1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Renesas SoC Identification
4 *
5 * Copyright (C) 2014-2016 Glider bvba
6 */
7
8 #include <linux/io.h>
9 #include <linux/of.h>
10 #include <linux/of_address.h>
11 #include <linux/slab.h>
12 #include <linux/string.h>
13 #include <linux/sys_soc.h>
14
15 struct renesas_family {
16 const char name[16];
17 u32 reg; /* CCCR or PRR, if not in DT */
18 };
19
20 static const struct renesas_family fam_rcar_gen1 __initconst __maybe_unused = {
21 .name = "R-Car Gen1",
22 .reg = 0xff000044, /* PRR (Product Register) */
23 };
24
25 static const struct renesas_family fam_rcar_gen2 __initconst __maybe_unused = {
26 .name = "R-Car Gen2",
27 .reg = 0xff000044, /* PRR (Product Register) */
28 };
29
30 static const struct renesas_family fam_rcar_gen3 __initconst __maybe_unused = {
31 .name = "R-Car Gen3",
32 .reg = 0xfff00044, /* PRR (Product Register) */
33 };
34
35 static const struct renesas_family fam_rcar_gen4 __initconst __maybe_unused = {
36 .name = "R-Car Gen4",
37 };
38
39 static const struct renesas_family fam_rmobile __initconst __maybe_unused = {
40 .name = "R-Mobile",
41 .reg = 0xe600101c, /* CCCR (Common Chip Code Register) */
42 };
43
44 static const struct renesas_family fam_rza1 __initconst __maybe_unused = {
45 .name = "RZ/A1",
46 };
47
48 static const struct renesas_family fam_rza2 __initconst __maybe_unused = {
49 .name = "RZ/A2",
50 };
51
52 static const struct renesas_family fam_rzfive __initconst __maybe_unused = {
53 .name = "RZ/Five",
54 };
55
56 static const struct renesas_family fam_rzg1 __initconst __maybe_unused = {
57 .name = "RZ/G1",
58 .reg = 0xff000044, /* PRR (Product Register) */
59 };
60
61 static const struct renesas_family fam_rzg2 __initconst __maybe_unused = {
62 .name = "RZ/G2",
63 .reg = 0xfff00044, /* PRR (Product Register) */
64 };
65
66 static const struct renesas_family fam_rzg2l __initconst __maybe_unused = {
67 .name = "RZ/G2L",
68 };
69
70 static const struct renesas_family fam_rzg2ul __initconst __maybe_unused = {
71 .name = "RZ/G2UL",
72 };
73
74 static const struct renesas_family fam_rzg3s __initconst __maybe_unused = {
75 .name = "RZ/G3S",
76 };
77
78 static const struct renesas_family fam_rzv2h __initconst __maybe_unused = {
79 .name = "RZ/V2H",
80 };
81
82 static const struct renesas_family fam_rzv2l __initconst __maybe_unused = {
83 .name = "RZ/V2L",
84 };
85
86 static const struct renesas_family fam_rzv2m __initconst __maybe_unused = {
87 .name = "RZ/V2M",
88 };
89
90 static const struct renesas_family fam_shmobile __initconst __maybe_unused = {
91 .name = "SH-Mobile",
92 .reg = 0xe600101c, /* CCCR (Common Chip Code Register) */
93 };
94
95 struct renesas_soc {
96 const struct renesas_family *family;
97 u32 id;
98 };
99
100 static const struct renesas_soc soc_rz_a1h __initconst __maybe_unused = {
101 .family = &fam_rza1,
102 };
103
104 static const struct renesas_soc soc_rz_a2m __initconst __maybe_unused = {
105 .family = &fam_rza2,
106 .id = 0x3b,
107 };
108
109 static const struct renesas_soc soc_rmobile_ape6 __initconst __maybe_unused = {
110 .family = &fam_rmobile,
111 .id = 0x3f,
112 };
113
114 static const struct renesas_soc soc_rmobile_a1 __initconst __maybe_unused = {
115 .family = &fam_rmobile,
116 .id = 0x40,
117 };
118
119 static const struct renesas_soc soc_rz_five __initconst __maybe_unused = {
120 .family = &fam_rzfive,
121 .id = 0x847c447,
122 };
123
124 static const struct renesas_soc soc_rz_g1h __initconst __maybe_unused = {
125 .family = &fam_rzg1,
126 .id = 0x45,
127 };
128
129 static const struct renesas_soc soc_rz_g1m __initconst __maybe_unused = {
130 .family = &fam_rzg1,
131 .id = 0x47,
132 };
133
134 static const struct renesas_soc soc_rz_g1n __initconst __maybe_unused = {
135 .family = &fam_rzg1,
136 .id = 0x4b,
137 };
138
139 static const struct renesas_soc soc_rz_g1e __initconst __maybe_unused = {
140 .family = &fam_rzg1,
141 .id = 0x4c,
142 };
143
144 static const struct renesas_soc soc_rz_g1c __initconst __maybe_unused = {
145 .family = &fam_rzg1,
146 .id = 0x53,
147 };
148
149 static const struct renesas_soc soc_rz_g2m __initconst __maybe_unused = {
150 .family = &fam_rzg2,
151 .id = 0x52,
152 };
153
154 static const struct renesas_soc soc_rz_g2n __initconst __maybe_unused = {
155 .family = &fam_rzg2,
156 .id = 0x55,
157 };
158
159 static const struct renesas_soc soc_rz_g2e __initconst __maybe_unused = {
160 .family = &fam_rzg2,
161 .id = 0x57,
162 };
163
164 static const struct renesas_soc soc_rz_g2h __initconst __maybe_unused = {
165 .family = &fam_rzg2,
166 .id = 0x4f,
167 };
168
169 static const struct renesas_soc soc_rz_g2l __initconst __maybe_unused = {
170 .family = &fam_rzg2l,
171 .id = 0x841c447,
172 };
173
174 static const struct renesas_soc soc_rz_g2ul __initconst __maybe_unused = {
175 .family = &fam_rzg2ul,
176 .id = 0x8450447,
177 };
178
179 static const struct renesas_soc soc_rz_g3s __initconst __maybe_unused = {
180 .family = &fam_rzg3s,
181 .id = 0x85e0447,
182 };
183
184 static const struct renesas_soc soc_rz_v2h __initconst __maybe_unused = {
185 .family = &fam_rzv2h,
186 .id = 0x847a447,
187 };
188
189 static const struct renesas_soc soc_rz_v2l __initconst __maybe_unused = {
190 .family = &fam_rzv2l,
191 .id = 0x8447447,
192 };
193
194 static const struct renesas_soc soc_rz_v2m __initconst __maybe_unused = {
195 .family = &fam_rzv2m,
196 };
197
198 static const struct renesas_soc soc_rcar_m1a __initconst __maybe_unused = {
199 .family = &fam_rcar_gen1,
200 };
201
202 static const struct renesas_soc soc_rcar_h1 __initconst __maybe_unused = {
203 .family = &fam_rcar_gen1,
204 .id = 0x3b,
205 };
206
207 static const struct renesas_soc soc_rcar_h2 __initconst __maybe_unused = {
208 .family = &fam_rcar_gen2,
209 .id = 0x45,
210 };
211
212 static const struct renesas_soc soc_rcar_m2_w __initconst __maybe_unused = {
213 .family = &fam_rcar_gen2,
214 .id = 0x47,
215 };
216
217 static const struct renesas_soc soc_rcar_v2h __initconst __maybe_unused = {
218 .family = &fam_rcar_gen2,
219 .id = 0x4a,
220 };
221
222 static const struct renesas_soc soc_rcar_m2_n __initconst __maybe_unused = {
223 .family = &fam_rcar_gen2,
224 .id = 0x4b,
225 };
226
227 static const struct renesas_soc soc_rcar_e2 __initconst __maybe_unused = {
228 .family = &fam_rcar_gen2,
229 .id = 0x4c,
230 };
231
232 static const struct renesas_soc soc_rcar_h3 __initconst __maybe_unused = {
233 .family = &fam_rcar_gen3,
234 .id = 0x4f,
235 };
236
237 static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = {
238 .family = &fam_rcar_gen3,
239 .id = 0x52,
240 };
241
242 static const struct renesas_soc soc_rcar_m3_n __initconst __maybe_unused = {
243 .family = &fam_rcar_gen3,
244 .id = 0x55,
245 };
246
247 static const struct renesas_soc soc_rcar_v3m __initconst __maybe_unused = {
248 .family = &fam_rcar_gen3,
249 .id = 0x54,
250 };
251
252 static const struct renesas_soc soc_rcar_v3h __initconst __maybe_unused = {
253 .family = &fam_rcar_gen3,
254 .id = 0x56,
255 };
256
257 static const struct renesas_soc soc_rcar_e3 __initconst __maybe_unused = {
258 .family = &fam_rcar_gen3,
259 .id = 0x57,
260 };
261
262 static const struct renesas_soc soc_rcar_d3 __initconst __maybe_unused = {
263 .family = &fam_rcar_gen3,
264 .id = 0x58,
265 };
266
267 static const struct renesas_soc soc_rcar_v3u __initconst __maybe_unused = {
268 .family = &fam_rcar_gen4,
269 .id = 0x59,
270 };
271
272 static const struct renesas_soc soc_rcar_s4 __initconst __maybe_unused = {
273 .family = &fam_rcar_gen4,
274 .id = 0x5a,
275 };
276
277 static const struct renesas_soc soc_rcar_v4h __initconst __maybe_unused = {
278 .family = &fam_rcar_gen4,
279 .id = 0x5c,
280 };
281
282 static const struct renesas_soc soc_rcar_v4m __initconst __maybe_unused = {
283 .family = &fam_rcar_gen4,
284 .id = 0x5d,
285 };
286
287 static const struct renesas_soc soc_shmobile_ag5 __initconst __maybe_unused = {
288 .family = &fam_shmobile,
289 .id = 0x37,
290 };
291
292
293 static const struct of_device_id renesas_socs[] __initconst __maybe_unused = {
294 #ifdef CONFIG_ARCH_R7S72100
295 { .compatible = "renesas,r7s72100", .data = &soc_rz_a1h },
296 #endif
297 #ifdef CONFIG_ARCH_R7S9210
298 { .compatible = "renesas,r7s9210", .data = &soc_rz_a2m },
299 #endif
300 #ifdef CONFIG_ARCH_R8A73A4
301 { .compatible = "renesas,r8a73a4", .data = &soc_rmobile_ape6 },
302 #endif
303 #ifdef CONFIG_ARCH_R8A7740
304 { .compatible = "renesas,r8a7740", .data = &soc_rmobile_a1 },
305 #endif
306 #ifdef CONFIG_ARCH_R8A7742
307 { .compatible = "renesas,r8a7742", .data = &soc_rz_g1h },
308 #endif
309 #ifdef CONFIG_ARCH_R8A7743
310 { .compatible = "renesas,r8a7743", .data = &soc_rz_g1m },
311 #endif
312 #ifdef CONFIG_ARCH_R8A7744
313 { .compatible = "renesas,r8a7744", .data = &soc_rz_g1n },
314 #endif
315 #ifdef CONFIG_ARCH_R8A7745
316 { .compatible = "renesas,r8a7745", .data = &soc_rz_g1e },
317 #endif
318 #ifdef CONFIG_ARCH_R8A77470
319 { .compatible = "renesas,r8a77470", .data = &soc_rz_g1c },
320 #endif
321 #ifdef CONFIG_ARCH_R8A774A1
322 { .compatible = "renesas,r8a774a1", .data = &soc_rz_g2m },
323 #endif
324 #ifdef CONFIG_ARCH_R8A774B1
325 { .compatible = "renesas,r8a774b1", .data = &soc_rz_g2n },
326 #endif
327 #ifdef CONFIG_ARCH_R8A774C0
328 { .compatible = "renesas,r8a774c0", .data = &soc_rz_g2e },
329 #endif
330 #ifdef CONFIG_ARCH_R8A774E1
331 { .compatible = "renesas,r8a774e1", .data = &soc_rz_g2h },
332 #endif
333 #ifdef CONFIG_ARCH_R8A7778
334 { .compatible = "renesas,r8a7778", .data = &soc_rcar_m1a },
335 #endif
336 #ifdef CONFIG_ARCH_R8A7779
337 { .compatible = "renesas,r8a7779", .data = &soc_rcar_h1 },
338 #endif
339 #ifdef CONFIG_ARCH_R8A7790
340 { .compatible = "renesas,r8a7790", .data = &soc_rcar_h2 },
341 #endif
342 #ifdef CONFIG_ARCH_R8A7791
343 { .compatible = "renesas,r8a7791", .data = &soc_rcar_m2_w },
344 #endif
345 #ifdef CONFIG_ARCH_R8A7792
346 { .compatible = "renesas,r8a7792", .data = &soc_rcar_v2h },
347 #endif
348 #ifdef CONFIG_ARCH_R8A7793
349 { .compatible = "renesas,r8a7793", .data = &soc_rcar_m2_n },
350 #endif
351 #ifdef CONFIG_ARCH_R8A7794
352 { .compatible = "renesas,r8a7794", .data = &soc_rcar_e2 },
353 #endif
354 #ifdef CONFIG_ARCH_R8A77951
355 { .compatible = "renesas,r8a7795", .data = &soc_rcar_h3 },
356 { .compatible = "renesas,r8a779m0", .data = &soc_rcar_h3 },
357 { .compatible = "renesas,r8a779m1", .data = &soc_rcar_h3 },
358 { .compatible = "renesas,r8a779m8", .data = &soc_rcar_h3 },
359 { .compatible = "renesas,r8a779mb", .data = &soc_rcar_h3 },
360 #endif
361 #ifdef CONFIG_ARCH_R8A77960
362 { .compatible = "renesas,r8a7796", .data = &soc_rcar_m3_w },
363 #endif
364 #ifdef CONFIG_ARCH_R8A77961
365 { .compatible = "renesas,r8a77961", .data = &soc_rcar_m3_w },
366 { .compatible = "renesas,r8a779m2", .data = &soc_rcar_m3_w },
367 { .compatible = "renesas,r8a779m3", .data = &soc_rcar_m3_w },
368 #endif
369 #ifdef CONFIG_ARCH_R8A77965
370 { .compatible = "renesas,r8a77965", .data = &soc_rcar_m3_n },
371 { .compatible = "renesas,r8a779m4", .data = &soc_rcar_m3_n },
372 { .compatible = "renesas,r8a779m5", .data = &soc_rcar_m3_n },
373 #endif
374 #ifdef CONFIG_ARCH_R8A77970
375 { .compatible = "renesas,r8a77970", .data = &soc_rcar_v3m },
376 #endif
377 #ifdef CONFIG_ARCH_R8A77980
378 { .compatible = "renesas,r8a77980", .data = &soc_rcar_v3h },
379 #endif
380 #ifdef CONFIG_ARCH_R8A77990
381 { .compatible = "renesas,r8a77990", .data = &soc_rcar_e3 },
382 { .compatible = "renesas,r8a779m6", .data = &soc_rcar_e3 },
383 #endif
384 #ifdef CONFIG_ARCH_R8A77995
385 { .compatible = "renesas,r8a77995", .data = &soc_rcar_d3 },
386 { .compatible = "renesas,r8a779m7", .data = &soc_rcar_d3 },
387 #endif
388 #ifdef CONFIG_ARCH_R8A779A0
389 { .compatible = "renesas,r8a779a0", .data = &soc_rcar_v3u },
390 #endif
391 #ifdef CONFIG_ARCH_R8A779F0
392 { .compatible = "renesas,r8a779f0", .data = &soc_rcar_s4 },
393 #endif
394 #ifdef CONFIG_ARCH_R8A779G0
395 { .compatible = "renesas,r8a779g0", .data = &soc_rcar_v4h },
396 #endif
397 #ifdef CONFIG_ARCH_R8A779H0
398 { .compatible = "renesas,r8a779h0", .data = &soc_rcar_v4m },
399 #endif
400 #ifdef CONFIG_ARCH_R9A07G043
401 #ifdef CONFIG_RISCV
402 { .compatible = "renesas,r9a07g043", .data = &soc_rz_five },
403 #else
404 { .compatible = "renesas,r9a07g043", .data = &soc_rz_g2ul },
405 #endif
406 #endif
407 #ifdef CONFIG_ARCH_R9A07G044
408 { .compatible = "renesas,r9a07g044", .data = &soc_rz_g2l },
409 #endif
410 #ifdef CONFIG_ARCH_R9A07G054
411 { .compatible = "renesas,r9a07g054", .data = &soc_rz_v2l },
412 #endif
413 #ifdef CONFIG_ARCH_R9A08G045
414 { .compatible = "renesas,r9a08g045", .data = &soc_rz_g3s },
415 #endif
416 #ifdef CONFIG_ARCH_R9A09G011
417 { .compatible = "renesas,r9a09g011", .data = &soc_rz_v2m },
418 #endif
419 #ifdef CONFIG_ARCH_R9A09G057
420 { .compatible = "renesas,r9a09g057", .data = &soc_rz_v2h },
421 #endif
422 #ifdef CONFIG_ARCH_SH73A0
423 { .compatible = "renesas,sh73a0", .data = &soc_shmobile_ag5 },
424 #endif
425 { /* sentinel */ }
426 };
427
428 struct renesas_id {
429 unsigned int offset;
430 u32 mask;
431 };
432
433 static const struct renesas_id id_bsid __initconst = {
434 .offset = 0,
435 .mask = 0xff0000,
436 /*
437 * TODO: Upper 4 bits of BSID are for chip version, but the format is
438 * not known at this time so we don't know how to specify eshi and eslo
439 */
440 };
441
442 static const struct renesas_id id_rzg2l __initconst = {
443 .offset = 0xa04,
444 .mask = 0xfffffff,
445 };
446
447 static const struct renesas_id id_rzv2h __initconst = {
448 .offset = 0x304,
449 .mask = 0xfffffff,
450 };
451
452 static const struct renesas_id id_rzv2m __initconst = {
453 .offset = 0x104,
454 .mask = 0xff,
455 };
456
457 static const struct renesas_id id_prr __initconst = {
458 .offset = 0,
459 .mask = 0xff00,
460 };
461
462 static const struct of_device_id renesas_ids[] __initconst = {
463 { .compatible = "renesas,bsid", .data = &id_bsid },
464 { .compatible = "renesas,r9a07g043-sysc", .data = &id_rzg2l },
465 { .compatible = "renesas,r9a07g044-sysc", .data = &id_rzg2l },
466 { .compatible = "renesas,r9a07g054-sysc", .data = &id_rzg2l },
467 { .compatible = "renesas,r9a08g045-sysc", .data = &id_rzg2l },
468 { .compatible = "renesas,r9a09g011-sys", .data = &id_rzv2m },
469 { .compatible = "renesas,r9a09g057-sys", .data = &id_rzv2h },
470 { .compatible = "renesas,prr", .data = &id_prr },
471 { /* sentinel */ }
472 };
473
renesas_soc_init(void)474 static int __init renesas_soc_init(void)
475 {
476 struct soc_device_attribute *soc_dev_attr;
477 unsigned int product, eshi = 0, eslo;
478 const struct renesas_family *family;
479 const struct of_device_id *match;
480 const struct renesas_soc *soc;
481 const struct renesas_id *id;
482 void __iomem *chipid = NULL;
483 const char *rev_prefix = "";
484 struct soc_device *soc_dev;
485 struct device_node *np;
486 const char *soc_id;
487 int ret;
488
489 match = of_match_node(renesas_socs, of_root);
490 if (!match)
491 return -ENODEV;
492
493 soc_id = strchr(match->compatible, ',') + 1;
494 soc = match->data;
495 family = soc->family;
496
497 np = of_find_matching_node_and_match(NULL, renesas_ids, &match);
498 if (np) {
499 id = match->data;
500 chipid = of_iomap(np, 0);
501 of_node_put(np);
502 } else if (soc->id && family->reg) {
503 /* Try hardcoded CCCR/PRR fallback */
504 id = &id_prr;
505 chipid = ioremap(family->reg, 4);
506 }
507
508 soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
509 if (!soc_dev_attr) {
510 if (chipid)
511 iounmap(chipid);
512 return -ENOMEM;
513 }
514
515 soc_dev_attr->family = kstrdup_const(family->name, GFP_KERNEL);
516 soc_dev_attr->soc_id = kstrdup_const(soc_id, GFP_KERNEL);
517
518 if (chipid) {
519 product = readl(chipid + id->offset);
520 iounmap(chipid);
521
522 if (id == &id_prr) {
523 /* R-Car M3-W ES1.1 incorrectly identifies as ES2.0 */
524 if ((product & 0x7fff) == 0x5210)
525 product ^= 0x11;
526 /* R-Car M3-W ES1.3 incorrectly identifies as ES2.1 */
527 if ((product & 0x7fff) == 0x5211)
528 product ^= 0x12;
529
530 eshi = ((product >> 4) & 0x0f) + 1;
531 eslo = product & 0xf;
532 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "ES%u.%u",
533 eshi, eslo);
534 } else if (id == &id_rzg2l || id == &id_rzv2h) {
535 eshi = ((product >> 28) & 0x0f);
536 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%u",
537 eshi);
538 rev_prefix = "Rev ";
539 } else if (id == &id_rzv2m) {
540 eshi = ((product >> 4) & 0x0f);
541 eslo = product & 0xf;
542 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%u.%u",
543 eshi, eslo);
544 }
545
546 if (soc->id &&
547 ((product & id->mask) >> __ffs(id->mask)) != soc->id) {
548 pr_warn("SoC mismatch (product = 0x%x)\n", product);
549 ret = -ENODEV;
550 goto free_soc_dev_attr;
551 }
552 }
553
554 pr_info("Detected Renesas %s %s %s%s\n", soc_dev_attr->family,
555 soc_dev_attr->soc_id, rev_prefix, soc_dev_attr->revision ?: "");
556
557 soc_dev = soc_device_register(soc_dev_attr);
558 if (IS_ERR(soc_dev)) {
559 ret = PTR_ERR(soc_dev);
560 goto free_soc_dev_attr;
561 }
562
563 return 0;
564
565 free_soc_dev_attr:
566 kfree(soc_dev_attr->revision);
567 kfree_const(soc_dev_attr->soc_id);
568 kfree_const(soc_dev_attr->family);
569 kfree(soc_dev_attr);
570 return ret;
571 }
572 early_initcall(renesas_soc_init);
573