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 }; 436 437 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 return -ENOMEM; 474 475 np = of_find_node_by_path("/"); 476 of_property_read_string(np, "model", &soc_dev_attr->machine); 477 of_node_put(np); 478 479 soc_dev_attr->family = kstrdup_const(family->name, GFP_KERNEL); 480 soc_dev_attr->soc_id = kstrdup_const(soc_id, GFP_KERNEL); 481 482 if (chipid) { 483 product = readl(chipid + id->offset); 484 iounmap(chipid); 485 486 if (id == &id_prr) { 487 /* R-Car M3-W ES1.1 incorrectly identifies as ES2.0 */ 488 if ((product & 0x7fff) == 0x5210) 489 product ^= 0x11; 490 /* R-Car M3-W ES1.3 incorrectly identifies as ES2.1 */ 491 if ((product & 0x7fff) == 0x5211) 492 product ^= 0x12; 493 494 eshi = ((product >> 4) & 0x0f) + 1; 495 eslo = product & 0xf; 496 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "ES%u.%u", 497 eshi, eslo); 498 } else if (id == &id_rzg2l) { 499 eshi = ((product >> 28) & 0x0f); 500 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%u", 501 eshi); 502 rev_prefix = "Rev "; 503 } else if (id == &id_rzv2m) { 504 eshi = ((product >> 4) & 0x0f); 505 eslo = product & 0xf; 506 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%u.%u", 507 eshi, eslo); 508 } 509 510 if (soc->id && 511 ((product & id->mask) >> __ffs(id->mask)) != soc->id) { 512 pr_warn("SoC mismatch (product = 0x%x)\n", product); 513 ret = -ENODEV; 514 goto free_soc_dev_attr; 515 } 516 } 517 518 pr_info("Detected Renesas %s %s %s%s\n", soc_dev_attr->family, 519 soc_dev_attr->soc_id, rev_prefix, soc_dev_attr->revision ?: ""); 520 521 soc_dev = soc_device_register(soc_dev_attr); 522 if (IS_ERR(soc_dev)) { 523 ret = PTR_ERR(soc_dev); 524 goto free_soc_dev_attr; 525 } 526 527 return 0; 528 529 free_soc_dev_attr: 530 kfree(soc_dev_attr->revision); 531 kfree_const(soc_dev_attr->soc_id); 532 kfree_const(soc_dev_attr->family); 533 kfree(soc_dev_attr); 534 return ret; 535 } 536 early_initcall(renesas_soc_init); 537