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_rzg1 __initconst __maybe_unused = { 54 .name = "RZ/G1", 55 .reg = 0xff000044, /* PRR (Product Register) */ 56 }; 57 58 static const struct renesas_family fam_rzg2 __initconst __maybe_unused = { 59 .name = "RZ/G2", 60 .reg = 0xfff00044, /* PRR (Product Register) */ 61 }; 62 63 static const struct renesas_family fam_rzg2l __initconst __maybe_unused = { 64 .name = "RZ/G2L", 65 }; 66 67 static const struct renesas_family fam_rzg2ul __initconst __maybe_unused = { 68 .name = "RZ/G2UL", 69 }; 70 71 static const struct renesas_family fam_rzv2l __initconst __maybe_unused = { 72 .name = "RZ/V2L", 73 }; 74 75 static const struct renesas_family fam_shmobile __initconst __maybe_unused = { 76 .name = "SH-Mobile", 77 .reg = 0xe600101c, /* CCCR (Common Chip Code Register) */ 78 }; 79 80 81 struct renesas_soc { 82 const struct renesas_family *family; 83 u32 id; 84 }; 85 86 static const struct renesas_soc soc_rz_a1h __initconst __maybe_unused = { 87 .family = &fam_rza1, 88 }; 89 90 static const struct renesas_soc soc_rz_a2m __initconst __maybe_unused = { 91 .family = &fam_rza2, 92 .id = 0x3b, 93 }; 94 95 static const struct renesas_soc soc_rmobile_ape6 __initconst __maybe_unused = { 96 .family = &fam_rmobile, 97 .id = 0x3f, 98 }; 99 100 static const struct renesas_soc soc_rmobile_a1 __initconst __maybe_unused = { 101 .family = &fam_rmobile, 102 .id = 0x40, 103 }; 104 105 static const struct renesas_soc soc_rz_g1h __initconst __maybe_unused = { 106 .family = &fam_rzg1, 107 .id = 0x45, 108 }; 109 110 static const struct renesas_soc soc_rz_g1m __initconst __maybe_unused = { 111 .family = &fam_rzg1, 112 .id = 0x47, 113 }; 114 115 static const struct renesas_soc soc_rz_g1n __initconst __maybe_unused = { 116 .family = &fam_rzg1, 117 .id = 0x4b, 118 }; 119 120 static const struct renesas_soc soc_rz_g1e __initconst __maybe_unused = { 121 .family = &fam_rzg1, 122 .id = 0x4c, 123 }; 124 125 static const struct renesas_soc soc_rz_g1c __initconst __maybe_unused = { 126 .family = &fam_rzg1, 127 .id = 0x53, 128 }; 129 130 static const struct renesas_soc soc_rz_g2m __initconst __maybe_unused = { 131 .family = &fam_rzg2, 132 .id = 0x52, 133 }; 134 135 static const struct renesas_soc soc_rz_g2n __initconst __maybe_unused = { 136 .family = &fam_rzg2, 137 .id = 0x55, 138 }; 139 140 static const struct renesas_soc soc_rz_g2e __initconst __maybe_unused = { 141 .family = &fam_rzg2, 142 .id = 0x57, 143 }; 144 145 static const struct renesas_soc soc_rz_g2h __initconst __maybe_unused = { 146 .family = &fam_rzg2, 147 .id = 0x4f, 148 }; 149 150 static const struct renesas_soc soc_rz_g2l __initconst __maybe_unused = { 151 .family = &fam_rzg2l, 152 .id = 0x841c447, 153 }; 154 155 static const struct renesas_soc soc_rz_g2ul __initconst __maybe_unused = { 156 .family = &fam_rzg2ul, 157 .id = 0x8450447, 158 }; 159 160 static const struct renesas_soc soc_rz_v2l __initconst __maybe_unused = { 161 .family = &fam_rzv2l, 162 .id = 0x8447447, 163 }; 164 165 static const struct renesas_soc soc_rcar_m1a __initconst __maybe_unused = { 166 .family = &fam_rcar_gen1, 167 }; 168 169 static const struct renesas_soc soc_rcar_h1 __initconst __maybe_unused = { 170 .family = &fam_rcar_gen1, 171 .id = 0x3b, 172 }; 173 174 static const struct renesas_soc soc_rcar_h2 __initconst __maybe_unused = { 175 .family = &fam_rcar_gen2, 176 .id = 0x45, 177 }; 178 179 static const struct renesas_soc soc_rcar_m2_w __initconst __maybe_unused = { 180 .family = &fam_rcar_gen2, 181 .id = 0x47, 182 }; 183 184 static const struct renesas_soc soc_rcar_v2h __initconst __maybe_unused = { 185 .family = &fam_rcar_gen2, 186 .id = 0x4a, 187 }; 188 189 static const struct renesas_soc soc_rcar_m2_n __initconst __maybe_unused = { 190 .family = &fam_rcar_gen2, 191 .id = 0x4b, 192 }; 193 194 static const struct renesas_soc soc_rcar_e2 __initconst __maybe_unused = { 195 .family = &fam_rcar_gen2, 196 .id = 0x4c, 197 }; 198 199 static const struct renesas_soc soc_rcar_h3 __initconst __maybe_unused = { 200 .family = &fam_rcar_gen3, 201 .id = 0x4f, 202 }; 203 204 static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = { 205 .family = &fam_rcar_gen3, 206 .id = 0x52, 207 }; 208 209 static const struct renesas_soc soc_rcar_m3_n __initconst __maybe_unused = { 210 .family = &fam_rcar_gen3, 211 .id = 0x55, 212 }; 213 214 static const struct renesas_soc soc_rcar_v3m __initconst __maybe_unused = { 215 .family = &fam_rcar_gen3, 216 .id = 0x54, 217 }; 218 219 static const struct renesas_soc soc_rcar_v3h __initconst __maybe_unused = { 220 .family = &fam_rcar_gen3, 221 .id = 0x56, 222 }; 223 224 static const struct renesas_soc soc_rcar_e3 __initconst __maybe_unused = { 225 .family = &fam_rcar_gen3, 226 .id = 0x57, 227 }; 228 229 static const struct renesas_soc soc_rcar_d3 __initconst __maybe_unused = { 230 .family = &fam_rcar_gen3, 231 .id = 0x58, 232 }; 233 234 static const struct renesas_soc soc_rcar_v3u __initconst __maybe_unused = { 235 .family = &fam_rcar_gen3, 236 .id = 0x59, 237 }; 238 239 static const struct renesas_soc soc_rcar_s4 __initconst __maybe_unused = { 240 .family = &fam_rcar_gen4, 241 .id = 0x5a, 242 }; 243 244 static const struct renesas_soc soc_rcar_v4h __initconst __maybe_unused = { 245 .family = &fam_rcar_gen4, 246 .id = 0x5c, 247 }; 248 249 static const struct renesas_soc soc_shmobile_ag5 __initconst __maybe_unused = { 250 .family = &fam_shmobile, 251 .id = 0x37, 252 }; 253 254 255 static const struct of_device_id renesas_socs[] __initconst = { 256 #ifdef CONFIG_ARCH_R7S72100 257 { .compatible = "renesas,r7s72100", .data = &soc_rz_a1h }, 258 #endif 259 #ifdef CONFIG_ARCH_R7S9210 260 { .compatible = "renesas,r7s9210", .data = &soc_rz_a2m }, 261 #endif 262 #ifdef CONFIG_ARCH_R8A73A4 263 { .compatible = "renesas,r8a73a4", .data = &soc_rmobile_ape6 }, 264 #endif 265 #ifdef CONFIG_ARCH_R8A7740 266 { .compatible = "renesas,r8a7740", .data = &soc_rmobile_a1 }, 267 #endif 268 #ifdef CONFIG_ARCH_R8A7742 269 { .compatible = "renesas,r8a7742", .data = &soc_rz_g1h }, 270 #endif 271 #ifdef CONFIG_ARCH_R8A7743 272 { .compatible = "renesas,r8a7743", .data = &soc_rz_g1m }, 273 #endif 274 #ifdef CONFIG_ARCH_R8A7744 275 { .compatible = "renesas,r8a7744", .data = &soc_rz_g1n }, 276 #endif 277 #ifdef CONFIG_ARCH_R8A7745 278 { .compatible = "renesas,r8a7745", .data = &soc_rz_g1e }, 279 #endif 280 #ifdef CONFIG_ARCH_R8A77470 281 { .compatible = "renesas,r8a77470", .data = &soc_rz_g1c }, 282 #endif 283 #ifdef CONFIG_ARCH_R8A774A1 284 { .compatible = "renesas,r8a774a1", .data = &soc_rz_g2m }, 285 #endif 286 #ifdef CONFIG_ARCH_R8A774B1 287 { .compatible = "renesas,r8a774b1", .data = &soc_rz_g2n }, 288 #endif 289 #ifdef CONFIG_ARCH_R8A774C0 290 { .compatible = "renesas,r8a774c0", .data = &soc_rz_g2e }, 291 #endif 292 #ifdef CONFIG_ARCH_R8A774E1 293 { .compatible = "renesas,r8a774e1", .data = &soc_rz_g2h }, 294 #endif 295 #ifdef CONFIG_ARCH_R8A7778 296 { .compatible = "renesas,r8a7778", .data = &soc_rcar_m1a }, 297 #endif 298 #ifdef CONFIG_ARCH_R8A7779 299 { .compatible = "renesas,r8a7779", .data = &soc_rcar_h1 }, 300 #endif 301 #ifdef CONFIG_ARCH_R8A7790 302 { .compatible = "renesas,r8a7790", .data = &soc_rcar_h2 }, 303 #endif 304 #ifdef CONFIG_ARCH_R8A7791 305 { .compatible = "renesas,r8a7791", .data = &soc_rcar_m2_w }, 306 #endif 307 #ifdef CONFIG_ARCH_R8A7792 308 { .compatible = "renesas,r8a7792", .data = &soc_rcar_v2h }, 309 #endif 310 #ifdef CONFIG_ARCH_R8A7793 311 { .compatible = "renesas,r8a7793", .data = &soc_rcar_m2_n }, 312 #endif 313 #ifdef CONFIG_ARCH_R8A7794 314 { .compatible = "renesas,r8a7794", .data = &soc_rcar_e2 }, 315 #endif 316 #if defined(CONFIG_ARCH_R8A77950) || defined(CONFIG_ARCH_R8A77951) 317 { .compatible = "renesas,r8a7795", .data = &soc_rcar_h3 }, 318 #endif 319 #ifdef CONFIG_ARCH_R8A77951 320 { .compatible = "renesas,r8a779m0", .data = &soc_rcar_h3 }, 321 { .compatible = "renesas,r8a779m1", .data = &soc_rcar_h3 }, 322 { .compatible = "renesas,r8a779m8", .data = &soc_rcar_h3 }, 323 #endif 324 #ifdef CONFIG_ARCH_R8A77960 325 { .compatible = "renesas,r8a7796", .data = &soc_rcar_m3_w }, 326 #endif 327 #ifdef CONFIG_ARCH_R8A77961 328 { .compatible = "renesas,r8a77961", .data = &soc_rcar_m3_w }, 329 { .compatible = "renesas,r8a779m2", .data = &soc_rcar_m3_w }, 330 { .compatible = "renesas,r8a779m3", .data = &soc_rcar_m3_w }, 331 #endif 332 #ifdef CONFIG_ARCH_R8A77965 333 { .compatible = "renesas,r8a77965", .data = &soc_rcar_m3_n }, 334 { .compatible = "renesas,r8a779m4", .data = &soc_rcar_m3_n }, 335 { .compatible = "renesas,r8a779m5", .data = &soc_rcar_m3_n }, 336 #endif 337 #ifdef CONFIG_ARCH_R8A77970 338 { .compatible = "renesas,r8a77970", .data = &soc_rcar_v3m }, 339 #endif 340 #ifdef CONFIG_ARCH_R8A77980 341 { .compatible = "renesas,r8a77980", .data = &soc_rcar_v3h }, 342 #endif 343 #ifdef CONFIG_ARCH_R8A77990 344 { .compatible = "renesas,r8a77990", .data = &soc_rcar_e3 }, 345 { .compatible = "renesas,r8a779m6", .data = &soc_rcar_e3 }, 346 #endif 347 #ifdef CONFIG_ARCH_R8A77995 348 { .compatible = "renesas,r8a77995", .data = &soc_rcar_d3 }, 349 { .compatible = "renesas,r8a779m7", .data = &soc_rcar_d3 }, 350 #endif 351 #ifdef CONFIG_ARCH_R8A779A0 352 { .compatible = "renesas,r8a779a0", .data = &soc_rcar_v3u }, 353 #endif 354 #ifdef CONFIG_ARCH_R8A779F0 355 { .compatible = "renesas,r8a779f0", .data = &soc_rcar_s4 }, 356 #endif 357 #ifdef CONFIG_ARCH_R8A779G0 358 { .compatible = "renesas,r8a779g0", .data = &soc_rcar_v4h }, 359 #endif 360 #if defined(CONFIG_ARCH_R9A07G043) 361 { .compatible = "renesas,r9a07g043", .data = &soc_rz_g2ul }, 362 #endif 363 #if defined(CONFIG_ARCH_R9A07G044) 364 { .compatible = "renesas,r9a07g044", .data = &soc_rz_g2l }, 365 #endif 366 #if defined(CONFIG_ARCH_R9A07G054) 367 { .compatible = "renesas,r9a07g054", .data = &soc_rz_v2l }, 368 #endif 369 #ifdef CONFIG_ARCH_SH73A0 370 { .compatible = "renesas,sh73a0", .data = &soc_shmobile_ag5 }, 371 #endif 372 { /* sentinel */ } 373 }; 374 375 struct renesas_id { 376 unsigned int offset; 377 u32 mask; 378 }; 379 380 static const struct renesas_id id_bsid __initconst = { 381 .offset = 0, 382 .mask = 0xff0000, 383 /* 384 * TODO: Upper 4 bits of BSID are for chip version, but the format is 385 * not known at this time so we don't know how to specify eshi and eslo 386 */ 387 }; 388 389 static const struct renesas_id id_rzg2l __initconst = { 390 .offset = 0xa04, 391 .mask = 0xfffffff, 392 }; 393 394 static const struct renesas_id id_prr __initconst = { 395 .offset = 0, 396 .mask = 0xff00, 397 }; 398 399 static const struct of_device_id renesas_ids[] __initconst = { 400 { .compatible = "renesas,bsid", .data = &id_bsid }, 401 { .compatible = "renesas,r9a07g043-sysc", .data = &id_rzg2l }, 402 { .compatible = "renesas,r9a07g044-sysc", .data = &id_rzg2l }, 403 { .compatible = "renesas,r9a07g054-sysc", .data = &id_rzg2l }, 404 { .compatible = "renesas,prr", .data = &id_prr }, 405 { /* sentinel */ } 406 }; 407 408 static int __init renesas_soc_init(void) 409 { 410 struct soc_device_attribute *soc_dev_attr; 411 unsigned int product, eshi = 0, eslo; 412 const struct renesas_family *family; 413 const struct of_device_id *match; 414 const struct renesas_soc *soc; 415 const struct renesas_id *id; 416 void __iomem *chipid = NULL; 417 const char *rev_prefix = ""; 418 struct soc_device *soc_dev; 419 struct device_node *np; 420 const char *soc_id; 421 int ret; 422 423 match = of_match_node(renesas_socs, of_root); 424 if (!match) 425 return -ENODEV; 426 427 soc_id = strchr(match->compatible, ',') + 1; 428 soc = match->data; 429 family = soc->family; 430 431 np = of_find_matching_node_and_match(NULL, renesas_ids, &match); 432 if (np) { 433 id = match->data; 434 chipid = of_iomap(np, 0); 435 of_node_put(np); 436 } else if (soc->id && family->reg) { 437 /* Try hardcoded CCCR/PRR fallback */ 438 id = &id_prr; 439 chipid = ioremap(family->reg, 4); 440 } 441 442 soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); 443 if (!soc_dev_attr) 444 return -ENOMEM; 445 446 np = of_find_node_by_path("/"); 447 of_property_read_string(np, "model", &soc_dev_attr->machine); 448 of_node_put(np); 449 450 soc_dev_attr->family = kstrdup_const(family->name, GFP_KERNEL); 451 soc_dev_attr->soc_id = kstrdup_const(soc_id, GFP_KERNEL); 452 453 if (chipid) { 454 product = readl(chipid + id->offset); 455 iounmap(chipid); 456 457 if (id == &id_prr) { 458 /* R-Car M3-W ES1.1 incorrectly identifies as ES2.0 */ 459 if ((product & 0x7fff) == 0x5210) 460 product ^= 0x11; 461 /* R-Car M3-W ES1.3 incorrectly identifies as ES2.1 */ 462 if ((product & 0x7fff) == 0x5211) 463 product ^= 0x12; 464 465 eshi = ((product >> 4) & 0x0f) + 1; 466 eslo = product & 0xf; 467 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "ES%u.%u", 468 eshi, eslo); 469 } else if (id == &id_rzg2l) { 470 eshi = ((product >> 28) & 0x0f); 471 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%u", 472 eshi); 473 rev_prefix = "Rev "; 474 } 475 476 if (soc->id && 477 ((product & id->mask) >> __ffs(id->mask)) != soc->id) { 478 pr_warn("SoC mismatch (product = 0x%x)\n", product); 479 ret = -ENODEV; 480 goto free_soc_dev_attr; 481 } 482 } 483 484 pr_info("Detected Renesas %s %s %s%s\n", soc_dev_attr->family, 485 soc_dev_attr->soc_id, rev_prefix, soc_dev_attr->revision ?: ""); 486 487 soc_dev = soc_device_register(soc_dev_attr); 488 if (IS_ERR(soc_dev)) { 489 ret = PTR_ERR(soc_dev); 490 goto free_soc_dev_attr; 491 } 492 493 return 0; 494 495 free_soc_dev_attr: 496 kfree(soc_dev_attr->revision); 497 kfree_const(soc_dev_attr->soc_id); 498 kfree_const(soc_dev_attr->family); 499 kfree(soc_dev_attr); 500 return ret; 501 } 502 early_initcall(renesas_soc_init); 503