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13#ifndef CONFIG_MPC83XX_SDRAM
14
15#include <common.h>
16#include <cpu_func.h>
17#include <log.h>
18#include <time.h>
19#include <vsprintf.h>
20#include <asm/processor.h>
21#include <asm/io.h>
22#include <i2c.h>
23#include <spd.h>
24#include <asm/mmu.h>
25#include <spd_sdram.h>
26#include <asm/bitops.h>
27#include <asm/global_data.h>
28#include <linux/delay.h>
29
30DECLARE_GLOBAL_DATA_PTR;
31
32void board_add_ram_info(int use_default)
33{
34 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
35 volatile ddr83xx_t *ddr = &immap->ddr;
36 char buf[32];
37
38 printf(" (DDR%d", ((ddr->sdram_cfg & SDRAM_CFG_SDRAM_TYPE_MASK)
39 >> SDRAM_CFG_SDRAM_TYPE_SHIFT) - 1);
40
41#if defined(CONFIG_ARCH_MPC8308) || defined(CONFIG_ARCH_MPC831X)
42 if ((ddr->sdram_cfg & SDRAM_CFG_DBW_MASK) == SDRAM_CFG_DBW_16)
43 puts(", 16-bit");
44 else if ((ddr->sdram_cfg & SDRAM_CFG_DBW_MASK) == SDRAM_CFG_DBW_32)
45 puts(", 32-bit");
46 else
47 puts(", unknown width");
48#else
49 if (ddr->sdram_cfg & SDRAM_CFG_32_BE)
50 puts(", 32-bit");
51 else
52 puts(", 64-bit");
53#endif
54
55 if (ddr->sdram_cfg & SDRAM_CFG_ECC_EN)
56 puts(", ECC on");
57 else
58 puts(", ECC off");
59
60 printf(", %s MHz)", strmhz(buf, gd->mem_clk));
61
62#if defined(CONFIG_SYS_LB_SDRAM) && defined(CONFIG_SYS_LBC_SDRAM_SIZE)
63 puts("\nSDRAM: ");
64 print_size (CONFIG_SYS_LBC_SDRAM_SIZE * 1024 * 1024, " (local bus)");
65#endif
66}
67
68#ifdef CONFIG_SPD_EEPROM
69#ifndef CONFIG_SYS_READ_SPD
70#define CONFIG_SYS_READ_SPD i2c_read
71#endif
72#ifndef SPD_EEPROM_OFFSET
73#define SPD_EEPROM_OFFSET 0
74#endif
75#ifndef SPD_EEPROM_ADDR_LEN
76#define SPD_EEPROM_ADDR_LEN 1
77#endif
78
79
80
81
82int
83picos_to_clk(int picos)
84{
85 unsigned int mem_bus_clk;
86 int clks;
87
88 mem_bus_clk = gd->mem_clk >> 1;
89 clks = picos / (1000000000 / (mem_bus_clk / 1000));
90 if (picos % (1000000000 / (mem_bus_clk / 1000)) != 0)
91 clks++;
92
93 return clks;
94}
95
96unsigned int banksize(unsigned char row_dens)
97{
98 return ((row_dens >> 2) | ((row_dens & 3) << 6)) << 24;
99}
100
101int read_spd(uint addr)
102{
103 return ((int) addr);
104}
105
106#undef SPD_DEBUG
107#ifdef SPD_DEBUG
108static void spd_debug(spd_eeprom_t *spd)
109{
110 printf ("\nDIMM type: %-18.18s\n", spd->mpart);
111 printf ("SPD size: %d\n", spd->info_size);
112 printf ("EEPROM size: %d\n", 1 << spd->chip_size);
113 printf ("Memory type: %d\n", spd->mem_type);
114 printf ("Row addr: %d\n", spd->nrow_addr);
115 printf ("Column addr: %d\n", spd->ncol_addr);
116 printf ("# of rows: %d\n", spd->nrows);
117 printf ("Row density: %d\n", spd->row_dens);
118 printf ("# of banks: %d\n", spd->nbanks);
119 printf ("Data width: %d\n",
120 256 * spd->dataw_msb + spd->dataw_lsb);
121 printf ("Chip width: %d\n", spd->primw);
122 printf ("Refresh rate: %02X\n", spd->refresh);
123 printf ("CAS latencies: %02X\n", spd->cas_lat);
124 printf ("Write latencies: %02X\n", spd->write_lat);
125 printf ("tRP: %d\n", spd->trp);
126 printf ("tRCD: %d\n", spd->trcd);
127 printf ("\n");
128}
129#endif
130
131long int spd_sdram()
132{
133 volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
134 volatile ddr83xx_t *ddr = &immap->ddr;
135 volatile law83xx_t *ecm = &immap->sysconf.ddrlaw[0];
136 spd_eeprom_t spd;
137 unsigned int n_ranks;
138 unsigned int odt_rd_cfg, odt_wr_cfg;
139 unsigned char twr_clk, twtr_clk;
140 unsigned int sdram_type;
141 unsigned int memsize;
142 unsigned int law_size;
143 unsigned char caslat, caslat_ctrl;
144 unsigned int trfc, trfc_clk, trfc_low;
145 unsigned int trcd_clk, trtp_clk;
146 unsigned char cke_min_clk;
147 unsigned char add_lat, wr_lat;
148 unsigned char wr_data_delay;
149 unsigned char four_act;
150 unsigned char cpo;
151 unsigned char burstlen;
152 unsigned char odt_cfg, mode_odt_enable;
153 unsigned int max_bus_clk;
154 unsigned int max_data_rate, effective_data_rate;
155 unsigned int ddrc_clk;
156 unsigned int refresh_clk;
157 unsigned int sdram_cfg;
158 unsigned int ddrc_ecc_enable;
159 unsigned int pvr = get_pvr();
160
161
162
163
164
165 clrsetbits_be32(&ddr->sdram_cfg, SDRAM_CFG_MEM_EN, 0);
166 sync();
167 isync();
168
169
170 CONFIG_SYS_READ_SPD(SPD_EEPROM_ADDRESS, SPD_EEPROM_OFFSET,
171 SPD_EEPROM_ADDR_LEN, (uchar *) &spd, sizeof(spd));
172#ifdef SPD_DEBUG
173 spd_debug(&spd);
174#endif
175
176 if (spd.mem_type != SPD_MEMTYPE_DDR && spd.mem_type != SPD_MEMTYPE_DDR2) {
177 debug("DDR: Module mem type is %02X\n", spd.mem_type);
178 return 0;
179 }
180
181
182 if (spd.mem_type == SPD_MEMTYPE_DDR) {
183 n_ranks = spd.nrows;
184 } else {
185 n_ranks = (spd.nrows & 0x7) + 1;
186 }
187
188 if (n_ranks > 2) {
189 printf("DDR: The number of physical bank is %02X\n", n_ranks);
190 return 0;
191 }
192
193
194 if (spd.nrow_addr < 12 || spd.nrow_addr > 15) {
195 printf("DDR: Row number is out of range of DDRC, row=%02X\n",
196 spd.nrow_addr);
197 return 0;
198 }
199
200
201 if (spd.ncol_addr < 8 || spd.ncol_addr > 11) {
202 printf("DDR: Col number is out of range of DDRC, col=%02X\n",
203 spd.ncol_addr);
204 return 0;
205 }
206
207#ifdef CONFIG_SYS_DDRCDR_VALUE
208
209
210
211 if(spd.mem_type == SPD_MEMTYPE_DDR2) {
212 immap->sysconf.ddrcdr = CONFIG_SYS_DDRCDR_VALUE;
213 }
214 udelay(50000);
215#endif
216
217
218
219
220 odt_rd_cfg = 0;
221 odt_wr_cfg = 0;
222 if (spd.mem_type == SPD_MEMTYPE_DDR2) {
223 odt_wr_cfg = 1;
224 }
225
226
227#ifdef CONFIG_SYS_83XX_DDR_USES_CS0
228 ddr->csbnds[0].csbnds = (banksize(spd.row_dens) >> 24) - 1;
229 ddr->cs_config[0] = ( 1 << 31
230 | (odt_rd_cfg << 20)
231 | (odt_wr_cfg << 16)
232 | ((spd.nbanks == 8 ? 1 : 0) << 14)
233 | ((spd.nrow_addr - 12) << 8)
234 | (spd.ncol_addr - 8) );
235 debug("\n");
236 debug("cs0_bnds = 0x%08x\n",ddr->csbnds[0].csbnds);
237 debug("cs0_config = 0x%08x\n",ddr->cs_config[0]);
238
239 if (n_ranks == 2) {
240 ddr->csbnds[1].csbnds = ( (banksize(spd.row_dens) >> 8)
241 | ((banksize(spd.row_dens) >> 23) - 1) );
242 ddr->cs_config[1] = ( 1<<31
243 | (odt_rd_cfg << 20)
244 | (odt_wr_cfg << 16)
245 | ((spd.nbanks == 8 ? 1 : 0) << 14)
246 | ((spd.nrow_addr - 12) << 8)
247 | (spd.ncol_addr - 8) );
248 debug("cs1_bnds = 0x%08x\n",ddr->csbnds[1].csbnds);
249 debug("cs1_config = 0x%08x\n",ddr->cs_config[1]);
250 }
251
252#else
253 ddr->csbnds[2].csbnds = (banksize(spd.row_dens) >> 24) - 1;
254 ddr->cs_config[2] = ( 1 << 31
255 | (odt_rd_cfg << 20)
256 | (odt_wr_cfg << 16)
257 | ((spd.nbanks == 8 ? 1 : 0) << 14)
258 | ((spd.nrow_addr - 12) << 8)
259 | (spd.ncol_addr - 8) );
260 debug("\n");
261 debug("cs2_bnds = 0x%08x\n",ddr->csbnds[2].csbnds);
262 debug("cs2_config = 0x%08x\n",ddr->cs_config[2]);
263
264 if (n_ranks == 2) {
265 ddr->csbnds[3].csbnds = ( (banksize(spd.row_dens) >> 8)
266 | ((banksize(spd.row_dens) >> 23) - 1) );
267 ddr->cs_config[3] = ( 1<<31
268 | (odt_rd_cfg << 20)
269 | (odt_wr_cfg << 16)
270 | ((spd.nbanks == 8 ? 1 : 0) << 14)
271 | ((spd.nrow_addr - 12) << 8)
272 | (spd.ncol_addr - 8) );
273 debug("cs3_bnds = 0x%08x\n",ddr->csbnds[3].csbnds);
274 debug("cs3_config = 0x%08x\n",ddr->cs_config[3]);
275 }
276#endif
277
278
279
280
281 memsize = n_ranks * banksize(spd.row_dens) / 0x100000;
282
283
284
285
286 law_size = 19 + __ilog2(memsize);
287
288
289
290
291 ecm->bar = CONFIG_SYS_SDRAM_BASE & 0xfffff000;
292 ecm->ar = (LAWAR_EN | LAWAR_TRGT_IF_DDR | (LAWAR_SIZE & law_size));
293 debug("DDR:bar=0x%08x\n", ecm->bar);
294 debug("DDR:ar=0x%08x\n", ecm->ar);
295
296
297
298
299
300
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302
303
304
305
306
307
308
309
310
311
312
313
314 caslat = __ilog2(spd.cas_lat);
315 if ((spd.mem_type == SPD_MEMTYPE_DDR)
316 && (caslat > 6)) {
317 printf("DDR I: Invalid SPD CAS Latency: 0x%x.\n", spd.cas_lat);
318 return 0;
319 } else if (spd.mem_type == SPD_MEMTYPE_DDR2
320 && (caslat < 2 || caslat > 5)) {
321 printf("DDR II: Invalid SPD CAS Latency: 0x%x.\n",
322 spd.cas_lat);
323 return 0;
324 }
325 debug("DDR: caslat SPD bit is %d\n", caslat);
326
327 max_bus_clk = 1000 *10 / (((spd.clk_cycle & 0xF0) >> 4) * 10
328 + (spd.clk_cycle & 0x0f));
329 max_data_rate = max_bus_clk * 2;
330
331 debug("DDR:Module maximum data rate is: %d MHz\n", max_data_rate);
332
333 ddrc_clk = gd->mem_clk / 1000000;
334 effective_data_rate = 0;
335
336 if (max_data_rate >= 460) {
337 if (spd.cas_lat & 0x08)
338 caslat = 3;
339 else
340 caslat = 4;
341 if (ddrc_clk <= 460 && ddrc_clk > 350)
342 effective_data_rate = 400;
343 else if (ddrc_clk <=350 && ddrc_clk > 280)
344 effective_data_rate = 333;
345 else if (ddrc_clk <= 280 && ddrc_clk > 230)
346 effective_data_rate = 266;
347 else
348 effective_data_rate = 200;
349 } else if (max_data_rate >= 390 && max_data_rate < 460) {
350 if (ddrc_clk <= 460 && ddrc_clk > 350) {
351
352 effective_data_rate = 400;
353 caslat = caslat;
354 } else if (ddrc_clk <= 350 && ddrc_clk > 280) {
355
356 effective_data_rate = 333;
357 if (spd.clk_cycle2 == 0x60)
358 caslat = caslat - 1;
359 else
360 caslat = caslat;
361 } else if (ddrc_clk <= 280 && ddrc_clk > 230) {
362
363 effective_data_rate = 266;
364 if (spd.clk_cycle3 == 0x75)
365 caslat = caslat - 2;
366 else if (spd.clk_cycle2 == 0x75)
367 caslat = caslat - 1;
368 else
369 caslat = caslat;
370 } else if (ddrc_clk <= 230 && ddrc_clk > 90) {
371
372 effective_data_rate = 200;
373 if (spd.clk_cycle3 == 0xa0)
374 caslat = caslat - 2;
375 else if (spd.clk_cycle2 == 0xa0)
376 caslat = caslat - 1;
377 else
378 caslat = caslat;
379 }
380 } else if (max_data_rate >= 323) {
381 if (ddrc_clk <= 350 && ddrc_clk > 280) {
382
383 effective_data_rate = 333;
384 caslat = caslat;
385 } else if (ddrc_clk <= 280 && ddrc_clk > 230) {
386
387 effective_data_rate = 266;
388 if (spd.clk_cycle2 == 0x75)
389 caslat = caslat - 1;
390 else
391 caslat = caslat;
392 } else if (ddrc_clk <= 230 && ddrc_clk > 90) {
393
394 effective_data_rate = 200;
395 if (spd.clk_cycle3 == 0xa0)
396 caslat = caslat - 2;
397 else if (spd.clk_cycle2 == 0xa0)
398 caslat = caslat - 1;
399 else
400 caslat = caslat;
401 }
402 } else if (max_data_rate >= 256) {
403 if (ddrc_clk <= 350 && ddrc_clk > 280) {
404
405 printf("DDR: DDR controller freq is more than "
406 "max data rate of the module\n");
407 return 0;
408 } else if (ddrc_clk <= 280 && ddrc_clk > 230) {
409
410 effective_data_rate = 266;
411 caslat = caslat;
412 } else if (ddrc_clk <= 230 && ddrc_clk > 90) {
413
414 effective_data_rate = 200;
415 if (spd.clk_cycle2 == 0xa0)
416 caslat = caslat - 1;
417 }
418 } else if (max_data_rate >= 190) {
419 if (ddrc_clk <= 350 && ddrc_clk > 230) {
420
421 printf("DDR: DDR controller freq is more than "
422 "max data rate of the module\n");
423 return 0;
424 } else if (ddrc_clk <= 230 && ddrc_clk > 90) {
425
426 effective_data_rate = 200;
427 caslat = caslat;
428 }
429 }
430
431 debug("DDR:Effective data rate is: %dMHz\n", effective_data_rate);
432 debug("DDR:The MSB 1 of CAS Latency is: %d\n", caslat);
433
434
435
436
437
438 if(PVR_MAJ(pvr) <= 1 && spd.mem_type == SPD_MEMTYPE_DDR){
439 if (caslat == 2)
440 ddr->debug_reg = 0x201c0000;
441 else if (caslat == 3)
442 ddr->debug_reg = 0x202c0000;
443 else if (caslat == 4)
444 ddr->debug_reg = 0x202c0000;
445
446 sync();
447
448 debug("Errata DDR6 (debug_reg=0x%08x)\n", ddr->debug_reg);
449 }
450
451
452
453
454
455 if (spd.mem_type == SPD_MEMTYPE_DDR) {
456 caslat_ctrl = (caslat + 1) & 0x07;
457 } else {
458 caslat_ctrl = (2 * caslat - 1) & 0x0f;
459 }
460
461 debug("DDR: effective data rate is %d MHz\n", effective_data_rate);
462 debug("DDR: caslat SPD bit is %d, controller field is 0x%x\n",
463 caslat, caslat_ctrl);
464
465
466
467
468
469 if (spd.mem_type == SPD_MEMTYPE_DDR2) {
470 unsigned char taxpd_clk = 8;
471 unsigned char tmrd_clk = 2;
472 unsigned char act_pd_exit = 2;
473 unsigned char pre_pd_exit = 6;
474
475 ddr->timing_cfg_0 = (0
476 | ((act_pd_exit & 0x7) << 20)
477 | ((pre_pd_exit & 0x7) << 16)
478 | ((taxpd_clk & 0xf) << 8)
479 | ((tmrd_clk & 0xf) << 0)
480 );
481 debug("DDR: timing_cfg_0 = 0x%08x\n", ddr->timing_cfg_0);
482 }
483
484
485
486
487
488
489
490 if (spd.mem_type == SPD_MEMTYPE_DDR) {
491 twr_clk = 3;
492 twtr_clk = 1;
493 } else {
494 twr_clk = picos_to_clk(spd.twr * 250);
495 twtr_clk = picos_to_clk(spd.twtr * 250);
496 if (twtr_clk < 2)
497 twtr_clk = 2;
498 }
499
500
501
502
503
504
505 if (spd.mem_type == SPD_MEMTYPE_DDR) {
506 trfc = spd.trfc * 1000;
507 } else {
508 unsigned int byte40_table_ps[8] = {
509 0,
510 250,
511 330,
512 500,
513 660,
514 750,
515 0,
516 0
517 };
518
519 trfc = (((spd.trctrfc_ext & 0x1) * 256) + spd.trfc) * 1000
520 + byte40_table_ps[(spd.trctrfc_ext >> 1) & 0x7];
521 }
522 trfc_clk = picos_to_clk(trfc);
523
524
525
526
527 trcd_clk = picos_to_clk(spd.trcd * 250) & 0x7;
528
529
530
531
532
533
534
535
536 trfc_low = (trfc_clk - 8) & 0xf;
537
538 ddr->timing_cfg_1 =
539 (((picos_to_clk(spd.trp * 250) & 0x07) << 28 ) |
540 ((picos_to_clk(spd.tras * 1000) & 0x0f ) << 24 ) |
541 (trcd_clk << 20 ) |
542 (caslat_ctrl << 16 ) |
543 (trfc_low << 12 ) |
544 ((twr_clk & 0x07) << 8) |
545 ((picos_to_clk(spd.trrd * 250) & 0x07) << 4) |
546 ((twtr_clk & 0x07) << 0)
547 );
548
549
550
551
552
553
554
555
556 add_lat = 0;
557 if (spd.mem_type == SPD_MEMTYPE_DDR2
558 && (odt_wr_cfg || odt_rd_cfg)
559 && (caslat < 4)) {
560 add_lat = 4 - caslat;
561 if ((add_lat + caslat) < 4) {
562 add_lat = 0;
563 }
564 }
565
566
567
568
569
570
571 wr_data_delay = 2;
572#ifdef CONFIG_SYS_DDR_WRITE_DATA_DELAY
573 wr_data_delay = CONFIG_SYS_DDR_WRITE_DATA_DELAY;
574#endif
575
576
577
578
579
580
581
582 if (spd.mem_type == SPD_MEMTYPE_DDR) {
583
584
585
586
587
588
589 wr_lat = 0;
590
591 trtp_clk = 2;
592 cke_min_clk = 1;
593 four_act = 1;
594
595 } else {
596 wr_lat = caslat - 1;
597
598
599 trtp_clk = picos_to_clk(spd.trtp * 250);
600 if (trtp_clk < 2)
601 trtp_clk = 2;
602 trtp_clk += add_lat;
603
604 cke_min_clk = 3;
605 four_act = picos_to_clk(37500);
606 }
607
608
609
610
611
612 cpo = 0;
613 if (spd.mem_type == SPD_MEMTYPE_DDR2) {
614#ifdef CONFIG_SYS_DDR_CPO
615 cpo = CONFIG_SYS_DDR_CPO;
616#else
617 if (effective_data_rate == 266) {
618 cpo = 0x4;
619 } else if (effective_data_rate == 333) {
620 cpo = 0x6;
621 } else if (effective_data_rate == 400) {
622 cpo = 0x7;
623 } else {
624
625 cpo = 0x1f;
626 }
627#endif
628 }
629
630 ddr->timing_cfg_2 = (0
631 | ((add_lat & 0x7) << 28)
632 | ((cpo & 0x1f) << 23)
633 | ((wr_lat & 0x7) << 19)
634 | ((trtp_clk & 0x7) << 13)
635 | ((wr_data_delay & 0x7) << 10)
636 | ((cke_min_clk & 0x7) << 6)
637 | ((four_act & 0x1f) << 0)
638 );
639
640 debug("DDR:timing_cfg_1=0x%08x\n", ddr->timing_cfg_1);
641 debug("DDR:timing_cfg_2=0x%08x\n", ddr->timing_cfg_2);
642
643
644 if (spd.dataw_lsb < 64) {
645 if (spd.mem_type == SPD_MEMTYPE_DDR)
646 burstlen = 0x03;
647 else
648 burstlen = 0x02;
649 debug("\n DDR DIMM: data bus width is 32 bit");
650 } else {
651 burstlen = 0x02;
652 debug("\n DDR DIMM: data bus width is 64 bit");
653 }
654
655
656 if (spd.config == 0x02)
657 debug(" with ECC\n");
658 else
659 debug(" without ECC\n");
660
661
662
663
664 if (spd.mem_type == SPD_MEMTYPE_DDR) {
665 switch (caslat) {
666 case 1:
667 ddr->sdram_mode = 0x50 | burstlen;
668 break;
669 case 2:
670 ddr->sdram_mode = 0x20 | burstlen;
671 break;
672 case 3:
673 ddr->sdram_mode = 0x60 | burstlen;
674 break;
675 case 4:
676 ddr->sdram_mode = 0x30 | burstlen;
677 break;
678 default:
679 printf("DDR:only CL 1.5, 2.0, 2.5, 3.0 is supported\n");
680 return 0;
681 }
682 } else {
683 mode_odt_enable = 0x0;
684 if (odt_wr_cfg || odt_rd_cfg) {
685
686
687
688
689
690 mode_odt_enable = 0x40;
691 }
692
693 ddr->sdram_mode =
694 (0
695 | (1 << (16 + 10))
696#ifdef CONFIG_SYS_DDR_MODE_WEAK
697 | (1 << (16 + 1))
698#endif
699 | (add_lat << (16 + 3))
700 | (mode_odt_enable << 16)
701 | ((twr_clk - 1) << 9)
702 | (caslat << 4)
703 | (burstlen << 0)
704 );
705 }
706 debug("DDR:sdram_mode=0x%08x\n", ddr->sdram_mode);
707
708
709
710
711 ddr->sdram_mode2 = 0;
712 debug("DDR: sdram_mode2 = 0x%08x\n", ddr->sdram_mode2);
713
714 switch (spd.refresh) {
715 case 0x00:
716 case 0x80:
717 refresh_clk = picos_to_clk(15625000);
718 break;
719 case 0x01:
720 case 0x81:
721 refresh_clk = picos_to_clk(3900000);
722 break;
723 case 0x02:
724 case 0x82:
725 refresh_clk = picos_to_clk(7800000);
726 break;
727 case 0x03:
728 case 0x83:
729 refresh_clk = picos_to_clk(31300000);
730 break;
731 case 0x04:
732 case 0x84:
733 refresh_clk = picos_to_clk(62500000);
734 break;
735 case 0x05:
736 case 0x85:
737 refresh_clk = picos_to_clk(125000000);
738 break;
739 default:
740 refresh_clk = 0x512;
741 break;
742 }
743
744
745
746
747
748 ddr->sdram_interval = ((refresh_clk & 0x3fff) << 16) | 0x100;
749 debug("DDR:sdram_interval=0x%08x\n", ddr->sdram_interval);
750
751
752
753
754 odt_cfg = 0;
755#ifndef CONFIG_NEVER_ASSERT_ODT_TO_CPU
756 if (odt_rd_cfg | odt_wr_cfg) {
757 odt_cfg = 0x2;
758 }
759#endif
760 if (spd.mem_type == SPD_MEMTYPE_DDR2) {
761 ddr->sdram_cfg2 = (0
762 | (0 << 26)
763 | (odt_cfg << 21)
764 | (1 << 12)
765 );
766
767 debug("DDR: sdram_cfg2 = 0x%08x\n", ddr->sdram_cfg2);
768 }
769
770#ifdef CONFIG_SYS_DDR_SDRAM_CLK_CNTL
771 ddr->sdram_clk_cntl = CONFIG_SYS_DDR_SDRAM_CLK_CNTL;
772#endif
773 debug("DDR:sdram_clk_cntl=0x%08x\n", ddr->sdram_clk_cntl);
774
775 sync();
776 isync();
777
778 udelay(600);
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794 if (spd.mem_type == SPD_MEMTYPE_DDR)
795 sdram_type = SDRAM_CFG_SDRAM_TYPE_DDR1;
796 else
797 sdram_type = SDRAM_CFG_SDRAM_TYPE_DDR2;
798
799 sdram_cfg = (0
800 | SDRAM_CFG_MEM_EN
801 | SDRAM_CFG_SREN
802 | sdram_type
803 );
804
805
806 if (spd.mod_attr & 0x02)
807 sdram_cfg |= SDRAM_CFG_RD_EN;
808
809
810 if (spd.dataw_lsb < 64) {
811 if (spd.mem_type == SPD_MEMTYPE_DDR)
812 sdram_cfg |= SDRAM_CFG_32_BE | SDRAM_CFG_8_BE;
813 if (spd.mem_type == SPD_MEMTYPE_DDR2)
814 sdram_cfg |= SDRAM_CFG_32_BE;
815 }
816
817 ddrc_ecc_enable = 0;
818
819#if defined(CONFIG_DDR_ECC)
820
821 if (spd.config == 0x02) {
822 sdram_cfg |= 0x20000000;
823 ddrc_ecc_enable = 1;
824
825 ddr->err_disable = ~ECC_ERROR_ENABLE;
826
827
828 ddr->err_sbe = (255 << ECC_ERROR_MAN_SBET_SHIFT) |
829 (0 << ECC_ERROR_MAN_SBEC_SHIFT);
830 }
831
832 debug("DDR:err_disable=0x%08x\n", ddr->err_disable);
833 debug("DDR:err_sbe=0x%08x\n", ddr->err_sbe);
834#endif
835 debug(" DDRC ECC mode: %s\n", ddrc_ecc_enable ? "ON":"OFF");
836
837
838 ddr->sdram_cfg = sdram_cfg;
839 sync();
840 isync();
841 udelay(500);
842
843 debug("DDR:sdram_cfg=0x%08x\n", ddr->sdram_cfg);
844 return memsize;
845}
846#endif
847
848#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
849static inline u32 mftbu(void)
850{
851 u32 rval;
852
853 asm volatile("mftbu %0" : "=r" (rval));
854 return rval;
855}
856
857static inline u32 mftb(void)
858{
859 u32 rval;
860
861 asm volatile("mftb %0" : "=r" (rval));
862 return rval;
863}
864
865
866
867
868
869static __inline__ unsigned long get_tbms (void)
870{
871 unsigned long tbl;
872 unsigned long tbu1, tbu2;
873 unsigned long ms;
874 unsigned long long tmp;
875
876 ulong tbclk = get_tbclk();
877
878
879 do {
880 tbu1 = mftbu();
881 tbl = mftb();
882 tbu2 = mftbu();
883 } while (tbu1 != tbu2);
884
885
886 tmp = (unsigned long long)(tbu1);
887 tmp = (tmp << 32);
888 tmp += (unsigned long long)(tbl);
889 ms = tmp/(tbclk/1000);
890
891 return ms;
892}
893
894
895
896
897void ddr_enable_ecc(unsigned int dram_size)
898{
899 volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
900 volatile ddr83xx_t *ddr= &immap->ddr;
901 unsigned long t_start, t_end;
902 register u64 *p;
903 register uint size;
904 unsigned int pattern[2];
905
906 icache_enable();
907 t_start = get_tbms();
908 pattern[0] = 0xdeadbeef;
909 pattern[1] = 0xdeadbeef;
910
911 debug("ddr init: CPU FP write method\n");
912 size = dram_size;
913 for (p = 0; p < (u64*)(size); p++) {
914 ppcDWstore((u32*)p, pattern);
915 }
916 sync();
917
918 t_end = get_tbms();
919 icache_disable();
920
921 debug("\nREADY!!\n");
922 debug("ddr init duration: %ld ms\n", t_end - t_start);
923
924
925 if ((ddr->err_detect & ECC_ERROR_DETECT_MME) == ECC_ERROR_DETECT_MME)
926 ddr->err_detect |= ECC_ERROR_DETECT_MME;
927 if ((ddr->err_detect & ECC_ERROR_DETECT_MBE) == ECC_ERROR_DETECT_MBE)
928 ddr->err_detect |= ECC_ERROR_DETECT_MBE;
929 if ((ddr->err_detect & ECC_ERROR_DETECT_SBE) == ECC_ERROR_DETECT_SBE)
930 ddr->err_detect |= ECC_ERROR_DETECT_SBE;
931 if ((ddr->err_detect & ECC_ERROR_DETECT_MSE) == ECC_ERROR_DETECT_MSE)
932 ddr->err_detect |= ECC_ERROR_DETECT_MSE;
933
934
935 ddr->err_int_en &= ECC_ERR_INT_DISABLE;
936
937
938 ddr->err_disable &= ECC_ERROR_ENABLE;
939
940 sync();
941 isync();
942}
943#endif
944
945#endif
946