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1// SPDX-License-Identifier: GPL-2.02/*3 * Renesas SoC Identification4 *5 * Copyright (C) 2014-2016 Glider bvba6 */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 15struct renesas_family {16 const char name[16];17 u32 reg; /* CCCR or PRR, if not in DT */18};19 20static const struct renesas_family fam_rcar_gen1 __initconst __maybe_unused = {21 .name = "R-Car Gen1",22 .reg = 0xff000044, /* PRR (Product Register) */23};24 25static const struct renesas_family fam_rcar_gen2 __initconst __maybe_unused = {26 .name = "R-Car Gen2",27 .reg = 0xff000044, /* PRR (Product Register) */28};29 30static const struct renesas_family fam_rcar_gen3 __initconst __maybe_unused = {31 .name = "R-Car Gen3",32 .reg = 0xfff00044, /* PRR (Product Register) */33};34 35static const struct renesas_family fam_rcar_gen4 __initconst __maybe_unused = {36 .name = "R-Car Gen4",37};38 39static const struct renesas_family fam_rmobile __initconst __maybe_unused = {40 .name = "R-Mobile",41 .reg = 0xe600101c, /* CCCR (Common Chip Code Register) */42};43 44static const struct renesas_family fam_rza1 __initconst __maybe_unused = {45 .name = "RZ/A1",46};47 48static const struct renesas_family fam_rza2 __initconst __maybe_unused = {49 .name = "RZ/A2",50};51 52static const struct renesas_family fam_rzfive __initconst __maybe_unused = {53 .name = "RZ/Five",54};55 56static const struct renesas_family fam_rzg1 __initconst __maybe_unused = {57 .name = "RZ/G1",58 .reg = 0xff000044, /* PRR (Product Register) */59};60 61static const struct renesas_family fam_rzg2 __initconst __maybe_unused = {62 .name = "RZ/G2",63 .reg = 0xfff00044, /* PRR (Product Register) */64};65 66static const struct renesas_family fam_rzg2l __initconst __maybe_unused = {67 .name = "RZ/G2L",68};69 70static const struct renesas_family fam_rzg2ul __initconst __maybe_unused = {71 .name = "RZ/G2UL",72};73 74static const struct renesas_family fam_rzg3s __initconst __maybe_unused = {75 .name = "RZ/G3S",76};77 78static const struct renesas_family fam_rzv2h __initconst __maybe_unused = {79 .name = "RZ/V2H",80};81 82static const struct renesas_family fam_rzv2l __initconst __maybe_unused = {83 .name = "RZ/V2L",84};85 86static const struct renesas_family fam_rzv2m __initconst __maybe_unused = {87 .name = "RZ/V2M",88};89 90static const struct renesas_family fam_shmobile __initconst __maybe_unused = {91 .name = "SH-Mobile",92 .reg = 0xe600101c, /* CCCR (Common Chip Code Register) */93};94 95struct renesas_soc {96 const struct renesas_family *family;97 u32 id;98};99 100static const struct renesas_soc soc_rz_a1h __initconst __maybe_unused = {101 .family = &fam_rza1,102};103 104static const struct renesas_soc soc_rz_a2m __initconst __maybe_unused = {105 .family = &fam_rza2,106 .id = 0x3b,107};108 109static const struct renesas_soc soc_rmobile_ape6 __initconst __maybe_unused = {110 .family = &fam_rmobile,111 .id = 0x3f,112};113 114static const struct renesas_soc soc_rmobile_a1 __initconst __maybe_unused = {115 .family = &fam_rmobile,116 .id = 0x40,117};118 119static const struct renesas_soc soc_rz_five __initconst __maybe_unused = {120 .family = &fam_rzfive,121 .id = 0x847c447,122};123 124static const struct renesas_soc soc_rz_g1h __initconst __maybe_unused = {125 .family = &fam_rzg1,126 .id = 0x45,127};128 129static const struct renesas_soc soc_rz_g1m __initconst __maybe_unused = {130 .family = &fam_rzg1,131 .id = 0x47,132};133 134static const struct renesas_soc soc_rz_g1n __initconst __maybe_unused = {135 .family = &fam_rzg1,136 .id = 0x4b,137};138 139static const struct renesas_soc soc_rz_g1e __initconst __maybe_unused = {140 .family = &fam_rzg1,141 .id = 0x4c,142};143 144static const struct renesas_soc soc_rz_g1c __initconst __maybe_unused = {145 .family = &fam_rzg1,146 .id = 0x53,147};148 149static const struct renesas_soc soc_rz_g2m __initconst __maybe_unused = {150 .family = &fam_rzg2,151 .id = 0x52,152};153 154static const struct renesas_soc soc_rz_g2n __initconst __maybe_unused = {155 .family = &fam_rzg2,156 .id = 0x55,157};158 159static const struct renesas_soc soc_rz_g2e __initconst __maybe_unused = {160 .family = &fam_rzg2,161 .id = 0x57,162};163 164static const struct renesas_soc soc_rz_g2h __initconst __maybe_unused = {165 .family = &fam_rzg2,166 .id = 0x4f,167};168 169static const struct renesas_soc soc_rz_g2l __initconst __maybe_unused = {170 .family = &fam_rzg2l,171 .id = 0x841c447,172};173 174static const struct renesas_soc soc_rz_g2ul __initconst __maybe_unused = {175 .family = &fam_rzg2ul,176 .id = 0x8450447,177};178 179static const struct renesas_soc soc_rz_g3s __initconst __maybe_unused = {180 .family = &fam_rzg3s,181 .id = 0x85e0447,182};183 184static const struct renesas_soc soc_rz_v2h __initconst __maybe_unused = {185 .family = &fam_rzv2h,186 .id = 0x847a447,187};188 189static const struct renesas_soc soc_rz_v2l __initconst __maybe_unused = {190 .family = &fam_rzv2l,191 .id = 0x8447447,192};193 194static const struct renesas_soc soc_rz_v2m __initconst __maybe_unused = {195 .family = &fam_rzv2m,196};197 198static const struct renesas_soc soc_rcar_m1a __initconst __maybe_unused = {199 .family = &fam_rcar_gen1,200};201 202static const struct renesas_soc soc_rcar_h1 __initconst __maybe_unused = {203 .family = &fam_rcar_gen1,204 .id = 0x3b,205};206 207static const struct renesas_soc soc_rcar_h2 __initconst __maybe_unused = {208 .family = &fam_rcar_gen2,209 .id = 0x45,210};211 212static const struct renesas_soc soc_rcar_m2_w __initconst __maybe_unused = {213 .family = &fam_rcar_gen2,214 .id = 0x47,215};216 217static const struct renesas_soc soc_rcar_v2h __initconst __maybe_unused = {218 .family = &fam_rcar_gen2,219 .id = 0x4a,220};221 222static const struct renesas_soc soc_rcar_m2_n __initconst __maybe_unused = {223 .family = &fam_rcar_gen2,224 .id = 0x4b,225};226 227static const struct renesas_soc soc_rcar_e2 __initconst __maybe_unused = {228 .family = &fam_rcar_gen2,229 .id = 0x4c,230};231 232static const struct renesas_soc soc_rcar_h3 __initconst __maybe_unused = {233 .family = &fam_rcar_gen3,234 .id = 0x4f,235};236 237static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = {238 .family = &fam_rcar_gen3,239 .id = 0x52,240};241 242static const struct renesas_soc soc_rcar_m3_n __initconst __maybe_unused = {243 .family = &fam_rcar_gen3,244 .id = 0x55,245};246 247static const struct renesas_soc soc_rcar_v3m __initconst __maybe_unused = {248 .family = &fam_rcar_gen3,249 .id = 0x54,250};251 252static const struct renesas_soc soc_rcar_v3h __initconst __maybe_unused = {253 .family = &fam_rcar_gen3,254 .id = 0x56,255};256 257static const struct renesas_soc soc_rcar_e3 __initconst __maybe_unused = {258 .family = &fam_rcar_gen3,259 .id = 0x57,260};261 262static const struct renesas_soc soc_rcar_d3 __initconst __maybe_unused = {263 .family = &fam_rcar_gen3,264 .id = 0x58,265};266 267static const struct renesas_soc soc_rcar_v3u __initconst __maybe_unused = {268 .family = &fam_rcar_gen4,269 .id = 0x59,270};271 272static const struct renesas_soc soc_rcar_s4 __initconst __maybe_unused = {273 .family = &fam_rcar_gen4,274 .id = 0x5a,275};276 277static const struct renesas_soc soc_rcar_v4h __initconst __maybe_unused = {278 .family = &fam_rcar_gen4,279 .id = 0x5c,280};281 282static const struct renesas_soc soc_rcar_v4m __initconst __maybe_unused = {283 .family = &fam_rcar_gen4,284 .id = 0x5d,285};286 287static const struct renesas_soc soc_shmobile_ag5 __initconst __maybe_unused = {288 .family = &fam_shmobile,289 .id = 0x37,290};291 292 293static const struct of_device_id renesas_socs[] __initconst __maybe_unused = {294#ifdef CONFIG_ARCH_R7S72100295 { .compatible = "renesas,r7s72100", .data = &soc_rz_a1h },296#endif297#ifdef CONFIG_ARCH_R7S9210298 { .compatible = "renesas,r7s9210", .data = &soc_rz_a2m },299#endif300#ifdef CONFIG_ARCH_R8A73A4301 { .compatible = "renesas,r8a73a4", .data = &soc_rmobile_ape6 },302#endif303#ifdef CONFIG_ARCH_R8A7740304 { .compatible = "renesas,r8a7740", .data = &soc_rmobile_a1 },305#endif306#ifdef CONFIG_ARCH_R8A7742307 { .compatible = "renesas,r8a7742", .data = &soc_rz_g1h },308#endif309#ifdef CONFIG_ARCH_R8A7743310 { .compatible = "renesas,r8a7743", .data = &soc_rz_g1m },311#endif312#ifdef CONFIG_ARCH_R8A7744313 { .compatible = "renesas,r8a7744", .data = &soc_rz_g1n },314#endif315#ifdef CONFIG_ARCH_R8A7745316 { .compatible = "renesas,r8a7745", .data = &soc_rz_g1e },317#endif318#ifdef CONFIG_ARCH_R8A77470319 { .compatible = "renesas,r8a77470", .data = &soc_rz_g1c },320#endif321#ifdef CONFIG_ARCH_R8A774A1322 { .compatible = "renesas,r8a774a1", .data = &soc_rz_g2m },323#endif324#ifdef CONFIG_ARCH_R8A774B1325 { .compatible = "renesas,r8a774b1", .data = &soc_rz_g2n },326#endif327#ifdef CONFIG_ARCH_R8A774C0328 { .compatible = "renesas,r8a774c0", .data = &soc_rz_g2e },329#endif330#ifdef CONFIG_ARCH_R8A774E1331 { .compatible = "renesas,r8a774e1", .data = &soc_rz_g2h },332#endif333#ifdef CONFIG_ARCH_R8A7778334 { .compatible = "renesas,r8a7778", .data = &soc_rcar_m1a },335#endif336#ifdef CONFIG_ARCH_R8A7779337 { .compatible = "renesas,r8a7779", .data = &soc_rcar_h1 },338#endif339#ifdef CONFIG_ARCH_R8A7790340 { .compatible = "renesas,r8a7790", .data = &soc_rcar_h2 },341#endif342#ifdef CONFIG_ARCH_R8A7791343 { .compatible = "renesas,r8a7791", .data = &soc_rcar_m2_w },344#endif345#ifdef CONFIG_ARCH_R8A7792346 { .compatible = "renesas,r8a7792", .data = &soc_rcar_v2h },347#endif348#ifdef CONFIG_ARCH_R8A7793349 { .compatible = "renesas,r8a7793", .data = &soc_rcar_m2_n },350#endif351#ifdef CONFIG_ARCH_R8A7794352 { .compatible = "renesas,r8a7794", .data = &soc_rcar_e2 },353#endif354#ifdef CONFIG_ARCH_R8A77951355 { .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#endif361#ifdef CONFIG_ARCH_R8A77960362 { .compatible = "renesas,r8a7796", .data = &soc_rcar_m3_w },363#endif364#ifdef CONFIG_ARCH_R8A77961365 { .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#endif369#ifdef CONFIG_ARCH_R8A77965370 { .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#endif374#ifdef CONFIG_ARCH_R8A77970375 { .compatible = "renesas,r8a77970", .data = &soc_rcar_v3m },376#endif377#ifdef CONFIG_ARCH_R8A77980378 { .compatible = "renesas,r8a77980", .data = &soc_rcar_v3h },379#endif380#ifdef CONFIG_ARCH_R8A77990381 { .compatible = "renesas,r8a77990", .data = &soc_rcar_e3 },382 { .compatible = "renesas,r8a779m6", .data = &soc_rcar_e3 },383#endif384#ifdef CONFIG_ARCH_R8A77995385 { .compatible = "renesas,r8a77995", .data = &soc_rcar_d3 },386 { .compatible = "renesas,r8a779m7", .data = &soc_rcar_d3 },387#endif388#ifdef CONFIG_ARCH_R8A779A0389 { .compatible = "renesas,r8a779a0", .data = &soc_rcar_v3u },390#endif391#ifdef CONFIG_ARCH_R8A779F0392 { .compatible = "renesas,r8a779f0", .data = &soc_rcar_s4 },393#endif394#ifdef CONFIG_ARCH_R8A779G0395 { .compatible = "renesas,r8a779g0", .data = &soc_rcar_v4h },396#endif397#ifdef CONFIG_ARCH_R8A779H0398 { .compatible = "renesas,r8a779h0", .data = &soc_rcar_v4m },399#endif400#ifdef CONFIG_ARCH_R9A07G043401#ifdef CONFIG_RISCV402 { .compatible = "renesas,r9a07g043", .data = &soc_rz_five },403#else404 { .compatible = "renesas,r9a07g043", .data = &soc_rz_g2ul },405#endif406#endif407#ifdef CONFIG_ARCH_R9A07G044408 { .compatible = "renesas,r9a07g044", .data = &soc_rz_g2l },409#endif410#ifdef CONFIG_ARCH_R9A07G054411 { .compatible = "renesas,r9a07g054", .data = &soc_rz_v2l },412#endif413#ifdef CONFIG_ARCH_R9A08G045414 { .compatible = "renesas,r9a08g045", .data = &soc_rz_g3s },415#endif416#ifdef CONFIG_ARCH_R9A09G011417 { .compatible = "renesas,r9a09g011", .data = &soc_rz_v2m },418#endif419#ifdef CONFIG_ARCH_R9A09G057420 { .compatible = "renesas,r9a09g057", .data = &soc_rz_v2h },421#endif422#ifdef CONFIG_ARCH_SH73A0423 { .compatible = "renesas,sh73a0", .data = &soc_shmobile_ag5 },424#endif425 { /* sentinel */ }426};427 428struct renesas_id {429 unsigned int offset;430 u32 mask;431};432 433static 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 is438 * not known at this time so we don't know how to specify eshi and eslo439 */440};441 442static const struct renesas_id id_rzg2l __initconst = {443 .offset = 0xa04,444 .mask = 0xfffffff,445};446 447static const struct renesas_id id_rzv2h __initconst = {448 .offset = 0x304,449 .mask = 0xfffffff,450};451 452static const struct renesas_id id_rzv2m __initconst = {453 .offset = 0x104,454 .mask = 0xff,455};456 457static const struct renesas_id id_prr __initconst = {458 .offset = 0,459 .mask = 0xff00,460};461 462static 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 474static 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 565free_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}572early_initcall(renesas_soc_init);573