cpu.c revision 1.99
1 /* $NetBSD: cpu.c,v 1.99 2013/09/07 23:10:02 matt Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Mark Brinicombe. 5 * Copyright (c) 1995 Brini. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Brini. 19 * 4. The name of the company nor the name of the author may be used to 20 * endorse or promote products derived from this software without specific 21 * prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED 24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * RiscBSD kernel project 36 * 37 * cpu.c 38 * 39 * Probing and configuration for the master CPU 40 * 41 * Created : 10/10/95 42 */ 43 44 #include "opt_armfpe.h" 45 #include "opt_multiprocessor.h" 46 47 #include <sys/param.h> 48 49 __KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.99 2013/09/07 23:10:02 matt Exp $"); 50 51 #include <sys/systm.h> 52 #include <sys/conf.h> 53 #include <sys/cpu.h> 54 #include <sys/device.h> 55 #include <sys/kmem.h> 56 #include <sys/proc.h> 57 58 #include <uvm/uvm_extern.h> 59 60 #include <arm/locore.h> 61 #include <arm/undefined.h> 62 63 char cpu_model[256]; 64 extern const char *cpu_arch; 65 66 #ifdef MULTIPROCESSOR 67 volatile u_int arm_cpu_hatched = 0; 68 u_int arm_cpu_max = 0; 69 uint32_t arm_cpu_mbox __cacheline_aligned = 0; 70 uint32_t arm_cpu_marker __cacheline_aligned = 1; 71 #endif 72 73 /* Prototypes */ 74 void identify_arm_cpu(device_t dv, struct cpu_info *); 75 void identify_cortex_caches(device_t dv); 76 void identify_features(device_t dv); 77 78 /* 79 * Identify the master (boot) CPU 80 */ 81 82 void 83 cpu_attach(device_t dv, cpuid_t id) 84 { 85 const char * const xname = device_xname(dv); 86 struct cpu_info *ci; 87 88 if (id == 0) { 89 ci = curcpu(); 90 91 /* Get the CPU ID from coprocessor 15 */ 92 93 ci->ci_arm_cpuid = cpu_id(); 94 ci->ci_arm_cputype = ci->ci_arm_cpuid & CPU_ID_CPU_MASK; 95 ci->ci_arm_cpurev = ci->ci_arm_cpuid & CPU_ID_REVISION_MASK; 96 } else { 97 #ifdef MULTIPROCESSOR 98 KASSERT(cpu_info[id] == NULL); 99 ci = kmem_zalloc(sizeof(*ci), KM_SLEEP); 100 KASSERT(ci != NULL); 101 ci->ci_cpl = IPL_HIGH; 102 ci->ci_cpuid = id; 103 ci->ci_data.cpu_core_id = id; 104 ci->ci_data.cpu_cc_freq = cpu_info_store.ci_data.cpu_cc_freq; 105 ci->ci_arm_cpuid = cpu_info_store.ci_arm_cpuid; 106 ci->ci_arm_cputype = cpu_info_store.ci_arm_cputype; 107 ci->ci_arm_cpurev = cpu_info_store.ci_arm_cpurev; 108 cpu_info[ci->ci_cpuid] = ci; 109 if ((arm_cpu_hatched & (1 << id)) == 0) { 110 ci->ci_dev = dv; 111 dv->dv_private = ci; 112 aprint_naive(": disabled\n"); 113 aprint_normal(": disabled (unresponsive)\n"); 114 return; 115 } 116 #else 117 aprint_naive(": disabled\n"); 118 aprint_normal(": disabled (uniprocessor kernel)\n"); 119 return; 120 #endif 121 } 122 123 ci->ci_dev = dv; 124 dv->dv_private = ci; 125 126 evcnt_attach_dynamic(&ci->ci_arm700bugcount, EVCNT_TYPE_MISC, 127 NULL, xname, "arm700swibug"); 128 129 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_WRTBUF_0], EVCNT_TYPE_TRAP, 130 NULL, xname, "vector abort"); 131 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_WRTBUF_1], EVCNT_TYPE_TRAP, 132 NULL, xname, "terminal abort"); 133 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_BUSERR_0], EVCNT_TYPE_TRAP, 134 NULL, xname, "external linefetch abort (S)"); 135 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_BUSERR_1], EVCNT_TYPE_TRAP, 136 NULL, xname, "external linefetch abort (P)"); 137 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_BUSERR_2], EVCNT_TYPE_TRAP, 138 NULL, xname, "external non-linefetch abort (S)"); 139 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_BUSERR_3], EVCNT_TYPE_TRAP, 140 NULL, xname, "external non-linefetch abort (P)"); 141 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_BUSTRNL1], EVCNT_TYPE_TRAP, 142 NULL, xname, "external translation abort (L1)"); 143 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_BUSTRNL2], EVCNT_TYPE_TRAP, 144 NULL, xname, "external translation abort (L2)"); 145 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_ALIGN_0], EVCNT_TYPE_TRAP, 146 NULL, xname, "alignment abort (0)"); 147 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_ALIGN_1], EVCNT_TYPE_TRAP, 148 NULL, xname, "alignment abort (1)"); 149 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_TRANS_S], EVCNT_TYPE_TRAP, 150 NULL, xname, "translation abort (S)"); 151 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_TRANS_P], EVCNT_TYPE_TRAP, 152 NULL, xname, "translation abort (P)"); 153 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_DOMAIN_S], EVCNT_TYPE_TRAP, 154 NULL, xname, "domain abort (S)"); 155 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_DOMAIN_P], EVCNT_TYPE_TRAP, 156 NULL, xname, "domain abort (P)"); 157 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_PERM_S], EVCNT_TYPE_TRAP, 158 NULL, xname, "permission abort (S)"); 159 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_PERM_P], EVCNT_TYPE_TRAP, 160 NULL, xname, "permission abort (P)"); 161 162 #ifdef MULTIPROCESSOR 163 /* 164 * and we are done if this is a secondary processor. 165 */ 166 if (!CPU_IS_PRIMARY(ci)) { 167 aprint_naive(": %s\n", cpu_model); 168 aprint_normal(": %s\n", cpu_model); 169 mi_cpu_attach(ci); 170 return; 171 } 172 #endif 173 174 identify_arm_cpu(dv, ci); 175 176 #ifdef CPU_STRONGARM 177 if (ci->ci_arm_cputype == CPU_ID_SA110 && 178 ci->ci_arm_cpurev < 3) { 179 aprint_normal_dev(dv, "SA-110 with bugged STM^ instruction\n"); 180 } 181 #endif 182 183 #ifdef CPU_ARM8 184 if ((ci->ci_arm_cpuid & CPU_ID_CPU_MASK) == CPU_ID_ARM810) { 185 int clock = arm8_clock_config(0, 0); 186 char *fclk; 187 aprint_normal_dev(dv, "ARM810 cp15=%02x", clock); 188 aprint_normal(" clock:%s", (clock & 1) ? " dynamic" : ""); 189 aprint_normal("%s", (clock & 2) ? " sync" : ""); 190 switch ((clock >> 2) & 3) { 191 case 0: 192 fclk = "bus clock"; 193 break; 194 case 1: 195 fclk = "ref clock"; 196 break; 197 case 3: 198 fclk = "pll"; 199 break; 200 default: 201 fclk = "illegal"; 202 break; 203 } 204 aprint_normal(" fclk source=%s\n", fclk); 205 } 206 #endif 207 208 vfp_attach(); /* XXX SMP */ 209 } 210 211 enum cpu_class { 212 CPU_CLASS_NONE, 213 CPU_CLASS_ARM2, 214 CPU_CLASS_ARM2AS, 215 CPU_CLASS_ARM3, 216 CPU_CLASS_ARM6, 217 CPU_CLASS_ARM7, 218 CPU_CLASS_ARM7TDMI, 219 CPU_CLASS_ARM8, 220 CPU_CLASS_ARM9TDMI, 221 CPU_CLASS_ARM9ES, 222 CPU_CLASS_ARM9EJS, 223 CPU_CLASS_ARM10E, 224 CPU_CLASS_ARM10EJ, 225 CPU_CLASS_SA1, 226 CPU_CLASS_XSCALE, 227 CPU_CLASS_ARM11J, 228 CPU_CLASS_ARMV4, 229 CPU_CLASS_CORTEX, 230 CPU_CLASS_PJ4B, 231 }; 232 233 static const char * const generic_steppings[16] = { 234 "rev 0", "rev 1", "rev 2", "rev 3", 235 "rev 4", "rev 5", "rev 6", "rev 7", 236 "rev 8", "rev 9", "rev 10", "rev 11", 237 "rev 12", "rev 13", "rev 14", "rev 15", 238 }; 239 240 static const char * const pN_steppings[16] = { 241 "*p0", "*p1", "*p2", "*p3", "*p4", "*p5", "*p6", "*p7", 242 "*p8", "*p9", "*p10", "*p11", "*p12", "*p13", "*p14", "*p15", 243 }; 244 245 static const char * const sa110_steppings[16] = { 246 "rev 0", "step J", "step K", "step S", 247 "step T", "rev 5", "rev 6", "rev 7", 248 "rev 8", "rev 9", "rev 10", "rev 11", 249 "rev 12", "rev 13", "rev 14", "rev 15", 250 }; 251 252 static const char * const sa1100_steppings[16] = { 253 "rev 0", "step B", "step C", "rev 3", 254 "rev 4", "rev 5", "rev 6", "rev 7", 255 "step D", "step E", "rev 10" "step G", 256 "rev 12", "rev 13", "rev 14", "rev 15", 257 }; 258 259 static const char * const sa1110_steppings[16] = { 260 "step A-0", "rev 1", "rev 2", "rev 3", 261 "step B-0", "step B-1", "step B-2", "step B-3", 262 "step B-4", "step B-5", "rev 10", "rev 11", 263 "rev 12", "rev 13", "rev 14", "rev 15", 264 }; 265 266 static const char * const ixp12x0_steppings[16] = { 267 "(IXP1200 step A)", "(IXP1200 step B)", 268 "rev 2", "(IXP1200 step C)", 269 "(IXP1200 step D)", "(IXP1240/1250 step A)", 270 "(IXP1240 step B)", "(IXP1250 step B)", 271 "rev 8", "rev 9", "rev 10", "rev 11", 272 "rev 12", "rev 13", "rev 14", "rev 15", 273 }; 274 275 static const char * const xscale_steppings[16] = { 276 "step A-0", "step A-1", "step B-0", "step C-0", 277 "step D-0", "rev 5", "rev 6", "rev 7", 278 "rev 8", "rev 9", "rev 10", "rev 11", 279 "rev 12", "rev 13", "rev 14", "rev 15", 280 }; 281 282 static const char * const i80321_steppings[16] = { 283 "step A-0", "step B-0", "rev 2", "rev 3", 284 "rev 4", "rev 5", "rev 6", "rev 7", 285 "rev 8", "rev 9", "rev 10", "rev 11", 286 "rev 12", "rev 13", "rev 14", "rev 15", 287 }; 288 289 static const char * const i80219_steppings[16] = { 290 "step A-0", "rev 1", "rev 2", "rev 3", 291 "rev 4", "rev 5", "rev 6", "rev 7", 292 "rev 8", "rev 9", "rev 10", "rev 11", 293 "rev 12", "rev 13", "rev 14", "rev 15", 294 }; 295 296 /* Steppings for PXA2[15]0 */ 297 static const char * const pxa2x0_steppings[16] = { 298 "step A-0", "step A-1", "step B-0", "step B-1", 299 "step B-2", "step C-0", "rev 6", "rev 7", 300 "rev 8", "rev 9", "rev 10", "rev 11", 301 "rev 12", "rev 13", "rev 14", "rev 15", 302 }; 303 304 /* Steppings for PXA255/26x. 305 * rev 5: PXA26x B0, rev 6: PXA255 A0 306 */ 307 static const char * const pxa255_steppings[16] = { 308 "rev 0", "rev 1", "rev 2", "step A-0", 309 "rev 4", "step B-0", "step A-0", "rev 7", 310 "rev 8", "rev 9", "rev 10", "rev 11", 311 "rev 12", "rev 13", "rev 14", "rev 15", 312 }; 313 314 /* Stepping for PXA27x */ 315 static const char * const pxa27x_steppings[16] = { 316 "step A-0", "step A-1", "step B-0", "step B-1", 317 "step C-0", "rev 5", "rev 6", "rev 7", 318 "rev 8", "rev 9", "rev 10", "rev 11", 319 "rev 12", "rev 13", "rev 14", "rev 15", 320 }; 321 322 static const char * const ixp425_steppings[16] = { 323 "step 0", "rev 1", "rev 2", "rev 3", 324 "rev 4", "rev 5", "rev 6", "rev 7", 325 "rev 8", "rev 9", "rev 10", "rev 11", 326 "rev 12", "rev 13", "rev 14", "rev 15", 327 }; 328 329 struct cpuidtab { 330 uint32_t cpuid; 331 enum cpu_class cpu_class; 332 const char *cpu_classname; 333 const char * const *cpu_steppings; 334 char cpu_arch[8]; 335 }; 336 337 const struct cpuidtab cpuids[] = { 338 { CPU_ID_ARM2, CPU_CLASS_ARM2, "ARM2", 339 generic_steppings, "2" }, 340 { CPU_ID_ARM250, CPU_CLASS_ARM2AS, "ARM250", 341 generic_steppings, "2" }, 342 343 { CPU_ID_ARM3, CPU_CLASS_ARM3, "ARM3", 344 generic_steppings, "2A" }, 345 346 { CPU_ID_ARM600, CPU_CLASS_ARM6, "ARM600", 347 generic_steppings, "3" }, 348 { CPU_ID_ARM610, CPU_CLASS_ARM6, "ARM610", 349 generic_steppings, "3" }, 350 { CPU_ID_ARM620, CPU_CLASS_ARM6, "ARM620", 351 generic_steppings, "3" }, 352 353 { CPU_ID_ARM700, CPU_CLASS_ARM7, "ARM700", 354 generic_steppings, "3" }, 355 { CPU_ID_ARM710, CPU_CLASS_ARM7, "ARM710", 356 generic_steppings, "3" }, 357 { CPU_ID_ARM7500, CPU_CLASS_ARM7, "ARM7500", 358 generic_steppings, "3" }, 359 { CPU_ID_ARM710A, CPU_CLASS_ARM7, "ARM710a", 360 generic_steppings, "3" }, 361 { CPU_ID_ARM7500FE, CPU_CLASS_ARM7, "ARM7500FE", 362 generic_steppings, "3" }, 363 364 { CPU_ID_ARM810, CPU_CLASS_ARM8, "ARM810", 365 generic_steppings, "4" }, 366 367 { CPU_ID_SA110, CPU_CLASS_SA1, "SA-110", 368 sa110_steppings, "4" }, 369 { CPU_ID_SA1100, CPU_CLASS_SA1, "SA-1100", 370 sa1100_steppings, "4" }, 371 { CPU_ID_SA1110, CPU_CLASS_SA1, "SA-1110", 372 sa1110_steppings, "4" }, 373 374 { CPU_ID_FA526, CPU_CLASS_ARMV4, "FA526", 375 generic_steppings, "4" }, 376 377 { CPU_ID_IXP1200, CPU_CLASS_SA1, "IXP1200", 378 ixp12x0_steppings, "4" }, 379 380 { CPU_ID_ARM710T, CPU_CLASS_ARM7TDMI, "ARM710T", 381 generic_steppings, "4T" }, 382 { CPU_ID_ARM720T, CPU_CLASS_ARM7TDMI, "ARM720T", 383 generic_steppings, "4T" }, 384 { CPU_ID_ARM740T8K, CPU_CLASS_ARM7TDMI, "ARM740T (8 KB cache)", 385 generic_steppings, "4T" }, 386 { CPU_ID_ARM740T4K, CPU_CLASS_ARM7TDMI, "ARM740T (4 KB cache)", 387 generic_steppings, "4T" }, 388 { CPU_ID_ARM920T, CPU_CLASS_ARM9TDMI, "ARM920T", 389 generic_steppings, "4T" }, 390 { CPU_ID_ARM922T, CPU_CLASS_ARM9TDMI, "ARM922T", 391 generic_steppings, "4T" }, 392 { CPU_ID_ARM940T, CPU_CLASS_ARM9TDMI, "ARM940T", 393 generic_steppings, "4T" }, 394 { CPU_ID_TI925T, CPU_CLASS_ARM9TDMI, "TI ARM925T", 395 generic_steppings, "4T" }, 396 397 { CPU_ID_ARM946ES, CPU_CLASS_ARM9ES, "ARM946E-S", 398 generic_steppings, "5TE" }, 399 { CPU_ID_ARM966ES, CPU_CLASS_ARM9ES, "ARM966E-S", 400 generic_steppings, "5TE" }, 401 { CPU_ID_ARM966ESR1, CPU_CLASS_ARM9ES, "ARM966E-S", 402 generic_steppings, "5TE" }, 403 { CPU_ID_MV88SV131, CPU_CLASS_ARM9ES, "Sheeva 88SV131", 404 generic_steppings, "5TE" }, 405 { CPU_ID_MV88FR571_VD, CPU_CLASS_ARM9ES, "Sheeva 88FR571-vd", 406 generic_steppings, "5TE" }, 407 408 { CPU_ID_80200, CPU_CLASS_XSCALE, "i80200", 409 xscale_steppings, "5TE" }, 410 411 { CPU_ID_80321_400, CPU_CLASS_XSCALE, "i80321 400MHz", 412 i80321_steppings, "5TE" }, 413 { CPU_ID_80321_600, CPU_CLASS_XSCALE, "i80321 600MHz", 414 i80321_steppings, "5TE" }, 415 { CPU_ID_80321_400_B0, CPU_CLASS_XSCALE, "i80321 400MHz", 416 i80321_steppings, "5TE" }, 417 { CPU_ID_80321_600_B0, CPU_CLASS_XSCALE, "i80321 600MHz", 418 i80321_steppings, "5TE" }, 419 420 { CPU_ID_80219_400, CPU_CLASS_XSCALE, "i80219 400MHz", 421 i80219_steppings, "5TE" }, 422 { CPU_ID_80219_600, CPU_CLASS_XSCALE, "i80219 600MHz", 423 i80219_steppings, "5TE" }, 424 425 { CPU_ID_PXA27X, CPU_CLASS_XSCALE, "PXA27x", 426 pxa27x_steppings, "5TE" }, 427 { CPU_ID_PXA250A, CPU_CLASS_XSCALE, "PXA250", 428 pxa2x0_steppings, "5TE" }, 429 { CPU_ID_PXA210A, CPU_CLASS_XSCALE, "PXA210", 430 pxa2x0_steppings, "5TE" }, 431 { CPU_ID_PXA250B, CPU_CLASS_XSCALE, "PXA250", 432 pxa2x0_steppings, "5TE" }, 433 { CPU_ID_PXA210B, CPU_CLASS_XSCALE, "PXA210", 434 pxa2x0_steppings, "5TE" }, 435 { CPU_ID_PXA250C, CPU_CLASS_XSCALE, "PXA255/26x", 436 pxa255_steppings, "5TE" }, 437 { CPU_ID_PXA210C, CPU_CLASS_XSCALE, "PXA210", 438 pxa2x0_steppings, "5TE" }, 439 440 { CPU_ID_IXP425_533, CPU_CLASS_XSCALE, "IXP425 533MHz", 441 ixp425_steppings, "5TE" }, 442 { CPU_ID_IXP425_400, CPU_CLASS_XSCALE, "IXP425 400MHz", 443 ixp425_steppings, "5TE" }, 444 { CPU_ID_IXP425_266, CPU_CLASS_XSCALE, "IXP425 266MHz", 445 ixp425_steppings, "5TE" }, 446 447 { CPU_ID_ARM1020E, CPU_CLASS_ARM10E, "ARM1020E", 448 generic_steppings, "5TE" }, 449 { CPU_ID_ARM1022ES, CPU_CLASS_ARM10E, "ARM1022E-S", 450 generic_steppings, "5TE" }, 451 452 { CPU_ID_ARM1026EJS, CPU_CLASS_ARM10EJ, "ARM1026EJ-S", 453 generic_steppings, "5TEJ" }, 454 { CPU_ID_ARM926EJS, CPU_CLASS_ARM9EJS, "ARM926EJ-S", 455 generic_steppings, "5TEJ" }, 456 457 { CPU_ID_ARM1136JS, CPU_CLASS_ARM11J, "ARM1136J-S r0", 458 pN_steppings, "6J" }, 459 { CPU_ID_ARM1136JSR1, CPU_CLASS_ARM11J, "ARM1136J-S r1", 460 pN_steppings, "6J" }, 461 #if 0 462 /* The ARM1156T2-S only has a memory protection unit */ 463 { CPU_ID_ARM1156T2S, CPU_CLASS_ARM11J, "ARM1156T2-S r0", 464 pN_steppings, "6T2" }, 465 #endif 466 { CPU_ID_ARM1176JZS, CPU_CLASS_ARM11J, "ARM1176JZ-S r0", 467 pN_steppings, "6ZK" }, 468 469 { CPU_ID_ARM11MPCORE, CPU_CLASS_ARM11J, "ARM11 MPCore", 470 generic_steppings, "6K" }, 471 472 { CPU_ID_CORTEXA5R0, CPU_CLASS_CORTEX, "Cortex-A5 r0", 473 pN_steppings, "7A" }, 474 { CPU_ID_CORTEXA7R0, CPU_CLASS_CORTEX, "Cortex-A7 r0", 475 pN_steppings, "7A" }, 476 { CPU_ID_CORTEXA8R1, CPU_CLASS_CORTEX, "Cortex-A8 r1", 477 pN_steppings, "7A" }, 478 { CPU_ID_CORTEXA8R2, CPU_CLASS_CORTEX, "Cortex-A8 r2", 479 pN_steppings, "7A" }, 480 { CPU_ID_CORTEXA8R3, CPU_CLASS_CORTEX, "Cortex-A8 r3", 481 pN_steppings, "7A" }, 482 { CPU_ID_CORTEXA9R2, CPU_CLASS_CORTEX, "Cortex-A9 r2", 483 pN_steppings, "7A" }, 484 { CPU_ID_CORTEXA9R3, CPU_CLASS_CORTEX, "Cortex-A9 r3", 485 pN_steppings, "7A" }, 486 { CPU_ID_CORTEXA9R4, CPU_CLASS_CORTEX, "Cortex-A9 r4", 487 pN_steppings, "7A" }, 488 { CPU_ID_CORTEXA15R2, CPU_CLASS_CORTEX, "Cortex-A15 r2", 489 pN_steppings, "7A" }, 490 { CPU_ID_CORTEXA15R3, CPU_CLASS_CORTEX, "Cortex-A15 r3", 491 pN_steppings, "7A" }, 492 493 { CPU_ID_MV88SV581X_V6, CPU_CLASS_PJ4B, "Sheeva 88SV581x", 494 generic_steppings }, 495 { CPU_ID_ARM_88SV581X_V6, CPU_CLASS_PJ4B, "Sheeva 88SV581x", 496 generic_steppings }, 497 { CPU_ID_MV88SV581X_V7, CPU_CLASS_PJ4B, "Sheeva 88SV581x", 498 generic_steppings }, 499 { CPU_ID_ARM_88SV581X_V7, CPU_CLASS_PJ4B, "Sheeva 88SV581x", 500 generic_steppings }, 501 { CPU_ID_MV88SV584X_V6, CPU_CLASS_PJ4B, "Sheeva 88SV584x", 502 generic_steppings }, 503 { CPU_ID_ARM_88SV584X_V6, CPU_CLASS_PJ4B, "Sheeva 88SV584x", 504 generic_steppings }, 505 { CPU_ID_MV88SV584X_V7, CPU_CLASS_PJ4B, "Sheeva 88SV584x", 506 generic_steppings }, 507 508 509 { 0, CPU_CLASS_NONE, NULL, NULL, "" } 510 }; 511 512 struct cpu_classtab { 513 const char *class_name; 514 const char *class_option; 515 }; 516 517 const struct cpu_classtab cpu_classes[] = { 518 [CPU_CLASS_NONE] = { "unknown", NULL }, 519 [CPU_CLASS_ARM2] = { "ARM2", "CPU_ARM2" }, 520 [CPU_CLASS_ARM2AS] = { "ARM2as", "CPU_ARM250" }, 521 [CPU_CLASS_ARM3] = { "ARM3", "CPU_ARM3" }, 522 [CPU_CLASS_ARM6] = { "ARM6", "CPU_ARM6" }, 523 [CPU_CLASS_ARM7] = { "ARM7", "CPU_ARM7" }, 524 [CPU_CLASS_ARM7TDMI] = { "ARM7TDMI", "CPU_ARM7TDMI" }, 525 [CPU_CLASS_ARM8] = { "ARM8", "CPU_ARM8" }, 526 [CPU_CLASS_ARM9TDMI] = { "ARM9TDMI", NULL }, 527 [CPU_CLASS_ARM9ES] = { "ARM9E-S", "CPU_ARM9E" }, 528 [CPU_CLASS_ARM9EJS] = { "ARM9EJ-S", "CPU_ARM9E" }, 529 [CPU_CLASS_ARM10E] = { "ARM10E", "CPU_ARM10" }, 530 [CPU_CLASS_ARM10EJ] = { "ARM10EJ", "CPU_ARM10" }, 531 [CPU_CLASS_SA1] = { "SA-1", "CPU_SA110" }, 532 [CPU_CLASS_XSCALE] = { "XScale", "CPU_XSCALE_..." }, 533 [CPU_CLASS_ARM11J] = { "ARM11J", "CPU_ARM11" }, 534 [CPU_CLASS_ARMV4] = { "ARMv4", "CPU_ARMV4" }, 535 [CPU_CLASS_CORTEX] = { "Cortex", "CPU_CORTEX" }, 536 [CPU_CLASS_PJ4B] = { "Marvell", "CPU_PJ4B" }, 537 }; 538 539 /* 540 * Report the type of the specified arm processor. This uses the generic and 541 * arm specific information in the CPU structure to identify the processor. 542 * The remaining fields in the CPU structure are filled in appropriately. 543 */ 544 545 static const char * const wtnames[] = { 546 "write-through", 547 "write-back", 548 "write-back", 549 "**unknown 3**", 550 "**unknown 4**", 551 "write-back-locking", /* XXX XScale-specific? */ 552 "write-back-locking-A", 553 "write-back-locking-B", 554 "**unknown 8**", 555 "**unknown 9**", 556 "**unknown 10**", 557 "**unknown 11**", 558 "**unknown 12**", 559 "**unknown 13**", 560 "write-back-locking-C", 561 "write-back-locking-D", 562 }; 563 564 static void 565 print_cache_info(device_t dv, struct arm_cache_info *info, u_int level) 566 { 567 if (info->cache_unified) { 568 aprint_normal_dev(dv, "%dKB/%dB %d-way %s L%u Unified cache\n", 569 info->dcache_size / 1024, 570 info->dcache_line_size, info->dcache_ways, 571 wtnames[info->cache_type], level + 1); 572 } else { 573 aprint_normal_dev(dv, "%dKB/%dB %d-way L%u Instruction cache\n", 574 info->icache_size / 1024, 575 info->icache_line_size, info->icache_ways, level + 1); 576 aprint_normal_dev(dv, "%dKB/%dB %d-way %s L%u Data cache\n", 577 info->dcache_size / 1024, 578 info->dcache_line_size, info->dcache_ways, 579 wtnames[info->cache_type], level + 1); 580 } 581 } 582 583 void 584 identify_arm_cpu(device_t dv, struct cpu_info *ci) 585 { 586 enum cpu_class cpu_class = CPU_CLASS_NONE; 587 const u_int cpuid = ci->ci_arm_cpuid; 588 const char * const xname = device_xname(dv); 589 const char *steppingstr; 590 int i; 591 592 if (cpuid == 0) { 593 aprint_error("Processor failed probe - no CPU ID\n"); 594 return; 595 } 596 597 for (i = 0; cpuids[i].cpuid != 0; i++) 598 if (cpuids[i].cpuid == (cpuid & CPU_ID_CPU_MASK)) { 599 cpu_class = cpuids[i].cpu_class; 600 cpu_arch = cpuids[i].cpu_arch; 601 steppingstr = cpuids[i].cpu_steppings[cpuid & 602 CPU_ID_REVISION_MASK]; 603 snprintf(cpu_model, sizeof(cpu_model), 604 "%s%s%s (%s V%s core)", cpuids[i].cpu_classname, 605 steppingstr[0] == '*' ? "" : " ", 606 &steppingstr[steppingstr[0] == '*'], 607 cpu_classes[cpu_class].class_name, 608 cpu_arch); 609 break; 610 } 611 612 if (cpuids[i].cpuid == 0) 613 snprintf(cpu_model, sizeof(cpu_model), 614 "unknown CPU (ID = 0x%x)", cpuid); 615 616 if (ci->ci_data.cpu_cc_freq != 0) { 617 char freqbuf[8]; 618 humanize_number(freqbuf, sizeof(freqbuf), ci->ci_data.cpu_cc_freq, 619 "Hz", 1000); 620 621 aprint_naive(": %s %s\n", freqbuf, cpu_model); 622 aprint_normal(": %s %s\n", freqbuf, cpu_model); 623 } else { 624 aprint_naive(": %s\n", cpu_model); 625 aprint_normal(": %s\n", cpu_model); 626 } 627 628 aprint_normal("%s:", xname); 629 630 switch (cpu_class) { 631 case CPU_CLASS_ARM6: 632 case CPU_CLASS_ARM7: 633 case CPU_CLASS_ARM7TDMI: 634 case CPU_CLASS_ARM8: 635 if ((ci->ci_ctrl & CPU_CONTROL_IDC_ENABLE) == 0) 636 aprint_normal(" IDC disabled"); 637 else 638 aprint_normal(" IDC enabled"); 639 break; 640 case CPU_CLASS_ARM9TDMI: 641 case CPU_CLASS_ARM9ES: 642 case CPU_CLASS_ARM9EJS: 643 case CPU_CLASS_ARM10E: 644 case CPU_CLASS_ARM10EJ: 645 case CPU_CLASS_SA1: 646 case CPU_CLASS_XSCALE: 647 case CPU_CLASS_ARM11J: 648 case CPU_CLASS_ARMV4: 649 case CPU_CLASS_CORTEX: 650 case CPU_CLASS_PJ4B: 651 if ((ci->ci_ctrl & CPU_CONTROL_DC_ENABLE) == 0) 652 aprint_normal(" DC disabled"); 653 else 654 aprint_normal(" DC enabled"); 655 if ((ci->ci_ctrl & CPU_CONTROL_IC_ENABLE) == 0) 656 aprint_normal(" IC disabled"); 657 else 658 aprint_normal(" IC enabled"); 659 break; 660 default: 661 break; 662 } 663 if ((ci->ci_ctrl & CPU_CONTROL_WBUF_ENABLE) == 0) 664 aprint_normal(" WB disabled"); 665 else 666 aprint_normal(" WB enabled"); 667 668 if (ci->ci_ctrl & CPU_CONTROL_LABT_ENABLE) 669 aprint_normal(" LABT"); 670 else 671 aprint_normal(" EABT"); 672 673 if (ci->ci_ctrl & CPU_CONTROL_BPRD_ENABLE) 674 aprint_normal(" branch prediction enabled"); 675 676 aprint_normal("\n"); 677 678 if (CPU_ID_CORTEX_P(cpuid) || CPU_ID_ARM11_P(cpuid) || CPU_ID_MV88SV58XX_P(cpuid)) { 679 identify_features(dv); 680 } 681 682 /* Print cache info. */ 683 if (arm_pcache.icache_line_size != 0 || arm_pcache.dcache_line_size != 0) { 684 print_cache_info(dv, &arm_pcache, 0); 685 } 686 if (arm_scache.icache_line_size != 0 || arm_scache.dcache_line_size != 0) { 687 print_cache_info(dv, &arm_scache, 1); 688 } 689 690 691 switch (cpu_class) { 692 #ifdef CPU_ARM2 693 case CPU_CLASS_ARM2: 694 #endif 695 #ifdef CPU_ARM250 696 case CPU_CLASS_ARM2AS: 697 #endif 698 #ifdef CPU_ARM3 699 case CPU_CLASS_ARM3: 700 #endif 701 #ifdef CPU_ARM6 702 case CPU_CLASS_ARM6: 703 #endif 704 #ifdef CPU_ARM7 705 case CPU_CLASS_ARM7: 706 #endif 707 #ifdef CPU_ARM7TDMI 708 case CPU_CLASS_ARM7TDMI: 709 #endif 710 #ifdef CPU_ARM8 711 case CPU_CLASS_ARM8: 712 #endif 713 #ifdef CPU_ARM9 714 case CPU_CLASS_ARM9TDMI: 715 #endif 716 #if defined(CPU_ARM9E) || defined(CPU_SHEEVA) 717 case CPU_CLASS_ARM9ES: 718 case CPU_CLASS_ARM9EJS: 719 #endif 720 #ifdef CPU_ARM10 721 case CPU_CLASS_ARM10E: 722 case CPU_CLASS_ARM10EJ: 723 #endif 724 #if defined(CPU_SA110) || defined(CPU_SA1100) || \ 725 defined(CPU_SA1110) || defined(CPU_IXP12X0) 726 case CPU_CLASS_SA1: 727 #endif 728 #if defined(CPU_XSCALE_80200) || defined(CPU_XSCALE_80321) || \ 729 defined(__CPU_XSCALE_PXA2XX) || defined(CPU_XSCALE_IXP425) 730 case CPU_CLASS_XSCALE: 731 #endif 732 #if defined(CPU_ARM11) 733 case CPU_CLASS_ARM11J: 734 #endif 735 #if defined(CPU_CORTEX) 736 case CPU_CLASS_CORTEX: 737 #endif 738 #if defined(CPU_PJ4B) 739 case CPU_CLASS_PJ4B: 740 #endif 741 #if defined(CPU_FA526) 742 case CPU_CLASS_ARMV4: 743 #endif 744 break; 745 default: 746 if (cpu_classes[cpu_class].class_option == NULL) { 747 aprint_error_dev(dv, "%s does not fully support this CPU.\n", 748 ostype); 749 } else { 750 aprint_error_dev(dv, "This kernel does not fully support " 751 "this CPU.\n"); 752 aprint_normal_dev(dv, "Recompile with \"options %s\" to " 753 "correct this.\n", cpu_classes[cpu_class].class_option); 754 } 755 break; 756 } 757 } 758 759 extern int cpu_instruction_set_attributes[6]; 760 extern int cpu_memory_model_features[4]; 761 extern int cpu_processor_features[2]; 762 extern int cpu_simd_present; 763 extern int cpu_simdex_present; 764 765 void 766 identify_features(device_t dv) 767 { 768 cpu_instruction_set_attributes[0] = armreg_isar0_read(); 769 cpu_instruction_set_attributes[1] = armreg_isar1_read(); 770 cpu_instruction_set_attributes[2] = armreg_isar2_read(); 771 cpu_instruction_set_attributes[3] = armreg_isar3_read(); 772 cpu_instruction_set_attributes[4] = armreg_isar4_read(); 773 cpu_instruction_set_attributes[5] = armreg_isar5_read(); 774 775 cpu_hwdiv_present = 776 ((cpu_instruction_set_attributes[0] >> 24) & 0x0f) >= 2; 777 cpu_simd_present = 778 ((cpu_instruction_set_attributes[3] >> 4) & 0x0f) >= 3; 779 cpu_simdex_present = cpu_simd_present 780 && ((cpu_instruction_set_attributes[1] >> 12) & 0x0f) >= 2; 781 782 cpu_memory_model_features[0] = armreg_mmfr0_read(); 783 cpu_memory_model_features[1] = armreg_mmfr1_read(); 784 cpu_memory_model_features[2] = armreg_mmfr2_read(); 785 cpu_memory_model_features[3] = armreg_mmfr3_read(); 786 787 if (__SHIFTOUT(cpu_memory_model_features[3], __BITS(23,20))) { 788 /* 789 * Updates to the translation tables do not require a clean 790 * to the point of unification to ensure visibility by 791 * subsequent translation table walks. 792 */ 793 pmap_needs_pte_sync = 0; 794 } 795 796 cpu_processor_features[0] = armreg_pfr0_read(); 797 cpu_processor_features[1] = armreg_pfr1_read(); 798 799 aprint_verbose_dev(dv, 800 "isar: [0]=%#x [1]=%#x [2]=%#x [3]=%#x, [4]=%#x, [5]=%#x\n", 801 cpu_instruction_set_attributes[0], 802 cpu_instruction_set_attributes[1], 803 cpu_instruction_set_attributes[2], 804 cpu_instruction_set_attributes[3], 805 cpu_instruction_set_attributes[4], 806 cpu_instruction_set_attributes[5]); 807 aprint_verbose_dev(dv, 808 "mmfr: [0]=%#x [1]=%#x [2]=%#x [3]=%#x\n", 809 cpu_memory_model_features[0], cpu_memory_model_features[1], 810 cpu_memory_model_features[2], cpu_memory_model_features[3]); 811 aprint_verbose_dev(dv, 812 "pfr: [0]=%#x [1]=%#x\n", 813 cpu_processor_features[0], cpu_processor_features[1]); 814 } 815
Indexes created Thu Sep 25 16:09:42 GMT 2025