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_shmobile_ag5 __initconst __maybe_unused = { 245 .family = &fam_shmobile, 246 .id = 0x37, 247 }; 248 249 250 static const struct of_device_id renesas_socs[] __initconst = { 251 #ifdef CONFIG_ARCH_R7S72100 252 { .compatible = "renesas,r7s72100", .data = &soc_rz_a1h }, 253 #endif 254 #ifdef CONFIG_ARCH_R7S9210 255 { .compatible = "renesas,r7s9210", .data = &soc_rz_a2m }, 256 #endif 257 #ifdef CONFIG_ARCH_R8A73A4 258 { .compatible = "renesas,r8a73a4", .data = &soc_rmobile_ape6 }, 259 #endif 260 #ifdef CONFIG_ARCH_R8A7740 261 { .compatible = "renesas,r8a7740", .data = &soc_rmobile_a1 }, 262 #endif 263 #ifdef CONFIG_ARCH_R8A7742 264 { .compatible = "renesas,r8a7742", .data = &soc_rz_g1h }, 265 #endif 266 #ifdef CONFIG_ARCH_R8A7743 267 { .compatible = "renesas,r8a7743", .data = &soc_rz_g1m }, 268 #endif 269 #ifdef CONFIG_ARCH_R8A7744 270 { .compatible = "renesas,r8a7744", .data = &soc_rz_g1n }, 271 #endif 272 #ifdef CONFIG_ARCH_R8A7745 273 { .compatible = "renesas,r8a7745", .data = &soc_rz_g1e }, 274 #endif 275 #ifdef CONFIG_ARCH_R8A77470 276 { .compatible = "renesas,r8a77470", .data = &soc_rz_g1c }, 277 #endif 278 #ifdef CONFIG_ARCH_R8A774A1 279 { .compatible = "renesas,r8a774a1", .data = &soc_rz_g2m }, 280 #endif 281 #ifdef CONFIG_ARCH_R8A774B1 282 { .compatible = "renesas,r8a774b1", .data = &soc_rz_g2n }, 283 #endif 284 #ifdef CONFIG_ARCH_R8A774C0 285 { .compatible = "renesas,r8a774c0", .data = &soc_rz_g2e }, 286 #endif 287 #ifdef CONFIG_ARCH_R8A774E1 288 { .compatible = "renesas,r8a774e1", .data = &soc_rz_g2h }, 289 #endif 290 #ifdef CONFIG_ARCH_R8A7778 291 { .compatible = "renesas,r8a7778", .data = &soc_rcar_m1a }, 292 #endif 293 #ifdef CONFIG_ARCH_R8A7779 294 { .compatible = "renesas,r8a7779", .data = &soc_rcar_h1 }, 295 #endif 296 #ifdef CONFIG_ARCH_R8A7790 297 { .compatible = "renesas,r8a7790", .data = &soc_rcar_h2 }, 298 #endif 299 #ifdef CONFIG_ARCH_R8A7791 300 { .compatible = "renesas,r8a7791", .data = &soc_rcar_m2_w }, 301 #endif 302 #ifdef CONFIG_ARCH_R8A7792 303 { .compatible = "renesas,r8a7792", .data = &soc_rcar_v2h }, 304 #endif 305 #ifdef CONFIG_ARCH_R8A7793 306 { .compatible = "renesas,r8a7793", .data = &soc_rcar_m2_n }, 307 #endif 308 #ifdef CONFIG_ARCH_R8A7794 309 { .compatible = "renesas,r8a7794", .data = &soc_rcar_e2 }, 310 #endif 311 #if defined(CONFIG_ARCH_R8A77950) || defined(CONFIG_ARCH_R8A77951) 312 { .compatible = "renesas,r8a7795", .data = &soc_rcar_h3 }, 313 #endif 314 #ifdef CONFIG_ARCH_R8A77951 315 { .compatible = "renesas,r8a779m0", .data = &soc_rcar_h3 }, 316 { .compatible = "renesas,r8a779m1", .data = &soc_rcar_h3 }, 317 { .compatible = "renesas,r8a779m8", .data = &soc_rcar_h3 }, 318 #endif 319 #ifdef CONFIG_ARCH_R8A77960 320 { .compatible = "renesas,r8a7796", .data = &soc_rcar_m3_w }, 321 #endif 322 #ifdef CONFIG_ARCH_R8A77961 323 { .compatible = "renesas,r8a77961", .data = &soc_rcar_m3_w }, 324 { .compatible = "renesas,r8a779m2", .data = &soc_rcar_m3_w }, 325 { .compatible = "renesas,r8a779m3", .data = &soc_rcar_m3_w }, 326 #endif 327 #ifdef CONFIG_ARCH_R8A77965 328 { .compatible = "renesas,r8a77965", .data = &soc_rcar_m3_n }, 329 { .compatible = "renesas,r8a779m4", .data = &soc_rcar_m3_n }, 330 { .compatible = "renesas,r8a779m5", .data = &soc_rcar_m3_n }, 331 #endif 332 #ifdef CONFIG_ARCH_R8A77970 333 { .compatible = "renesas,r8a77970", .data = &soc_rcar_v3m }, 334 #endif 335 #ifdef CONFIG_ARCH_R8A77980 336 { .compatible = "renesas,r8a77980", .data = &soc_rcar_v3h }, 337 #endif 338 #ifdef CONFIG_ARCH_R8A77990 339 { .compatible = "renesas,r8a77990", .data = &soc_rcar_e3 }, 340 { .compatible = "renesas,r8a779m6", .data = &soc_rcar_e3 }, 341 #endif 342 #ifdef CONFIG_ARCH_R8A77995 343 { .compatible = "renesas,r8a77995", .data = &soc_rcar_d3 }, 344 { .compatible = "renesas,r8a779m7", .data = &soc_rcar_d3 }, 345 #endif 346 #ifdef CONFIG_ARCH_R8A779A0 347 { .compatible = "renesas,r8a779a0", .data = &soc_rcar_v3u }, 348 #endif 349 #ifdef CONFIG_ARCH_R8A779F0 350 { .compatible = "renesas,r8a779f0", .data = &soc_rcar_s4 }, 351 #endif 352 #if defined(CONFIG_ARCH_R9A07G043) 353 { .compatible = "renesas,r9a07g043", .data = &soc_rz_g2ul }, 354 #endif 355 #if defined(CONFIG_ARCH_R9A07G044) 356 { .compatible = "renesas,r9a07g044", .data = &soc_rz_g2l }, 357 #endif 358 #if defined(CONFIG_ARCH_R9A07G054) 359 { .compatible = "renesas,r9a07g054", .data = &soc_rz_v2l }, 360 #endif 361 #ifdef CONFIG_ARCH_SH73A0 362 { .compatible = "renesas,sh73a0", .data = &soc_shmobile_ag5 }, 363 #endif 364 { /* sentinel */ } 365 }; 366 367 struct renesas_id { 368 unsigned int offset; 369 u32 mask; 370 }; 371 372 static const struct renesas_id id_bsid __initconst = { 373 .offset = 0, 374 .mask = 0xff0000, 375 /* 376 * TODO: Upper 4 bits of BSID are for chip version, but the format is 377 * not known at this time so we don't know how to specify eshi and eslo 378 */ 379 }; 380 381 static const struct renesas_id id_rzg2l __initconst = { 382 .offset = 0xa04, 383 .mask = 0xfffffff, 384 }; 385 386 static const struct renesas_id id_prr __initconst = { 387 .offset = 0, 388 .mask = 0xff00, 389 }; 390 391 static const struct of_device_id renesas_ids[] __initconst = { 392 { .compatible = "renesas,bsid", .data = &id_bsid }, 393 { .compatible = "renesas,r9a07g043-sysc", .data = &id_rzg2l }, 394 { .compatible = "renesas,r9a07g044-sysc", .data = &id_rzg2l }, 395 { .compatible = "renesas,r9a07g054-sysc", .data = &id_rzg2l }, 396 { .compatible = "renesas,prr", .data = &id_prr }, 397 { /* sentinel */ } 398 }; 399 400 static int __init renesas_soc_init(void) 401 { 402 struct soc_device_attribute *soc_dev_attr; 403 unsigned int product, eshi = 0, eslo; 404 const struct renesas_family *family; 405 const struct of_device_id *match; 406 const struct renesas_soc *soc; 407 const struct renesas_id *id; 408 void __iomem *chipid = NULL; 409 const char *rev_prefix = ""; 410 struct soc_device *soc_dev; 411 struct device_node *np; 412 const char *soc_id; 413 int ret; 414 415 match = of_match_node(renesas_socs, of_root); 416 if (!match) 417 return -ENODEV; 418 419 soc_id = strchr(match->compatible, ',') + 1; 420 soc = match->data; 421 family = soc->family; 422 423 np = of_find_matching_node_and_match(NULL, renesas_ids, &match); 424 if (np) { 425 id = match->data; 426 chipid = of_iomap(np, 0); 427 of_node_put(np); 428 } else if (soc->id && family->reg) { 429 /* Try hardcoded CCCR/PRR fallback */ 430 id = &id_prr; 431 chipid = ioremap(family->reg, 4); 432 } 433 434 soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); 435 if (!soc_dev_attr) 436 return -ENOMEM; 437 438 np = of_find_node_by_path("/"); 439 of_property_read_string(np, "model", &soc_dev_attr->machine); 440 of_node_put(np); 441 442 soc_dev_attr->family = kstrdup_const(family->name, GFP_KERNEL); 443 soc_dev_attr->soc_id = kstrdup_const(soc_id, GFP_KERNEL); 444 445 if (chipid) { 446 product = readl(chipid + id->offset); 447 iounmap(chipid); 448 449 if (id == &id_prr) { 450 /* R-Car M3-W ES1.1 incorrectly identifies as ES2.0 */ 451 if ((product & 0x7fff) == 0x5210) 452 product ^= 0x11; 453 /* R-Car M3-W ES1.3 incorrectly identifies as ES2.1 */ 454 if ((product & 0x7fff) == 0x5211) 455 product ^= 0x12; 456 457 eshi = ((product >> 4) & 0x0f) + 1; 458 eslo = product & 0xf; 459 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "ES%u.%u", 460 eshi, eslo); 461 } else if (id == &id_rzg2l) { 462 eshi = ((product >> 28) & 0x0f); 463 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%u", 464 eshi); 465 rev_prefix = "Rev "; 466 } 467 468 if (soc->id && 469 ((product & id->mask) >> __ffs(id->mask)) != soc->id) { 470 pr_warn("SoC mismatch (product = 0x%x)\n", product); 471 ret = -ENODEV; 472 goto free_soc_dev_attr; 473 } 474 } 475 476 pr_info("Detected Renesas %s %s %s%s\n", soc_dev_attr->family, 477 soc_dev_attr->soc_id, rev_prefix, soc_dev_attr->revision ?: ""); 478 479 soc_dev = soc_device_register(soc_dev_attr); 480 if (IS_ERR(soc_dev)) { 481 ret = PTR_ERR(soc_dev); 482 goto free_soc_dev_attr; 483 } 484 485 return 0; 486 487 free_soc_dev_attr: 488 kfree(soc_dev_attr->revision); 489 kfree_const(soc_dev_attr->soc_id); 490 kfree_const(soc_dev_attr->family); 491 kfree(soc_dev_attr); 492 return ret; 493 } 494 early_initcall(renesas_soc_init); 495