renesas-soc.c

  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
 16struct renesas_family {
 17	const char name[16];
 18	u32 reg;			/* CCCR or PRR, if not in DT */
 19};
 20
 21static const struct renesas_family fam_rcar_gen1 __initconst __maybe_unused = {
 22	.name	= "R-Car Gen1",
 23	.reg	= 0xff000044,		/* PRR (Product Register) */
 24};
 25
 26static const struct renesas_family fam_rcar_gen2 __initconst __maybe_unused = {
 27	.name	= "R-Car Gen2",
 28	.reg	= 0xff000044,		/* PRR (Product Register) */
 29};
 30
 31static const struct renesas_family fam_rcar_gen3 __initconst __maybe_unused = {
 32	.name	= "R-Car Gen3",
 33	.reg	= 0xfff00044,		/* PRR (Product Register) */
 34};
 35
 36static const struct renesas_family fam_rcar_gen4 __initconst __maybe_unused = {
 37	.name	= "R-Car Gen4",
 38};
 39
 40static const struct renesas_family fam_rcar_gen5 __initconst __maybe_unused = {
 41	.name   = "R-Car Gen5",
 42};
 43
 44static const struct renesas_family fam_rmobile __initconst __maybe_unused = {
 45	.name	= "R-Mobile",
 46	.reg	= 0xe600101c,		/* CCCR (Common Chip Code Register) */
 47};
 48
 49static const struct renesas_family fam_rza1 __initconst __maybe_unused = {
 50	.name	= "RZ/A1",
 51};
 52
 53static const struct renesas_family fam_rza2 __initconst __maybe_unused = {
 54	.name	= "RZ/A2",
 55};
 56
 57static const struct renesas_family fam_rzfive __initconst __maybe_unused = {
 58	.name	= "RZ/Five",
 59};
 60
 61static const struct renesas_family fam_rzg1 __initconst __maybe_unused = {
 62	.name	= "RZ/G1",
 63	.reg	= 0xff000044,		/* PRR (Product Register) */
 64};
 65
 66static const struct renesas_family fam_rzg2 __initconst __maybe_unused = {
 67	.name	= "RZ/G2",
 68	.reg	= 0xfff00044,		/* PRR (Product Register) */
 69};
 70
 71static const struct renesas_family fam_rzg2l __initconst __maybe_unused = {
 72	.name	= "RZ/G2L",
 73};
 74
 75static const struct renesas_family fam_rzg2ul __initconst __maybe_unused = {
 76	.name	= "RZ/G2UL",
 77};
 78
 79static const struct renesas_family fam_rzv2l __initconst __maybe_unused = {
 80	.name	= "RZ/V2L",
 81};
 82
 83static const struct renesas_family fam_rzv2m __initconst __maybe_unused = {
 84	.name	= "RZ/V2M",
 85};
 86
 87static const struct renesas_family fam_shmobile __initconst __maybe_unused = {
 88	.name	= "SH-Mobile",
 89	.reg	= 0xe600101c,		/* CCCR (Common Chip Code Register) */
 90};
 91
 92struct renesas_soc {
 93	const struct renesas_family *family;
 94	u32 id;
 95};
 96
 97static const struct renesas_soc soc_rz_a1h __initconst __maybe_unused = {
 98	.family	= &fam_rza1,
 99};
100
101static const struct renesas_soc soc_rz_a2m __initconst __maybe_unused = {
102	.family	= &fam_rza2,
103	.id	= 0x3b,
104};
105
106static const struct renesas_soc soc_rmobile_ape6 __initconst __maybe_unused = {
107	.family	= &fam_rmobile,
108	.id	= 0x3f,
109};
110
111static const struct renesas_soc soc_rmobile_a1 __initconst __maybe_unused = {
112	.family	= &fam_rmobile,
113	.id	= 0x40,
114};
115
116static const struct renesas_soc soc_rz_five __initconst __maybe_unused = {
117	.family = &fam_rzfive,
118	.id     = 0x847c447,
119};
120
121static const struct renesas_soc soc_rz_g1h __initconst __maybe_unused = {
122	.family	= &fam_rzg1,
123	.id	= 0x45,
124};
125
126static const struct renesas_soc soc_rz_g1m __initconst __maybe_unused = {
127	.family	= &fam_rzg1,
128	.id	= 0x47,
129};
130
131static const struct renesas_soc soc_rz_g1n __initconst __maybe_unused = {
132	.family	= &fam_rzg1,
133	.id	= 0x4b,
134};
135
136static const struct renesas_soc soc_rz_g1e __initconst __maybe_unused = {
137	.family	= &fam_rzg1,
138	.id	= 0x4c,
139};
140
141static const struct renesas_soc soc_rz_g1c __initconst __maybe_unused = {
142	.family	= &fam_rzg1,
143	.id	= 0x53,
144};
145
146static const struct renesas_soc soc_rz_g2m __initconst __maybe_unused = {
147	.family	= &fam_rzg2,
148	.id	= 0x52,
149};
150
151static const struct renesas_soc soc_rz_g2n __initconst __maybe_unused = {
152	.family = &fam_rzg2,
153	.id     = 0x55,
154};
155
156static const struct renesas_soc soc_rz_g2e __initconst __maybe_unused = {
157	.family	= &fam_rzg2,
158	.id	= 0x57,
159};
160
161static const struct renesas_soc soc_rz_g2h __initconst __maybe_unused = {
162	.family	= &fam_rzg2,
163	.id	= 0x4f,
164};
165
166static const struct renesas_soc soc_rz_g2l __initconst __maybe_unused = {
167	.family = &fam_rzg2l,
168	.id     = 0x841c447,
169};
170
171static const struct renesas_soc soc_rz_g2ul __initconst __maybe_unused = {
172	.family = &fam_rzg2ul,
173	.id     = 0x8450447,
174};
175
176static const struct renesas_soc soc_rz_v2l __initconst __maybe_unused = {
177	.family = &fam_rzv2l,
178	.id     = 0x8447447,
179};
180
181static const struct renesas_soc soc_rz_v2m __initconst __maybe_unused = {
182	.family = &fam_rzv2m,
183};
184
185static const struct renesas_soc soc_rcar_m1a __initconst __maybe_unused = {
186	.family	= &fam_rcar_gen1,
187};
188
189static const struct renesas_soc soc_rcar_h1 __initconst __maybe_unused = {
190	.family	= &fam_rcar_gen1,
191	.id	= 0x3b,
192};
193
194static const struct renesas_soc soc_rcar_h2 __initconst __maybe_unused = {
195	.family	= &fam_rcar_gen2,
196	.id	= 0x45,
197};
198
199static const struct renesas_soc soc_rcar_m2_w __initconst __maybe_unused = {
200	.family	= &fam_rcar_gen2,
201	.id	= 0x47,
202};
203
204static const struct renesas_soc soc_rcar_v2h __initconst __maybe_unused = {
205	.family	= &fam_rcar_gen2,
206	.id	= 0x4a,
207};
208
209static const struct renesas_soc soc_rcar_m2_n __initconst __maybe_unused = {
210	.family	= &fam_rcar_gen2,
211	.id	= 0x4b,
212};
213
214static const struct renesas_soc soc_rcar_e2 __initconst __maybe_unused = {
215	.family	= &fam_rcar_gen2,
216	.id	= 0x4c,
217};
218
219static const struct renesas_soc soc_rcar_h3 __initconst __maybe_unused = {
220	.family	= &fam_rcar_gen3,
221	.id	= 0x4f,
222};
223
224static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = {
225	.family	= &fam_rcar_gen3,
226	.id	= 0x52,
227};
228
229static const struct renesas_soc soc_rcar_m3_n __initconst __maybe_unused = {
230	.family = &fam_rcar_gen3,
231	.id     = 0x55,
232};
233
234static const struct renesas_soc soc_rcar_v3m __initconst __maybe_unused = {
235	.family	= &fam_rcar_gen3,
236	.id	= 0x54,
237};
238
239static const struct renesas_soc soc_rcar_v3h __initconst __maybe_unused = {
240	.family	= &fam_rcar_gen3,
241	.id	= 0x56,
242};
243
244static const struct renesas_soc soc_rcar_e3 __initconst __maybe_unused = {
245	.family	= &fam_rcar_gen3,
246	.id	= 0x57,
247};
248
249static const struct renesas_soc soc_rcar_d3 __initconst __maybe_unused = {
250	.family	= &fam_rcar_gen3,
251	.id	= 0x58,
252};
253
254static const struct renesas_soc soc_rcar_v3u __initconst __maybe_unused = {
255	.family	= &fam_rcar_gen4,
256	.id	= 0x59,
257};
258
259static const struct renesas_soc soc_rcar_s4 __initconst __maybe_unused = {
260	.family	= &fam_rcar_gen4,
261	.id	= 0x5a,
262};
263
264static const struct renesas_soc soc_rcar_v4h __initconst __maybe_unused = {
265	.family	= &fam_rcar_gen4,
266	.id	= 0x5c,
267};
268
269static const struct renesas_soc soc_rcar_v4m __initconst __maybe_unused = {
270	.family = &fam_rcar_gen4,
271	.id     = 0x5d,
272};
273
274static const struct renesas_soc soc_rcar_x5h __initconst __maybe_unused = {
275	.family = &fam_rcar_gen5,
276	.id     = 0x60,
277};
278
279static const struct renesas_soc soc_shmobile_ag5 __initconst __maybe_unused = {
280	.family	= &fam_shmobile,
281	.id	= 0x37,
282};
283
284static 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
416struct renesas_id {
417	unsigned int offset;
418	u32 mask;
419};
420
421static 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
430static const struct renesas_id id_rzg2l __initconst = {
431	.offset = 0xa04,
432	.mask = 0xfffffff,
433};
434
435static const struct renesas_id id_rzv2m __initconst = {
436	.offset = 0x104,
437	.mask = 0xff,
438};
439
440static const struct renesas_id id_prr __initconst = {
441	.offset = 0,
442	.mask = 0xff00,
443};
444
445static 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
456static 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(sizeof(*soc_dev_attr), GFP_KERNEL);
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
546free_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}
553early_initcall(renesas_soc_init);