1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright 2008-2016 Freescale Semiconductor, Inc. 4 * Copyright 2017-2018 NXP Semiconductor 5 */ 6 7 /* 8 * Generic driver for Freescale DDR/DDR2/DDR3/DDR4 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 #include <fsl_errata.h> 16 #include <fsl_ddr.h> 17 #include <fsl_immap.h> 18 #include <asm/io.h> 19 #if defined(CONFIG_FSL_LSCH2) || defined(CONFIG_FSL_LSCH3) || \ 20 defined(CONFIG_ARM) 21 #include <asm/arch/clock.h> 22 #endif 23 24 /* 25 * Determine Rtt value. 26 * 27 * This should likely be either board or controller specific. 28 * 29 * Rtt(nominal) - DDR2: 30 * 0 = Rtt disabled 31 * 1 = 75 ohm 32 * 2 = 150 ohm 33 * 3 = 50 ohm 34 * Rtt(nominal) - DDR3: 35 * 0 = Rtt disabled 36 * 1 = 60 ohm 37 * 2 = 120 ohm 38 * 3 = 40 ohm 39 * 4 = 20 ohm 40 * 5 = 30 ohm 41 * 42 * FIXME: Apparently 8641 needs a value of 2 43 * FIXME: Old code seys if 667 MHz or higher, use 3 on 8572 44 * 45 * FIXME: There was some effort down this line earlier: 46 * 47 * unsigned int i; 48 * for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL/2; i++) { 49 * if (popts->dimmslot[i].num_valid_cs 50 * && (popts->cs_local_opts[2*i].odt_rd_cfg 51 * || popts->cs_local_opts[2*i].odt_wr_cfg)) { 52 * rtt = 2; 53 * break; 54 * } 55 * } 56 */ 57 static inline int fsl_ddr_get_rtt(void) 58 { 59 int rtt; 60 61 #if defined(CONFIG_SYS_FSL_DDR1) 62 rtt = 0; 63 #elif defined(CONFIG_SYS_FSL_DDR2) 64 rtt = 3; 65 #else 66 rtt = 0; 67 #endif 68 69 return rtt; 70 } 71 72 #ifdef CONFIG_SYS_FSL_DDR4 73 /* 74 * compute CAS write latency according to DDR4 spec 75 * CWL = 9 for <= 1600MT/s 76 * 10 for <= 1866MT/s 77 * 11 for <= 2133MT/s 78 * 12 for <= 2400MT/s 79 * 14 for <= 2667MT/s 80 * 16 for <= 2933MT/s 81 * 18 for higher 82 */ 83 static inline unsigned int compute_cas_write_latency( 84 const unsigned int ctrl_num) 85 { 86 unsigned int cwl; 87 const unsigned int mclk_ps = get_memory_clk_period_ps(ctrl_num); 88 if (mclk_ps >= 1250) 89 cwl = 9; 90 else if (mclk_ps >= 1070) 91 cwl = 10; 92 else if (mclk_ps >= 935) 93 cwl = 11; 94 else if (mclk_ps >= 833) 95 cwl = 12; 96 else if (mclk_ps >= 750) 97 cwl = 14; 98 else if (mclk_ps >= 681) 99 cwl = 16; 100 else 101 cwl = 18; 102 103 return cwl; 104 } 105 #else 106 /* 107 * compute the CAS write latency according to DDR3 spec 108 * CWL = 5 if tCK >= 2.5ns 109 * 6 if 2.5ns > tCK >= 1.875ns 110 * 7 if 1.875ns > tCK >= 1.5ns 111 * 8 if 1.5ns > tCK >= 1.25ns 112 * 9 if 1.25ns > tCK >= 1.07ns 113 * 10 if 1.07ns > tCK >= 0.935ns 114 * 11 if 0.935ns > tCK >= 0.833ns 115 * 12 if 0.833ns > tCK >= 0.75ns 116 */ 117 static inline unsigned int compute_cas_write_latency( 118 const unsigned int ctrl_num) 119 { 120 unsigned int cwl; 121 const unsigned int mclk_ps = get_memory_clk_period_ps(ctrl_num); 122 123 if (mclk_ps >= 2500) 124 cwl = 5; 125 else if (mclk_ps >= 1875) 126 cwl = 6; 127 else if (mclk_ps >= 1500) 128 cwl = 7; 129 else if (mclk_ps >= 1250) 130 cwl = 8; 131 else if (mclk_ps >= 1070) 132 cwl = 9; 133 else if (mclk_ps >= 935) 134 cwl = 10; 135 else if (mclk_ps >= 833) 136 cwl = 11; 137 else if (mclk_ps >= 750) 138 cwl = 12; 139 else { 140 cwl = 12; 141 printf("Warning: CWL is out of range\n"); 142 } 143 return cwl; 144 } 145 #endif 146 147 /* Chip Select Configuration (CSn_CONFIG) */ 148 static void set_csn_config(int dimm_number, int i, fsl_ddr_cfg_regs_t *ddr, 149 const memctl_options_t *popts, 150 const dimm_params_t *dimm_params) 151 { 152 unsigned int cs_n_en = 0; /* Chip Select enable */ 153 unsigned int intlv_en = 0; /* Memory controller interleave enable */ 154 unsigned int intlv_ctl = 0; /* Interleaving control */ 155 unsigned int ap_n_en = 0; /* Chip select n auto-precharge enable */ 156 unsigned int odt_rd_cfg = 0; /* ODT for reads configuration */ 157 unsigned int odt_wr_cfg = 0; /* ODT for writes configuration */ 158 unsigned int ba_bits_cs_n = 0; /* Num of bank bits for SDRAM on CSn */ 159 unsigned int row_bits_cs_n = 0; /* Num of row bits for SDRAM on CSn */ 160 unsigned int col_bits_cs_n = 0; /* Num of ocl bits for SDRAM on CSn */ 161 int go_config = 0; 162 #ifdef CONFIG_SYS_FSL_DDR4 163 unsigned int bg_bits_cs_n = 0; /* Num of bank group bits */ 164 #else 165 unsigned int n_banks_per_sdram_device; 166 #endif 167 168 /* Compute CS_CONFIG only for existing ranks of each DIMM. */ 169 switch (i) { 170 case 0: 171 if (dimm_params[dimm_number].n_ranks > 0) { 172 go_config = 1; 173 /* These fields only available in CS0_CONFIG */ 174 if (!popts->memctl_interleaving) 175 break; 176 switch (popts->memctl_interleaving_mode) { 177 case FSL_DDR_256B_INTERLEAVING: 178 case FSL_DDR_CACHE_LINE_INTERLEAVING: 179 case FSL_DDR_PAGE_INTERLEAVING: 180 case FSL_DDR_BANK_INTERLEAVING: 181 case FSL_DDR_SUPERBANK_INTERLEAVING: 182 intlv_en = popts->memctl_interleaving; 183 intlv_ctl = popts->memctl_interleaving_mode; 184 break; 185 default: 186 break; 187 } 188 } 189 break; 190 case 1: 191 if ((dimm_number == 0 && dimm_params[0].n_ranks > 1) || \ 192 (dimm_number == 1 && dimm_params[1].n_ranks > 0)) 193 go_config = 1; 194 break; 195 case 2: 196 if ((dimm_number == 0 && dimm_params[0].n_ranks > 2) || \ 197 (dimm_number >= 1 && dimm_params[dimm_number].n_ranks > 0)) 198 go_config = 1; 199 break; 200 case 3: 201 if ((dimm_number == 0 && dimm_params[0].n_ranks > 3) || \ 202 (dimm_number == 1 && dimm_params[1].n_ranks > 1) || \ 203 (dimm_number == 3 && dimm_params[3].n_ranks > 0)) 204 go_config = 1; 205 break; 206 default: 207 break; 208 } 209 if (go_config) { 210 cs_n_en = 1; 211 ap_n_en = popts->cs_local_opts[i].auto_precharge; 212 odt_rd_cfg = popts->cs_local_opts[i].odt_rd_cfg; 213 odt_wr_cfg = popts->cs_local_opts[i].odt_wr_cfg; 214 #ifdef CONFIG_SYS_FSL_DDR4 215 ba_bits_cs_n = dimm_params[dimm_number].bank_addr_bits; 216 bg_bits_cs_n = dimm_params[dimm_number].bank_group_bits; 217 #else 218 n_banks_per_sdram_device 219 = dimm_params[dimm_number].n_banks_per_sdram_device; 220 ba_bits_cs_n = __ilog2(n_banks_per_sdram_device) - 2; 221 #endif 222 row_bits_cs_n = dimm_params[dimm_number].n_row_addr - 12; 223 col_bits_cs_n = dimm_params[dimm_number].n_col_addr - 8; 224 } 225 ddr->cs[i].config = (0 226 | ((cs_n_en & 0x1) << 31) 227 | ((intlv_en & 0x3) << 29) 228 | ((intlv_ctl & 0xf) << 24) 229 | ((ap_n_en & 0x1) << 23) 230 231 /* XXX: some implementation only have 1 bit starting at left */ 232 | ((odt_rd_cfg & 0x7) << 20) 233 234 /* XXX: Some implementation only have 1 bit starting at left */ 235 | ((odt_wr_cfg & 0x7) << 16) 236 237 | ((ba_bits_cs_n & 0x3) << 14) 238 | ((row_bits_cs_n & 0x7) << 8) 239 #ifdef CONFIG_SYS_FSL_DDR4 240 | ((bg_bits_cs_n & 0x3) << 4) 241 #endif 242 | ((col_bits_cs_n & 0x7) << 0) 243 ); 244 debug("FSLDDR: cs[%d]_config = 0x%08x\n", i,ddr->cs[i].config); 245 } 246 247 /* Chip Select Configuration 2 (CSn_CONFIG_2) */ 248 /* FIXME: 8572 */ 249 static void set_csn_config_2(int i, fsl_ddr_cfg_regs_t *ddr) 250 { 251 unsigned int pasr_cfg = 0; /* Partial array self refresh config */ 252 253 ddr->cs[i].config_2 = ((pasr_cfg & 7) << 24); 254 debug("FSLDDR: cs[%d]_config_2 = 0x%08x\n", i, ddr->cs[i].config_2); 255 } 256 257 /* -3E = 667 CL5, -25 = CL6 800, -25E = CL5 800 */ 258 259 #if !defined(CONFIG_SYS_FSL_DDR1) 260 /* 261 * Check DIMM configuration, return 2 if quad-rank or two dual-rank 262 * Return 1 if other two slots configuration. Return 0 if single slot. 263 */ 264 static inline int avoid_odt_overlap(const dimm_params_t *dimm_params) 265 { 266 #if CONFIG_DIMM_SLOTS_PER_CTLR == 1 267 if (dimm_params[0].n_ranks == 4) 268 return 2; 269 #endif 270 271 #if CONFIG_DIMM_SLOTS_PER_CTLR == 2 272 if ((dimm_params[0].n_ranks == 2) && 273 (dimm_params[1].n_ranks == 2)) 274 return 2; 275 276 #ifdef CONFIG_FSL_DDR_FIRST_SLOT_QUAD_CAPABLE 277 if (dimm_params[0].n_ranks == 4) 278 return 2; 279 #endif 280 281 if ((dimm_params[0].n_ranks != 0) && 282 (dimm_params[2].n_ranks != 0)) 283 return 1; 284 #endif 285 return 0; 286 } 287 288 /* 289 * DDR SDRAM Timing Configuration 0 (TIMING_CFG_0) 290 * 291 * Avoid writing for DDR I. The new PQ38 DDR controller 292 * dreams up non-zero default values to be backwards compatible. 293 */ 294 static void set_timing_cfg_0(const unsigned int ctrl_num, 295 fsl_ddr_cfg_regs_t *ddr, 296 const memctl_options_t *popts, 297 const dimm_params_t *dimm_params) 298 { 299 unsigned char trwt_mclk = 0; /* Read-to-write turnaround */ 300 unsigned char twrt_mclk = 0; /* Write-to-read turnaround */ 301 /* 7.5 ns on -3E; 0 means WL - CL + BL/2 + 1 */ 302 unsigned char trrt_mclk = 0; /* Read-to-read turnaround */ 303 unsigned char twwt_mclk = 0; /* Write-to-write turnaround */ 304 305 /* Active powerdown exit timing (tXARD and tXARDS). */ 306 unsigned char act_pd_exit_mclk; 307 /* Precharge powerdown exit timing (tXP). */ 308 unsigned char pre_pd_exit_mclk; 309 /* ODT powerdown exit timing (tAXPD). */ 310 unsigned char taxpd_mclk = 0; 311 /* Mode register set cycle time (tMRD). */ 312 unsigned char tmrd_mclk; 313 #if defined(CONFIG_SYS_FSL_DDR4) || defined(CONFIG_SYS_FSL_DDR3) 314 const unsigned int mclk_ps = get_memory_clk_period_ps(ctrl_num); 315 #endif 316 317 #ifdef CONFIG_SYS_FSL_DDR4 318 /* tXP=max(4nCK, 6ns) */ 319 int txp = max((int)mclk_ps * 4, 6000); /* unit=ps */ 320 unsigned int data_rate = get_ddr_freq(ctrl_num); 321 322 /* for faster clock, need more time for data setup */ 323 trwt_mclk = (data_rate/1000000 > 1900) ? 3 : 2; 324 325 /* 326 * for single quad-rank DIMM and two-slot DIMMs 327 * to avoid ODT overlap 328 */ 329 switch (avoid_odt_overlap(dimm_params)) { 330 case 2: 331 twrt_mclk = 2; 332 twwt_mclk = 2; 333 trrt_mclk = 2; 334 break; 335 default: 336 twrt_mclk = 1; 337 twwt_mclk = 1; 338 trrt_mclk = 0; 339 break; 340 } 341 342 act_pd_exit_mclk = picos_to_mclk(ctrl_num, txp); 343 pre_pd_exit_mclk = act_pd_exit_mclk; 344 /* 345 * MRS_CYC = max(tMRD, tMOD) 346 * tMRD = 8nCK, tMOD = max(24nCK, 15ns) 347 */ 348 tmrd_mclk = max(24U, picos_to_mclk(ctrl_num, 15000)); 349 #elif defined(CONFIG_SYS_FSL_DDR3) 350 unsigned int data_rate = get_ddr_freq(ctrl_num); 351 int txp; 352 unsigned int ip_rev; 353 int odt_overlap; 354 /* 355 * (tXARD and tXARDS). Empirical? 356 * The DDR3 spec has not tXARD, 357 * we use the tXP instead of it. 358 * tXP=max(3nCK, 7.5ns) for DDR3-800, 1066 359 * max(3nCK, 6ns) for DDR3-1333, 1600, 1866, 2133 360 * spec has not the tAXPD, we use 361 * tAXPD=1, need design to confirm. 362 */ 363 txp = max((int)mclk_ps * 3, (mclk_ps > 1540 ? 7500 : 6000)); 364 365 ip_rev = fsl_ddr_get_version(ctrl_num); 366 if (ip_rev >= 0x40700) { 367 /* 368 * MRS_CYC = max(tMRD, tMOD) 369 * tMRD = 4nCK (8nCK for RDIMM) 370 * tMOD = max(12nCK, 15ns) 371 */ 372 tmrd_mclk = max((unsigned int)12, 373 picos_to_mclk(ctrl_num, 15000)); 374 } else { 375 /* 376 * MRS_CYC = tMRD 377 * tMRD = 4nCK (8nCK for RDIMM) 378 */ 379 if (popts->registered_dimm_en) 380 tmrd_mclk = 8; 381 else 382 tmrd_mclk = 4; 383 } 384 385 /* set the turnaround time */ 386 387 /* 388 * for single quad-rank DIMM and two-slot DIMMs 389 * to avoid ODT overlap 390 */ 391 odt_overlap = avoid_odt_overlap(dimm_params); 392 switch (odt_overlap) { 393 case 2: 394 twwt_mclk = 2; 395 trrt_mclk = 1; 396 break; 397 case 1: 398 twwt_mclk = 1; 399 trrt_mclk = 0; 400 break; 401 default: 402 break; 403 } 404 405 /* for faster clock, need more time for data setup */ 406 trwt_mclk = (data_rate/1000000 > 1800) ? 2 : 1; 407 408 if ((data_rate/1000000 > 1150) || (popts->memctl_interleaving)) 409 twrt_mclk = 1; 410 411 if (popts->dynamic_power == 0) { /* powerdown is not used */ 412 act_pd_exit_mclk = 1; 413 pre_pd_exit_mclk = 1; 414 taxpd_mclk = 1; 415 } else { 416 /* act_pd_exit_mclk = tXARD, see above */ 417 act_pd_exit_mclk = picos_to_mclk(ctrl_num, txp); 418 /* Mode register MR0[A12] is '1' - fast exit */ 419 pre_pd_exit_mclk = act_pd_exit_mclk; 420 taxpd_mclk = 1; 421 } 422 #else /* CONFIG_SYS_FSL_DDR2 */ 423 /* 424 * (tXARD and tXARDS). Empirical? 425 * tXARD = 2 for DDR2 426 * tXP=2 427 * tAXPD=8 428 */ 429 act_pd_exit_mclk = 2; 430 pre_pd_exit_mclk = 2; 431 taxpd_mclk = 8; 432 tmrd_mclk = 2; 433 #endif 434 435 if (popts->trwt_override) 436 trwt_mclk = popts->trwt; 437 438 ddr->timing_cfg_0 = (0 439 | ((trwt_mclk & 0x3) << 30) /* RWT */ 440 | ((twrt_mclk & 0x3) << 28) /* WRT */ 441 | ((trrt_mclk & 0x3) << 26) /* RRT */ 442 | ((twwt_mclk & 0x3) << 24) /* WWT */ 443 | ((act_pd_exit_mclk & 0xf) << 20) /* ACT_PD_EXIT */ 444 | ((pre_pd_exit_mclk & 0xF) << 16) /* PRE_PD_EXIT */ 445 | ((taxpd_mclk & 0xf) << 8) /* ODT_PD_EXIT */ 446 | ((tmrd_mclk & 0x1f) << 0) /* MRS_CYC */ 447 ); 448 debug("FSLDDR: timing_cfg_0 = 0x%08x\n", ddr->timing_cfg_0); 449 } 450 #endif /* !defined(CONFIG_SYS_FSL_DDR1) */ 451 452 /* DDR SDRAM Timing Configuration 3 (TIMING_CFG_3) */ 453 static void set_timing_cfg_3(const unsigned int ctrl_num, 454 fsl_ddr_cfg_regs_t *ddr, 455 const memctl_options_t *popts, 456 const common_timing_params_t *common_dimm, 457 unsigned int cas_latency, 458 unsigned int additive_latency) 459 { 460 /* Extended precharge to activate interval (tRP) */ 461 unsigned int ext_pretoact = 0; 462 /* Extended Activate to precharge interval (tRAS) */ 463 unsigned int ext_acttopre = 0; 464 /* Extended activate to read/write interval (tRCD) */ 465 unsigned int ext_acttorw = 0; 466 /* Extended refresh recovery time (tRFC) */ 467 unsigned int ext_refrec; 468 /* Extended MCAS latency from READ cmd */ 469 unsigned int ext_caslat = 0; 470 /* Extended additive latency */ 471 unsigned int ext_add_lat = 0; 472 /* Extended last data to precharge interval (tWR) */ 473 unsigned int ext_wrrec = 0; 474 /* Control Adjust */ 475 unsigned int cntl_adj = 0; 476 477 ext_pretoact = picos_to_mclk(ctrl_num, common_dimm->trp_ps) >> 4; 478 ext_acttopre = picos_to_mclk(ctrl_num, common_dimm->tras_ps) >> 4; 479 ext_acttorw = picos_to_mclk(ctrl_num, common_dimm->trcd_ps) >> 4; 480 ext_caslat = (2 * cas_latency - 1) >> 4; 481 ext_add_lat = additive_latency >> 4; 482 #ifdef CONFIG_SYS_FSL_DDR4 483 ext_refrec = (picos_to_mclk(ctrl_num, common_dimm->trfc1_ps) - 8) >> 4; 484 #else 485 ext_refrec = (picos_to_mclk(ctrl_num, common_dimm->trfc_ps) - 8) >> 4; 486 /* ext_wrrec only deals with 16 clock and above, or 14 with OTF */ 487 #endif 488 ext_wrrec = (picos_to_mclk(ctrl_num, common_dimm->twr_ps) + 489 (popts->otf_burst_chop_en ? 2 : 0)) >> 4; 490 491 ddr->timing_cfg_3 = (0 492 | ((ext_pretoact & 0x1) << 28) 493 | ((ext_acttopre & 0x3) << 24) 494 | ((ext_acttorw & 0x1) << 22) 495 | ((ext_refrec & 0x3F) << 16) 496 | ((ext_caslat & 0x3) << 12) 497 | ((ext_add_lat & 0x1) << 10) 498 | ((ext_wrrec & 0x1) << 8) 499 | ((cntl_adj & 0x7) << 0) 500 ); 501 debug("FSLDDR: timing_cfg_3 = 0x%08x\n", ddr->timing_cfg_3); 502 } 503 504 /* DDR SDRAM Timing Configuration 1 (TIMING_CFG_1) */ 505 static void set_timing_cfg_1(const unsigned int ctrl_num, 506 fsl_ddr_cfg_regs_t *ddr, 507 const memctl_options_t *popts, 508 const common_timing_params_t *common_dimm, 509 unsigned int cas_latency) 510 { 511 /* Precharge-to-activate interval (tRP) */ 512 unsigned char pretoact_mclk; 513 /* Activate to precharge interval (tRAS) */ 514 unsigned char acttopre_mclk; 515 /* Activate to read/write interval (tRCD) */ 516 unsigned char acttorw_mclk; 517 /* CASLAT */ 518 unsigned char caslat_ctrl; 519 /* Refresh recovery time (tRFC) ; trfc_low */ 520 unsigned char refrec_ctrl; 521 /* Last data to precharge minimum interval (tWR) */ 522 unsigned char wrrec_mclk; 523 /* Activate-to-activate interval (tRRD) */ 524 unsigned char acttoact_mclk; 525 /* Last write data pair to read command issue interval (tWTR) */ 526 unsigned char wrtord_mclk; 527 #ifdef CONFIG_SYS_FSL_DDR4 528 /* DDR4 supports 10, 12, 14, 16, 18, 20, 24 */ 529 static const u8 wrrec_table[] = { 530 10, 10, 10, 10, 10, 531 10, 10, 10, 10, 10, 532 12, 12, 14, 14, 16, 533 16, 18, 18, 20, 20, 534 24, 24, 24, 24}; 535 #else 536 /* DDR_SDRAM_MODE doesn't support 9,11,13,15 */ 537 static const u8 wrrec_table[] = { 538 1, 2, 3, 4, 5, 6, 7, 8, 10, 10, 12, 12, 14, 14, 0, 0}; 539 #endif 540 541 pretoact_mclk = picos_to_mclk(ctrl_num, common_dimm->trp_ps); 542 acttopre_mclk = picos_to_mclk(ctrl_num, common_dimm->tras_ps); 543 acttorw_mclk = picos_to_mclk(ctrl_num, common_dimm->trcd_ps); 544 545 /* 546 * Translate CAS Latency to a DDR controller field value: 547 * 548 * CAS Lat DDR I DDR II Ctrl 549 * Clocks SPD Bit SPD Bit Value 550 * ------- ------- ------- ----- 551 * 1.0 0 0001 552 * 1.5 1 0010 553 * 2.0 2 2 0011 554 * 2.5 3 0100 555 * 3.0 4 3 0101 556 * 3.5 5 0110 557 * 4.0 4 0111 558 * 4.5 1000 559 * 5.0 5 1001 560 */ 561 #if defined(CONFIG_SYS_FSL_DDR1) 562 caslat_ctrl = (cas_latency + 1) & 0x07; 563 #elif defined(CONFIG_SYS_FSL_DDR2) 564 caslat_ctrl = 2 * cas_latency - 1; 565 #else 566 /* 567 * if the CAS latency more than 8 cycle, 568 * we need set extend bit for it at 569 * TIMING_CFG_3[EXT_CASLAT] 570 */ 571 if (fsl_ddr_get_version(ctrl_num) <= 0x40400) 572 caslat_ctrl = 2 * cas_latency - 1; 573 else 574 caslat_ctrl = (cas_latency - 1) << 1; 575 #endif 576 577 #ifdef CONFIG_SYS_FSL_DDR4 578 refrec_ctrl = picos_to_mclk(ctrl_num, common_dimm->trfc1_ps) - 8; 579 wrrec_mclk = picos_to_mclk(ctrl_num, common_dimm->twr_ps); 580 acttoact_mclk = max(picos_to_mclk(ctrl_num, common_dimm->trrds_ps), 4U); 581 wrtord_mclk = max(2U, picos_to_mclk(ctrl_num, 2500)); 582 if ((wrrec_mclk < 1) || (wrrec_mclk > 24)) 583 printf("Error: WRREC doesn't support %d clocks\n", wrrec_mclk); 584 else 585 wrrec_mclk = wrrec_table[wrrec_mclk - 1]; 586 #else 587 refrec_ctrl = picos_to_mclk(ctrl_num, common_dimm->trfc_ps) - 8; 588 wrrec_mclk = picos_to_mclk(ctrl_num, common_dimm->twr_ps); 589 acttoact_mclk = picos_to_mclk(ctrl_num, common_dimm->trrd_ps); 590 wrtord_mclk = picos_to_mclk(ctrl_num, common_dimm->twtr_ps); 591 if ((wrrec_mclk < 1) || (wrrec_mclk > 16)) 592 printf("Error: WRREC doesn't support %d clocks\n", wrrec_mclk); 593 else 594 wrrec_mclk = wrrec_table[wrrec_mclk - 1]; 595 #endif 596 if (popts->otf_burst_chop_en) 597 wrrec_mclk += 2; 598 599 /* 600 * JEDEC has min requirement for tRRD 601 */ 602 #if defined(CONFIG_SYS_FSL_DDR3) 603 if (acttoact_mclk < 4) 604 acttoact_mclk = 4; 605 #endif 606 /* 607 * JEDEC has some min requirements for tWTR 608 */ 609 #if defined(CONFIG_SYS_FSL_DDR2) 610 if (wrtord_mclk < 2) 611 wrtord_mclk = 2; 612 #elif defined(CONFIG_SYS_FSL_DDR3) 613 if (wrtord_mclk < 4) 614 wrtord_mclk = 4; 615 #endif 616 if (popts->otf_burst_chop_en) 617 wrtord_mclk += 2; 618 619 ddr->timing_cfg_1 = (0 620 | ((pretoact_mclk & 0x0F) << 28) 621 | ((acttopre_mclk & 0x0F) << 24) 622 | ((acttorw_mclk & 0xF) << 20) 623 | ((caslat_ctrl & 0xF) << 16) 624 | ((refrec_ctrl & 0xF) << 12) 625 | ((wrrec_mclk & 0x0F) << 8) 626 | ((acttoact_mclk & 0x0F) << 4) 627 | ((wrtord_mclk & 0x0F) << 0) 628 ); 629 debug("FSLDDR: timing_cfg_1 = 0x%08x\n", ddr->timing_cfg_1); 630 } 631 632 /* DDR SDRAM Timing Configuration 2 (TIMING_CFG_2) */ 633 static void set_timing_cfg_2(const unsigned int ctrl_num, 634 fsl_ddr_cfg_regs_t *ddr, 635 const memctl_options_t *popts, 636 const common_timing_params_t *common_dimm, 637 unsigned int cas_latency, 638 unsigned int additive_latency) 639 { 640 /* Additive latency */ 641 unsigned char add_lat_mclk; 642 /* CAS-to-preamble override */ 643 unsigned short cpo; 644 /* Write latency */ 645 unsigned char wr_lat; 646 /* Read to precharge (tRTP) */ 647 unsigned char rd_to_pre; 648 /* Write command to write data strobe timing adjustment */ 649 unsigned char wr_data_delay; 650 /* Minimum CKE pulse width (tCKE) */ 651 unsigned char cke_pls; 652 /* Window for four activates (tFAW) */ 653 unsigned short four_act; 654 #ifdef CONFIG_SYS_FSL_DDR3 655 const unsigned int mclk_ps = get_memory_clk_period_ps(ctrl_num); 656 #endif 657 658 /* FIXME add check that this must be less than acttorw_mclk */ 659 add_lat_mclk = additive_latency; 660 cpo = popts->cpo_override; 661 662 #if defined(CONFIG_SYS_FSL_DDR1) 663 /* 664 * This is a lie. It should really be 1, but if it is 665 * set to 1, bits overlap into the old controller's 666 * otherwise unused ACSM field. If we leave it 0, then 667 * the HW will magically treat it as 1 for DDR 1. Oh Yea. 668 */ 669 wr_lat = 0; 670 #elif defined(CONFIG_SYS_FSL_DDR2) 671 wr_lat = cas_latency - 1; 672 #else 673 wr_lat = compute_cas_write_latency(ctrl_num); 674 #endif 675 676 #ifdef CONFIG_SYS_FSL_DDR4 677 rd_to_pre = picos_to_mclk(ctrl_num, 7500); 678 #else 679 rd_to_pre = picos_to_mclk(ctrl_num, common_dimm->trtp_ps); 680 #endif 681 /* 682 * JEDEC has some min requirements for tRTP 683 */ 684 #if defined(CONFIG_SYS_FSL_DDR2) 685 if (rd_to_pre < 2) 686 rd_to_pre = 2; 687 #elif defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4) 688 if (rd_to_pre < 4) 689 rd_to_pre = 4; 690 #endif 691 if (popts->otf_burst_chop_en) 692 rd_to_pre += 2; /* according to UM */ 693 694 wr_data_delay = popts->write_data_delay; 695 #ifdef CONFIG_SYS_FSL_DDR4 696 cpo = 0; 697 cke_pls = max(3U, picos_to_mclk(ctrl_num, 5000)); 698 #elif defined(CONFIG_SYS_FSL_DDR3) 699 /* 700 * cke pulse = max(3nCK, 7.5ns) for DDR3-800 701 * max(3nCK, 5.625ns) for DDR3-1066, 1333 702 * max(3nCK, 5ns) for DDR3-1600, 1866, 2133 703 */ 704 cke_pls = max(3U, picos_to_mclk(ctrl_num, mclk_ps > 1870 ? 7500 : 705 (mclk_ps > 1245 ? 5625 : 5000))); 706 #else 707 cke_pls = FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR; 708 #endif 709 four_act = picos_to_mclk(ctrl_num, 710 popts->tfaw_window_four_activates_ps); 711 712 ddr->timing_cfg_2 = (0 713 | ((add_lat_mclk & 0xf) << 28) 714 | ((cpo & 0x1f) << 23) 715 | ((wr_lat & 0xf) << 19) 716 | (((wr_lat & 0x10) >> 4) << 18) 717 | ((rd_to_pre & RD_TO_PRE_MASK) << RD_TO_PRE_SHIFT) 718 | ((wr_data_delay & WR_DATA_DELAY_MASK) << WR_DATA_DELAY_SHIFT) 719 | ((cke_pls & 0x7) << 6) 720 | ((four_act & 0x3f) << 0) 721 ); 722 debug("FSLDDR: timing_cfg_2 = 0x%08x\n", ddr->timing_cfg_2); 723 } 724 725 /* DDR SDRAM Register Control Word */ 726 static void set_ddr_sdram_rcw(const unsigned int ctrl_num, 727 fsl_ddr_cfg_regs_t *ddr, 728 const memctl_options_t *popts, 729 const common_timing_params_t *common_dimm) 730 { 731 unsigned int ddr_freq = get_ddr_freq(ctrl_num) / 1000000; 732 unsigned int rc0a, rc0f; 733 734 if (common_dimm->all_dimms_registered && 735 !common_dimm->all_dimms_unbuffered) { 736 if (popts->rcw_override) { 737 ddr->ddr_sdram_rcw_1 = popts->rcw_1; 738 ddr->ddr_sdram_rcw_2 = popts->rcw_2; 739 ddr->ddr_sdram_rcw_3 = popts->rcw_3; 740 } else { 741 rc0a = ddr_freq > 3200 ? 0x7 : 742 (ddr_freq > 2933 ? 0x6 : 743 (ddr_freq > 2666 ? 0x5 : 744 (ddr_freq > 2400 ? 0x4 : 745 (ddr_freq > 2133 ? 0x3 : 746 (ddr_freq > 1866 ? 0x2 : 747 (ddr_freq > 1600 ? 1 : 0)))))); 748 rc0f = ddr_freq > 3200 ? 0x3 : 749 (ddr_freq > 2400 ? 0x2 : 750 (ddr_freq > 2133 ? 0x1 : 0)); 751 ddr->ddr_sdram_rcw_1 = 752 common_dimm->rcw[0] << 28 | \ 753 common_dimm->rcw[1] << 24 | \ 754 common_dimm->rcw[2] << 20 | \ 755 common_dimm->rcw[3] << 16 | \ 756 common_dimm->rcw[4] << 12 | \ 757 common_dimm->rcw[5] << 8 | \ 758 common_dimm->rcw[6] << 4 | \ 759 common_dimm->rcw[7]; 760 ddr->ddr_sdram_rcw_2 = 761 common_dimm->rcw[8] << 28 | \ 762 common_dimm->rcw[9] << 24 | \ 763 rc0a << 20 | \ 764 common_dimm->rcw[11] << 16 | \ 765 common_dimm->rcw[12] << 12 | \ 766 common_dimm->rcw[13] << 8 | \ 767 common_dimm->rcw[14] << 4 | \ 768 rc0f; 769 ddr->ddr_sdram_rcw_3 = 770 ((ddr_freq - 1260 + 19) / 20) << 8; 771 } 772 debug("FSLDDR: ddr_sdram_rcw_1 = 0x%08x\n", 773 ddr->ddr_sdram_rcw_1); 774 debug("FSLDDR: ddr_sdram_rcw_2 = 0x%08x\n", 775 ddr->ddr_sdram_rcw_2); 776 debug("FSLDDR: ddr_sdram_rcw_3 = 0x%08x\n", 777 ddr->ddr_sdram_rcw_3); 778 } 779 } 780 781 /* DDR SDRAM control configuration (DDR_SDRAM_CFG) */ 782 static void set_ddr_sdram_cfg(fsl_ddr_cfg_regs_t *ddr, 783 const memctl_options_t *popts, 784 const common_timing_params_t *common_dimm) 785 { 786 unsigned int mem_en; /* DDR SDRAM interface logic enable */ 787 unsigned int sren; /* Self refresh enable (during sleep) */ 788 unsigned int ecc_en; /* ECC enable. */ 789 unsigned int rd_en; /* Registered DIMM enable */ 790 unsigned int sdram_type; /* Type of SDRAM */ 791 unsigned int dyn_pwr; /* Dynamic power management mode */ 792 unsigned int dbw; /* DRAM dta bus width */ 793 unsigned int eight_be = 0; /* 8-beat burst enable, DDR2 is zero */ 794 unsigned int ncap = 0; /* Non-concurrent auto-precharge */ 795 unsigned int threet_en; /* Enable 3T timing */ 796 unsigned int twot_en; /* Enable 2T timing */ 797 unsigned int ba_intlv_ctl; /* Bank (CS) interleaving control */ 798 unsigned int x32_en = 0; /* x32 enable */ 799 unsigned int pchb8 = 0; /* precharge bit 8 enable */ 800 unsigned int hse; /* Global half strength override */ 801 unsigned int acc_ecc_en = 0; /* Accumulated ECC enable */ 802 unsigned int mem_halt = 0; /* memory controller halt */ 803 unsigned int bi = 0; /* Bypass initialization */ 804 805 mem_en = 1; 806 sren = popts->self_refresh_in_sleep; 807 if (common_dimm->all_dimms_ecc_capable) { 808 /* Allow setting of ECC only if all DIMMs are ECC. */ 809 ecc_en = popts->ecc_mode; 810 } else { 811 ecc_en = 0; 812 } 813 814 if (common_dimm->all_dimms_registered && 815 !common_dimm->all_dimms_unbuffered) { 816 rd_en = 1; 817 twot_en = 0; 818 } else { 819 rd_en = 0; 820 twot_en = popts->twot_en; 821 } 822 823 sdram_type = CONFIG_FSL_SDRAM_TYPE; 824 825 dyn_pwr = popts->dynamic_power; 826 dbw = popts->data_bus_width; 827 /* 8-beat burst enable DDR-III case 828 * we must clear it when use the on-the-fly mode, 829 * must set it when use the 32-bits bus mode. 830 */ 831 if ((sdram_type == SDRAM_TYPE_DDR3) || 832 (sdram_type == SDRAM_TYPE_DDR4)) { 833 if (popts->burst_length == DDR_BL8) 834 eight_be = 1; 835 if (popts->burst_length == DDR_OTF) 836 eight_be = 0; 837 if (dbw == 0x1) 838 eight_be = 1; 839 } 840 841 threet_en = popts->threet_en; 842 ba_intlv_ctl = popts->ba_intlv_ctl; 843 hse = popts->half_strength_driver_enable; 844 845 /* set when ddr bus width < 64 */ 846 acc_ecc_en = (dbw != 0 && ecc_en == 1) ? 1 : 0; 847 848 ddr->ddr_sdram_cfg = (0 849 | ((mem_en & 0x1) << 31) 850 | ((sren & 0x1) << 30) 851 | ((ecc_en & 0x1) << 29) 852 | ((rd_en & 0x1) << 28) 853 | ((sdram_type & 0x7) << 24) 854 | ((dyn_pwr & 0x1) << 21) 855 | ((dbw & 0x3) << 19) 856 | ((eight_be & 0x1) << 18) 857 | ((ncap & 0x1) << 17) 858 | ((threet_en & 0x1) << 16) 859 | ((twot_en & 0x1) << 15) 860 | ((ba_intlv_ctl & 0x7F) << 8) 861 | ((x32_en & 0x1) << 5) 862 | ((pchb8 & 0x1) << 4) 863 | ((hse & 0x1) << 3) 864 | ((acc_ecc_en & 0x1) << 2) 865 | ((mem_halt & 0x1) << 1) 866 | ((bi & 0x1) << 0) 867 ); 868 debug("FSLDDR: ddr_sdram_cfg = 0x%08x\n", ddr->ddr_sdram_cfg); 869 } 870 871 /* DDR SDRAM control configuration 2 (DDR_SDRAM_CFG_2) */ 872 static void set_ddr_sdram_cfg_2(const unsigned int ctrl_num, 873 fsl_ddr_cfg_regs_t *ddr, 874 const memctl_options_t *popts, 875 const unsigned int unq_mrs_en) 876 { 877 unsigned int frc_sr = 0; /* Force self refresh */ 878 unsigned int sr_ie = 0; /* Self-refresh interrupt enable */ 879 unsigned int odt_cfg = 0; /* ODT configuration */ 880 unsigned int num_pr; /* Number of posted refreshes */ 881 unsigned int slow = 0; /* DDR will be run less than 1250 */ 882 unsigned int x4_en = 0; /* x4 DRAM enable */ 883 unsigned int obc_cfg; /* On-The-Fly Burst Chop Cfg */ 884 unsigned int ap_en; /* Address Parity Enable */ 885 unsigned int d_init; /* DRAM data initialization */ 886 unsigned int rcw_en = 0; /* Register Control Word Enable */ 887 unsigned int md_en = 0; /* Mirrored DIMM Enable */ 888 unsigned int qd_en = 0; /* quad-rank DIMM Enable */ 889 int i; 890 #ifndef CONFIG_SYS_FSL_DDR4 891 unsigned int dll_rst_dis = 1; /* DLL reset disable */ 892 unsigned int dqs_cfg; /* DQS configuration */ 893 894 dqs_cfg = popts->dqs_config; 895 #endif 896 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 897 if (popts->cs_local_opts[i].odt_rd_cfg 898 || popts->cs_local_opts[i].odt_wr_cfg) { 899 odt_cfg = SDRAM_CFG2_ODT_ONLY_READ; 900 break; 901 } 902 } 903 sr_ie = popts->self_refresh_interrupt_en; 904 num_pr = popts->package_3ds + 1; 905 906 /* 907 * 8572 manual says 908 * {TIMING_CFG_1[PRETOACT] 909 * + [DDR_SDRAM_CFG_2[NUM_PR] 910 * * ({EXT_REFREC || REFREC} + 8 + 2)]} 911 * << DDR_SDRAM_INTERVAL[REFINT] 912 */ 913 #if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4) 914 obc_cfg = popts->otf_burst_chop_en; 915 #else 916 obc_cfg = 0; 917 #endif 918 919 #if (CONFIG_SYS_FSL_DDR_VER >= FSL_DDR_VER_4_7) 920 slow = get_ddr_freq(ctrl_num) < 1249000000; 921 #endif 922 923 if (popts->registered_dimm_en) 924 rcw_en = 1; 925 926 /* DDR4 can have address parity for UDIMM and discrete */ 927 if ((CONFIG_FSL_SDRAM_TYPE != SDRAM_TYPE_DDR4) && 928 (!popts->registered_dimm_en)) { 929 ap_en = 0; 930 } else { 931 ap_en = popts->ap_en; 932 } 933 934 x4_en = popts->x4_en ? 1 : 0; 935 936 #if defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER) 937 /* Use the DDR controller to auto initialize memory. */ 938 d_init = popts->ecc_init_using_memctl; 939 ddr->ddr_data_init = CONFIG_MEM_INIT_VALUE; 940 debug("DDR: ddr_data_init = 0x%08x\n", ddr->ddr_data_init); 941 #else 942 /* Memory will be initialized via DMA, or not at all. */ 943 d_init = 0; 944 #endif 945 946 #if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4) 947 md_en = popts->mirrored_dimm; 948 #endif 949 qd_en = popts->quad_rank_present ? 1 : 0; 950 ddr->ddr_sdram_cfg_2 = (0 951 | ((frc_sr & 0x1) << 31) 952 | ((sr_ie & 0x1) << 30) 953 #ifndef CONFIG_SYS_FSL_DDR4 954 | ((dll_rst_dis & 0x1) << 29) 955 | ((dqs_cfg & 0x3) << 26) 956 #endif 957 | ((odt_cfg & 0x3) << 21) 958 | ((num_pr & 0xf) << 12) 959 | ((slow & 1) << 11) 960 | (x4_en << 10) 961 | (qd_en << 9) 962 | (unq_mrs_en << 8) 963 | ((obc_cfg & 0x1) << 6) 964 | ((ap_en & 0x1) << 5) 965 | ((d_init & 0x1) << 4) 966 | ((rcw_en & 0x1) << 2) 967 | ((md_en & 0x1) << 0) 968 ); 969 debug("FSLDDR: ddr_sdram_cfg_2 = 0x%08x\n", ddr->ddr_sdram_cfg_2); 970 } 971 972 #ifdef CONFIG_SYS_FSL_DDR4 973 /* DDR SDRAM Mode configuration 2 (DDR_SDRAM_MODE_2) */ 974 static void set_ddr_sdram_mode_2(const unsigned int ctrl_num, 975 fsl_ddr_cfg_regs_t *ddr, 976 const memctl_options_t *popts, 977 const common_timing_params_t *common_dimm, 978 const unsigned int unq_mrs_en) 979 { 980 unsigned short esdmode2 = 0; /* Extended SDRAM mode 2 */ 981 unsigned short esdmode3 = 0; /* Extended SDRAM mode 3 */ 982 int i; 983 unsigned int wr_crc = 0; /* Disable */ 984 unsigned int rtt_wr = 0; /* Rtt_WR - dynamic ODT off */ 985 unsigned int srt = 0; /* self-refresh temerature, normal range */ 986 unsigned int cwl = compute_cas_write_latency(ctrl_num) - 9; 987 unsigned int mpr = 0; /* serial */ 988 unsigned int wc_lat; 989 const unsigned int mclk_ps = get_memory_clk_period_ps(ctrl_num); 990 991 if (popts->rtt_override) 992 rtt_wr = popts->rtt_wr_override_value; 993 else 994 rtt_wr = popts->cs_local_opts[0].odt_rtt_wr; 995 996 if (common_dimm->extended_op_srt) 997 srt = common_dimm->extended_op_srt; 998 999 esdmode2 = (0 1000 | ((wr_crc & 0x1) << 12) 1001 | ((rtt_wr & 0x3) << 9) 1002 | ((srt & 0x3) << 6) 1003 | ((cwl & 0x7) << 3)); 1004 1005 if (mclk_ps >= 1250) 1006 wc_lat = 0; 1007 else if (mclk_ps >= 833) 1008 wc_lat = 1; 1009 else 1010 wc_lat = 2; 1011 1012 esdmode3 = (0 1013 | ((mpr & 0x3) << 11) 1014 | ((wc_lat & 0x3) << 9)); 1015 1016 ddr->ddr_sdram_mode_2 = (0 1017 | ((esdmode2 & 0xFFFF) << 16) 1018 | ((esdmode3 & 0xFFFF) << 0) 1019 ); 1020 debug("FSLDDR: ddr_sdram_mode_2 = 0x%08x\n", ddr->ddr_sdram_mode_2); 1021 1022 if (unq_mrs_en) { /* unique mode registers are supported */ 1023 for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 1024 if (popts->rtt_override) 1025 rtt_wr = popts->rtt_wr_override_value; 1026 else 1027 rtt_wr = popts->cs_local_opts[i].odt_rtt_wr; 1028 1029 esdmode2 &= 0xF9FF; /* clear bit 10, 9 */ 1030 esdmode2 |= (rtt_wr & 0x3) << 9; 1031 switch (i) { 1032 case 1: 1033 ddr->ddr_sdram_mode_4 = (0 1034 | ((esdmode2 & 0xFFFF) << 16) 1035 | ((esdmode3 & 0xFFFF) << 0) 1036 ); 1037 break; 1038 case 2: 1039 ddr->ddr_sdram_mode_6 = (0 1040 | ((esdmode2 & 0xFFFF) << 16) 1041 | ((esdmode3 & 0xFFFF) << 0) 1042 ); 1043 break; 1044 case 3: 1045 ddr->ddr_sdram_mode_8 = (0 1046 | ((esdmode2 & 0xFFFF) << 16) 1047 | ((esdmode3 & 0xFFFF) << 0) 1048 ); 1049 break; 1050 } 1051 } 1052 debug("FSLDDR: ddr_sdram_mode_4 = 0x%08x\n", 1053 ddr->ddr_sdram_mode_4); 1054 debug("FSLDDR: ddr_sdram_mode_6 = 0x%08x\n", 1055 ddr->ddr_sdram_mode_6); 1056 debug("FSLDDR: ddr_sdram_mode_8 = 0x%08x\n", 1057 ddr->ddr_sdram_mode_8); 1058 } 1059 } 1060 #elif defined(CONFIG_SYS_FSL_DDR3) 1061 /* DDR SDRAM Mode configuration 2 (DDR_SDRAM_MODE_2) */ 1062 static void set_ddr_sdram_mode_2(const unsigned int ctrl_num, 1063 fsl_ddr_cfg_regs_t *ddr, 1064 const memctl_options_t *popts, 1065 const common_timing_params_t *common_dimm, 1066 const unsigned int unq_mrs_en) 1067 { 1068 unsigned short esdmode2 = 0; /* Extended SDRAM mode 2 */ 1069 unsigned short esdmode3 = 0; /* Extended SDRAM mode 3 */ 1070 int i; 1071 unsigned int rtt_wr = 0; /* Rtt_WR - dynamic ODT off */ 1072 unsigned int srt = 0; /* self-refresh temerature, normal range */ 1073 unsigned int asr = 0; /* auto self-refresh disable */ 1074 unsigned int cwl = compute_cas_write_latency(ctrl_num) - 5; 1075 unsigned int pasr = 0; /* partial array self refresh disable */ 1076 1077 if (popts->rtt_override) 1078 rtt_wr = popts->rtt_wr_override_value; 1079 else 1080 rtt_wr = popts->cs_local_opts[0].odt_rtt_wr; 1081 1082 if (common_dimm->extended_op_srt) 1083 srt = common_dimm->extended_op_srt; 1084 1085 esdmode2 = (0 1086 | ((rtt_wr & 0x3) << 9) 1087 | ((srt & 0x1) << 7) 1088 | ((asr & 0x1) << 6) 1089 | ((cwl & 0x7) << 3) 1090 | ((pasr & 0x7) << 0)); 1091 ddr->ddr_sdram_mode_2 = (0 1092 | ((esdmode2 & 0xFFFF) << 16) 1093 | ((esdmode3 & 0xFFFF) << 0) 1094 ); 1095 debug("FSLDDR: ddr_sdram_mode_2 = 0x%08x\n", ddr->ddr_sdram_mode_2); 1096 1097 if (unq_mrs_en) { /* unique mode registers are supported */ 1098 for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 1099 if (popts->rtt_override) 1100 rtt_wr = popts->rtt_wr_override_value; 1101 else 1102 rtt_wr = popts->cs_local_opts[i].odt_rtt_wr; 1103 1104 esdmode2 &= 0xF9FF; /* clear bit 10, 9 */ 1105 esdmode2 |= (rtt_wr & 0x3) << 9; 1106 switch (i) { 1107 case 1: 1108 ddr->ddr_sdram_mode_4 = (0 1109 | ((esdmode2 & 0xFFFF) << 16) 1110 | ((esdmode3 & 0xFFFF) << 0) 1111 ); 1112 break; 1113 case 2: 1114 ddr->ddr_sdram_mode_6 = (0 1115 | ((esdmode2 & 0xFFFF) << 16) 1116 | ((esdmode3 & 0xFFFF) << 0) 1117 ); 1118 break; 1119 case 3: 1120 ddr->ddr_sdram_mode_8 = (0 1121 | ((esdmode2 & 0xFFFF) << 16) 1122 | ((esdmode3 & 0xFFFF) << 0) 1123 ); 1124 break; 1125 } 1126 } 1127 debug("FSLDDR: ddr_sdram_mode_4 = 0x%08x\n", 1128 ddr->ddr_sdram_mode_4); 1129 debug("FSLDDR: ddr_sdram_mode_6 = 0x%08x\n", 1130 ddr->ddr_sdram_mode_6); 1131 debug("FSLDDR: ddr_sdram_mode_8 = 0x%08x\n", 1132 ddr->ddr_sdram_mode_8); 1133 } 1134 } 1135 1136 #else /* for DDR2 and DDR1 */ 1137 /* DDR SDRAM Mode configuration 2 (DDR_SDRAM_MODE_2) */ 1138 static void set_ddr_sdram_mode_2(const unsigned int ctrl_num, 1139 fsl_ddr_cfg_regs_t *ddr, 1140 const memctl_options_t *popts, 1141 const common_timing_params_t *common_dimm, 1142 const unsigned int unq_mrs_en) 1143 { 1144 unsigned short esdmode2 = 0; /* Extended SDRAM mode 2 */ 1145 unsigned short esdmode3 = 0; /* Extended SDRAM mode 3 */ 1146 1147 ddr->ddr_sdram_mode_2 = (0 1148 | ((esdmode2 & 0xFFFF) << 16) 1149 | ((esdmode3 & 0xFFFF) << 0) 1150 ); 1151 debug("FSLDDR: ddr_sdram_mode_2 = 0x%08x\n", ddr->ddr_sdram_mode_2); 1152 } 1153 #endif 1154 1155 #ifdef CONFIG_SYS_FSL_DDR4 1156 /* DDR SDRAM Mode configuration 9 (DDR_SDRAM_MODE_9) */ 1157 static void set_ddr_sdram_mode_9(fsl_ddr_cfg_regs_t *ddr, 1158 const memctl_options_t *popts, 1159 const common_timing_params_t *common_dimm, 1160 const unsigned int unq_mrs_en) 1161 { 1162 int i; 1163 unsigned short esdmode4 = 0; /* Extended SDRAM mode 4 */ 1164 unsigned short esdmode5; /* Extended SDRAM mode 5 */ 1165 int rtt_park = 0; 1166 bool four_cs = false; 1167 const unsigned int mclk_ps = get_memory_clk_period_ps(0); 1168 1169 #if CONFIG_CHIP_SELECTS_PER_CTRL == 4 1170 if ((ddr->cs[0].config & SDRAM_CS_CONFIG_EN) && 1171 (ddr->cs[1].config & SDRAM_CS_CONFIG_EN) && 1172 (ddr->cs[2].config & SDRAM_CS_CONFIG_EN) && 1173 (ddr->cs[3].config & SDRAM_CS_CONFIG_EN)) 1174 four_cs = true; 1175 #endif 1176 if (ddr->cs[0].config & SDRAM_CS_CONFIG_EN) { 1177 esdmode5 = 0x00000500; /* Data mask enable, RTT_PARK CS0 */ 1178 rtt_park = four_cs ? 0 : 1; 1179 } else { 1180 esdmode5 = 0x00000400; /* Data mask enabled */ 1181 } 1182 1183 /* 1184 * For DDR3, set C/A latency if address parity is enabled. 1185 * For DDR4, set C/A latency for UDIMM only. For RDIMM the delay is 1186 * handled by register chip and RCW settings. 1187 */ 1188 if ((ddr->ddr_sdram_cfg_2 & SDRAM_CFG2_AP_EN) && 1189 ((CONFIG_FSL_SDRAM_TYPE != SDRAM_TYPE_DDR4) || 1190 !popts->registered_dimm_en)) { 1191 if (mclk_ps >= 935) { 1192 /* for DDR4-1600/1866/2133 */ 1193 esdmode5 |= DDR_MR5_CA_PARITY_LAT_4_CLK; 1194 } else if (mclk_ps >= 833) { 1195 /* for DDR4-2400 */ 1196 esdmode5 |= DDR_MR5_CA_PARITY_LAT_5_CLK; 1197 } else { 1198 printf("parity: mclk_ps = %d not supported\n", mclk_ps); 1199 } 1200 } 1201 1202 ddr->ddr_sdram_mode_9 = (0 1203 | ((esdmode4 & 0xffff) << 16) 1204 | ((esdmode5 & 0xffff) << 0) 1205 ); 1206 1207 /* Normally only the first enabled CS use 0x500, others use 0x400 1208 * But when four chip-selects are all enabled, all mode registers 1209 * need 0x500 to park. 1210 */ 1211 1212 debug("FSLDDR: ddr_sdram_mode_9 = 0x%08x\n", ddr->ddr_sdram_mode_9); 1213 if (unq_mrs_en) { /* unique mode registers are supported */ 1214 for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 1215 if (!rtt_park && 1216 (ddr->cs[i].config & SDRAM_CS_CONFIG_EN)) { 1217 esdmode5 |= 0x00000500; /* RTT_PARK */ 1218 rtt_park = four_cs ? 0 : 1; 1219 } else { 1220 esdmode5 = 0x00000400; 1221 } 1222 1223 if ((ddr->ddr_sdram_cfg_2 & SDRAM_CFG2_AP_EN) && 1224 ((CONFIG_FSL_SDRAM_TYPE != SDRAM_TYPE_DDR4) || 1225 !popts->registered_dimm_en)) { 1226 if (mclk_ps >= 935) { 1227 /* for DDR4-1600/1866/2133 */ 1228 esdmode5 |= DDR_MR5_CA_PARITY_LAT_4_CLK; 1229 } else if (mclk_ps >= 833) { 1230 /* for DDR4-2400 */ 1231 esdmode5 |= DDR_MR5_CA_PARITY_LAT_5_CLK; 1232 } else { 1233 printf("parity: mclk_ps = %d not supported\n", 1234 mclk_ps); 1235 } 1236 } 1237 1238 switch (i) { 1239 case 1: 1240 ddr->ddr_sdram_mode_11 = (0 1241 | ((esdmode4 & 0xFFFF) << 16) 1242 | ((esdmode5 & 0xFFFF) << 0) 1243 ); 1244 break; 1245 case 2: 1246 ddr->ddr_sdram_mode_13 = (0 1247 | ((esdmode4 & 0xFFFF) << 16) 1248 | ((esdmode5 & 0xFFFF) << 0) 1249 ); 1250 break; 1251 case 3: 1252 ddr->ddr_sdram_mode_15 = (0 1253 | ((esdmode4 & 0xFFFF) << 16) 1254 | ((esdmode5 & 0xFFFF) << 0) 1255 ); 1256 break; 1257 } 1258 } 1259 debug("FSLDDR: ddr_sdram_mode_11 = 0x%08x\n", 1260 ddr->ddr_sdram_mode_11); 1261 debug("FSLDDR: ddr_sdram_mode_13 = 0x%08x\n", 1262 ddr->ddr_sdram_mode_13); 1263 debug("FSLDDR: ddr_sdram_mode_15 = 0x%08x\n", 1264 ddr->ddr_sdram_mode_15); 1265 } 1266 } 1267 1268 /* DDR SDRAM Mode configuration 10 (DDR_SDRAM_MODE_10) */ 1269 static void set_ddr_sdram_mode_10(const unsigned int ctrl_num, 1270 fsl_ddr_cfg_regs_t *ddr, 1271 const memctl_options_t *popts, 1272 const common_timing_params_t *common_dimm, 1273 const unsigned int unq_mrs_en) 1274 { 1275 int i; 1276 unsigned short esdmode6 = 0; /* Extended SDRAM mode 6 */ 1277 unsigned short esdmode7 = 0; /* Extended SDRAM mode 7 */ 1278 unsigned int tccdl_min = picos_to_mclk(ctrl_num, common_dimm->tccdl_ps); 1279 1280 esdmode6 = ((tccdl_min - 4) & 0x7) << 10; 1281 1282 if (popts->ddr_cdr2 & DDR_CDR2_VREF_RANGE_2) 1283 esdmode6 |= 1 << 6; /* Range 2 */ 1284 1285 ddr->ddr_sdram_mode_10 = (0 1286 | ((esdmode6 & 0xffff) << 16) 1287 | ((esdmode7 & 0xffff) << 0) 1288 ); 1289 debug("FSLDDR: ddr_sdram_mode_10 = 0x%08x\n", ddr->ddr_sdram_mode_10); 1290 if (unq_mrs_en) { /* unique mode registers are supported */ 1291 for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 1292 switch (i) { 1293 case 1: 1294 ddr->ddr_sdram_mode_12 = (0 1295 | ((esdmode6 & 0xFFFF) << 16) 1296 | ((esdmode7 & 0xFFFF) << 0) 1297 ); 1298 break; 1299 case 2: 1300 ddr->ddr_sdram_mode_14 = (0 1301 | ((esdmode6 & 0xFFFF) << 16) 1302 | ((esdmode7 & 0xFFFF) << 0) 1303 ); 1304 break; 1305 case 3: 1306 ddr->ddr_sdram_mode_16 = (0 1307 | ((esdmode6 & 0xFFFF) << 16) 1308 | ((esdmode7 & 0xFFFF) << 0) 1309 ); 1310 break; 1311 } 1312 } 1313 debug("FSLDDR: ddr_sdram_mode_12 = 0x%08x\n", 1314 ddr->ddr_sdram_mode_12); 1315 debug("FSLDDR: ddr_sdram_mode_14 = 0x%08x\n", 1316 ddr->ddr_sdram_mode_14); 1317 debug("FSLDDR: ddr_sdram_mode_16 = 0x%08x\n", 1318 ddr->ddr_sdram_mode_16); 1319 } 1320 } 1321 1322 #endif 1323 1324 /* DDR SDRAM Interval Configuration (DDR_SDRAM_INTERVAL) */ 1325 static void set_ddr_sdram_interval(const unsigned int ctrl_num, 1326 fsl_ddr_cfg_regs_t *ddr, 1327 const memctl_options_t *popts, 1328 const common_timing_params_t *common_dimm) 1329 { 1330 unsigned int refint; /* Refresh interval */ 1331 unsigned int bstopre; /* Precharge interval */ 1332 1333 refint = picos_to_mclk(ctrl_num, common_dimm->refresh_rate_ps); 1334 1335 bstopre = popts->bstopre; 1336 1337 /* refint field used 0x3FFF in earlier controllers */ 1338 ddr->ddr_sdram_interval = (0 1339 | ((refint & 0xFFFF) << 16) 1340 | ((bstopre & 0x3FFF) << 0) 1341 ); 1342 debug("FSLDDR: ddr_sdram_interval = 0x%08x\n", ddr->ddr_sdram_interval); 1343 } 1344 1345 #ifdef CONFIG_SYS_FSL_DDR4 1346 /* DDR SDRAM Mode configuration set (DDR_SDRAM_MODE) */ 1347 static void set_ddr_sdram_mode(const unsigned int ctrl_num, 1348 fsl_ddr_cfg_regs_t *ddr, 1349 const memctl_options_t *popts, 1350 const common_timing_params_t *common_dimm, 1351 unsigned int cas_latency, 1352 unsigned int additive_latency, 1353 const unsigned int unq_mrs_en) 1354 { 1355 int i; 1356 unsigned short esdmode; /* Extended SDRAM mode */ 1357 unsigned short sdmode; /* SDRAM mode */ 1358 1359 /* Mode Register - MR1 */ 1360 unsigned int qoff = 0; /* Output buffer enable 0=yes, 1=no */ 1361 unsigned int tdqs_en = 0; /* TDQS Enable: 0=no, 1=yes */ 1362 unsigned int rtt; 1363 unsigned int wrlvl_en = 0; /* Write level enable: 0=no, 1=yes */ 1364 unsigned int al = 0; /* Posted CAS# additive latency (AL) */ 1365 unsigned int dic = 0; /* Output driver impedance, 40ohm */ 1366 unsigned int dll_en = 1; /* DLL Enable 1=Enable (Normal), 1367 0=Disable (Test/Debug) */ 1368 1369 /* Mode Register - MR0 */ 1370 unsigned int wr = 0; /* Write Recovery */ 1371 unsigned int dll_rst; /* DLL Reset */ 1372 unsigned int mode; /* Normal=0 or Test=1 */ 1373 unsigned int caslat = 4;/* CAS# latency, default set as 6 cycles */ 1374 /* BT: Burst Type (0=Nibble Sequential, 1=Interleaved) */ 1375 unsigned int bt; 1376 unsigned int bl; /* BL: Burst Length */ 1377 1378 unsigned int wr_mclk; 1379 /* DDR4 support WR 10, 12, 14, 16, 18, 20, 24 */ 1380 static const u8 wr_table[] = { 1381 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 6, 6}; 1382 /* DDR4 support CAS 9, 10, 11, 12, 13, 14, 15, 16, 18, 20, 22, 24 */ 1383 static const u8 cas_latency_table[] = { 1384 0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 1385 9, 9, 10, 10, 11, 11}; 1386 1387 if (popts->rtt_override) 1388 rtt = popts->rtt_override_value; 1389 else 1390 rtt = popts->cs_local_opts[0].odt_rtt_norm; 1391 1392 if (additive_latency == (cas_latency - 1)) 1393 al = 1; 1394 if (additive_latency == (cas_latency - 2)) 1395 al = 2; 1396 1397 if (popts->quad_rank_present) 1398 dic = 1; /* output driver impedance 240/7 ohm */ 1399 1400 /* 1401 * The esdmode value will also be used for writing 1402 * MR1 during write leveling for DDR3, although the 1403 * bits specifically related to the write leveling 1404 * scheme will be handled automatically by the DDR 1405 * controller. so we set the wrlvl_en = 0 here. 1406 */ 1407 esdmode = (0 1408 | ((qoff & 0x1) << 12) 1409 | ((tdqs_en & 0x1) << 11) 1410 | ((rtt & 0x7) << 8) 1411 | ((wrlvl_en & 0x1) << 7) 1412 | ((al & 0x3) << 3) 1413 | ((dic & 0x3) << 1) /* DIC field is split */ 1414 | ((dll_en & 0x1) << 0) 1415 ); 1416 1417 /* 1418 * DLL control for precharge PD 1419 * 0=slow exit DLL off (tXPDLL) 1420 * 1=fast exit DLL on (tXP) 1421 */ 1422 1423 wr_mclk = picos_to_mclk(ctrl_num, common_dimm->twr_ps); 1424 if (wr_mclk <= 24) { 1425 wr = wr_table[wr_mclk - 10]; 1426 } else { 1427 printf("Error: unsupported write recovery for mode register wr_mclk = %d\n", 1428 wr_mclk); 1429 } 1430 1431 dll_rst = 0; /* dll no reset */ 1432 mode = 0; /* normal mode */ 1433 1434 /* look up table to get the cas latency bits */ 1435 if (cas_latency >= 9 && cas_latency <= 24) 1436 caslat = cas_latency_table[cas_latency - 9]; 1437 else 1438 printf("Error: unsupported cas latency for mode register\n"); 1439 1440 bt = 0; /* Nibble sequential */ 1441 1442 switch (popts->burst_length) { 1443 case DDR_BL8: 1444 bl = 0; 1445 break; 1446 case DDR_OTF: 1447 bl = 1; 1448 break; 1449 case DDR_BC4: 1450 bl = 2; 1451 break; 1452 default: 1453 printf("Error: invalid burst length of %u specified. ", 1454 popts->burst_length); 1455 puts("Defaulting to on-the-fly BC4 or BL8 beats.\n"); 1456 bl = 1; 1457 break; 1458 } 1459 1460 sdmode = (0 1461 | ((wr & 0x7) << 9) 1462 | ((dll_rst & 0x1) << 8) 1463 | ((mode & 0x1) << 7) 1464 | (((caslat >> 1) & 0x7) << 4) 1465 | ((bt & 0x1) << 3) 1466 | ((caslat & 1) << 2) 1467 | ((bl & 0x3) << 0) 1468 ); 1469 1470 ddr->ddr_sdram_mode = (0 1471 | ((esdmode & 0xFFFF) << 16) 1472 | ((sdmode & 0xFFFF) << 0) 1473 ); 1474 1475 debug("FSLDDR: ddr_sdram_mode = 0x%08x\n", ddr->ddr_sdram_mode); 1476 1477 if (unq_mrs_en) { /* unique mode registers are supported */ 1478 for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 1479 if (popts->rtt_override) 1480 rtt = popts->rtt_override_value; 1481 else 1482 rtt = popts->cs_local_opts[i].odt_rtt_norm; 1483 1484 esdmode &= 0xF8FF; /* clear bit 10,9,8 for rtt */ 1485 esdmode |= (rtt & 0x7) << 8; 1486 switch (i) { 1487 case 1: 1488 ddr->ddr_sdram_mode_3 = (0 1489 | ((esdmode & 0xFFFF) << 16) 1490 | ((sdmode & 0xFFFF) << 0) 1491 ); 1492 break; 1493 case 2: 1494 ddr->ddr_sdram_mode_5 = (0 1495 | ((esdmode & 0xFFFF) << 16) 1496 | ((sdmode & 0xFFFF) << 0) 1497 ); 1498 break; 1499 case 3: 1500 ddr->ddr_sdram_mode_7 = (0 1501 | ((esdmode & 0xFFFF) << 16) 1502 | ((sdmode & 0xFFFF) << 0) 1503 ); 1504 break; 1505 } 1506 } 1507 debug("FSLDDR: ddr_sdram_mode_3 = 0x%08x\n", 1508 ddr->ddr_sdram_mode_3); 1509 debug("FSLDDR: ddr_sdram_mode_5 = 0x%08x\n", 1510 ddr->ddr_sdram_mode_5); 1511 debug("FSLDDR: ddr_sdram_mode_5 = 0x%08x\n", 1512 ddr->ddr_sdram_mode_5); 1513 } 1514 } 1515 1516 #elif defined(CONFIG_SYS_FSL_DDR3) 1517 /* DDR SDRAM Mode configuration set (DDR_SDRAM_MODE) */ 1518 static void set_ddr_sdram_mode(const unsigned int ctrl_num, 1519 fsl_ddr_cfg_regs_t *ddr, 1520 const memctl_options_t *popts, 1521 const common_timing_params_t *common_dimm, 1522 unsigned int cas_latency, 1523 unsigned int additive_latency, 1524 const unsigned int unq_mrs_en) 1525 { 1526 int i; 1527 unsigned short esdmode; /* Extended SDRAM mode */ 1528 unsigned short sdmode; /* SDRAM mode */ 1529 1530 /* Mode Register - MR1 */ 1531 unsigned int qoff = 0; /* Output buffer enable 0=yes, 1=no */ 1532 unsigned int tdqs_en = 0; /* TDQS Enable: 0=no, 1=yes */ 1533 unsigned int rtt; 1534 unsigned int wrlvl_en = 0; /* Write level enable: 0=no, 1=yes */ 1535 unsigned int al = 0; /* Posted CAS# additive latency (AL) */ 1536 unsigned int dic = 0; /* Output driver impedance, 40ohm */ 1537 unsigned int dll_en = 0; /* DLL Enable 0=Enable (Normal), 1538 1=Disable (Test/Debug) */ 1539 1540 /* Mode Register - MR0 */ 1541 unsigned int dll_on; /* DLL control for precharge PD, 0=off, 1=on */ 1542 unsigned int wr = 0; /* Write Recovery */ 1543 unsigned int dll_rst; /* DLL Reset */ 1544 unsigned int mode; /* Normal=0 or Test=1 */ 1545 unsigned int caslat = 4;/* CAS# latency, default set as 6 cycles */ 1546 /* BT: Burst Type (0=Nibble Sequential, 1=Interleaved) */ 1547 unsigned int bt; 1548 unsigned int bl; /* BL: Burst Length */ 1549 1550 unsigned int wr_mclk; 1551 /* 1552 * DDR_SDRAM_MODE doesn't support 9,11,13,15 1553 * Please refer JEDEC Standard No. 79-3E for Mode Register MR0 1554 * for this table 1555 */ 1556 static const u8 wr_table[] = {1, 2, 3, 4, 5, 5, 6, 6, 7, 7, 0, 0}; 1557 1558 if (popts->rtt_override) 1559 rtt = popts->rtt_override_value; 1560 else 1561 rtt = popts->cs_local_opts[0].odt_rtt_norm; 1562 1563 if (additive_latency == (cas_latency - 1)) 1564 al = 1; 1565 if (additive_latency == (cas_latency - 2)) 1566 al = 2; 1567 1568 if (popts->quad_rank_present) 1569 dic = 1; /* output driver impedance 240/7 ohm */ 1570 1571 /* 1572 * The esdmode value will also be used for writing 1573 * MR1 during write leveling for DDR3, although the 1574 * bits specifically related to the write leveling 1575 * scheme will be handled automatically by the DDR 1576 * controller. so we set the wrlvl_en = 0 here. 1577 */ 1578 esdmode = (0 1579 | ((qoff & 0x1) << 12) 1580 | ((tdqs_en & 0x1) << 11) 1581 | ((rtt & 0x4) << 7) /* rtt field is split */ 1582 | ((wrlvl_en & 0x1) << 7) 1583 | ((rtt & 0x2) << 5) /* rtt field is split */ 1584 | ((dic & 0x2) << 4) /* DIC field is split */ 1585 | ((al & 0x3) << 3) 1586 | ((rtt & 0x1) << 2) /* rtt field is split */ 1587 | ((dic & 0x1) << 1) /* DIC field is split */ 1588 | ((dll_en & 0x1) << 0) 1589 ); 1590 1591 /* 1592 * DLL control for precharge PD 1593 * 0=slow exit DLL off (tXPDLL) 1594 * 1=fast exit DLL on (tXP) 1595 */ 1596 dll_on = 1; 1597 1598 wr_mclk = picos_to_mclk(ctrl_num, common_dimm->twr_ps); 1599 if (wr_mclk <= 16) { 1600 wr = wr_table[wr_mclk - 5]; 1601 } else { 1602 printf("Error: unsupported write recovery for mode register " 1603 "wr_mclk = %d\n", wr_mclk); 1604 } 1605 1606 dll_rst = 0; /* dll no reset */ 1607 mode = 0; /* normal mode */ 1608 1609 /* look up table to get the cas latency bits */ 1610 if (cas_latency >= 5 && cas_latency <= 16) { 1611 unsigned char cas_latency_table[] = { 1612 0x2, /* 5 clocks */ 1613 0x4, /* 6 clocks */ 1614 0x6, /* 7 clocks */ 1615 0x8, /* 8 clocks */ 1616 0xa, /* 9 clocks */ 1617 0xc, /* 10 clocks */ 1618 0xe, /* 11 clocks */ 1619 0x1, /* 12 clocks */ 1620 0x3, /* 13 clocks */ 1621 0x5, /* 14 clocks */ 1622 0x7, /* 15 clocks */ 1623 0x9, /* 16 clocks */ 1624 }; 1625 caslat = cas_latency_table[cas_latency - 5]; 1626 } else { 1627 printf("Error: unsupported cas latency for mode register\n"); 1628 } 1629 1630 bt = 0; /* Nibble sequential */ 1631 1632 switch (popts->burst_length) { 1633 case DDR_BL8: 1634 bl = 0; 1635 break; 1636 case DDR_OTF: 1637 bl = 1; 1638 break; 1639 case DDR_BC4: 1640 bl = 2; 1641 break; 1642 default: 1643 printf("Error: invalid burst length of %u specified. " 1644 " Defaulting to on-the-fly BC4 or BL8 beats.\n", 1645 popts->burst_length); 1646 bl = 1; 1647 break; 1648 } 1649 1650 sdmode = (0 1651 | ((dll_on & 0x1) << 12) 1652 | ((wr & 0x7) << 9) 1653 | ((dll_rst & 0x1) << 8) 1654 | ((mode & 0x1) << 7) 1655 | (((caslat >> 1) & 0x7) << 4) 1656 | ((bt & 0x1) << 3) 1657 | ((caslat & 1) << 2) 1658 | ((bl & 0x3) << 0) 1659 ); 1660 1661 ddr->ddr_sdram_mode = (0 1662 | ((esdmode & 0xFFFF) << 16) 1663 | ((sdmode & 0xFFFF) << 0) 1664 ); 1665 1666 debug("FSLDDR: ddr_sdram_mode = 0x%08x\n", ddr->ddr_sdram_mode); 1667 1668 if (unq_mrs_en) { /* unique mode registers are supported */ 1669 for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 1670 if (popts->rtt_override) 1671 rtt = popts->rtt_override_value; 1672 else 1673 rtt = popts->cs_local_opts[i].odt_rtt_norm; 1674 1675 esdmode &= 0xFDBB; /* clear bit 9,6,2 */ 1676 esdmode |= (0 1677 | ((rtt & 0x4) << 7) /* rtt field is split */ 1678 | ((rtt & 0x2) << 5) /* rtt field is split */ 1679 | ((rtt & 0x1) << 2) /* rtt field is split */ 1680 ); 1681 switch (i) { 1682 case 1: 1683 ddr->ddr_sdram_mode_3 = (0 1684 | ((esdmode & 0xFFFF) << 16) 1685 | ((sdmode & 0xFFFF) << 0) 1686 ); 1687 break; 1688 case 2: 1689 ddr->ddr_sdram_mode_5 = (0 1690 | ((esdmode & 0xFFFF) << 16) 1691 | ((sdmode & 0xFFFF) << 0) 1692 ); 1693 break; 1694 case 3: 1695 ddr->ddr_sdram_mode_7 = (0 1696 | ((esdmode & 0xFFFF) << 16) 1697 | ((sdmode & 0xFFFF) << 0) 1698 ); 1699 break; 1700 } 1701 } 1702 debug("FSLDDR: ddr_sdram_mode_3 = 0x%08x\n", 1703 ddr->ddr_sdram_mode_3); 1704 debug("FSLDDR: ddr_sdram_mode_5 = 0x%08x\n", 1705 ddr->ddr_sdram_mode_5); 1706 debug("FSLDDR: ddr_sdram_mode_5 = 0x%08x\n", 1707 ddr->ddr_sdram_mode_5); 1708 } 1709 } 1710 1711 #else /* !CONFIG_SYS_FSL_DDR3 */ 1712 1713 /* DDR SDRAM Mode configuration set (DDR_SDRAM_MODE) */ 1714 static void set_ddr_sdram_mode(const unsigned int ctrl_num, 1715 fsl_ddr_cfg_regs_t *ddr, 1716 const memctl_options_t *popts, 1717 const common_timing_params_t *common_dimm, 1718 unsigned int cas_latency, 1719 unsigned int additive_latency, 1720 const unsigned int unq_mrs_en) 1721 { 1722 unsigned short esdmode; /* Extended SDRAM mode */ 1723 unsigned short sdmode; /* SDRAM mode */ 1724 1725 /* 1726 * FIXME: This ought to be pre-calculated in a 1727 * technology-specific routine, 1728 * e.g. compute_DDR2_mode_register(), and then the 1729 * sdmode and esdmode passed in as part of common_dimm. 1730 */ 1731 1732 /* Extended Mode Register */ 1733 unsigned int mrs = 0; /* Mode Register Set */ 1734 unsigned int outputs = 0; /* 0=Enabled, 1=Disabled */ 1735 unsigned int rdqs_en = 0; /* RDQS Enable: 0=no, 1=yes */ 1736 unsigned int dqs_en = 0; /* DQS# Enable: 0=enable, 1=disable */ 1737 unsigned int ocd = 0; /* 0x0=OCD not supported, 1738 0x7=OCD default state */ 1739 unsigned int rtt; 1740 unsigned int al; /* Posted CAS# additive latency (AL) */ 1741 unsigned int ods = 0; /* Output Drive Strength: 1742 0 = Full strength (18ohm) 1743 1 = Reduced strength (4ohm) */ 1744 unsigned int dll_en = 0; /* DLL Enable 0=Enable (Normal), 1745 1=Disable (Test/Debug) */ 1746 1747 /* Mode Register (MR) */ 1748 unsigned int mr; /* Mode Register Definition */ 1749 unsigned int pd; /* Power-Down Mode */ 1750 unsigned int wr; /* Write Recovery */ 1751 unsigned int dll_res; /* DLL Reset */ 1752 unsigned int mode; /* Normal=0 or Test=1 */ 1753 unsigned int caslat = 0;/* CAS# latency */ 1754 /* BT: Burst Type (0=Sequential, 1=Interleaved) */ 1755 unsigned int bt; 1756 unsigned int bl; /* BL: Burst Length */ 1757 1758 dqs_en = !popts->dqs_config; 1759 rtt = fsl_ddr_get_rtt(); 1760 1761 al = additive_latency; 1762 1763 esdmode = (0 1764 | ((mrs & 0x3) << 14) 1765 | ((outputs & 0x1) << 12) 1766 | ((rdqs_en & 0x1) << 11) 1767 | ((dqs_en & 0x1) << 10) 1768 | ((ocd & 0x7) << 7) 1769 | ((rtt & 0x2) << 5) /* rtt field is split */ 1770 | ((al & 0x7) << 3) 1771 | ((rtt & 0x1) << 2) /* rtt field is split */ 1772 | ((ods & 0x1) << 1) 1773 | ((dll_en & 0x1) << 0) 1774 ); 1775 1776 mr = 0; /* FIXME: CHECKME */ 1777 1778 /* 1779 * 0 = Fast Exit (Normal) 1780 * 1 = Slow Exit (Low Power) 1781 */ 1782 pd = 0; 1783 1784 #if defined(CONFIG_SYS_FSL_DDR1) 1785 wr = 0; /* Historical */ 1786 #elif defined(CONFIG_SYS_FSL_DDR2) 1787 wr = picos_to_mclk(ctrl_num, common_dimm->twr_ps); 1788 #endif 1789 dll_res = 0; 1790 mode = 0; 1791 1792 #if defined(CONFIG_SYS_FSL_DDR1) 1793 if (1 <= cas_latency && cas_latency <= 4) { 1794 unsigned char mode_caslat_table[4] = { 1795 0x5, /* 1.5 clocks */ 1796 0x2, /* 2.0 clocks */ 1797 0x6, /* 2.5 clocks */ 1798 0x3 /* 3.0 clocks */ 1799 }; 1800 caslat = mode_caslat_table[cas_latency - 1]; 1801 } else { 1802 printf("Warning: unknown cas_latency %d\n", cas_latency); 1803 } 1804 #elif defined(CONFIG_SYS_FSL_DDR2) 1805 caslat = cas_latency; 1806 #endif 1807 bt = 0; 1808 1809 switch (popts->burst_length) { 1810 case DDR_BL4: 1811 bl = 2; 1812 break; 1813 case DDR_BL8: 1814 bl = 3; 1815 break; 1816 default: 1817 printf("Error: invalid burst length of %u specified. " 1818 " Defaulting to 4 beats.\n", 1819 popts->burst_length); 1820 bl = 2; 1821 break; 1822 } 1823 1824 sdmode = (0 1825 | ((mr & 0x3) << 14) 1826 | ((pd & 0x1) << 12) 1827 | ((wr & 0x7) << 9) 1828 | ((dll_res & 0x1) << 8) 1829 | ((mode & 0x1) << 7) 1830 | ((caslat & 0x7) << 4) 1831 | ((bt & 0x1) << 3) 1832 | ((bl & 0x7) << 0) 1833 ); 1834 1835 ddr->ddr_sdram_mode = (0 1836 | ((esdmode & 0xFFFF) << 16) 1837 | ((sdmode & 0xFFFF) << 0) 1838 ); 1839 debug("FSLDDR: ddr_sdram_mode = 0x%08x\n", ddr->ddr_sdram_mode); 1840 } 1841 #endif 1842 1843 /* DDR SDRAM Data Initialization (DDR_DATA_INIT) */ 1844 static void set_ddr_data_init(fsl_ddr_cfg_regs_t *ddr) 1845 { 1846 unsigned int init_value; /* Initialization value */ 1847 1848 #ifdef CONFIG_MEM_INIT_VALUE 1849 init_value = CONFIG_MEM_INIT_VALUE; 1850 #else 1851 init_value = 0xDEADBEEF; 1852 #endif 1853 ddr->ddr_data_init = init_value; 1854 } 1855 1856 /* 1857 * DDR SDRAM Clock Control (DDR_SDRAM_CLK_CNTL) 1858 * The old controller on the 8540/60 doesn't have this register. 1859 * Hope it's OK to set it (to 0) anyway. 1860 */ 1861 static void set_ddr_sdram_clk_cntl(fsl_ddr_cfg_regs_t *ddr, 1862 const memctl_options_t *popts) 1863 { 1864 unsigned int clk_adjust; /* Clock adjust */ 1865 unsigned int ss_en = 0; /* Source synchronous enable */ 1866 1867 #if defined(CONFIG_ARCH_MPC8541) || defined(CONFIG_ARCH_MPC8555) 1868 /* Per FSL Application Note: AN2805 */ 1869 ss_en = 1; 1870 #endif 1871 if (fsl_ddr_get_version(0) >= 0x40701) { 1872 /* clk_adjust in 5-bits on T-series and LS-series */ 1873 clk_adjust = (popts->clk_adjust & 0x1F) << 22; 1874 } else { 1875 /* clk_adjust in 4-bits on earlier MPC85xx and P-series */ 1876 clk_adjust = (popts->clk_adjust & 0xF) << 23; 1877 } 1878 1879 ddr->ddr_sdram_clk_cntl = (0 1880 | ((ss_en & 0x1) << 31) 1881 | clk_adjust 1882 ); 1883 debug("FSLDDR: clk_cntl = 0x%08x\n", ddr->ddr_sdram_clk_cntl); 1884 } 1885 1886 /* DDR Initialization Address (DDR_INIT_ADDR) */ 1887 static void set_ddr_init_addr(fsl_ddr_cfg_regs_t *ddr) 1888 { 1889 unsigned int init_addr = 0; /* Initialization address */ 1890 1891 ddr->ddr_init_addr = init_addr; 1892 } 1893 1894 /* DDR Initialization Address (DDR_INIT_EXT_ADDR) */ 1895 static void set_ddr_init_ext_addr(fsl_ddr_cfg_regs_t *ddr) 1896 { 1897 unsigned int uia = 0; /* Use initialization address */ 1898 unsigned int init_ext_addr = 0; /* Initialization address */ 1899 1900 ddr->ddr_init_ext_addr = (0 1901 | ((uia & 0x1) << 31) 1902 | (init_ext_addr & 0xF) 1903 ); 1904 } 1905 1906 /* DDR SDRAM Timing Configuration 4 (TIMING_CFG_4) */ 1907 static void set_timing_cfg_4(fsl_ddr_cfg_regs_t *ddr, 1908 const memctl_options_t *popts) 1909 { 1910 unsigned int rwt = 0; /* Read-to-write turnaround for same CS */ 1911 unsigned int wrt = 0; /* Write-to-read turnaround for same CS */ 1912 unsigned int rrt = 0; /* Read-to-read turnaround for same CS */ 1913 unsigned int wwt = 0; /* Write-to-write turnaround for same CS */ 1914 unsigned int trwt_mclk = 0; /* ext_rwt */ 1915 unsigned int dll_lock = 0; /* DDR SDRAM DLL Lock Time */ 1916 1917 #if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4) 1918 if (popts->burst_length == DDR_BL8) { 1919 /* We set BL/2 for fixed BL8 */ 1920 rrt = 0; /* BL/2 clocks */ 1921 wwt = 0; /* BL/2 clocks */ 1922 } else { 1923 /* We need to set BL/2 + 2 to BC4 and OTF */ 1924 rrt = 2; /* BL/2 + 2 clocks */ 1925 wwt = 2; /* BL/2 + 2 clocks */ 1926 } 1927 #endif 1928 #ifdef CONFIG_SYS_FSL_DDR4 1929 dll_lock = 2; /* tDLLK = 1024 clocks */ 1930 #elif defined(CONFIG_SYS_FSL_DDR3) 1931 dll_lock = 1; /* tDLLK = 512 clocks from spec */ 1932 #endif 1933 1934 if (popts->trwt_override) 1935 trwt_mclk = popts->trwt; 1936 1937 ddr->timing_cfg_4 = (0 1938 | ((rwt & 0xf) << 28) 1939 | ((wrt & 0xf) << 24) 1940 | ((rrt & 0xf) << 20) 1941 | ((wwt & 0xf) << 16) 1942 | ((trwt_mclk & 0xc) << 12) 1943 | (dll_lock & 0x3) 1944 ); 1945 debug("FSLDDR: timing_cfg_4 = 0x%08x\n", ddr->timing_cfg_4); 1946 } 1947 1948 /* DDR SDRAM Timing Configuration 5 (TIMING_CFG_5) */ 1949 static void set_timing_cfg_5(fsl_ddr_cfg_regs_t *ddr, unsigned int cas_latency) 1950 { 1951 unsigned int rodt_on = 0; /* Read to ODT on */ 1952 unsigned int rodt_off = 0; /* Read to ODT off */ 1953 unsigned int wodt_on = 0; /* Write to ODT on */ 1954 unsigned int wodt_off = 0; /* Write to ODT off */ 1955 1956 #if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4) 1957 unsigned int wr_lat = ((ddr->timing_cfg_2 & 0x00780000) >> 19) + 1958 ((ddr->timing_cfg_2 & 0x00040000) >> 14); 1959 /* rodt_on = timing_cfg_1[caslat] - timing_cfg_2[wrlat] + 1 */ 1960 if (cas_latency >= wr_lat) 1961 rodt_on = cas_latency - wr_lat + 1; 1962 rodt_off = 4; /* 4 clocks */ 1963 wodt_on = 1; /* 1 clocks */ 1964 wodt_off = 4; /* 4 clocks */ 1965 #endif 1966 1967 ddr->timing_cfg_5 = (0 1968 | ((rodt_on & 0x1f) << 24) 1969 | ((rodt_off & 0x7) << 20) 1970 | ((wodt_on & 0x1f) << 12) 1971 | ((wodt_off & 0x7) << 8) 1972 ); 1973 debug("FSLDDR: timing_cfg_5 = 0x%08x\n", ddr->timing_cfg_5); 1974 } 1975 1976 #ifdef CONFIG_SYS_FSL_DDR4 1977 static void set_timing_cfg_6(fsl_ddr_cfg_regs_t *ddr) 1978 { 1979 unsigned int hs_caslat = 0; 1980 unsigned int hs_wrlat = 0; 1981 unsigned int hs_wrrec = 0; 1982 unsigned int hs_clkadj = 0; 1983 unsigned int hs_wrlvl_start = 0; 1984 1985 ddr->timing_cfg_6 = (0 1986 | ((hs_caslat & 0x1f) << 24) 1987 | ((hs_wrlat & 0x1f) << 19) 1988 | ((hs_wrrec & 0x1f) << 12) 1989 | ((hs_clkadj & 0x1f) << 6) 1990 | ((hs_wrlvl_start & 0x1f) << 0) 1991 ); 1992 debug("FSLDDR: timing_cfg_6 = 0x%08x\n", ddr->timing_cfg_6); 1993 } 1994 1995 static void set_timing_cfg_7(const unsigned int ctrl_num, 1996 fsl_ddr_cfg_regs_t *ddr, 1997 const memctl_options_t *popts, 1998 const common_timing_params_t *common_dimm) 1999 { 2000 unsigned int txpr, tcksre, tcksrx; 2001 unsigned int cke_rst, cksre, cksrx, par_lat = 0, cs_to_cmd; 2002 const unsigned int mclk_ps = get_memory_clk_period_ps(ctrl_num); 2003 2004 txpr = max(5U, picos_to_mclk(ctrl_num, common_dimm->trfc1_ps + 10000)); 2005 tcksre = max(5U, picos_to_mclk(ctrl_num, 10000)); 2006 tcksrx = max(5U, picos_to_mclk(ctrl_num, 10000)); 2007 2008 if (ddr->ddr_sdram_cfg_2 & SDRAM_CFG2_AP_EN && 2009 CONFIG_FSL_SDRAM_TYPE == SDRAM_TYPE_DDR4) { 2010 /* for DDR4 only */ 2011 par_lat = (ddr->ddr_sdram_rcw_2 & 0xf) + 1; 2012 debug("PAR_LAT = %u for mclk_ps = %d\n", par_lat, mclk_ps); 2013 } 2014 2015 cs_to_cmd = 0; 2016 2017 if (txpr <= 200) 2018 cke_rst = 0; 2019 else if (txpr <= 256) 2020 cke_rst = 1; 2021 else if (txpr <= 512) 2022 cke_rst = 2; 2023 else 2024 cke_rst = 3; 2025 2026 if (tcksre <= 19) 2027 cksre = tcksre - 5; 2028 else 2029 cksre = 15; 2030 2031 if (tcksrx <= 19) 2032 cksrx = tcksrx - 5; 2033 else 2034 cksrx = 15; 2035 2036 ddr->timing_cfg_7 = (0 2037 | ((cke_rst & 0x3) << 28) 2038 | ((cksre & 0xf) << 24) 2039 | ((cksrx & 0xf) << 20) 2040 | ((par_lat & 0xf) << 16) 2041 | ((cs_to_cmd & 0xf) << 4) 2042 ); 2043 debug("FSLDDR: timing_cfg_7 = 0x%08x\n", ddr->timing_cfg_7); 2044 } 2045 2046 static void set_timing_cfg_8(const unsigned int ctrl_num, 2047 fsl_ddr_cfg_regs_t *ddr, 2048 const memctl_options_t *popts, 2049 const common_timing_params_t *common_dimm, 2050 unsigned int cas_latency) 2051 { 2052 int rwt_bg, wrt_bg, rrt_bg, wwt_bg; 2053 unsigned int acttoact_bg, wrtord_bg, pre_all_rec; 2054 int tccdl = picos_to_mclk(ctrl_num, common_dimm->tccdl_ps); 2055 int wr_lat = ((ddr->timing_cfg_2 & 0x00780000) >> 19) + 2056 ((ddr->timing_cfg_2 & 0x00040000) >> 14); 2057 2058 rwt_bg = cas_latency + 2 + 4 - wr_lat; 2059 if (rwt_bg < tccdl) 2060 rwt_bg = tccdl - rwt_bg; 2061 else 2062 rwt_bg = 0; 2063 2064 wrt_bg = wr_lat + 4 + 1 - cas_latency; 2065 if (wrt_bg < tccdl) 2066 wrt_bg = tccdl - wrt_bg; 2067 else 2068 wrt_bg = 0; 2069 2070 if (popts->burst_length == DDR_BL8) { 2071 rrt_bg = tccdl - 4; 2072 wwt_bg = tccdl - 4; 2073 } else { 2074 rrt_bg = tccdl - 2; 2075 wwt_bg = tccdl - 2; 2076 } 2077 2078 acttoact_bg = picos_to_mclk(ctrl_num, common_dimm->trrdl_ps); 2079 wrtord_bg = max(4U, picos_to_mclk(ctrl_num, 7500)); 2080 if (popts->otf_burst_chop_en) 2081 wrtord_bg += 2; 2082 2083 pre_all_rec = 0; 2084 2085 ddr->timing_cfg_8 = (0 2086 | ((rwt_bg & 0xf) << 28) 2087 | ((wrt_bg & 0xf) << 24) 2088 | ((rrt_bg & 0xf) << 20) 2089 | ((wwt_bg & 0xf) << 16) 2090 | ((acttoact_bg & 0xf) << 12) 2091 | ((wrtord_bg & 0xf) << 8) 2092 | ((pre_all_rec & 0x1f) << 0) 2093 ); 2094 2095 debug("FSLDDR: timing_cfg_8 = 0x%08x\n", ddr->timing_cfg_8); 2096 } 2097 2098 static void set_timing_cfg_9(const unsigned int ctrl_num, 2099 fsl_ddr_cfg_regs_t *ddr, 2100 const memctl_options_t *popts, 2101 const common_timing_params_t *common_dimm) 2102 { 2103 unsigned int refrec_cid_mclk = 0; 2104 unsigned int acttoact_cid_mclk = 0; 2105 2106 if (popts->package_3ds) { 2107 refrec_cid_mclk = 2108 picos_to_mclk(ctrl_num, common_dimm->trfc_slr_ps); 2109 acttoact_cid_mclk = 4U; /* tRRDS_slr */ 2110 } 2111 2112 ddr->timing_cfg_9 = (refrec_cid_mclk & 0x3ff) << 16 | 2113 (acttoact_cid_mclk & 0xf) << 8; 2114 2115 debug("FSLDDR: timing_cfg_9 = 0x%08x\n", ddr->timing_cfg_9); 2116 } 2117 2118 /* This function needs to be called after set_ddr_sdram_cfg() is called */ 2119 static void set_ddr_dq_mapping(fsl_ddr_cfg_regs_t *ddr, 2120 const dimm_params_t *dimm_params) 2121 { 2122 unsigned int acc_ecc_en = (ddr->ddr_sdram_cfg >> 2) & 0x1; 2123 int i; 2124 2125 for (i = 0; i < CONFIG_DIMM_SLOTS_PER_CTLR; i++) { 2126 if (dimm_params[i].n_ranks) 2127 break; 2128 } 2129 if (i >= CONFIG_DIMM_SLOTS_PER_CTLR) { 2130 puts("DDR error: no DIMM found!\n"); 2131 return; 2132 } 2133 2134 ddr->dq_map_0 = ((dimm_params[i].dq_mapping[0] & 0x3F) << 26) | 2135 ((dimm_params[i].dq_mapping[1] & 0x3F) << 20) | 2136 ((dimm_params[i].dq_mapping[2] & 0x3F) << 14) | 2137 ((dimm_params[i].dq_mapping[3] & 0x3F) << 8) | 2138 ((dimm_params[i].dq_mapping[4] & 0x3F) << 2); 2139 2140 ddr->dq_map_1 = ((dimm_params[i].dq_mapping[5] & 0x3F) << 26) | 2141 ((dimm_params[i].dq_mapping[6] & 0x3F) << 20) | 2142 ((dimm_params[i].dq_mapping[7] & 0x3F) << 14) | 2143 ((dimm_params[i].dq_mapping[10] & 0x3F) << 8) | 2144 ((dimm_params[i].dq_mapping[11] & 0x3F) << 2); 2145 2146 ddr->dq_map_2 = ((dimm_params[i].dq_mapping[12] & 0x3F) << 26) | 2147 ((dimm_params[i].dq_mapping[13] & 0x3F) << 20) | 2148 ((dimm_params[i].dq_mapping[14] & 0x3F) << 14) | 2149 ((dimm_params[i].dq_mapping[15] & 0x3F) << 8) | 2150 ((dimm_params[i].dq_mapping[16] & 0x3F) << 2); 2151 2152 /* dq_map for ECC[4:7] is set to 0 if accumulated ECC is enabled */ 2153 ddr->dq_map_3 = ((dimm_params[i].dq_mapping[17] & 0x3F) << 26) | 2154 ((dimm_params[i].dq_mapping[8] & 0x3F) << 20) | 2155 (acc_ecc_en ? 0 : 2156 (dimm_params[i].dq_mapping[9] & 0x3F) << 14) | 2157 dimm_params[i].dq_mapping_ors; 2158 2159 debug("FSLDDR: dq_map_0 = 0x%08x\n", ddr->dq_map_0); 2160 debug("FSLDDR: dq_map_1 = 0x%08x\n", ddr->dq_map_1); 2161 debug("FSLDDR: dq_map_2 = 0x%08x\n", ddr->dq_map_2); 2162 debug("FSLDDR: dq_map_3 = 0x%08x\n", ddr->dq_map_3); 2163 } 2164 static void set_ddr_sdram_cfg_3(fsl_ddr_cfg_regs_t *ddr, 2165 const memctl_options_t *popts) 2166 { 2167 int rd_pre; 2168 2169 rd_pre = popts->quad_rank_present ? 1 : 0; 2170 2171 ddr->ddr_sdram_cfg_3 = (rd_pre & 0x1) << 16; 2172 /* Disable MRS on parity error for RDIMMs */ 2173 ddr->ddr_sdram_cfg_3 |= popts->registered_dimm_en ? 1 : 0; 2174 2175 if (popts->package_3ds) { /* only 2,4,8 are supported */ 2176 if ((popts->package_3ds + 1) & 0x1) { 2177 printf("Error: Unsupported 3DS DIMM with %d die\n", 2178 popts->package_3ds + 1); 2179 } else { 2180 ddr->ddr_sdram_cfg_3 |= ((popts->package_3ds + 1) >> 1) 2181 << 4; 2182 } 2183 } 2184 2185 debug("FSLDDR: ddr_sdram_cfg_3 = 0x%08x\n", ddr->ddr_sdram_cfg_3); 2186 } 2187 #endif /* CONFIG_SYS_FSL_DDR4 */ 2188 2189 /* DDR ZQ Calibration Control (DDR_ZQ_CNTL) */ 2190 static void set_ddr_zq_cntl(fsl_ddr_cfg_regs_t *ddr, unsigned int zq_en) 2191 { 2192 unsigned int zqinit = 0;/* POR ZQ Calibration Time (tZQinit) */ 2193 /* Normal Operation Full Calibration Time (tZQoper) */ 2194 unsigned int zqoper = 0; 2195 /* Normal Operation Short Calibration Time (tZQCS) */ 2196 unsigned int zqcs = 0; 2197 #ifdef CONFIG_SYS_FSL_DDR4 2198 unsigned int zqcs_init; 2199 #endif 2200 2201 if (zq_en) { 2202 #ifdef CONFIG_SYS_FSL_DDR4 2203 zqinit = 10; /* 1024 clocks */ 2204 zqoper = 9; /* 512 clocks */ 2205 zqcs = 7; /* 128 clocks */ 2206 zqcs_init = 5; /* 1024 refresh sequences */ 2207 #else 2208 zqinit = 9; /* 512 clocks */ 2209 zqoper = 8; /* 256 clocks */ 2210 zqcs = 6; /* 64 clocks */ 2211 #endif 2212 } 2213 2214 ddr->ddr_zq_cntl = (0 2215 | ((zq_en & 0x1) << 31) 2216 | ((zqinit & 0xF) << 24) 2217 | ((zqoper & 0xF) << 16) 2218 | ((zqcs & 0xF) << 8) 2219 #ifdef CONFIG_SYS_FSL_DDR4 2220 | ((zqcs_init & 0xF) << 0) 2221 #endif 2222 ); 2223 debug("FSLDDR: zq_cntl = 0x%08x\n", ddr->ddr_zq_cntl); 2224 } 2225 2226 /* DDR Write Leveling Control (DDR_WRLVL_CNTL) */ 2227 static void set_ddr_wrlvl_cntl(fsl_ddr_cfg_regs_t *ddr, unsigned int wrlvl_en, 2228 const memctl_options_t *popts) 2229 { 2230 /* 2231 * First DQS pulse rising edge after margining mode 2232 * is programmed (tWL_MRD) 2233 */ 2234 unsigned int wrlvl_mrd = 0; 2235 /* ODT delay after margining mode is programmed (tWL_ODTEN) */ 2236 unsigned int wrlvl_odten = 0; 2237 /* DQS/DQS_ delay after margining mode is programmed (tWL_DQSEN) */ 2238 unsigned int wrlvl_dqsen = 0; 2239 /* WRLVL_SMPL: Write leveling sample time */ 2240 unsigned int wrlvl_smpl = 0; 2241 /* WRLVL_WLR: Write leveling repeition time */ 2242 unsigned int wrlvl_wlr = 0; 2243 /* WRLVL_START: Write leveling start time */ 2244 unsigned int wrlvl_start = 0; 2245 2246 /* suggest enable write leveling for DDR3 due to fly-by topology */ 2247 if (wrlvl_en) { 2248 /* tWL_MRD min = 40 nCK, we set it 64 */ 2249 wrlvl_mrd = 0x6; 2250 /* tWL_ODTEN 128 */ 2251 wrlvl_odten = 0x7; 2252 /* tWL_DQSEN min = 25 nCK, we set it 32 */ 2253 wrlvl_dqsen = 0x5; 2254 /* 2255 * Write leveling sample time at least need 6 clocks 2256 * higher than tWLO to allow enough time for progagation 2257 * delay and sampling the prime data bits. 2258 */ 2259 wrlvl_smpl = 0xf; 2260 /* 2261 * Write leveling repetition time 2262 * at least tWLO + 6 clocks clocks 2263 * we set it 64 2264 */ 2265 wrlvl_wlr = 0x6; 2266 /* 2267 * Write leveling start time 2268 * The value use for the DQS_ADJUST for the first sample 2269 * when write leveling is enabled. It probably needs to be 2270 * overridden per platform. 2271 */ 2272 wrlvl_start = 0x8; 2273 /* 2274 * Override the write leveling sample and start time 2275 * according to specific board 2276 */ 2277 if (popts->wrlvl_override) { 2278 wrlvl_smpl = popts->wrlvl_sample; 2279 wrlvl_start = popts->wrlvl_start; 2280 } 2281 } 2282 2283 ddr->ddr_wrlvl_cntl = (0 2284 | ((wrlvl_en & 0x1) << 31) 2285 | ((wrlvl_mrd & 0x7) << 24) 2286 | ((wrlvl_odten & 0x7) << 20) 2287 | ((wrlvl_dqsen & 0x7) << 16) 2288 | ((wrlvl_smpl & 0xf) << 12) 2289 | ((wrlvl_wlr & 0x7) << 8) 2290 | ((wrlvl_start & 0x1F) << 0) 2291 ); 2292 debug("FSLDDR: wrlvl_cntl = 0x%08x\n", ddr->ddr_wrlvl_cntl); 2293 ddr->ddr_wrlvl_cntl_2 = popts->wrlvl_ctl_2; 2294 debug("FSLDDR: wrlvl_cntl_2 = 0x%08x\n", ddr->ddr_wrlvl_cntl_2); 2295 ddr->ddr_wrlvl_cntl_3 = popts->wrlvl_ctl_3; 2296 debug("FSLDDR: wrlvl_cntl_3 = 0x%08x\n", ddr->ddr_wrlvl_cntl_3); 2297 2298 } 2299 2300 /* DDR Self Refresh Counter (DDR_SR_CNTR) */ 2301 static void set_ddr_sr_cntr(fsl_ddr_cfg_regs_t *ddr, unsigned int sr_it) 2302 { 2303 /* Self Refresh Idle Threshold */ 2304 ddr->ddr_sr_cntr = (sr_it & 0xF) << 16; 2305 } 2306 2307 static void set_ddr_eor(fsl_ddr_cfg_regs_t *ddr, const memctl_options_t *popts) 2308 { 2309 if (popts->addr_hash) { 2310 ddr->ddr_eor = 0x40000000; /* address hash enable */ 2311 puts("Address hashing enabled.\n"); 2312 } 2313 } 2314 2315 static void set_ddr_cdr1(fsl_ddr_cfg_regs_t *ddr, const memctl_options_t *popts) 2316 { 2317 ddr->ddr_cdr1 = popts->ddr_cdr1; 2318 debug("FSLDDR: ddr_cdr1 = 0x%08x\n", ddr->ddr_cdr1); 2319 } 2320 2321 static void set_ddr_cdr2(fsl_ddr_cfg_regs_t *ddr, const memctl_options_t *popts) 2322 { 2323 ddr->ddr_cdr2 = popts->ddr_cdr2; 2324 debug("FSLDDR: ddr_cdr2 = 0x%08x\n", ddr->ddr_cdr2); 2325 } 2326 2327 unsigned int 2328 check_fsl_memctl_config_regs(const fsl_ddr_cfg_regs_t *ddr) 2329 { 2330 unsigned int res = 0; 2331 2332 /* 2333 * Check that DDR_SDRAM_CFG[RD_EN] and DDR_SDRAM_CFG[2T_EN] are 2334 * not set at the same time. 2335 */ 2336 if (ddr->ddr_sdram_cfg & 0x10000000 2337 && ddr->ddr_sdram_cfg & 0x00008000) { 2338 printf("Error: DDR_SDRAM_CFG[RD_EN] and DDR_SDRAM_CFG[2T_EN] " 2339 " should not be set at the same time.\n"); 2340 res++; 2341 } 2342 2343 return res; 2344 } 2345 2346 unsigned int 2347 compute_fsl_memctl_config_regs(const unsigned int ctrl_num, 2348 const memctl_options_t *popts, 2349 fsl_ddr_cfg_regs_t *ddr, 2350 const common_timing_params_t *common_dimm, 2351 const dimm_params_t *dimm_params, 2352 unsigned int dbw_cap_adj, 2353 unsigned int size_only) 2354 { 2355 unsigned int i; 2356 unsigned int cas_latency; 2357 unsigned int additive_latency; 2358 unsigned int sr_it; 2359 unsigned int zq_en; 2360 unsigned int wrlvl_en; 2361 unsigned int ip_rev = 0; 2362 unsigned int unq_mrs_en = 0; 2363 int cs_en = 1; 2364 #ifdef CONFIG_SYS_FSL_ERRATUM_A009942 2365 unsigned int ddr_freq; 2366 #endif 2367 #if (defined(CONFIG_SYS_FSL_ERRATUM_A008378) && \ 2368 defined(CONFIG_SYS_FSL_DDRC_GEN4)) || \ 2369 defined(CONFIG_SYS_FSL_ERRATUM_A009942) 2370 struct ccsr_ddr __iomem *ddrc; 2371 2372 switch (ctrl_num) { 2373 case 0: 2374 ddrc = (void *)CONFIG_SYS_FSL_DDR_ADDR; 2375 break; 2376 #if defined(CONFIG_SYS_FSL_DDR2_ADDR) && (CONFIG_SYS_NUM_DDR_CTLRS > 1) 2377 case 1: 2378 ddrc = (void *)CONFIG_SYS_FSL_DDR2_ADDR; 2379 break; 2380 #endif 2381 #if defined(CONFIG_SYS_FSL_DDR3_ADDR) && (CONFIG_SYS_NUM_DDR_CTLRS > 2) 2382 case 2: 2383 ddrc = (void *)CONFIG_SYS_FSL_DDR3_ADDR; 2384 break; 2385 #endif 2386 #if defined(CONFIG_SYS_FSL_DDR4_ADDR) && (CONFIG_SYS_NUM_DDR_CTLRS > 3) 2387 case 3: 2388 ddrc = (void *)CONFIG_SYS_FSL_DDR4_ADDR; 2389 break; 2390 #endif 2391 default: 2392 printf("%s unexpected ctrl_num = %u\n", __func__, ctrl_num); 2393 return 1; 2394 } 2395 #endif 2396 2397 memset(ddr, 0, sizeof(fsl_ddr_cfg_regs_t)); 2398 2399 if (common_dimm == NULL) { 2400 printf("Error: subset DIMM params struct null pointer\n"); 2401 return 1; 2402 } 2403 2404 /* 2405 * Process overrides first. 2406 * 2407 * FIXME: somehow add dereated caslat to this 2408 */ 2409 cas_latency = (popts->cas_latency_override) 2410 ? popts->cas_latency_override_value 2411 : common_dimm->lowest_common_spd_caslat; 2412 2413 additive_latency = (popts->additive_latency_override) 2414 ? popts->additive_latency_override_value 2415 : common_dimm->additive_latency; 2416 2417 sr_it = (popts->auto_self_refresh_en) 2418 ? popts->sr_it 2419 : 0; 2420 /* ZQ calibration */ 2421 zq_en = (popts->zq_en) ? 1 : 0; 2422 /* write leveling */ 2423 wrlvl_en = (popts->wrlvl_en) ? 1 : 0; 2424 2425 /* Chip Select Memory Bounds (CSn_BNDS) */ 2426 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 2427 unsigned long long ea, sa; 2428 unsigned int cs_per_dimm 2429 = CONFIG_CHIP_SELECTS_PER_CTRL / CONFIG_DIMM_SLOTS_PER_CTLR; 2430 unsigned int dimm_number 2431 = i / cs_per_dimm; 2432 unsigned long long rank_density 2433 = dimm_params[dimm_number].rank_density >> dbw_cap_adj; 2434 2435 if (dimm_params[dimm_number].n_ranks == 0) { 2436 debug("Skipping setup of CS%u " 2437 "because n_ranks on DIMM %u is 0\n", i, dimm_number); 2438 continue; 2439 } 2440 if (popts->memctl_interleaving) { 2441 switch (popts->ba_intlv_ctl & FSL_DDR_CS0_CS1_CS2_CS3) { 2442 case FSL_DDR_CS0_CS1_CS2_CS3: 2443 break; 2444 case FSL_DDR_CS0_CS1: 2445 case FSL_DDR_CS0_CS1_AND_CS2_CS3: 2446 if (i > 1) 2447 cs_en = 0; 2448 break; 2449 case FSL_DDR_CS2_CS3: 2450 default: 2451 if (i > 0) 2452 cs_en = 0; 2453 break; 2454 } 2455 sa = common_dimm->base_address; 2456 ea = sa + common_dimm->total_mem - 1; 2457 } else if (!popts->memctl_interleaving) { 2458 /* 2459 * If memory interleaving between controllers is NOT 2460 * enabled, the starting address for each memory 2461 * controller is distinct. However, because rank 2462 * interleaving is enabled, the starting and ending 2463 * addresses of the total memory on that memory 2464 * controller needs to be programmed into its 2465 * respective CS0_BNDS. 2466 */ 2467 switch (popts->ba_intlv_ctl & FSL_DDR_CS0_CS1_CS2_CS3) { 2468 case FSL_DDR_CS0_CS1_CS2_CS3: 2469 sa = common_dimm->base_address; 2470 ea = sa + common_dimm->total_mem - 1; 2471 break; 2472 case FSL_DDR_CS0_CS1_AND_CS2_CS3: 2473 if ((i >= 2) && (dimm_number == 0)) { 2474 sa = dimm_params[dimm_number].base_address + 2475 2 * rank_density; 2476 ea = sa + 2 * rank_density - 1; 2477 } else { 2478 sa = dimm_params[dimm_number].base_address; 2479 ea = sa + 2 * rank_density - 1; 2480 } 2481 break; 2482 case FSL_DDR_CS0_CS1: 2483 if (dimm_params[dimm_number].n_ranks > (i % cs_per_dimm)) { 2484 sa = dimm_params[dimm_number].base_address; 2485 ea = sa + rank_density - 1; 2486 if (i != 1) 2487 sa += (i % cs_per_dimm) * rank_density; 2488 ea += (i % cs_per_dimm) * rank_density; 2489 } else { 2490 sa = 0; 2491 ea = 0; 2492 } 2493 if (i == 0) 2494 ea += rank_density; 2495 break; 2496 case FSL_DDR_CS2_CS3: 2497 if (dimm_params[dimm_number].n_ranks > (i % cs_per_dimm)) { 2498 sa = dimm_params[dimm_number].base_address; 2499 ea = sa + rank_density - 1; 2500 if (i != 3) 2501 sa += (i % cs_per_dimm) * rank_density; 2502 ea += (i % cs_per_dimm) * rank_density; 2503 } else { 2504 sa = 0; 2505 ea = 0; 2506 } 2507 if (i == 2) 2508 ea += (rank_density >> dbw_cap_adj); 2509 break; 2510 default: /* No bank(chip-select) interleaving */ 2511 sa = dimm_params[dimm_number].base_address; 2512 ea = sa + rank_density - 1; 2513 if (dimm_params[dimm_number].n_ranks > (i % cs_per_dimm)) { 2514 sa += (i % cs_per_dimm) * rank_density; 2515 ea += (i % cs_per_dimm) * rank_density; 2516 } else { 2517 sa = 0; 2518 ea = 0; 2519 } 2520 break; 2521 } 2522 } 2523 2524 sa >>= 24; 2525 ea >>= 24; 2526 2527 if (cs_en) { 2528 ddr->cs[i].bnds = (0 2529 | ((sa & 0xffff) << 16) /* starting address */ 2530 | ((ea & 0xffff) << 0) /* ending address */ 2531 ); 2532 } else { 2533 /* setting bnds to 0xffffffff for inactive CS */ 2534 ddr->cs[i].bnds = 0xffffffff; 2535 } 2536 2537 debug("FSLDDR: cs[%d]_bnds = 0x%08x\n", i, ddr->cs[i].bnds); 2538 set_csn_config(dimm_number, i, ddr, popts, dimm_params); 2539 set_csn_config_2(i, ddr); 2540 } 2541 2542 /* 2543 * In the case we only need to compute the ddr sdram size, we only need 2544 * to set csn registers, so return from here. 2545 */ 2546 if (size_only) 2547 return 0; 2548 2549 set_ddr_eor(ddr, popts); 2550 2551 #if !defined(CONFIG_SYS_FSL_DDR1) 2552 set_timing_cfg_0(ctrl_num, ddr, popts, dimm_params); 2553 #endif 2554 2555 set_timing_cfg_3(ctrl_num, ddr, popts, common_dimm, cas_latency, 2556 additive_latency); 2557 set_timing_cfg_1(ctrl_num, ddr, popts, common_dimm, cas_latency); 2558 set_timing_cfg_2(ctrl_num, ddr, popts, common_dimm, 2559 cas_latency, additive_latency); 2560 2561 set_ddr_cdr1(ddr, popts); 2562 set_ddr_cdr2(ddr, popts); 2563 set_ddr_sdram_cfg(ddr, popts, common_dimm); 2564 ip_rev = fsl_ddr_get_version(ctrl_num); 2565 if (ip_rev > 0x40400) 2566 unq_mrs_en = 1; 2567 2568 if ((ip_rev > 0x40700) && (popts->cswl_override != 0)) 2569 ddr->debug[18] = popts->cswl_override; 2570 2571 set_ddr_sdram_cfg_2(ctrl_num, ddr, popts, unq_mrs_en); 2572 set_ddr_sdram_mode(ctrl_num, ddr, popts, common_dimm, 2573 cas_latency, additive_latency, unq_mrs_en); 2574 set_ddr_sdram_mode_2(ctrl_num, ddr, popts, common_dimm, unq_mrs_en); 2575 #ifdef CONFIG_SYS_FSL_DDR4 2576 set_ddr_sdram_mode_9(ddr, popts, common_dimm, unq_mrs_en); 2577 set_ddr_sdram_mode_10(ctrl_num, ddr, popts, common_dimm, unq_mrs_en); 2578 #endif 2579 set_ddr_sdram_rcw(ctrl_num, ddr, popts, common_dimm); 2580 2581 set_ddr_sdram_interval(ctrl_num, ddr, popts, common_dimm); 2582 set_ddr_data_init(ddr); 2583 set_ddr_sdram_clk_cntl(ddr, popts); 2584 set_ddr_init_addr(ddr); 2585 set_ddr_init_ext_addr(ddr); 2586 set_timing_cfg_4(ddr, popts); 2587 set_timing_cfg_5(ddr, cas_latency); 2588 #ifdef CONFIG_SYS_FSL_DDR4 2589 set_ddr_sdram_cfg_3(ddr, popts); 2590 set_timing_cfg_6(ddr); 2591 set_timing_cfg_7(ctrl_num, ddr, popts, common_dimm); 2592 set_timing_cfg_8(ctrl_num, ddr, popts, common_dimm, cas_latency); 2593 set_timing_cfg_9(ctrl_num, ddr, popts, common_dimm); 2594 set_ddr_dq_mapping(ddr, dimm_params); 2595 #endif 2596 2597 set_ddr_zq_cntl(ddr, zq_en); 2598 set_ddr_wrlvl_cntl(ddr, wrlvl_en, popts); 2599 2600 set_ddr_sr_cntr(ddr, sr_it); 2601 2602 #ifdef CONFIG_SYS_FSL_DDR_EMU 2603 /* disble DDR training for emulator */ 2604 ddr->debug[2] = 0x00000400; 2605 ddr->debug[4] = 0xff800800; 2606 ddr->debug[5] = 0x08000800; 2607 ddr->debug[6] = 0x08000800; 2608 ddr->debug[7] = 0x08000800; 2609 ddr->debug[8] = 0x08000800; 2610 #endif 2611 #ifdef CONFIG_SYS_FSL_ERRATUM_A004508 2612 if ((ip_rev >= 0x40000) && (ip_rev < 0x40400)) 2613 ddr->debug[2] |= 0x00000200; /* set bit 22 */ 2614 #endif 2615 2616 #if defined(CONFIG_SYS_FSL_ERRATUM_A008378) && defined(CONFIG_SYS_FSL_DDRC_GEN4) 2617 /* Erratum applies when accumulated ECC is used, or DBI is enabled */ 2618 #define IS_ACC_ECC_EN(v) ((v) & 0x4) 2619 #define IS_DBI(v) ((((v) >> 12) & 0x3) == 0x2) 2620 if (has_erratum_a008378()) { 2621 if (IS_ACC_ECC_EN(ddr->ddr_sdram_cfg) || 2622 IS_DBI(ddr->ddr_sdram_cfg_3)) { 2623 ddr->debug[28] = ddr_in32(&ddrc->debug[28]); 2624 ddr->debug[28] |= (0x9 << 20); 2625 } 2626 } 2627 #endif 2628 2629 #ifdef CONFIG_SYS_FSL_ERRATUM_A009942 2630 ddr_freq = get_ddr_freq(ctrl_num) / 1000000; 2631 ddr->debug[28] |= ddr_in32(&ddrc->debug[28]); 2632 ddr->debug[28] &= 0xff0fff00; 2633 if (ddr_freq <= 1333) 2634 ddr->debug[28] |= 0x0080006a; 2635 else if (ddr_freq <= 1600) 2636 ddr->debug[28] |= 0x0070006f; 2637 else if (ddr_freq <= 1867) 2638 ddr->debug[28] |= 0x00700076; 2639 else if (ddr_freq <= 2133) 2640 ddr->debug[28] |= 0x0060007b; 2641 if (popts->cpo_sample) 2642 ddr->debug[28] = (ddr->debug[28] & 0xffffff00) | 2643 popts->cpo_sample; 2644 #endif 2645 2646 return check_fsl_memctl_config_regs(ddr); 2647 } 2648 2649 #ifdef CONFIG_SYS_FSL_ERRATUM_A009942 2650 /* 2651 * This additional workaround of A009942 checks the condition to determine if 2652 * the CPO value set by the existing A009942 workaround needs to be updated. 2653 * If need, print a warning to prompt user reconfigure DDR debug_29[24:31] with 2654 * expected optimal value, the optimal value is highly board dependent. 2655 */ 2656 void erratum_a009942_check_cpo(void) 2657 { 2658 struct ccsr_ddr __iomem *ddr = 2659 (struct ccsr_ddr __iomem *)(CONFIG_SYS_FSL_DDR_ADDR); 2660 u32 cpo, cpo_e, cpo_o, cpo_target, cpo_optimal; 2661 u32 cpo_min = ddr_in32(&ddr->debug[9]) >> 24; 2662 u32 cpo_max = cpo_min; 2663 u32 sdram_cfg, i, tmp, lanes, ddr_type; 2664 bool update_cpo = false, has_ecc = false; 2665 2666 sdram_cfg = ddr_in32(&ddr->sdram_cfg); 2667 if (sdram_cfg & SDRAM_CFG_32_BE) 2668 lanes = 4; 2669 else if (sdram_cfg & SDRAM_CFG_16_BE) 2670 lanes = 2; 2671 else 2672 lanes = 8; 2673 2674 if (sdram_cfg & SDRAM_CFG_ECC_EN) 2675 has_ecc = true; 2676 2677 /* determine the maximum and minimum CPO values */ 2678 for (i = 9; i < 9 + lanes / 2; i++) { 2679 cpo = ddr_in32(&ddr->debug[i]); 2680 cpo_e = cpo >> 24; 2681 cpo_o = (cpo >> 8) & 0xff; 2682 tmp = min(cpo_e, cpo_o); 2683 if (tmp < cpo_min) 2684 cpo_min = tmp; 2685 tmp = max(cpo_e, cpo_o); 2686 if (tmp > cpo_max) 2687 cpo_max = tmp; 2688 } 2689 2690 if (has_ecc) { 2691 cpo = ddr_in32(&ddr->debug[13]); 2692 cpo = cpo >> 24; 2693 if (cpo < cpo_min) 2694 cpo_min = cpo; 2695 if (cpo > cpo_max) 2696 cpo_max = cpo; 2697 } 2698 2699 cpo_target = ddr_in32(&ddr->debug[28]) & 0xff; 2700 cpo_optimal = ((cpo_max + cpo_min) >> 1) + 0x27; 2701 debug("cpo_optimal = 0x%x, cpo_target = 0x%x\n", cpo_optimal, 2702 cpo_target); 2703 debug("cpo_max = 0x%x, cpo_min = 0x%x\n", cpo_max, cpo_min); 2704 2705 ddr_type = (sdram_cfg & SDRAM_CFG_SDRAM_TYPE_MASK) >> 2706 SDRAM_CFG_SDRAM_TYPE_SHIFT; 2707 if (ddr_type == SDRAM_TYPE_DDR4) 2708 update_cpo = (cpo_min + 0x3b) < cpo_target ? true : false; 2709 else if (ddr_type == SDRAM_TYPE_DDR3) 2710 update_cpo = (cpo_min + 0x3f) < cpo_target ? true : false; 2711 2712 if (update_cpo) { 2713 printf("WARN: pls set popts->cpo_sample = 0x%x ", cpo_optimal); 2714 printf("in <board>/ddr.c to optimize cpo\n"); 2715 } 2716 } 2717 #endif 2718
