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_rzv2l __initconst __maybe_unused = { 68 .name = "RZ/V2L", 69 }; 70 71 static const struct renesas_family fam_shmobile __initconst __maybe_unused = { 72 .name = "SH-Mobile", 73 .reg = 0xe600101c, /* CCCR (Common Chip Code Register) */ 74 }; 75 76 77 struct renesas_soc { 78 const struct renesas_family *family; 79 u32 id; 80 }; 81 82 static const struct renesas_soc soc_rz_a1h __initconst __maybe_unused = { 83 .family = &fam_rza1, 84 }; 85 86 static const struct renesas_soc soc_rz_a2m __initconst __maybe_unused = { 87 .family = &fam_rza2, 88 .id = 0x3b, 89 }; 90 91 static const struct renesas_soc soc_rmobile_ape6 __initconst __maybe_unused = { 92 .family = &fam_rmobile, 93 .id = 0x3f, 94 }; 95 96 static const struct renesas_soc soc_rmobile_a1 __initconst __maybe_unused = { 97 .family = &fam_rmobile, 98 .id = 0x40, 99 }; 100 101 static const struct renesas_soc soc_rz_g1h __initconst __maybe_unused = { 102 .family = &fam_rzg1, 103 .id = 0x45, 104 }; 105 106 static const struct renesas_soc soc_rz_g1m __initconst __maybe_unused = { 107 .family = &fam_rzg1, 108 .id = 0x47, 109 }; 110 111 static const struct renesas_soc soc_rz_g1n __initconst __maybe_unused = { 112 .family = &fam_rzg1, 113 .id = 0x4b, 114 }; 115 116 static const struct renesas_soc soc_rz_g1e __initconst __maybe_unused = { 117 .family = &fam_rzg1, 118 .id = 0x4c, 119 }; 120 121 static const struct renesas_soc soc_rz_g1c __initconst __maybe_unused = { 122 .family = &fam_rzg1, 123 .id = 0x53, 124 }; 125 126 static const struct renesas_soc soc_rz_g2m __initconst __maybe_unused = { 127 .family = &fam_rzg2, 128 .id = 0x52, 129 }; 130 131 static const struct renesas_soc soc_rz_g2n __initconst __maybe_unused = { 132 .family = &fam_rzg2, 133 .id = 0x55, 134 }; 135 136 static const struct renesas_soc soc_rz_g2e __initconst __maybe_unused = { 137 .family = &fam_rzg2, 138 .id = 0x57, 139 }; 140 141 static const struct renesas_soc soc_rz_g2h __initconst __maybe_unused = { 142 .family = &fam_rzg2, 143 .id = 0x4f, 144 }; 145 146 static const struct renesas_soc soc_rz_g2l __initconst __maybe_unused = { 147 .family = &fam_rzg2l, 148 .id = 0x841c447, 149 }; 150 151 static const struct renesas_soc soc_rz_v2l __initconst __maybe_unused = { 152 .family = &fam_rzv2l, 153 .id = 0x8447447, 154 }; 155 156 static const struct renesas_soc soc_rcar_m1a __initconst __maybe_unused = { 157 .family = &fam_rcar_gen1, 158 }; 159 160 static const struct renesas_soc soc_rcar_h1 __initconst __maybe_unused = { 161 .family = &fam_rcar_gen1, 162 .id = 0x3b, 163 }; 164 165 static const struct renesas_soc soc_rcar_h2 __initconst __maybe_unused = { 166 .family = &fam_rcar_gen2, 167 .id = 0x45, 168 }; 169 170 static const struct renesas_soc soc_rcar_m2_w __initconst __maybe_unused = { 171 .family = &fam_rcar_gen2, 172 .id = 0x47, 173 }; 174 175 static const struct renesas_soc soc_rcar_v2h __initconst __maybe_unused = { 176 .family = &fam_rcar_gen2, 177 .id = 0x4a, 178 }; 179 180 static const struct renesas_soc soc_rcar_m2_n __initconst __maybe_unused = { 181 .family = &fam_rcar_gen2, 182 .id = 0x4b, 183 }; 184 185 static const struct renesas_soc soc_rcar_e2 __initconst __maybe_unused = { 186 .family = &fam_rcar_gen2, 187 .id = 0x4c, 188 }; 189 190 static const struct renesas_soc soc_rcar_h3 __initconst __maybe_unused = { 191 .family = &fam_rcar_gen3, 192 .id = 0x4f, 193 }; 194 195 static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = { 196 .family = &fam_rcar_gen3, 197 .id = 0x52, 198 }; 199 200 static const struct renesas_soc soc_rcar_m3_n __initconst __maybe_unused = { 201 .family = &fam_rcar_gen3, 202 .id = 0x55, 203 }; 204 205 static const struct renesas_soc soc_rcar_v3m __initconst __maybe_unused = { 206 .family = &fam_rcar_gen3, 207 .id = 0x54, 208 }; 209 210 static const struct renesas_soc soc_rcar_v3h __initconst __maybe_unused = { 211 .family = &fam_rcar_gen3, 212 .id = 0x56, 213 }; 214 215 static const struct renesas_soc soc_rcar_e3 __initconst __maybe_unused = { 216 .family = &fam_rcar_gen3, 217 .id = 0x57, 218 }; 219 220 static const struct renesas_soc soc_rcar_d3 __initconst __maybe_unused = { 221 .family = &fam_rcar_gen3, 222 .id = 0x58, 223 }; 224 225 static const struct renesas_soc soc_rcar_v3u __initconst __maybe_unused = { 226 .family = &fam_rcar_gen3, 227 .id = 0x59, 228 }; 229 230 static const struct renesas_soc soc_rcar_s4 __initconst __maybe_unused = { 231 .family = &fam_rcar_gen4, 232 .id = 0x5a, 233 }; 234 235 static const struct renesas_soc soc_shmobile_ag5 __initconst __maybe_unused = { 236 .family = &fam_shmobile, 237 .id = 0x37, 238 }; 239 240 241 static const struct of_device_id renesas_socs[] __initconst = { 242 #ifdef CONFIG_ARCH_R7S72100 243 { .compatible = "renesas,r7s72100", .data = &soc_rz_a1h }, 244 #endif 245 #ifdef CONFIG_ARCH_R7S9210 246 { .compatible = "renesas,r7s9210", .data = &soc_rz_a2m }, 247 #endif 248 #ifdef CONFIG_ARCH_R8A73A4 249 { .compatible = "renesas,r8a73a4", .data = &soc_rmobile_ape6 }, 250 #endif 251 #ifdef CONFIG_ARCH_R8A7740 252 { .compatible = "renesas,r8a7740", .data = &soc_rmobile_a1 }, 253 #endif 254 #ifdef CONFIG_ARCH_R8A7742 255 { .compatible = "renesas,r8a7742", .data = &soc_rz_g1h }, 256 #endif 257 #ifdef CONFIG_ARCH_R8A7743 258 { .compatible = "renesas,r8a7743", .data = &soc_rz_g1m }, 259 #endif 260 #ifdef CONFIG_ARCH_R8A7744 261 { .compatible = "renesas,r8a7744", .data = &soc_rz_g1n }, 262 #endif 263 #ifdef CONFIG_ARCH_R8A7745 264 { .compatible = "renesas,r8a7745", .data = &soc_rz_g1e }, 265 #endif 266 #ifdef CONFIG_ARCH_R8A77470 267 { .compatible = "renesas,r8a77470", .data = &soc_rz_g1c }, 268 #endif 269 #ifdef CONFIG_ARCH_R8A774A1 270 { .compatible = "renesas,r8a774a1", .data = &soc_rz_g2m }, 271 #endif 272 #ifdef CONFIG_ARCH_R8A774B1 273 { .compatible = "renesas,r8a774b1", .data = &soc_rz_g2n }, 274 #endif 275 #ifdef CONFIG_ARCH_R8A774C0 276 { .compatible = "renesas,r8a774c0", .data = &soc_rz_g2e }, 277 #endif 278 #ifdef CONFIG_ARCH_R8A774E1 279 { .compatible = "renesas,r8a774e1", .data = &soc_rz_g2h }, 280 #endif 281 #ifdef CONFIG_ARCH_R8A7778 282 { .compatible = "renesas,r8a7778", .data = &soc_rcar_m1a }, 283 #endif 284 #ifdef CONFIG_ARCH_R8A7779 285 { .compatible = "renesas,r8a7779", .data = &soc_rcar_h1 }, 286 #endif 287 #ifdef CONFIG_ARCH_R8A7790 288 { .compatible = "renesas,r8a7790", .data = &soc_rcar_h2 }, 289 #endif 290 #ifdef CONFIG_ARCH_R8A7791 291 { .compatible = "renesas,r8a7791", .data = &soc_rcar_m2_w }, 292 #endif 293 #ifdef CONFIG_ARCH_R8A7792 294 { .compatible = "renesas,r8a7792", .data = &soc_rcar_v2h }, 295 #endif 296 #ifdef CONFIG_ARCH_R8A7793 297 { .compatible = "renesas,r8a7793", .data = &soc_rcar_m2_n }, 298 #endif 299 #ifdef CONFIG_ARCH_R8A7794 300 { .compatible = "renesas,r8a7794", .data = &soc_rcar_e2 }, 301 #endif 302 #if defined(CONFIG_ARCH_R8A77950) || defined(CONFIG_ARCH_R8A77951) 303 { .compatible = "renesas,r8a7795", .data = &soc_rcar_h3 }, 304 #endif 305 #ifdef CONFIG_ARCH_R8A77951 306 { .compatible = "renesas,r8a779m0", .data = &soc_rcar_h3 }, 307 { .compatible = "renesas,r8a779m1", .data = &soc_rcar_h3 }, 308 { .compatible = "renesas,r8a779m8", .data = &soc_rcar_h3 }, 309 #endif 310 #ifdef CONFIG_ARCH_R8A77960 311 { .compatible = "renesas,r8a7796", .data = &soc_rcar_m3_w }, 312 #endif 313 #ifdef CONFIG_ARCH_R8A77961 314 { .compatible = "renesas,r8a77961", .data = &soc_rcar_m3_w }, 315 { .compatible = "renesas,r8a779m2", .data = &soc_rcar_m3_w }, 316 { .compatible = "renesas,r8a779m3", .data = &soc_rcar_m3_w }, 317 #endif 318 #ifdef CONFIG_ARCH_R8A77965 319 { .compatible = "renesas,r8a77965", .data = &soc_rcar_m3_n }, 320 { .compatible = "renesas,r8a779m4", .data = &soc_rcar_m3_n }, 321 { .compatible = "renesas,r8a779m5", .data = &soc_rcar_m3_n }, 322 #endif 323 #ifdef CONFIG_ARCH_R8A77970 324 { .compatible = "renesas,r8a77970", .data = &soc_rcar_v3m }, 325 #endif 326 #ifdef CONFIG_ARCH_R8A77980 327 { .compatible = "renesas,r8a77980", .data = &soc_rcar_v3h }, 328 #endif 329 #ifdef CONFIG_ARCH_R8A77990 330 { .compatible = "renesas,r8a77990", .data = &soc_rcar_e3 }, 331 { .compatible = "renesas,r8a779m6", .data = &soc_rcar_e3 }, 332 #endif 333 #ifdef CONFIG_ARCH_R8A77995 334 { .compatible = "renesas,r8a77995", .data = &soc_rcar_d3 }, 335 { .compatible = "renesas,r8a779m7", .data = &soc_rcar_d3 }, 336 #endif 337 #ifdef CONFIG_ARCH_R8A779A0 338 { .compatible = "renesas,r8a779a0", .data = &soc_rcar_v3u }, 339 #endif 340 #ifdef CONFIG_ARCH_R8A779F0 341 { .compatible = "renesas,r8a779f0", .data = &soc_rcar_s4 }, 342 #endif 343 #if defined(CONFIG_ARCH_R9A07G044) 344 { .compatible = "renesas,r9a07g044", .data = &soc_rz_g2l }, 345 #endif 346 #if defined(CONFIG_ARCH_R9A07G054) 347 { .compatible = "renesas,r9a07g054", .data = &soc_rz_v2l }, 348 #endif 349 #ifdef CONFIG_ARCH_SH73A0 350 { .compatible = "renesas,sh73a0", .data = &soc_shmobile_ag5 }, 351 #endif 352 { /* sentinel */ } 353 }; 354 355 struct renesas_id { 356 unsigned int offset; 357 u32 mask; 358 }; 359 360 static const struct renesas_id id_bsid __initconst = { 361 .offset = 0, 362 .mask = 0xff0000, 363 /* 364 * TODO: Upper 4 bits of BSID are for chip version, but the format is 365 * not known at this time so we don't know how to specify eshi and eslo 366 */ 367 }; 368 369 static const struct renesas_id id_rzg2l __initconst = { 370 .offset = 0xa04, 371 .mask = 0xfffffff, 372 }; 373 374 static const struct renesas_id id_prr __initconst = { 375 .offset = 0, 376 .mask = 0xff00, 377 }; 378 379 static const struct of_device_id renesas_ids[] __initconst = { 380 { .compatible = "renesas,bsid", .data = &id_bsid }, 381 { .compatible = "renesas,r9a07g044-sysc", .data = &id_rzg2l }, 382 { .compatible = "renesas,r9a07g054-sysc", .data = &id_rzg2l }, 383 { .compatible = "renesas,prr", .data = &id_prr }, 384 { /* sentinel */ } 385 }; 386 387 static int __init renesas_soc_init(void) 388 { 389 struct soc_device_attribute *soc_dev_attr; 390 unsigned int product, eshi = 0, eslo; 391 const struct renesas_family *family; 392 const struct of_device_id *match; 393 const struct renesas_soc *soc; 394 const struct renesas_id *id; 395 void __iomem *chipid = NULL; 396 const char *rev_prefix = ""; 397 struct soc_device *soc_dev; 398 struct device_node *np; 399 const char *soc_id; 400 int ret; 401 402 match = of_match_node(renesas_socs, of_root); 403 if (!match) 404 return -ENODEV; 405 406 soc_id = strchr(match->compatible, ',') + 1; 407 soc = match->data; 408 family = soc->family; 409 410 np = of_find_matching_node_and_match(NULL, renesas_ids, &match); 411 if (np) { 412 id = match->data; 413 chipid = of_iomap(np, 0); 414 of_node_put(np); 415 } else if (soc->id && family->reg) { 416 /* Try hardcoded CCCR/PRR fallback */ 417 id = &id_prr; 418 chipid = ioremap(family->reg, 4); 419 } 420 421 soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); 422 if (!soc_dev_attr) 423 return -ENOMEM; 424 425 np = of_find_node_by_path("/"); 426 of_property_read_string(np, "model", &soc_dev_attr->machine); 427 of_node_put(np); 428 429 soc_dev_attr->family = kstrdup_const(family->name, GFP_KERNEL); 430 soc_dev_attr->soc_id = kstrdup_const(soc_id, GFP_KERNEL); 431 432 if (chipid) { 433 product = readl(chipid + id->offset); 434 iounmap(chipid); 435 436 if (id == &id_prr) { 437 /* R-Car M3-W ES1.1 incorrectly identifies as ES2.0 */ 438 if ((product & 0x7fff) == 0x5210) 439 product ^= 0x11; 440 /* R-Car M3-W ES1.3 incorrectly identifies as ES2.1 */ 441 if ((product & 0x7fff) == 0x5211) 442 product ^= 0x12; 443 444 eshi = ((product >> 4) & 0x0f) + 1; 445 eslo = product & 0xf; 446 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "ES%u.%u", 447 eshi, eslo); 448 } else if (id == &id_rzg2l) { 449 eshi = ((product >> 28) & 0x0f); 450 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%u", 451 eshi); 452 rev_prefix = "Rev "; 453 } 454 455 if (soc->id && 456 ((product & id->mask) >> __ffs(id->mask)) != soc->id) { 457 pr_warn("SoC mismatch (product = 0x%x)\n", product); 458 ret = -ENODEV; 459 goto free_soc_dev_attr; 460 } 461 } 462 463 pr_info("Detected Renesas %s %s %s%s\n", soc_dev_attr->family, 464 soc_dev_attr->soc_id, rev_prefix, soc_dev_attr->revision ?: ""); 465 466 soc_dev = soc_device_register(soc_dev_attr); 467 if (IS_ERR(soc_dev)) { 468 ret = PTR_ERR(soc_dev); 469 goto free_soc_dev_attr; 470 } 471 472 return 0; 473 474 free_soc_dev_attr: 475 kfree(soc_dev_attr->revision); 476 kfree_const(soc_dev_attr->soc_id); 477 kfree_const(soc_dev_attr->family); 478 kfree(soc_dev_attr); 479 return ret; 480 } 481 early_initcall(renesas_soc_init); 482