1 /*
2 * ASPEED SDRAM Memory Controller
3 *
4 * Copyright (C) 2016 IBM Corp.
5 *
6 * This code is licensed under the GPL version 2 or later. See
7 * the COPYING file in the top-level directory.
8 */
9
10 #include "qemu/osdep.h"
11 #include "qemu/log.h"
12 #include "qemu/module.h"
13 #include "qemu/error-report.h"
14 #include "hw/misc/aspeed_sdmc.h"
15 #include "hw/qdev-properties.h"
16 #include "migration/vmstate.h"
17 #include "qapi/error.h"
18 #include "trace.h"
19 #include "qemu/units.h"
20 #include "qemu/cutils.h"
21 #include "qapi/visitor.h"
22
23 /* Protection Key Register */
24 #define R_PROT (0x00 / 4)
25 #define PROT_UNLOCKED 0x01
26 #define PROT_HARDLOCKED 0x10 /* AST2600 */
27 #define PROT_SOFTLOCKED 0x00
28
29 #define PROT_KEY_UNLOCK 0xFC600309
30 #define PROT_2700_KEY_UNLOCK 0x1688A8A8
31 #define PROT_KEY_HARDLOCK 0xDEADDEAD /* AST2600 */
32
33 /* Configuration Register */
34 #define R_CONF (0x04 / 4)
35
36 /* Interrupt control/status */
37 #define R_ISR (0x50 / 4)
38
39 /* Control/Status Register #1 (ast2500) */
40 #define R_STATUS1 (0x60 / 4)
41 #define PHY_BUSY_STATE BIT(0)
42 #define PHY_PLL_LOCK_STATUS BIT(4)
43
44 /* Reserved */
45 #define R_MCR6C (0x6c / 4)
46
47 #define R_ECC_TEST_CTRL (0x70 / 4)
48 #define ECC_TEST_FINISHED BIT(12)
49 #define ECC_TEST_FAIL BIT(13)
50
51 #define R_TEST_START_LEN (0x74 / 4)
52 #define R_TEST_FAIL_DQ (0x78 / 4)
53 #define R_TEST_INIT_VAL (0x7c / 4)
54 #define R_DRAM_SW (0x88 / 4)
55 #define R_DRAM_TIME (0x8c / 4)
56 #define R_ECC_ERR_INJECT (0xb4 / 4)
57
58 /* AST2700 Register */
59 #define R_2700_PROT (0x00 / 4)
60 #define R_INT_STATUS (0x04 / 4)
61 #define R_INT_CLEAR (0x08 / 4)
62 #define R_INT_MASK (0x0c / 4)
63 #define R_MAIN_CONF (0x10 / 4)
64 #define R_MAIN_CONTROL (0x14 / 4)
65 #define R_MAIN_STATUS (0x18 / 4)
66 #define R_ERR_STATUS (0x1c / 4)
67 #define R_ECC_FAIL_STATUS (0x78 / 4)
68 #define R_ECC_FAIL_ADDR (0x7c / 4)
69 #define R_ECC_TESTING_CONTROL (0x80 / 4)
70 #define R_PROT_REGION_LOCK_STATUS (0x94 / 4)
71 #define R_TEST_FAIL_ADDR (0xd4 / 4)
72 #define R_TEST_FAIL_D0 (0xd8 / 4)
73 #define R_TEST_FAIL_D1 (0xdc / 4)
74 #define R_TEST_FAIL_D2 (0xe0 / 4)
75 #define R_TEST_FAIL_D3 (0xe4 / 4)
76 #define R_DBG_STATUS (0xf4 / 4)
77 #define R_PHY_INTERFACE_STATUS (0xf8 / 4)
78 #define R_GRAPHIC_MEM_BASE_ADDR (0x10c / 4)
79 #define R_PORT0_INTERFACE_MONITOR0 (0x240 / 4)
80 #define R_PORT0_INTERFACE_MONITOR1 (0x244 / 4)
81 #define R_PORT0_INTERFACE_MONITOR2 (0x248 / 4)
82 #define R_PORT1_INTERFACE_MONITOR0 (0x2c0 / 4)
83 #define R_PORT1_INTERFACE_MONITOR1 (0x2c4 / 4)
84 #define R_PORT1_INTERFACE_MONITOR2 (0x2c8 / 4)
85 #define R_PORT2_INTERFACE_MONITOR0 (0x340 / 4)
86 #define R_PORT2_INTERFACE_MONITOR1 (0x344 / 4)
87 #define R_PORT2_INTERFACE_MONITOR2 (0x348 / 4)
88 #define R_PORT3_INTERFACE_MONITOR0 (0x3c0 / 4)
89 #define R_PORT3_INTERFACE_MONITOR1 (0x3c4 / 4)
90 #define R_PORT3_INTERFACE_MONITOR2 (0x3c8 / 4)
91 #define R_PORT4_INTERFACE_MONITOR0 (0x440 / 4)
92 #define R_PORT4_INTERFACE_MONITOR1 (0x444 / 4)
93 #define R_PORT4_INTERFACE_MONITOR2 (0x448 / 4)
94 #define R_PORT5_INTERFACE_MONITOR0 (0x4c0 / 4)
95 #define R_PORT5_INTERFACE_MONITOR1 (0x4c4 / 4)
96 #define R_PORT5_INTERFACE_MONITOR2 (0x4c8 / 4)
97
98 /*
99 * Configuration register Ox4 (for Aspeed AST2400 SOC)
100 *
101 * These are for the record and future use. ASPEED_SDMC_DRAM_SIZE is
102 * what we care about right now as it is checked by U-Boot to
103 * determine the RAM size.
104 */
105
106 #define ASPEED_SDMC_RESERVED 0xFFFFF800 /* 31:11 reserved */
107 #define ASPEED_SDMC_AST2300_COMPAT (1 << 10)
108 #define ASPEED_SDMC_SCRAMBLE_PATTERN (1 << 9)
109 #define ASPEED_SDMC_DATA_SCRAMBLE (1 << 8)
110 #define ASPEED_SDMC_ECC_ENABLE (1 << 7)
111 #define ASPEED_SDMC_VGA_COMPAT (1 << 6) /* readonly */
112 #define ASPEED_SDMC_DRAM_BANK (1 << 5)
113 #define ASPEED_SDMC_DRAM_BURST (1 << 4)
114 #define ASPEED_SDMC_VGA_APERTURE(x) ((x & 0x3) << 2) /* readonly */
115 #define ASPEED_SDMC_VGA_8MB 0x0
116 #define ASPEED_SDMC_VGA_16MB 0x1
117 #define ASPEED_SDMC_VGA_32MB 0x2
118 #define ASPEED_SDMC_VGA_64MB 0x3
119 #define ASPEED_SDMC_DRAM_SIZE(x) (x & 0x3)
120
121 #define ASPEED_SDMC_READONLY_MASK \
122 (ASPEED_SDMC_RESERVED | ASPEED_SDMC_VGA_COMPAT | \
123 ASPEED_SDMC_VGA_APERTURE(ASPEED_SDMC_VGA_64MB))
124 /*
125 * Configuration register Ox4 (for Aspeed AST2500 SOC and higher)
126 *
127 * Incompatibilities are annotated in the list. ASPEED_SDMC_HW_VERSION
128 * should be set to 1 for the AST2500 SOC.
129 */
130 #define ASPEED_SDMC_HW_VERSION(x) ((x & 0xf) << 28) /* readonly */
131 #define ASPEED_SDMC_SW_VERSION ((x & 0xff) << 20)
132 #define ASPEED_SDMC_CACHE_INITIAL_DONE (1 << 19) /* readonly */
133 #define ASPEED_SDMC_AST2500_RESERVED 0x7C000 /* 18:14 reserved */
134 #define ASPEED_SDMC_CACHE_DDR4_CONF (1 << 13)
135 #define ASPEED_SDMC_CACHE_INITIAL (1 << 12)
136 #define ASPEED_SDMC_CACHE_RANGE_CTRL (1 << 11)
137 #define ASPEED_SDMC_CACHE_ENABLE (1 << 10) /* differs from AST2400 */
138 #define ASPEED_SDMC_DRAM_TYPE (1 << 4) /* differs from AST2400 */
139
140 #define ASPEED_SDMC_AST2500_READONLY_MASK \
141 (ASPEED_SDMC_HW_VERSION(0xf) | ASPEED_SDMC_CACHE_INITIAL_DONE | \
142 ASPEED_SDMC_AST2500_RESERVED | ASPEED_SDMC_VGA_COMPAT | \
143 ASPEED_SDMC_VGA_APERTURE(ASPEED_SDMC_VGA_64MB))
144
145 /*
146 * Main Configuration register Ox10 (for Aspeed AST2700 SOC and higher)
147 *
148 */
149 #define ASPEED_SDMC_AST2700_RESERVED 0xFFFF2082 /* 31:16, 13, 7, 1 */
150 #define ASPEED_SDMC_AST2700_DATA_SCRAMBLE (1 << 8)
151 #define ASPEED_SDMC_AST2700_ECC_ENABLE (1 << 6)
152 #define ASPEED_SDMC_AST2700_PAGE_MATCHING_ENABLE (1 << 5)
153 #define ASPEED_SDMC_AST2700_DRAM_SIZE(x) ((x & 0x7) << 2)
154
155 #define ASPEED_SDMC_AST2700_READONLY_MASK \
156 (ASPEED_SDMC_AST2700_RESERVED)
157
aspeed_sdmc_read(void * opaque,hwaddr addr,unsigned size)158 static uint64_t aspeed_sdmc_read(void *opaque, hwaddr addr, unsigned size)
159 {
160 AspeedSDMCState *s = ASPEED_SDMC(opaque);
161
162 addr >>= 2;
163
164 if (addr >= ARRAY_SIZE(s->regs)) {
165 qemu_log_mask(LOG_GUEST_ERROR,
166 "%s: Out-of-bounds read at offset 0x%" HWADDR_PRIx "\n",
167 __func__, addr * 4);
168 return 0;
169 }
170
171 trace_aspeed_sdmc_read(addr, s->regs[addr]);
172 return s->regs[addr];
173 }
174
aspeed_sdmc_write(void * opaque,hwaddr addr,uint64_t data,unsigned int size)175 static void aspeed_sdmc_write(void *opaque, hwaddr addr, uint64_t data,
176 unsigned int size)
177 {
178 AspeedSDMCState *s = ASPEED_SDMC(opaque);
179 AspeedSDMCClass *asc = ASPEED_SDMC_GET_CLASS(s);
180
181 addr >>= 2;
182
183 if (addr >= ARRAY_SIZE(s->regs)) {
184 qemu_log_mask(LOG_GUEST_ERROR,
185 "%s: Out-of-bounds write at offset 0x%" HWADDR_PRIx "\n",
186 __func__, addr);
187 return;
188 }
189
190 trace_aspeed_sdmc_write(addr, data);
191 asc->write(s, addr, data);
192 }
193
194 static const MemoryRegionOps aspeed_sdmc_ops = {
195 .read = aspeed_sdmc_read,
196 .write = aspeed_sdmc_write,
197 .endianness = DEVICE_LITTLE_ENDIAN,
198 .valid.min_access_size = 4,
199 .valid.max_access_size = 4,
200 };
201
aspeed_sdmc_reset(DeviceState * dev)202 static void aspeed_sdmc_reset(DeviceState *dev)
203 {
204 AspeedSDMCState *s = ASPEED_SDMC(dev);
205 AspeedSDMCClass *asc = ASPEED_SDMC_GET_CLASS(s);
206
207 memset(s->regs, 0, sizeof(s->regs));
208
209 /* Set ram size bit and defaults values */
210 s->regs[R_CONF] = asc->compute_conf(s, 0);
211
212 /*
213 * PHY status:
214 * - set phy status ok (set bit 1)
215 * - initial PVT calibration ok (clear bit 3)
216 * - runtime calibration ok (clear bit 5)
217 */
218 s->regs[0x100] = BIT(1);
219
220 /* PHY eye window: set all as passing */
221 s->regs[0x100 | (0x68 / 4)] = 0xff;
222 s->regs[0x100 | (0x7c / 4)] = 0xff;
223 s->regs[0x100 | (0x50 / 4)] = 0xfffffff;
224 }
225
aspeed_sdmc_get_ram_size(Object * obj,Visitor * v,const char * name,void * opaque,Error ** errp)226 static void aspeed_sdmc_get_ram_size(Object *obj, Visitor *v, const char *name,
227 void *opaque, Error **errp)
228 {
229 AspeedSDMCState *s = ASPEED_SDMC(obj);
230 int64_t value = s->ram_size;
231
232 visit_type_int(v, name, &value, errp);
233 }
234
aspeed_sdmc_set_ram_size(Object * obj,Visitor * v,const char * name,void * opaque,Error ** errp)235 static void aspeed_sdmc_set_ram_size(Object *obj, Visitor *v, const char *name,
236 void *opaque, Error **errp)
237 {
238 int i;
239 char *sz;
240 int64_t value;
241 AspeedSDMCState *s = ASPEED_SDMC(obj);
242 AspeedSDMCClass *asc = ASPEED_SDMC_GET_CLASS(s);
243
244 if (!visit_type_int(v, name, &value, errp)) {
245 return;
246 }
247
248 for (i = 0; asc->valid_ram_sizes[i]; i++) {
249 if (value == asc->valid_ram_sizes[i]) {
250 s->ram_size = value;
251 return;
252 }
253 }
254
255 sz = size_to_str(value);
256 error_setg(errp, "Invalid RAM size %s", sz);
257 g_free(sz);
258 }
259
aspeed_sdmc_initfn(Object * obj)260 static void aspeed_sdmc_initfn(Object *obj)
261 {
262 object_property_add(obj, "ram-size", "int",
263 aspeed_sdmc_get_ram_size, aspeed_sdmc_set_ram_size,
264 NULL, NULL);
265 }
266
aspeed_sdmc_realize(DeviceState * dev,Error ** errp)267 static void aspeed_sdmc_realize(DeviceState *dev, Error **errp)
268 {
269 SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
270 AspeedSDMCState *s = ASPEED_SDMC(dev);
271 AspeedSDMCClass *asc = ASPEED_SDMC_GET_CLASS(s);
272
273 assert(asc->max_ram_size < 4 * GiB || asc->is_bus64bit);
274
275 if (!s->ram_size) {
276 error_setg(errp, "RAM size is not set");
277 return;
278 }
279
280 s->max_ram_size = asc->max_ram_size;
281
282 memory_region_init_io(&s->iomem, OBJECT(s), &aspeed_sdmc_ops, s,
283 TYPE_ASPEED_SDMC, 0x1000);
284 sysbus_init_mmio(sbd, &s->iomem);
285 }
286
287 static const VMStateDescription vmstate_aspeed_sdmc = {
288 .name = "aspeed.sdmc",
289 .version_id = 2,
290 .minimum_version_id = 2,
291 .fields = (const VMStateField[]) {
292 VMSTATE_UINT32_ARRAY(regs, AspeedSDMCState, ASPEED_SDMC_NR_REGS),
293 VMSTATE_END_OF_LIST()
294 }
295 };
296
297 static Property aspeed_sdmc_properties[] = {
298 DEFINE_PROP_UINT64("max-ram-size", AspeedSDMCState, max_ram_size, 0),
299 DEFINE_PROP_BOOL("unlocked", AspeedSDMCState, unlocked, false),
300 DEFINE_PROP_END_OF_LIST(),
301 };
302
aspeed_sdmc_class_init(ObjectClass * klass,void * data)303 static void aspeed_sdmc_class_init(ObjectClass *klass, void *data)
304 {
305 DeviceClass *dc = DEVICE_CLASS(klass);
306 dc->realize = aspeed_sdmc_realize;
307 device_class_set_legacy_reset(dc, aspeed_sdmc_reset);
308 dc->desc = "ASPEED SDRAM Memory Controller";
309 dc->vmsd = &vmstate_aspeed_sdmc;
310 device_class_set_props(dc, aspeed_sdmc_properties);
311 }
312
313 static const TypeInfo aspeed_sdmc_info = {
314 .name = TYPE_ASPEED_SDMC,
315 .parent = TYPE_SYS_BUS_DEVICE,
316 .instance_size = sizeof(AspeedSDMCState),
317 .instance_init = aspeed_sdmc_initfn,
318 .class_init = aspeed_sdmc_class_init,
319 .class_size = sizeof(AspeedSDMCClass),
320 .abstract = true,
321 };
322
aspeed_sdmc_get_ram_bits(AspeedSDMCState * s)323 static int aspeed_sdmc_get_ram_bits(AspeedSDMCState *s)
324 {
325 AspeedSDMCClass *asc = ASPEED_SDMC_GET_CLASS(s);
326 int i;
327
328 /*
329 * The bitfield value encoding the RAM size is the index of the
330 * possible RAM size array
331 */
332 for (i = 0; asc->valid_ram_sizes[i]; i++) {
333 if (s->ram_size == asc->valid_ram_sizes[i]) {
334 return i;
335 }
336 }
337
338 /*
339 * Invalid RAM sizes should have been excluded when setting the
340 * SoC RAM size.
341 */
342 g_assert_not_reached();
343 }
344
aspeed_2400_sdmc_compute_conf(AspeedSDMCState * s,uint32_t data)345 static uint32_t aspeed_2400_sdmc_compute_conf(AspeedSDMCState *s, uint32_t data)
346 {
347 uint32_t fixed_conf = ASPEED_SDMC_VGA_COMPAT |
348 ASPEED_SDMC_DRAM_SIZE(aspeed_sdmc_get_ram_bits(s));
349
350 /* Make sure readonly bits are kept */
351 data &= ~ASPEED_SDMC_READONLY_MASK;
352
353 return data | fixed_conf;
354 }
355
aspeed_2400_sdmc_write(AspeedSDMCState * s,uint32_t reg,uint32_t data)356 static void aspeed_2400_sdmc_write(AspeedSDMCState *s, uint32_t reg,
357 uint32_t data)
358 {
359 if (reg == R_PROT) {
360 s->regs[reg] =
361 (data == PROT_KEY_UNLOCK) ? PROT_UNLOCKED : PROT_SOFTLOCKED;
362 return;
363 }
364
365 if (!s->regs[R_PROT]) {
366 qemu_log_mask(LOG_GUEST_ERROR, "%s: SDMC is locked!\n", __func__);
367 return;
368 }
369
370 switch (reg) {
371 case R_CONF:
372 data = aspeed_2400_sdmc_compute_conf(s, data);
373 break;
374 default:
375 break;
376 }
377
378 s->regs[reg] = data;
379 }
380
381 static const uint64_t
382 aspeed_2400_ram_sizes[] = { 64 * MiB, 128 * MiB, 256 * MiB, 512 * MiB, 0};
383
aspeed_2400_sdmc_class_init(ObjectClass * klass,void * data)384 static void aspeed_2400_sdmc_class_init(ObjectClass *klass, void *data)
385 {
386 DeviceClass *dc = DEVICE_CLASS(klass);
387 AspeedSDMCClass *asc = ASPEED_SDMC_CLASS(klass);
388
389 dc->desc = "ASPEED 2400 SDRAM Memory Controller";
390 asc->max_ram_size = 512 * MiB;
391 asc->compute_conf = aspeed_2400_sdmc_compute_conf;
392 asc->write = aspeed_2400_sdmc_write;
393 asc->valid_ram_sizes = aspeed_2400_ram_sizes;
394 }
395
396 static const TypeInfo aspeed_2400_sdmc_info = {
397 .name = TYPE_ASPEED_2400_SDMC,
398 .parent = TYPE_ASPEED_SDMC,
399 .class_init = aspeed_2400_sdmc_class_init,
400 };
401
aspeed_2500_sdmc_compute_conf(AspeedSDMCState * s,uint32_t data)402 static uint32_t aspeed_2500_sdmc_compute_conf(AspeedSDMCState *s, uint32_t data)
403 {
404 uint32_t fixed_conf = ASPEED_SDMC_HW_VERSION(1) |
405 ASPEED_SDMC_VGA_APERTURE(ASPEED_SDMC_VGA_64MB) |
406 ASPEED_SDMC_CACHE_INITIAL_DONE |
407 ASPEED_SDMC_DRAM_SIZE(aspeed_sdmc_get_ram_bits(s));
408
409 /* Make sure readonly bits are kept */
410 data &= ~ASPEED_SDMC_AST2500_READONLY_MASK;
411
412 return data | fixed_conf;
413 }
414
aspeed_2500_sdmc_write(AspeedSDMCState * s,uint32_t reg,uint32_t data)415 static void aspeed_2500_sdmc_write(AspeedSDMCState *s, uint32_t reg,
416 uint32_t data)
417 {
418 if (reg == R_PROT) {
419 s->regs[reg] =
420 (data == PROT_KEY_UNLOCK) ? PROT_UNLOCKED : PROT_SOFTLOCKED;
421 return;
422 }
423
424 if (!s->regs[R_PROT]) {
425 qemu_log_mask(LOG_GUEST_ERROR, "%s: SDMC is locked!\n", __func__);
426 return;
427 }
428
429 switch (reg) {
430 case R_CONF:
431 data = aspeed_2500_sdmc_compute_conf(s, data);
432 break;
433 case R_STATUS1:
434 /* Will never return 'busy' */
435 data &= ~PHY_BUSY_STATE;
436 break;
437 case R_ECC_TEST_CTRL:
438 /* Always done, always happy */
439 data |= ECC_TEST_FINISHED;
440 data &= ~ECC_TEST_FAIL;
441 break;
442 default:
443 break;
444 }
445
446 s->regs[reg] = data;
447 }
448
449 static const uint64_t
450 aspeed_2500_ram_sizes[] = { 128 * MiB, 256 * MiB, 512 * MiB, 1024 * MiB, 0};
451
aspeed_2500_sdmc_class_init(ObjectClass * klass,void * data)452 static void aspeed_2500_sdmc_class_init(ObjectClass *klass, void *data)
453 {
454 DeviceClass *dc = DEVICE_CLASS(klass);
455 AspeedSDMCClass *asc = ASPEED_SDMC_CLASS(klass);
456
457 dc->desc = "ASPEED 2500 SDRAM Memory Controller";
458 asc->max_ram_size = 1 * GiB;
459 asc->compute_conf = aspeed_2500_sdmc_compute_conf;
460 asc->write = aspeed_2500_sdmc_write;
461 asc->valid_ram_sizes = aspeed_2500_ram_sizes;
462 }
463
464 static const TypeInfo aspeed_2500_sdmc_info = {
465 .name = TYPE_ASPEED_2500_SDMC,
466 .parent = TYPE_ASPEED_SDMC,
467 .class_init = aspeed_2500_sdmc_class_init,
468 };
469
aspeed_2600_sdmc_compute_conf(AspeedSDMCState * s,uint32_t data)470 static uint32_t aspeed_2600_sdmc_compute_conf(AspeedSDMCState *s, uint32_t data)
471 {
472 uint32_t fixed_conf = ASPEED_SDMC_HW_VERSION(3) |
473 ASPEED_SDMC_VGA_APERTURE(ASPEED_SDMC_VGA_64MB) |
474 ASPEED_SDMC_DRAM_SIZE(aspeed_sdmc_get_ram_bits(s));
475
476 /* Make sure readonly bits are kept (use ast2500 mask) */
477 data &= ~ASPEED_SDMC_AST2500_READONLY_MASK;
478
479 return data | fixed_conf;
480 }
481
aspeed_2600_sdmc_write(AspeedSDMCState * s,uint32_t reg,uint32_t data)482 static void aspeed_2600_sdmc_write(AspeedSDMCState *s, uint32_t reg,
483 uint32_t data)
484 {
485 /* Unprotected registers */
486 switch (reg) {
487 case R_ISR:
488 case R_MCR6C:
489 case R_TEST_START_LEN:
490 case R_TEST_FAIL_DQ:
491 case R_TEST_INIT_VAL:
492 case R_DRAM_SW:
493 case R_DRAM_TIME:
494 case R_ECC_ERR_INJECT:
495 s->regs[reg] = data;
496 return;
497 }
498
499 if (s->regs[R_PROT] == PROT_HARDLOCKED) {
500 qemu_log_mask(LOG_GUEST_ERROR,
501 "%s: SDMC is locked until system reset!\n",
502 __func__);
503 return;
504 }
505
506 if (reg != R_PROT && s->regs[R_PROT] == PROT_SOFTLOCKED) {
507 qemu_log_mask(LOG_GUEST_ERROR,
508 "%s: SDMC is locked! (write to MCR%02x blocked)\n",
509 __func__, reg * 4);
510 return;
511 }
512
513 switch (reg) {
514 case R_PROT:
515 if (data == PROT_KEY_UNLOCK) {
516 data = PROT_UNLOCKED;
517 } else if (data == PROT_KEY_HARDLOCK) {
518 data = PROT_HARDLOCKED;
519 } else {
520 data = PROT_SOFTLOCKED;
521 }
522 break;
523 case R_CONF:
524 data = aspeed_2600_sdmc_compute_conf(s, data);
525 break;
526 case R_STATUS1:
527 /* Will never return 'busy'. 'lock status' is always set */
528 data &= ~PHY_BUSY_STATE;
529 data |= PHY_PLL_LOCK_STATUS;
530 break;
531 case R_ECC_TEST_CTRL:
532 /* Always done, always happy */
533 data |= ECC_TEST_FINISHED;
534 data &= ~ECC_TEST_FAIL;
535 break;
536 default:
537 break;
538 }
539
540 s->regs[reg] = data;
541 }
542
543 static const uint64_t
544 aspeed_2600_ram_sizes[] = { 256 * MiB, 512 * MiB, 1024 * MiB, 2048 * MiB, 0};
545
aspeed_2600_sdmc_class_init(ObjectClass * klass,void * data)546 static void aspeed_2600_sdmc_class_init(ObjectClass *klass, void *data)
547 {
548 DeviceClass *dc = DEVICE_CLASS(klass);
549 AspeedSDMCClass *asc = ASPEED_SDMC_CLASS(klass);
550
551 dc->desc = "ASPEED 2600 SDRAM Memory Controller";
552 asc->max_ram_size = 2 * GiB;
553 asc->compute_conf = aspeed_2600_sdmc_compute_conf;
554 asc->write = aspeed_2600_sdmc_write;
555 asc->valid_ram_sizes = aspeed_2600_ram_sizes;
556 }
557
558 static const TypeInfo aspeed_2600_sdmc_info = {
559 .name = TYPE_ASPEED_2600_SDMC,
560 .parent = TYPE_ASPEED_SDMC,
561 .class_init = aspeed_2600_sdmc_class_init,
562 };
563
aspeed_2700_sdmc_reset(DeviceState * dev)564 static void aspeed_2700_sdmc_reset(DeviceState *dev)
565 {
566 AspeedSDMCState *s = ASPEED_SDMC(dev);
567 AspeedSDMCClass *asc = ASPEED_SDMC_GET_CLASS(s);
568
569 memset(s->regs, 0, sizeof(s->regs));
570
571 /* Set ram size bit and defaults values */
572 s->regs[R_MAIN_CONF] = asc->compute_conf(s, 0);
573
574 if (s->unlocked) {
575 s->regs[R_2700_PROT] = PROT_UNLOCKED;
576 }
577 }
578
aspeed_2700_sdmc_compute_conf(AspeedSDMCState * s,uint32_t data)579 static uint32_t aspeed_2700_sdmc_compute_conf(AspeedSDMCState *s, uint32_t data)
580 {
581 uint32_t fixed_conf = ASPEED_SDMC_AST2700_PAGE_MATCHING_ENABLE |
582 ASPEED_SDMC_AST2700_DRAM_SIZE(aspeed_sdmc_get_ram_bits(s));
583
584 /* Make sure readonly bits are kept */
585 data &= ~ASPEED_SDMC_AST2700_READONLY_MASK;
586
587 return data | fixed_conf;
588 }
589
aspeed_2700_sdmc_write(AspeedSDMCState * s,uint32_t reg,uint32_t data)590 static void aspeed_2700_sdmc_write(AspeedSDMCState *s, uint32_t reg,
591 uint32_t data)
592 {
593 /* Unprotected registers */
594 switch (reg) {
595 case R_INT_STATUS:
596 case R_INT_CLEAR:
597 case R_INT_MASK:
598 case R_ERR_STATUS:
599 case R_ECC_FAIL_STATUS:
600 case R_ECC_FAIL_ADDR:
601 case R_PROT_REGION_LOCK_STATUS:
602 case R_TEST_FAIL_ADDR:
603 case R_TEST_FAIL_D0:
604 case R_TEST_FAIL_D1:
605 case R_TEST_FAIL_D2:
606 case R_TEST_FAIL_D3:
607 case R_DBG_STATUS:
608 case R_PHY_INTERFACE_STATUS:
609 case R_GRAPHIC_MEM_BASE_ADDR:
610 case R_PORT0_INTERFACE_MONITOR0:
611 case R_PORT0_INTERFACE_MONITOR1:
612 case R_PORT0_INTERFACE_MONITOR2:
613 case R_PORT1_INTERFACE_MONITOR0:
614 case R_PORT1_INTERFACE_MONITOR1:
615 case R_PORT1_INTERFACE_MONITOR2:
616 case R_PORT2_INTERFACE_MONITOR0:
617 case R_PORT2_INTERFACE_MONITOR1:
618 case R_PORT2_INTERFACE_MONITOR2:
619 case R_PORT3_INTERFACE_MONITOR0:
620 case R_PORT3_INTERFACE_MONITOR1:
621 case R_PORT3_INTERFACE_MONITOR2:
622 case R_PORT4_INTERFACE_MONITOR0:
623 case R_PORT4_INTERFACE_MONITOR1:
624 case R_PORT4_INTERFACE_MONITOR2:
625 case R_PORT5_INTERFACE_MONITOR0:
626 case R_PORT5_INTERFACE_MONITOR1:
627 case R_PORT5_INTERFACE_MONITOR2:
628 s->regs[reg] = data;
629 return;
630 }
631
632 if (s->regs[R_2700_PROT] == PROT_HARDLOCKED) {
633 qemu_log_mask(LOG_GUEST_ERROR,
634 "%s: SDMC is locked until system reset!\n",
635 __func__);
636 return;
637 }
638
639 if (reg != R_2700_PROT && s->regs[R_2700_PROT] == PROT_SOFTLOCKED) {
640 qemu_log_mask(LOG_GUEST_ERROR,
641 "%s: SDMC is locked! (write to MCR%02x blocked)\n",
642 __func__, reg * 4);
643 return;
644 }
645
646 switch (reg) {
647 case R_2700_PROT:
648 if (data == PROT_2700_KEY_UNLOCK) {
649 data = PROT_UNLOCKED;
650 } else if (data == PROT_KEY_HARDLOCK) {
651 data = PROT_HARDLOCKED;
652 } else {
653 data = PROT_SOFTLOCKED;
654 }
655 break;
656 case R_MAIN_CONF:
657 data = aspeed_2700_sdmc_compute_conf(s, data);
658 break;
659 case R_MAIN_STATUS:
660 /* Will never return 'busy'. */
661 data &= ~PHY_BUSY_STATE;
662 break;
663 default:
664 break;
665 }
666
667 s->regs[reg] = data;
668 }
669
670 static const uint64_t
671 aspeed_2700_ram_sizes[] = { 256 * MiB, 512 * MiB, 1024 * MiB,
672 2048 * MiB, 4096 * MiB, 8192 * MiB, 0};
673
aspeed_2700_sdmc_class_init(ObjectClass * klass,void * data)674 static void aspeed_2700_sdmc_class_init(ObjectClass *klass, void *data)
675 {
676 DeviceClass *dc = DEVICE_CLASS(klass);
677 AspeedSDMCClass *asc = ASPEED_SDMC_CLASS(klass);
678
679 dc->desc = "ASPEED 2700 SDRAM Memory Controller";
680 device_class_set_legacy_reset(dc, aspeed_2700_sdmc_reset);
681
682 asc->is_bus64bit = true;
683 asc->max_ram_size = 8 * GiB;
684 asc->compute_conf = aspeed_2700_sdmc_compute_conf;
685 asc->write = aspeed_2700_sdmc_write;
686 asc->valid_ram_sizes = aspeed_2700_ram_sizes;
687 }
688
689 static const TypeInfo aspeed_2700_sdmc_info = {
690 .name = TYPE_ASPEED_2700_SDMC,
691 .parent = TYPE_ASPEED_SDMC,
692 .class_init = aspeed_2700_sdmc_class_init,
693 };
694
aspeed_sdmc_register_types(void)695 static void aspeed_sdmc_register_types(void)
696 {
697 type_register_static(&aspeed_sdmc_info);
698 type_register_static(&aspeed_2400_sdmc_info);
699 type_register_static(&aspeed_2500_sdmc_info);
700 type_register_static(&aspeed_2600_sdmc_info);
701 type_register_static(&aspeed_2700_sdmc_info);
702 }
703
704 type_init(aspeed_sdmc_register_types);
705