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2
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4
5#include <common.h>
6#include <dm.h>
7#include <errno.h>
8#include <div64.h>
9#include <ram.h>
10#include <reset.h>
11#include <watchdog.h>
12#include <asm/arch/fpga_manager.h>
13#include <asm/arch/reset_manager.h>
14#include <asm/arch/sdram.h>
15#include <asm/arch/system_manager.h>
16#include <asm/io.h>
17
18#include "sequencer.h"
19
20#ifdef CONFIG_SPL_BUILD
21
22struct altera_gen5_sdram_priv {
23 struct ram_info info;
24};
25
26struct altera_gen5_sdram_platdata {
27 struct socfpga_sdr *sdr;
28};
29
30struct sdram_prot_rule {
31 u32 sdram_start;
32 u32 sdram_end;
33 u32 rule;
34 int valid;
35
36 u32 security;
37 u32 portmask;
38 u32 result;
39 u32 lo_prot_id;
40 u32 hi_prot_id;
41};
42
43static struct socfpga_system_manager *sysmgr_regs =
44 (struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
45
46static unsigned long sdram_calculate_size(struct socfpga_sdr_ctrl *sdr_ctrl);
47
48
49
50
51
52
53
54
55
56static int get_errata_rows(const struct socfpga_sdram_config *cfg)
57{
58
59#define MEMSIZE_4G (4ULL * 1024ULL * 1024ULL * 1024ULL)
60 const unsigned long long memsize = MEMSIZE_4G;
61 const unsigned int cs =
62 ((cfg->dram_addrw & SDR_CTRLGRP_DRAMADDRW_CSBITS_MASK) >>
63 SDR_CTRLGRP_DRAMADDRW_CSBITS_LSB) + 1;
64 const unsigned int rows =
65 (cfg->dram_addrw & SDR_CTRLGRP_DRAMADDRW_ROWBITS_MASK) >>
66 SDR_CTRLGRP_DRAMADDRW_ROWBITS_LSB;
67 const unsigned int banks =
68 (cfg->dram_addrw & SDR_CTRLGRP_DRAMADDRW_BANKBITS_MASK) >>
69 SDR_CTRLGRP_DRAMADDRW_BANKBITS_LSB;
70 const unsigned int cols =
71 (cfg->dram_addrw & SDR_CTRLGRP_DRAMADDRW_COLBITS_MASK) >>
72 SDR_CTRLGRP_DRAMADDRW_COLBITS_LSB;
73 const unsigned int width = 8;
74
75 unsigned long long newrows;
76 int bits, inewrowslog2;
77
78 debug("workaround rows - memsize %lld\n", memsize);
79 debug("workaround rows - cs %d\n", cs);
80 debug("workaround rows - width %d\n", width);
81 debug("workaround rows - rows %d\n", rows);
82 debug("workaround rows - banks %d\n", banks);
83 debug("workaround rows - cols %d\n", cols);
84
85 newrows = lldiv(memsize, cs * (width / 8));
86 debug("rows workaround - term1 %lld\n", newrows);
87
88 newrows = lldiv(newrows, (1 << banks) * (1 << cols));
89 debug("rows workaround - term2 %lld\n", newrows);
90
91
92
93
94
95
96 bits = generic_hweight32(newrows);
97
98 debug("rows workaround - bits %d\n", bits);
99
100 if (bits != 1) {
101 printf("SDRAM workaround failed, bits set %d\n", bits);
102 return rows;
103 }
104
105 if (newrows > UINT_MAX) {
106 printf("SDRAM workaround rangecheck failed, %lld\n", newrows);
107 return rows;
108 }
109
110 inewrowslog2 = __ilog2(newrows);
111
112 debug("rows workaround - ilog2 %d, %lld\n", inewrowslog2, newrows);
113
114 if (inewrowslog2 == -1) {
115 printf("SDRAM workaround failed, newrows %lld\n", newrows);
116 return rows;
117 }
118
119 return inewrowslog2;
120}
121
122
123static void sdram_set_rule(struct socfpga_sdr_ctrl *sdr_ctrl,
124 struct sdram_prot_rule *prule)
125{
126 u32 lo_addr_bits;
127 u32 hi_addr_bits;
128 int ruleno = prule->rule;
129
130
131 writel(ruleno, &sdr_ctrl->prot_rule_rdwr);
132
133
134 lo_addr_bits = prule->sdram_start >> 20ULL;
135 hi_addr_bits = (prule->sdram_end - 1) >> 20ULL;
136
137 debug("sdram set rule start %x, %d\n", lo_addr_bits,
138 prule->sdram_start);
139 debug("sdram set rule end %x, %d\n", hi_addr_bits,
140 prule->sdram_end);
141
142
143 writel(lo_addr_bits | (hi_addr_bits << 12), &sdr_ctrl->prot_rule_addr);
144
145
146 writel(prule->lo_prot_id | (prule->hi_prot_id << 12),
147 &sdr_ctrl->prot_rule_id);
148
149
150 writel(prule->security | (prule->valid << 2) |
151 (prule->portmask << 3) | (prule->result << 13),
152 &sdr_ctrl->prot_rule_data);
153
154
155 writel(ruleno | (1 << 5), &sdr_ctrl->prot_rule_rdwr);
156
157
158 writel(0, &sdr_ctrl->prot_rule_rdwr);
159}
160
161static void sdram_get_rule(struct socfpga_sdr_ctrl *sdr_ctrl,
162 struct sdram_prot_rule *prule)
163{
164 u32 addr;
165 u32 id;
166 u32 data;
167 int ruleno = prule->rule;
168
169
170 writel(ruleno, &sdr_ctrl->prot_rule_rdwr);
171 writel(ruleno | (1 << 6), &sdr_ctrl->prot_rule_rdwr);
172
173
174 addr = readl(&sdr_ctrl->prot_rule_addr);
175 prule->sdram_start = (addr & 0xFFF) << 20;
176 prule->sdram_end = ((addr >> 12) & 0xFFF) << 20;
177
178
179 id = readl(&sdr_ctrl->prot_rule_id);
180 prule->lo_prot_id = id & 0xFFF;
181 prule->hi_prot_id = (id >> 12) & 0xFFF;
182
183
184 data = readl(&sdr_ctrl->prot_rule_data);
185
186 prule->security = data & 0x3;
187 prule->valid = (data >> 2) & 0x1;
188 prule->portmask = (data >> 3) & 0x3FF;
189 prule->result = (data >> 13) & 0x1;
190}
191
192static void
193sdram_set_protection_config(struct socfpga_sdr_ctrl *sdr_ctrl,
194 const u32 sdram_start, const u32 sdram_end)
195{
196 struct sdram_prot_rule rule;
197 int rules;
198
199
200 writel(0x0, &sdr_ctrl->protport_default);
201
202
203 memset(&rule, 0, sizeof(rule));
204
205 for (rules = 0; rules < 20; rules++) {
206 rule.rule = rules;
207 sdram_set_rule(sdr_ctrl, &rule);
208 }
209
210
211 rule.sdram_start = sdram_start;
212 rule.sdram_end = sdram_end;
213 rule.lo_prot_id = 0x0;
214 rule.hi_prot_id = 0xFFF;
215 rule.portmask = 0x3FF;
216 rule.security = 0x3;
217 rule.result = 0;
218 rule.valid = 1;
219 rule.rule = 0;
220
221
222 sdram_set_rule(sdr_ctrl, &rule);
223
224
225 writel(0x3ff, &sdr_ctrl->protport_default);
226}
227
228static void sdram_dump_protection_config(struct socfpga_sdr_ctrl *sdr_ctrl)
229{
230 struct sdram_prot_rule rule;
231 int rules;
232
233 debug("SDRAM Prot rule, default %x\n",
234 readl(&sdr_ctrl->protport_default));
235
236 for (rules = 0; rules < 20; rules++) {
237 rule.rule = rules;
238 sdram_get_rule(sdr_ctrl, &rule);
239 debug("Rule %d, rules ...\n", rules);
240 debug(" sdram start %x\n", rule.sdram_start);
241 debug(" sdram end %x\n", rule.sdram_end);
242 debug(" low prot id %d, hi prot id %d\n",
243 rule.lo_prot_id,
244 rule.hi_prot_id);
245 debug(" portmask %x\n", rule.portmask);
246 debug(" security %d\n", rule.security);
247 debug(" result %d\n", rule.result);
248 debug(" valid %d\n", rule.valid);
249 }
250}
251
252
253
254
255
256
257
258
259
260static unsigned sdram_write_verify(const u32 *addr, const u32 val)
261{
262 u32 rval;
263
264 debug(" Write - Address 0x%p Data 0x%08x\n", addr, val);
265 writel(val, addr);
266
267 debug(" Read and verify...");
268 rval = readl(addr);
269 if (rval != val) {
270 debug("FAIL - Address 0x%p Expected 0x%08x Data 0x%08x\n",
271 addr, val, rval);
272 return -EINVAL;
273 }
274
275 debug("correct!\n");
276 return 0;
277}
278
279
280
281
282
283
284
285static u32 sdr_get_ctrlcfg(const struct socfpga_sdram_config *cfg)
286{
287 const u32 csbits =
288 ((cfg->dram_addrw & SDR_CTRLGRP_DRAMADDRW_CSBITS_MASK) >>
289 SDR_CTRLGRP_DRAMADDRW_CSBITS_LSB) + 1;
290 u32 addrorder =
291 (cfg->ctrl_cfg & SDR_CTRLGRP_CTRLCFG_ADDRORDER_MASK) >>
292 SDR_CTRLGRP_CTRLCFG_ADDRORDER_LSB;
293
294 u32 ctrl_cfg = cfg->ctrl_cfg;
295
296
297
298
299
300
301 if (csbits == 1) {
302 if (addrorder != 0)
303 debug("INFO: Changing address order to 0 (chip, row, bank, column)\n");
304 addrorder = 0;
305 } else if (csbits == 2) {
306 if (addrorder != 2)
307 debug("INFO: Changing address order to 2 (row, chip, bank, column)\n");
308 addrorder = 2;
309 }
310
311 ctrl_cfg &= ~SDR_CTRLGRP_CTRLCFG_ADDRORDER_MASK;
312 ctrl_cfg |= addrorder << SDR_CTRLGRP_CTRLCFG_ADDRORDER_LSB;
313
314 return ctrl_cfg;
315}
316
317
318
319
320
321
322
323static u32 sdr_get_addr_rw(const struct socfpga_sdram_config *cfg)
324{
325
326
327
328
329
330
331
332 const int rows = get_errata_rows(cfg);
333 u32 dram_addrw = cfg->dram_addrw & ~SDR_CTRLGRP_DRAMADDRW_ROWBITS_MASK;
334
335 return dram_addrw | (rows << SDR_CTRLGRP_DRAMADDRW_ROWBITS_LSB);
336}
337
338
339
340
341
342
343
344static void sdr_load_regs(struct socfpga_sdr_ctrl *sdr_ctrl,
345 const struct socfpga_sdram_config *cfg)
346{
347 const u32 ctrl_cfg = sdr_get_ctrlcfg(cfg);
348 const u32 dram_addrw = sdr_get_addr_rw(cfg);
349
350 debug("\nConfiguring CTRLCFG\n");
351 writel(ctrl_cfg, &sdr_ctrl->ctrl_cfg);
352
353 debug("Configuring DRAMTIMING1\n");
354 writel(cfg->dram_timing1, &sdr_ctrl->dram_timing1);
355
356 debug("Configuring DRAMTIMING2\n");
357 writel(cfg->dram_timing2, &sdr_ctrl->dram_timing2);
358
359 debug("Configuring DRAMTIMING3\n");
360 writel(cfg->dram_timing3, &sdr_ctrl->dram_timing3);
361
362 debug("Configuring DRAMTIMING4\n");
363 writel(cfg->dram_timing4, &sdr_ctrl->dram_timing4);
364
365 debug("Configuring LOWPWRTIMING\n");
366 writel(cfg->lowpwr_timing, &sdr_ctrl->lowpwr_timing);
367
368 debug("Configuring DRAMADDRW\n");
369 writel(dram_addrw, &sdr_ctrl->dram_addrw);
370
371 debug("Configuring DRAMIFWIDTH\n");
372 writel(cfg->dram_if_width, &sdr_ctrl->dram_if_width);
373
374 debug("Configuring DRAMDEVWIDTH\n");
375 writel(cfg->dram_dev_width, &sdr_ctrl->dram_dev_width);
376
377 debug("Configuring LOWPWREQ\n");
378 writel(cfg->lowpwr_eq, &sdr_ctrl->lowpwr_eq);
379
380 debug("Configuring DRAMINTR\n");
381 writel(cfg->dram_intr, &sdr_ctrl->dram_intr);
382
383 debug("Configuring STATICCFG\n");
384 writel(cfg->static_cfg, &sdr_ctrl->static_cfg);
385
386 debug("Configuring CTRLWIDTH\n");
387 writel(cfg->ctrl_width, &sdr_ctrl->ctrl_width);
388
389 debug("Configuring PORTCFG\n");
390 writel(cfg->port_cfg, &sdr_ctrl->port_cfg);
391
392 debug("Configuring FIFOCFG\n");
393 writel(cfg->fifo_cfg, &sdr_ctrl->fifo_cfg);
394
395 debug("Configuring MPPRIORITY\n");
396 writel(cfg->mp_priority, &sdr_ctrl->mp_priority);
397
398 debug("Configuring MPWEIGHT_MPWEIGHT_0\n");
399 writel(cfg->mp_weight0, &sdr_ctrl->mp_weight0);
400 writel(cfg->mp_weight1, &sdr_ctrl->mp_weight1);
401 writel(cfg->mp_weight2, &sdr_ctrl->mp_weight2);
402 writel(cfg->mp_weight3, &sdr_ctrl->mp_weight3);
403
404 debug("Configuring MPPACING_MPPACING_0\n");
405 writel(cfg->mp_pacing0, &sdr_ctrl->mp_pacing0);
406 writel(cfg->mp_pacing1, &sdr_ctrl->mp_pacing1);
407 writel(cfg->mp_pacing2, &sdr_ctrl->mp_pacing2);
408 writel(cfg->mp_pacing3, &sdr_ctrl->mp_pacing3);
409
410 debug("Configuring MPTHRESHOLDRST_MPTHRESHOLDRST_0\n");
411 writel(cfg->mp_threshold0, &sdr_ctrl->mp_threshold0);
412 writel(cfg->mp_threshold1, &sdr_ctrl->mp_threshold1);
413 writel(cfg->mp_threshold2, &sdr_ctrl->mp_threshold2);
414
415 debug("Configuring PHYCTRL_PHYCTRL_0\n");
416 writel(cfg->phy_ctrl0, &sdr_ctrl->phy_ctrl0);
417
418 debug("Configuring CPORTWIDTH\n");
419 writel(cfg->cport_width, &sdr_ctrl->cport_width);
420
421 debug("Configuring CPORTWMAP\n");
422 writel(cfg->cport_wmap, &sdr_ctrl->cport_wmap);
423
424 debug("Configuring CPORTRMAP\n");
425 writel(cfg->cport_rmap, &sdr_ctrl->cport_rmap);
426
427 debug("Configuring RFIFOCMAP\n");
428 writel(cfg->rfifo_cmap, &sdr_ctrl->rfifo_cmap);
429
430 debug("Configuring WFIFOCMAP\n");
431 writel(cfg->wfifo_cmap, &sdr_ctrl->wfifo_cmap);
432
433 debug("Configuring CPORTRDWR\n");
434 writel(cfg->cport_rdwr, &sdr_ctrl->cport_rdwr);
435
436 debug("Configuring DRAMODT\n");
437 writel(cfg->dram_odt, &sdr_ctrl->dram_odt);
438
439 debug("Configuring EXTRATIME1\n");
440 writel(cfg->extratime1, &sdr_ctrl->extratime1);
441}
442
443
444
445
446
447
448
449int sdram_mmr_init_full(struct socfpga_sdr_ctrl *sdr_ctrl,
450 unsigned int sdr_phy_reg)
451{
452 const struct socfpga_sdram_config *cfg = socfpga_get_sdram_config();
453 const unsigned int rows =
454 (cfg->dram_addrw & SDR_CTRLGRP_DRAMADDRW_ROWBITS_MASK) >>
455 SDR_CTRLGRP_DRAMADDRW_ROWBITS_LSB;
456 int ret;
457
458 writel(rows, &sysmgr_regs->iswgrp_handoff[4]);
459
460 sdr_load_regs(sdr_ctrl, cfg);
461
462
463 writel(cfg->fpgaport_rst, &sysmgr_regs->iswgrp_handoff[3]);
464
465
466 if (fpgamgr_test_fpga_ready()) {
467 ret = sdram_write_verify(&sdr_ctrl->fpgaport_rst,
468 cfg->fpgaport_rst);
469 if (ret)
470 return ret;
471 }
472
473
474 if (sdr_phy_reg != 0xffffffff)
475 writel(sdr_phy_reg, &sdr_ctrl->phy_ctrl0);
476
477
478 debug("Configuring STATICCFG\n");
479 clrsetbits_le32(&sdr_ctrl->static_cfg,
480 SDR_CTRLGRP_STATICCFG_APPLYCFG_MASK,
481 1 << SDR_CTRLGRP_STATICCFG_APPLYCFG_LSB);
482
483 sdram_set_protection_config(sdr_ctrl, 0,
484 sdram_calculate_size(sdr_ctrl) - 1);
485
486 sdram_dump_protection_config(sdr_ctrl);
487
488 return 0;
489}
490
491
492
493
494
495
496
497static unsigned long sdram_calculate_size(struct socfpga_sdr_ctrl *sdr_ctrl)
498{
499 unsigned long temp;
500 unsigned long row, bank, col, cs, width;
501 const struct socfpga_sdram_config *cfg = socfpga_get_sdram_config();
502 const unsigned int csbits =
503 ((cfg->dram_addrw & SDR_CTRLGRP_DRAMADDRW_CSBITS_MASK) >>
504 SDR_CTRLGRP_DRAMADDRW_CSBITS_LSB) + 1;
505 const unsigned int rowbits =
506 (cfg->dram_addrw & SDR_CTRLGRP_DRAMADDRW_ROWBITS_MASK) >>
507 SDR_CTRLGRP_DRAMADDRW_ROWBITS_LSB;
508
509 temp = readl(&sdr_ctrl->dram_addrw);
510 col = (temp & SDR_CTRLGRP_DRAMADDRW_COLBITS_MASK) >>
511 SDR_CTRLGRP_DRAMADDRW_COLBITS_LSB;
512
513
514
515
516
517
518
519 row = readl(&sysmgr_regs->iswgrp_handoff[4]);
520 if (row == 0)
521 row = rowbits;
522
523
524
525
526
527
528
529 if (row > 31)
530 row = rowbits;
531
532 bank = (temp & SDR_CTRLGRP_DRAMADDRW_BANKBITS_MASK) >>
533 SDR_CTRLGRP_DRAMADDRW_BANKBITS_LSB;
534
535
536
537
538
539
540
541 cs = csbits;
542
543 width = readl(&sdr_ctrl->dram_if_width);
544
545
546 if (width == SDRAM_WIDTH_32BIT_WITH_ECC)
547 width = 32;
548 if (width == SDRAM_WIDTH_16BIT_WITH_ECC)
549 width = 16;
550
551
552 temp = 1 << (row + bank + col);
553 temp = temp * cs * (width / 8);
554
555 debug("%s returns %ld\n", __func__, temp);
556
557 return temp;
558}
559
560static int altera_gen5_sdram_ofdata_to_platdata(struct udevice *dev)
561{
562 struct altera_gen5_sdram_platdata *plat = dev->platdata;
563
564 plat->sdr = (struct socfpga_sdr *)devfdt_get_addr_index(dev, 0);
565 if (!plat->sdr)
566 return -ENODEV;
567
568 return 0;
569}
570
571static int altera_gen5_sdram_probe(struct udevice *dev)
572{
573 int ret;
574 unsigned long sdram_size;
575 struct altera_gen5_sdram_platdata *plat = dev->platdata;
576 struct altera_gen5_sdram_priv *priv = dev_get_priv(dev);
577 struct socfpga_sdr_ctrl *sdr_ctrl = &plat->sdr->sdr_ctrl;
578 struct reset_ctl_bulk resets;
579
580 ret = reset_get_bulk(dev, &resets);
581 if (ret) {
582 dev_err(dev, "Can't get reset: %d\n", ret);
583 return -ENODEV;
584 }
585 reset_deassert_bulk(&resets);
586
587 if (sdram_mmr_init_full(sdr_ctrl, 0xffffffff) != 0) {
588 puts("SDRAM init failed.\n");
589 goto failed;
590 }
591
592 debug("SDRAM: Calibrating PHY\n");
593
594 if (sdram_calibration_full(plat->sdr) == 0) {
595 puts("SDRAM calibration failed.\n");
596 goto failed;
597 }
598
599 sdram_size = sdram_calculate_size(sdr_ctrl);
600 debug("SDRAM: %ld MiB\n", sdram_size >> 20);
601
602
603 if (get_ram_size(0, sdram_size) != sdram_size) {
604 puts("SDRAM size check failed!\n");
605 goto failed;
606 }
607
608 priv->info.base = 0;
609 priv->info.size = sdram_size;
610
611 return 0;
612
613failed:
614 reset_release_bulk(&resets);
615 return -ENODEV;
616}
617
618static int altera_gen5_sdram_get_info(struct udevice *dev,
619 struct ram_info *info)
620{
621 struct altera_gen5_sdram_priv *priv = dev_get_priv(dev);
622
623 info->base = priv->info.base;
624 info->size = priv->info.size;
625
626 return 0;
627}
628
629static struct ram_ops altera_gen5_sdram_ops = {
630 .get_info = altera_gen5_sdram_get_info,
631};
632
633static const struct udevice_id altera_gen5_sdram_ids[] = {
634 { .compatible = "altr,sdr-ctl" },
635 { }
636};
637
638U_BOOT_DRIVER(altera_gen5_sdram) = {
639 .name = "altr_sdr_ctl",
640 .id = UCLASS_RAM,
641 .of_match = altera_gen5_sdram_ids,
642 .ops = &altera_gen5_sdram_ops,
643 .ofdata_to_platdata = altera_gen5_sdram_ofdata_to_platdata,
644 .platdata_auto_alloc_size = sizeof(struct altera_gen5_sdram_platdata),
645 .probe = altera_gen5_sdram_probe,
646 .priv_auto_alloc_size = sizeof(struct altera_gen5_sdram_priv),
647};
648
649#endif
650