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25#include "qemu/osdep.h"
26#include "qemu/units.h"
27#include "sysemu/reset.h"
28#include "cpu.h"
29#include "hw/irq.h"
30#include "hw/ppc/ppc.h"
31#include "hw/ppc/ppc4xx.h"
32#include "hw/intc/ppc-uic.h"
33#include "hw/qdev-properties.h"
34#include "qemu/log.h"
35#include "exec/address-spaces.h"
36#include "qemu/error-report.h"
37#include "qapi/error.h"
38#include "trace.h"
39
40static void ppc4xx_reset(void *opaque)
41{
42 PowerPCCPU *cpu = opaque;
43
44 cpu_reset(CPU(cpu));
45}
46
47
48
49PowerPCCPU *ppc4xx_init(const char *cpu_type,
50 clk_setup_t *cpu_clk, clk_setup_t *tb_clk,
51 uint32_t sysclk)
52{
53 PowerPCCPU *cpu;
54 CPUPPCState *env;
55
56
57 cpu = POWERPC_CPU(cpu_create(cpu_type));
58 env = &cpu->env;
59
60 cpu_clk->cb = NULL;
61 cpu_clk->opaque = env;
62
63 tb_clk->cb = ppc_40x_timers_init(env, sysclk, PPC_INTERRUPT_PIT);
64 tb_clk->opaque = env;
65 ppc_dcr_init(env, NULL, NULL);
66
67 qemu_register_reset(ppc4xx_reset, cpu);
68
69 return cpu;
70}
71
72
73
74typedef struct ppc4xx_sdram_t ppc4xx_sdram_t;
75struct ppc4xx_sdram_t {
76 uint32_t addr;
77 int nbanks;
78 MemoryRegion containers[4];
79 MemoryRegion *ram_memories;
80 hwaddr ram_bases[4];
81 hwaddr ram_sizes[4];
82 uint32_t besr0;
83 uint32_t besr1;
84 uint32_t bear;
85 uint32_t cfg;
86 uint32_t status;
87 uint32_t rtr;
88 uint32_t pmit;
89 uint32_t bcr[4];
90 uint32_t tr;
91 uint32_t ecccfg;
92 uint32_t eccesr;
93 qemu_irq irq;
94};
95
96enum {
97 SDRAM0_CFGADDR = 0x010,
98 SDRAM0_CFGDATA = 0x011,
99};
100
101
102
103
104
105static uint32_t sdram_bcr (hwaddr ram_base,
106 hwaddr ram_size)
107{
108 uint32_t bcr;
109
110 switch (ram_size) {
111 case 4 * MiB:
112 bcr = 0x00000000;
113 break;
114 case 8 * MiB:
115 bcr = 0x00020000;
116 break;
117 case 16 * MiB:
118 bcr = 0x00040000;
119 break;
120 case 32 * MiB:
121 bcr = 0x00060000;
122 break;
123 case 64 * MiB:
124 bcr = 0x00080000;
125 break;
126 case 128 * MiB:
127 bcr = 0x000A0000;
128 break;
129 case 256 * MiB:
130 bcr = 0x000C0000;
131 break;
132 default:
133 qemu_log_mask(LOG_GUEST_ERROR,
134 "%s: invalid RAM size 0x%" HWADDR_PRIx "\n", __func__,
135 ram_size);
136 return 0x00000000;
137 }
138 bcr |= ram_base & 0xFF800000;
139 bcr |= 1;
140
141 return bcr;
142}
143
144static inline hwaddr sdram_base(uint32_t bcr)
145{
146 return bcr & 0xFF800000;
147}
148
149static target_ulong sdram_size (uint32_t bcr)
150{
151 target_ulong size;
152 int sh;
153
154 sh = (bcr >> 17) & 0x7;
155 if (sh == 7)
156 size = -1;
157 else
158 size = (4 * MiB) << sh;
159
160 return size;
161}
162
163static void sdram_set_bcr(ppc4xx_sdram_t *sdram, int i,
164 uint32_t bcr, int enabled)
165{
166 if (sdram->bcr[i] & 0x00000001) {
167
168 trace_ppc4xx_sdram_unmap(sdram_base(sdram->bcr[i]),
169 sdram_size(sdram->bcr[i]));
170 memory_region_del_subregion(get_system_memory(),
171 &sdram->containers[i]);
172 memory_region_del_subregion(&sdram->containers[i],
173 &sdram->ram_memories[i]);
174 object_unparent(OBJECT(&sdram->containers[i]));
175 }
176 sdram->bcr[i] = bcr & 0xFFDEE001;
177 if (enabled && (bcr & 0x00000001)) {
178 trace_ppc4xx_sdram_unmap(sdram_base(bcr), sdram_size(bcr));
179 memory_region_init(&sdram->containers[i], NULL, "sdram-containers",
180 sdram_size(bcr));
181 memory_region_add_subregion(&sdram->containers[i], 0,
182 &sdram->ram_memories[i]);
183 memory_region_add_subregion(get_system_memory(),
184 sdram_base(bcr),
185 &sdram->containers[i]);
186 }
187}
188
189static void sdram_map_bcr (ppc4xx_sdram_t *sdram)
190{
191 int i;
192
193 for (i = 0; i < sdram->nbanks; i++) {
194 if (sdram->ram_sizes[i] != 0) {
195 sdram_set_bcr(sdram, i, sdram_bcr(sdram->ram_bases[i],
196 sdram->ram_sizes[i]), 1);
197 } else {
198 sdram_set_bcr(sdram, i, 0x00000000, 0);
199 }
200 }
201}
202
203static void sdram_unmap_bcr (ppc4xx_sdram_t *sdram)
204{
205 int i;
206
207 for (i = 0; i < sdram->nbanks; i++) {
208 trace_ppc4xx_sdram_unmap(sdram_base(sdram->bcr[i]),
209 sdram_size(sdram->bcr[i]));
210 memory_region_del_subregion(get_system_memory(),
211 &sdram->ram_memories[i]);
212 }
213}
214
215static uint32_t dcr_read_sdram (void *opaque, int dcrn)
216{
217 ppc4xx_sdram_t *sdram;
218 uint32_t ret;
219
220 sdram = opaque;
221 switch (dcrn) {
222 case SDRAM0_CFGADDR:
223 ret = sdram->addr;
224 break;
225 case SDRAM0_CFGDATA:
226 switch (sdram->addr) {
227 case 0x00:
228 ret = sdram->besr0;
229 break;
230 case 0x08:
231 ret = sdram->besr1;
232 break;
233 case 0x10:
234 ret = sdram->bear;
235 break;
236 case 0x20:
237 ret = sdram->cfg;
238 break;
239 case 0x24:
240 ret = sdram->status;
241 break;
242 case 0x30:
243 ret = sdram->rtr;
244 break;
245 case 0x34:
246 ret = sdram->pmit;
247 break;
248 case 0x40:
249 ret = sdram->bcr[0];
250 break;
251 case 0x44:
252 ret = sdram->bcr[1];
253 break;
254 case 0x48:
255 ret = sdram->bcr[2];
256 break;
257 case 0x4C:
258 ret = sdram->bcr[3];
259 break;
260 case 0x80:
261 ret = -1;
262 break;
263 case 0x94:
264 ret = sdram->ecccfg;
265 break;
266 case 0x98:
267 ret = sdram->eccesr;
268 break;
269 default:
270 ret = -1;
271 break;
272 }
273 break;
274 default:
275
276 ret = 0x00000000;
277 break;
278 }
279
280 return ret;
281}
282
283static void dcr_write_sdram (void *opaque, int dcrn, uint32_t val)
284{
285 ppc4xx_sdram_t *sdram;
286
287 sdram = opaque;
288 switch (dcrn) {
289 case SDRAM0_CFGADDR:
290 sdram->addr = val;
291 break;
292 case SDRAM0_CFGDATA:
293 switch (sdram->addr) {
294 case 0x00:
295 sdram->besr0 &= ~val;
296 break;
297 case 0x08:
298 sdram->besr1 &= ~val;
299 break;
300 case 0x10:
301 sdram->bear = val;
302 break;
303 case 0x20:
304 val &= 0xFFE00000;
305 if (!(sdram->cfg & 0x80000000) && (val & 0x80000000)) {
306 trace_ppc4xx_sdram_enable("enable");
307
308 sdram_map_bcr(sdram);
309 sdram->status &= ~0x80000000;
310 } else if ((sdram->cfg & 0x80000000) && !(val & 0x80000000)) {
311 trace_ppc4xx_sdram_enable("disable");
312
313 sdram_unmap_bcr(sdram);
314 sdram->status |= 0x80000000;
315 }
316 if (!(sdram->cfg & 0x40000000) && (val & 0x40000000))
317 sdram->status |= 0x40000000;
318 else if ((sdram->cfg & 0x40000000) && !(val & 0x40000000))
319 sdram->status &= ~0x40000000;
320 sdram->cfg = val;
321 break;
322 case 0x24:
323
324 break;
325 case 0x30:
326 sdram->rtr = val & 0x3FF80000;
327 break;
328 case 0x34:
329 sdram->pmit = (val & 0xF8000000) | 0x07C00000;
330 break;
331 case 0x40:
332 sdram_set_bcr(sdram, 0, val, sdram->cfg & 0x80000000);
333 break;
334 case 0x44:
335 sdram_set_bcr(sdram, 1, val, sdram->cfg & 0x80000000);
336 break;
337 case 0x48:
338 sdram_set_bcr(sdram, 2, val, sdram->cfg & 0x80000000);
339 break;
340 case 0x4C:
341 sdram_set_bcr(sdram, 3, val, sdram->cfg & 0x80000000);
342 break;
343 case 0x80:
344 sdram->tr = val & 0x018FC01F;
345 break;
346 case 0x94:
347 sdram->ecccfg = val & 0x00F00000;
348 break;
349 case 0x98:
350 val &= 0xFFF0F000;
351 if (sdram->eccesr == 0 && val != 0)
352 qemu_irq_raise(sdram->irq);
353 else if (sdram->eccesr != 0 && val == 0)
354 qemu_irq_lower(sdram->irq);
355 sdram->eccesr = val;
356 break;
357 default:
358 break;
359 }
360 break;
361 }
362}
363
364static void sdram_reset (void *opaque)
365{
366 ppc4xx_sdram_t *sdram;
367
368 sdram = opaque;
369 sdram->addr = 0x00000000;
370 sdram->bear = 0x00000000;
371 sdram->besr0 = 0x00000000;
372 sdram->besr1 = 0x00000000;
373 sdram->cfg = 0x00000000;
374 sdram->ecccfg = 0x00000000;
375 sdram->eccesr = 0x00000000;
376 sdram->pmit = 0x07C00000;
377 sdram->rtr = 0x05F00000;
378 sdram->tr = 0x00854009;
379
380 sdram->status = 0x00000000;
381 sdram->cfg = 0x00800000;
382}
383
384void ppc4xx_sdram_init (CPUPPCState *env, qemu_irq irq, int nbanks,
385 MemoryRegion *ram_memories,
386 hwaddr *ram_bases,
387 hwaddr *ram_sizes,
388 int do_init)
389{
390 ppc4xx_sdram_t *sdram;
391
392 sdram = g_new0(ppc4xx_sdram_t, 1);
393 sdram->irq = irq;
394 sdram->nbanks = nbanks;
395 sdram->ram_memories = ram_memories;
396 memset(sdram->ram_bases, 0, 4 * sizeof(hwaddr));
397 memcpy(sdram->ram_bases, ram_bases,
398 nbanks * sizeof(hwaddr));
399 memset(sdram->ram_sizes, 0, 4 * sizeof(hwaddr));
400 memcpy(sdram->ram_sizes, ram_sizes,
401 nbanks * sizeof(hwaddr));
402 qemu_register_reset(&sdram_reset, sdram);
403 ppc_dcr_register(env, SDRAM0_CFGADDR,
404 sdram, &dcr_read_sdram, &dcr_write_sdram);
405 ppc_dcr_register(env, SDRAM0_CFGDATA,
406 sdram, &dcr_read_sdram, &dcr_write_sdram);
407 if (do_init)
408 sdram_map_bcr(sdram);
409}
410
411
412
413
414
415
416
417
418
419
420
421void ppc4xx_sdram_banks(MemoryRegion *ram, int nr_banks,
422 MemoryRegion ram_memories[],
423 hwaddr ram_bases[], hwaddr ram_sizes[],
424 const ram_addr_t sdram_bank_sizes[])
425{
426 ram_addr_t size_left = memory_region_size(ram);
427 ram_addr_t base = 0;
428 ram_addr_t bank_size;
429 int i;
430 int j;
431
432 for (i = 0; i < nr_banks; i++) {
433 for (j = 0; sdram_bank_sizes[j] != 0; j++) {
434 bank_size = sdram_bank_sizes[j];
435 if (bank_size <= size_left) {
436 char name[32];
437
438 ram_bases[i] = base;
439 ram_sizes[i] = bank_size;
440 base += bank_size;
441 size_left -= bank_size;
442 snprintf(name, sizeof(name), "ppc4xx.sdram%d", i);
443 memory_region_init_alias(&ram_memories[i], NULL, name, ram,
444 ram_bases[i], ram_sizes[i]);
445 break;
446 }
447 }
448 if (!size_left) {
449
450 break;
451 }
452 }
453
454 if (size_left) {
455 ram_addr_t used_size = memory_region_size(ram) - size_left;
456 GString *s = g_string_new(NULL);
457
458 for (i = 0; sdram_bank_sizes[i]; i++) {
459 g_string_append_printf(s, "%" PRIi64 "%s",
460 sdram_bank_sizes[i] / MiB,
461 sdram_bank_sizes[i + 1] ? ", " : "");
462 }
463 error_report("at most %d bank%s of %s MiB each supported",
464 nr_banks, nr_banks == 1 ? "" : "s", s->str);
465 error_printf("Possible valid RAM size: %" PRIi64 " MiB \n",
466 used_size ? used_size / MiB : sdram_bank_sizes[i - 1] / MiB);
467
468 g_string_free(s, true);
469 exit(EXIT_FAILURE);
470 }
471}
472
473
474
475
476enum {
477 MAL0_CFG = 0x180,
478 MAL0_ESR = 0x181,
479 MAL0_IER = 0x182,
480 MAL0_TXCASR = 0x184,
481 MAL0_TXCARR = 0x185,
482 MAL0_TXEOBISR = 0x186,
483 MAL0_TXDEIR = 0x187,
484 MAL0_RXCASR = 0x190,
485 MAL0_RXCARR = 0x191,
486 MAL0_RXEOBISR = 0x192,
487 MAL0_RXDEIR = 0x193,
488 MAL0_TXCTP0R = 0x1A0,
489 MAL0_RXCTP0R = 0x1C0,
490 MAL0_RCBS0 = 0x1E0,
491 MAL0_RCBS1 = 0x1E1,
492};
493
494typedef struct ppc4xx_mal_t ppc4xx_mal_t;
495struct ppc4xx_mal_t {
496 qemu_irq irqs[4];
497 uint32_t cfg;
498 uint32_t esr;
499 uint32_t ier;
500 uint32_t txcasr;
501 uint32_t txcarr;
502 uint32_t txeobisr;
503 uint32_t txdeir;
504 uint32_t rxcasr;
505 uint32_t rxcarr;
506 uint32_t rxeobisr;
507 uint32_t rxdeir;
508 uint32_t *txctpr;
509 uint32_t *rxctpr;
510 uint32_t *rcbs;
511 uint8_t txcnum;
512 uint8_t rxcnum;
513};
514
515static void ppc4xx_mal_reset(void *opaque)
516{
517 ppc4xx_mal_t *mal;
518
519 mal = opaque;
520 mal->cfg = 0x0007C000;
521 mal->esr = 0x00000000;
522 mal->ier = 0x00000000;
523 mal->rxcasr = 0x00000000;
524 mal->rxdeir = 0x00000000;
525 mal->rxeobisr = 0x00000000;
526 mal->txcasr = 0x00000000;
527 mal->txdeir = 0x00000000;
528 mal->txeobisr = 0x00000000;
529}
530
531static uint32_t dcr_read_mal(void *opaque, int dcrn)
532{
533 ppc4xx_mal_t *mal;
534 uint32_t ret;
535
536 mal = opaque;
537 switch (dcrn) {
538 case MAL0_CFG:
539 ret = mal->cfg;
540 break;
541 case MAL0_ESR:
542 ret = mal->esr;
543 break;
544 case MAL0_IER:
545 ret = mal->ier;
546 break;
547 case MAL0_TXCASR:
548 ret = mal->txcasr;
549 break;
550 case MAL0_TXCARR:
551 ret = mal->txcarr;
552 break;
553 case MAL0_TXEOBISR:
554 ret = mal->txeobisr;
555 break;
556 case MAL0_TXDEIR:
557 ret = mal->txdeir;
558 break;
559 case MAL0_RXCASR:
560 ret = mal->rxcasr;
561 break;
562 case MAL0_RXCARR:
563 ret = mal->rxcarr;
564 break;
565 case MAL0_RXEOBISR:
566 ret = mal->rxeobisr;
567 break;
568 case MAL0_RXDEIR:
569 ret = mal->rxdeir;
570 break;
571 default:
572 ret = 0;
573 break;
574 }
575 if (dcrn >= MAL0_TXCTP0R && dcrn < MAL0_TXCTP0R + mal->txcnum) {
576 ret = mal->txctpr[dcrn - MAL0_TXCTP0R];
577 }
578 if (dcrn >= MAL0_RXCTP0R && dcrn < MAL0_RXCTP0R + mal->rxcnum) {
579 ret = mal->rxctpr[dcrn - MAL0_RXCTP0R];
580 }
581 if (dcrn >= MAL0_RCBS0 && dcrn < MAL0_RCBS0 + mal->rxcnum) {
582 ret = mal->rcbs[dcrn - MAL0_RCBS0];
583 }
584
585 return ret;
586}
587
588static void dcr_write_mal(void *opaque, int dcrn, uint32_t val)
589{
590 ppc4xx_mal_t *mal;
591
592 mal = opaque;
593 switch (dcrn) {
594 case MAL0_CFG:
595 if (val & 0x80000000) {
596 ppc4xx_mal_reset(mal);
597 }
598 mal->cfg = val & 0x00FFC087;
599 break;
600 case MAL0_ESR:
601
602 mal->esr &= ~val;
603 break;
604 case MAL0_IER:
605 mal->ier = val & 0x0000001F;
606 break;
607 case MAL0_TXCASR:
608 mal->txcasr = val & 0xF0000000;
609 break;
610 case MAL0_TXCARR:
611 mal->txcarr = val & 0xF0000000;
612 break;
613 case MAL0_TXEOBISR:
614
615 mal->txeobisr &= ~val;
616 break;
617 case MAL0_TXDEIR:
618
619 mal->txdeir &= ~val;
620 break;
621 case MAL0_RXCASR:
622 mal->rxcasr = val & 0xC0000000;
623 break;
624 case MAL0_RXCARR:
625 mal->rxcarr = val & 0xC0000000;
626 break;
627 case MAL0_RXEOBISR:
628
629 mal->rxeobisr &= ~val;
630 break;
631 case MAL0_RXDEIR:
632
633 mal->rxdeir &= ~val;
634 break;
635 }
636 if (dcrn >= MAL0_TXCTP0R && dcrn < MAL0_TXCTP0R + mal->txcnum) {
637 mal->txctpr[dcrn - MAL0_TXCTP0R] = val;
638 }
639 if (dcrn >= MAL0_RXCTP0R && dcrn < MAL0_RXCTP0R + mal->rxcnum) {
640 mal->rxctpr[dcrn - MAL0_RXCTP0R] = val;
641 }
642 if (dcrn >= MAL0_RCBS0 && dcrn < MAL0_RCBS0 + mal->rxcnum) {
643 mal->rcbs[dcrn - MAL0_RCBS0] = val & 0x000000FF;
644 }
645}
646
647void ppc4xx_mal_init(CPUPPCState *env, uint8_t txcnum, uint8_t rxcnum,
648 qemu_irq irqs[4])
649{
650 ppc4xx_mal_t *mal;
651 int i;
652
653 assert(txcnum <= 32 && rxcnum <= 32);
654 mal = g_malloc0(sizeof(*mal));
655 mal->txcnum = txcnum;
656 mal->rxcnum = rxcnum;
657 mal->txctpr = g_new0(uint32_t, txcnum);
658 mal->rxctpr = g_new0(uint32_t, rxcnum);
659 mal->rcbs = g_new0(uint32_t, rxcnum);
660 for (i = 0; i < 4; i++) {
661 mal->irqs[i] = irqs[i];
662 }
663 qemu_register_reset(&ppc4xx_mal_reset, mal);
664 ppc_dcr_register(env, MAL0_CFG,
665 mal, &dcr_read_mal, &dcr_write_mal);
666 ppc_dcr_register(env, MAL0_ESR,
667 mal, &dcr_read_mal, &dcr_write_mal);
668 ppc_dcr_register(env, MAL0_IER,
669 mal, &dcr_read_mal, &dcr_write_mal);
670 ppc_dcr_register(env, MAL0_TXCASR,
671 mal, &dcr_read_mal, &dcr_write_mal);
672 ppc_dcr_register(env, MAL0_TXCARR,
673 mal, &dcr_read_mal, &dcr_write_mal);
674 ppc_dcr_register(env, MAL0_TXEOBISR,
675 mal, &dcr_read_mal, &dcr_write_mal);
676 ppc_dcr_register(env, MAL0_TXDEIR,
677 mal, &dcr_read_mal, &dcr_write_mal);
678 ppc_dcr_register(env, MAL0_RXCASR,
679 mal, &dcr_read_mal, &dcr_write_mal);
680 ppc_dcr_register(env, MAL0_RXCARR,
681 mal, &dcr_read_mal, &dcr_write_mal);
682 ppc_dcr_register(env, MAL0_RXEOBISR,
683 mal, &dcr_read_mal, &dcr_write_mal);
684 ppc_dcr_register(env, MAL0_RXDEIR,
685 mal, &dcr_read_mal, &dcr_write_mal);
686 for (i = 0; i < txcnum; i++) {
687 ppc_dcr_register(env, MAL0_TXCTP0R + i,
688 mal, &dcr_read_mal, &dcr_write_mal);
689 }
690 for (i = 0; i < rxcnum; i++) {
691 ppc_dcr_register(env, MAL0_RXCTP0R + i,
692 mal, &dcr_read_mal, &dcr_write_mal);
693 }
694 for (i = 0; i < rxcnum; i++) {
695 ppc_dcr_register(env, MAL0_RCBS0 + i,
696 mal, &dcr_read_mal, &dcr_write_mal);
697 }
698}
699