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 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_rmobile __initconst __maybe_unused = { 41 .name = "R-Mobile", 42 .reg = 0xe600101c, /* CCCR (Common Chip Code Register) */ 43}; 44 45static const struct renesas_family fam_rza1 __initconst __maybe_unused = { 46 .name = "RZ/A1", 47}; 48 49static const struct renesas_family fam_rza2 __initconst __maybe_unused = { 50 .name = "RZ/A2", 51}; 52 53static const struct renesas_family fam_rzfive __initconst __maybe_unused = { 54 .name = "RZ/Five", 55}; 56 57static const struct renesas_family fam_rzg1 __initconst __maybe_unused = { 58 .name = "RZ/G1", 59 .reg = 0xff000044, /* PRR (Product Register) */ 60}; 61 62static const struct renesas_family fam_rzg2 __initconst __maybe_unused = { 63 .name = "RZ/G2", 64 .reg = 0xfff00044, /* PRR (Product Register) */ 65}; 66 67static const struct renesas_family fam_rzg2l __initconst __maybe_unused = { 68 .name = "RZ/G2L", 69}; 70 71static const struct renesas_family fam_rzg2ul __initconst __maybe_unused = { 72 .name = "RZ/G2UL", 73}; 74 75static const struct renesas_family fam_rzv2l __initconst __maybe_unused = { 76 .name = "RZ/V2L", 77}; 78 79static const struct renesas_family fam_rzv2m __initconst __maybe_unused = { 80 .name = "RZ/V2M", 81}; 82 83static const struct renesas_family fam_shmobile __initconst __maybe_unused = { 84 .name = "SH-Mobile", 85 .reg = 0xe600101c, /* CCCR (Common Chip Code Register) */ 86}; 87 88 89struct renesas_soc { 90 const struct renesas_family *family; 91 u32 id; 92}; 93 94static const struct renesas_soc soc_rz_a1h __initconst __maybe_unused = { 95 .family = &fam_rza1, 96}; 97 98static const struct renesas_soc soc_rz_a2m __initconst __maybe_unused = { 99 .family = &fam_rza2, 100 .id = 0x3b, 101}; 102 103static const struct renesas_soc soc_rmobile_ape6 __initconst __maybe_unused = { 104 .family = &fam_rmobile, 105 .id = 0x3f, 106}; 107 108static const struct renesas_soc soc_rmobile_a1 __initconst __maybe_unused = { 109 .family = &fam_rmobile, 110 .id = 0x40, 111}; 112 113static const struct renesas_soc soc_rz_five __initconst __maybe_unused = { 114 .family = &fam_rzfive, 115 .id = 0x847c447, 116}; 117 118static const struct renesas_soc soc_rz_g1h __initconst __maybe_unused = { 119 .family = &fam_rzg1, 120 .id = 0x45, 121}; 122 123static const struct renesas_soc soc_rz_g1m __initconst __maybe_unused = { 124 .family = &fam_rzg1, 125 .id = 0x47, 126}; 127 128static const struct renesas_soc soc_rz_g1n __initconst __maybe_unused = { 129 .family = &fam_rzg1, 130 .id = 0x4b, 131}; 132 133static const struct renesas_soc soc_rz_g1e __initconst __maybe_unused = { 134 .family = &fam_rzg1, 135 .id = 0x4c, 136}; 137 138static const struct renesas_soc soc_rz_g1c __initconst __maybe_unused = { 139 .family = &fam_rzg1, 140 .id = 0x53, 141}; 142 143static const struct renesas_soc soc_rz_g2m __initconst __maybe_unused = { 144 .family = &fam_rzg2, 145 .id = 0x52, 146}; 147 148static const struct renesas_soc soc_rz_g2n __initconst __maybe_unused = { 149 .family = &fam_rzg2, 150 .id = 0x55, 151}; 152 153static const struct renesas_soc soc_rz_g2e __initconst __maybe_unused = { 154 .family = &fam_rzg2, 155 .id = 0x57, 156}; 157 158static const struct renesas_soc soc_rz_g2h __initconst __maybe_unused = { 159 .family = &fam_rzg2, 160 .id = 0x4f, 161}; 162 163static const struct renesas_soc soc_rz_g2l __initconst __maybe_unused = { 164 .family = &fam_rzg2l, 165 .id = 0x841c447, 166}; 167 168static const struct renesas_soc soc_rz_g2ul __initconst __maybe_unused = { 169 .family = &fam_rzg2ul, 170 .id = 0x8450447, 171}; 172 173static const struct renesas_soc soc_rz_v2l __initconst __maybe_unused = { 174 .family = &fam_rzv2l, 175 .id = 0x8447447, 176}; 177 178static const struct renesas_soc soc_rz_v2m __initconst __maybe_unused = { 179 .family = &fam_rzv2m, 180}; 181 182static const struct renesas_soc soc_rcar_m1a __initconst __maybe_unused = { 183 .family = &fam_rcar_gen1, 184}; 185 186static const struct renesas_soc soc_rcar_h1 __initconst __maybe_unused = { 187 .family = &fam_rcar_gen1, 188 .id = 0x3b, 189}; 190 191static const struct renesas_soc soc_rcar_h2 __initconst __maybe_unused = { 192 .family = &fam_rcar_gen2, 193 .id = 0x45, 194}; 195 196static const struct renesas_soc soc_rcar_m2_w __initconst __maybe_unused = { 197 .family = &fam_rcar_gen2, 198 .id = 0x47, 199}; 200 201static const struct renesas_soc soc_rcar_v2h __initconst __maybe_unused = { 202 .family = &fam_rcar_gen2, 203 .id = 0x4a, 204}; 205 206static const struct renesas_soc soc_rcar_m2_n __initconst __maybe_unused = { 207 .family = &fam_rcar_gen2, 208 .id = 0x4b, 209}; 210 211static const struct renesas_soc soc_rcar_e2 __initconst __maybe_unused = { 212 .family = &fam_rcar_gen2, 213 .id = 0x4c, 214}; 215 216static const struct renesas_soc soc_rcar_h3 __initconst __maybe_unused = { 217 .family = &fam_rcar_gen3, 218 .id = 0x4f, 219}; 220 221static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = { 222 .family = &fam_rcar_gen3, 223 .id = 0x52, 224}; 225 226static const struct renesas_soc soc_rcar_m3_n __initconst __maybe_unused = { 227 .family = &fam_rcar_gen3, 228 .id = 0x55, 229}; 230 231static const struct renesas_soc soc_rcar_v3m __initconst __maybe_unused = { 232 .family = &fam_rcar_gen3, 233 .id = 0x54, 234}; 235 236static const struct renesas_soc soc_rcar_v3h __initconst __maybe_unused = { 237 .family = &fam_rcar_gen3, 238 .id = 0x56, 239}; 240 241static const struct renesas_soc soc_rcar_e3 __initconst __maybe_unused = { 242 .family = &fam_rcar_gen3, 243 .id = 0x57, 244}; 245 246static const struct renesas_soc soc_rcar_d3 __initconst __maybe_unused = { 247 .family = &fam_rcar_gen3, 248 .id = 0x58, 249}; 250 251static const struct renesas_soc soc_rcar_v3u __initconst __maybe_unused = { 252 .family = &fam_rcar_gen4, 253 .id = 0x59, 254}; 255 256static const struct renesas_soc soc_rcar_s4 __initconst __maybe_unused = { 257 .family = &fam_rcar_gen4, 258 .id = 0x5a, 259}; 260 261static const struct renesas_soc soc_rcar_v4h __initconst __maybe_unused = { 262 .family = &fam_rcar_gen4, 263 .id = 0x5c, 264}; 265 266static const struct renesas_soc soc_shmobile_ag5 __initconst __maybe_unused = { 267 .family = &fam_shmobile, 268 .id = 0x37, 269}; 270 271 272static 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 398struct renesas_id { 399 unsigned int offset; 400 u32 mask; 401}; 402 403static 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 412static const struct renesas_id id_rzg2l __initconst = { 413 .offset = 0xa04, 414 .mask = 0xfffffff, 415}; 416 417static const struct renesas_id id_rzv2m __initconst = { 418 .offset = 0x104, 419 .mask = 0xff, 420}; 421 422static const struct renesas_id id_prr __initconst = { 423 .offset = 0, 424 .mask = 0xff00, 425}; 426 427static 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 437static 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 532free_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} 539early_initcall(renesas_soc_init); 540