2 * Copyright 2008-2014 Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0+
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]
14 #include <fsl_ddr_sdram.h>
17 #include <fsl_immap.h>
21 * Determine Rtt value.
23 * This should likely be either board or controller specific.
25 * Rtt(nominal) - DDR2:
30 * Rtt(nominal) - DDR3:
38 * FIXME: Apparently 8641 needs a value of 2
39 * FIXME: Old code seys if 667 MHz or higher, use 3 on 8572
41 * FIXME: There was some effort down this line earlier:
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)) {
53 static inline int fsl_ddr_get_rtt(void)
57 #if defined(CONFIG_SYS_FSL_DDR1)
59 #elif defined(CONFIG_SYS_FSL_DDR2)
68 #ifdef CONFIG_SYS_FSL_DDR4
70 * compute CAS write latency according to DDR4 spec
71 * CWL = 9 for <= 1600MT/s
79 static inline unsigned int compute_cas_write_latency(
80 const unsigned int ctrl_num)
83 const unsigned int mclk_ps = get_memory_clk_period_ps(ctrl_num);
86 else if (mclk_ps >= 1070)
88 else if (mclk_ps >= 935)
90 else if (mclk_ps >= 833)
92 else if (mclk_ps >= 750)
94 else if (mclk_ps >= 681)
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
113 static inline unsigned int compute_cas_write_latency(
114 const unsigned int ctrl_num)
117 const unsigned int mclk_ps = get_memory_clk_period_ps(ctrl_num);
121 else if (mclk_ps >= 1875)
123 else if (mclk_ps >= 1500)
125 else if (mclk_ps >= 1250)
127 else if (mclk_ps >= 1070)
129 else if (mclk_ps >= 935)
131 else if (mclk_ps >= 833)
133 else if (mclk_ps >= 750)
137 printf("Warning: CWL is out of range\n");
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)
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 */
158 #ifdef CONFIG_SYS_FSL_DDR4
159 unsigned int bg_bits_cs_n = 0; /* Num of bank group bits */
161 unsigned int n_banks_per_sdram_device;
164 /* Compute CS_CONFIG only for existing ranks of each DIMM. */
167 if (dimm_params[dimm_number].n_ranks > 0) {
169 /* These fields only available in CS0_CONFIG */
170 if (!popts->memctl_interleaving)
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;
187 if ((dimm_number == 0 && dimm_params[0].n_ranks > 1) || \
188 (dimm_number == 1 && dimm_params[1].n_ranks > 0))
192 if ((dimm_number == 0 && dimm_params[0].n_ranks > 2) || \
193 (dimm_number >= 1 && dimm_params[dimm_number].n_ranks > 0))
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))
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;
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;
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;
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)
227 /* XXX: some implementation only have 1 bit starting at left */
228 | ((odt_rd_cfg & 0x7) << 20)
230 /* XXX: Some implementation only have 1 bit starting at left */
231 | ((odt_wr_cfg & 0x7) << 16)
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)
238 | ((col_bits_cs_n & 0x7) << 0)
240 debug("FSLDDR: cs[%d]_config = 0x%08x\n", i,ddr->cs[i].config);
243 /* Chip Select Configuration 2 (CSn_CONFIG_2) */
245 static void set_csn_config_2(int i, fsl_ddr_cfg_regs_t *ddr)
247 unsigned int pasr_cfg = 0; /* Partial array self refresh config */
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);
253 /* -3E = 667 CL5, -25 = CL6 800, -25E = CL5 800 */
255 #if !defined(CONFIG_SYS_FSL_DDR1)
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.
260 static inline int avoid_odt_overlap(const dimm_params_t *dimm_params)
262 #if CONFIG_DIMM_SLOTS_PER_CTLR == 1
263 if (dimm_params[0].n_ranks == 4)
267 #if CONFIG_DIMM_SLOTS_PER_CTLR == 2
268 if ((dimm_params[0].n_ranks == 2) &&
269 (dimm_params[1].n_ranks == 2))
272 #ifdef CONFIG_FSL_DDR_FIRST_SLOT_QUAD_CAPABLE
273 if (dimm_params[0].n_ranks == 4)
277 if ((dimm_params[0].n_ranks != 0) &&
278 (dimm_params[2].n_ranks != 0))
285 * DDR SDRAM Timing Configuration 0 (TIMING_CFG_0)
287 * Avoid writing for DDR I. The new PQ38 DDR controller
288 * dreams up non-zero default values to be backwards compatible.
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)
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 */
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);
313 #ifdef CONFIG_SYS_FSL_DDR4
314 /* tXP=max(4nCK, 6ns) */
315 int txp = max((int)mclk_ps * 4, 6000); /* unit=ps */
316 unsigned int data_rate = get_ddr_freq(ctrl_num);
318 /* for faster clock, need more time for data setup */
319 trwt_mclk = (data_rate/1000000 > 1900) ? 3 : 2;
321 act_pd_exit_mclk = picos_to_mclk(ctrl_num, txp);
322 pre_pd_exit_mclk = act_pd_exit_mclk;
324 * MRS_CYC = max(tMRD, tMOD)
325 * tMRD = 8nCK, tMOD = max(24nCK, 15ns)
327 tmrd_mclk = max(24U, picos_to_mclk(ctrl_num, 15000));
328 #elif defined(CONFIG_SYS_FSL_DDR3)
329 unsigned int data_rate = get_ddr_freq(ctrl_num);
334 * (tXARD and tXARDS). Empirical?
335 * The DDR3 spec has not tXARD,
336 * we use the tXP instead of it.
337 * tXP=max(3nCK, 7.5ns) for DDR3-800, 1066
338 * max(3nCK, 6ns) for DDR3-1333, 1600, 1866, 2133
339 * spec has not the tAXPD, we use
340 * tAXPD=1, need design to confirm.
342 txp = max((int)mclk_ps * 3, (mclk_ps > 1540 ? 7500 : 6000));
344 ip_rev = fsl_ddr_get_version(ctrl_num);
345 if (ip_rev >= 0x40700) {
347 * MRS_CYC = max(tMRD, tMOD)
348 * tMRD = 4nCK (8nCK for RDIMM)
349 * tMOD = max(12nCK, 15ns)
351 tmrd_mclk = max((unsigned int)12,
352 picos_to_mclk(ctrl_num, 15000));
356 * tMRD = 4nCK (8nCK for RDIMM)
358 if (popts->registered_dimm_en)
364 /* set the turnaround time */
367 * for single quad-rank DIMM and two-slot DIMMs
368 * to avoid ODT overlap
370 odt_overlap = avoid_odt_overlap(dimm_params);
371 switch (odt_overlap) {
384 /* for faster clock, need more time for data setup */
385 trwt_mclk = (data_rate/1000000 > 1800) ? 2 : 1;
387 if ((data_rate/1000000 > 1150) || (popts->memctl_interleaving))
390 if (popts->dynamic_power == 0) { /* powerdown is not used */
391 act_pd_exit_mclk = 1;
392 pre_pd_exit_mclk = 1;
395 /* act_pd_exit_mclk = tXARD, see above */
396 act_pd_exit_mclk = picos_to_mclk(ctrl_num, txp);
397 /* Mode register MR0[A12] is '1' - fast exit */
398 pre_pd_exit_mclk = act_pd_exit_mclk;
401 #else /* CONFIG_SYS_FSL_DDR2 */
403 * (tXARD and tXARDS). Empirical?
408 act_pd_exit_mclk = 2;
409 pre_pd_exit_mclk = 2;
414 if (popts->trwt_override)
415 trwt_mclk = popts->trwt;
417 ddr->timing_cfg_0 = (0
418 | ((trwt_mclk & 0x3) << 30) /* RWT */
419 | ((twrt_mclk & 0x3) << 28) /* WRT */
420 | ((trrt_mclk & 0x3) << 26) /* RRT */
421 | ((twwt_mclk & 0x3) << 24) /* WWT */
422 | ((act_pd_exit_mclk & 0xf) << 20) /* ACT_PD_EXIT */
423 | ((pre_pd_exit_mclk & 0xF) << 16) /* PRE_PD_EXIT */
424 | ((taxpd_mclk & 0xf) << 8) /* ODT_PD_EXIT */
425 | ((tmrd_mclk & 0x1f) << 0) /* MRS_CYC */
427 debug("FSLDDR: timing_cfg_0 = 0x%08x\n", ddr->timing_cfg_0);
429 #endif /* !defined(CONFIG_SYS_FSL_DDR1) */
431 /* DDR SDRAM Timing Configuration 3 (TIMING_CFG_3) */
432 static void set_timing_cfg_3(const unsigned int ctrl_num,
433 fsl_ddr_cfg_regs_t *ddr,
434 const memctl_options_t *popts,
435 const common_timing_params_t *common_dimm,
436 unsigned int cas_latency,
437 unsigned int additive_latency)
439 /* Extended precharge to activate interval (tRP) */
440 unsigned int ext_pretoact = 0;
441 /* Extended Activate to precharge interval (tRAS) */
442 unsigned int ext_acttopre = 0;
443 /* Extended activate to read/write interval (tRCD) */
444 unsigned int ext_acttorw = 0;
445 /* Extended refresh recovery time (tRFC) */
446 unsigned int ext_refrec;
447 /* Extended MCAS latency from READ cmd */
448 unsigned int ext_caslat = 0;
449 /* Extended additive latency */
450 unsigned int ext_add_lat = 0;
451 /* Extended last data to precharge interval (tWR) */
452 unsigned int ext_wrrec = 0;
454 unsigned int cntl_adj = 0;
456 ext_pretoact = picos_to_mclk(ctrl_num, common_dimm->trp_ps) >> 4;
457 ext_acttopre = picos_to_mclk(ctrl_num, common_dimm->tras_ps) >> 4;
458 ext_acttorw = picos_to_mclk(ctrl_num, common_dimm->trcd_ps) >> 4;
459 ext_caslat = (2 * cas_latency - 1) >> 4;
460 ext_add_lat = additive_latency >> 4;
461 #ifdef CONFIG_SYS_FSL_DDR4
462 ext_refrec = (picos_to_mclk(ctrl_num, common_dimm->trfc1_ps) - 8) >> 4;
464 ext_refrec = (picos_to_mclk(ctrl_num, common_dimm->trfc_ps) - 8) >> 4;
465 /* ext_wrrec only deals with 16 clock and above, or 14 with OTF */
467 ext_wrrec = (picos_to_mclk(ctrl_num, common_dimm->twr_ps) +
468 (popts->otf_burst_chop_en ? 2 : 0)) >> 4;
470 ddr->timing_cfg_3 = (0
471 | ((ext_pretoact & 0x1) << 28)
472 | ((ext_acttopre & 0x3) << 24)
473 | ((ext_acttorw & 0x1) << 22)
474 | ((ext_refrec & 0x1F) << 16)
475 | ((ext_caslat & 0x3) << 12)
476 | ((ext_add_lat & 0x1) << 10)
477 | ((ext_wrrec & 0x1) << 8)
478 | ((cntl_adj & 0x7) << 0)
480 debug("FSLDDR: timing_cfg_3 = 0x%08x\n", ddr->timing_cfg_3);
483 /* DDR SDRAM Timing Configuration 1 (TIMING_CFG_1) */
484 static void set_timing_cfg_1(const unsigned int ctrl_num,
485 fsl_ddr_cfg_regs_t *ddr,
486 const memctl_options_t *popts,
487 const common_timing_params_t *common_dimm,
488 unsigned int cas_latency)
490 /* Precharge-to-activate interval (tRP) */
491 unsigned char pretoact_mclk;
492 /* Activate to precharge interval (tRAS) */
493 unsigned char acttopre_mclk;
494 /* Activate to read/write interval (tRCD) */
495 unsigned char acttorw_mclk;
497 unsigned char caslat_ctrl;
498 /* Refresh recovery time (tRFC) ; trfc_low */
499 unsigned char refrec_ctrl;
500 /* Last data to precharge minimum interval (tWR) */
501 unsigned char wrrec_mclk;
502 /* Activate-to-activate interval (tRRD) */
503 unsigned char acttoact_mclk;
504 /* Last write data pair to read command issue interval (tWTR) */
505 unsigned char wrtord_mclk;
506 #ifdef CONFIG_SYS_FSL_DDR4
507 /* DDR4 supports 10, 12, 14, 16, 18, 20, 24 */
508 static const u8 wrrec_table[] = {
515 /* DDR_SDRAM_MODE doesn't support 9,11,13,15 */
516 static const u8 wrrec_table[] = {
517 1, 2, 3, 4, 5, 6, 7, 8, 10, 10, 12, 12, 14, 14, 0, 0};
520 pretoact_mclk = picos_to_mclk(ctrl_num, common_dimm->trp_ps);
521 acttopre_mclk = picos_to_mclk(ctrl_num, common_dimm->tras_ps);
522 acttorw_mclk = picos_to_mclk(ctrl_num, common_dimm->trcd_ps);
525 * Translate CAS Latency to a DDR controller field value:
527 * CAS Lat DDR I DDR II Ctrl
528 * Clocks SPD Bit SPD Bit Value
529 * ------- ------- ------- -----
540 #if defined(CONFIG_SYS_FSL_DDR1)
541 caslat_ctrl = (cas_latency + 1) & 0x07;
542 #elif defined(CONFIG_SYS_FSL_DDR2)
543 caslat_ctrl = 2 * cas_latency - 1;
546 * if the CAS latency more than 8 cycle,
547 * we need set extend bit for it at
548 * TIMING_CFG_3[EXT_CASLAT]
550 if (fsl_ddr_get_version(ctrl_num) <= 0x40400)
551 caslat_ctrl = 2 * cas_latency - 1;
553 caslat_ctrl = (cas_latency - 1) << 1;
556 #ifdef CONFIG_SYS_FSL_DDR4
557 refrec_ctrl = picos_to_mclk(ctrl_num, common_dimm->trfc1_ps) - 8;
558 wrrec_mclk = picos_to_mclk(ctrl_num, common_dimm->twr_ps);
559 acttoact_mclk = max(picos_to_mclk(ctrl_num, common_dimm->trrds_ps), 4U);
560 wrtord_mclk = max(2U, picos_to_mclk(ctrl_num, 2500));
561 if ((wrrec_mclk < 1) || (wrrec_mclk > 24))
562 printf("Error: WRREC doesn't support %d clocks\n", wrrec_mclk);
564 wrrec_mclk = wrrec_table[wrrec_mclk - 1];
566 refrec_ctrl = picos_to_mclk(ctrl_num, common_dimm->trfc_ps) - 8;
567 wrrec_mclk = picos_to_mclk(ctrl_num, common_dimm->twr_ps);
568 acttoact_mclk = picos_to_mclk(ctrl_num, common_dimm->trrd_ps);
569 wrtord_mclk = picos_to_mclk(ctrl_num, common_dimm->twtr_ps);
570 if ((wrrec_mclk < 1) || (wrrec_mclk > 16))
571 printf("Error: WRREC doesn't support %d clocks\n", wrrec_mclk);
573 wrrec_mclk = wrrec_table[wrrec_mclk - 1];
575 if (popts->otf_burst_chop_en)
579 * JEDEC has min requirement for tRRD
581 #if defined(CONFIG_SYS_FSL_DDR3)
582 if (acttoact_mclk < 4)
586 * JEDEC has some min requirements for tWTR
588 #if defined(CONFIG_SYS_FSL_DDR2)
591 #elif defined(CONFIG_SYS_FSL_DDR3)
595 if (popts->otf_burst_chop_en)
598 ddr->timing_cfg_1 = (0
599 | ((pretoact_mclk & 0x0F) << 28)
600 | ((acttopre_mclk & 0x0F) << 24)
601 | ((acttorw_mclk & 0xF) << 20)
602 | ((caslat_ctrl & 0xF) << 16)
603 | ((refrec_ctrl & 0xF) << 12)
604 | ((wrrec_mclk & 0x0F) << 8)
605 | ((acttoact_mclk & 0x0F) << 4)
606 | ((wrtord_mclk & 0x0F) << 0)
608 debug("FSLDDR: timing_cfg_1 = 0x%08x\n", ddr->timing_cfg_1);
611 /* DDR SDRAM Timing Configuration 2 (TIMING_CFG_2) */
612 static void set_timing_cfg_2(const unsigned int ctrl_num,
613 fsl_ddr_cfg_regs_t *ddr,
614 const memctl_options_t *popts,
615 const common_timing_params_t *common_dimm,
616 unsigned int cas_latency,
617 unsigned int additive_latency)
619 /* Additive latency */
620 unsigned char add_lat_mclk;
621 /* CAS-to-preamble override */
624 unsigned char wr_lat;
625 /* Read to precharge (tRTP) */
626 unsigned char rd_to_pre;
627 /* Write command to write data strobe timing adjustment */
628 unsigned char wr_data_delay;
629 /* Minimum CKE pulse width (tCKE) */
630 unsigned char cke_pls;
631 /* Window for four activates (tFAW) */
632 unsigned short four_act;
633 #ifdef CONFIG_SYS_FSL_DDR3
634 const unsigned int mclk_ps = get_memory_clk_period_ps(ctrl_num);
637 /* FIXME add check that this must be less than acttorw_mclk */
638 add_lat_mclk = additive_latency;
639 cpo = popts->cpo_override;
641 #if defined(CONFIG_SYS_FSL_DDR1)
643 * This is a lie. It should really be 1, but if it is
644 * set to 1, bits overlap into the old controller's
645 * otherwise unused ACSM field. If we leave it 0, then
646 * the HW will magically treat it as 1 for DDR 1. Oh Yea.
649 #elif defined(CONFIG_SYS_FSL_DDR2)
650 wr_lat = cas_latency - 1;
652 wr_lat = compute_cas_write_latency(ctrl_num);
655 #ifdef CONFIG_SYS_FSL_DDR4
656 rd_to_pre = picos_to_mclk(ctrl_num, 7500);
658 rd_to_pre = picos_to_mclk(ctrl_num, common_dimm->trtp_ps);
661 * JEDEC has some min requirements for tRTP
663 #if defined(CONFIG_SYS_FSL_DDR2)
666 #elif defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
670 if (popts->otf_burst_chop_en)
671 rd_to_pre += 2; /* according to UM */
673 wr_data_delay = popts->write_data_delay;
674 #ifdef CONFIG_SYS_FSL_DDR4
676 cke_pls = max(3U, picos_to_mclk(ctrl_num, 5000));
677 #elif defined(CONFIG_SYS_FSL_DDR3)
679 * cke pulse = max(3nCK, 7.5ns) for DDR3-800
680 * max(3nCK, 5.625ns) for DDR3-1066, 1333
681 * max(3nCK, 5ns) for DDR3-1600, 1866, 2133
683 cke_pls = max(3U, picos_to_mclk(ctrl_num, mclk_ps > 1870 ? 7500 :
684 (mclk_ps > 1245 ? 5625 : 5000)));
686 cke_pls = FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR;
688 four_act = picos_to_mclk(ctrl_num,
689 popts->tfaw_window_four_activates_ps);
691 ddr->timing_cfg_2 = (0
692 | ((add_lat_mclk & 0xf) << 28)
693 | ((cpo & 0x1f) << 23)
694 | ((wr_lat & 0xf) << 19)
695 | ((wr_lat & 0x10) << 14)
696 | ((rd_to_pre & RD_TO_PRE_MASK) << RD_TO_PRE_SHIFT)
697 | ((wr_data_delay & WR_DATA_DELAY_MASK) << WR_DATA_DELAY_SHIFT)
698 | ((cke_pls & 0x7) << 6)
699 | ((four_act & 0x3f) << 0)
701 debug("FSLDDR: timing_cfg_2 = 0x%08x\n", ddr->timing_cfg_2);
704 /* DDR SDRAM Register Control Word */
705 static void set_ddr_sdram_rcw(fsl_ddr_cfg_regs_t *ddr,
706 const memctl_options_t *popts,
707 const common_timing_params_t *common_dimm)
709 if (common_dimm->all_dimms_registered &&
710 !common_dimm->all_dimms_unbuffered) {
711 if (popts->rcw_override) {
712 ddr->ddr_sdram_rcw_1 = popts->rcw_1;
713 ddr->ddr_sdram_rcw_2 = popts->rcw_2;
715 ddr->ddr_sdram_rcw_1 =
716 common_dimm->rcw[0] << 28 | \
717 common_dimm->rcw[1] << 24 | \
718 common_dimm->rcw[2] << 20 | \
719 common_dimm->rcw[3] << 16 | \
720 common_dimm->rcw[4] << 12 | \
721 common_dimm->rcw[5] << 8 | \
722 common_dimm->rcw[6] << 4 | \
724 ddr->ddr_sdram_rcw_2 =
725 common_dimm->rcw[8] << 28 | \
726 common_dimm->rcw[9] << 24 | \
727 common_dimm->rcw[10] << 20 | \
728 common_dimm->rcw[11] << 16 | \
729 common_dimm->rcw[12] << 12 | \
730 common_dimm->rcw[13] << 8 | \
731 common_dimm->rcw[14] << 4 | \
732 common_dimm->rcw[15];
734 debug("FSLDDR: ddr_sdram_rcw_1 = 0x%08x\n", ddr->ddr_sdram_rcw_1);
735 debug("FSLDDR: ddr_sdram_rcw_2 = 0x%08x\n", ddr->ddr_sdram_rcw_2);
739 /* DDR SDRAM control configuration (DDR_SDRAM_CFG) */
740 static void set_ddr_sdram_cfg(fsl_ddr_cfg_regs_t *ddr,
741 const memctl_options_t *popts,
742 const common_timing_params_t *common_dimm)
744 unsigned int mem_en; /* DDR SDRAM interface logic enable */
745 unsigned int sren; /* Self refresh enable (during sleep) */
746 unsigned int ecc_en; /* ECC enable. */
747 unsigned int rd_en; /* Registered DIMM enable */
748 unsigned int sdram_type; /* Type of SDRAM */
749 unsigned int dyn_pwr; /* Dynamic power management mode */
750 unsigned int dbw; /* DRAM dta bus width */
751 unsigned int eight_be = 0; /* 8-beat burst enable, DDR2 is zero */
752 unsigned int ncap = 0; /* Non-concurrent auto-precharge */
753 unsigned int threet_en; /* Enable 3T timing */
754 unsigned int twot_en; /* Enable 2T timing */
755 unsigned int ba_intlv_ctl; /* Bank (CS) interleaving control */
756 unsigned int x32_en = 0; /* x32 enable */
757 unsigned int pchb8 = 0; /* precharge bit 8 enable */
758 unsigned int hse; /* Global half strength override */
759 unsigned int acc_ecc_en = 0; /* Accumulated ECC enable */
760 unsigned int mem_halt = 0; /* memory controller halt */
761 unsigned int bi = 0; /* Bypass initialization */
764 sren = popts->self_refresh_in_sleep;
765 if (common_dimm->all_dimms_ecc_capable) {
766 /* Allow setting of ECC only if all DIMMs are ECC. */
767 ecc_en = popts->ecc_mode;
772 if (common_dimm->all_dimms_registered &&
773 !common_dimm->all_dimms_unbuffered) {
778 twot_en = popts->twot_en;
781 sdram_type = CONFIG_FSL_SDRAM_TYPE;
783 dyn_pwr = popts->dynamic_power;
784 dbw = popts->data_bus_width;
785 /* 8-beat burst enable DDR-III case
786 * we must clear it when use the on-the-fly mode,
787 * must set it when use the 32-bits bus mode.
789 if ((sdram_type == SDRAM_TYPE_DDR3) ||
790 (sdram_type == SDRAM_TYPE_DDR4)) {
791 if (popts->burst_length == DDR_BL8)
793 if (popts->burst_length == DDR_OTF)
799 threet_en = popts->threet_en;
800 ba_intlv_ctl = popts->ba_intlv_ctl;
801 hse = popts->half_strength_driver_enable;
803 /* set when ddr bus width < 64 */
804 acc_ecc_en = (dbw != 0 && ecc_en == 1) ? 1 : 0;
806 ddr->ddr_sdram_cfg = (0
807 | ((mem_en & 0x1) << 31)
808 | ((sren & 0x1) << 30)
809 | ((ecc_en & 0x1) << 29)
810 | ((rd_en & 0x1) << 28)
811 | ((sdram_type & 0x7) << 24)
812 | ((dyn_pwr & 0x1) << 21)
813 | ((dbw & 0x3) << 19)
814 | ((eight_be & 0x1) << 18)
815 | ((ncap & 0x1) << 17)
816 | ((threet_en & 0x1) << 16)
817 | ((twot_en & 0x1) << 15)
818 | ((ba_intlv_ctl & 0x7F) << 8)
819 | ((x32_en & 0x1) << 5)
820 | ((pchb8 & 0x1) << 4)
822 | ((acc_ecc_en & 0x1) << 2)
823 | ((mem_halt & 0x1) << 1)
826 debug("FSLDDR: ddr_sdram_cfg = 0x%08x\n", ddr->ddr_sdram_cfg);
829 /* DDR SDRAM control configuration 2 (DDR_SDRAM_CFG_2) */
830 static void set_ddr_sdram_cfg_2(const unsigned int ctrl_num,
831 fsl_ddr_cfg_regs_t *ddr,
832 const memctl_options_t *popts,
833 const unsigned int unq_mrs_en)
835 unsigned int frc_sr = 0; /* Force self refresh */
836 unsigned int sr_ie = 0; /* Self-refresh interrupt enable */
837 unsigned int odt_cfg = 0; /* ODT configuration */
838 unsigned int num_pr; /* Number of posted refreshes */
839 unsigned int slow = 0; /* DDR will be run less than 1250 */
840 unsigned int x4_en = 0; /* x4 DRAM enable */
841 unsigned int obc_cfg; /* On-The-Fly Burst Chop Cfg */
842 unsigned int ap_en; /* Address Parity Enable */
843 unsigned int d_init; /* DRAM data initialization */
844 unsigned int rcw_en = 0; /* Register Control Word Enable */
845 unsigned int md_en = 0; /* Mirrored DIMM Enable */
846 unsigned int qd_en = 0; /* quad-rank DIMM Enable */
848 #ifndef CONFIG_SYS_FSL_DDR4
849 unsigned int dll_rst_dis = 1; /* DLL reset disable */
850 unsigned int dqs_cfg; /* DQS configuration */
852 dqs_cfg = popts->dqs_config;
854 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
855 if (popts->cs_local_opts[i].odt_rd_cfg
856 || popts->cs_local_opts[i].odt_wr_cfg) {
857 odt_cfg = SDRAM_CFG2_ODT_ONLY_READ;
862 num_pr = 1; /* Make this configurable */
866 * {TIMING_CFG_1[PRETOACT]
867 * + [DDR_SDRAM_CFG_2[NUM_PR]
868 * * ({EXT_REFREC || REFREC} + 8 + 2)]}
869 * << DDR_SDRAM_INTERVAL[REFINT]
871 #if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
872 obc_cfg = popts->otf_burst_chop_en;
877 #if (CONFIG_SYS_FSL_DDR_VER >= FSL_DDR_VER_4_7)
878 slow = get_ddr_freq(ctrl_num) < 1249000000;
881 if (popts->registered_dimm_en) {
883 ap_en = popts->ap_en;
888 x4_en = popts->x4_en ? 1 : 0;
890 #if defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
891 /* Use the DDR controller to auto initialize memory. */
892 d_init = popts->ecc_init_using_memctl;
893 ddr->ddr_data_init = CONFIG_MEM_INIT_VALUE;
894 debug("DDR: ddr_data_init = 0x%08x\n", ddr->ddr_data_init);
896 /* Memory will be initialized via DMA, or not at all. */
900 #if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
901 md_en = popts->mirrored_dimm;
903 qd_en = popts->quad_rank_present ? 1 : 0;
904 ddr->ddr_sdram_cfg_2 = (0
905 | ((frc_sr & 0x1) << 31)
906 | ((sr_ie & 0x1) << 30)
907 #ifndef CONFIG_SYS_FSL_DDR4
908 | ((dll_rst_dis & 0x1) << 29)
909 | ((dqs_cfg & 0x3) << 26)
911 | ((odt_cfg & 0x3) << 21)
912 | ((num_pr & 0xf) << 12)
917 | ((obc_cfg & 0x1) << 6)
918 | ((ap_en & 0x1) << 5)
919 | ((d_init & 0x1) << 4)
920 | ((rcw_en & 0x1) << 2)
921 | ((md_en & 0x1) << 0)
923 debug("FSLDDR: ddr_sdram_cfg_2 = 0x%08x\n", ddr->ddr_sdram_cfg_2);
926 #ifdef CONFIG_SYS_FSL_DDR4
927 /* DDR SDRAM Mode configuration 2 (DDR_SDRAM_MODE_2) */
928 static void set_ddr_sdram_mode_2(const unsigned int ctrl_num,
929 fsl_ddr_cfg_regs_t *ddr,
930 const memctl_options_t *popts,
931 const common_timing_params_t *common_dimm,
932 const unsigned int unq_mrs_en)
934 unsigned short esdmode2 = 0; /* Extended SDRAM mode 2 */
935 unsigned short esdmode3 = 0; /* Extended SDRAM mode 3 */
937 unsigned int wr_crc = 0; /* Disable */
938 unsigned int rtt_wr = 0; /* Rtt_WR - dynamic ODT off */
939 unsigned int srt = 0; /* self-refresh temerature, normal range */
940 unsigned int cwl = compute_cas_write_latency(ctrl_num) - 9;
941 unsigned int mpr = 0; /* serial */
943 const unsigned int mclk_ps = get_memory_clk_period_ps(ctrl_num);
945 if (popts->rtt_override)
946 rtt_wr = popts->rtt_wr_override_value;
948 rtt_wr = popts->cs_local_opts[0].odt_rtt_wr;
950 if (common_dimm->extended_op_srt)
951 srt = common_dimm->extended_op_srt;
954 | ((wr_crc & 0x1) << 12)
955 | ((rtt_wr & 0x3) << 9)
957 | ((cwl & 0x7) << 3));
961 else if (mclk_ps >= 833)
967 | ((mpr & 0x3) << 11)
968 | ((wc_lat & 0x3) << 9));
970 ddr->ddr_sdram_mode_2 = (0
971 | ((esdmode2 & 0xFFFF) << 16)
972 | ((esdmode3 & 0xFFFF) << 0)
974 debug("FSLDDR: ddr_sdram_mode_2 = 0x%08x\n", ddr->ddr_sdram_mode_2);
976 if (unq_mrs_en) { /* unique mode registers are supported */
977 for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
978 if (popts->rtt_override)
979 rtt_wr = popts->rtt_wr_override_value;
981 rtt_wr = popts->cs_local_opts[i].odt_rtt_wr;
983 esdmode2 &= 0xF9FF; /* clear bit 10, 9 */
984 esdmode2 |= (rtt_wr & 0x3) << 9;
987 ddr->ddr_sdram_mode_4 = (0
988 | ((esdmode2 & 0xFFFF) << 16)
989 | ((esdmode3 & 0xFFFF) << 0)
993 ddr->ddr_sdram_mode_6 = (0
994 | ((esdmode2 & 0xFFFF) << 16)
995 | ((esdmode3 & 0xFFFF) << 0)
999 ddr->ddr_sdram_mode_8 = (0
1000 | ((esdmode2 & 0xFFFF) << 16)
1001 | ((esdmode3 & 0xFFFF) << 0)
1006 debug("FSLDDR: ddr_sdram_mode_4 = 0x%08x\n",
1007 ddr->ddr_sdram_mode_4);
1008 debug("FSLDDR: ddr_sdram_mode_6 = 0x%08x\n",
1009 ddr->ddr_sdram_mode_6);
1010 debug("FSLDDR: ddr_sdram_mode_8 = 0x%08x\n",
1011 ddr->ddr_sdram_mode_8);
1014 #elif defined(CONFIG_SYS_FSL_DDR3)
1015 /* DDR SDRAM Mode configuration 2 (DDR_SDRAM_MODE_2) */
1016 static void set_ddr_sdram_mode_2(const unsigned int ctrl_num,
1017 fsl_ddr_cfg_regs_t *ddr,
1018 const memctl_options_t *popts,
1019 const common_timing_params_t *common_dimm,
1020 const unsigned int unq_mrs_en)
1022 unsigned short esdmode2 = 0; /* Extended SDRAM mode 2 */
1023 unsigned short esdmode3 = 0; /* Extended SDRAM mode 3 */
1025 unsigned int rtt_wr = 0; /* Rtt_WR - dynamic ODT off */
1026 unsigned int srt = 0; /* self-refresh temerature, normal range */
1027 unsigned int asr = 0; /* auto self-refresh disable */
1028 unsigned int cwl = compute_cas_write_latency(ctrl_num) - 5;
1029 unsigned int pasr = 0; /* partial array self refresh disable */
1031 if (popts->rtt_override)
1032 rtt_wr = popts->rtt_wr_override_value;
1034 rtt_wr = popts->cs_local_opts[0].odt_rtt_wr;
1036 if (common_dimm->extended_op_srt)
1037 srt = common_dimm->extended_op_srt;
1040 | ((rtt_wr & 0x3) << 9)
1041 | ((srt & 0x1) << 7)
1042 | ((asr & 0x1) << 6)
1043 | ((cwl & 0x7) << 3)
1044 | ((pasr & 0x7) << 0));
1045 ddr->ddr_sdram_mode_2 = (0
1046 | ((esdmode2 & 0xFFFF) << 16)
1047 | ((esdmode3 & 0xFFFF) << 0)
1049 debug("FSLDDR: ddr_sdram_mode_2 = 0x%08x\n", ddr->ddr_sdram_mode_2);
1051 if (unq_mrs_en) { /* unique mode registers are supported */
1052 for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
1053 if (popts->rtt_override)
1054 rtt_wr = popts->rtt_wr_override_value;
1056 rtt_wr = popts->cs_local_opts[i].odt_rtt_wr;
1058 esdmode2 &= 0xF9FF; /* clear bit 10, 9 */
1059 esdmode2 |= (rtt_wr & 0x3) << 9;
1062 ddr->ddr_sdram_mode_4 = (0
1063 | ((esdmode2 & 0xFFFF) << 16)
1064 | ((esdmode3 & 0xFFFF) << 0)
1068 ddr->ddr_sdram_mode_6 = (0
1069 | ((esdmode2 & 0xFFFF) << 16)
1070 | ((esdmode3 & 0xFFFF) << 0)
1074 ddr->ddr_sdram_mode_8 = (0
1075 | ((esdmode2 & 0xFFFF) << 16)
1076 | ((esdmode3 & 0xFFFF) << 0)
1081 debug("FSLDDR: ddr_sdram_mode_4 = 0x%08x\n",
1082 ddr->ddr_sdram_mode_4);
1083 debug("FSLDDR: ddr_sdram_mode_6 = 0x%08x\n",
1084 ddr->ddr_sdram_mode_6);
1085 debug("FSLDDR: ddr_sdram_mode_8 = 0x%08x\n",
1086 ddr->ddr_sdram_mode_8);
1090 #else /* for DDR2 and DDR1 */
1091 /* DDR SDRAM Mode configuration 2 (DDR_SDRAM_MODE_2) */
1092 static void set_ddr_sdram_mode_2(const unsigned int ctrl_num,
1093 fsl_ddr_cfg_regs_t *ddr,
1094 const memctl_options_t *popts,
1095 const common_timing_params_t *common_dimm,
1096 const unsigned int unq_mrs_en)
1098 unsigned short esdmode2 = 0; /* Extended SDRAM mode 2 */
1099 unsigned short esdmode3 = 0; /* Extended SDRAM mode 3 */
1101 ddr->ddr_sdram_mode_2 = (0
1102 | ((esdmode2 & 0xFFFF) << 16)
1103 | ((esdmode3 & 0xFFFF) << 0)
1105 debug("FSLDDR: ddr_sdram_mode_2 = 0x%08x\n", ddr->ddr_sdram_mode_2);
1109 #ifdef CONFIG_SYS_FSL_DDR4
1110 /* DDR SDRAM Mode configuration 9 (DDR_SDRAM_MODE_9) */
1111 static void set_ddr_sdram_mode_9(fsl_ddr_cfg_regs_t *ddr,
1112 const memctl_options_t *popts,
1113 const common_timing_params_t *common_dimm,
1114 const unsigned int unq_mrs_en)
1117 unsigned short esdmode4 = 0; /* Extended SDRAM mode 4 */
1118 unsigned short esdmode5; /* Extended SDRAM mode 5 */
1120 esdmode5 = 0x00000500; /* Data mask enabled */
1122 ddr->ddr_sdram_mode_9 = (0
1123 | ((esdmode4 & 0xffff) << 16)
1124 | ((esdmode5 & 0xffff) << 0)
1127 /* only mode_9 use 0x500, others use 0x400 */
1128 esdmode5 = 0x00000400; /* Data mask enabled */
1130 debug("FSLDDR: ddr_sdram_mode_9) = 0x%08x\n", ddr->ddr_sdram_mode_9);
1131 if (unq_mrs_en) { /* unique mode registers are supported */
1132 for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
1135 ddr->ddr_sdram_mode_11 = (0
1136 | ((esdmode4 & 0xFFFF) << 16)
1137 | ((esdmode5 & 0xFFFF) << 0)
1141 ddr->ddr_sdram_mode_13 = (0
1142 | ((esdmode4 & 0xFFFF) << 16)
1143 | ((esdmode5 & 0xFFFF) << 0)
1147 ddr->ddr_sdram_mode_15 = (0
1148 | ((esdmode4 & 0xFFFF) << 16)
1149 | ((esdmode5 & 0xFFFF) << 0)
1154 debug("FSLDDR: ddr_sdram_mode_11 = 0x%08x\n",
1155 ddr->ddr_sdram_mode_11);
1156 debug("FSLDDR: ddr_sdram_mode_13 = 0x%08x\n",
1157 ddr->ddr_sdram_mode_13);
1158 debug("FSLDDR: ddr_sdram_mode_15 = 0x%08x\n",
1159 ddr->ddr_sdram_mode_15);
1163 /* DDR SDRAM Mode configuration 10 (DDR_SDRAM_MODE_10) */
1164 static void set_ddr_sdram_mode_10(const unsigned int ctrl_num,
1165 fsl_ddr_cfg_regs_t *ddr,
1166 const memctl_options_t *popts,
1167 const common_timing_params_t *common_dimm,
1168 const unsigned int unq_mrs_en)
1171 unsigned short esdmode6 = 0; /* Extended SDRAM mode 6 */
1172 unsigned short esdmode7 = 0; /* Extended SDRAM mode 7 */
1173 unsigned int tccdl_min = picos_to_mclk(ctrl_num, common_dimm->tccdl_ps);
1175 esdmode6 = ((tccdl_min - 4) & 0x7) << 10;
1177 ddr->ddr_sdram_mode_10 = (0
1178 | ((esdmode6 & 0xffff) << 16)
1179 | ((esdmode7 & 0xffff) << 0)
1181 debug("FSLDDR: ddr_sdram_mode_10) = 0x%08x\n", ddr->ddr_sdram_mode_10);
1182 if (unq_mrs_en) { /* unique mode registers are supported */
1183 for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
1186 ddr->ddr_sdram_mode_12 = (0
1187 | ((esdmode6 & 0xFFFF) << 16)
1188 | ((esdmode7 & 0xFFFF) << 0)
1192 ddr->ddr_sdram_mode_14 = (0
1193 | ((esdmode6 & 0xFFFF) << 16)
1194 | ((esdmode7 & 0xFFFF) << 0)
1198 ddr->ddr_sdram_mode_16 = (0
1199 | ((esdmode6 & 0xFFFF) << 16)
1200 | ((esdmode7 & 0xFFFF) << 0)
1205 debug("FSLDDR: ddr_sdram_mode_12 = 0x%08x\n",
1206 ddr->ddr_sdram_mode_12);
1207 debug("FSLDDR: ddr_sdram_mode_14 = 0x%08x\n",
1208 ddr->ddr_sdram_mode_14);
1209 debug("FSLDDR: ddr_sdram_mode_16 = 0x%08x\n",
1210 ddr->ddr_sdram_mode_16);
1216 /* DDR SDRAM Interval Configuration (DDR_SDRAM_INTERVAL) */
1217 static void set_ddr_sdram_interval(const unsigned int ctrl_num,
1218 fsl_ddr_cfg_regs_t *ddr,
1219 const memctl_options_t *popts,
1220 const common_timing_params_t *common_dimm)
1222 unsigned int refint; /* Refresh interval */
1223 unsigned int bstopre; /* Precharge interval */
1225 refint = picos_to_mclk(ctrl_num, common_dimm->refresh_rate_ps);
1227 bstopre = popts->bstopre;
1229 /* refint field used 0x3FFF in earlier controllers */
1230 ddr->ddr_sdram_interval = (0
1231 | ((refint & 0xFFFF) << 16)
1232 | ((bstopre & 0x3FFF) << 0)
1234 debug("FSLDDR: ddr_sdram_interval = 0x%08x\n", ddr->ddr_sdram_interval);
1237 #ifdef CONFIG_SYS_FSL_DDR4
1238 /* DDR SDRAM Mode configuration set (DDR_SDRAM_MODE) */
1239 static void set_ddr_sdram_mode(const unsigned int ctrl_num,
1240 fsl_ddr_cfg_regs_t *ddr,
1241 const memctl_options_t *popts,
1242 const common_timing_params_t *common_dimm,
1243 unsigned int cas_latency,
1244 unsigned int additive_latency,
1245 const unsigned int unq_mrs_en)
1248 unsigned short esdmode; /* Extended SDRAM mode */
1249 unsigned short sdmode; /* SDRAM mode */
1251 /* Mode Register - MR1 */
1252 unsigned int qoff = 0; /* Output buffer enable 0=yes, 1=no */
1253 unsigned int tdqs_en = 0; /* TDQS Enable: 0=no, 1=yes */
1255 unsigned int wrlvl_en = 0; /* Write level enable: 0=no, 1=yes */
1256 unsigned int al = 0; /* Posted CAS# additive latency (AL) */
1257 unsigned int dic = 0; /* Output driver impedance, 40ohm */
1258 unsigned int dll_en = 1; /* DLL Enable 1=Enable (Normal),
1259 0=Disable (Test/Debug) */
1261 /* Mode Register - MR0 */
1262 unsigned int wr = 0; /* Write Recovery */
1263 unsigned int dll_rst; /* DLL Reset */
1264 unsigned int mode; /* Normal=0 or Test=1 */
1265 unsigned int caslat = 4;/* CAS# latency, default set as 6 cycles */
1266 /* BT: Burst Type (0=Nibble Sequential, 1=Interleaved) */
1268 unsigned int bl; /* BL: Burst Length */
1270 unsigned int wr_mclk;
1271 /* DDR4 support WR 10, 12, 14, 16, 18, 20, 24 */
1272 static const u8 wr_table[] = {
1273 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 6, 6};
1274 /* DDR4 support CAS 9, 10, 11, 12, 13, 14, 15, 16, 18, 20, 22, 24 */
1275 static const u8 cas_latency_table[] = {
1276 0, 1, 2, 3, 4, 5, 6, 7, 8, 8,
1277 9, 9, 10, 10, 11, 11};
1279 if (popts->rtt_override)
1280 rtt = popts->rtt_override_value;
1282 rtt = popts->cs_local_opts[0].odt_rtt_norm;
1284 if (additive_latency == (cas_latency - 1))
1286 if (additive_latency == (cas_latency - 2))
1289 if (popts->quad_rank_present)
1290 dic = 1; /* output driver impedance 240/7 ohm */
1293 * The esdmode value will also be used for writing
1294 * MR1 during write leveling for DDR3, although the
1295 * bits specifically related to the write leveling
1296 * scheme will be handled automatically by the DDR
1297 * controller. so we set the wrlvl_en = 0 here.
1300 | ((qoff & 0x1) << 12)
1301 | ((tdqs_en & 0x1) << 11)
1302 | ((rtt & 0x7) << 8)
1303 | ((wrlvl_en & 0x1) << 7)
1305 | ((dic & 0x3) << 1) /* DIC field is split */
1306 | ((dll_en & 0x1) << 0)
1310 * DLL control for precharge PD
1311 * 0=slow exit DLL off (tXPDLL)
1312 * 1=fast exit DLL on (tXP)
1315 wr_mclk = picos_to_mclk(ctrl_num, common_dimm->twr_ps);
1316 if (wr_mclk <= 24) {
1317 wr = wr_table[wr_mclk - 10];
1319 printf("Error: unsupported write recovery for mode register wr_mclk = %d\n",
1323 dll_rst = 0; /* dll no reset */
1324 mode = 0; /* normal mode */
1326 /* look up table to get the cas latency bits */
1327 if (cas_latency >= 9 && cas_latency <= 24)
1328 caslat = cas_latency_table[cas_latency - 9];
1330 printf("Error: unsupported cas latency for mode register\n");
1332 bt = 0; /* Nibble sequential */
1334 switch (popts->burst_length) {
1345 printf("Error: invalid burst length of %u specified. ",
1346 popts->burst_length);
1347 puts("Defaulting to on-the-fly BC4 or BL8 beats.\n");
1354 | ((dll_rst & 0x1) << 8)
1355 | ((mode & 0x1) << 7)
1356 | (((caslat >> 1) & 0x7) << 4)
1358 | ((caslat & 1) << 2)
1362 ddr->ddr_sdram_mode = (0
1363 | ((esdmode & 0xFFFF) << 16)
1364 | ((sdmode & 0xFFFF) << 0)
1367 debug("FSLDDR: ddr_sdram_mode = 0x%08x\n", ddr->ddr_sdram_mode);
1369 if (unq_mrs_en) { /* unique mode registers are supported */
1370 for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
1371 if (popts->rtt_override)
1372 rtt = popts->rtt_override_value;
1374 rtt = popts->cs_local_opts[i].odt_rtt_norm;
1376 esdmode &= 0xF8FF; /* clear bit 10,9,8 for rtt */
1377 esdmode |= (rtt & 0x7) << 8;
1380 ddr->ddr_sdram_mode_3 = (0
1381 | ((esdmode & 0xFFFF) << 16)
1382 | ((sdmode & 0xFFFF) << 0)
1386 ddr->ddr_sdram_mode_5 = (0
1387 | ((esdmode & 0xFFFF) << 16)
1388 | ((sdmode & 0xFFFF) << 0)
1392 ddr->ddr_sdram_mode_7 = (0
1393 | ((esdmode & 0xFFFF) << 16)
1394 | ((sdmode & 0xFFFF) << 0)
1399 debug("FSLDDR: ddr_sdram_mode_3 = 0x%08x\n",
1400 ddr->ddr_sdram_mode_3);
1401 debug("FSLDDR: ddr_sdram_mode_5 = 0x%08x\n",
1402 ddr->ddr_sdram_mode_5);
1403 debug("FSLDDR: ddr_sdram_mode_5 = 0x%08x\n",
1404 ddr->ddr_sdram_mode_5);
1408 #elif defined(CONFIG_SYS_FSL_DDR3)
1409 /* DDR SDRAM Mode configuration set (DDR_SDRAM_MODE) */
1410 static void set_ddr_sdram_mode(const unsigned int ctrl_num,
1411 fsl_ddr_cfg_regs_t *ddr,
1412 const memctl_options_t *popts,
1413 const common_timing_params_t *common_dimm,
1414 unsigned int cas_latency,
1415 unsigned int additive_latency,
1416 const unsigned int unq_mrs_en)
1419 unsigned short esdmode; /* Extended SDRAM mode */
1420 unsigned short sdmode; /* SDRAM mode */
1422 /* Mode Register - MR1 */
1423 unsigned int qoff = 0; /* Output buffer enable 0=yes, 1=no */
1424 unsigned int tdqs_en = 0; /* TDQS Enable: 0=no, 1=yes */
1426 unsigned int wrlvl_en = 0; /* Write level enable: 0=no, 1=yes */
1427 unsigned int al = 0; /* Posted CAS# additive latency (AL) */
1428 unsigned int dic = 0; /* Output driver impedance, 40ohm */
1429 unsigned int dll_en = 0; /* DLL Enable 0=Enable (Normal),
1430 1=Disable (Test/Debug) */
1432 /* Mode Register - MR0 */
1433 unsigned int dll_on; /* DLL control for precharge PD, 0=off, 1=on */
1434 unsigned int wr = 0; /* Write Recovery */
1435 unsigned int dll_rst; /* DLL Reset */
1436 unsigned int mode; /* Normal=0 or Test=1 */
1437 unsigned int caslat = 4;/* CAS# latency, default set as 6 cycles */
1438 /* BT: Burst Type (0=Nibble Sequential, 1=Interleaved) */
1440 unsigned int bl; /* BL: Burst Length */
1442 unsigned int wr_mclk;
1444 * DDR_SDRAM_MODE doesn't support 9,11,13,15
1445 * Please refer JEDEC Standard No. 79-3E for Mode Register MR0
1448 static const u8 wr_table[] = {1, 2, 3, 4, 5, 5, 6, 6, 7, 7, 0, 0};
1450 if (popts->rtt_override)
1451 rtt = popts->rtt_override_value;
1453 rtt = popts->cs_local_opts[0].odt_rtt_norm;
1455 if (additive_latency == (cas_latency - 1))
1457 if (additive_latency == (cas_latency - 2))
1460 if (popts->quad_rank_present)
1461 dic = 1; /* output driver impedance 240/7 ohm */
1464 * The esdmode value will also be used for writing
1465 * MR1 during write leveling for DDR3, although the
1466 * bits specifically related to the write leveling
1467 * scheme will be handled automatically by the DDR
1468 * controller. so we set the wrlvl_en = 0 here.
1471 | ((qoff & 0x1) << 12)
1472 | ((tdqs_en & 0x1) << 11)
1473 | ((rtt & 0x4) << 7) /* rtt field is split */
1474 | ((wrlvl_en & 0x1) << 7)
1475 | ((rtt & 0x2) << 5) /* rtt field is split */
1476 | ((dic & 0x2) << 4) /* DIC field is split */
1478 | ((rtt & 0x1) << 2) /* rtt field is split */
1479 | ((dic & 0x1) << 1) /* DIC field is split */
1480 | ((dll_en & 0x1) << 0)
1484 * DLL control for precharge PD
1485 * 0=slow exit DLL off (tXPDLL)
1486 * 1=fast exit DLL on (tXP)
1490 wr_mclk = picos_to_mclk(ctrl_num, common_dimm->twr_ps);
1491 if (wr_mclk <= 16) {
1492 wr = wr_table[wr_mclk - 5];
1494 printf("Error: unsupported write recovery for mode register "
1495 "wr_mclk = %d\n", wr_mclk);
1498 dll_rst = 0; /* dll no reset */
1499 mode = 0; /* normal mode */
1501 /* look up table to get the cas latency bits */
1502 if (cas_latency >= 5 && cas_latency <= 16) {
1503 unsigned char cas_latency_table[] = {
1509 0xc, /* 10 clocks */
1510 0xe, /* 11 clocks */
1511 0x1, /* 12 clocks */
1512 0x3, /* 13 clocks */
1513 0x5, /* 14 clocks */
1514 0x7, /* 15 clocks */
1515 0x9, /* 16 clocks */
1517 caslat = cas_latency_table[cas_latency - 5];
1519 printf("Error: unsupported cas latency for mode register\n");
1522 bt = 0; /* Nibble sequential */
1524 switch (popts->burst_length) {
1535 printf("Error: invalid burst length of %u specified. "
1536 " Defaulting to on-the-fly BC4 or BL8 beats.\n",
1537 popts->burst_length);
1543 | ((dll_on & 0x1) << 12)
1545 | ((dll_rst & 0x1) << 8)
1546 | ((mode & 0x1) << 7)
1547 | (((caslat >> 1) & 0x7) << 4)
1549 | ((caslat & 1) << 2)
1553 ddr->ddr_sdram_mode = (0
1554 | ((esdmode & 0xFFFF) << 16)
1555 | ((sdmode & 0xFFFF) << 0)
1558 debug("FSLDDR: ddr_sdram_mode = 0x%08x\n", ddr->ddr_sdram_mode);
1560 if (unq_mrs_en) { /* unique mode registers are supported */
1561 for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
1562 if (popts->rtt_override)
1563 rtt = popts->rtt_override_value;
1565 rtt = popts->cs_local_opts[i].odt_rtt_norm;
1567 esdmode &= 0xFDBB; /* clear bit 9,6,2 */
1569 | ((rtt & 0x4) << 7) /* rtt field is split */
1570 | ((rtt & 0x2) << 5) /* rtt field is split */
1571 | ((rtt & 0x1) << 2) /* rtt field is split */
1575 ddr->ddr_sdram_mode_3 = (0
1576 | ((esdmode & 0xFFFF) << 16)
1577 | ((sdmode & 0xFFFF) << 0)
1581 ddr->ddr_sdram_mode_5 = (0
1582 | ((esdmode & 0xFFFF) << 16)
1583 | ((sdmode & 0xFFFF) << 0)
1587 ddr->ddr_sdram_mode_7 = (0
1588 | ((esdmode & 0xFFFF) << 16)
1589 | ((sdmode & 0xFFFF) << 0)
1594 debug("FSLDDR: ddr_sdram_mode_3 = 0x%08x\n",
1595 ddr->ddr_sdram_mode_3);
1596 debug("FSLDDR: ddr_sdram_mode_5 = 0x%08x\n",
1597 ddr->ddr_sdram_mode_5);
1598 debug("FSLDDR: ddr_sdram_mode_5 = 0x%08x\n",
1599 ddr->ddr_sdram_mode_5);
1603 #else /* !CONFIG_SYS_FSL_DDR3 */
1605 /* DDR SDRAM Mode configuration set (DDR_SDRAM_MODE) */
1606 static void set_ddr_sdram_mode(const unsigned int ctrl_num,
1607 fsl_ddr_cfg_regs_t *ddr,
1608 const memctl_options_t *popts,
1609 const common_timing_params_t *common_dimm,
1610 unsigned int cas_latency,
1611 unsigned int additive_latency,
1612 const unsigned int unq_mrs_en)
1614 unsigned short esdmode; /* Extended SDRAM mode */
1615 unsigned short sdmode; /* SDRAM mode */
1618 * FIXME: This ought to be pre-calculated in a
1619 * technology-specific routine,
1620 * e.g. compute_DDR2_mode_register(), and then the
1621 * sdmode and esdmode passed in as part of common_dimm.
1624 /* Extended Mode Register */
1625 unsigned int mrs = 0; /* Mode Register Set */
1626 unsigned int outputs = 0; /* 0=Enabled, 1=Disabled */
1627 unsigned int rdqs_en = 0; /* RDQS Enable: 0=no, 1=yes */
1628 unsigned int dqs_en = 0; /* DQS# Enable: 0=enable, 1=disable */
1629 unsigned int ocd = 0; /* 0x0=OCD not supported,
1630 0x7=OCD default state */
1632 unsigned int al; /* Posted CAS# additive latency (AL) */
1633 unsigned int ods = 0; /* Output Drive Strength:
1634 0 = Full strength (18ohm)
1635 1 = Reduced strength (4ohm) */
1636 unsigned int dll_en = 0; /* DLL Enable 0=Enable (Normal),
1637 1=Disable (Test/Debug) */
1639 /* Mode Register (MR) */
1640 unsigned int mr; /* Mode Register Definition */
1641 unsigned int pd; /* Power-Down Mode */
1642 unsigned int wr; /* Write Recovery */
1643 unsigned int dll_res; /* DLL Reset */
1644 unsigned int mode; /* Normal=0 or Test=1 */
1645 unsigned int caslat = 0;/* CAS# latency */
1646 /* BT: Burst Type (0=Sequential, 1=Interleaved) */
1648 unsigned int bl; /* BL: Burst Length */
1650 dqs_en = !popts->dqs_config;
1651 rtt = fsl_ddr_get_rtt();
1653 al = additive_latency;
1656 | ((mrs & 0x3) << 14)
1657 | ((outputs & 0x1) << 12)
1658 | ((rdqs_en & 0x1) << 11)
1659 | ((dqs_en & 0x1) << 10)
1660 | ((ocd & 0x7) << 7)
1661 | ((rtt & 0x2) << 5) /* rtt field is split */
1663 | ((rtt & 0x1) << 2) /* rtt field is split */
1664 | ((ods & 0x1) << 1)
1665 | ((dll_en & 0x1) << 0)
1668 mr = 0; /* FIXME: CHECKME */
1671 * 0 = Fast Exit (Normal)
1672 * 1 = Slow Exit (Low Power)
1676 #if defined(CONFIG_SYS_FSL_DDR1)
1677 wr = 0; /* Historical */
1678 #elif defined(CONFIG_SYS_FSL_DDR2)
1679 wr = picos_to_mclk(ctrl_num, common_dimm->twr_ps);
1684 #if defined(CONFIG_SYS_FSL_DDR1)
1685 if (1 <= cas_latency && cas_latency <= 4) {
1686 unsigned char mode_caslat_table[4] = {
1687 0x5, /* 1.5 clocks */
1688 0x2, /* 2.0 clocks */
1689 0x6, /* 2.5 clocks */
1690 0x3 /* 3.0 clocks */
1692 caslat = mode_caslat_table[cas_latency - 1];
1694 printf("Warning: unknown cas_latency %d\n", cas_latency);
1696 #elif defined(CONFIG_SYS_FSL_DDR2)
1697 caslat = cas_latency;
1701 switch (popts->burst_length) {
1709 printf("Error: invalid burst length of %u specified. "
1710 " Defaulting to 4 beats.\n",
1711 popts->burst_length);
1717 | ((mr & 0x3) << 14)
1718 | ((pd & 0x1) << 12)
1720 | ((dll_res & 0x1) << 8)
1721 | ((mode & 0x1) << 7)
1722 | ((caslat & 0x7) << 4)
1727 ddr->ddr_sdram_mode = (0
1728 | ((esdmode & 0xFFFF) << 16)
1729 | ((sdmode & 0xFFFF) << 0)
1731 debug("FSLDDR: ddr_sdram_mode = 0x%08x\n", ddr->ddr_sdram_mode);
1735 /* DDR SDRAM Data Initialization (DDR_DATA_INIT) */
1736 static void set_ddr_data_init(fsl_ddr_cfg_regs_t *ddr)
1738 unsigned int init_value; /* Initialization value */
1740 #ifdef CONFIG_MEM_INIT_VALUE
1741 init_value = CONFIG_MEM_INIT_VALUE;
1743 init_value = 0xDEADBEEF;
1745 ddr->ddr_data_init = init_value;
1749 * DDR SDRAM Clock Control (DDR_SDRAM_CLK_CNTL)
1750 * The old controller on the 8540/60 doesn't have this register.
1751 * Hope it's OK to set it (to 0) anyway.
1753 static void set_ddr_sdram_clk_cntl(fsl_ddr_cfg_regs_t *ddr,
1754 const memctl_options_t *popts)
1756 unsigned int clk_adjust; /* Clock adjust */
1757 unsigned int ss_en = 0; /* Source synchronous enable */
1759 #if defined(CONFIG_MPC8541) || defined(CONFIG_MPC8555)
1760 /* Per FSL Application Note: AN2805 */
1763 clk_adjust = popts->clk_adjust;
1764 ddr->ddr_sdram_clk_cntl = (0
1765 | ((ss_en & 0x1) << 31)
1766 | ((clk_adjust & 0xF) << 23)
1768 debug("FSLDDR: clk_cntl = 0x%08x\n", ddr->ddr_sdram_clk_cntl);
1771 /* DDR Initialization Address (DDR_INIT_ADDR) */
1772 static void set_ddr_init_addr(fsl_ddr_cfg_regs_t *ddr)
1774 unsigned int init_addr = 0; /* Initialization address */
1776 ddr->ddr_init_addr = init_addr;
1779 /* DDR Initialization Address (DDR_INIT_EXT_ADDR) */
1780 static void set_ddr_init_ext_addr(fsl_ddr_cfg_regs_t *ddr)
1782 unsigned int uia = 0; /* Use initialization address */
1783 unsigned int init_ext_addr = 0; /* Initialization address */
1785 ddr->ddr_init_ext_addr = (0
1786 | ((uia & 0x1) << 31)
1787 | (init_ext_addr & 0xF)
1791 /* DDR SDRAM Timing Configuration 4 (TIMING_CFG_4) */
1792 static void set_timing_cfg_4(fsl_ddr_cfg_regs_t *ddr,
1793 const memctl_options_t *popts)
1795 unsigned int rwt = 0; /* Read-to-write turnaround for same CS */
1796 unsigned int wrt = 0; /* Write-to-read turnaround for same CS */
1797 unsigned int rrt = 0; /* Read-to-read turnaround for same CS */
1798 unsigned int wwt = 0; /* Write-to-write turnaround for same CS */
1799 unsigned int dll_lock = 0; /* DDR SDRAM DLL Lock Time */
1801 #if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
1802 if (popts->burst_length == DDR_BL8) {
1803 /* We set BL/2 for fixed BL8 */
1804 rrt = 0; /* BL/2 clocks */
1805 wwt = 0; /* BL/2 clocks */
1807 /* We need to set BL/2 + 2 to BC4 and OTF */
1808 rrt = 2; /* BL/2 + 2 clocks */
1809 wwt = 2; /* BL/2 + 2 clocks */
1813 #ifdef CONFIG_SYS_FSL_DDR4
1814 dll_lock = 2; /* tDLLK = 1024 clocks */
1815 #elif defined(CONFIG_SYS_FSL_DDR3)
1816 dll_lock = 1; /* tDLLK = 512 clocks from spec */
1818 ddr->timing_cfg_4 = (0
1819 | ((rwt & 0xf) << 28)
1820 | ((wrt & 0xf) << 24)
1821 | ((rrt & 0xf) << 20)
1822 | ((wwt & 0xf) << 16)
1825 debug("FSLDDR: timing_cfg_4 = 0x%08x\n", ddr->timing_cfg_4);
1828 /* DDR SDRAM Timing Configuration 5 (TIMING_CFG_5) */
1829 static void set_timing_cfg_5(fsl_ddr_cfg_regs_t *ddr, unsigned int cas_latency)
1831 unsigned int rodt_on = 0; /* Read to ODT on */
1832 unsigned int rodt_off = 0; /* Read to ODT off */
1833 unsigned int wodt_on = 0; /* Write to ODT on */
1834 unsigned int wodt_off = 0; /* Write to ODT off */
1836 #if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
1837 unsigned int wr_lat = ((ddr->timing_cfg_2 & 0x00780000) >> 19) +
1838 ((ddr->timing_cfg_2 & 0x00040000) >> 14);
1839 /* rodt_on = timing_cfg_1[caslat] - timing_cfg_2[wrlat] + 1 */
1840 if (cas_latency >= wr_lat)
1841 rodt_on = cas_latency - wr_lat + 1;
1842 rodt_off = 4; /* 4 clocks */
1843 wodt_on = 1; /* 1 clocks */
1844 wodt_off = 4; /* 4 clocks */
1847 ddr->timing_cfg_5 = (0
1848 | ((rodt_on & 0x1f) << 24)
1849 | ((rodt_off & 0x7) << 20)
1850 | ((wodt_on & 0x1f) << 12)
1851 | ((wodt_off & 0x7) << 8)
1853 debug("FSLDDR: timing_cfg_5 = 0x%08x\n", ddr->timing_cfg_5);
1856 #ifdef CONFIG_SYS_FSL_DDR4
1857 static void set_timing_cfg_6(fsl_ddr_cfg_regs_t *ddr)
1859 unsigned int hs_caslat = 0;
1860 unsigned int hs_wrlat = 0;
1861 unsigned int hs_wrrec = 0;
1862 unsigned int hs_clkadj = 0;
1863 unsigned int hs_wrlvl_start = 0;
1865 ddr->timing_cfg_6 = (0
1866 | ((hs_caslat & 0x1f) << 24)
1867 | ((hs_wrlat & 0x1f) << 19)
1868 | ((hs_wrrec & 0x1f) << 12)
1869 | ((hs_clkadj & 0x1f) << 6)
1870 | ((hs_wrlvl_start & 0x1f) << 0)
1872 debug("FSLDDR: timing_cfg_6 = 0x%08x\n", ddr->timing_cfg_6);
1875 static void set_timing_cfg_7(const unsigned int ctrl_num,
1876 fsl_ddr_cfg_regs_t *ddr,
1877 const common_timing_params_t *common_dimm)
1879 unsigned int txpr, tcksre, tcksrx;
1880 unsigned int cke_rst, cksre, cksrx, par_lat, cs_to_cmd;
1882 txpr = max(5U, picos_to_mclk(ctrl_num, common_dimm->trfc1_ps + 10000));
1883 tcksre = max(5U, picos_to_mclk(ctrl_num, 10000));
1884 tcksrx = max(5U, picos_to_mclk(ctrl_num, 10000));
1890 else if (txpr <= 256)
1892 else if (txpr <= 512)
1907 ddr->timing_cfg_7 = (0
1908 | ((cke_rst & 0x3) << 28)
1909 | ((cksre & 0xf) << 24)
1910 | ((cksrx & 0xf) << 20)
1911 | ((par_lat & 0xf) << 16)
1912 | ((cs_to_cmd & 0xf) << 4)
1914 debug("FSLDDR: timing_cfg_7 = 0x%08x\n", ddr->timing_cfg_7);
1917 static void set_timing_cfg_8(const unsigned int ctrl_num,
1918 fsl_ddr_cfg_regs_t *ddr,
1919 const memctl_options_t *popts,
1920 const common_timing_params_t *common_dimm,
1921 unsigned int cas_latency)
1923 unsigned int rwt_bg, wrt_bg, rrt_bg, wwt_bg;
1924 unsigned int acttoact_bg, wrtord_bg, pre_all_rec;
1925 unsigned int tccdl = picos_to_mclk(ctrl_num, common_dimm->tccdl_ps);
1926 unsigned int wr_lat = ((ddr->timing_cfg_2 & 0x00780000) >> 19) +
1927 ((ddr->timing_cfg_2 & 0x00040000) >> 14);
1929 rwt_bg = cas_latency + 2 + 4 - wr_lat;
1931 rwt_bg = tccdl - rwt_bg;
1935 wrt_bg = wr_lat + 4 + 1 - cas_latency;
1937 wrt_bg = tccdl - wrt_bg;
1941 if (popts->burst_length == DDR_BL8) {
1949 acttoact_bg = picos_to_mclk(ctrl_num, common_dimm->trrdl_ps);
1950 wrtord_bg = max(4U, picos_to_mclk(ctrl_num, 7500));
1951 if (popts->otf_burst_chop_en)
1956 ddr->timing_cfg_8 = (0
1957 | ((rwt_bg & 0xf) << 28)
1958 | ((wrt_bg & 0xf) << 24)
1959 | ((rrt_bg & 0xf) << 20)
1960 | ((wwt_bg & 0xf) << 16)
1961 | ((acttoact_bg & 0xf) << 12)
1962 | ((wrtord_bg & 0xf) << 8)
1963 | ((pre_all_rec & 0x1f) << 0)
1966 debug("FSLDDR: timing_cfg_8 = 0x%08x\n", ddr->timing_cfg_8);
1969 static void set_timing_cfg_9(fsl_ddr_cfg_regs_t *ddr)
1971 ddr->timing_cfg_9 = 0;
1972 debug("FSLDDR: timing_cfg_9 = 0x%08x\n", ddr->timing_cfg_9);
1975 /* This function needs to be called after set_ddr_sdram_cfg() is called */
1976 static void set_ddr_dq_mapping(fsl_ddr_cfg_regs_t *ddr,
1977 const dimm_params_t *dimm_params)
1979 unsigned int acc_ecc_en = (ddr->ddr_sdram_cfg >> 2) & 0x1;
1981 ddr->dq_map_0 = ((dimm_params->dq_mapping[0] & 0x3F) << 26) |
1982 ((dimm_params->dq_mapping[1] & 0x3F) << 20) |
1983 ((dimm_params->dq_mapping[2] & 0x3F) << 14) |
1984 ((dimm_params->dq_mapping[3] & 0x3F) << 8) |
1985 ((dimm_params->dq_mapping[4] & 0x3F) << 2);
1987 ddr->dq_map_1 = ((dimm_params->dq_mapping[5] & 0x3F) << 26) |
1988 ((dimm_params->dq_mapping[6] & 0x3F) << 20) |
1989 ((dimm_params->dq_mapping[7] & 0x3F) << 14) |
1990 ((dimm_params->dq_mapping[10] & 0x3F) << 8) |
1991 ((dimm_params->dq_mapping[11] & 0x3F) << 2);
1993 ddr->dq_map_2 = ((dimm_params->dq_mapping[12] & 0x3F) << 26) |
1994 ((dimm_params->dq_mapping[13] & 0x3F) << 20) |
1995 ((dimm_params->dq_mapping[14] & 0x3F) << 14) |
1996 ((dimm_params->dq_mapping[15] & 0x3F) << 8) |
1997 ((dimm_params->dq_mapping[16] & 0x3F) << 2);
1999 /* dq_map for ECC[4:7] is set to 0 if accumulated ECC is enabled */
2000 ddr->dq_map_3 = ((dimm_params->dq_mapping[17] & 0x3F) << 26) |
2001 ((dimm_params->dq_mapping[8] & 0x3F) << 20) |
2003 (dimm_params->dq_mapping[9] & 0x3F) << 14) |
2004 dimm_params->dq_mapping_ors;
2006 debug("FSLDDR: dq_map_0 = 0x%08x\n", ddr->dq_map_0);
2007 debug("FSLDDR: dq_map_1 = 0x%08x\n", ddr->dq_map_1);
2008 debug("FSLDDR: dq_map_2 = 0x%08x\n", ddr->dq_map_2);
2009 debug("FSLDDR: dq_map_3 = 0x%08x\n", ddr->dq_map_3);
2011 static void set_ddr_sdram_cfg_3(fsl_ddr_cfg_regs_t *ddr,
2012 const memctl_options_t *popts)
2016 rd_pre = popts->quad_rank_present ? 1 : 0;
2018 ddr->ddr_sdram_cfg_3 = (rd_pre & 0x1) << 16;
2020 debug("FSLDDR: ddr_sdram_cfg_3 = 0x%08x\n", ddr->ddr_sdram_cfg_3);
2022 #endif /* CONFIG_SYS_FSL_DDR4 */
2024 /* DDR ZQ Calibration Control (DDR_ZQ_CNTL) */
2025 static void set_ddr_zq_cntl(fsl_ddr_cfg_regs_t *ddr, unsigned int zq_en)
2027 unsigned int zqinit = 0;/* POR ZQ Calibration Time (tZQinit) */
2028 /* Normal Operation Full Calibration Time (tZQoper) */
2029 unsigned int zqoper = 0;
2030 /* Normal Operation Short Calibration Time (tZQCS) */
2031 unsigned int zqcs = 0;
2032 #ifdef CONFIG_SYS_FSL_DDR4
2033 unsigned int zqcs_init;
2037 #ifdef CONFIG_SYS_FSL_DDR4
2038 zqinit = 10; /* 1024 clocks */
2039 zqoper = 9; /* 512 clocks */
2040 zqcs = 7; /* 128 clocks */
2041 zqcs_init = 5; /* 1024 refresh sequences */
2043 zqinit = 9; /* 512 clocks */
2044 zqoper = 8; /* 256 clocks */
2045 zqcs = 6; /* 64 clocks */
2049 ddr->ddr_zq_cntl = (0
2050 | ((zq_en & 0x1) << 31)
2051 | ((zqinit & 0xF) << 24)
2052 | ((zqoper & 0xF) << 16)
2053 | ((zqcs & 0xF) << 8)
2054 #ifdef CONFIG_SYS_FSL_DDR4
2055 | ((zqcs_init & 0xF) << 0)
2058 debug("FSLDDR: zq_cntl = 0x%08x\n", ddr->ddr_zq_cntl);
2061 /* DDR Write Leveling Control (DDR_WRLVL_CNTL) */
2062 static void set_ddr_wrlvl_cntl(fsl_ddr_cfg_regs_t *ddr, unsigned int wrlvl_en,
2063 const memctl_options_t *popts)
2066 * First DQS pulse rising edge after margining mode
2067 * is programmed (tWL_MRD)
2069 unsigned int wrlvl_mrd = 0;
2070 /* ODT delay after margining mode is programmed (tWL_ODTEN) */
2071 unsigned int wrlvl_odten = 0;
2072 /* DQS/DQS_ delay after margining mode is programmed (tWL_DQSEN) */
2073 unsigned int wrlvl_dqsen = 0;
2074 /* WRLVL_SMPL: Write leveling sample time */
2075 unsigned int wrlvl_smpl = 0;
2076 /* WRLVL_WLR: Write leveling repeition time */
2077 unsigned int wrlvl_wlr = 0;
2078 /* WRLVL_START: Write leveling start time */
2079 unsigned int wrlvl_start = 0;
2081 /* suggest enable write leveling for DDR3 due to fly-by topology */
2083 /* tWL_MRD min = 40 nCK, we set it 64 */
2087 /* tWL_DQSEN min = 25 nCK, we set it 32 */
2090 * Write leveling sample time at least need 6 clocks
2091 * higher than tWLO to allow enough time for progagation
2092 * delay and sampling the prime data bits.
2096 * Write leveling repetition time
2097 * at least tWLO + 6 clocks clocks
2102 * Write leveling start time
2103 * The value use for the DQS_ADJUST for the first sample
2104 * when write leveling is enabled. It probably needs to be
2105 * overriden per platform.
2109 * Override the write leveling sample and start time
2110 * according to specific board
2112 if (popts->wrlvl_override) {
2113 wrlvl_smpl = popts->wrlvl_sample;
2114 wrlvl_start = popts->wrlvl_start;
2118 ddr->ddr_wrlvl_cntl = (0
2119 | ((wrlvl_en & 0x1) << 31)
2120 | ((wrlvl_mrd & 0x7) << 24)
2121 | ((wrlvl_odten & 0x7) << 20)
2122 | ((wrlvl_dqsen & 0x7) << 16)
2123 | ((wrlvl_smpl & 0xf) << 12)
2124 | ((wrlvl_wlr & 0x7) << 8)
2125 | ((wrlvl_start & 0x1F) << 0)
2127 debug("FSLDDR: wrlvl_cntl = 0x%08x\n", ddr->ddr_wrlvl_cntl);
2128 ddr->ddr_wrlvl_cntl_2 = popts->wrlvl_ctl_2;
2129 debug("FSLDDR: wrlvl_cntl_2 = 0x%08x\n", ddr->ddr_wrlvl_cntl_2);
2130 ddr->ddr_wrlvl_cntl_3 = popts->wrlvl_ctl_3;
2131 debug("FSLDDR: wrlvl_cntl_3 = 0x%08x\n", ddr->ddr_wrlvl_cntl_3);
2135 /* DDR Self Refresh Counter (DDR_SR_CNTR) */
2136 static void set_ddr_sr_cntr(fsl_ddr_cfg_regs_t *ddr, unsigned int sr_it)
2138 /* Self Refresh Idle Threshold */
2139 ddr->ddr_sr_cntr = (sr_it & 0xF) << 16;
2142 static void set_ddr_eor(fsl_ddr_cfg_regs_t *ddr, const memctl_options_t *popts)
2144 if (popts->addr_hash) {
2145 ddr->ddr_eor = 0x40000000; /* address hash enable */
2146 puts("Address hashing enabled.\n");
2150 static void set_ddr_cdr1(fsl_ddr_cfg_regs_t *ddr, const memctl_options_t *popts)
2152 ddr->ddr_cdr1 = popts->ddr_cdr1;
2153 debug("FSLDDR: ddr_cdr1 = 0x%08x\n", ddr->ddr_cdr1);
2156 static void set_ddr_cdr2(fsl_ddr_cfg_regs_t *ddr, const memctl_options_t *popts)
2158 ddr->ddr_cdr2 = popts->ddr_cdr2;
2159 debug("FSLDDR: ddr_cdr2 = 0x%08x\n", ddr->ddr_cdr2);
2163 check_fsl_memctl_config_regs(const fsl_ddr_cfg_regs_t *ddr)
2165 unsigned int res = 0;
2168 * Check that DDR_SDRAM_CFG[RD_EN] and DDR_SDRAM_CFG[2T_EN] are
2169 * not set at the same time.
2171 if (ddr->ddr_sdram_cfg & 0x10000000
2172 && ddr->ddr_sdram_cfg & 0x00008000) {
2173 printf("Error: DDR_SDRAM_CFG[RD_EN] and DDR_SDRAM_CFG[2T_EN] "
2174 " should not be set at the same time.\n");
2182 compute_fsl_memctl_config_regs(const unsigned int ctrl_num,
2183 const memctl_options_t *popts,
2184 fsl_ddr_cfg_regs_t *ddr,
2185 const common_timing_params_t *common_dimm,
2186 const dimm_params_t *dimm_params,
2187 unsigned int dbw_cap_adj,
2188 unsigned int size_only)
2191 unsigned int cas_latency;
2192 unsigned int additive_latency;
2195 unsigned int wrlvl_en;
2196 unsigned int ip_rev = 0;
2197 unsigned int unq_mrs_en = 0;
2200 memset(ddr, 0, sizeof(fsl_ddr_cfg_regs_t));
2202 if (common_dimm == NULL) {
2203 printf("Error: subset DIMM params struct null pointer\n");
2208 * Process overrides first.
2210 * FIXME: somehow add dereated caslat to this
2212 cas_latency = (popts->cas_latency_override)
2213 ? popts->cas_latency_override_value
2214 : common_dimm->lowest_common_spd_caslat;
2216 additive_latency = (popts->additive_latency_override)
2217 ? popts->additive_latency_override_value
2218 : common_dimm->additive_latency;
2220 sr_it = (popts->auto_self_refresh_en)
2223 /* ZQ calibration */
2224 zq_en = (popts->zq_en) ? 1 : 0;
2225 /* write leveling */
2226 wrlvl_en = (popts->wrlvl_en) ? 1 : 0;
2228 /* Chip Select Memory Bounds (CSn_BNDS) */
2229 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
2230 unsigned long long ea, sa;
2231 unsigned int cs_per_dimm
2232 = CONFIG_CHIP_SELECTS_PER_CTRL / CONFIG_DIMM_SLOTS_PER_CTLR;
2233 unsigned int dimm_number
2235 unsigned long long rank_density
2236 = dimm_params[dimm_number].rank_density >> dbw_cap_adj;
2238 if (dimm_params[dimm_number].n_ranks == 0) {
2239 debug("Skipping setup of CS%u "
2240 "because n_ranks on DIMM %u is 0\n", i, dimm_number);
2243 if (popts->memctl_interleaving) {
2244 switch (popts->ba_intlv_ctl & FSL_DDR_CS0_CS1_CS2_CS3) {
2245 case FSL_DDR_CS0_CS1_CS2_CS3:
2247 case FSL_DDR_CS0_CS1:
2248 case FSL_DDR_CS0_CS1_AND_CS2_CS3:
2252 case FSL_DDR_CS2_CS3:
2258 sa = common_dimm->base_address;
2259 ea = sa + common_dimm->total_mem - 1;
2260 } else if (!popts->memctl_interleaving) {
2262 * If memory interleaving between controllers is NOT
2263 * enabled, the starting address for each memory
2264 * controller is distinct. However, because rank
2265 * interleaving is enabled, the starting and ending
2266 * addresses of the total memory on that memory
2267 * controller needs to be programmed into its
2268 * respective CS0_BNDS.
2270 switch (popts->ba_intlv_ctl & FSL_DDR_CS0_CS1_CS2_CS3) {
2271 case FSL_DDR_CS0_CS1_CS2_CS3:
2272 sa = common_dimm->base_address;
2273 ea = sa + common_dimm->total_mem - 1;
2275 case FSL_DDR_CS0_CS1_AND_CS2_CS3:
2276 if ((i >= 2) && (dimm_number == 0)) {
2277 sa = dimm_params[dimm_number].base_address +
2279 ea = sa + 2 * rank_density - 1;
2281 sa = dimm_params[dimm_number].base_address;
2282 ea = sa + 2 * rank_density - 1;
2285 case FSL_DDR_CS0_CS1:
2286 if (dimm_params[dimm_number].n_ranks > (i % cs_per_dimm)) {
2287 sa = dimm_params[dimm_number].base_address;
2288 ea = sa + rank_density - 1;
2290 sa += (i % cs_per_dimm) * rank_density;
2291 ea += (i % cs_per_dimm) * rank_density;
2299 case FSL_DDR_CS2_CS3:
2300 if (dimm_params[dimm_number].n_ranks > (i % cs_per_dimm)) {
2301 sa = dimm_params[dimm_number].base_address;
2302 ea = sa + rank_density - 1;
2304 sa += (i % cs_per_dimm) * rank_density;
2305 ea += (i % cs_per_dimm) * rank_density;
2311 ea += (rank_density >> dbw_cap_adj);
2313 default: /* No bank(chip-select) interleaving */
2314 sa = dimm_params[dimm_number].base_address;
2315 ea = sa + rank_density - 1;
2316 if (dimm_params[dimm_number].n_ranks > (i % cs_per_dimm)) {
2317 sa += (i % cs_per_dimm) * rank_density;
2318 ea += (i % cs_per_dimm) * rank_density;
2331 ddr->cs[i].bnds = (0
2332 | ((sa & 0xffff) << 16) /* starting address */
2333 | ((ea & 0xffff) << 0) /* ending address */
2336 /* setting bnds to 0xffffffff for inactive CS */
2337 ddr->cs[i].bnds = 0xffffffff;
2340 debug("FSLDDR: cs[%d]_bnds = 0x%08x\n", i, ddr->cs[i].bnds);
2341 set_csn_config(dimm_number, i, ddr, popts, dimm_params);
2342 set_csn_config_2(i, ddr);
2346 * In the case we only need to compute the ddr sdram size, we only need
2347 * to set csn registers, so return from here.
2352 set_ddr_eor(ddr, popts);
2354 #if !defined(CONFIG_SYS_FSL_DDR1)
2355 set_timing_cfg_0(ctrl_num, ddr, popts, dimm_params);
2358 set_timing_cfg_3(ctrl_num, ddr, popts, common_dimm, cas_latency,
2360 set_timing_cfg_1(ctrl_num, ddr, popts, common_dimm, cas_latency);
2361 set_timing_cfg_2(ctrl_num, ddr, popts, common_dimm,
2362 cas_latency, additive_latency);
2364 set_ddr_cdr1(ddr, popts);
2365 set_ddr_cdr2(ddr, popts);
2366 set_ddr_sdram_cfg(ddr, popts, common_dimm);
2367 ip_rev = fsl_ddr_get_version(ctrl_num);
2368 if (ip_rev > 0x40400)
2371 if ((ip_rev > 0x40700) && (popts->cswl_override != 0))
2372 ddr->debug[18] = popts->cswl_override;
2374 set_ddr_sdram_cfg_2(ctrl_num, ddr, popts, unq_mrs_en);
2375 set_ddr_sdram_mode(ctrl_num, ddr, popts, common_dimm,
2376 cas_latency, additive_latency, unq_mrs_en);
2377 set_ddr_sdram_mode_2(ctrl_num, ddr, popts, common_dimm, unq_mrs_en);
2378 #ifdef CONFIG_SYS_FSL_DDR4
2379 set_ddr_sdram_mode_9(ddr, popts, common_dimm, unq_mrs_en);
2380 set_ddr_sdram_mode_10(ctrl_num, ddr, popts, common_dimm, unq_mrs_en);
2382 set_ddr_sdram_interval(ctrl_num, ddr, popts, common_dimm);
2383 set_ddr_data_init(ddr);
2384 set_ddr_sdram_clk_cntl(ddr, popts);
2385 set_ddr_init_addr(ddr);
2386 set_ddr_init_ext_addr(ddr);
2387 set_timing_cfg_4(ddr, popts);
2388 set_timing_cfg_5(ddr, cas_latency);
2389 #ifdef CONFIG_SYS_FSL_DDR4
2390 set_ddr_sdram_cfg_3(ddr, popts);
2391 set_timing_cfg_6(ddr);
2392 set_timing_cfg_7(ctrl_num, ddr, common_dimm);
2393 set_timing_cfg_8(ctrl_num, ddr, popts, common_dimm, cas_latency);
2394 set_timing_cfg_9(ddr);
2395 set_ddr_dq_mapping(ddr, dimm_params);
2398 set_ddr_zq_cntl(ddr, zq_en);
2399 set_ddr_wrlvl_cntl(ddr, wrlvl_en, popts);
2401 set_ddr_sr_cntr(ddr, sr_it);
2403 set_ddr_sdram_rcw(ddr, popts, common_dimm);
2405 #ifdef CONFIG_SYS_FSL_DDR_EMU
2406 /* disble DDR training for emulator */
2407 ddr->debug[2] = 0x00000400;
2408 ddr->debug[4] = 0xff800800;
2409 ddr->debug[5] = 0x08000800;
2410 ddr->debug[6] = 0x08000800;
2411 ddr->debug[7] = 0x08000800;
2412 ddr->debug[8] = 0x08000800;
2414 #ifdef CONFIG_SYS_FSL_ERRATUM_A004508
2415 if ((ip_rev >= 0x40000) && (ip_rev < 0x40400))
2416 ddr->debug[2] |= 0x00000200; /* set bit 22 */
2419 return check_fsl_memctl_config_regs(ddr);