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