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_rmobile __initconst __maybe_unused = { 37 .name = "R-Mobile", 38 .reg = 0xe600101c, /* CCCR (Common Chip Code Register) */ 39 }; 40 41 static const struct renesas_family fam_rza1 __initconst __maybe_unused = { 42 .name = "RZ/A1", 43 }; 44 45 static const struct renesas_family fam_rza2 __initconst __maybe_unused = { 46 .name = "RZ/A2", 47 }; 48 49 static const struct renesas_family fam_rzg1 __initconst __maybe_unused = { 50 .name = "RZ/G1", 51 .reg = 0xff000044, /* PRR (Product Register) */ 52 }; 53 54 static const struct renesas_family fam_rzg2 __initconst __maybe_unused = { 55 .name = "RZ/G2", 56 .reg = 0xfff00044, /* PRR (Product Register) */ 57 }; 58 59 static const struct renesas_family fam_rzg2l __initconst __maybe_unused = { 60 .name = "RZ/G2L", 61 }; 62 63 static const struct renesas_family fam_shmobile __initconst __maybe_unused = { 64 .name = "SH-Mobile", 65 .reg = 0xe600101c, /* CCCR (Common Chip Code Register) */ 66 }; 67 68 69 struct renesas_soc { 70 const struct renesas_family *family; 71 u32 id; 72 }; 73 74 static const struct renesas_soc soc_rz_a1h __initconst __maybe_unused = { 75 .family = &fam_rza1, 76 }; 77 78 static const struct renesas_soc soc_rz_a2m __initconst __maybe_unused = { 79 .family = &fam_rza2, 80 .id = 0x3b, 81 }; 82 83 static const struct renesas_soc soc_rmobile_ape6 __initconst __maybe_unused = { 84 .family = &fam_rmobile, 85 .id = 0x3f, 86 }; 87 88 static const struct renesas_soc soc_rmobile_a1 __initconst __maybe_unused = { 89 .family = &fam_rmobile, 90 .id = 0x40, 91 }; 92 93 static const struct renesas_soc soc_rz_g1h __initconst __maybe_unused = { 94 .family = &fam_rzg1, 95 .id = 0x45, 96 }; 97 98 static const struct renesas_soc soc_rz_g1m __initconst __maybe_unused = { 99 .family = &fam_rzg1, 100 .id = 0x47, 101 }; 102 103 static const struct renesas_soc soc_rz_g1n __initconst __maybe_unused = { 104 .family = &fam_rzg1, 105 .id = 0x4b, 106 }; 107 108 static const struct renesas_soc soc_rz_g1e __initconst __maybe_unused = { 109 .family = &fam_rzg1, 110 .id = 0x4c, 111 }; 112 113 static const struct renesas_soc soc_rz_g1c __initconst __maybe_unused = { 114 .family = &fam_rzg1, 115 .id = 0x53, 116 }; 117 118 static const struct renesas_soc soc_rz_g2m __initconst __maybe_unused = { 119 .family = &fam_rzg2, 120 .id = 0x52, 121 }; 122 123 static const struct renesas_soc soc_rz_g2n __initconst __maybe_unused = { 124 .family = &fam_rzg2, 125 .id = 0x55, 126 }; 127 128 static const struct renesas_soc soc_rz_g2e __initconst __maybe_unused = { 129 .family = &fam_rzg2, 130 .id = 0x57, 131 }; 132 133 static const struct renesas_soc soc_rz_g2h __initconst __maybe_unused = { 134 .family = &fam_rzg2, 135 .id = 0x4f, 136 }; 137 138 static const struct renesas_soc soc_rz_g2l __initconst __maybe_unused = { 139 .family = &fam_rzg2l, 140 .id = 0x841c447, 141 }; 142 143 static const struct renesas_soc soc_rcar_m1a __initconst __maybe_unused = { 144 .family = &fam_rcar_gen1, 145 }; 146 147 static const struct renesas_soc soc_rcar_h1 __initconst __maybe_unused = { 148 .family = &fam_rcar_gen1, 149 .id = 0x3b, 150 }; 151 152 static const struct renesas_soc soc_rcar_h2 __initconst __maybe_unused = { 153 .family = &fam_rcar_gen2, 154 .id = 0x45, 155 }; 156 157 static const struct renesas_soc soc_rcar_m2_w __initconst __maybe_unused = { 158 .family = &fam_rcar_gen2, 159 .id = 0x47, 160 }; 161 162 static const struct renesas_soc soc_rcar_v2h __initconst __maybe_unused = { 163 .family = &fam_rcar_gen2, 164 .id = 0x4a, 165 }; 166 167 static const struct renesas_soc soc_rcar_m2_n __initconst __maybe_unused = { 168 .family = &fam_rcar_gen2, 169 .id = 0x4b, 170 }; 171 172 static const struct renesas_soc soc_rcar_e2 __initconst __maybe_unused = { 173 .family = &fam_rcar_gen2, 174 .id = 0x4c, 175 }; 176 177 static const struct renesas_soc soc_rcar_h3 __initconst __maybe_unused = { 178 .family = &fam_rcar_gen3, 179 .id = 0x4f, 180 }; 181 182 static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = { 183 .family = &fam_rcar_gen3, 184 .id = 0x52, 185 }; 186 187 static const struct renesas_soc soc_rcar_m3_n __initconst __maybe_unused = { 188 .family = &fam_rcar_gen3, 189 .id = 0x55, 190 }; 191 192 static const struct renesas_soc soc_rcar_v3m __initconst __maybe_unused = { 193 .family = &fam_rcar_gen3, 194 .id = 0x54, 195 }; 196 197 static const struct renesas_soc soc_rcar_v3h __initconst __maybe_unused = { 198 .family = &fam_rcar_gen3, 199 .id = 0x56, 200 }; 201 202 static const struct renesas_soc soc_rcar_e3 __initconst __maybe_unused = { 203 .family = &fam_rcar_gen3, 204 .id = 0x57, 205 }; 206 207 static const struct renesas_soc soc_rcar_d3 __initconst __maybe_unused = { 208 .family = &fam_rcar_gen3, 209 .id = 0x58, 210 }; 211 212 static const struct renesas_soc soc_rcar_v3u __initconst __maybe_unused = { 213 .family = &fam_rcar_gen3, 214 .id = 0x59, 215 }; 216 217 static const struct renesas_soc soc_shmobile_ag5 __initconst __maybe_unused = { 218 .family = &fam_shmobile, 219 .id = 0x37, 220 }; 221 222 223 static const struct of_device_id renesas_socs[] __initconst = { 224 #ifdef CONFIG_ARCH_R7S72100 225 { .compatible = "renesas,r7s72100", .data = &soc_rz_a1h }, 226 #endif 227 #ifdef CONFIG_ARCH_R7S9210 228 { .compatible = "renesas,r7s9210", .data = &soc_rz_a2m }, 229 #endif 230 #ifdef CONFIG_ARCH_R8A73A4 231 { .compatible = "renesas,r8a73a4", .data = &soc_rmobile_ape6 }, 232 #endif 233 #ifdef CONFIG_ARCH_R8A7740 234 { .compatible = "renesas,r8a7740", .data = &soc_rmobile_a1 }, 235 #endif 236 #ifdef CONFIG_ARCH_R8A7742 237 { .compatible = "renesas,r8a7742", .data = &soc_rz_g1h }, 238 #endif 239 #ifdef CONFIG_ARCH_R8A7743 240 { .compatible = "renesas,r8a7743", .data = &soc_rz_g1m }, 241 #endif 242 #ifdef CONFIG_ARCH_R8A7744 243 { .compatible = "renesas,r8a7744", .data = &soc_rz_g1n }, 244 #endif 245 #ifdef CONFIG_ARCH_R8A7745 246 { .compatible = "renesas,r8a7745", .data = &soc_rz_g1e }, 247 #endif 248 #ifdef CONFIG_ARCH_R8A77470 249 { .compatible = "renesas,r8a77470", .data = &soc_rz_g1c }, 250 #endif 251 #ifdef CONFIG_ARCH_R8A774A1 252 { .compatible = "renesas,r8a774a1", .data = &soc_rz_g2m }, 253 #endif 254 #ifdef CONFIG_ARCH_R8A774B1 255 { .compatible = "renesas,r8a774b1", .data = &soc_rz_g2n }, 256 #endif 257 #ifdef CONFIG_ARCH_R8A774C0 258 { .compatible = "renesas,r8a774c0", .data = &soc_rz_g2e }, 259 #endif 260 #ifdef CONFIG_ARCH_R8A774E1 261 { .compatible = "renesas,r8a774e1", .data = &soc_rz_g2h }, 262 #endif 263 #ifdef CONFIG_ARCH_R8A7778 264 { .compatible = "renesas,r8a7778", .data = &soc_rcar_m1a }, 265 #endif 266 #ifdef CONFIG_ARCH_R8A7779 267 { .compatible = "renesas,r8a7779", .data = &soc_rcar_h1 }, 268 #endif 269 #ifdef CONFIG_ARCH_R8A7790 270 { .compatible = "renesas,r8a7790", .data = &soc_rcar_h2 }, 271 #endif 272 #ifdef CONFIG_ARCH_R8A7791 273 { .compatible = "renesas,r8a7791", .data = &soc_rcar_m2_w }, 274 #endif 275 #ifdef CONFIG_ARCH_R8A7792 276 { .compatible = "renesas,r8a7792", .data = &soc_rcar_v2h }, 277 #endif 278 #ifdef CONFIG_ARCH_R8A7793 279 { .compatible = "renesas,r8a7793", .data = &soc_rcar_m2_n }, 280 #endif 281 #ifdef CONFIG_ARCH_R8A7794 282 { .compatible = "renesas,r8a7794", .data = &soc_rcar_e2 }, 283 #endif 284 #if defined(CONFIG_ARCH_R8A77950) || defined(CONFIG_ARCH_R8A77951) 285 { .compatible = "renesas,r8a7795", .data = &soc_rcar_h3 }, 286 #endif 287 #ifdef CONFIG_ARCH_R8A77960 288 { .compatible = "renesas,r8a7796", .data = &soc_rcar_m3_w }, 289 #endif 290 #ifdef CONFIG_ARCH_R8A77961 291 { .compatible = "renesas,r8a77961", .data = &soc_rcar_m3_w }, 292 #endif 293 #ifdef CONFIG_ARCH_R8A77965 294 { .compatible = "renesas,r8a77965", .data = &soc_rcar_m3_n }, 295 #endif 296 #ifdef CONFIG_ARCH_R8A77970 297 { .compatible = "renesas,r8a77970", .data = &soc_rcar_v3m }, 298 #endif 299 #ifdef CONFIG_ARCH_R8A77980 300 { .compatible = "renesas,r8a77980", .data = &soc_rcar_v3h }, 301 #endif 302 #ifdef CONFIG_ARCH_R8A77990 303 { .compatible = "renesas,r8a77990", .data = &soc_rcar_e3 }, 304 #endif 305 #ifdef CONFIG_ARCH_R8A77995 306 { .compatible = "renesas,r8a77995", .data = &soc_rcar_d3 }, 307 #endif 308 #ifdef CONFIG_ARCH_R8A779A0 309 { .compatible = "renesas,r8a779a0", .data = &soc_rcar_v3u }, 310 #endif 311 #if defined(CONFIG_ARCH_R9A07G044) 312 { .compatible = "renesas,r9a07g044", .data = &soc_rz_g2l }, 313 #endif 314 #ifdef CONFIG_ARCH_SH73A0 315 { .compatible = "renesas,sh73a0", .data = &soc_shmobile_ag5 }, 316 #endif 317 { /* sentinel */ } 318 }; 319 320 static int __init renesas_soc_init(void) 321 { 322 struct soc_device_attribute *soc_dev_attr; 323 const struct renesas_family *family; 324 const struct of_device_id *match; 325 const struct renesas_soc *soc; 326 void __iomem *chipid = NULL; 327 struct soc_device *soc_dev; 328 struct device_node *np; 329 unsigned int product, eshi = 0, eslo; 330 331 match = of_match_node(renesas_socs, of_root); 332 if (!match) 333 return -ENODEV; 334 335 soc = match->data; 336 family = soc->family; 337 338 np = of_find_compatible_node(NULL, NULL, "renesas,bsid"); 339 if (np) { 340 chipid = of_iomap(np, 0); 341 of_node_put(np); 342 343 if (chipid) { 344 product = readl(chipid); 345 iounmap(chipid); 346 347 if (soc->id && ((product >> 16) & 0xff) != soc->id) { 348 pr_warn("SoC mismatch (product = 0x%x)\n", 349 product); 350 return -ENODEV; 351 } 352 } 353 354 /* 355 * TODO: Upper 4 bits of BSID are for chip version, but the 356 * format is not known at this time so we don't know how to 357 * specify eshi and eslo 358 */ 359 360 goto done; 361 } 362 363 np = of_find_compatible_node(NULL, NULL, "renesas,r9a07g044-sysc"); 364 if (np) { 365 chipid = of_iomap(np, 0); 366 of_node_put(np); 367 368 if (chipid) { 369 product = readl(chipid + 0x0a04); 370 iounmap(chipid); 371 372 if (soc->id && (product & 0xfffffff) != soc->id) { 373 pr_warn("SoC mismatch (product = 0x%x)\n", 374 product); 375 return -ENODEV; 376 } 377 } 378 379 goto done; 380 } 381 382 /* Try PRR first, then hardcoded fallback */ 383 np = of_find_compatible_node(NULL, NULL, "renesas,prr"); 384 if (np) { 385 chipid = of_iomap(np, 0); 386 of_node_put(np); 387 } else if (soc->id && family->reg) { 388 chipid = ioremap(family->reg, 4); 389 } 390 if (chipid) { 391 product = readl(chipid); 392 iounmap(chipid); 393 /* R-Car M3-W ES1.1 incorrectly identifies as ES2.0 */ 394 if ((product & 0x7fff) == 0x5210) 395 product ^= 0x11; 396 /* R-Car M3-W ES1.3 incorrectly identifies as ES2.1 */ 397 if ((product & 0x7fff) == 0x5211) 398 product ^= 0x12; 399 if (soc->id && ((product >> 8) & 0xff) != soc->id) { 400 pr_warn("SoC mismatch (product = 0x%x)\n", product); 401 return -ENODEV; 402 } 403 eshi = ((product >> 4) & 0x0f) + 1; 404 eslo = product & 0xf; 405 } 406 407 done: 408 soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); 409 if (!soc_dev_attr) 410 return -ENOMEM; 411 412 np = of_find_node_by_path("/"); 413 of_property_read_string(np, "model", &soc_dev_attr->machine); 414 of_node_put(np); 415 416 soc_dev_attr->family = kstrdup_const(family->name, GFP_KERNEL); 417 soc_dev_attr->soc_id = kstrdup_const(strchr(match->compatible, ',') + 1, 418 GFP_KERNEL); 419 if (eshi) 420 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "ES%u.%u", eshi, 421 eslo); 422 423 pr_info("Detected Renesas %s %s %s\n", soc_dev_attr->family, 424 soc_dev_attr->soc_id, soc_dev_attr->revision ?: ""); 425 426 soc_dev = soc_device_register(soc_dev_attr); 427 if (IS_ERR(soc_dev)) { 428 kfree(soc_dev_attr->revision); 429 kfree_const(soc_dev_attr->soc_id); 430 kfree_const(soc_dev_attr->family); 431 kfree(soc_dev_attr); 432 return PTR_ERR(soc_dev); 433 } 434 435 return 0; 436 } 437 early_initcall(renesas_soc_init); 438