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