cpu.c revision 1.111
1 /* $NetBSD: cpu.c,v 1.111 2015/11/12 10:49:35 jmcneill 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 1.111 2015/11/12 10:49:35 jmcneill 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 extern const char *cpu_arch; 64 65 #ifdef MULTIPROCESSOR 66 volatile u_int arm_cpu_hatched = 0; 67 volatile uint32_t arm_cpu_mbox __cacheline_aligned = 0; 68 uint32_t arm_cpu_marker[2] __cacheline_aligned = { 0, 0 }; 69 u_int arm_cpu_max = 1; 70 #endif 71 72 /* Prototypes */ 73 void identify_arm_cpu(device_t, struct cpu_info *); 74 void identify_cortex_caches(device_t); 75 void identify_features(device_t); 76 77 /* 78 * Identify the master (boot) CPU 79 */ 80 81 void 82 cpu_attach(device_t dv, cpuid_t id) 83 { 84 const char * const xname = device_xname(dv); 85 struct cpu_info *ci; 86 87 if (id == 0) { 88 ci = curcpu(); 89 90 /* Get the CPU ID from coprocessor 15 */ 91 92 ci->ci_arm_cpuid = cpu_id(); 93 ci->ci_arm_cputype = ci->ci_arm_cpuid & CPU_ID_CPU_MASK; 94 ci->ci_arm_cpurev = ci->ci_arm_cpuid & CPU_ID_REVISION_MASK; 95 } else { 96 #ifdef MULTIPROCESSOR 97 KASSERT(cpu_info[id] == NULL); 98 ci = kmem_zalloc(sizeof(*ci), KM_SLEEP); 99 KASSERT(ci != NULL); 100 ci->ci_cpl = IPL_HIGH; 101 ci->ci_cpuid = id; 102 uint32_t mpidr = armreg_mpidr_read(); 103 if (mpidr & MPIDR_MT) { 104 ci->ci_data.cpu_smt_id = mpidr & MPIDR_AFF0; 105 ci->ci_data.cpu_core_id = mpidr & MPIDR_AFF1; 106 ci->ci_data.cpu_package_id = mpidr & MPIDR_AFF2; 107 } else { 108 ci->ci_data.cpu_core_id = mpidr & MPIDR_AFF0; 109 ci->ci_data.cpu_package_id = mpidr & MPIDR_AFF1; 110 } 111 ci->ci_data.cpu_core_id = id; 112 ci->ci_data.cpu_cc_freq = cpu_info_store.ci_data.cpu_cc_freq; 113 ci->ci_arm_cpuid = cpu_info_store.ci_arm_cpuid; 114 ci->ci_arm_cputype = cpu_info_store.ci_arm_cputype; 115 ci->ci_arm_cpurev = cpu_info_store.ci_arm_cpurev; 116 ci->ci_ctrl = cpu_info_store.ci_ctrl; 117 ci->ci_undefsave[2] = cpu_info_store.ci_undefsave[2]; 118 cpu_info[ci->ci_cpuid] = ci; 119 if ((arm_cpu_hatched & (1 << id)) == 0) { 120 ci->ci_dev = dv; 121 dv->dv_private = ci; 122 aprint_naive(": disabled\n"); 123 aprint_normal(": disabled (unresponsive)\n"); 124 return; 125 } 126 #else 127 aprint_naive(": disabled\n"); 128 aprint_normal(": disabled (uniprocessor kernel)\n"); 129 return; 130 #endif 131 } 132 133 ci->ci_dev = dv; 134 dv->dv_private = ci; 135 136 evcnt_attach_dynamic(&ci->ci_arm700bugcount, EVCNT_TYPE_MISC, 137 NULL, xname, "arm700swibug"); 138 139 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_WRTBUF_0], EVCNT_TYPE_TRAP, 140 NULL, xname, "vector abort"); 141 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_WRTBUF_1], EVCNT_TYPE_TRAP, 142 NULL, xname, "terminal abort"); 143 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_BUSERR_0], EVCNT_TYPE_TRAP, 144 NULL, xname, "external linefetch abort (S)"); 145 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_BUSERR_1], EVCNT_TYPE_TRAP, 146 NULL, xname, "external linefetch abort (P)"); 147 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_BUSERR_2], EVCNT_TYPE_TRAP, 148 NULL, xname, "external non-linefetch abort (S)"); 149 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_BUSERR_3], EVCNT_TYPE_TRAP, 150 NULL, xname, "external non-linefetch abort (P)"); 151 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_BUSTRNL1], EVCNT_TYPE_TRAP, 152 NULL, xname, "external translation abort (L1)"); 153 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_BUSTRNL2], EVCNT_TYPE_TRAP, 154 NULL, xname, "external translation abort (L2)"); 155 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_ALIGN_0], EVCNT_TYPE_TRAP, 156 NULL, xname, "alignment abort (0)"); 157 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_ALIGN_1], EVCNT_TYPE_TRAP, 158 NULL, xname, "alignment abort (1)"); 159 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_TRANS_S], EVCNT_TYPE_TRAP, 160 NULL, xname, "translation abort (S)"); 161 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_TRANS_P], EVCNT_TYPE_TRAP, 162 NULL, xname, "translation abort (P)"); 163 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_DOMAIN_S], EVCNT_TYPE_TRAP, 164 NULL, xname, "domain abort (S)"); 165 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_DOMAIN_P], EVCNT_TYPE_TRAP, 166 NULL, xname, "domain abort (P)"); 167 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_PERM_S], EVCNT_TYPE_TRAP, 168 NULL, xname, "permission abort (S)"); 169 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_PERM_P], EVCNT_TYPE_TRAP, 170 NULL, xname, "permission abort (P)"); 171 evcnt_attach_dynamic_nozero(&ci->ci_und_ev, EVCNT_TYPE_TRAP, 172 NULL, xname, "undefined insn traps"); 173 evcnt_attach_dynamic_nozero(&ci->ci_und_cp15_ev, EVCNT_TYPE_TRAP, 174 NULL, xname, "undefined cp15 insn traps"); 175 176 #ifdef MULTIPROCESSOR 177 /* 178 * and we are done if this is a secondary processor. 179 */ 180 if (id != 0) { 181 #if 1 182 aprint_naive("\n"); 183 aprint_normal("\n"); 184 #else 185 aprint_naive(": %s\n", cpu_getmodel()); 186 aprint_normal(": %s\n", cpu_getmodel()); 187 #endif 188 mi_cpu_attach(ci); 189 #ifdef ARM_MMU_EXTENDED 190 pmap_tlb_info_attach(&pmap_tlb0_info, ci); 191 #endif 192 return; 193 } 194 #endif 195 196 identify_arm_cpu(dv, ci); 197 198 #ifdef CPU_STRONGARM 199 if (ci->ci_arm_cputype == CPU_ID_SA110 && 200 ci->ci_arm_cpurev < 3) { 201 aprint_normal_dev(dv, "SA-110 with bugged STM^ instruction\n"); 202 } 203 #endif 204 205 #ifdef CPU_ARM8 206 if ((ci->ci_arm_cpuid & CPU_ID_CPU_MASK) == CPU_ID_ARM810) { 207 int clock = arm8_clock_config(0, 0); 208 char *fclk; 209 aprint_normal_dev(dv, "ARM810 cp15=%02x", clock); 210 aprint_normal(" clock:%s", (clock & 1) ? " dynamic" : ""); 211 aprint_normal("%s", (clock & 2) ? " sync" : ""); 212 switch ((clock >> 2) & 3) { 213 case 0: 214 fclk = "bus clock"; 215 break; 216 case 1: 217 fclk = "ref clock"; 218 break; 219 case 3: 220 fclk = "pll"; 221 break; 222 default: 223 fclk = "illegal"; 224 break; 225 } 226 aprint_normal(" fclk source=%s\n", fclk); 227 } 228 #endif 229 230 vfp_attach(ci); /* XXX SMP */ 231 } 232 233 enum cpu_class { 234 CPU_CLASS_NONE, 235 CPU_CLASS_ARM2, 236 CPU_CLASS_ARM2AS, 237 CPU_CLASS_ARM3, 238 CPU_CLASS_ARM6, 239 CPU_CLASS_ARM7, 240 CPU_CLASS_ARM7TDMI, 241 CPU_CLASS_ARM8, 242 CPU_CLASS_ARM9TDMI, 243 CPU_CLASS_ARM9ES, 244 CPU_CLASS_ARM9EJS, 245 CPU_CLASS_ARM10E, 246 CPU_CLASS_ARM10EJ, 247 CPU_CLASS_SA1, 248 CPU_CLASS_XSCALE, 249 CPU_CLASS_ARM11J, 250 CPU_CLASS_ARMV4, 251 CPU_CLASS_CORTEX, 252 CPU_CLASS_PJ4B, 253 }; 254 255 static const char * const generic_steppings[16] = { 256 "rev 0", "rev 1", "rev 2", "rev 3", 257 "rev 4", "rev 5", "rev 6", "rev 7", 258 "rev 8", "rev 9", "rev 10", "rev 11", 259 "rev 12", "rev 13", "rev 14", "rev 15", 260 }; 261 262 static const char * const pN_steppings[16] = { 263 "*p0", "*p1", "*p2", "*p3", "*p4", "*p5", "*p6", "*p7", 264 "*p8", "*p9", "*p10", "*p11", "*p12", "*p13", "*p14", "*p15", 265 }; 266 267 static const char * const sa110_steppings[16] = { 268 "rev 0", "step J", "step K", "step S", 269 "step T", "rev 5", "rev 6", "rev 7", 270 "rev 8", "rev 9", "rev 10", "rev 11", 271 "rev 12", "rev 13", "rev 14", "rev 15", 272 }; 273 274 static const char * const sa1100_steppings[16] = { 275 "rev 0", "step B", "step C", "rev 3", 276 "rev 4", "rev 5", "rev 6", "rev 7", 277 "step D", "step E", "rev 10" "step G", 278 "rev 12", "rev 13", "rev 14", "rev 15", 279 }; 280 281 static const char * const sa1110_steppings[16] = { 282 "step A-0", "rev 1", "rev 2", "rev 3", 283 "step B-0", "step B-1", "step B-2", "step B-3", 284 "step B-4", "step B-5", "rev 10", "rev 11", 285 "rev 12", "rev 13", "rev 14", "rev 15", 286 }; 287 288 static const char * const ixp12x0_steppings[16] = { 289 "(IXP1200 step A)", "(IXP1200 step B)", 290 "rev 2", "(IXP1200 step C)", 291 "(IXP1200 step D)", "(IXP1240/1250 step A)", 292 "(IXP1240 step B)", "(IXP1250 step B)", 293 "rev 8", "rev 9", "rev 10", "rev 11", 294 "rev 12", "rev 13", "rev 14", "rev 15", 295 }; 296 297 static const char * const xscale_steppings[16] = { 298 "step A-0", "step A-1", "step B-0", "step C-0", 299 "step D-0", "rev 5", "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 static const char * const i80321_steppings[16] = { 305 "step A-0", "step B-0", "rev 2", "rev 3", 306 "rev 4", "rev 5", "rev 6", "rev 7", 307 "rev 8", "rev 9", "rev 10", "rev 11", 308 "rev 12", "rev 13", "rev 14", "rev 15", 309 }; 310 311 static const char * const i80219_steppings[16] = { 312 "step A-0", "rev 1", "rev 2", "rev 3", 313 "rev 4", "rev 5", "rev 6", "rev 7", 314 "rev 8", "rev 9", "rev 10", "rev 11", 315 "rev 12", "rev 13", "rev 14", "rev 15", 316 }; 317 318 /* Steppings for PXA2[15]0 */ 319 static const char * const pxa2x0_steppings[16] = { 320 "step A-0", "step A-1", "step B-0", "step B-1", 321 "step B-2", "step C-0", "rev 6", "rev 7", 322 "rev 8", "rev 9", "rev 10", "rev 11", 323 "rev 12", "rev 13", "rev 14", "rev 15", 324 }; 325 326 /* Steppings for PXA255/26x. 327 * rev 5: PXA26x B0, rev 6: PXA255 A0 328 */ 329 static const char * const pxa255_steppings[16] = { 330 "rev 0", "rev 1", "rev 2", "step A-0", 331 "rev 4", "step B-0", "step A-0", "rev 7", 332 "rev 8", "rev 9", "rev 10", "rev 11", 333 "rev 12", "rev 13", "rev 14", "rev 15", 334 }; 335 336 /* Stepping for PXA27x */ 337 static const char * const pxa27x_steppings[16] = { 338 "step A-0", "step A-1", "step B-0", "step B-1", 339 "step C-0", "rev 5", "rev 6", "rev 7", 340 "rev 8", "rev 9", "rev 10", "rev 11", 341 "rev 12", "rev 13", "rev 14", "rev 15", 342 }; 343 344 static const char * const ixp425_steppings[16] = { 345 "step 0", "rev 1", "rev 2", "rev 3", 346 "rev 4", "rev 5", "rev 6", "rev 7", 347 "rev 8", "rev 9", "rev 10", "rev 11", 348 "rev 12", "rev 13", "rev 14", "rev 15", 349 }; 350 351 struct cpuidtab { 352 uint32_t cpuid; 353 enum cpu_class cpu_class; 354 const char *cpu_classname; 355 const char * const *cpu_steppings; 356 char cpu_arch[8]; 357 }; 358 359 const struct cpuidtab cpuids[] = { 360 { CPU_ID_ARM2, CPU_CLASS_ARM2, "ARM2", 361 generic_steppings, "2" }, 362 { CPU_ID_ARM250, CPU_CLASS_ARM2AS, "ARM250", 363 generic_steppings, "2" }, 364 365 { CPU_ID_ARM3, CPU_CLASS_ARM3, "ARM3", 366 generic_steppings, "2A" }, 367 368 { CPU_ID_ARM600, CPU_CLASS_ARM6, "ARM600", 369 generic_steppings, "3" }, 370 { CPU_ID_ARM610, CPU_CLASS_ARM6, "ARM610", 371 generic_steppings, "3" }, 372 { CPU_ID_ARM620, CPU_CLASS_ARM6, "ARM620", 373 generic_steppings, "3" }, 374 375 { CPU_ID_ARM700, CPU_CLASS_ARM7, "ARM700", 376 generic_steppings, "3" }, 377 { CPU_ID_ARM710, CPU_CLASS_ARM7, "ARM710", 378 generic_steppings, "3" }, 379 { CPU_ID_ARM7500, CPU_CLASS_ARM7, "ARM7500", 380 generic_steppings, "3" }, 381 { CPU_ID_ARM710A, CPU_CLASS_ARM7, "ARM710a", 382 generic_steppings, "3" }, 383 { CPU_ID_ARM7500FE, CPU_CLASS_ARM7, "ARM7500FE", 384 generic_steppings, "3" }, 385 386 { CPU_ID_ARM810, CPU_CLASS_ARM8, "ARM810", 387 generic_steppings, "4" }, 388 389 { CPU_ID_SA110, CPU_CLASS_SA1, "SA-110", 390 sa110_steppings, "4" }, 391 { CPU_ID_SA1100, CPU_CLASS_SA1, "SA-1100", 392 sa1100_steppings, "4" }, 393 { CPU_ID_SA1110, CPU_CLASS_SA1, "SA-1110", 394 sa1110_steppings, "4" }, 395 396 { CPU_ID_FA526, CPU_CLASS_ARMV4, "FA526", 397 generic_steppings, "4" }, 398 399 { CPU_ID_IXP1200, CPU_CLASS_SA1, "IXP1200", 400 ixp12x0_steppings, "4" }, 401 402 { CPU_ID_ARM710T, CPU_CLASS_ARM7TDMI, "ARM710T", 403 generic_steppings, "4T" }, 404 { CPU_ID_ARM720T, CPU_CLASS_ARM7TDMI, "ARM720T", 405 generic_steppings, "4T" }, 406 { CPU_ID_ARM740T8K, CPU_CLASS_ARM7TDMI, "ARM740T (8 KB cache)", 407 generic_steppings, "4T" }, 408 { CPU_ID_ARM740T4K, CPU_CLASS_ARM7TDMI, "ARM740T (4 KB cache)", 409 generic_steppings, "4T" }, 410 { CPU_ID_ARM920T, CPU_CLASS_ARM9TDMI, "ARM920T", 411 generic_steppings, "4T" }, 412 { CPU_ID_ARM922T, CPU_CLASS_ARM9TDMI, "ARM922T", 413 generic_steppings, "4T" }, 414 { CPU_ID_ARM940T, CPU_CLASS_ARM9TDMI, "ARM940T", 415 generic_steppings, "4T" }, 416 { CPU_ID_TI925T, CPU_CLASS_ARM9TDMI, "TI ARM925T", 417 generic_steppings, "4T" }, 418 419 { CPU_ID_ARM946ES, CPU_CLASS_ARM9ES, "ARM946E-S", 420 generic_steppings, "5TE" }, 421 { CPU_ID_ARM966ES, CPU_CLASS_ARM9ES, "ARM966E-S", 422 generic_steppings, "5TE" }, 423 { CPU_ID_ARM966ESR1, CPU_CLASS_ARM9ES, "ARM966E-S", 424 generic_steppings, "5TE" }, 425 { CPU_ID_MV88SV131, CPU_CLASS_ARM9ES, "Sheeva 88SV131", 426 generic_steppings, "5TE" }, 427 { CPU_ID_MV88FR571_VD, CPU_CLASS_ARM9ES, "Sheeva 88FR571-vd", 428 generic_steppings, "5TE" }, 429 430 { CPU_ID_80200, CPU_CLASS_XSCALE, "i80200", 431 xscale_steppings, "5TE" }, 432 433 { CPU_ID_80321_400, CPU_CLASS_XSCALE, "i80321 400MHz", 434 i80321_steppings, "5TE" }, 435 { CPU_ID_80321_600, CPU_CLASS_XSCALE, "i80321 600MHz", 436 i80321_steppings, "5TE" }, 437 { CPU_ID_80321_400_B0, CPU_CLASS_XSCALE, "i80321 400MHz", 438 i80321_steppings, "5TE" }, 439 { CPU_ID_80321_600_B0, CPU_CLASS_XSCALE, "i80321 600MHz", 440 i80321_steppings, "5TE" }, 441 442 { CPU_ID_80219_400, CPU_CLASS_XSCALE, "i80219 400MHz", 443 i80219_steppings, "5TE" }, 444 { CPU_ID_80219_600, CPU_CLASS_XSCALE, "i80219 600MHz", 445 i80219_steppings, "5TE" }, 446 447 { CPU_ID_PXA27X, CPU_CLASS_XSCALE, "PXA27x", 448 pxa27x_steppings, "5TE" }, 449 { CPU_ID_PXA250A, CPU_CLASS_XSCALE, "PXA250", 450 pxa2x0_steppings, "5TE" }, 451 { CPU_ID_PXA210A, CPU_CLASS_XSCALE, "PXA210", 452 pxa2x0_steppings, "5TE" }, 453 { CPU_ID_PXA250B, CPU_CLASS_XSCALE, "PXA250", 454 pxa2x0_steppings, "5TE" }, 455 { CPU_ID_PXA210B, CPU_CLASS_XSCALE, "PXA210", 456 pxa2x0_steppings, "5TE" }, 457 { CPU_ID_PXA250C, CPU_CLASS_XSCALE, "PXA255/26x", 458 pxa255_steppings, "5TE" }, 459 { CPU_ID_PXA210C, CPU_CLASS_XSCALE, "PXA210", 460 pxa2x0_steppings, "5TE" }, 461 462 { CPU_ID_IXP425_533, CPU_CLASS_XSCALE, "IXP425 533MHz", 463 ixp425_steppings, "5TE" }, 464 { CPU_ID_IXP425_400, CPU_CLASS_XSCALE, "IXP425 400MHz", 465 ixp425_steppings, "5TE" }, 466 { CPU_ID_IXP425_266, CPU_CLASS_XSCALE, "IXP425 266MHz", 467 ixp425_steppings, "5TE" }, 468 469 { CPU_ID_ARM1020E, CPU_CLASS_ARM10E, "ARM1020E", 470 generic_steppings, "5TE" }, 471 { CPU_ID_ARM1022ES, CPU_CLASS_ARM10E, "ARM1022E-S", 472 generic_steppings, "5TE" }, 473 474 { CPU_ID_ARM1026EJS, CPU_CLASS_ARM10EJ, "ARM1026EJ-S", 475 generic_steppings, "5TEJ" }, 476 { CPU_ID_ARM926EJS, CPU_CLASS_ARM9EJS, "ARM926EJ-S", 477 generic_steppings, "5TEJ" }, 478 479 { CPU_ID_ARM1136JS, CPU_CLASS_ARM11J, "ARM1136J-S r0", 480 pN_steppings, "6J" }, 481 { CPU_ID_ARM1136JSR1, CPU_CLASS_ARM11J, "ARM1136J-S r1", 482 pN_steppings, "6J" }, 483 #if 0 484 /* The ARM1156T2-S only has a memory protection unit */ 485 { CPU_ID_ARM1156T2S, CPU_CLASS_ARM11J, "ARM1156T2-S r0", 486 pN_steppings, "6T2" }, 487 #endif 488 { CPU_ID_ARM1176JZS, CPU_CLASS_ARM11J, "ARM1176JZ-S r0", 489 pN_steppings, "6ZK" }, 490 491 { CPU_ID_ARM11MPCORE, CPU_CLASS_ARM11J, "ARM11 MPCore", 492 generic_steppings, "6K" }, 493 494 { CPU_ID_CORTEXA5R0, CPU_CLASS_CORTEX, "Cortex-A5 r0", 495 pN_steppings, "7A" }, 496 { CPU_ID_CORTEXA7R0, CPU_CLASS_CORTEX, "Cortex-A7 r0", 497 pN_steppings, "7A" }, 498 { CPU_ID_CORTEXA8R1, CPU_CLASS_CORTEX, "Cortex-A8 r1", 499 pN_steppings, "7A" }, 500 { CPU_ID_CORTEXA8R2, CPU_CLASS_CORTEX, "Cortex-A8 r2", 501 pN_steppings, "7A" }, 502 { CPU_ID_CORTEXA8R3, CPU_CLASS_CORTEX, "Cortex-A8 r3", 503 pN_steppings, "7A" }, 504 { CPU_ID_CORTEXA9R2, CPU_CLASS_CORTEX, "Cortex-A9 r2", 505 pN_steppings, "7A" }, 506 { CPU_ID_CORTEXA9R3, CPU_CLASS_CORTEX, "Cortex-A9 r3", 507 pN_steppings, "7A" }, 508 { CPU_ID_CORTEXA9R4, CPU_CLASS_CORTEX, "Cortex-A9 r4", 509 pN_steppings, "7A" }, 510 { CPU_ID_CORTEXA15R2, CPU_CLASS_CORTEX, "Cortex-A15 r2", 511 pN_steppings, "7A" }, 512 { CPU_ID_CORTEXA15R3, CPU_CLASS_CORTEX, "Cortex-A15 r3", 513 pN_steppings, "7A" }, 514 { CPU_ID_CORTEXA17R1, CPU_CLASS_CORTEX, "Cortex-A17 r1", 515 pN_steppings, "7A" }, 516 517 { CPU_ID_MV88SV581X_V6, CPU_CLASS_PJ4B, "Sheeva 88SV581x", 518 generic_steppings }, 519 { CPU_ID_ARM_88SV581X_V6, CPU_CLASS_PJ4B, "Sheeva 88SV581x", 520 generic_steppings }, 521 { CPU_ID_MV88SV581X_V7, CPU_CLASS_PJ4B, "Sheeva 88SV581x", 522 generic_steppings }, 523 { CPU_ID_ARM_88SV581X_V7, CPU_CLASS_PJ4B, "Sheeva 88SV581x", 524 generic_steppings }, 525 { CPU_ID_MV88SV584X_V6, CPU_CLASS_PJ4B, "Sheeva 88SV584x", 526 generic_steppings }, 527 { CPU_ID_ARM_88SV584X_V6, CPU_CLASS_PJ4B, "Sheeva 88SV584x", 528 generic_steppings }, 529 { CPU_ID_MV88SV584X_V7, CPU_CLASS_PJ4B, "Sheeva 88SV584x", 530 generic_steppings }, 531 532 533 { 0, CPU_CLASS_NONE, NULL, NULL, "" } 534 }; 535 536 struct cpu_classtab { 537 const char *class_name; 538 const char *class_option; 539 }; 540 541 const struct cpu_classtab cpu_classes[] = { 542 [CPU_CLASS_NONE] = { "unknown", NULL }, 543 [CPU_CLASS_ARM2] = { "ARM2", "CPU_ARM2" }, 544 [CPU_CLASS_ARM2AS] = { "ARM2as", "CPU_ARM250" }, 545 [CPU_CLASS_ARM3] = { "ARM3", "CPU_ARM3" }, 546 [CPU_CLASS_ARM6] = { "ARM6", "CPU_ARM6" }, 547 [CPU_CLASS_ARM7] = { "ARM7", "CPU_ARM7" }, 548 [CPU_CLASS_ARM7TDMI] = { "ARM7TDMI", "CPU_ARM7TDMI" }, 549 [CPU_CLASS_ARM8] = { "ARM8", "CPU_ARM8" }, 550 [CPU_CLASS_ARM9TDMI] = { "ARM9TDMI", NULL }, 551 [CPU_CLASS_ARM9ES] = { "ARM9E-S", "CPU_ARM9E" }, 552 [CPU_CLASS_ARM9EJS] = { "ARM9EJ-S", "CPU_ARM9E" }, 553 [CPU_CLASS_ARM10E] = { "ARM10E", "CPU_ARM10" }, 554 [CPU_CLASS_ARM10EJ] = { "ARM10EJ", "CPU_ARM10" }, 555 [CPU_CLASS_SA1] = { "SA-1", "CPU_SA110" }, 556 [CPU_CLASS_XSCALE] = { "XScale", "CPU_XSCALE_..." }, 557 [CPU_CLASS_ARM11J] = { "ARM11J", "CPU_ARM11" }, 558 [CPU_CLASS_ARMV4] = { "ARMv4", "CPU_ARMV4" }, 559 [CPU_CLASS_CORTEX] = { "Cortex", "CPU_CORTEX" }, 560 [CPU_CLASS_PJ4B] = { "Marvell", "CPU_PJ4B" }, 561 }; 562 563 /* 564 * Report the type of the specified arm processor. This uses the generic and 565 * arm specific information in the CPU structure to identify the processor. 566 * The remaining fields in the CPU structure are filled in appropriately. 567 */ 568 569 static const char * const wtnames[] = { 570 "write-through", 571 "write-back", 572 "write-back", 573 "**unknown 3**", 574 "**unknown 4**", 575 "write-back-locking", /* XXX XScale-specific? */ 576 "write-back-locking-A", 577 "write-back-locking-B", 578 "**unknown 8**", 579 "**unknown 9**", 580 "**unknown 10**", 581 "**unknown 11**", 582 "write-back", 583 "write-back-locking-line", 584 "write-back-locking-C", 585 "write-back-locking-D", 586 }; 587 588 static void 589 print_cache_info(device_t dv, struct arm_cache_info *info, u_int level) 590 { 591 if (info->cache_unified) { 592 aprint_normal_dev(dv, "%dKB/%dB %d-way %s L%u %cI%cT Unified cache\n", 593 info->dcache_size / 1024, 594 info->dcache_line_size, info->dcache_ways, 595 wtnames[info->cache_type], level + 1, 596 info->dcache_type & CACHE_TYPE_PIxx ? 'P' : 'V', 597 info->dcache_type & CACHE_TYPE_xxPT ? 'P' : 'V'); 598 } else { 599 aprint_normal_dev(dv, "%dKB/%dB %d-way L%u %cI%cT Instruction cache\n", 600 info->icache_size / 1024, 601 info->icache_line_size, info->icache_ways, level + 1, 602 info->icache_type & CACHE_TYPE_PIxx ? 'P' : 'V', 603 info->icache_type & CACHE_TYPE_xxPT ? 'P' : 'V'); 604 aprint_normal_dev(dv, "%dKB/%dB %d-way %s L%u %cI%cT Data cache\n", 605 info->dcache_size / 1024, 606 info->dcache_line_size, info->dcache_ways, 607 wtnames[info->cache_type], level + 1, 608 info->dcache_type & CACHE_TYPE_PIxx ? 'P' : 'V', 609 info->dcache_type & CACHE_TYPE_xxPT ? 'P' : 'V'); 610 } 611 } 612 613 static enum cpu_class 614 identify_arm_model(uint32_t cpuid, char *buf, size_t len) 615 { 616 enum cpu_class cpu_class = CPU_CLASS_NONE; 617 for (const struct cpuidtab *id = cpuids; id->cpuid != 0; id++) { 618 if (id->cpuid == (cpuid & CPU_ID_CPU_MASK)) { 619 const char *steppingstr = 620 id->cpu_steppings[cpuid & CPU_ID_REVISION_MASK]; 621 cpu_arch = id->cpu_arch; 622 cpu_class = id->cpu_class; 623 snprintf(buf, len, "%s%s%s (%s V%s core)", 624 id->cpu_classname, 625 steppingstr[0] == '*' ? "" : " ", 626 &steppingstr[steppingstr[0] == '*'], 627 cpu_classes[cpu_class].class_name, 628 cpu_arch); 629 return cpu_class; 630 } 631 } 632 633 snprintf(buf, len, "unknown CPU (ID = 0x%x)", cpuid); 634 return cpu_class; 635 } 636 637 void 638 identify_arm_cpu(device_t dv, struct cpu_info *ci) 639 { 640 const uint32_t arm_cpuid = ci->ci_arm_cpuid; 641 const char * const xname = device_xname(dv); 642 char model[128]; 643 644 if (arm_cpuid == 0) { 645 aprint_error("Processor failed probe - no CPU ID\n"); 646 return; 647 } 648 649 const enum cpu_class cpu_class = identify_arm_model(arm_cpuid, 650 model, sizeof(model)); 651 if (ci->ci_cpuid == 0) { 652 cpu_setmodel("%s", model); 653 } 654 655 if (ci->ci_data.cpu_cc_freq != 0) { 656 char freqbuf[10]; 657 humanize_number(freqbuf, sizeof(freqbuf), ci->ci_data.cpu_cc_freq, 658 "Hz", 1000); 659 660 aprint_naive(": %s %s\n", freqbuf, model); 661 aprint_normal(": %s %s\n", freqbuf, model); 662 } else { 663 aprint_naive(": %s\n", model); 664 aprint_normal(": %s\n", model); 665 } 666 667 aprint_normal("%s:", xname); 668 669 switch (cpu_class) { 670 case CPU_CLASS_ARM6: 671 case CPU_CLASS_ARM7: 672 case CPU_CLASS_ARM7TDMI: 673 case CPU_CLASS_ARM8: 674 if ((ci->ci_ctrl & CPU_CONTROL_IDC_ENABLE) == 0) 675 aprint_normal(" IDC disabled"); 676 else 677 aprint_normal(" IDC enabled"); 678 break; 679 case CPU_CLASS_ARM9TDMI: 680 case CPU_CLASS_ARM9ES: 681 case CPU_CLASS_ARM9EJS: 682 case CPU_CLASS_ARM10E: 683 case CPU_CLASS_ARM10EJ: 684 case CPU_CLASS_SA1: 685 case CPU_CLASS_XSCALE: 686 case CPU_CLASS_ARM11J: 687 case CPU_CLASS_ARMV4: 688 case CPU_CLASS_CORTEX: 689 case CPU_CLASS_PJ4B: 690 if ((ci->ci_ctrl & CPU_CONTROL_DC_ENABLE) == 0) 691 aprint_normal(" DC disabled"); 692 else 693 aprint_normal(" DC enabled"); 694 if ((ci->ci_ctrl & CPU_CONTROL_IC_ENABLE) == 0) 695 aprint_normal(" IC disabled"); 696 else 697 aprint_normal(" IC enabled"); 698 break; 699 default: 700 break; 701 } 702 if ((ci->ci_ctrl & CPU_CONTROL_WBUF_ENABLE) == 0) 703 aprint_normal(" WB disabled"); 704 else 705 aprint_normal(" WB enabled"); 706 707 if (ci->ci_ctrl & CPU_CONTROL_LABT_ENABLE) 708 aprint_normal(" LABT"); 709 else 710 aprint_normal(" EABT"); 711 712 if (ci->ci_ctrl & CPU_CONTROL_BPRD_ENABLE) 713 aprint_normal(" branch prediction enabled"); 714 715 aprint_normal("\n"); 716 717 if (CPU_ID_CORTEX_P(arm_cpuid) || CPU_ID_ARM11_P(arm_cpuid) || CPU_ID_MV88SV58XX_P(arm_cpuid)) { 718 identify_features(dv); 719 } 720 721 /* Print cache info. */ 722 if (arm_pcache.icache_line_size != 0 || arm_pcache.dcache_line_size != 0) { 723 print_cache_info(dv, &arm_pcache, 0); 724 } 725 if (arm_scache.icache_line_size != 0 || arm_scache.dcache_line_size != 0) { 726 print_cache_info(dv, &arm_scache, 1); 727 } 728 729 730 switch (cpu_class) { 731 #ifdef CPU_ARM2 732 case CPU_CLASS_ARM2: 733 #endif 734 #ifdef CPU_ARM250 735 case CPU_CLASS_ARM2AS: 736 #endif 737 #ifdef CPU_ARM3 738 case CPU_CLASS_ARM3: 739 #endif 740 #ifdef CPU_ARM6 741 case CPU_CLASS_ARM6: 742 #endif 743 #ifdef CPU_ARM7 744 case CPU_CLASS_ARM7: 745 #endif 746 #ifdef CPU_ARM7TDMI 747 case CPU_CLASS_ARM7TDMI: 748 #endif 749 #ifdef CPU_ARM8 750 case CPU_CLASS_ARM8: 751 #endif 752 #ifdef CPU_ARM9 753 case CPU_CLASS_ARM9TDMI: 754 #endif 755 #if defined(CPU_ARM9E) || defined(CPU_SHEEVA) 756 case CPU_CLASS_ARM9ES: 757 case CPU_CLASS_ARM9EJS: 758 #endif 759 #ifdef CPU_ARM10 760 case CPU_CLASS_ARM10E: 761 case CPU_CLASS_ARM10EJ: 762 #endif 763 #if defined(CPU_SA110) || defined(CPU_SA1100) || \ 764 defined(CPU_SA1110) || defined(CPU_IXP12X0) 765 case CPU_CLASS_SA1: 766 #endif 767 #if defined(CPU_XSCALE_80200) || defined(CPU_XSCALE_80321) || \ 768 defined(__CPU_XSCALE_PXA2XX) || defined(CPU_XSCALE_IXP425) 769 case CPU_CLASS_XSCALE: 770 #endif 771 #if defined(CPU_ARM11) 772 case CPU_CLASS_ARM11J: 773 #endif 774 #if defined(CPU_CORTEX) 775 case CPU_CLASS_CORTEX: 776 #endif 777 #if defined(CPU_PJ4B) 778 case CPU_CLASS_PJ4B: 779 #endif 780 #if defined(CPU_FA526) 781 case CPU_CLASS_ARMV4: 782 #endif 783 break; 784 default: 785 if (cpu_classes[cpu_class].class_option == NULL) { 786 aprint_error_dev(dv, "%s does not fully support this CPU.\n", 787 ostype); 788 } else { 789 aprint_error_dev(dv, "This kernel does not fully support " 790 "this CPU.\n"); 791 aprint_normal_dev(dv, "Recompile with \"options %s\" to " 792 "correct this.\n", cpu_classes[cpu_class].class_option); 793 } 794 break; 795 } 796 } 797 798 extern int cpu_instruction_set_attributes[6]; 799 extern int cpu_memory_model_features[4]; 800 extern int cpu_processor_features[2]; 801 extern int cpu_simd_present; 802 extern int cpu_simdex_present; 803 804 void 805 identify_features(device_t dv) 806 { 807 cpu_instruction_set_attributes[0] = armreg_isar0_read(); 808 cpu_instruction_set_attributes[1] = armreg_isar1_read(); 809 cpu_instruction_set_attributes[2] = armreg_isar2_read(); 810 cpu_instruction_set_attributes[3] = armreg_isar3_read(); 811 cpu_instruction_set_attributes[4] = armreg_isar4_read(); 812 cpu_instruction_set_attributes[5] = armreg_isar5_read(); 813 814 cpu_hwdiv_present = 815 ((cpu_instruction_set_attributes[0] >> 24) & 0x0f) >= 2; 816 cpu_simd_present = 817 ((cpu_instruction_set_attributes[3] >> 4) & 0x0f) >= 3; 818 cpu_simdex_present = cpu_simd_present 819 && ((cpu_instruction_set_attributes[1] >> 12) & 0x0f) >= 2; 820 cpu_synchprim_present = 821 ((cpu_instruction_set_attributes[3] >> 8) & 0xf0) 822 | ((cpu_instruction_set_attributes[4] >> 20) & 0x0f); 823 824 cpu_memory_model_features[0] = armreg_mmfr0_read(); 825 cpu_memory_model_features[1] = armreg_mmfr1_read(); 826 cpu_memory_model_features[2] = armreg_mmfr2_read(); 827 cpu_memory_model_features[3] = armreg_mmfr3_read(); 828 829 #if 0 830 if (__SHIFTOUT(cpu_memory_model_features[3], __BITS(23,20))) { 831 /* 832 * Updates to the translation tables do not require a clean 833 * to the point of unification to ensure visibility by 834 * subsequent translation table walks. 835 */ 836 pmap_needs_pte_sync = 0; 837 } 838 #endif 839 840 cpu_processor_features[0] = armreg_pfr0_read(); 841 cpu_processor_features[1] = armreg_pfr1_read(); 842 843 aprint_debug_dev(dv, "sctlr: %#x\n", armreg_sctlr_read()); 844 aprint_debug_dev(dv, "actlr: %#x\n", armreg_auxctl_read()); 845 aprint_debug_dev(dv, "revidr: %#x\n", armreg_revidr_read()); 846 #ifdef MULTIPROCESSOR 847 aprint_debug_dev(dv, "mpidr: %#x\n", armreg_mpidr_read()); 848 #endif 849 aprint_debug_dev(dv, 850 "isar: [0]=%#x [1]=%#x [2]=%#x [3]=%#x, [4]=%#x, [5]=%#x\n", 851 cpu_instruction_set_attributes[0], 852 cpu_instruction_set_attributes[1], 853 cpu_instruction_set_attributes[2], 854 cpu_instruction_set_attributes[3], 855 cpu_instruction_set_attributes[4], 856 cpu_instruction_set_attributes[5]); 857 aprint_debug_dev(dv, 858 "mmfr: [0]=%#x [1]=%#x [2]=%#x [3]=%#x\n", 859 cpu_memory_model_features[0], cpu_memory_model_features[1], 860 cpu_memory_model_features[2], cpu_memory_model_features[3]); 861 aprint_debug_dev(dv, 862 "pfr: [0]=%#x [1]=%#x\n", 863 cpu_processor_features[0], cpu_processor_features[1]); 864 } 865
Indexes created Tue Sep 23 02:09:52 GMT 2025