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tests/microbit-test: Add Tests for nRF51 Timer
[qemu/ar7.git] / hw / ppc / ppc4xx_devs.c
blob8c6f3c9577622337bcb4fc21686b4b2f50ef74ed
1 /*
2 * QEMU PowerPC 4xx embedded processors shared devices emulation
3 *
4 * Copyright (c) 2007 Jocelyn Mayer
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24 #include "qemu/osdep.h"
25 #include "qemu/units.h"
26 #include "cpu.h"
27 #include "hw/hw.h"
28 #include "hw/ppc/ppc.h"
29 #include "hw/ppc/ppc4xx.h"
30 #include "hw/boards.h"
31 #include "qemu/log.h"
32 #include "exec/address-spaces.h"
33 #include "qemu/error-report.h"
34
35 #define DEBUG_UIC
36
37
38 #ifdef DEBUG_UIC
39 # define LOG_UIC(...) qemu_log_mask(CPU_LOG_INT, ## __VA_ARGS__)
40 #else
41 # define LOG_UIC(...) do { } while (0)
42 #endif
43
44 static void ppc4xx_reset(void *opaque)
45 {
46 PowerPCCPU *cpu = opaque;
47
48 cpu_reset(CPU(cpu));
49 }
50
51 /*****************************************************************************/
52 /* Generic PowerPC 4xx processor instantiation */
53 PowerPCCPU *ppc4xx_init(const char *cpu_type,
54 clk_setup_t *cpu_clk, clk_setup_t *tb_clk,
55 uint32_t sysclk)
56 {
57 PowerPCCPU *cpu;
58 CPUPPCState *env;
59
60 /* init CPUs */
61 cpu = POWERPC_CPU(cpu_create(cpu_type));
62 env = &cpu->env;
63
64 cpu_clk->cb = NULL; /* We don't care about CPU clock frequency changes */
65 cpu_clk->opaque = env;
66 /* Set time-base frequency to sysclk */
67 tb_clk->cb = ppc_40x_timers_init(env, sysclk, PPC_INTERRUPT_PIT);
68 tb_clk->opaque = env;
69 ppc_dcr_init(env, NULL, NULL);
70 /* Register qemu callbacks */
71 qemu_register_reset(ppc4xx_reset, cpu);
72
73 return cpu;
74 }
75
76 /*****************************************************************************/
77 /* "Universal" Interrupt controller */
78 enum {
79 DCR_UICSR = 0x000,
80 DCR_UICSRS = 0x001,
81 DCR_UICER = 0x002,
82 DCR_UICCR = 0x003,
83 DCR_UICPR = 0x004,
84 DCR_UICTR = 0x005,
85 DCR_UICMSR = 0x006,
86 DCR_UICVR = 0x007,
87 DCR_UICVCR = 0x008,
88 DCR_UICMAX = 0x009,
89 };
90
91 #define UIC_MAX_IRQ 32
92 typedef struct ppcuic_t ppcuic_t;
93 struct ppcuic_t {
94 uint32_t dcr_base;
95 int use_vectors;
96 uint32_t level; /* Remembers the state of level-triggered interrupts. */
97 uint32_t uicsr; /* Status register */
98 uint32_t uicer; /* Enable register */
99 uint32_t uiccr; /* Critical register */
100 uint32_t uicpr; /* Polarity register */
101 uint32_t uictr; /* Triggering register */
102 uint32_t uicvcr; /* Vector configuration register */
103 uint32_t uicvr;
104 qemu_irq *irqs;
105 };
106
107 static void ppcuic_trigger_irq (ppcuic_t *uic)
108 {
109 uint32_t ir, cr;
110 int start, end, inc, i;
111
112 /* Trigger interrupt if any is pending */
113 ir = uic->uicsr & uic->uicer & (~uic->uiccr);
114 cr = uic->uicsr & uic->uicer & uic->uiccr;
115 LOG_UIC("%s: uicsr %08" PRIx32 " uicer %08" PRIx32
116 " uiccr %08" PRIx32 "\n"
117 " %08" PRIx32 " ir %08" PRIx32 " cr %08" PRIx32 "\n",
118 __func__, uic->uicsr, uic->uicer, uic->uiccr,
119 uic->uicsr & uic->uicer, ir, cr);
120 if (ir != 0x0000000) {
121 LOG_UIC("Raise UIC interrupt\n");
122 qemu_irq_raise(uic->irqs[PPCUIC_OUTPUT_INT]);
123 } else {
124 LOG_UIC("Lower UIC interrupt\n");
125 qemu_irq_lower(uic->irqs[PPCUIC_OUTPUT_INT]);
126 }
127 /* Trigger critical interrupt if any is pending and update vector */
128 if (cr != 0x0000000) {
129 qemu_irq_raise(uic->irqs[PPCUIC_OUTPUT_CINT]);
130 if (uic->use_vectors) {
131 /* Compute critical IRQ vector */
132 if (uic->uicvcr & 1) {
133 start = 31;
134 end = 0;
135 inc = -1;
136 } else {
137 start = 0;
138 end = 31;
139 inc = 1;
140 }
141 uic->uicvr = uic->uicvcr & 0xFFFFFFFC;
142 for (i = start; i <= end; i += inc) {
143 if (cr & (1 << i)) {
144 uic->uicvr += (i - start) * 512 * inc;
145 break;
146 }
147 }
148 }
149 LOG_UIC("Raise UIC critical interrupt - "
150 "vector %08" PRIx32 "\n", uic->uicvr);
151 } else {
152 LOG_UIC("Lower UIC critical interrupt\n");
153 qemu_irq_lower(uic->irqs[PPCUIC_OUTPUT_CINT]);
154 uic->uicvr = 0x00000000;
155 }
156 }
157
158 static void ppcuic_set_irq (void *opaque, int irq_num, int level)
159 {
160 ppcuic_t *uic;
161 uint32_t mask, sr;
162
163 uic = opaque;
164 mask = 1U << (31-irq_num);
165 LOG_UIC("%s: irq %d level %d uicsr %08" PRIx32
166 " mask %08" PRIx32 " => %08" PRIx32 " %08" PRIx32 "\n",
167 __func__, irq_num, level,
168 uic->uicsr, mask, uic->uicsr & mask, level << irq_num);
169 if (irq_num < 0 || irq_num > 31)
170 return;
171 sr = uic->uicsr;
172
173 /* Update status register */
174 if (uic->uictr & mask) {
175 /* Edge sensitive interrupt */
176 if (level == 1)
177 uic->uicsr |= mask;
178 } else {
179 /* Level sensitive interrupt */
180 if (level == 1) {
181 uic->uicsr |= mask;
182 uic->level |= mask;
183 } else {
184 uic->uicsr &= ~mask;
185 uic->level &= ~mask;
186 }
187 }
188 LOG_UIC("%s: irq %d level %d sr %" PRIx32 " => "
189 "%08" PRIx32 "\n", __func__, irq_num, level, uic->uicsr, sr);
190 if (sr != uic->uicsr)
191 ppcuic_trigger_irq(uic);
192 }
193
194 static uint32_t dcr_read_uic (void *opaque, int dcrn)
195 {
196 ppcuic_t *uic;
197 uint32_t ret;
198
199 uic = opaque;
200 dcrn -= uic->dcr_base;
201 switch (dcrn) {
202 case DCR_UICSR:
203 case DCR_UICSRS:
204 ret = uic->uicsr;
205 break;
206 case DCR_UICER:
207 ret = uic->uicer;
208 break;
209 case DCR_UICCR:
210 ret = uic->uiccr;
211 break;
212 case DCR_UICPR:
213 ret = uic->uicpr;
214 break;
215 case DCR_UICTR:
216 ret = uic->uictr;
217 break;
218 case DCR_UICMSR:
219 ret = uic->uicsr & uic->uicer;
220 break;
221 case DCR_UICVR:
222 if (!uic->use_vectors)
223 goto no_read;
224 ret = uic->uicvr;
225 break;
226 case DCR_UICVCR:
227 if (!uic->use_vectors)
228 goto no_read;
229 ret = uic->uicvcr;
230 break;
231 default:
232 no_read:
233 ret = 0x00000000;
234 break;
235 }
236
237 return ret;
238 }
239
240 static void dcr_write_uic (void *opaque, int dcrn, uint32_t val)
241 {
242 ppcuic_t *uic;
243
244 uic = opaque;
245 dcrn -= uic->dcr_base;
246 LOG_UIC("%s: dcr %d val 0x%x\n", __func__, dcrn, val);
247 switch (dcrn) {
248 case DCR_UICSR:
249 uic->uicsr &= ~val;
250 uic->uicsr |= uic->level;
251 ppcuic_trigger_irq(uic);
252 break;
253 case DCR_UICSRS:
254 uic->uicsr |= val;
255 ppcuic_trigger_irq(uic);
256 break;
257 case DCR_UICER:
258 uic->uicer = val;
259 ppcuic_trigger_irq(uic);
260 break;
261 case DCR_UICCR:
262 uic->uiccr = val;
263 ppcuic_trigger_irq(uic);
264 break;
265 case DCR_UICPR:
266 uic->uicpr = val;
267 break;
268 case DCR_UICTR:
269 uic->uictr = val;
270 ppcuic_trigger_irq(uic);
271 break;
272 case DCR_UICMSR:
273 break;
274 case DCR_UICVR:
275 break;
276 case DCR_UICVCR:
277 uic->uicvcr = val & 0xFFFFFFFD;
278 ppcuic_trigger_irq(uic);
279 break;
280 }
281 }
282
283 static void ppcuic_reset (void *opaque)
284 {
285 ppcuic_t *uic;
286
287 uic = opaque;
288 uic->uiccr = 0x00000000;
289 uic->uicer = 0x00000000;
290 uic->uicpr = 0x00000000;
291 uic->uicsr = 0x00000000;
292 uic->uictr = 0x00000000;
293 if (uic->use_vectors) {
294 uic->uicvcr = 0x00000000;
295 uic->uicvr = 0x0000000;
296 }
297 }
298
299 qemu_irq *ppcuic_init (CPUPPCState *env, qemu_irq *irqs,
300 uint32_t dcr_base, int has_ssr, int has_vr)
301 {
302 ppcuic_t *uic;
303 int i;
304
305 uic = g_malloc0(sizeof(ppcuic_t));
306 uic->dcr_base = dcr_base;
307 uic->irqs = irqs;
308 if (has_vr)
309 uic->use_vectors = 1;
310 for (i = 0; i < DCR_UICMAX; i++) {
311 ppc_dcr_register(env, dcr_base + i, uic,
312 &dcr_read_uic, &dcr_write_uic);
313 }
314 qemu_register_reset(ppcuic_reset, uic);
315
316 return qemu_allocate_irqs(&ppcuic_set_irq, uic, UIC_MAX_IRQ);
317 }
318
319 /*****************************************************************************/
320 /* SDRAM controller */
321 typedef struct ppc4xx_sdram_t ppc4xx_sdram_t;
322 struct ppc4xx_sdram_t {
323 uint32_t addr;
324 int nbanks;
325 MemoryRegion containers[4]; /* used for clipping */
326 MemoryRegion *ram_memories;
327 hwaddr ram_bases[4];
328 hwaddr ram_sizes[4];
329 uint32_t besr0;
330 uint32_t besr1;
331 uint32_t bear;
332 uint32_t cfg;
333 uint32_t status;
334 uint32_t rtr;
335 uint32_t pmit;
336 uint32_t bcr[4];
337 uint32_t tr;
338 uint32_t ecccfg;
339 uint32_t eccesr;
340 qemu_irq irq;
341 };
342
343 enum {
344 SDRAM0_CFGADDR = 0x010,
345 SDRAM0_CFGDATA = 0x011,
346 };
347
348 /* XXX: TOFIX: some patches have made this code become inconsistent:
349 * there are type inconsistencies, mixing hwaddr, target_ulong
350 * and uint32_t
351 */
352 static uint32_t sdram_bcr (hwaddr ram_base,
353 hwaddr ram_size)
354 {
355 uint32_t bcr;
356
357 switch (ram_size) {
358 case 4 * MiB:
359 bcr = 0x00000000;
360 break;
361 case 8 * MiB:
362 bcr = 0x00020000;
363 break;
364 case 16 * MiB:
365 bcr = 0x00040000;
366 break;
367 case 32 * MiB:
368 bcr = 0x00060000;
369 break;
370 case 64 * MiB:
371 bcr = 0x00080000;
372 break;
373 case 128 * MiB:
374 bcr = 0x000A0000;
375 break;
376 case 256 * MiB:
377 bcr = 0x000C0000;
378 break;
379 default:
380 printf("%s: invalid RAM size " TARGET_FMT_plx "\n", __func__,
381 ram_size);
382 return 0x00000000;
383 }
384 bcr |= ram_base & 0xFF800000;
385 bcr |= 1;
386
387 return bcr;
388 }
389
390 static inline hwaddr sdram_base(uint32_t bcr)
391 {
392 return bcr & 0xFF800000;
393 }
394
395 static target_ulong sdram_size (uint32_t bcr)
396 {
397 target_ulong size;
398 int sh;
399
400 sh = (bcr >> 17) & 0x7;
401 if (sh == 7)
402 size = -1;
403 else
404 size = (4 * MiB) << sh;
405
406 return size;
407 }
408
409 static void sdram_set_bcr(ppc4xx_sdram_t *sdram,
410 uint32_t *bcrp, uint32_t bcr, int enabled)
411 {
412 unsigned n = bcrp - sdram->bcr;
413
414 if (*bcrp & 0x00000001) {
415 /* Unmap RAM */
416 #ifdef DEBUG_SDRAM
417 printf("%s: unmap RAM area " TARGET_FMT_plx " " TARGET_FMT_lx "\n",
418 __func__, sdram_base(*bcrp), sdram_size(*bcrp));
419 #endif
420 memory_region_del_subregion(get_system_memory(),
421 &sdram->containers[n]);
422 memory_region_del_subregion(&sdram->containers[n],
423 &sdram->ram_memories[n]);
424 object_unparent(OBJECT(&sdram->containers[n]));
425 }
426 *bcrp = bcr & 0xFFDEE001;
427 if (enabled && (bcr & 0x00000001)) {
428 #ifdef DEBUG_SDRAM
429 printf("%s: Map RAM area " TARGET_FMT_plx " " TARGET_FMT_lx "\n",
430 __func__, sdram_base(bcr), sdram_size(bcr));
431 #endif
432 memory_region_init(&sdram->containers[n], NULL, "sdram-containers",
433 sdram_size(bcr));
434 memory_region_add_subregion(&sdram->containers[n], 0,
435 &sdram->ram_memories[n]);
436 memory_region_add_subregion(get_system_memory(),
437 sdram_base(bcr),
438 &sdram->containers[n]);
439 }
440 }
441
442 static void sdram_map_bcr (ppc4xx_sdram_t *sdram)
443 {
444 int i;
445
446 for (i = 0; i < sdram->nbanks; i++) {
447 if (sdram->ram_sizes[i] != 0) {
448 sdram_set_bcr(sdram,
449 &sdram->bcr[i],
450 sdram_bcr(sdram->ram_bases[i], sdram->ram_sizes[i]),
451 1);
452 } else {
453 sdram_set_bcr(sdram, &sdram->bcr[i], 0x00000000, 0);
454 }
455 }
456 }
457
458 static void sdram_unmap_bcr (ppc4xx_sdram_t *sdram)
459 {
460 int i;
461
462 for (i = 0; i < sdram->nbanks; i++) {
463 #ifdef DEBUG_SDRAM
464 printf("%s: Unmap RAM area " TARGET_FMT_plx " " TARGET_FMT_lx "\n",
465 __func__, sdram_base(sdram->bcr[i]), sdram_size(sdram->bcr[i]));
466 #endif
467 memory_region_del_subregion(get_system_memory(),
468 &sdram->ram_memories[i]);
469 }
470 }
471
472 static uint32_t dcr_read_sdram (void *opaque, int dcrn)
473 {
474 ppc4xx_sdram_t *sdram;
475 uint32_t ret;
476
477 sdram = opaque;
478 switch (dcrn) {
479 case SDRAM0_CFGADDR:
480 ret = sdram->addr;
481 break;
482 case SDRAM0_CFGDATA:
483 switch (sdram->addr) {
484 case 0x00: /* SDRAM_BESR0 */
485 ret = sdram->besr0;
486 break;
487 case 0x08: /* SDRAM_BESR1 */
488 ret = sdram->besr1;
489 break;
490 case 0x10: /* SDRAM_BEAR */
491 ret = sdram->bear;
492 break;
493 case 0x20: /* SDRAM_CFG */
494 ret = sdram->cfg;
495 break;
496 case 0x24: /* SDRAM_STATUS */
497 ret = sdram->status;
498 break;
499 case 0x30: /* SDRAM_RTR */
500 ret = sdram->rtr;
501 break;
502 case 0x34: /* SDRAM_PMIT */
503 ret = sdram->pmit;
504 break;
505 case 0x40: /* SDRAM_B0CR */
506 ret = sdram->bcr[0];
507 break;
508 case 0x44: /* SDRAM_B1CR */
509 ret = sdram->bcr[1];
510 break;
511 case 0x48: /* SDRAM_B2CR */
512 ret = sdram->bcr[2];
513 break;
514 case 0x4C: /* SDRAM_B3CR */
515 ret = sdram->bcr[3];
516 break;
517 case 0x80: /* SDRAM_TR */
518 ret = -1; /* ? */
519 break;
520 case 0x94: /* SDRAM_ECCCFG */
521 ret = sdram->ecccfg;
522 break;
523 case 0x98: /* SDRAM_ECCESR */
524 ret = sdram->eccesr;
525 break;
526 default: /* Error */
527 ret = -1;
528 break;
529 }
530 break;
531 default:
532 /* Avoid gcc warning */
533 ret = 0x00000000;
534 break;
535 }
536
537 return ret;
538 }
539
540 static void dcr_write_sdram (void *opaque, int dcrn, uint32_t val)
541 {
542 ppc4xx_sdram_t *sdram;
543
544 sdram = opaque;
545 switch (dcrn) {
546 case SDRAM0_CFGADDR:
547 sdram->addr = val;
548 break;
549 case SDRAM0_CFGDATA:
550 switch (sdram->addr) {
551 case 0x00: /* SDRAM_BESR0 */
552 sdram->besr0 &= ~val;
553 break;
554 case 0x08: /* SDRAM_BESR1 */
555 sdram->besr1 &= ~val;
556 break;
557 case 0x10: /* SDRAM_BEAR */
558 sdram->bear = val;
559 break;
560 case 0x20: /* SDRAM_CFG */
561 val &= 0xFFE00000;
562 if (!(sdram->cfg & 0x80000000) && (val & 0x80000000)) {
563 #ifdef DEBUG_SDRAM
564 printf("%s: enable SDRAM controller\n", __func__);
565 #endif
566 /* validate all RAM mappings */
567 sdram_map_bcr(sdram);
568 sdram->status &= ~0x80000000;
569 } else if ((sdram->cfg & 0x80000000) && !(val & 0x80000000)) {
570 #ifdef DEBUG_SDRAM
571 printf("%s: disable SDRAM controller\n", __func__);
572 #endif
573 /* invalidate all RAM mappings */
574 sdram_unmap_bcr(sdram);
575 sdram->status |= 0x80000000;
576 }
577 if (!(sdram->cfg & 0x40000000) && (val & 0x40000000))
578 sdram->status |= 0x40000000;
579 else if ((sdram->cfg & 0x40000000) && !(val & 0x40000000))
580 sdram->status &= ~0x40000000;
581 sdram->cfg = val;
582 break;
583 case 0x24: /* SDRAM_STATUS */
584 /* Read-only register */
585 break;
586 case 0x30: /* SDRAM_RTR */
587 sdram->rtr = val & 0x3FF80000;
588 break;
589 case 0x34: /* SDRAM_PMIT */
590 sdram->pmit = (val & 0xF8000000) | 0x07C00000;
591 break;
592 case 0x40: /* SDRAM_B0CR */
593 sdram_set_bcr(sdram, &sdram->bcr[0], val, sdram->cfg & 0x80000000);
594 break;
595 case 0x44: /* SDRAM_B1CR */
596 sdram_set_bcr(sdram, &sdram->bcr[1], val, sdram->cfg & 0x80000000);
597 break;
598 case 0x48: /* SDRAM_B2CR */
599 sdram_set_bcr(sdram, &sdram->bcr[2], val, sdram->cfg & 0x80000000);
600 break;
601 case 0x4C: /* SDRAM_B3CR */
602 sdram_set_bcr(sdram, &sdram->bcr[3], val, sdram->cfg & 0x80000000);
603 break;
604 case 0x80: /* SDRAM_TR */
605 sdram->tr = val & 0x018FC01F;
606 break;
607 case 0x94: /* SDRAM_ECCCFG */
608 sdram->ecccfg = val & 0x00F00000;
609 break;
610 case 0x98: /* SDRAM_ECCESR */
611 val &= 0xFFF0F000;
612 if (sdram->eccesr == 0 && val != 0)
613 qemu_irq_raise(sdram->irq);
614 else if (sdram->eccesr != 0 && val == 0)
615 qemu_irq_lower(sdram->irq);
616 sdram->eccesr = val;
617 break;
618 default: /* Error */
619 break;
620 }
621 break;
622 }
623 }
624
625 static void sdram_reset (void *opaque)
626 {
627 ppc4xx_sdram_t *sdram;
628
629 sdram = opaque;
630 sdram->addr = 0x00000000;
631 sdram->bear = 0x00000000;
632 sdram->besr0 = 0x00000000; /* No error */
633 sdram->besr1 = 0x00000000; /* No error */
634 sdram->cfg = 0x00000000;
635 sdram->ecccfg = 0x00000000; /* No ECC */
636 sdram->eccesr = 0x00000000; /* No error */
637 sdram->pmit = 0x07C00000;
638 sdram->rtr = 0x05F00000;
639 sdram->tr = 0x00854009;
640 /* We pre-initialize RAM banks */
641 sdram->status = 0x00000000;
642 sdram->cfg = 0x00800000;
643 }
644
645 void ppc4xx_sdram_init (CPUPPCState *env, qemu_irq irq, int nbanks,
646 MemoryRegion *ram_memories,
647 hwaddr *ram_bases,
648 hwaddr *ram_sizes,
649 int do_init)
650 {
651 ppc4xx_sdram_t *sdram;
652
653 sdram = g_malloc0(sizeof(ppc4xx_sdram_t));
654 sdram->irq = irq;
655 sdram->nbanks = nbanks;
656 sdram->ram_memories = ram_memories;
657 memset(sdram->ram_bases, 0, 4 * sizeof(hwaddr));
658 memcpy(sdram->ram_bases, ram_bases,
659 nbanks * sizeof(hwaddr));
660 memset(sdram->ram_sizes, 0, 4 * sizeof(hwaddr));
661 memcpy(sdram->ram_sizes, ram_sizes,
662 nbanks * sizeof(hwaddr));
663 qemu_register_reset(&sdram_reset, sdram);
664 ppc_dcr_register(env, SDRAM0_CFGADDR,
665 sdram, &dcr_read_sdram, &dcr_write_sdram);
666 ppc_dcr_register(env, SDRAM0_CFGDATA,
667 sdram, &dcr_read_sdram, &dcr_write_sdram);
668 if (do_init)
669 sdram_map_bcr(sdram);
670 }
671
672 /* Fill in consecutive SDRAM banks with 'ram_size' bytes of memory.
673 *
674 * sdram_bank_sizes[] must be 0-terminated.
675 *
676 * The 4xx SDRAM controller supports a small number of banks, and each bank
677 * must be one of a small set of sizes. The number of banks and the supported
678 * sizes varies by SoC. */
679 ram_addr_t ppc4xx_sdram_adjust(ram_addr_t ram_size, int nr_banks,
680 MemoryRegion ram_memories[],
681 hwaddr ram_bases[],
682 hwaddr ram_sizes[],
683 const unsigned int sdram_bank_sizes[])
684 {
685 MemoryRegion *ram = g_malloc0(sizeof(*ram));
686 ram_addr_t size_left = ram_size;
687 ram_addr_t base = 0;
688 unsigned int bank_size;
689 int i;
690 int j;
691
692 for (i = 0; i < nr_banks; i++) {
693 for (j = 0; sdram_bank_sizes[j] != 0; j++) {
694 bank_size = sdram_bank_sizes[j];
695 if (bank_size <= size_left) {
696 size_left -= bank_size;
697 }
698 }
699 if (!size_left) {
700 /* No need to use the remaining banks. */
701 break;
702 }
703 }
704
705 ram_size -= size_left;
706 if (size_left) {
707 error_report("Truncating memory to %" PRId64 " MiB to fit SDRAM"
708 " controller limits", ram_size / MiB);
709 }
710
711 memory_region_allocate_system_memory(ram, NULL, "ppc4xx.sdram", ram_size);
712
713 size_left = ram_size;
714 for (i = 0; i < nr_banks && size_left; i++) {
715 for (j = 0; sdram_bank_sizes[j] != 0; j++) {
716 bank_size = sdram_bank_sizes[j];
717
718 if (bank_size <= size_left) {
719 char name[32];
720 snprintf(name, sizeof(name), "ppc4xx.sdram%d", i);
721 memory_region_init_alias(&ram_memories[i], NULL, name, ram,
722 base, bank_size);
723 ram_bases[i] = base;
724 ram_sizes[i] = bank_size;
725 base += bank_size;
726 size_left -= bank_size;
727 break;
728 }
729 }
730 }
731
732 return ram_size;
733 }
734
735 /*****************************************************************************/
736 /* MAL */
737
738 enum {
739 MAL0_CFG = 0x180,
740 MAL0_ESR = 0x181,
741 MAL0_IER = 0x182,
742 MAL0_TXCASR = 0x184,
743 MAL0_TXCARR = 0x185,
744 MAL0_TXEOBISR = 0x186,
745 MAL0_TXDEIR = 0x187,
746 MAL0_RXCASR = 0x190,
747 MAL0_RXCARR = 0x191,
748 MAL0_RXEOBISR = 0x192,
749 MAL0_RXDEIR = 0x193,
750 MAL0_TXCTP0R = 0x1A0,
751 MAL0_RXCTP0R = 0x1C0,
752 MAL0_RCBS0 = 0x1E0,
753 MAL0_RCBS1 = 0x1E1,
754 };
755
756 typedef struct ppc4xx_mal_t ppc4xx_mal_t;
757 struct ppc4xx_mal_t {
758 qemu_irq irqs[4];
759 uint32_t cfg;
760 uint32_t esr;
761 uint32_t ier;
762 uint32_t txcasr;
763 uint32_t txcarr;
764 uint32_t txeobisr;
765 uint32_t txdeir;
766 uint32_t rxcasr;
767 uint32_t rxcarr;
768 uint32_t rxeobisr;
769 uint32_t rxdeir;
770 uint32_t *txctpr;
771 uint32_t *rxctpr;
772 uint32_t *rcbs;
773 uint8_t txcnum;
774 uint8_t rxcnum;
775 };
776
777 static void ppc4xx_mal_reset(void *opaque)
778 {
779 ppc4xx_mal_t *mal;
780
781 mal = opaque;
782 mal->cfg = 0x0007C000;
783 mal->esr = 0x00000000;
784 mal->ier = 0x00000000;
785 mal->rxcasr = 0x00000000;
786 mal->rxdeir = 0x00000000;
787 mal->rxeobisr = 0x00000000;
788 mal->txcasr = 0x00000000;
789 mal->txdeir = 0x00000000;
790 mal->txeobisr = 0x00000000;
791 }
792
793 static uint32_t dcr_read_mal(void *opaque, int dcrn)
794 {
795 ppc4xx_mal_t *mal;
796 uint32_t ret;
797
798 mal = opaque;
799 switch (dcrn) {
800 case MAL0_CFG:
801 ret = mal->cfg;
802 break;
803 case MAL0_ESR:
804 ret = mal->esr;
805 break;
806 case MAL0_IER:
807 ret = mal->ier;
808 break;
809 case MAL0_TXCASR:
810 ret = mal->txcasr;
811 break;
812 case MAL0_TXCARR:
813 ret = mal->txcarr;
814 break;
815 case MAL0_TXEOBISR:
816 ret = mal->txeobisr;
817 break;
818 case MAL0_TXDEIR:
819 ret = mal->txdeir;
820 break;
821 case MAL0_RXCASR:
822 ret = mal->rxcasr;
823 break;
824 case MAL0_RXCARR:
825 ret = mal->rxcarr;
826 break;
827 case MAL0_RXEOBISR:
828 ret = mal->rxeobisr;
829 break;
830 case MAL0_RXDEIR:
831 ret = mal->rxdeir;
832 break;
833 default:
834 ret = 0;
835 break;
836 }
837 if (dcrn >= MAL0_TXCTP0R && dcrn < MAL0_TXCTP0R + mal->txcnum) {
838 ret = mal->txctpr[dcrn - MAL0_TXCTP0R];
839 }
840 if (dcrn >= MAL0_RXCTP0R && dcrn < MAL0_RXCTP0R + mal->rxcnum) {
841 ret = mal->rxctpr[dcrn - MAL0_RXCTP0R];
842 }
843 if (dcrn >= MAL0_RCBS0 && dcrn < MAL0_RCBS0 + mal->rxcnum) {
844 ret = mal->rcbs[dcrn - MAL0_RCBS0];
845 }
846
847 return ret;
848 }
849
850 static void dcr_write_mal(void *opaque, int dcrn, uint32_t val)
851 {
852 ppc4xx_mal_t *mal;
853
854 mal = opaque;
855 switch (dcrn) {
856 case MAL0_CFG:
857 if (val & 0x80000000) {
858 ppc4xx_mal_reset(mal);
859 }
860 mal->cfg = val & 0x00FFC087;
861 break;
862 case MAL0_ESR:
863 /* Read/clear */
864 mal->esr &= ~val;
865 break;
866 case MAL0_IER:
867 mal->ier = val & 0x0000001F;
868 break;
869 case MAL0_TXCASR:
870 mal->txcasr = val & 0xF0000000;
871 break;
872 case MAL0_TXCARR:
873 mal->txcarr = val & 0xF0000000;
874 break;
875 case MAL0_TXEOBISR:
876 /* Read/clear */
877 mal->txeobisr &= ~val;
878 break;
879 case MAL0_TXDEIR:
880 /* Read/clear */
881 mal->txdeir &= ~val;
882 break;
883 case MAL0_RXCASR:
884 mal->rxcasr = val & 0xC0000000;
885 break;
886 case MAL0_RXCARR:
887 mal->rxcarr = val & 0xC0000000;
888 break;
889 case MAL0_RXEOBISR:
890 /* Read/clear */
891 mal->rxeobisr &= ~val;
892 break;
893 case MAL0_RXDEIR:
894 /* Read/clear */
895 mal->rxdeir &= ~val;
896 break;
897 }
898 if (dcrn >= MAL0_TXCTP0R && dcrn < MAL0_TXCTP0R + mal->txcnum) {
899 mal->txctpr[dcrn - MAL0_TXCTP0R] = val;
900 }
901 if (dcrn >= MAL0_RXCTP0R && dcrn < MAL0_RXCTP0R + mal->rxcnum) {
902 mal->rxctpr[dcrn - MAL0_RXCTP0R] = val;
903 }
904 if (dcrn >= MAL0_RCBS0 && dcrn < MAL0_RCBS0 + mal->rxcnum) {
905 mal->rcbs[dcrn - MAL0_RCBS0] = val & 0x000000FF;
906 }
907 }
908
909 void ppc4xx_mal_init(CPUPPCState *env, uint8_t txcnum, uint8_t rxcnum,
910 qemu_irq irqs[4])
911 {
912 ppc4xx_mal_t *mal;
913 int i;
914
915 assert(txcnum <= 32 && rxcnum <= 32);
916 mal = g_malloc0(sizeof(*mal));
917 mal->txcnum = txcnum;
918 mal->rxcnum = rxcnum;
919 mal->txctpr = g_new0(uint32_t, txcnum);
920 mal->rxctpr = g_new0(uint32_t, rxcnum);
921 mal->rcbs = g_new0(uint32_t, rxcnum);
922 for (i = 0; i < 4; i++) {
923 mal->irqs[i] = irqs[i];
924 }
925 qemu_register_reset(&ppc4xx_mal_reset, mal);
926 ppc_dcr_register(env, MAL0_CFG,
927 mal, &dcr_read_mal, &dcr_write_mal);
928 ppc_dcr_register(env, MAL0_ESR,
929 mal, &dcr_read_mal, &dcr_write_mal);
930 ppc_dcr_register(env, MAL0_IER,
931 mal, &dcr_read_mal, &dcr_write_mal);
932 ppc_dcr_register(env, MAL0_TXCASR,
933 mal, &dcr_read_mal, &dcr_write_mal);
934 ppc_dcr_register(env, MAL0_TXCARR,
935 mal, &dcr_read_mal, &dcr_write_mal);
936 ppc_dcr_register(env, MAL0_TXEOBISR,
937 mal, &dcr_read_mal, &dcr_write_mal);
938 ppc_dcr_register(env, MAL0_TXDEIR,
939 mal, &dcr_read_mal, &dcr_write_mal);
940 ppc_dcr_register(env, MAL0_RXCASR,
941 mal, &dcr_read_mal, &dcr_write_mal);
942 ppc_dcr_register(env, MAL0_RXCARR,
943 mal, &dcr_read_mal, &dcr_write_mal);
944 ppc_dcr_register(env, MAL0_RXEOBISR,
945 mal, &dcr_read_mal, &dcr_write_mal);
946 ppc_dcr_register(env, MAL0_RXDEIR,
947 mal, &dcr_read_mal, &dcr_write_mal);
948 for (i = 0; i < txcnum; i++) {
949 ppc_dcr_register(env, MAL0_TXCTP0R + i,
950 mal, &dcr_read_mal, &dcr_write_mal);
951 }
952 for (i = 0; i < rxcnum; i++) {
953 ppc_dcr_register(env, MAL0_RXCTP0R + i,
954 mal, &dcr_read_mal, &dcr_write_mal);
955 }
956 for (i = 0; i < rxcnum; i++) {
957 ppc_dcr_register(env, MAL0_RCBS0 + i,
958 mal, &dcr_read_mal, &dcr_write_mal);
959 }
960 }
AR7 emulation for QEMU