", i,ddr->cs[i].config); 241 } 242 243 /* Chip Select Configuration 2 (CSn_CONFIG_2) */ 244 /* FIXME: 8572 */ 245 static void set_csn_config_2(int i, fsl_ddr_cfg_regs_t *ddr) 246 { 247 unsigned int pasr_cfg = 0; /* Partial array self refresh config */ 248 249 ddr->cs[i].config_2 = ((pasr_cfg & 7) << 24); 250 debug("FSLDDR: cs[%d]_config_2 = 0x%08x\n", i, ddr->cs[i].config_2); 251 } 252 253 /* -3E = 667 CL5, -25 = CL6 800, -25E = CL5 800 */ 254 255 #if !defined(CONFIG_SYS_FSL_DDR1) 256 /* 257 * Check DIMM configuration, return 2 if quad-rank or two dual-rank 258 * Return 1 if other two slots configuration. Return 0 if single slot. 259 */ 260 static inline int avoid_odt_overlap(const dimm_params_t *dimm_params) 261 { 262 #if CONFIG_DIMM_SLOTS_PER_CTLR == 1 263 if (dimm_params[0].n_ranks == 4) 264 return 2; 265 #endif 266 267 #if CONFIG_DIMM_SLOTS_PER_CTLR == 2 268 if ((dimm_params[0].n_ranks == 2) && 269 (dimm_params[1].n_ranks == 2)) 270 return 2; 271 272 #ifdef CONFIG_FSL_DDR_FIRST_SLOT_QUAD_CAPABLE 273 if (dimm_params[0].n_ranks == 4) 274 return 2; 275 #endif 276 277 if ((dimm_params[0].n_ranks != 0) && 278 (dimm_params[2].n_ranks != 0)) 279 return 1; 280 #endif 281 return 0; 282 } 283 284 /* 285 * DDR SDRAM Timing Configuration 0 (TIMING_CFG_0) 286 * 287 * Avoid writing for DDR I. The new PQ38 DDR controller 288 * dreams up non-zero default values to be backwards compatible. 289 */ 290 static void set_timing_cfg_0(const unsigned int ctrl_num, 291 fsl_ddr_cfg_regs_t *ddr, 292 const memctl_options_t *popts, 293 const dimm_params_t *dimm_params) 294 { 295 unsigned char trwt_mclk = 0; /* Read-to-write turnaround */ 296 unsigned char twrt_mclk = 0; /* Write-to-read turnaround */ 297 /* 7.5 ns on -3E; 0 means WL - CL + BL/2 + 1 */ 298 unsigned char trrt_mclk = 0; /* Read-to-read turnaround */ 299 unsigned char twwt_mclk = 0; /* Write-to-write turnaround */ 300 301 /* Active powerdown exit timing (tXARD and tXARDS). */ 302 unsigned char act_pd_exit_mclk; 303 /* Precharge powerdown exit timing (tXP). */ 304 unsigned char pre_pd_exit_mclk; 305 /* ODT powerdown exit timing (tAXPD). */ 306 unsigned char taxpd_mclk = 0; 307 /* Mode register set cycle time (tMRD). */ 308 unsigned char tmrd_mclk; 309 #if defined(CONFIG_SYS_FSL_DDR4) || defined(CONFIG_SYS_FSL_DDR3) 310 const unsigned int mclk_ps = get_memory_clk_period_ps(ctrl_num); 311 #endif 312 313 #ifdef CONFIG_SYS_FSL_DDR4 314 /* tXP=max(4nCK, 6ns) */ 315 int txp = max((int)mclk_ps * 4, 6000); /* unit=ps */ 316 trwt_mclk = 2; 317 twrt_mclk = 1; 318 act_pd_exit_mclk = picos_to_mclk(ctrl_num, txp); 319 pre_pd_exit_mclk = act_pd_exit_mclk; 320 /* 321 * MRS_CYC = max(tMRD, tMOD) 322 * tMRD = 8nCK, tMOD = max(24nCK, 15ns) 323 */ 324 tmrd_mclk = max(24U, picos_to_mclk(ctrl_num, 15000)); 325 #elif defined(CONFIG_SYS_FSL_DDR3) 326 unsigned int data_rate = get_ddr_freq(ctrl_num); 327 int txp; 328 unsigned int ip_rev; 329 int odt_overlap; 330 /* 331 * (tXARD and tXARDS). Empirical? 332 * The DDR3 spec has not tXARD, 333 * we use the tXP instead of it. 334 * tXP=max(3nCK, 7.5ns) for DDR3-800, 1066 335 * max(3nCK, 6ns) for DDR3-1333, 1600, 1866, 2133 336 * spec has not the tAXPD, we use 337 * tAXPD=1, need design to confirm. 338 */ 339 txp = max((int)mclk_ps * 3, (mclk_ps > 1540 ? 7500 : 6000)); 340 341 ip_rev = fsl_ddr_get_version(); 342 if (ip_rev >= 0x40700) { 343 /* 344 * MRS_CYC = max(tMRD, tMOD) 345 * tMRD = 4nCK (8nCK for RDIMM) 346 * tMOD = max(12nCK, 15ns) 347 */ 348 tmrd_mclk = max((unsigned int)12, 349 picos_to_mclk(ctrl_num, 15000)); 350 } else { 351 /* 352 * MRS_CYC = tMRD 353 * tMRD = 4nCK (8nCK for RDIMM) 354 */ 355 if (popts->registered_dimm_en) 356 tmrd_mclk = 8; 357 else 358 tmrd_mclk = 4; 359 } 360 361 /* set the turnaround time */ 362 363 /* 364 * for single quad-rank DIMM and two-slot DIMMs 365 * to avoid ODT overlap 366 */ 367 odt_overlap = avoid_odt_overlap(dimm_params); 368 switch (odt_overlap) { 369 case 2: 370 twwt_mclk = 2; 371 trrt_mclk = 1; 372 break; 373 case 1: 374 twwt_mclk = 1; 375 trrt_mclk = 0; 376 break; 377 default: 378 break; 379 } 380 381 /* for faster clock, need more time for data setup */ 382 trwt_mclk = (data_rate/1000000 > 1800) ? 2 : 1; 383 384 if ((data_rate/1000000 > 1150) || (popts->memctl_interleaving)) 385 twrt_mclk = 1; 386 387 if (popts->dynamic_power == 0) { /* powerdown is not used */ 388 act_pd_exit_mclk = 1; 389 pre_pd_exit_mclk = 1; 390 taxpd_mclk = 1; 391 } else { 392 /* act_pd_exit_mclk = tXARD, see above */ 393 act_pd_exit_mclk = picos_to_mclk(ctrl_num, txp); 394 /* Mode register MR0[A12] is '1' - fast exit */ 395 pre_pd_exit_mclk = act_pd_exit_mclk; 396 taxpd_mclk = 1; 397 } 398 #else /* CONFIG_SYS_FSL_DDR2 */ 399 /* 400 * (tXARD and tXARDS). Empirical? 401 * tXARD = 2 for DDR2 402 * tXP=2 403 * tAXPD=8 404 */ 405 act_pd_exit_mclk = 2; 406 pre_pd_exit_mclk = 2; 407 taxpd_mclk = 8; 408 tmrd_mclk = 2; 409 #endif 410 411 if (popts->trwt_override) 412 trwt_mclk = popts->trwt; 413 414 ddr->timing_cfg_0 = (0 415 | ((trwt_mclk & 0x3) << 30) /* RWT */ 416 | ((twrt_mclk & 0x3) << 28) /* WRT */ 417 | ((trrt_mclk & 0x3) << 26) /* RRT */ 418 | ((twwt_mclk & 0x3) << 24) /* WWT */ 419 | ((act_pd_exit_mclk & 0xf) << 20) /* ACT_PD_EXIT */ 420 | ((pre_pd_exit_mclk & 0xF) << 16) /* PRE_PD_EXIT */ 421 | ((taxpd_mclk & 0xf) << 8) /* ODT_PD_EXIT */ 422 | ((tmrd_mclk & 0x1f) << 0) /* MRS_CYC */ 423 ); 424 debug("FSLDDR: timing_cfg_0 = 0x%08x\n", ddr->timing_cfg_0); 425 } 426 #endif /* !defined(CONFIG_SYS_FSL_DDR1) */ 427 428 /* DDR SDRAM Timing Configuration 3 (TIMING_CFG_3) */ 429 static void set_timing_cfg_3(const unsigned int ctrl_num, 430 fsl_ddr_cfg_regs_t *ddr, 431 const memctl_options_t *popts, 432 const common_timing_params_t *common_dimm, 433 unsigned int cas_latency, 434 unsigned int additive_latency) 435 { 436 /* Extended precharge to activate interval (tRP) */ 437 unsigned int ext_pretoact = 0; 438 /* Extended Activate to precharge interval (tRAS) */ 439 unsigned int ext_acttopre = 0; 440 /* Extended activate to read/write interval (tRCD) */ 441 unsigned int ext_acttorw = 0; 442 /* Extended refresh recovery time (tRFC) */ 443 unsigned int ext_refrec; 444 /* Extended MCAS latency from READ cmd */ 445 unsigned int ext_caslat = 0; 446 /* Extended additive latency */ 447 unsigned int ext_add_lat = 0; 448 /* Extended last data to precharge interval (tWR) */ 449 unsigned int ext_wrrec = 0; 450 /* Control Adjust */ 451 unsigned int cntl_adj = 0; 452 453 ext_pretoact = picos_to_mclk(ctrl_num, common_dimm->trp_ps) >> 4; 454 ext_acttopre = picos_to_mclk(ctrl_num, common_dimm->tras_ps) >> 4; 455 ext_acttorw = picos_to_mclk(ctrl_num, common_dimm->trcd_ps) >> 4; 456 ext_caslat = (2 * cas_latency - 1) >> 4; 457 ext_add_lat = additive_latency >> 4; 458 #ifdef CONFIG_SYS_FSL_DDR4 459 ext_refrec = (picos_to_mclk(ctrl_num, common_dimm->trfc1_ps) - 8) >> 4; 460 #else 461 ext_refrec = (picos_to_mclk(ctrl_num, common_dimm->trfc_ps) - 8) >> 4; 462 /* ext_wrrec only deals with 16 clock and above, or 14 with OTF */ 463 #endif 464 ext_wrrec = (picos_to_mclk(ctrl_num, common_dimm->twr_ps) + 465 (popts->otf_burst_chop_en ? 2 : 0)) >> 4; 466 467 ddr->timing_cfg_3 = (0 468 | ((ext_pretoact & 0x1) << 28) 469 | ((ext_acttopre & 0x3) << 24) 470 | ((ext_acttorw & 0x1) << 22) 471 | ((ext_refrec & 0x1F) << 16) 472 | ((ext_caslat & 0x3) << 12) 473 | ((ext_add_lat & 0x1) << 10) 474 | ((ext_wrrec & 0x1) << 8) 475 | ((cntl_adj & 0x7) << 0) 476 ); 477 debug("FSLDDR: timing_cfg_3 = 0x%08x\n", ddr->timing_cfg_3); 478 } 479 480 /* DDR SDRAM Timing Configuration 1 (TIMING_CFG_1) */ 481 static void set_timing_cfg_1(const unsigned int ctrl_num, 482 fsl_ddr_cfg_regs_t *ddr, 483 const memctl_options_t *popts, 484 const common_timing_params_t *common_dimm, 485 unsigned int cas_latency) 486 { 487 /* Precharge-to-activate interval (tRP) */ 488 unsigned char pretoact_mclk; 489 /* Activate to precharge interval (tRAS) */ 490 unsigned char acttopre_mclk; 491 /* Activate to read/write interval (tRCD) */ 492 unsigned char acttorw_mclk; 493 /* CASLAT */ 494 unsigned char caslat_ctrl; 495 /* Refresh recovery time (tRFC) ; trfc_low */ 496 unsigned char refrec_ctrl; 497 /* Last data to precharge minimum interval (tWR) */ 498 unsigned char wrrec_mclk; 499 /* Activate-to-activate interval (tRRD) */ 500 unsigned char acttoact_mclk; 501 /* Last write data pair to read command issue interval (tWTR) */ 502 unsigned char wrtord_mclk; 503 #ifdef CONFIG_SYS_FSL_DDR4 504 /* DDR4 supports 10, 12, 14, 16, 18, 20, 24 */ 505 static const u8 wrrec_table[] = { 506 10, 10, 10, 10, 10, 507 10, 10, 10, 10, 10, 508 12, 12, 14, 14, 16, 509 16, 18, 18, 20, 20, 510 24, 24, 24, 24}; 511 #else 512 /* DDR_SDRAM_MODE doesn't support 9,11,13,15 */ 513 static const u8 wrrec_table[] = { 514 1, 2, 3, 4, 5, 6, 7, 8, 10, 10, 12, 12, 14, 14, 0, 0}; 515 #endif 516 517 pretoact_mclk = picos_to_mclk(ctrl_num, common_dimm->trp_ps); 518 acttopre_mclk = picos_to_mclk(ctrl_num, common_dimm->tras_ps); 519 acttorw_mclk = picos_to_mclk(ctrl_num, common_dimm->trcd_ps); 520 521 /* 522 * Translate CAS Latency to a DDR controller field value: 523 * 524 * CAS Lat DDR I DDR II Ctrl 525 * Clocks SPD Bit SPD Bit Value 526 * ------- ------- ------- ----- 527 * 1.0 0 0001 528 * 1.5 1 0010 529 * 2.0 2 2 0011 530 * 2.5 3 0100 531 * 3.0 4 3 0101 532 * 3.5 5 0110 533 * 4.0 4 0111 534 * 4.5 1000 535 * 5.0 5 1001 536 */ 537 #if defined(CONFIG_SYS_FSL_DDR1) 538 caslat_ctrl = (cas_latency + 1) & 0x07; 539 #elif defined(CONFIG_SYS_FSL_DDR2) 540 caslat_ctrl = 2 * cas_latency - 1; 541 #else 542 /* 543 * if the CAS latency more than 8 cycle, 544 * we need set extend bit for it at 545 * TIMING_CFG_3[EXT_CASLAT] 546 */ 547 if (fsl_ddr_get_version() <= 0x40400) 548 caslat_ctrl = 2 * cas_latency - 1; 549 else 550 caslat_ctrl = (cas_latency - 1) << 1; 551 #endif 552 553 #ifdef CONFIG_SYS_FSL_DDR4 554 refrec_ctrl = picos_to_mclk(ctrl_num, common_dimm->trfc1_ps) - 8; 555 wrrec_mclk = picos_to_mclk(ctrl_num, common_dimm->twr_ps); 556 acttoact_mclk = max(picos_to_mclk(ctrl_num, common_dimm->trrds_ps), 4U); 557 wrtord_mclk = max(2U, picos_to_mclk(ctrl_num, 2500)); 558 if ((wrrec_mclk < 1) || (wrrec_mclk > 24)) 559 printf("Error: WRREC doesn't support %d clocks\n", wrrec_mclk); 560 else 561 wrrec_mclk = wrrec_table[wrrec_mclk - 1]; 562 #else 563 refrec_ctrl = picos_to_mclk(ctrl_num, common_dimm->trfc_ps) - 8; 564 wrrec_mclk = picos_to_mclk(ctrl_num, common_dimm->twr_ps); 565 acttoact_mclk = picos_to_mclk(ctrl_num, common_dimm->trrd_ps); 566 wrtord_mclk = picos_to_mclk(ctrl_num, common_dimm->twtr_ps); 567 if ((wrrec_mclk < 1) || (wrrec_mclk > 16)) 568 printf("Error: WRREC doesn't support %d clocks\n", wrrec_mclk); 569 else 570 wrrec_mclk = wrrec_table[wrrec_mclk - 1]; 571 #endif 572 if (popts->otf_burst_chop_en) 573 wrrec_mclk += 2; 574 575 /* 576 * JEDEC has min requirement for tRRD 577 */ 578 #if defined(CONFIG_SYS_FSL_DDR3) 579 if (acttoact_mclk < 4) 580 acttoact_mclk = 4; 581 #endif 582 /* 583 * JEDEC has some min requirements for tWTR 584 */ 585 #if defined(CONFIG_SYS_FSL_DDR2) 586 if (wrtord_mclk < 2) 587 wrtord_mclk = 2; 588 #elif defined(CONFIG_SYS_FSL_DDR3) 589 if (wrtord_mclk < 4) 590 wrtord_mclk = 4; 591 #endif 592 if (popts->otf_burst_chop_en) 593 wrtord_mclk += 2; 594 595 ddr->timing_cfg_1 = (0 596 | ((pretoact_mclk & 0x0F) << 28) 597 | ((acttopre_mclk & 0x0F) << 24) 598 | ((acttorw_mclk & 0xF) << 20) 599 | ((caslat_ctrl & 0xF) << 16) 600 | ((refrec_ctrl & 0xF) << 12) 601 | ((wrrec_mclk & 0x0F) << 8) 602 | ((acttoact_mclk & 0x0F) << 4) 603 | ((wrtord_mclk & 0x0F) << 0) 604 ); 605 debug("FSLDDR: timing_cfg_1 = 0x%08x\n", ddr->timing_cfg_1); 606 } 607 608 /* DDR SDRAM Timing Configuration 2 (TIMING_CFG_2) */ 609 static void set_timing_cfg_2(const unsigned int ctrl_num, 610 fsl_ddr_cfg_regs_t *ddr, 611 const memctl_options_t *popts, 612 const common_timing_params_t *common_dimm, 613 unsigned int cas_latency, 614 unsigned int additive_latency) 615 { 616 /* Additive latency */ 617 unsigned char add_lat_mclk; 618 /* CAS-to-preamble override */ 619 unsigned short cpo; 620 /* Write latency */ 621 unsigned char wr_lat; 622 /* Read to precharge (tRTP) */ 623 unsigned char rd_to_pre; 624 /* Write command to write data strobe timing adjustment */ 625 unsigned char wr_data_delay; 626 /* Minimum CKE pulse width (tCKE) */ 627 unsigned char cke_pls; 628 /* Window for four activates (tFAW) */ 629 unsigned short four_act; 630 #ifdef CONFIG_SYS_FSL_DDR3 631 const unsigned int mclk_ps = get_memory_clk_period_ps(ctrl_num); 632 #endif 633 634 /* FIXME add check that this must be less than acttorw_mclk */ 635 add_lat_mclk = additive_latency; 636 cpo = popts->cpo_override; 637 638 #if defined(CONFIG_SYS_FSL_DDR1) 639 /* 640 * This is a lie. It should really be 1, but if it is 641 * set to 1, bits overlap into the old controller's 642 * otherwise unused ACSM field. If we leave it 0, then 643 * the HW will magically treat it as 1 for DDR 1. Oh Yea. 644 */ 645 wr_lat = 0; 646 #elif defined(CONFIG_SYS_FSL_DDR2) 647 wr_lat = cas_latency - 1; 648 #else 649 wr_lat = compute_cas_write_latency(ctrl_num); 650 #endif 651 652 #ifdef CONFIG_SYS_FSL_DDR4 653 rd_to_pre = picos_to_mclk(ctrl_num, 7500); 654 #else 655 rd_to_pre = picos_to_mclk(ctrl_num, common_dimm->trtp_ps); 656 #endif 657 /* 658 * JEDEC has some min requirements for tRTP 659 */ 660 #if defined(CONFIG_SYS_FSL_DDR2) 661 if (rd_to_pre < 2) 662 rd_to_pre = 2; 663 #elif defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4) 664 if (rd_to_pre < 4) 665 rd_to_pre = 4; 666 #endif 667 if (popts->otf_burst_chop_en) 668 rd_to_pre += 2; /* according to UM */ 669 670 wr_data_delay = popts->write_data_delay; 671 #ifdef CONFIG_SYS_FSL_DDR4 672 cpo = 0; 673 cke_pls = max(3U, picos_to_mclk(ctrl_num, 5000)); 674 #elif defined(CONFIG_SYS_FSL_DDR3) 675 /* 676 * cke pulse = max(3nCK, 7.5ns) for DDR3-800 677 * max(3nCK, 5.625ns) for DDR3-1066, 1333 678 * max(3nCK, 5ns) for DDR3-1600, 1866, 2133 679 */ 680 cke_pls = max(3U, picos_to_mclk(ctrl_num, mclk_ps > 1870 ? 7500 : 681 (mclk_ps > 1245 ? 5625 : 5000))); 682 #else 683 cke_pls = FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR; 684 #endif 685 four_act = picos_to_mclk(ctrl_num, 686 popts->tfaw_window_four_activates_ps); 687 688 ddr->timing_cfg_2 = (0 689 | ((add_lat_mclk & 0xf) << 28) 690 | ((cpo & 0x1f) << 23) 691 | ((wr_lat & 0xf) << 19) 692 | ((wr_lat & 0x10) << 14) 693 | ((rd_to_pre & RD_TO_PRE_MASK) << RD_TO_PRE_SHIFT) 694 | ((wr_data_delay & WR_DATA_DELAY_MASK) << WR_DATA_DELAY_SHIFT) 695 | ((cke_pls & 0x7) << 6) 696 | ((four_act & 0x3f) << 0) 697 ); 698 debug("FSLDDR: timing_cfg_2 = 0x%08x\n", ddr->timing_cfg_2); 699 } 700 701 /* DDR SDRAM Register Control Word */ 702 static void set_ddr_sdram_rcw(fsl_ddr_cfg_regs_t *ddr, 703 const memctl_options_t *popts, 704 const common_timing_params_t *common_dimm) 705 { 706 if (common_dimm->all_dimms_registered && 707 !common_dimm->all_dimms_unbuffered) { 708 if (popts->rcw_override) { 709 ddr->ddr_sdram_rcw_1 = popts->rcw_1; 710 ddr->ddr_sdram_rcw_2 = popts->rcw_2; 711 } else { 712 ddr->ddr_sdram_rcw_1 = 713 common_dimm->rcw[0] << 28 | \ 714 common_dimm->rcw[1] << 24 | \ 715 common_dimm->rcw[2] << 20 | \ 716 common_dimm->rcw[3] << 16 | \ 717 common_dimm->rcw[4] << 12 | \ 718 common_dimm->rcw[5] << 8 | \ 719 common_dimm->rcw[6] << 4 | \ 720 common_dimm->rcw[7]; 721 ddr->ddr_sdram_rcw_2 = 722 common_dimm->rcw[8] << 28 | \ 723 common_dimm->rcw[9] << 24 | \ 724 common_dimm->rcw[10] << 20 | \ 725 common_dimm->rcw[11] << 16 | \ 726 common_dimm->rcw[12] << 12 | \ 727 common_dimm->rcw[13] << 8 | \ 728 common_dimm->rcw[14] << 4 | \ 729 common_dimm->rcw[15]; 730 } 731 debug("FSLDDR: ddr_sdram_rcw_1 = 0x%08x\n", ddr->ddr_sdram_rcw_1); 732 debug("FSLDDR: ddr_sdram_rcw_2 = 0x%08x\n", ddr->ddr_sdram_rcw_2); 733 } 734 } 735 736 /* DDR SDRAM control configuration (DDR_SDRAM_CFG) */ 737 static void set_ddr_sdram_cfg(fsl_ddr_cfg_regs_t *ddr, 738 const memctl_options_t *popts, 739 const common_timing_params_t *common_dimm) 740 { 741 unsigned int mem_en; /* DDR SDRAM interface logic enable */ 742 unsigned int sren; /* Self refresh enable (during sleep) */ 743 unsigned int ecc_en; /* ECC enable. */ 744 unsigned int rd_en; /* Registered DIMM enable */ 745 unsigned int sdram_type; /* Type of SDRAM */ 746 unsigned int dyn_pwr; /* Dynamic power management mode */ 747 unsigned int dbw; /* DRAM dta bus width */ 748 unsigned int eight_be = 0; /* 8-beat burst enable, DDR2 is zero */ 749 unsigned int ncap = 0; /* Non-concurrent auto-precharge */ 750 unsigned int threet_en; /* Enable 3T timing */ 751 unsigned int twot_en; /* Enable 2T timing */ 752 unsigned int ba_intlv_ctl; /* Bank (CS) interleaving control */ 753 unsigned int x32_en = 0; /* x32 enable */ 754 unsigned int pchb8 = 0; /* precharge bit 8 enable */ 755 unsigned int hse; /* Global half strength override */ 756 unsigned int acc_ecc_en = 0; /* Accumulated ECC enable */ 757 unsigned int mem_halt = 0; /* memory controller halt */ 758 unsigned int bi = 0; /* Bypass initialization */ 759 760 mem_en = 1; 761 sren = popts->self_refresh_in_sleep; 762 if (common_dimm->all_dimms_ecc_capable) { 763 /* Allow setting of ECC only if all DIMMs are ECC. */ 764 ecc_en = popts->ecc_mode; 765 } else { 766 ecc_en = 0; 767 } 768 769 if (common_dimm->all_dimms_registered && 770 !common_dimm->all_dimms_unbuffered) { 771 rd_en = 1; 772 twot_en = 0; 773 } else { 774 rd_en = 0; 775 twot_en = popts->twot_en; 776 } 777 778 sdram_type = CONFIG_FSL_SDRAM_TYPE; 779 780 dyn_pwr = popts->dynamic_power; 781 dbw = popts->data_bus_width; 782 /* 8-beat burst enable DDR-III case 783 * we must clear it when use the on-the-fly mode, 784 * must set it when use the 32-bits bus mode. 785 */ 786 if ((sdram_type == SDRAM_TYPE_DDR3) || 787 (sdram_type == SDRAM_TYPE_DDR4)) { 788 if (popts->burst_length == DDR_BL8) 789 eight_be = 1; 790 if (popts->burst_length == DDR_OTF) 791 eight_be = 0; 792 if (dbw == 0x1) 793 eight_be = 1; 794 } 795 796 threet_en = popts->threet_en; 797 ba_intlv_ctl = popts->ba_intlv_ctl; 798 hse = popts->half_strength_driver_enable; 799 800 /* set when ddr bus width < 64 */ 801 acc_ecc_en = (dbw != 0 && ecc_en == 1) ? 1 : 0; 802 803 ddr->ddr_sdram_cfg = (0 804 | ((mem_en & 0x1) << 31) 805 | ((sren & 0x1) << 30) 806 | ((ecc_en & 0x1) << 29) 807 | ((rd_en & 0x1) << 28) 808 | ((sdram_type & 0x7) << 24) 809 | ((dyn_pwr & 0x1) << 21) 810 | ((dbw & 0x3) << 19) 811 | ((eight_be & 0x1) << 18) 812 | ((ncap & 0x1) << 17) 813 | ((threet_en & 0x1) << 16) 814 | ((twot_en & 0x1) << 15) 815 | ((ba_intlv_ctl & 0x7F) << 8) 816 | ((x32_en & 0x1) << 5) 817 | ((pchb8 & 0x1) << 4) 818 | ((hse & 0x1) << 3) 819 | ((acc_ecc_en & 0x1) << 2) 820 | ((mem_halt & 0x1) << 1) 821 | ((bi & 0x1) << 0) 822 ); 823 debug("FSLDDR: ddr_sdram_cfg = 0x%08x\n", ddr->ddr_sdram_cfg); 824 } 825 826 /* DDR SDRAM control configuration 2 (DDR_SDRAM_CFG_2) */ 827 static void set_ddr_sdram_cfg_2(const unsigned int ctrl_num, 828 fsl_ddr_cfg_regs_t *ddr, 829 const memctl_options_t *popts, 830 const unsigned int unq_mrs_en) 831 { 832 unsigned int frc_sr = 0; /* Force self refresh */ 833 unsigned int sr_ie = 0; /* Self-refresh interrupt enable */ 834 unsigned int odt_cfg = 0; /* ODT configuration */ 835 unsigned int num_pr; /* Number of posted refreshes */ 836 unsigned int slow = 0; /* DDR will be run less than 1250 */ 837 unsigned int x4_en = 0; /* x4 DRAM enable */ 838 unsigned int obc_cfg; /* On-The-Fly Burst Chop Cfg */ 839 unsigned int ap_en; /* Address Parity Enable */ 840 unsigned int d_init; /* DRAM data initialization */ 841 unsigned int rcw_en = 0; /* Register Control Word Enable */ 842 unsigned int md_en = 0; /* Mirrored DIMM Enable */ 843 unsigned int qd_en = 0; /* quad-rank DIMM Enable */ 844 int i; 845 #ifndef CONFIG_SYS_FSL_DDR4 846 unsigned int dll_rst_dis = 1; /* DLL reset disable */ 847 unsigned int dqs_cfg; /* DQS configuration */ 848 849 dqs_cfg = popts->dqs_config; 850 #endif 851 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 852 if (popts->cs_local_opts[i].odt_rd_cfg 853 || popts->cs_local_opts[i].odt_wr_cfg) { 854 odt_cfg = SDRAM_CFG2_ODT_ONLY_READ; 855 break; 856 } 857 } 858 859 num_pr = 1; /* Make this configurable */ 860 861 /* 862 * 8572 manual says 863 * {TIMING_CFG_1[PRETOACT] 864 * + [DDR_SDRAM_CFG_2[NUM_PR] 865 * * ({EXT_REFREC || REFREC} + 8 + 2)]} 866 * << DDR_SDRAM_INTERVAL[REFINT] 867 */ 868 #if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4) 869 obc_cfg = popts->otf_burst_chop_en; 870 #else 871 obc_cfg = 0; 872 #endif 873 874 #if (CONFIG_SYS_FSL_DDR_VER >= FSL_DDR_VER_4_7) 875 slow = get_ddr_freq(ctrl_num) < 1249000000; 876 #endif 877 878 if (popts->registered_dimm_en) { 879 rcw_en = 1; 880 ap_en = popts->ap_en; 881 } else { 882 ap_en = 0; 883 } 884 885 x4_en = popts->x4_en ? 1 : 0; 886 887 #if defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER) 888 /* Use the DDR controller to auto initialize memory. */ 889 d_init = popts->ecc_init_using_memctl; 890 ddr->ddr_data_init = CONFIG_MEM_INIT_VALUE; 891 debug("DDR: ddr_data_init = 0x%08x\n", ddr->ddr_data_init); 892 #else 893 /* Memory will be initialized via DMA, or not at all. */ 894 d_init = 0; 895 #endif 896 897 #if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4) 898 md_en = popts->mirrored_dimm; 899 #endif 900 qd_en = popts->quad_rank_present ? 1 : 0; 901 ddr->ddr_sdram_cfg_2 = (0 902 | ((frc_sr & 0x1) << 31) 903 | ((sr_ie & 0x1) << 30) 904 #ifndef CONFIG_SYS_FSL_DDR4 905 | ((dll_rst_dis & 0x1) << 29) 906 | ((dqs_cfg & 0x3) << 26) 907 #endif 908 | ((odt_cfg & 0x3) << 21) 909 | ((num_pr & 0xf) << 12) 910 | ((slow & 1) << 11) 911 | (x4_en << 10) 912 | (qd_en << 9) 913 | (unq_mrs_en << 8) 914 | ((obc_cfg & 0x1) << 6) 915 | ((ap_en & 0x1) << 5) 916 | ((d_init & 0x1) << 4) 917 | ((rcw_en & 0x1) << 2) 918 | ((md_en & 0x1) << 0) 919 ); 920 debug("FSLDDR: ddr_sdram_cfg_2 = 0x%08x\n", ddr->ddr_sdram_cfg_2); 921 } 922 923 #ifdef CONFIG_SYS_FSL_DDR4 924 /* DDR SDRAM Mode configuration 2 (DDR_SDRAM_MODE_2) */ 925 static void set_ddr_sdram_mode_2(const unsigned int ctrl_num, 926 fsl_ddr_cfg_regs_t *ddr, 927 const memctl_options_t *popts, 928 const common_timing_params_t *common_dimm, 929 const unsigned int unq_mrs_en) 930 { 931 unsigned short esdmode2 = 0; /* Extended SDRAM mode 2 */ 932 unsigned short esdmode3 = 0; /* Extended SDRAM mode 3 */ 933 int i; 934 unsigned int wr_crc = 0; /* Disable */ 935 unsigned int rtt_wr = 0; /* Rtt_WR - dynamic ODT off */ 936 unsigned int srt = 0; /* self-refresh temerature, normal range */ 937 unsigned int cwl = compute_cas_write_latency(ctrl_num) - 9; 938 unsigned int mpr = 0; /* serial */ 939 unsigned int wc_lat; 940 const unsigned int mclk_ps = get_memory_clk_period_ps(ctrl_num); 941 942 if (popts->rtt_override) 943 rtt_wr = popts->rtt_wr_override_value; 944 else 945 rtt_wr = popts->cs_local_opts[0].odt_rtt_wr; 946 947 if (common_dimm->extended_op_srt) 948 srt = common_dimm->extended_op_srt; 949 950 esdmode2 = (0 951 | ((wr_crc & 0x1) << 12) 952 | ((rtt_wr & 0x3) << 9) 953 | ((srt & 0x3) << 6) 954 | ((cwl & 0x7) << 3)); 955 956 if (mclk_ps >= 1250) 957 wc_lat = 0; 958 else if (mclk_ps >= 833) 959 wc_lat = 1; 960 else 961 wc_lat = 2; 962 963 esdmode3 = (0 964 | ((mpr & 0x3) << 11) 965 | ((wc_lat & 0x3) << 9)); 966 967 ddr->ddr_sdram_mode_2 = (0 968 | ((esdmode2 & 0xFFFF) << 16) 969 | ((esdmode3 & 0xFFFF) << 0) 970 ); 971 debug("FSLDDR: ddr_sdram_mode_2 = 0x%08x\n", ddr->ddr_sdram_mode_2); 972 973 if (unq_mrs_en) { /* unique mode registers are supported */ 974 for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 975 if (popts->rtt_override) 976 rtt_wr = popts->rtt_wr_override_value; 977 else 978 rtt_wr = popts->cs_local_opts[i].odt_rtt_wr; 979 980 esdmode2 &= 0xF9FF; /* clear bit 10, 9 */ 981 esdmode2 |= (rtt_wr & 0x3) << 9; 982 switch (i) { 983 case 1: 984 ddr->ddr_sdram_mode_4 = (0 985 | ((esdmode2 & 0xFFFF) << 16) 986 | ((esdmode3 & 0xFFFF) << 0) 987 ); 988 break; 989 case 2: 990 ddr->ddr_sdram_mode_6 = (0 991 | ((esdmode2 & 0xFFFF) << 16) 992 | ((esdmode3 & 0xFFFF) << 0) 993 ); 994 break; 995 case 3: 996 ddr->ddr_sdram_mode_8 = (0 997 | ((esdmode2 & 0xFFFF) << 16) 998 | ((esdmode3 & 0xFFFF) << 0) 999 ); 1000 break; 1001 } 1002 } 1003 debug("FSLDDR: ddr_sdram_mode_4 = 0x%08x\n", 1004 ddr->ddr_sdram_mode_4); 1005 debug("FSLDDR: ddr_sdram_mode_6 = 0x%08x\n", 1006 ddr->ddr_sdram_mode_6); 1007 debug("FSLDDR: ddr_sdram_mode_8 = 0x%08x\n", 1008 ddr->ddr_sdram_mode_8); 1009 } 1010 } 1011 #elif defined(CONFIG_SYS_FSL_DDR3) 1012 /* DDR SDRAM Mode configuration 2 (DDR_SDRAM_MODE_2) */ 1013 static void set_ddr_sdram_mode_2(const unsigned int ctrl_num, 1014 fsl_ddr_cfg_regs_t *ddr, 1015 const memctl_options_t *popts, 1016 const common_timing_params_t *common_dimm, 1017 const unsigned int unq_mrs_en) 1018 { 1019 unsigned short esdmode2 = 0; /* Extended SDRAM mode 2 */ 1020 unsigned short esdmode3 = 0; /* Extended SDRAM mode 3 */ 1021 int i; 1022 unsigned int rtt_wr = 0; /* Rtt_WR - dynamic ODT off */ 1023 unsigned int srt = 0; /* self-refresh temerature, normal range */ 1024 unsigned int asr = 0; /* auto self-refresh disable */ 1025 unsigned int cwl = compute_cas_write_latency(ctrl_num) - 5; 1026 unsigned int pasr = 0; /* partial array self refresh disable */ 1027 1028 if (popts->rtt_override) 1029 rtt_wr = popts->rtt_wr_override_value; 1030 else 1031 rtt_wr = popts->cs_local_opts[0].odt_rtt_wr; 1032 1033 if (common_dimm->extended_op_srt) 1034 srt = common_dimm->extended_op_srt; 1035 1036 esdmode2 = (0 1037 | ((rtt_wr & 0x3) << 9) 1038 | ((srt & 0x1) << 7) 1039 | ((asr & 0x1) << 6) 1040 | ((cwl & 0x7) << 3) 1041 | ((pasr & 0x7) << 0)); 1042 ddr->ddr_sdram_mode_2 = (0 1043 | ((esdmode2 & 0xFFFF) << 16) 1044 | ((esdmode3 & 0xFFFF) << 0) 1045 ); 1046 debug("FSLDDR: ddr_sdram_mode_2 = 0x%08x\n", ddr->ddr_sdram_mode_2); 1047 1048 if (unq_mrs_en) { /* unique mode registers are supported */ 1049 for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 1050 if (popts->rtt_override) 1051 rtt_wr = popts->rtt_wr_override_value; 1052 else 1053 rtt_wr = popts->cs_local_opts[i].odt_rtt_wr; 1054 1055 esdmode2 &= 0xF9FF; /* clear bit 10, 9 */ 1056 esdmode2 |= (rtt_wr & 0x3) << 9; 1057 switch (i) { 1058 case 1: 1059 ddr->ddr_sdram_mode_4 = (0 1060 | ((esdmode2 & 0xFFFF) << 16) 1061 | ((esdmode3 & 0xFFFF) << 0) 1062 ); 1063 break; 1064 case 2: 1065 ddr->ddr_sdram_mode_6 = (0 1066 | ((esdmode2 & 0xFFFF) << 16) 1067 | ((esdmode3 & 0xFFFF) << 0) 1068 ); 1069 break; 1070 case 3: 1071 ddr->ddr_sdram_mode_8 = (0 1072 | ((esdmode2 & 0xFFFF) << 16) 1073 | ((esdmode3 & 0xFFFF) << 0) 1074 ); 1075 break; 1076 } 1077 } 1078 debug("FSLDDR: ddr_sdram_mode_4 = 0x%08x\n", 1079 ddr->ddr_sdram_mode_4); 1080 debug("FSLDDR: ddr_sdram_mode_6 = 0x%08x\n", 1081 ddr->ddr_sdram_mode_6); 1082 debug("FSLDDR: ddr_sdram_mode_8 = 0x%08x\n", 1083 ddr->ddr_sdram_mode_8); 1084 } 1085 } 1086 1087 #else /* for DDR2 and DDR1 */ 1088 /* DDR SDRAM Mode configuration 2 (DDR_SDRAM_MODE_2) */ 1089 static void set_ddr_sdram_mode_2(const unsigned int ctrl_num, 1090 fsl_ddr_cfg_regs_t *ddr, 1091 const memctl_options_t *popts, 1092 const common_timing_params_t *common_dimm, 1093 const unsigned int unq_mrs_en) 1094 { 1095 unsigned short esdmode2 = 0; /* Extended SDRAM mode 2 */ 1096 unsigned short esdmode3 = 0; /* Extended SDRAM mode 3 */ 1097 1098 ddr->ddr_sdram_mode_2 = (0 1099 | ((esdmode2 & 0xFFFF) << 16) 1100 | ((esdmode3 & 0xFFFF) << 0) 1101 ); 1102 debug("FSLDDR: ddr_sdram_mode_2 = 0x%08x\n", ddr->ddr_sdram_mode_2); 1103 } 1104 #endif 1105 1106 #ifdef CONFIG_SYS_FSL_DDR4 1107 /* DDR SDRAM Mode configuration 9 (DDR_SDRAM_MODE_9) */ 1108 static void set_ddr_sdram_mode_9(fsl_ddr_cfg_regs_t *ddr, 1109 const memctl_options_t *popts, 1110 const common_timing_params_t *common_dimm, 1111 const unsigned int unq_mrs_en) 1112 { 1113 int i; 1114 unsigned short esdmode4 = 0; /* Extended SDRAM mode 4 */ 1115 unsigned short esdmode5; /* Extended SDRAM mode 5 */ 1116 1117 esdmode5 = 0x00000400; /* Data mask enabled */ 1118 1119 ddr->ddr_sdram_mode_9 = (0 1120 | ((esdmode4 & 0xffff) << 16) 1121 | ((esdmode5 & 0xffff) << 0) 1122 ); 1123 debug("FSLDDR: ddr_sdram_mode_9) = 0x%08x\n", ddr->ddr_sdram_mode_9); 1124 if (unq_mrs_en) { /* unique mode registers are supported */ 1125 for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 1126 switch (i) { 1127 case 1: 1128 ddr->ddr_sdram_mode_11 = (0 1129 | ((esdmode4 & 0xFFFF) << 16) 1130 | ((esdmode5 & 0xFFFF) << 0) 1131 ); 1132 break; 1133 case 2: 1134 ddr->ddr_sdram_mode_13 = (0 1135 | ((esdmode4 & 0xFFFF) << 16) 1136 | ((esdmode5 & 0xFFFF) << 0) 1137 ); 1138 break; 1139 case 3: 1140 ddr->ddr_sdram_mode_15 = (0 1141 | ((esdmode4 & 0xFFFF) << 16) 1142 | ((esdmode5 & 0xFFFF) << 0) 1143 ); 1144 break; 1145 } 1146 } 1147 debug("FSLDDR: ddr_sdram_mode_11 = 0x%08x\n", 1148 ddr->ddr_sdram_mode_11); 1149 debug("FSLDDR: ddr_sdram_mode_13 = 0x%08x\n", 1150 ddr->ddr_sdram_mode_13); 1151 debug("FSLDDR: ddr_sdram_mode_15 = 0x%08x\n", 1152 ddr->ddr_sdram_mode_15); 1153 } 1154 } 1155 1156 /* DDR SDRAM Mode configuration 10 (DDR_SDRAM_MODE_10) */ 1157 static void set_ddr_sdram_mode_10(const unsigned int ctrl_num, 1158 fsl_ddr_cfg_regs_t *ddr, 1159 const memctl_options_t *popts, 1160 const common_timing_params_t *common_dimm, 1161 const unsigned int unq_mrs_en) 1162 { 1163 int i; 1164 unsigned short esdmode6 = 0; /* Extended SDRAM mode 6 */ 1165 unsigned short esdmode7 = 0; /* Extended SDRAM mode 7 */ 1166 unsigned int tccdl_min = picos_to_mclk(ctrl_num, common_dimm->tccdl_ps); 1167 1168 esdmode6 = ((tccdl_min - 4) & 0x7) << 10; 1169 1170 ddr->ddr_sdram_mode_10 = (0 1171 | ((esdmode6 & 0xffff) << 16) 1172 | ((esdmode7 & 0xffff) << 0) 1173 ); 1174 debug("FSLDDR: ddr_sdram_mode_10) = 0x%08x\n", ddr->ddr_sdram_mode_10); 1175 if (unq_mrs_en) { /* unique mode registers are supported */ 1176 for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 1177 switch (i) { 1178 case 1: 1179 ddr->ddr_sdram_mode_12 = (0 1180 | ((esdmode6 & 0xFFFF) << 16) 1181 | ((esdmode7 & 0xFFFF) << 0) 1182 ); 1183 break; 1184 case 2: 1185 ddr->ddr_sdram_mode_14 = (0 1186 | ((esdmode6 & 0xFFFF) << 16) 1187 | ((esdmode7 & 0xFFFF) << 0) 1188 ); 1189 break; 1190 case 3: 1191 ddr->ddr_sdram_mode_16 = (0 1192 | ((esdmode6 & 0xFFFF) << 16) 1193 | ((esdmode7 & 0xFFFF) << 0) 1194 ); 1195 break; 1196 } 1197 } 1198 debug("FSLDDR: ddr_sdram_mode_12 = 0x%08x\n", 1199 ddr->ddr_sdram_mode_12); 1200 debug("FSLDDR: ddr_sdram_mode_14 = 0x%08x\n", 1201 ddr->ddr_sdram_mode_14); 1202 debug("FSLDDR: ddr_sdram_mode_16 = 0x%08x\n", 1203 ddr->ddr_sdram_mode_16); 1204 } 1205 } 1206 1207 #endif 1208 1209 /* DDR SDRAM Interval Configuration (DDR_SDRAM_INTERVAL) */ 1210 static void set_ddr_sdram_interval(const unsigned int ctrl_num, 1211 fsl_ddr_cfg_regs_t *ddr, 1212 const memctl_options_t *popts, 1213 const common_timing_params_t *common_dimm) 1214 { 1215 unsigned int refint; /* Refresh interval */ 1216 unsigned int bstopre; /* Precharge interval */ 1217 1218 refint = picos_to_mclk(ctrl_num, common_dimm->refresh_rate_ps); 1219 1220 bstopre = popts->bstopre; 1221 1222 /* refint field used 0x3FFF in earlier controllers */ 1223 ddr->ddr_sdram_interval = (0 1224 | ((refint & 0xFFFF) << 16) 1225 | ((bstopre & 0x3FFF) << 0) 1226 ); 1227 debug("FSLDDR: ddr_sdram_interval = 0x%08x\n", ddr->ddr_sdram_interval); 1228 } 1229 1230 #ifdef CONFIG_SYS_FSL_DDR4 1231 /* DDR SDRAM Mode configuration set (DDR_SDRAM_MODE) */ 1232 static void set_ddr_sdram_mode(const unsigned int ctrl_num, 1233 fsl_ddr_cfg_regs_t *ddr, 1234 const memctl_options_t *popts, 1235 const common_timing_params_t *common_dimm, 1236 unsigned int cas_latency, 1237 unsigned int additive_latency, 1238 const unsigned int unq_mrs_en) 1239 { 1240 int i; 1241 unsigned short esdmode; /* Extended SDRAM mode */ 1242 unsigned short sdmode; /* SDRAM mode */ 1243 1244 /* Mode Register - MR1 */ 1245 unsigned int qoff = 0; /* Output buffer enable 0=yes, 1=no */ 1246 unsigned int tdqs_en = 0; /* TDQS Enable: 0=no, 1=yes */ 1247 unsigned int rtt; 1248 unsigned int wrlvl_en = 0; /* Write level enable: 0=no, 1=yes */ 1249 unsigned int al = 0; /* Posted CAS# additive latency (AL) */ 1250 unsigned int dic = 0; /* Output driver impedance, 40ohm */ 1251 unsigned int dll_en = 1; /* DLL Enable 1=Enable (Normal), 1252 0=Disable (Test/Debug) */ 1253 1254 /* Mode Register - MR0 */ 1255 unsigned int wr = 0; /* Write Recovery */ 1256 unsigned int dll_rst; /* DLL Reset */ 1257 unsigned int mode; /* Normal=0 or Test=1 */ 1258 unsigned int caslat = 4;/* CAS# latency, default set as 6 cycles */ 1259 /* BT: Burst Type (0=Nibble Sequential, 1=Interleaved) */ 1260 unsigned int bt; 1261 unsigned int bl; /* BL: Burst Length */ 1262 1263 unsigned int wr_mclk; 1264 /* DDR4 support WR 10, 12, 14, 16, 18, 20, 24 */ 1265 static const u8 wr_table[] = { 1266 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 6, 6}; 1267 /* DDR4 support CAS 9, 10, 11, 12, 13, 14, 15, 16, 18, 20, 22, 24 */ 1268 static const u8 cas_latency_table[] = { 1269 0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 1270 9, 9, 10, 10, 11, 11}; 1271 1272 if (popts->rtt_override) 1273 rtt = popts->rtt_override_value; 1274 else 1275 rtt = popts->cs_local_opts[0].odt_rtt_norm; 1276 1277 if (additive_latency == (cas_latency - 1)) 1278 al = 1; 1279 if (additive_latency == (cas_latency - 2)) 1280 al = 2; 1281 1282 if (popts->quad_rank_present) 1283 dic = 1; /* output driver impedance 240/7 ohm */ 1284 1285 /* 1286 * The esdmode value will also be used for writing 1287 * MR1 during write leveling for DDR3, although the 1288 * bits specifically related to the write leveling 1289 * scheme will be handled automatically by the DDR 1290 * controller. so we set the wrlvl_en = 0 here. 1291 */ 1292 esdmode = (0 1293 | ((qoff & 0x1) << 12) 1294 | ((tdqs_en & 0x1) << 11) 1295 | ((rtt & 0x7) << 8) 1296 | ((wrlvl_en & 0x1) << 7) 1297 | ((al & 0x3) << 3) 1298 | ((dic & 0x3) << 1) /* DIC field is split */ 1299 | ((dll_en & 0x1) << 0) 1300 ); 1301 1302 /* 1303 * DLL control for precharge PD 1304 * 0=slow exit DLL off (tXPDLL) 1305 * 1=fast exit DLL on (tXP) 1306 */ 1307 1308 wr_mclk = picos_to_mclk(ctrl_num, common_dimm->twr_ps); 1309 if (wr_mclk <= 24) { 1310 wr = wr_table[wr_mclk - 10]; 1311 } else { 1312 printf("Error: unsupported write recovery for mode register wr_mclk = %d\n", 1313 wr_mclk); 1314 } 1315 1316 dll_rst = 0; /* dll no reset */ 1317 mode = 0; /* normal mode */ 1318 1319 /* look up table to get the cas latency bits */ 1320 if (cas_latency >= 9 && cas_latency <= 24) 1321 caslat = cas_latency_table[cas_latency - 9]; 1322 else 1323 printf("Error: unsupported cas latency for mode register\n"); 1324 1325 bt = 0; /* Nibble sequential */ 1326 1327 switch (popts->burst_length) { 1328 case DDR_BL8: 1329 bl = 0; 1330 break; 1331 case DDR_OTF: 1332 bl = 1; 1333 break; 1334 case DDR_BC4: 1335 bl = 2; 1336 break; 1337 default: 1338 printf("Error: invalid burst length of %u specified. ", 1339 popts->burst_length); 1340 puts("Defaulting to on-the-fly BC4 or BL8 beats.\n"); 1341 bl = 1; 1342 break; 1343 } 1344 1345 sdmode = (0 1346 | ((wr & 0x7) << 9) 1347 | ((dll_rst & 0x1) << 8) 1348 | ((mode & 0x1) << 7) 1349 | (((caslat >> 1) & 0x7) << 4) 1350 | ((bt & 0x1) << 3) 1351 | ((caslat & 1) << 2) 1352 | ((bl & 0x3) << 0) 1353 ); 1354 1355 ddr->ddr_sdram_mode = (0 1356 | ((esdmode & 0xFFFF) << 16) 1357 | ((sdmode & 0xFFFF) << 0) 1358 ); 1359 1360 debug("FSLDDR: ddr_sdram_mode = 0x%08x\n", ddr->ddr_sdram_mode); 1361 1362 if (unq_mrs_en) { /* unique mode registers are supported */ 1363 for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 1364 if (popts->rtt_override) 1365 rtt = popts->rtt_override_value; 1366 else 1367 rtt = popts->cs_local_opts[i].odt_rtt_norm; 1368 1369 esdmode &= 0xF8FF; /* clear bit 10,9,8 for rtt */ 1370 esdmode |= (rtt & 0x7) << 8; 1371 switch (i) { 1372 case 1: 1373 ddr->ddr_sdram_mode_3 = (0 1374 | ((esdmode & 0xFFFF) << 16) 1375 | ((sdmode & 0xFFFF) << 0) 1376 ); 1377 break; 1378 case 2: 1379 ddr->ddr_sdram_mode_5 = (0 1380 | ((esdmode & 0xFFFF) << 16) 1381 | ((sdmode & 0xFFFF) << 0) 1382 ); 1383 break; 1384 case 3: 1385 ddr->ddr_sdram_mode_7 = (0 1386 | ((esdmode & 0xFFFF) << 16) 1387 | ((sdmode & 0xFFFF) << 0) 1388 ); 1389 break; 1390 } 1391 } 1392 debug("FSLDDR: ddr_sdram_mode_3 = 0x%08x\n", 1393 ddr->ddr_sdram_mode_3); 1394 debug("FSLDDR: ddr_sdram_mode_5 = 0x%08x\n", 1395 ddr->ddr_sdram_mode_5); 1396 debug("FSLDDR: ddr_sdram_mode_5 = 0x%08x\n", 1397 ddr->ddr_sdram_mode_5); 1398 } 1399 } 1400 1401 #elif defined(CONFIG_SYS_FSL_DDR3) 1402 /* DDR SDRAM Mode configuration set (DDR_SDRAM_MODE) */ 1403 static void set_ddr_sdram_mode(const unsigned int ctrl_num, 1404 fsl_ddr_cfg_regs_t *ddr, 1405 const memctl_options_t *popts, 1406 const common_timing_params_t *common_dimm, 1407 unsigned int cas_latency, 1408 unsigned int additive_latency, 1409 const unsigned int unq_mrs_en) 1410 { 1411 int i; 1412 unsigned short esdmode; /* Extended SDRAM mode */ 1413 unsigned short sdmode; /* SDRAM mode */ 1414 1415 /* Mode Register - MR1 */ 1416 unsigned int qoff = 0; /* Output buffer enable 0=yes, 1=no */ 1417 unsigned int tdqs_en = 0; /* TDQS Enable: 0=no, 1=yes */ 1418 unsigned int rtt; 1419 unsigned int wrlvl_en = 0; /* Write level enable: 0=no, 1=yes */ 1420 unsigned int al = 0; /* Posted CAS# additive latency (AL) */ 1421 unsigned int dic = 0; /* Output driver impedance, 40ohm */ 1422 unsigned int dll_en = 0; /* DLL Enable 0=Enable (Normal), 1423 1=Disable (Test/Debug) */ 1424 1425 /* Mode Register - MR0 */ 1426 unsigned int dll_on; /* DLL control for precharge PD, 0=off, 1=on */ 1427 unsigned int wr = 0; /* Write Recovery */ 1428 unsigned int dll_rst; /* DLL Reset */ 1429 unsigned int mode; /* Normal=0 or Test=1 */ 1430 unsigned int caslat = 4;/* CAS# latency, default set as 6 cycles */ 1431 /* BT: Burst Type (0=Nibble Sequential, 1=Interleaved) */ 1432 unsigned int bt; 1433 unsigned int bl; /* BL: Burst Length */ 1434 1435 unsigned int wr_mclk; 1436 /* 1437 * DDR_SDRAM_MODE doesn't support 9,11,13,15 1438 * Please refer JEDEC Standard No. 79-3E for Mode Register MR0 1439 * for this table 1440 */ 1441 static const u8 wr_table[] = {1, 2, 3, 4, 5, 5, 6, 6, 7, 7, 0, 0}; 1442 1443 if (popts->rtt_override) 1444 rtt = popts->rtt_override_value; 1445 else 1446 rtt = popts->cs_local_opts[0].odt_rtt_norm; 1447 1448 if (additive_latency == (cas_latency - 1)) 1449 al = 1; 1450 if (additive_latency == (cas_latency - 2)) 1451 al = 2; 1452 1453 if (popts->quad_rank_present) 1454 dic = 1; /* output driver impedance 240/7 ohm */ 1455 1456 /* 1457 * The esdmode value will also be used for writing 1458 * MR1 during write leveling for DDR3, although the 1459 * bits specifically related to the write leveling 1460 * scheme will be handled automatically by the DDR 1461 * controller. so we set the wrlvl_en = 0 here. 1462 */ 1463 esdmode = (0 1464 | ((qoff & 0x1) << 12) 1465 | ((tdqs_en & 0x1) << 11) 1466 | ((rtt & 0x4) << 7) /* rtt field is split */ 1467 | ((wrlvl_en & 0x1) << 7) 1468 | ((rtt & 0x2) << 5) /* rtt field is split */ 1469 | ((dic & 0x2) << 4) /* DIC field is split */ 1470 | ((al & 0x3) << 3) 1471 | ((rtt & 0x1) << 2) /* rtt field is split */ 1472 | ((dic & 0x1) << 1) /* DIC field is split */ 1473 | ((dll_en & 0x1) << 0) 1474 ); 1475 1476 /* 1477 * DLL control for precharge PD 1478 * 0=slow exit DLL off (tXPDLL) 1479 * 1=fast exit DLL on (tXP) 1480 */ 1481 dll_on = 1; 1482 1483 wr_mclk = picos_to_mclk(ctrl_num, common_dimm->twr_ps); 1484 if (wr_mclk <= 16) { 1485 wr = wr_table[wr_mclk - 5]; 1486 } else { 1487 printf("Error: unsupported write recovery for mode register " 1488 "wr_mclk = %d\n", wr_mclk); 1489 } 1490 1491 dll_rst = 0; /* dll no reset */ 1492 mode = 0; /* normal mode */ 1493 1494 /* look up table to get the cas latency bits */ 1495 if (cas_latency >= 5 && cas_latency <= 16) { 1496 unsigned char cas_latency_table[] = { 1497 0x2, /* 5 clocks */ 1498 0x4, /* 6 clocks */ 1499 0x6, /* 7 clocks */ 1500 0x8, /* 8 clocks */ 1501 0xa, /* 9 clocks */ 1502 0xc, /* 10 clocks */ 1503 0xe, /* 11 clocks */ 1504 0x1, /* 12 clocks */ 1505 0x3, /* 13 clocks */ 1506 0x5, /* 14 clocks */ 1507 0x7, /* 15 clocks */ 1508 0x9, /* 16 clocks */ 1509 }; 1510 caslat = cas_latency_table[cas_latency - 5]; 1511 } else { 1512 printf("Error: unsupported cas latency for mode register\n"); 1513 } 1514 1515 bt = 0; /* Nibble sequential */ 1516 1517 switch (popts->burst_length) { 1518 case DDR_BL8: 1519 bl = 0; 1520 break; 1521 case DDR_OTF: 1522 bl = 1; 1523 break; 1524 case DDR_BC4: 1525 bl = 2; 1526 break; 1527 default: 1528 printf("Error: invalid burst length of %u specified. " 1529 " Defaulting to on-the-fly BC4 or BL8 beats.\n", 1530 popts->burst_length); 1531 bl = 1; 1532 break; 1533 } 1534 1535 sdmode = (0 1536 | ((dll_on & 0x1) << 12) 1537 | ((wr & 0x7) << 9) 1538 | ((dll_rst & 0x1) << 8) 1539 | ((mode & 0x1) << 7) 1540 | (((caslat >> 1) & 0x7) << 4) 1541 | ((bt & 0x1) << 3) 1542 | ((caslat & 1) << 2) 1543 | ((bl & 0x3) << 0) 1544 ); 1545 1546 ddr->ddr_sdram_mode = (0 1547 | ((esdmode & 0xFFFF) << 16) 1548 | ((sdmode & 0xFFFF) << 0) 1549 ); 1550 1551 debug("FSLDDR: ddr_sdram_mode = 0x%08x\n", ddr->ddr_sdram_mode); 1552 1553 if (unq_mrs_en) { /* unique mode registers are supported */ 1554 for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 1555 if (popts->rtt_override) 1556 rtt = popts->rtt_override_value; 1557 else 1558 rtt = popts->cs_local_opts[i].odt_rtt_norm; 1559 1560 esdmode &= 0xFDBB; /* clear bit 9,6,2 */ 1561 esdmode |= (0 1562 | ((rtt & 0x4) << 7) /* rtt field is split */ 1563 | ((rtt & 0x2) << 5) /* rtt field is split */ 1564 | ((rtt & 0x1) << 2) /* rtt field is split */ 1565 ); 1566 switch (i) { 1567 case 1: 1568 ddr->ddr_sdram_mode_3 = (0 1569 | ((esdmode & 0xFFFF) << 16) 1570 | ((sdmode & 0xFFFF) << 0) 1571 ); 1572 break; 1573 case 2: 1574 ddr->ddr_sdram_mode_5 = (0 1575 | ((esdmode & 0xFFFF) << 16) 1576 | ((sdmode & 0xFFFF) << 0) 1577 ); 1578 break; 1579 case 3: 1580 ddr->ddr_sdram_mode_7 = (0 1581 | ((esdmode & 0xFFFF) << 16) 1582 | ((sdmode & 0xFFFF) << 0) 1583 ); 1584 break; 1585 } 1586 } 1587 debug("FSLDDR: ddr_sdram_mode_3 = 0x%08x\n", 1588 ddr->ddr_sdram_mode_3); 1589 debug("FSLDDR: ddr_sdram_mode_5 = 0x%08x\n", 1590 ddr->ddr_sdram_mode_5); 1591 debug("FSLDDR: ddr_sdram_mode_5 = 0x%08x\n", 1592 ddr->ddr_sdram_mode_5); 1593 } 1594 } 1595 1596 #else /* !CONFIG_SYS_FSL_DDR3 */ 1597 1598 /* DDR SDRAM Mode configuration set (DDR_SDRAM_MODE) */ 1599 static void set_ddr_sdram_mode(const unsigned int ctrl_num, 1600 fsl_ddr_cfg_regs_t *ddr, 1601 const memctl_options_t *popts, 1602 const common_timing_params_t *common_dimm, 1603 unsigned int cas_latency, 1604 unsigned int additive_latency, 1605 const unsigned int unq_mrs_en) 1606 { 1607 unsigned short esdmode; /* Extended SDRAM mode */ 1608 unsigned short sdmode; /* SDRAM mode */ 1609 1610 /* 1611 * FIXME: This ought to be pre-calculated in a 1612 * technology-specific routine, 1613 * e.g. compute_DDR2_mode_register(), and then the 1614 * sdmode and esdmode passed in as part of common_dimm. 1615 */ 1616 1617 /* Extended Mode Register */ 1618 unsigned int mrs = 0; /* Mode Register Set */ 1619 unsigned int outputs = 0; /* 0=Enabled, 1=Disabled */ 1620 unsigned int rdqs_en = 0; /* RDQS Enable: 0=no, 1=yes */ 1621 unsigned int dqs_en = 0; /* DQS# Enable: 0=enable, 1=disable */ 1622 unsigned int ocd = 0; /* 0x0=OCD not supported, 1623 0x7=OCD default state */ 1624 unsigned int rtt; 1625 unsigned int al; /* Posted CAS# additive latency (AL) */ 1626 unsigned int ods = 0; /* Output Drive Strength: 1627 0 = Full strength (18ohm) 1628 1 = Reduced strength (4ohm) */ 1629 unsigned int dll_en = 0; /* DLL Enable 0=Enable (Normal), 1630 1=Disable (Test/Debug) */ 1631 1632 /* Mode Register (MR) */ 1633 unsigned int mr; /* Mode Register Definition */ 1634 unsigned int pd; /* Power-Down Mode */ 1635 unsigned int wr; /* Write Recovery */ 1636 unsigned int dll_res; /* DLL Reset */ 1637 unsigned int mode; /* Normal=0 or Test=1 */ 1638 unsigned int caslat = 0;/* CAS# latency */ 1639 /* BT: Burst Type (0=Sequential, 1=Interleaved) */ 1640 unsigned int bt; 1641 unsigned int bl; /* BL: Burst Length */ 1642 1643 dqs_en = !popts->dqs_config; 1644 rtt = fsl_ddr_get_rtt(); 1645 1646 al = additive_latency; 1647 1648 esdmode = (0 1649 | ((mrs & 0x3) << 14) 1650 | ((outputs & 0x1) << 12) 1651 | ((rdqs_en & 0x1) << 11) 1652 | ((dqs_en & 0x1) << 10) 1653 | ((ocd & 0x7) << 7) 1654 | ((rtt & 0x2) << 5) /* rtt field is split */ 1655 | ((al & 0x7) << 3) 1656 | ((rtt & 0x1) << 2) /* rtt field is split */ 1657 | ((ods & 0x1) << 1) 1658 | ((dll_en & 0x1) << 0) 1659 ); 1660 1661 mr = 0; /* FIXME: CHECKME */ 1662 1663 /* 1664 * 0 = Fast Exit (Normal) 1665 * 1 = Slow Exit (Low Power) 1666 */ 1667 pd = 0; 1668 1669 #if defined(CONFIG_SYS_FSL_DDR1) 1670 wr = 0; /* Historical */ 1671 #elif defined(CONFIG_SYS_FSL_DDR2) 1672 wr = picos_to_mclk(ctrl_num, common_dimm->twr_ps); 1673 #endif 1674 dll_res = 0; 1675 mode = 0; 1676 1677 #if defined(CONFIG_SYS_FSL_DDR1) 1678 if (1 <= cas_latency && cas_latency <= 4) { 1679 unsigned char mode_caslat_table[4] = { 1680 0x5, /* 1.5 clocks */ 1681 0x2, /* 2.0 clocks */ 1682 0x6, /* 2.5 clocks */ 1683 0x3 /* 3.0 clocks */ 1684 }; 1685 caslat = mode_caslat_table[cas_latency - 1]; 1686 } else { 1687 printf("Warning: unknown cas_latency %d\n", cas_latency); 1688 } 1689 #elif defined(CONFIG_SYS_FSL_DDR2) 1690 caslat = cas_latency; 1691 #endif 1692 bt = 0; 1693 1694 switch (popts->burst_length) { 1695 case DDR_BL4: 1696 bl = 2; 1697 break; 1698 case DDR_BL8: 1699 bl = 3; 1700 break; 1701 default: 1702 printf("Error: invalid burst length of %u specified. " 1703 " Defaulting to 4 beats.\n", 1704 popts->burst_length); 1705 bl = 2; 1706 break; 1707 } 1708 1709 sdmode = (0 1710 | ((mr & 0x3) << 14) 1711 | ((pd & 0x1) << 12) 1712 | ((wr & 0x7) << 9) 1713 | ((dll_res & 0x1) << 8) 1714 | ((mode & 0x1) << 7) 1715 | ((caslat & 0x7) << 4) 1716 | ((bt & 0x1) << 3) 1717 | ((bl & 0x7) << 0) 1718 ); 1719 1720 ddr->ddr_sdram_mode = (0 1721 | ((esdmode & 0xFFFF) << 16) 1722 | ((sdmode & 0xFFFF) << 0) 1723 ); 1724 debug("FSLDDR: ddr_sdram_mode = 0x%08x\n", ddr->ddr_sdram_mode); 1725 } 1726 #endif 1727 1728 /* DDR SDRAM Data Initialization (DDR_DATA_INIT) */ 1729 static void set_ddr_data_init(fsl_ddr_cfg_regs_t *ddr) 1730 { 1731 unsigned int init_value; /* Initialization value */ 1732 1733 #ifdef CONFIG_MEM_INIT_VALUE 1734 init_value = CONFIG_MEM_INIT_VALUE; 1735 #else 1736 init_value = 0xDEADBEEF; 1737 #endif 1738 ddr->ddr_data_init = init_value; 1739 } 1740 1741 /* 1742 * DDR SDRAM Clock Control (DDR_SDRAM_CLK_CNTL) 1743 * The old controller on the 8540/60 doesn't have this register. 1744 * Hope it's OK to set it (to 0) anyway. 1745 */ 1746 static void set_ddr_sdram_clk_cntl(fsl_ddr_cfg_regs_t *ddr, 1747 const memctl_options_t *popts) 1748 { 1749 unsigned int clk_adjust; /* Clock adjust */ 1750 unsigned int ss_en = 0; /* Source synchronous enable */ 1751 1752 #if defined(CONFIG_MPC8541) || defined(CONFIG_MPC8555) 1753 /* Per FSL Application Note: AN2805 */ 1754 ss_en = 1; 1755 #endif 1756 clk_adjust = popts->clk_adjust; 1757 ddr->ddr_sdram_clk_cntl = (0 1758 | ((ss_en & 0x1) << 31) 1759 | ((clk_adjust & 0xF) << 23) 1760 ); 1761 debug("FSLDDR: clk_cntl = 0x%08x\n", ddr->ddr_sdram_clk_cntl); 1762 } 1763 1764 /* DDR Initialization Address (DDR_INIT_ADDR) */ 1765 static void set_ddr_init_addr(fsl_ddr_cfg_regs_t *ddr) 1766 { 1767 unsigned int init_addr = 0; /* Initialization address */ 1768 1769 ddr->ddr_init_addr = init_addr; 1770 } 1771 1772 /* DDR Initialization Address (DDR_INIT_EXT_ADDR) */ 1773 static void set_ddr_init_ext_addr(fsl_ddr_cfg_regs_t *ddr) 1774 { 1775 unsigned int uia = 0; /* Use initialization address */ 1776 unsigned int init_ext_addr = 0; /* Initialization address */ 1777 1778 ddr->ddr_init_ext_addr = (0 1779 | ((uia & 0x1) << 31) 1780 | (init_ext_addr & 0xF) 1781 ); 1782 } 1783 1784 /* DDR SDRAM Timing Configuration 4 (TIMING_CFG_4) */ 1785 static void set_timing_cfg_4(fsl_ddr_cfg_regs_t *ddr, 1786 const memctl_options_t *popts) 1787 { 1788 unsigned int rwt = 0; /* Read-to-write turnaround for same CS */ 1789 unsigned int wrt = 0; /* Write-to-read turnaround for same CS */ 1790 unsigned int rrt = 0; /* Read-to-read turnaround for same CS */ 1791 unsigned int wwt = 0; /* Write-to-write turnaround for same CS */ 1792 unsigned int dll_lock = 0; /* DDR SDRAM DLL Lock Time */ 1793 1794 #if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4) 1795 if (popts->burst_length == DDR_BL8) { 1796 /* We set BL/2 for fixed BL8 */ 1797 rrt = 0; /* BL/2 clocks */ 1798 wwt = 0; /* BL/2 clocks */ 1799 } else { 1800 /* We need to set BL/2 + 2 to BC4 and OTF */ 1801 rrt = 2; /* BL/2 + 2 clocks */ 1802 wwt = 2; /* BL/2 + 2 clocks */ 1803 } 1804 #endif 1805 1806 #ifdef CONFIG_SYS_FSL_DDR4 1807 dll_lock = 2; /* tDLLK = 1024 clocks */ 1808 #elif defined(CONFIG_SYS_FSL_DDR3) 1809 dll_lock = 1; /* tDLLK = 512 clocks from spec */ 1810 #endif 1811 ddr->timing_cfg_4 = (0 1812 | ((rwt & 0xf) << 28) 1813 | ((wrt & 0xf) << 24) 1814 | ((rrt & 0xf) << 20) 1815 | ((wwt & 0xf) << 16) 1816 | (dll_lock & 0x3) 1817 ); 1818 debug("FSLDDR: timing_cfg_4 = 0x%08x\n", ddr->timing_cfg_4); 1819 } 1820 1821 /* DDR SDRAM Timing Configuration 5 (TIMING_CFG_5) */ 1822 static void set_timing_cfg_5(fsl_ddr_cfg_regs_t *ddr, unsigned int cas_latency) 1823 { 1824 unsigned int rodt_on = 0; /* Read to ODT on */ 1825 unsigned int rodt_off = 0; /* Read to ODT off */ 1826 unsigned int wodt_on = 0; /* Write to ODT on */ 1827 unsigned int wodt_off = 0; /* Write to ODT off */ 1828 1829 #if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4) 1830 unsigned int wr_lat = ((ddr->timing_cfg_2 & 0x00780000) >> 19) + 1831 ((ddr->timing_cfg_2 & 0x00040000) >> 14); 1832 /* rodt_on = timing_cfg_1[caslat] - timing_cfg_2[wrlat] + 1 */ 1833 if (cas_latency >= wr_lat) 1834 rodt_on = cas_latency - wr_lat + 1; 1835 rodt_off = 4; /* 4 clocks */ 1836 wodt_on = 1; /* 1 clocks */ 1837 wodt_off = 4; /* 4 clocks */ 1838 #endif 1839 1840 ddr->timing_cfg_5 = (0 1841 | ((rodt_on & 0x1f) << 24) 1842 | ((rodt_off & 0x7) << 20) 1843 | ((wodt_on & 0x1f) << 12) 1844 | ((wodt_off & 0x7) << 8) 1845 ); 1846 debug("FSLDDR: timing_cfg_5 = 0x%08x\n", ddr->timing_cfg_5); 1847 } 1848 1849 #ifdef CONFIG_SYS_FSL_DDR4 1850 static void set_timing_cfg_6(fsl_ddr_cfg_regs_t *ddr) 1851 { 1852 unsigned int hs_caslat = 0; 1853 unsigned int hs_wrlat = 0; 1854 unsigned int hs_wrrec = 0; 1855 unsigned int hs_clkadj = 0; 1856 unsigned int hs_wrlvl_start = 0; 1857 1858 ddr->timing_cfg_6 = (0 1859 | ((hs_caslat & 0x1f) << 24) 1860 | ((hs_wrlat & 0x1f) << 19) 1861 | ((hs_wrrec & 0x1f) << 12) 1862 | ((hs_clkadj & 0x1f) << 6) 1863 | ((hs_wrlvl_start & 0x1f) << 0) 1864 ); 1865 debug("FSLDDR: timing_cfg_6 = 0x%08x\n", ddr->timing_cfg_6); 1866 } 1867 1868 static void set_timing_cfg_7(const unsigned int ctrl_num, 1869 fsl_ddr_cfg_regs_t *ddr, 1870 const common_timing_params_t *common_dimm) 1871 { 1872 unsigned int txpr, tcksre, tcksrx; 1873 unsigned int cke_rst, cksre, cksrx, par_lat, cs_to_cmd; 1874 1875 txpr = max(5U, picos_to_mclk(ctrl_num, common_dimm->trfc1_ps + 10000)); 1876 tcksre = max(5U, picos_to_mclk(ctrl_num, 10000)); 1877 tcksrx = max(5U, picos_to_mclk(ctrl_num, 10000)); 1878 par_lat = 0; 1879 cs_to_cmd = 0; 1880 1881 if (txpr <= 200) 1882 cke_rst = 0; 1883 else if (txpr <= 256) 1884 cke_rst = 1; 1885 else if (txpr <= 512) 1886 cke_rst = 2; 1887 else 1888 cke_rst = 3; 1889 1890 if (tcksre <= 19) 1891 cksre = tcksre - 5; 1892 else 1893 cksre = 15; 1894 1895 if (tcksrx <= 19) 1896 cksrx = tcksrx - 5; 1897 else 1898 cksrx = 15; 1899 1900 ddr->timing_cfg_7 = (0 1901 | ((cke_rst & 0x3) << 28) 1902 | ((cksre & 0xf) << 24) 1903 | ((cksrx & 0xf) << 20) 1904 | ((par_lat & 0xf) << 16) 1905 | ((cs_to_cmd & 0xf) << 4) 1906 ); 1907 debug("FSLDDR: timing_cfg_7 = 0x%08x\n", ddr->timing_cfg_7); 1908 } 1909 1910 static void set_timing_cfg_8(const unsigned int ctrl_num, 1911 fsl_ddr_cfg_regs_t *ddr, 1912 const memctl_options_t *popts, 1913 const common_timing_params_t *common_dimm, 1914 unsigned int cas_latency) 1915 { 1916 unsigned int rwt_bg, wrt_bg, rrt_bg, wwt_bg; 1917 unsigned int acttoact_bg, wrtord_bg, pre_all_rec; 1918 unsigned int tccdl = picos_to_mclk(ctrl_num, common_dimm->tccdl_ps); 1919 unsigned int wr_lat = ((ddr->timing_cfg_2 & 0x00780000) >> 19) + 1920 ((ddr->timing_cfg_2 & 0x00040000) >> 14); 1921 1922 rwt_bg = cas_latency + 2 + 4 - wr_lat; 1923 if (rwt_bg < tccdl) 1924 rwt_bg = tccdl - rwt_bg; 1925 else 1926 rwt_bg = 0; 1927 1928 wrt_bg = wr_lat + 4 + 1 - cas_latency; 1929 if (wrt_bg < tccdl) 1930 wrt_bg = tccdl - wrt_bg; 1931 else 1932 wrt_bg = 0; 1933 1934 if (popts->burst_length == DDR_BL8) { 1935 rrt_bg = tccdl - 4; 1936 wwt_bg = tccdl - 4; 1937 } else { 1938 rrt_bg = tccdl - 2; 1939 wwt_bg = tccdl - 2; 1940 } 1941 1942 acttoact_bg = picos_to_mclk(ctrl_num, common_dimm->trrdl_ps); 1943 wrtord_bg = max(4U, picos_to_mclk(ctrl_num, 7500)); 1944 if (popts->otf_burst_chop_en) 1945 wrtord_bg += 2; 1946 1947 pre_all_rec = 0; 1948 1949 ddr->timing_cfg_8 = (0 1950 | ((rwt_bg & 0xf) << 28) 1951 | ((wrt_bg & 0xf) << 24) 1952 | ((rrt_bg & 0xf) << 20) 1953 | ((wwt_bg & 0xf) << 16) 1954 | ((acttoact_bg & 0xf) << 12) 1955 | ((wrtord_bg & 0xf) << 8) 1956 | ((pre_all_rec & 0x1f) << 0) 1957 ); 1958 1959 debug("FSLDDR: timing_cfg_8 = 0x%08x\n", ddr->timing_cfg_8); 1960 } 1961 1962 static void set_timing_cfg_9(fsl_ddr_cfg_regs_t *ddr) 1963 { 1964 ddr->timing_cfg_9 = 0; 1965 debug("FSLDDR: timing_cfg_9 = 0x%08x\n", ddr->timing_cfg_9); 1966 } 1967 1968 /* This function needs to be called after set_ddr_sdram_cfg() is called */ 1969 static void set_ddr_dq_mapping(fsl_ddr_cfg_regs_t *ddr, 1970 const dimm_params_t *dimm_params) 1971 { 1972 unsigned int acc_ecc_en = (ddr->ddr_sdram_cfg >> 2) & 0x1; 1973 1974 ddr->dq_map_0 = ((dimm_params->dq_mapping[0] & 0x3F) << 26) | 1975 ((dimm_params->dq_mapping[1] & 0x3F) << 20) | 1976 ((dimm_params->dq_mapping[2] & 0x3F) << 14) | 1977 ((dimm_params->dq_mapping[3] & 0x3F) << 8) | 1978 ((dimm_params->dq_mapping[4] & 0x3F) << 2); 1979 1980 ddr->dq_map_1 = ((dimm_params->dq_mapping[5] & 0x3F) << 26) | 1981 ((dimm_params->dq_mapping[6] & 0x3F) << 20) | 1982 ((dimm_params->dq_mapping[7] & 0x3F) << 14) | 1983 ((dimm_params->dq_mapping[10] & 0x3F) << 8) | 1984 ((dimm_params->dq_mapping[11] & 0x3F) << 2); 1985 1986 ddr->dq_map_2 = ((dimm_params->dq_mapping[12] & 0x3F) << 26) | 1987 ((dimm_params->dq_mapping[13] & 0x3F) << 20) | 1988 ((dimm_params->dq_mapping[14] & 0x3F) << 14) | 1989 ((dimm_params->dq_mapping[15] & 0x3F) << 8) | 1990 ((dimm_params->dq_mapping[16] & 0x3F) << 2); 1991 1992 /* dq_map for ECC[4:7] is set to 0 if accumulated ECC is enabled */ 1993 ddr->dq_map_3 = ((dimm_params->dq_mapping[17] & 0x3F) << 26) | 1994 ((dimm_params->dq_mapping[8] & 0x3F) << 20) | 1995 (acc_ecc_en ? 0 : 1996 (dimm_params->dq_mapping[9] & 0x3F) << 14) | 1997 dimm_params->dq_mapping_ors; 1998 1999 debug("FSLDDR: dq_map_0 = 0x%08x\n", ddr->dq_map_0); 2000 debug("FSLDDR: dq_map_1 = 0x%08x\n", ddr->dq_map_1); 2001 debug("FSLDDR: dq_map_2 = 0x%08x\n", ddr->dq_map_2); 2002 debug("FSLDDR: dq_map_3 = 0x%08x\n", ddr->dq_map_3); 2003 } 2004 static void set_ddr_sdram_cfg_3(fsl_ddr_cfg_regs_t *ddr, 2005 const memctl_options_t *popts) 2006 { 2007 int rd_pre; 2008 2009 rd_pre = popts->quad_rank_present ? 1 : 0; 2010 2011 ddr->ddr_sdram_cfg_3 = (rd_pre & 0x1) << 16; 2012 2013 debug("FSLDDR: ddr_sdram_cfg_3 = 0x%08x\n", ddr->ddr_sdram_cfg_3); 2014 } 2015 #endif /* CONFIG_SYS_FSL_DDR4 */ 2016 2017 /* DDR ZQ Calibration Control (DDR_ZQ_CNTL) */ 2018 static void set_ddr_zq_cntl(fsl_ddr_cfg_regs_t *ddr, unsigned int zq_en) 2019 { 2020 unsigned int zqinit = 0;/* POR ZQ Calibration Time (tZQinit) */ 2021 /* Normal Operation Full Calibration Time (tZQoper) */ 2022 unsigned int zqoper = 0; 2023 /* Normal Operation Short Calibration Time (tZQCS) */ 2024 unsigned int zqcs = 0; 2025 #ifdef CONFIG_SYS_FSL_DDR4 2026 unsigned int zqcs_init; 2027 #endif 2028 2029 if (zq_en) { 2030 #ifdef CONFIG_SYS_FSL_DDR4 2031 zqinit = 10; /* 1024 clocks */ 2032 zqoper = 9; /* 512 clocks */ 2033 zqcs = 7; /* 128 clocks */ 2034 zqcs_init = 5; /* 1024 refresh sequences */ 2035 #else 2036 zqinit = 9; /* 512 clocks */ 2037 zqoper = 8; /* 256 clocks */ 2038 zqcs = 6; /* 64 clocks */ 2039 #endif 2040 } 2041 2042 ddr->ddr_zq_cntl = (0 2043 | ((zq_en & 0x1) << 31) 2044 | ((zqinit & 0xF) << 24) 2045 | ((zqoper & 0xF) << 16) 2046 | ((zqcs & 0xF) << 8) 2047 #ifdef CONFIG_SYS_FSL_DDR4 2048 | ((zqcs_init & 0xF) << 0) 2049 #endif 2050 ); 2051 debug("FSLDDR: zq_cntl = 0x%08x\n", ddr->ddr_zq_cntl); 2052 } 2053 2054 /* DDR Write Leveling Control (DDR_WRLVL_CNTL) */ 2055 static void set_ddr_wrlvl_cntl(fsl_ddr_cfg_regs_t *ddr, unsigned int wrlvl_en, 2056 const memctl_options_t *popts) 2057 { 2058 /* 2059 * First DQS pulse rising edge after margining mode 2060 * is programmed (tWL_MRD) 2061 */ 2062 unsigned int wrlvl_mrd = 0; 2063 /* ODT delay after margining mode is programmed (tWL_ODTEN) */ 2064 unsigned int wrlvl_odten = 0; 2065 /* DQS/DQS_ delay after margining mode is programmed (tWL_DQSEN) */ 2066 unsigned int wrlvl_dqsen = 0; 2067 /* WRLVL_SMPL: Write leveling sample time */ 2068 unsigned int wrlvl_smpl = 0; 2069 /* WRLVL_WLR: Write leveling repeition time */ 2070 unsigned int wrlvl_wlr = 0; 2071 /* WRLVL_START: Write leveling start time */ 2072 unsigned int wrlvl_start = 0; 2073 2074 /* suggest enable write leveling for DDR3 due to fly-by topology */ 2075 if (wrlvl_en) { 2076 /* tWL_MRD min = 40 nCK, we set it 64 */ 2077 wrlvl_mrd = 0x6; 2078 /* tWL_ODTEN 128 */ 2079 wrlvl_odten = 0x7; 2080 /* tWL_DQSEN min = 25 nCK, we set it 32 */ 2081 wrlvl_dqsen = 0x5; 2082 /* 2083 * Write leveling sample time at least need 6 clocks 2084 * higher than tWLO to allow enough time for progagation 2085 * delay and sampling the prime data bits. 2086 */ 2087 wrlvl_smpl = 0xf; 2088 /* 2089 * Write leveling repetition time 2090 * at least tWLO + 6 clocks clocks 2091 * we set it 64 2092 */ 2093 wrlvl_wlr = 0x6; 2094 /* 2095 * Write leveling start time 2096 * The value use for the DQS_ADJUST for the first sample 2097 * when write leveling is enabled. It probably needs to be 2098 * overriden per platform. 2099 */ 2100 wrlvl_start = 0x8; 2101 /* 2102 * Override the write leveling sample and start time 2103 * according to specific board 2104 */ 2105 if (popts->wrlvl_override) { 2106 wrlvl_smpl = popts->wrlvl_sample; 2107 wrlvl_start = popts->wrlvl_start; 2108 } 2109 } 2110 2111 ddr->ddr_wrlvl_cntl = (0 2112 | ((wrlvl_en & 0x1) << 31) 2113 | ((wrlvl_mrd & 0x7) << 24) 2114 | ((wrlvl_odten & 0x7) << 20) 2115 | ((wrlvl_dqsen & 0x7) << 16) 2116 | ((wrlvl_smpl & 0xf) << 12) 2117 | ((wrlvl_wlr & 0x7) << 8) 2118 | ((wrlvl_start & 0x1F) << 0) 2119 ); 2120 debug("FSLDDR: wrlvl_cntl = 0x%08x\n", ddr->ddr_wrlvl_cntl); 2121 ddr->ddr_wrlvl_cntl_2 = popts->wrlvl_ctl_2; 2122 debug("FSLDDR: wrlvl_cntl_2 = 0x%08x\n", ddr->ddr_wrlvl_cntl_2); 2123 ddr->ddr_wrlvl_cntl_3 = popts->wrlvl_ctl_3; 2124 debug("FSLDDR: wrlvl_cntl_3 = 0x%08x\n", ddr->ddr_wrlvl_cntl_3); 2125 2126 } 2127 2128 /* DDR Self Refresh Counter (DDR_SR_CNTR) */ 2129 static void set_ddr_sr_cntr(fsl_ddr_cfg_regs_t *ddr, unsigned int sr_it) 2130 { 2131 /* Self Refresh Idle Threshold */ 2132 ddr->ddr_sr_cntr = (sr_it & 0xF) << 16; 2133 } 2134 2135 static void set_ddr_eor(fsl_ddr_cfg_regs_t *ddr, const memctl_options_t *popts) 2136 { 2137 if (popts->addr_hash) { 2138 ddr->ddr_eor = 0x40000000; /* address hash enable */ 2139 puts("Address hashing enabled.\n"); 2140 } 2141 } 2142 2143 static void set_ddr_cdr1(fsl_ddr_cfg_regs_t *ddr, const memctl_options_t *popts) 2144 { 2145 ddr->ddr_cdr1 = popts->ddr_cdr1; 2146 debug("FSLDDR: ddr_cdr1 = 0x%08x\n", ddr->ddr_cdr1); 2147 } 2148 2149 static void set_ddr_cdr2(fsl_ddr_cfg_regs_t *ddr, const memctl_options_t *popts) 2150 { 2151 ddr->ddr_cdr2 = popts->ddr_cdr2; 2152 debug("FSLDDR: ddr_cdr2 = 0x%08x\n", ddr->ddr_cdr2); 2153 } 2154 2155 unsigned int 2156 check_fsl_memctl_config_regs(const fsl_ddr_cfg_regs_t *ddr) 2157 { 2158 unsigned int res = 0; 2159 2160 /* 2161 * Check that DDR_SDRAM_CFG[RD_EN] and DDR_SDRAM_CFG[2T_EN] are 2162 * not set at the same time. 2163 */ 2164 if (ddr->ddr_sdram_cfg & 0x10000000 2165 && ddr->ddr_sdram_cfg & 0x00008000) { 2166 printf("Error: DDR_SDRAM_CFG[RD_EN] and DDR_SDRAM_CFG[2T_EN] " 2167 " should not be set at the same time.\n"); 2168 res++; 2169 } 2170 2171 return res; 2172 } 2173 2174 unsigned int 2175 compute_fsl_memctl_config_regs(const unsigned int ctrl_num, 2176 const memctl_options_t *popts, 2177 fsl_ddr_cfg_regs_t *ddr, 2178 const common_timing_params_t *common_dimm, 2179 const dimm_params_t *dimm_params, 2180 unsigned int dbw_cap_adj, 2181 unsigned int size_only) 2182 { 2183 unsigned int i; 2184 unsigned int cas_latency; 2185 unsigned int additive_latency; 2186 unsigned int sr_it; 2187 unsigned int zq_en; 2188 unsigned int wrlvl_en; 2189 unsigned int ip_rev = 0; 2190 unsigned int unq_mrs_en = 0; 2191 int cs_en = 1; 2192 2193 memset(ddr, 0, sizeof(fsl_ddr_cfg_regs_t)); 2194 2195 if (common_dimm == NULL) { 2196 printf("Error: subset DIMM params struct null pointer\n"); 2197 return 1; 2198 } 2199 2200 /* 2201 * Process overrides first. 2202 * 2203 * FIXME: somehow add dereated caslat to this 2204 */ 2205 cas_latency = (popts->cas_latency_override) 2206 ? popts->cas_latency_override_value 2207 : common_dimm->lowest_common_spd_caslat; 2208 2209 additive_latency = (popts->additive_latency_override) 2210 ? popts->additive_latency_override_value 2211 : common_dimm->additive_latency; 2212 2213 sr_it = (popts->auto_self_refresh_en) 2214 ? popts->sr_it 2215 : 0; 2216 /* ZQ calibration */ 2217 zq_en = (popts->zq_en) ? 1 : 0; 2218 /* write leveling */ 2219 wrlvl_en = (popts->wrlvl_en) ? 1 : 0; 2220 2221 /* Chip Select Memory Bounds (CSn_BNDS) */ 2222 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 2223 unsigned long long ea, sa; 2224 unsigned int cs_per_dimm 2225 = CONFIG_CHIP_SELECTS_PER_CTRL / CONFIG_DIMM_SLOTS_PER_CTLR; 2226 unsigned int dimm_number 2227 = i / cs_per_dimm; 2228 unsigned long long rank_density 2229 = dimm_params[dimm_number].rank_density >> dbw_cap_adj; 2230 2231 if (dimm_params[dimm_number].n_ranks == 0) { 2232 debug("Skipping setup of CS%u " 2233 "because n_ranks on DIMM %u is 0\n", i, dimm_number); 2234 continue; 2235 } 2236 if (popts->memctl_interleaving) { 2237 switch (popts->ba_intlv_ctl & FSL_DDR_CS0_CS1_CS2_CS3) { 2238 case FSL_DDR_CS0_CS1_CS2_CS3: 2239 break; 2240 case FSL_DDR_CS0_CS1: 2241 case FSL_DDR_CS0_CS1_AND_CS2_CS3: 2242 if (i > 1) 2243 cs_en = 0; 2244 break; 2245 case FSL_DDR_CS2_CS3: 2246 default: 2247 if (i > 0) 2248 cs_en = 0; 2249 break; 2250 } 2251 sa = common_dimm->base_address; 2252 ea = sa + common_dimm->total_mem - 1; 2253 } else if (!popts->memctl_interleaving) { 2254 /* 2255 * If memory interleaving between controllers is NOT 2256 * enabled, the starting address for each memory 2257 * controller is distinct. However, because rank 2258 * interleaving is enabled, the starting and ending 2259 * addresses of the total memory on that memory 2260 * controller needs to be programmed into its 2261 * respective CS0_BNDS. 2262 */ 2263 switch (popts->ba_intlv_ctl & FSL_DDR_CS0_CS1_CS2_CS3) { 2264 case FSL_DDR_CS0_CS1_CS2_CS3: 2265 sa = common_dimm->base_address; 2266 ea = sa + common_dimm->total_mem - 1; 2267 break; 2268 case FSL_DDR_CS0_CS1_AND_CS2_CS3: 2269 if ((i >= 2) && (dimm_number == 0)) { 2270 sa = dimm_params[dimm_number].base_address + 2271 2 * rank_density; 2272 ea = sa + 2 * rank_density - 1; 2273 } else { 2274 sa = dimm_params[dimm_number].base_address; 2275 ea = sa + 2 * rank_density - 1; 2276 } 2277 break; 2278 case FSL_DDR_CS0_CS1: 2279 if (dimm_params[dimm_number].n_ranks > (i % cs_per_dimm)) { 2280 sa = dimm_params[dimm_number].base_address; 2281 ea = sa + rank_density - 1; 2282 if (i != 1) 2283 sa += (i % cs_per_dimm) * rank_density; 2284 ea += (i % cs_per_dimm) * rank_density; 2285 } else { 2286 sa = 0; 2287 ea = 0; 2288 } 2289 if (i == 0) 2290 ea += rank_density; 2291 break; 2292 case FSL_DDR_CS2_CS3: 2293 if (dimm_params[dimm_number].n_ranks > (i % cs_per_dimm)) { 2294 sa = dimm_params[dimm_number].base_address; 2295 ea = sa + rank_density - 1; 2296 if (i != 3) 2297 sa += (i % cs_per_dimm) * rank_density; 2298 ea += (i % cs_per_dimm) * rank_density; 2299 } else { 2300 sa = 0; 2301 ea = 0; 2302 } 2303 if (i == 2) 2304 ea += (rank_density >> dbw_cap_adj); 2305 break; 2306 default: /* No bank(chip-select) interleaving */ 2307 sa = dimm_params[dimm_number].base_address; 2308 ea = sa + rank_density - 1; 2309 if (dimm_params[dimm_number].n_ranks > (i % cs_per_dimm)) { 2310 sa += (i % cs_per_dimm) * rank_density; 2311 ea += (i % cs_per_dimm) * rank_density; 2312 } else { 2313 sa = 0; 2314 ea = 0; 2315 } 2316 break; 2317 } 2318 } 2319 2320 sa >>= 24; 2321 ea >>= 24; 2322 2323 if (cs_en) { 2324 ddr->cs[i].bnds = (0 2325 | ((sa & 0xffff) << 16) /* starting address */ 2326 | ((ea & 0xffff) << 0) /* ending address */ 2327 ); 2328 } else { 2329 /* setting bnds to 0xffffffff for inactive CS */ 2330 ddr->cs[i].bnds = 0xffffffff; 2331 } 2332 2333 debug("FSLDDR: cs[%d]_bnds = 0x%08x\n", i, ddr->cs[i].bnds); 2334 set_csn_config(dimm_number, i, ddr, popts, dimm_params); 2335 set_csn_config_2(i, ddr); 2336 } 2337 2338 /* 2339 * In the case we only need to compute the ddr sdram size, we only need 2340 * to set csn registers, so return from here. 2341 */ 2342 if (size_only) 2343 return 0; 2344 2345 set_ddr_eor(ddr, popts); 2346 2347 #if !defined(CONFIG_SYS_FSL_DDR1) 2348 set_timing_cfg_0(ctrl_num, ddr, popts, dimm_params); 2349 #endif 2350 2351 set_timing_cfg_3(ctrl_num, ddr, popts, common_dimm, cas_latency, 2352 additive_latency); 2353 set_timing_cfg_1(ctrl_num, ddr, popts, common_dimm, cas_latency); 2354 set_timing_cfg_2(ctrl_num, ddr, popts, common_dimm, 2355 cas_latency, additive_latency); 2356 2357 set_ddr_cdr1(ddr, popts); 2358 set_ddr_cdr2(ddr, popts); 2359 set_ddr_sdram_cfg(ddr, popts, common_dimm); 2360 ip_rev = fsl_ddr_get_version(); 2361 if (ip_rev > 0x40400) 2362 unq_mrs_en = 1; 2363 2364 if ((ip_rev > 0x40700) && (popts->cswl_override != 0)) 2365 ddr->debug[18] = popts->cswl_override; 2366 2367 set_ddr_sdram_cfg_2(ctrl_num, ddr, popts, unq_mrs_en); 2368 set_ddr_sdram_mode(ctrl_num, ddr, popts, common_dimm, 2369 cas_latency, additive_latency, unq_mrs_en); 2370 set_ddr_sdram_mode_2(ctrl_num, ddr, popts, common_dimm, unq_mrs_en); 2371 #ifdef CONFIG_SYS_FSL_DDR4 2372 set_ddr_sdram_mode_9(ddr, popts, common_dimm, unq_mrs_en); 2373 set_ddr_sdram_mode_10(ctrl_num, ddr, popts, common_dimm, unq_mrs_en); 2374 #endif 2375 set_ddr_sdram_interval(ctrl_num, ddr, popts, common_dimm); 2376 set_ddr_data_init(ddr); 2377 set_ddr_sdram_clk_cntl(ddr, popts); 2378 set_ddr_init_addr(ddr); 2379 set_ddr_init_ext_addr(ddr); 2380 set_timing_cfg_4(ddr, popts); 2381 set_timing_cfg_5(ddr, cas_latency); 2382 #ifdef CONFIG_SYS_FSL_DDR4 2383 set_ddr_sdram_cfg_3(ddr, popts); 2384 set_timing_cfg_6(ddr); 2385 set_timing_cfg_7(ctrl_num, ddr, common_dimm); 2386 set_timing_cfg_8(ctrl_num, ddr, popts, common_dimm, cas_latency); 2387 set_timing_cfg_9(ddr); 2388 set_ddr_dq_mapping(ddr, dimm_params); 2389 #endif 2390 2391 set_ddr_zq_cntl(ddr, zq_en); 2392 set_ddr_wrlvl_cntl(ddr, wrlvl_en, popts); 2393 2394 set_ddr_sr_cntr(ddr, sr_it); 2395 2396 set_ddr_sdram_rcw(ddr, popts, common_dimm); 2397 2398 #ifdef CONFIG_SYS_FSL_DDR_EMU 2399 /* disble DDR training for emulator */ 2400 ddr->debug[2] = 0x00000400; 2401 ddr->debug[4] = 0xff800800; 2402 ddr->debug[5] = 0x08000800; 2403 ddr->debug[6] = 0x08000800; 2404 ddr->debug[7] = 0x08000800; 2405 ddr->debug[8] = 0x08000800; 2406 #endif 2407 #ifdef CONFIG_SYS_FSL_ERRATUM_A004508 2408 if ((ip_rev >= 0x40000) && (ip_rev < 0x40400)) 2409 ddr->debug[2] |= 0x00000200; /* set bit 22 */ 2410 #endif 2411 2412 return check_fsl_memctl_config_regs(ddr); 2413 } 2414