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/bitfield.h>
9 #include <linux/io.h>
10 #include <linux/of.h>
11 #include <linux/of_address.h>
12 #include <linux/slab.h>
13 #include <linux/string.h>
14 #include <linux/sys_soc.h>
15
16 struct renesas_family {
17 const char name[16];
18 u32 reg; /* CCCR or PRR, if not in DT */
19 };
20
21 static const struct renesas_family fam_rcar_gen1 __initconst __maybe_unused = {
22 .name = "R-Car Gen1",
23 .reg = 0xff000044, /* PRR (Product Register) */
24 };
25
26 static const struct renesas_family fam_rcar_gen2 __initconst __maybe_unused = {
27 .name = "R-Car Gen2",
28 .reg = 0xff000044, /* PRR (Product Register) */
29 };
30
31 static const struct renesas_family fam_rcar_gen3 __initconst __maybe_unused = {
32 .name = "R-Car Gen3",
33 .reg = 0xfff00044, /* PRR (Product Register) */
34 };
35
36 static const struct renesas_family fam_rcar_gen4 __initconst __maybe_unused = {
37 .name = "R-Car Gen4",
38 };
39
40 static const struct renesas_family fam_rcar_gen5 __initconst __maybe_unused = {
41 .name = "R-Car Gen5",
42 };
43
44 static const struct renesas_family fam_rmobile __initconst __maybe_unused = {
45 .name = "R-Mobile",
46 .reg = 0xe600101c, /* CCCR (Common Chip Code Register) */
47 };
48
49 static const struct renesas_family fam_rza1 __initconst __maybe_unused = {
50 .name = "RZ/A1",
51 };
52
53 static const struct renesas_family fam_rza2 __initconst __maybe_unused = {
54 .name = "RZ/A2",
55 };
56
57 static const struct renesas_family fam_rzfive __initconst __maybe_unused = {
58 .name = "RZ/Five",
59 };
60
61 static const struct renesas_family fam_rzg1 __initconst __maybe_unused = {
62 .name = "RZ/G1",
63 .reg = 0xff000044, /* PRR (Product Register) */
64 };
65
66 static const struct renesas_family fam_rzg2 __initconst __maybe_unused = {
67 .name = "RZ/G2",
68 .reg = 0xfff00044, /* PRR (Product Register) */
69 };
70
71 static const struct renesas_family fam_rzg2l __initconst __maybe_unused = {
72 .name = "RZ/G2L",
73 };
74
75 static const struct renesas_family fam_rzg2ul __initconst __maybe_unused = {
76 .name = "RZ/G2UL",
77 };
78
79 static const struct renesas_family fam_rzv2l __initconst __maybe_unused = {
80 .name = "RZ/V2L",
81 };
82
83 static const struct renesas_family fam_rzv2m __initconst __maybe_unused = {
84 .name = "RZ/V2M",
85 };
86
87 static const struct renesas_family fam_shmobile __initconst __maybe_unused = {
88 .name = "SH-Mobile",
89 .reg = 0xe600101c, /* CCCR (Common Chip Code Register) */
90 };
91
92 struct renesas_soc {
93 const struct renesas_family *family;
94 u32 id;
95 };
96
97 static const struct renesas_soc soc_rz_a1h __initconst __maybe_unused = {
98 .family = &fam_rza1,
99 };
100
101 static const struct renesas_soc soc_rz_a2m __initconst __maybe_unused = {
102 .family = &fam_rza2,
103 .id = 0x3b,
104 };
105
106 static const struct renesas_soc soc_rmobile_ape6 __initconst __maybe_unused = {
107 .family = &fam_rmobile,
108 .id = 0x3f,
109 };
110
111 static const struct renesas_soc soc_rmobile_a1 __initconst __maybe_unused = {
112 .family = &fam_rmobile,
113 .id = 0x40,
114 };
115
116 static const struct renesas_soc soc_rz_five __initconst __maybe_unused = {
117 .family = &fam_rzfive,
118 .id = 0x847c447,
119 };
120
121 static const struct renesas_soc soc_rz_g1h __initconst __maybe_unused = {
122 .family = &fam_rzg1,
123 .id = 0x45,
124 };
125
126 static const struct renesas_soc soc_rz_g1m __initconst __maybe_unused = {
127 .family = &fam_rzg1,
128 .id = 0x47,
129 };
130
131 static const struct renesas_soc soc_rz_g1n __initconst __maybe_unused = {
132 .family = &fam_rzg1,
133 .id = 0x4b,
134 };
135
136 static const struct renesas_soc soc_rz_g1e __initconst __maybe_unused = {
137 .family = &fam_rzg1,
138 .id = 0x4c,
139 };
140
141 static const struct renesas_soc soc_rz_g1c __initconst __maybe_unused = {
142 .family = &fam_rzg1,
143 .id = 0x53,
144 };
145
146 static const struct renesas_soc soc_rz_g2m __initconst __maybe_unused = {
147 .family = &fam_rzg2,
148 .id = 0x52,
149 };
150
151 static const struct renesas_soc soc_rz_g2n __initconst __maybe_unused = {
152 .family = &fam_rzg2,
153 .id = 0x55,
154 };
155
156 static const struct renesas_soc soc_rz_g2e __initconst __maybe_unused = {
157 .family = &fam_rzg2,
158 .id = 0x57,
159 };
160
161 static const struct renesas_soc soc_rz_g2h __initconst __maybe_unused = {
162 .family = &fam_rzg2,
163 .id = 0x4f,
164 };
165
166 static const struct renesas_soc soc_rz_g2l __initconst __maybe_unused = {
167 .family = &fam_rzg2l,
168 .id = 0x841c447,
169 };
170
171 static const struct renesas_soc soc_rz_g2ul __initconst __maybe_unused = {
172 .family = &fam_rzg2ul,
173 .id = 0x8450447,
174 };
175
176 static const struct renesas_soc soc_rz_v2l __initconst __maybe_unused = {
177 .family = &fam_rzv2l,
178 .id = 0x8447447,
179 };
180
181 static const struct renesas_soc soc_rz_v2m __initconst __maybe_unused = {
182 .family = &fam_rzv2m,
183 };
184
185 static const struct renesas_soc soc_rcar_m1a __initconst __maybe_unused = {
186 .family = &fam_rcar_gen1,
187 };
188
189 static const struct renesas_soc soc_rcar_h1 __initconst __maybe_unused = {
190 .family = &fam_rcar_gen1,
191 .id = 0x3b,
192 };
193
194 static const struct renesas_soc soc_rcar_h2 __initconst __maybe_unused = {
195 .family = &fam_rcar_gen2,
196 .id = 0x45,
197 };
198
199 static const struct renesas_soc soc_rcar_m2_w __initconst __maybe_unused = {
200 .family = &fam_rcar_gen2,
201 .id = 0x47,
202 };
203
204 static const struct renesas_soc soc_rcar_v2h __initconst __maybe_unused = {
205 .family = &fam_rcar_gen2,
206 .id = 0x4a,
207 };
208
209 static const struct renesas_soc soc_rcar_m2_n __initconst __maybe_unused = {
210 .family = &fam_rcar_gen2,
211 .id = 0x4b,
212 };
213
214 static const struct renesas_soc soc_rcar_e2 __initconst __maybe_unused = {
215 .family = &fam_rcar_gen2,
216 .id = 0x4c,
217 };
218
219 static const struct renesas_soc soc_rcar_h3 __initconst __maybe_unused = {
220 .family = &fam_rcar_gen3,
221 .id = 0x4f,
222 };
223
224 static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = {
225 .family = &fam_rcar_gen3,
226 .id = 0x52,
227 };
228
229 static const struct renesas_soc soc_rcar_m3_n __initconst __maybe_unused = {
230 .family = &fam_rcar_gen3,
231 .id = 0x55,
232 };
233
234 static const struct renesas_soc soc_rcar_v3m __initconst __maybe_unused = {
235 .family = &fam_rcar_gen3,
236 .id = 0x54,
237 };
238
239 static const struct renesas_soc soc_rcar_v3h __initconst __maybe_unused = {
240 .family = &fam_rcar_gen3,
241 .id = 0x56,
242 };
243
244 static const struct renesas_soc soc_rcar_e3 __initconst __maybe_unused = {
245 .family = &fam_rcar_gen3,
246 .id = 0x57,
247 };
248
249 static const struct renesas_soc soc_rcar_d3 __initconst __maybe_unused = {
250 .family = &fam_rcar_gen3,
251 .id = 0x58,
252 };
253
254 static const struct renesas_soc soc_rcar_v3u __initconst __maybe_unused = {
255 .family = &fam_rcar_gen4,
256 .id = 0x59,
257 };
258
259 static const struct renesas_soc soc_rcar_s4 __initconst __maybe_unused = {
260 .family = &fam_rcar_gen4,
261 .id = 0x5a,
262 };
263
264 static const struct renesas_soc soc_rcar_v4h __initconst __maybe_unused = {
265 .family = &fam_rcar_gen4,
266 .id = 0x5c,
267 };
268
269 static const struct renesas_soc soc_rcar_v4m __initconst __maybe_unused = {
270 .family = &fam_rcar_gen4,
271 .id = 0x5d,
272 };
273
274 static const struct renesas_soc soc_rcar_x5h __initconst __maybe_unused = {
275 .family = &fam_rcar_gen5,
276 .id = 0x60,
277 };
278
279 static const struct renesas_soc soc_shmobile_ag5 __initconst __maybe_unused = {
280 .family = &fam_shmobile,
281 .id = 0x37,
282 };
283
284 static const struct of_device_id renesas_socs[] __initconst __maybe_unused = {
285 #ifdef CONFIG_ARCH_R7S72100
286 { .compatible = "renesas,r7s72100", .data = &soc_rz_a1h },
287 #endif
288 #ifdef CONFIG_ARCH_R7S9210
289 { .compatible = "renesas,r7s9210", .data = &soc_rz_a2m },
290 #endif
291 #ifdef CONFIG_ARCH_R8A73A4
292 { .compatible = "renesas,r8a73a4", .data = &soc_rmobile_ape6 },
293 #endif
294 #ifdef CONFIG_ARCH_R8A7740
295 { .compatible = "renesas,r8a7740", .data = &soc_rmobile_a1 },
296 #endif
297 #ifdef CONFIG_ARCH_R8A7742
298 { .compatible = "renesas,r8a7742", .data = &soc_rz_g1h },
299 #endif
300 #ifdef CONFIG_ARCH_R8A7743
301 { .compatible = "renesas,r8a7743", .data = &soc_rz_g1m },
302 #endif
303 #ifdef CONFIG_ARCH_R8A7744
304 { .compatible = "renesas,r8a7744", .data = &soc_rz_g1n },
305 #endif
306 #ifdef CONFIG_ARCH_R8A7745
307 { .compatible = "renesas,r8a7745", .data = &soc_rz_g1e },
308 #endif
309 #ifdef CONFIG_ARCH_R8A77470
310 { .compatible = "renesas,r8a77470", .data = &soc_rz_g1c },
311 #endif
312 #ifdef CONFIG_ARCH_R8A774A1
313 { .compatible = "renesas,r8a774a1", .data = &soc_rz_g2m },
314 #endif
315 #ifdef CONFIG_ARCH_R8A774B1
316 { .compatible = "renesas,r8a774b1", .data = &soc_rz_g2n },
317 #endif
318 #ifdef CONFIG_ARCH_R8A774C0
319 { .compatible = "renesas,r8a774c0", .data = &soc_rz_g2e },
320 #endif
321 #ifdef CONFIG_ARCH_R8A774E1
322 { .compatible = "renesas,r8a774e1", .data = &soc_rz_g2h },
323 #endif
324 #ifdef CONFIG_ARCH_R8A7778
325 { .compatible = "renesas,r8a7778", .data = &soc_rcar_m1a },
326 #endif
327 #ifdef CONFIG_ARCH_R8A7779
328 { .compatible = "renesas,r8a7779", .data = &soc_rcar_h1 },
329 #endif
330 #ifdef CONFIG_ARCH_R8A7790
331 { .compatible = "renesas,r8a7790", .data = &soc_rcar_h2 },
332 #endif
333 #ifdef CONFIG_ARCH_R8A7791
334 { .compatible = "renesas,r8a7791", .data = &soc_rcar_m2_w },
335 #endif
336 #ifdef CONFIG_ARCH_R8A7792
337 { .compatible = "renesas,r8a7792", .data = &soc_rcar_v2h },
338 #endif
339 #ifdef CONFIG_ARCH_R8A7793
340 { .compatible = "renesas,r8a7793", .data = &soc_rcar_m2_n },
341 #endif
342 #ifdef CONFIG_ARCH_R8A7794
343 { .compatible = "renesas,r8a7794", .data = &soc_rcar_e2 },
344 #endif
345 #ifdef CONFIG_ARCH_R8A77951
346 { .compatible = "renesas,r8a7795", .data = &soc_rcar_h3 },
347 { .compatible = "renesas,r8a779m0", .data = &soc_rcar_h3 },
348 { .compatible = "renesas,r8a779m1", .data = &soc_rcar_h3 },
349 { .compatible = "renesas,r8a779m8", .data = &soc_rcar_h3 },
350 { .compatible = "renesas,r8a779mb", .data = &soc_rcar_h3 },
351 #endif
352 #ifdef CONFIG_ARCH_R8A77960
353 { .compatible = "renesas,r8a7796", .data = &soc_rcar_m3_w },
354 #endif
355 #ifdef CONFIG_ARCH_R8A77961
356 { .compatible = "renesas,r8a77961", .data = &soc_rcar_m3_w },
357 { .compatible = "renesas,r8a779m2", .data = &soc_rcar_m3_w },
358 { .compatible = "renesas,r8a779m3", .data = &soc_rcar_m3_w },
359 #endif
360 #ifdef CONFIG_ARCH_R8A77965
361 { .compatible = "renesas,r8a77965", .data = &soc_rcar_m3_n },
362 { .compatible = "renesas,r8a779m4", .data = &soc_rcar_m3_n },
363 { .compatible = "renesas,r8a779m5", .data = &soc_rcar_m3_n },
364 #endif
365 #ifdef CONFIG_ARCH_R8A77970
366 { .compatible = "renesas,r8a77970", .data = &soc_rcar_v3m },
367 #endif
368 #ifdef CONFIG_ARCH_R8A77980
369 { .compatible = "renesas,r8a77980", .data = &soc_rcar_v3h },
370 #endif
371 #ifdef CONFIG_ARCH_R8A77990
372 { .compatible = "renesas,r8a77990", .data = &soc_rcar_e3 },
373 { .compatible = "renesas,r8a779m6", .data = &soc_rcar_e3 },
374 #endif
375 #ifdef CONFIG_ARCH_R8A77995
376 { .compatible = "renesas,r8a77995", .data = &soc_rcar_d3 },
377 { .compatible = "renesas,r8a779m7", .data = &soc_rcar_d3 },
378 #endif
379 #ifdef CONFIG_ARCH_R8A779A0
380 { .compatible = "renesas,r8a779a0", .data = &soc_rcar_v3u },
381 #endif
382 #ifdef CONFIG_ARCH_R8A779F0
383 { .compatible = "renesas,r8a779f0", .data = &soc_rcar_s4 },
384 #endif
385 #ifdef CONFIG_ARCH_R8A779G0
386 { .compatible = "renesas,r8a779g0", .data = &soc_rcar_v4h },
387 #endif
388 #ifdef CONFIG_ARCH_R8A779H0
389 { .compatible = "renesas,r8a779h0", .data = &soc_rcar_v4m },
390 #endif
391 #ifdef CONFIG_ARCH_R8A78000
392 { .compatible = "renesas,r8a78000", .data = &soc_rcar_x5h },
393 #endif
394 #ifdef CONFIG_ARCH_R9A07G043
395 #ifdef CONFIG_RISCV
396 { .compatible = "renesas,r9a07g043", .data = &soc_rz_five },
397 #else
398 { .compatible = "renesas,r9a07g043", .data = &soc_rz_g2ul },
399 #endif
400 #endif
401 #ifdef CONFIG_ARCH_R9A07G044
402 { .compatible = "renesas,r9a07g044", .data = &soc_rz_g2l },
403 #endif
404 #ifdef CONFIG_ARCH_R9A07G054
405 { .compatible = "renesas,r9a07g054", .data = &soc_rz_v2l },
406 #endif
407 #ifdef CONFIG_ARCH_R9A09G011
408 { .compatible = "renesas,r9a09g011", .data = &soc_rz_v2m },
409 #endif
410 #ifdef CONFIG_ARCH_SH73A0
411 { .compatible = "renesas,sh73a0", .data = &soc_shmobile_ag5 },
412 #endif
413 { /* sentinel */ }
414 };
415
416 struct renesas_id {
417 unsigned int offset;
418 u32 mask;
419 };
420
421 static const struct renesas_id id_bsid __initconst = {
422 .offset = 0,
423 .mask = 0xff0000,
424 /*
425 * TODO: Upper 4 bits of BSID are for chip version, but the format is
426 * not known at this time so we don't know how to specify eshi and eslo
427 */
428 };
429
430 static const struct renesas_id id_rzg2l __initconst = {
431 .offset = 0xa04,
432 .mask = 0xfffffff,
433 };
434
435 static const struct renesas_id id_rzv2m __initconst = {
436 .offset = 0x104,
437 .mask = 0xff,
438 };
439
440 static const struct renesas_id id_prr __initconst = {
441 .offset = 0,
442 .mask = 0xff00,
443 };
444
445 static const struct of_device_id renesas_ids[] __initconst = {
446 { .compatible = "renesas,bsid", .data = &id_bsid },
447 { .compatible = "renesas,r9a07g043-sysc", .data = &id_rzg2l },
448 { .compatible = "renesas,r9a07g044-sysc", .data = &id_rzg2l },
449 { .compatible = "renesas,r9a07g054-sysc", .data = &id_rzg2l },
450 { .compatible = "renesas,r9a08g045-sysc", .data = &id_rzg2l },
451 { .compatible = "renesas,r9a09g011-sys", .data = &id_rzv2m },
452 { .compatible = "renesas,prr", .data = &id_prr },
453 { /* sentinel */ }
454 };
455
renesas_soc_init(void)456 static int __init renesas_soc_init(void)
457 {
458 struct soc_device_attribute *soc_dev_attr;
459 unsigned int product, eshi = 0, eslo;
460 const struct renesas_family *family;
461 const struct of_device_id *match;
462 const struct renesas_soc *soc;
463 const struct renesas_id *id;
464 void __iomem *chipid = NULL;
465 const char *rev_prefix = "";
466 struct soc_device *soc_dev;
467 struct device_node *np;
468 const char *soc_id;
469 int ret;
470
471 match = of_match_node(renesas_socs, of_root);
472 if (!match)
473 return -ENODEV;
474
475 soc_id = strchr(match->compatible, ',') + 1;
476 soc = match->data;
477 family = soc->family;
478
479 np = of_find_matching_node_and_match(NULL, renesas_ids, &match);
480 if (np) {
481 id = match->data;
482 chipid = of_iomap(np, 0);
483 of_node_put(np);
484 } else if (soc->id && family->reg) {
485 /* Try hardcoded CCCR/PRR fallback */
486 id = &id_prr;
487 chipid = ioremap(family->reg, 4);
488 }
489
490 soc_dev_attr = kzalloc_obj(*soc_dev_attr);
491 if (!soc_dev_attr) {
492 if (chipid)
493 iounmap(chipid);
494 return -ENOMEM;
495 }
496
497 soc_dev_attr->family = kstrdup_const(family->name, GFP_KERNEL);
498 soc_dev_attr->soc_id = kstrdup_const(soc_id, GFP_KERNEL);
499
500 if (chipid) {
501 product = readl(chipid + id->offset);
502 iounmap(chipid);
503
504 if (id == &id_prr) {
505 /* R-Car M3-W ES1.1 incorrectly identifies as ES2.0 */
506 if ((product & 0x7fff) == 0x5210)
507 product ^= 0x11;
508 /* R-Car M3-W ES1.3 incorrectly identifies as ES2.1 */
509 if ((product & 0x7fff) == 0x5211)
510 product ^= 0x12;
511
512 eshi = ((product >> 4) & 0x0f) + 1;
513 eslo = product & 0xf;
514 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "ES%u.%u",
515 eshi, eslo);
516 } else if (id == &id_rzg2l) {
517 eshi = ((product >> 28) & 0x0f);
518 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%u",
519 eshi);
520 rev_prefix = "Rev ";
521 } else if (id == &id_rzv2m) {
522 eshi = ((product >> 4) & 0x0f);
523 eslo = product & 0xf;
524 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%u.%u",
525 eshi, eslo);
526 }
527
528 if (soc->id && field_get(id->mask, product) != soc->id) {
529 pr_warn("SoC mismatch (product = 0x%x)\n", product);
530 ret = -ENODEV;
531 goto free_soc_dev_attr;
532 }
533 }
534
535 pr_info("Detected Renesas %s %s %s%s\n", soc_dev_attr->family,
536 soc_dev_attr->soc_id, rev_prefix, soc_dev_attr->revision ?: "");
537
538 soc_dev = soc_device_register(soc_dev_attr);
539 if (IS_ERR(soc_dev)) {
540 ret = PTR_ERR(soc_dev);
541 goto free_soc_dev_attr;
542 }
543
544 return 0;
545
546 free_soc_dev_attr:
547 kfree(soc_dev_attr->revision);
548 kfree_const(soc_dev_attr->soc_id);
549 kfree_const(soc_dev_attr->family);
550 kfree(soc_dev_attr);
551 return ret;
552 }
553 early_initcall(renesas_soc_init);
554