cpu.c revision 1.147
1 /* $NetBSD: cpu.c,v 1.147 2020/07/02 11:49:48 martin 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_cputypes.h" 46 #include "opt_multiprocessor.h" 47 48 #include <sys/cdefs.h> 49 __KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.147 2020/07/02 11:49:48 martin Exp $"); 50 51 #include <sys/param.h> 52 53 #include <sys/conf.h> 54 #include <sys/cpu.h> 55 #include <sys/device.h> 56 #include <sys/kmem.h> 57 #include <sys/proc.h> 58 #include <sys/reboot.h> 59 #include <sys/systm.h> 60 61 #include <uvm/uvm_extern.h> 62 63 #include <arm/locore.h> 64 #include <arm/undefined.h> 65 #include <arm/cpu_topology.h> 66 67 extern const char *cpu_arch; 68 69 #ifdef MULTIPROCESSOR 70 #ifdef MPDEBUG 71 uint32_t arm_cpu_marker[2] __cacheline_aligned = { 0, 0 }; 72 #endif 73 74 #endif 75 76 /* Prototypes */ 77 void identify_arm_cpu(device_t, struct cpu_info *); 78 void identify_cortex_caches(device_t); 79 void identify_features(device_t); 80 81 /* 82 * Identify the master (boot) CPU 83 */ 84 85 void 86 cpu_attach(device_t dv, cpuid_t id) 87 { 88 const char * const xname = device_xname(dv); 89 const int unit = device_unit(dv); 90 struct cpu_info *ci; 91 92 if (unit == 0) { 93 ci = curcpu(); 94 95 /* Read SCTLR from cpu */ 96 ci->ci_ctrl = cpu_control(0, 0); 97 98 /* Get the CPU ID from coprocessor 15 */ 99 100 ci->ci_cpuid = id; 101 ci->ci_arm_cpuid = cpu_idnum(); 102 ci->ci_arm_cputype = ci->ci_arm_cpuid & CPU_ID_CPU_MASK; 103 ci->ci_arm_cpurev = ci->ci_arm_cpuid & CPU_ID_REVISION_MASK; 104 } else { 105 #ifdef MULTIPROCESSOR 106 if ((boothowto & RB_MD1) != 0) { 107 aprint_naive("\n"); 108 aprint_normal(": multiprocessor boot disabled\n"); 109 return; 110 } 111 112 KASSERT(unit < MAXCPUS); 113 ci = &cpu_info_store[unit]; 114 115 KASSERT(cpu_info[unit] == NULL); 116 ci->ci_cpl = IPL_HIGH; 117 ci->ci_cpuid = id; 118 ci->ci_data.cpu_cc_freq = cpu_info_store[0].ci_data.cpu_cc_freq; 119 120 ci->ci_undefsave[2] = cpu_info_store[0].ci_undefsave[2]; 121 122 cpu_info[unit] = ci; 123 if (cpu_hatched_p(unit) == false) { 124 ci->ci_dev = dv; 125 dv->dv_private = ci; 126 aprint_naive(": disabled\n"); 127 aprint_normal(": disabled (unresponsive)\n"); 128 return; 129 } 130 #else 131 aprint_naive(": disabled\n"); 132 aprint_normal(": disabled (uniprocessor kernel)\n"); 133 return; 134 #endif 135 } 136 137 ci->ci_dev = dv; 138 dv->dv_private = ci; 139 140 arm_cpu_do_topology(ci); 141 142 evcnt_attach_dynamic(&ci->ci_arm700bugcount, EVCNT_TYPE_MISC, 143 NULL, xname, "arm700swibug"); 144 145 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_WRTBUF_0], EVCNT_TYPE_TRAP, 146 NULL, xname, "vector abort"); 147 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_WRTBUF_1], EVCNT_TYPE_TRAP, 148 NULL, xname, "terminal abort"); 149 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_BUSERR_0], EVCNT_TYPE_TRAP, 150 NULL, xname, "external linefetch abort (S)"); 151 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_BUSERR_1], EVCNT_TYPE_TRAP, 152 NULL, xname, "external linefetch abort (P)"); 153 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_BUSERR_2], EVCNT_TYPE_TRAP, 154 NULL, xname, "external non-linefetch abort (S)"); 155 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_BUSERR_3], EVCNT_TYPE_TRAP, 156 NULL, xname, "external non-linefetch abort (P)"); 157 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_BUSTRNL1], EVCNT_TYPE_TRAP, 158 NULL, xname, "external translation abort (L1)"); 159 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_BUSTRNL2], EVCNT_TYPE_TRAP, 160 NULL, xname, "external translation abort (L2)"); 161 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_ALIGN_0], EVCNT_TYPE_TRAP, 162 NULL, xname, "alignment abort (0)"); 163 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_ALIGN_1], EVCNT_TYPE_TRAP, 164 NULL, xname, "alignment abort (1)"); 165 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_TRANS_S], EVCNT_TYPE_TRAP, 166 NULL, xname, "translation abort (S)"); 167 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_TRANS_P], EVCNT_TYPE_TRAP, 168 NULL, xname, "translation abort (P)"); 169 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_DOMAIN_S], EVCNT_TYPE_TRAP, 170 NULL, xname, "domain abort (S)"); 171 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_DOMAIN_P], EVCNT_TYPE_TRAP, 172 NULL, xname, "domain abort (P)"); 173 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_PERM_S], EVCNT_TYPE_TRAP, 174 NULL, xname, "permission abort (S)"); 175 evcnt_attach_dynamic_nozero(&ci->ci_abt_evs[FAULT_PERM_P], EVCNT_TYPE_TRAP, 176 NULL, xname, "permission abort (P)"); 177 evcnt_attach_dynamic_nozero(&ci->ci_und_ev, EVCNT_TYPE_TRAP, 178 NULL, xname, "undefined insn traps"); 179 evcnt_attach_dynamic_nozero(&ci->ci_und_cp15_ev, EVCNT_TYPE_TRAP, 180 NULL, xname, "undefined cp15 insn traps"); 181 182 ci->ci_kfpu_spl = -1; 183 184 #ifdef MULTIPROCESSOR 185 /* 186 * and we are done if this is a secondary processor. 187 */ 188 if (unit != 0) { 189 aprint_naive("\n"); 190 aprint_normal("\n"); 191 mi_cpu_attach(ci); 192 #ifdef ARM_MMU_EXTENDED 193 pmap_tlb_info_attach(&pmap_tlb0_info, ci); 194 #endif 195 return; 196 } 197 #endif 198 199 identify_arm_cpu(dv, ci); 200 201 #ifdef CPU_STRONGARM 202 if (ci->ci_arm_cputype == CPU_ID_SA110 && 203 ci->ci_arm_cpurev < 3) { 204 aprint_normal_dev(dv, "SA-110 with bugged STM^ instruction\n"); 205 } 206 #endif 207 208 #ifdef CPU_ARM8 209 if ((ci->ci_arm_cpuid & CPU_ID_CPU_MASK) == CPU_ID_ARM810) { 210 int clock = arm8_clock_config(0, 0); 211 char *fclk; 212 aprint_normal_dev(dv, "ARM810 cp15=%02x", clock); 213 aprint_normal(" clock:%s", (clock & 1) ? " dynamic" : ""); 214 aprint_normal("%s", (clock & 2) ? " sync" : ""); 215 switch ((clock >> 2) & 3) { 216 case 0: 217 fclk = "bus clock"; 218 break; 219 case 1: 220 fclk = "ref clock"; 221 break; 222 case 3: 223 fclk = "pll"; 224 break; 225 default: 226 fclk = "illegal"; 227 break; 228 } 229 aprint_normal(" fclk source=%s\n", fclk); 230 } 231 #endif 232 233 vfp_attach(ci); /* XXX SMP */ 234 } 235 236 enum cpu_class { 237 CPU_CLASS_NONE, 238 CPU_CLASS_ARM2, 239 CPU_CLASS_ARM2AS, 240 CPU_CLASS_ARM3, 241 CPU_CLASS_ARM6, 242 CPU_CLASS_ARM7, 243 CPU_CLASS_ARM7TDMI, 244 CPU_CLASS_ARM8, 245 CPU_CLASS_ARM9TDMI, 246 CPU_CLASS_ARM9ES, 247 CPU_CLASS_ARM9EJS, 248 CPU_CLASS_ARM10E, 249 CPU_CLASS_ARM10EJ, 250 CPU_CLASS_SA1, 251 CPU_CLASS_XSCALE, 252 CPU_CLASS_ARM11J, 253 CPU_CLASS_ARMV4, 254 CPU_CLASS_CORTEX, 255 CPU_CLASS_PJ4B, 256 }; 257 258 static const char * const generic_steppings[16] = { 259 "rev 0", "rev 1", "rev 2", "rev 3", 260 "rev 4", "rev 5", "rev 6", "rev 7", 261 "rev 8", "rev 9", "rev 10", "rev 11", 262 "rev 12", "rev 13", "rev 14", "rev 15", 263 }; 264 265 static const char * const pN_steppings[16] = { 266 "*p0", "*p1", "*p2", "*p3", "*p4", "*p5", "*p6", "*p7", 267 "*p8", "*p9", "*p10", "*p11", "*p12", "*p13", "*p14", "*p15", 268 }; 269 270 static const char * const sa110_steppings[16] = { 271 "rev 0", "step J", "step K", "step S", 272 "step T", "rev 5", "rev 6", "rev 7", 273 "rev 8", "rev 9", "rev 10", "rev 11", 274 "rev 12", "rev 13", "rev 14", "rev 15", 275 }; 276 277 static const char * const sa1100_steppings[16] = { 278 "rev 0", "step B", "step C", "rev 3", 279 "rev 4", "rev 5", "rev 6", "rev 7", 280 "step D", "step E", "rev 10" "step G", 281 "rev 12", "rev 13", "rev 14", "rev 15", 282 }; 283 284 static const char * const sa1110_steppings[16] = { 285 "step A-0", "rev 1", "rev 2", "rev 3", 286 "step B-0", "step B-1", "step B-2", "step B-3", 287 "step B-4", "step B-5", "rev 10", "rev 11", 288 "rev 12", "rev 13", "rev 14", "rev 15", 289 }; 290 291 static const char * const ixp12x0_steppings[16] = { 292 "(IXP1200 step A)", "(IXP1200 step B)", 293 "rev 2", "(IXP1200 step C)", 294 "(IXP1200 step D)", "(IXP1240/1250 step A)", 295 "(IXP1240 step B)", "(IXP1250 step B)", 296 "rev 8", "rev 9", "rev 10", "rev 11", 297 "rev 12", "rev 13", "rev 14", "rev 15", 298 }; 299 300 static const char * const xscale_steppings[16] = { 301 "step A-0", "step A-1", "step B-0", "step C-0", 302 "step D-0", "rev 5", "rev 6", "rev 7", 303 "rev 8", "rev 9", "rev 10", "rev 11", 304 "rev 12", "rev 13", "rev 14", "rev 15", 305 }; 306 307 static const char * const i80321_steppings[16] = { 308 "step A-0", "step B-0", "rev 2", "rev 3", 309 "rev 4", "rev 5", "rev 6", "rev 7", 310 "rev 8", "rev 9", "rev 10", "rev 11", 311 "rev 12", "rev 13", "rev 14", "rev 15", 312 }; 313 314 static const char * const i80219_steppings[16] = { 315 "step A-0", "rev 1", "rev 2", "rev 3", 316 "rev 4", "rev 5", "rev 6", "rev 7", 317 "rev 8", "rev 9", "rev 10", "rev 11", 318 "rev 12", "rev 13", "rev 14", "rev 15", 319 }; 320 321 /* Steppings for PXA2[15]0 */ 322 static const char * const pxa2x0_steppings[16] = { 323 "step A-0", "step A-1", "step B-0", "step B-1", 324 "step B-2", "step C-0", "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 /* Steppings for PXA255/26x. 330 * rev 5: PXA26x B0, rev 6: PXA255 A0 331 */ 332 static const char * const pxa255_steppings[16] = { 333 "rev 0", "rev 1", "rev 2", "step A-0", 334 "rev 4", "step B-0", "step A-0", "rev 7", 335 "rev 8", "rev 9", "rev 10", "rev 11", 336 "rev 12", "rev 13", "rev 14", "rev 15", 337 }; 338 339 /* Stepping for PXA27x */ 340 static const char * const pxa27x_steppings[16] = { 341 "step A-0", "step A-1", "step B-0", "step B-1", 342 "step C-0", "rev 5", "rev 6", "rev 7", 343 "rev 8", "rev 9", "rev 10", "rev 11", 344 "rev 12", "rev 13", "rev 14", "rev 15", 345 }; 346 347 static const char * const ixp425_steppings[16] = { 348 "step 0", "rev 1", "rev 2", "rev 3", 349 "rev 4", "rev 5", "rev 6", "rev 7", 350 "rev 8", "rev 9", "rev 10", "rev 11", 351 "rev 12", "rev 13", "rev 14", "rev 15", 352 }; 353 354 struct cpuidtab { 355 uint32_t cpuid; 356 enum cpu_class cpu_class; 357 const char *cpu_classname; 358 const char * const *cpu_steppings; 359 char cpu_arch[8]; 360 }; 361 362 const struct cpuidtab cpuids[] = { 363 { CPU_ID_ARM2, CPU_CLASS_ARM2, "ARM2", 364 generic_steppings, "2" }, 365 { CPU_ID_ARM250, CPU_CLASS_ARM2AS, "ARM250", 366 generic_steppings, "2" }, 367 368 { CPU_ID_ARM3, CPU_CLASS_ARM3, "ARM3", 369 generic_steppings, "2A" }, 370 371 { CPU_ID_ARM600, CPU_CLASS_ARM6, "ARM600", 372 generic_steppings, "3" }, 373 { CPU_ID_ARM610, CPU_CLASS_ARM6, "ARM610", 374 generic_steppings, "3" }, 375 { CPU_ID_ARM620, CPU_CLASS_ARM6, "ARM620", 376 generic_steppings, "3" }, 377 378 { CPU_ID_ARM700, CPU_CLASS_ARM7, "ARM700", 379 generic_steppings, "3" }, 380 { CPU_ID_ARM710, CPU_CLASS_ARM7, "ARM710", 381 generic_steppings, "3" }, 382 { CPU_ID_ARM7500, CPU_CLASS_ARM7, "ARM7500", 383 generic_steppings, "3" }, 384 { CPU_ID_ARM710A, CPU_CLASS_ARM7, "ARM710a", 385 generic_steppings, "3" }, 386 { CPU_ID_ARM7500FE, CPU_CLASS_ARM7, "ARM7500FE", 387 generic_steppings, "3" }, 388 389 { CPU_ID_ARM810, CPU_CLASS_ARM8, "ARM810", 390 generic_steppings, "4" }, 391 392 { CPU_ID_SA110, CPU_CLASS_SA1, "SA-110", 393 sa110_steppings, "4" }, 394 { CPU_ID_SA1100, CPU_CLASS_SA1, "SA-1100", 395 sa1100_steppings, "4" }, 396 { CPU_ID_SA1110, CPU_CLASS_SA1, "SA-1110", 397 sa1110_steppings, "4" }, 398 399 { CPU_ID_FA526, CPU_CLASS_ARMV4, "FA526", 400 generic_steppings, "4" }, 401 402 { CPU_ID_IXP1200, CPU_CLASS_SA1, "IXP1200", 403 ixp12x0_steppings, "4" }, 404 405 { CPU_ID_ARM710T, CPU_CLASS_ARM7TDMI, "ARM710T", 406 generic_steppings, "4T" }, 407 { CPU_ID_ARM720T, CPU_CLASS_ARM7TDMI, "ARM720T", 408 generic_steppings, "4T" }, 409 { CPU_ID_ARM740T8K, CPU_CLASS_ARM7TDMI, "ARM740T (8 KB cache)", 410 generic_steppings, "4T" }, 411 { CPU_ID_ARM740T4K, CPU_CLASS_ARM7TDMI, "ARM740T (4 KB cache)", 412 generic_steppings, "4T" }, 413 { CPU_ID_ARM920T, CPU_CLASS_ARM9TDMI, "ARM920T", 414 generic_steppings, "4T" }, 415 { CPU_ID_ARM922T, CPU_CLASS_ARM9TDMI, "ARM922T", 416 generic_steppings, "4T" }, 417 { CPU_ID_ARM940T, CPU_CLASS_ARM9TDMI, "ARM940T", 418 generic_steppings, "4T" }, 419 { CPU_ID_TI925T, CPU_CLASS_ARM9TDMI, "TI ARM925T", 420 generic_steppings, "4T" }, 421 422 { CPU_ID_ARM946ES, CPU_CLASS_ARM9ES, "ARM946E-S", 423 generic_steppings, "5TE" }, 424 { CPU_ID_ARM966ES, CPU_CLASS_ARM9ES, "ARM966E-S", 425 generic_steppings, "5TE" }, 426 { CPU_ID_ARM966ESR1, CPU_CLASS_ARM9ES, "ARM966E-S", 427 generic_steppings, "5TE" }, 428 { CPU_ID_MV88SV131, CPU_CLASS_ARM9ES, "Sheeva 88SV131", 429 generic_steppings, "5TE" }, 430 { CPU_ID_MV88FR571_VD, CPU_CLASS_ARM9ES, "Sheeva 88FR571-vd", 431 generic_steppings, "5TE" }, 432 433 { CPU_ID_80200, CPU_CLASS_XSCALE, "i80200", 434 xscale_steppings, "5TE" }, 435 436 { CPU_ID_80321_400, CPU_CLASS_XSCALE, "i80321 400MHz", 437 i80321_steppings, "5TE" }, 438 { CPU_ID_80321_600, CPU_CLASS_XSCALE, "i80321 600MHz", 439 i80321_steppings, "5TE" }, 440 { CPU_ID_80321_400_B0, CPU_CLASS_XSCALE, "i80321 400MHz", 441 i80321_steppings, "5TE" }, 442 { CPU_ID_80321_600_B0, CPU_CLASS_XSCALE, "i80321 600MHz", 443 i80321_steppings, "5TE" }, 444 445 { CPU_ID_80219_400, CPU_CLASS_XSCALE, "i80219 400MHz", 446 i80219_steppings, "5TE" }, 447 { CPU_ID_80219_600, CPU_CLASS_XSCALE, "i80219 600MHz", 448 i80219_steppings, "5TE" }, 449 450 { CPU_ID_PXA27X, CPU_CLASS_XSCALE, "PXA27x", 451 pxa27x_steppings, "5TE" }, 452 { CPU_ID_PXA250A, CPU_CLASS_XSCALE, "PXA250", 453 pxa2x0_steppings, "5TE" }, 454 { CPU_ID_PXA210A, CPU_CLASS_XSCALE, "PXA210", 455 pxa2x0_steppings, "5TE" }, 456 { CPU_ID_PXA250B, CPU_CLASS_XSCALE, "PXA250", 457 pxa2x0_steppings, "5TE" }, 458 { CPU_ID_PXA210B, CPU_CLASS_XSCALE, "PXA210", 459 pxa2x0_steppings, "5TE" }, 460 { CPU_ID_PXA250C, CPU_CLASS_XSCALE, "PXA255/26x", 461 pxa255_steppings, "5TE" }, 462 { CPU_ID_PXA210C, CPU_CLASS_XSCALE, "PXA210", 463 pxa2x0_steppings, "5TE" }, 464 465 { CPU_ID_IXP425_533, CPU_CLASS_XSCALE, "IXP425 533MHz", 466 ixp425_steppings, "5TE" }, 467 { CPU_ID_IXP425_400, CPU_CLASS_XSCALE, "IXP425 400MHz", 468 ixp425_steppings, "5TE" }, 469 { CPU_ID_IXP425_266, CPU_CLASS_XSCALE, "IXP425 266MHz", 470 ixp425_steppings, "5TE" }, 471 472 { CPU_ID_ARM1020E, CPU_CLASS_ARM10E, "ARM1020E", 473 generic_steppings, "5TE" }, 474 { CPU_ID_ARM1022ES, CPU_CLASS_ARM10E, "ARM1022E-S", 475 generic_steppings, "5TE" }, 476 477 { CPU_ID_ARM1026EJS, CPU_CLASS_ARM10EJ, "ARM1026EJ-S", 478 generic_steppings, "5TEJ" }, 479 { CPU_ID_ARM926EJS, CPU_CLASS_ARM9EJS, "ARM926EJ-S", 480 generic_steppings, "5TEJ" }, 481 482 { CPU_ID_ARM1136JS, CPU_CLASS_ARM11J, "ARM1136J-S r0", 483 pN_steppings, "6J" }, 484 { CPU_ID_ARM1136JSR1, CPU_CLASS_ARM11J, "ARM1136J-S r1", 485 pN_steppings, "6J" }, 486 #if 0 487 /* The ARM1156T2-S only has a memory protection unit */ 488 { CPU_ID_ARM1156T2S, CPU_CLASS_ARM11J, "ARM1156T2-S r0", 489 pN_steppings, "6T2" }, 490 #endif 491 { CPU_ID_ARM1176JZS, CPU_CLASS_ARM11J, "ARM1176JZ-S r0", 492 pN_steppings, "6ZK" }, 493 494 { CPU_ID_ARM11MPCORE, CPU_CLASS_ARM11J, "ARM11 MPCore", 495 generic_steppings, "6K" }, 496 497 { CPU_ID_CORTEXA5R0, CPU_CLASS_CORTEX, "Cortex-A5 r0", 498 pN_steppings, "7A" }, 499 { CPU_ID_CORTEXA7R0, CPU_CLASS_CORTEX, "Cortex-A7 r0", 500 pN_steppings, "7A" }, 501 { CPU_ID_CORTEXA8R1, CPU_CLASS_CORTEX, "Cortex-A8 r1", 502 pN_steppings, "7A" }, 503 { CPU_ID_CORTEXA8R2, CPU_CLASS_CORTEX, "Cortex-A8 r2", 504 pN_steppings, "7A" }, 505 { CPU_ID_CORTEXA8R3, CPU_CLASS_CORTEX, "Cortex-A8 r3", 506 pN_steppings, "7A" }, 507 { CPU_ID_CORTEXA9R1, CPU_CLASS_CORTEX, "Cortex-A9 r1", 508 pN_steppings, "7A" }, 509 { CPU_ID_CORTEXA9R2, CPU_CLASS_CORTEX, "Cortex-A9 r2", 510 pN_steppings, "7A" }, 511 { CPU_ID_CORTEXA9R3, CPU_CLASS_CORTEX, "Cortex-A9 r3", 512 pN_steppings, "7A" }, 513 { CPU_ID_CORTEXA9R4, CPU_CLASS_CORTEX, "Cortex-A9 r4", 514 pN_steppings, "7A" }, 515 { CPU_ID_CORTEXA12R0, CPU_CLASS_CORTEX, "Cortex-A17(A12) r0", /* A12 was rebranded A17 */ 516 pN_steppings, "7A" }, 517 { CPU_ID_CORTEXA15R2, CPU_CLASS_CORTEX, "Cortex-A15 r2", 518 pN_steppings, "7A" }, 519 { CPU_ID_CORTEXA15R3, CPU_CLASS_CORTEX, "Cortex-A15 r3", 520 pN_steppings, "7A" }, 521 { CPU_ID_CORTEXA15R4, CPU_CLASS_CORTEX, "Cortex-A15 r4", 522 pN_steppings, "7A" }, 523 { CPU_ID_CORTEXA17R1, CPU_CLASS_CORTEX, "Cortex-A17 r1", 524 pN_steppings, "7A" }, 525 { CPU_ID_CORTEXA35R0, CPU_CLASS_CORTEX, "Cortex-A35 r0", 526 pN_steppings, "8A" }, 527 { CPU_ID_CORTEXA53R0, CPU_CLASS_CORTEX, "Cortex-A53 r0", 528 pN_steppings, "8A" }, 529 { CPU_ID_CORTEXA57R0, CPU_CLASS_CORTEX, "Cortex-A57 r0", 530 pN_steppings, "8A" }, 531 { CPU_ID_CORTEXA57R1, CPU_CLASS_CORTEX, "Cortex-A57 r1", 532 pN_steppings, "8A" }, 533 { CPU_ID_CORTEXA72R0, CPU_CLASS_CORTEX, "Cortex-A72 r0", 534 pN_steppings, "8A" }, 535 536 { CPU_ID_MV88SV581X_V6, CPU_CLASS_PJ4B, "Sheeva 88SV581x", 537 generic_steppings }, 538 { CPU_ID_ARM_88SV581X_V6, CPU_CLASS_PJ4B, "Sheeva 88SV581x", 539 generic_steppings }, 540 { CPU_ID_MV88SV581X_V7, CPU_CLASS_PJ4B, "Sheeva 88SV581x", 541 generic_steppings }, 542 { CPU_ID_ARM_88SV581X_V7, CPU_CLASS_PJ4B, "Sheeva 88SV581x", 543 generic_steppings }, 544 { CPU_ID_MV88SV584X_V6, CPU_CLASS_PJ4B, "Sheeva 88SV584x", 545 generic_steppings }, 546 { CPU_ID_ARM_88SV584X_V6, CPU_CLASS_PJ4B, "Sheeva 88SV584x", 547 generic_steppings }, 548 { CPU_ID_MV88SV584X_V7, CPU_CLASS_PJ4B, "Sheeva 88SV584x", 549 generic_steppings }, 550 551 552 { 0, CPU_CLASS_NONE, NULL, NULL, "" } 553 }; 554 555 struct cpu_classtab { 556 const char *class_name; 557 const char *class_option; 558 }; 559 560 const struct cpu_classtab cpu_classes[] = { 561 [CPU_CLASS_NONE] = { "unknown", NULL }, 562 [CPU_CLASS_ARM2] = { "ARM2", "CPU_ARM2" }, 563 [CPU_CLASS_ARM2AS] = { "ARM2as", "CPU_ARM250" }, 564 [CPU_CLASS_ARM3] = { "ARM3", "CPU_ARM3" }, 565 [CPU_CLASS_ARM6] = { "ARM6", "CPU_ARM6" }, 566 [CPU_CLASS_ARM7] = { "ARM7", "CPU_ARM7" }, 567 [CPU_CLASS_ARM7TDMI] = { "ARM7TDMI", "CPU_ARM7TDMI" }, 568 [CPU_CLASS_ARM8] = { "ARM8", "CPU_ARM8" }, 569 [CPU_CLASS_ARM9TDMI] = { "ARM9TDMI", NULL }, 570 [CPU_CLASS_ARM9ES] = { "ARM9E-S", "CPU_ARM9E" }, 571 [CPU_CLASS_ARM9EJS] = { "ARM9EJ-S", "CPU_ARM9E" }, 572 [CPU_CLASS_ARM10E] = { "ARM10E", "CPU_ARM10" }, 573 [CPU_CLASS_ARM10EJ] = { "ARM10EJ", "CPU_ARM10" }, 574 [CPU_CLASS_SA1] = { "SA-1", "CPU_SA110" }, 575 [CPU_CLASS_XSCALE] = { "XScale", "CPU_XSCALE_..." }, 576 [CPU_CLASS_ARM11J] = { "ARM11J", "CPU_ARM11" }, 577 [CPU_CLASS_ARMV4] = { "ARMv4", "CPU_ARMV4" }, 578 [CPU_CLASS_CORTEX] = { "Cortex", "CPU_CORTEX" }, 579 [CPU_CLASS_PJ4B] = { "Marvell", "CPU_PJ4B" }, 580 }; 581 582 /* 583 * Report the type of the specified arm processor. This uses the generic and 584 * arm specific information in the CPU structure to identify the processor. 585 * The remaining fields in the CPU structure are filled in appropriately. 586 */ 587 588 static const char * const wtnames[] = { 589 "write-through", 590 "write-back", 591 "write-back", 592 "**unknown 3**", 593 "**unknown 4**", 594 "write-back-locking", /* XXX XScale-specific? */ 595 "write-back-locking-A", 596 "write-back-locking-B", 597 "**unknown 8**", 598 "**unknown 9**", 599 "**unknown 10**", 600 "**unknown 11**", 601 "write-back", 602 "write-back-locking-line", 603 "write-back-locking-C", 604 "write-back-locking-D", 605 }; 606 607 static void 608 print_cache_info(device_t dv, struct arm_cache_info *info, u_int level) 609 { 610 if (info->cache_unified) { 611 aprint_normal_dev(dv, "%dKB/%dB %d-way %s L%u %cI%cT Unified cache\n", 612 info->dcache_size / 1024, 613 info->dcache_line_size, info->dcache_ways, 614 wtnames[info->cache_type], level + 1, 615 info->dcache_type & CACHE_TYPE_PIxx ? 'P' : 'V', 616 info->dcache_type & CACHE_TYPE_xxPT ? 'P' : 'V'); 617 } else { 618 aprint_normal_dev(dv, "%dKB/%dB %d-way L%u %cI%cT Instruction cache\n", 619 info->icache_size / 1024, 620 info->icache_line_size, info->icache_ways, level + 1, 621 info->icache_type & CACHE_TYPE_PIxx ? 'P' : 'V', 622 info->icache_type & CACHE_TYPE_xxPT ? 'P' : 'V'); 623 aprint_normal_dev(dv, "%dKB/%dB %d-way %s L%u %cI%cT Data cache\n", 624 info->dcache_size / 1024, 625 info->dcache_line_size, info->dcache_ways, 626 wtnames[info->cache_type], level + 1, 627 info->dcache_type & CACHE_TYPE_PIxx ? 'P' : 'V', 628 info->dcache_type & CACHE_TYPE_xxPT ? 'P' : 'V'); 629 } 630 } 631 632 static enum cpu_class 633 identify_arm_model(uint32_t cpuid, char *buf, size_t len) 634 { 635 enum cpu_class cpu_class = CPU_CLASS_NONE; 636 for (const struct cpuidtab *id = cpuids; id->cpuid != 0; id++) { 637 if (id->cpuid == (cpuid & CPU_ID_CPU_MASK)) { 638 const char *steppingstr = 639 id->cpu_steppings[cpuid & CPU_ID_REVISION_MASK]; 640 cpu_arch = id->cpu_arch; 641 cpu_class = id->cpu_class; 642 snprintf(buf, len, "%s%s%s (%s V%s core)", 643 id->cpu_classname, 644 steppingstr[0] == '*' ? "" : " ", 645 &steppingstr[steppingstr[0] == '*'], 646 cpu_classes[cpu_class].class_name, 647 cpu_arch); 648 return cpu_class; 649 } 650 } 651 652 snprintf(buf, len, "unknown CPU (ID = 0x%x)", cpuid); 653 return cpu_class; 654 } 655 656 void 657 identify_arm_cpu(device_t dv, struct cpu_info *ci) 658 { 659 const uint32_t arm_cpuid = ci->ci_arm_cpuid; 660 const char * const xname = device_xname(dv); 661 char model[128]; 662 const char *m; 663 664 if (arm_cpuid == 0) { 665 aprint_error("Processor failed probe - no CPU ID\n"); 666 return; 667 } 668 669 const enum cpu_class cpu_class = identify_arm_model(arm_cpuid, 670 model, sizeof(model)); 671 if (ci->ci_cpuid == 0) { 672 m = cpu_getmodel(); 673 if (m == NULL || *m == 0) 674 cpu_setmodel("%s", model); 675 } 676 677 if (ci->ci_data.cpu_cc_freq != 0) { 678 char freqbuf[10]; 679 humanize_number(freqbuf, sizeof(freqbuf), ci->ci_data.cpu_cc_freq, 680 "Hz", 1000); 681 682 aprint_naive(": %s %s\n", freqbuf, model); 683 aprint_normal(": %s %s\n", freqbuf, model); 684 } else { 685 aprint_naive(": %s\n", model); 686 aprint_normal(": %s\n", model); 687 } 688 689 aprint_debug_dev(dv, "midr: %#x\n", arm_cpuid); 690 691 aprint_normal("%s:", xname); 692 693 switch (cpu_class) { 694 case CPU_CLASS_ARM6: 695 case CPU_CLASS_ARM7: 696 case CPU_CLASS_ARM7TDMI: 697 case CPU_CLASS_ARM8: 698 if ((ci->ci_ctrl & CPU_CONTROL_IDC_ENABLE) == 0) 699 aprint_normal(" IDC disabled"); 700 else 701 aprint_normal(" IDC enabled"); 702 break; 703 case CPU_CLASS_ARM9TDMI: 704 case CPU_CLASS_ARM9ES: 705 case CPU_CLASS_ARM9EJS: 706 case CPU_CLASS_ARM10E: 707 case CPU_CLASS_ARM10EJ: 708 case CPU_CLASS_SA1: 709 case CPU_CLASS_XSCALE: 710 case CPU_CLASS_ARM11J: 711 case CPU_CLASS_ARMV4: 712 case CPU_CLASS_CORTEX: 713 case CPU_CLASS_PJ4B: 714 if ((ci->ci_ctrl & CPU_CONTROL_DC_ENABLE) == 0) 715 aprint_normal(" DC disabled"); 716 else 717 aprint_normal(" DC enabled"); 718 if ((ci->ci_ctrl & CPU_CONTROL_IC_ENABLE) == 0) 719 aprint_normal(" IC disabled"); 720 else 721 aprint_normal(" IC enabled"); 722 break; 723 default: 724 break; 725 } 726 if ((ci->ci_ctrl & CPU_CONTROL_WBUF_ENABLE) == 0) 727 aprint_normal(" WB disabled"); 728 else 729 aprint_normal(" WB enabled"); 730 731 if (ci->ci_ctrl & CPU_CONTROL_LABT_ENABLE) 732 aprint_normal(" LABT"); 733 else 734 aprint_normal(" EABT"); 735 736 if (ci->ci_ctrl & CPU_CONTROL_BPRD_ENABLE) 737 aprint_normal(" branch prediction enabled"); 738 739 aprint_normal("\n"); 740 741 if (CPU_ID_CORTEX_P(arm_cpuid) || CPU_ID_ARM11_P(arm_cpuid) || CPU_ID_MV88SV58XX_P(arm_cpuid)) { 742 identify_features(dv); 743 } 744 745 /* Print cache info. */ 746 if (arm_pcache.icache_line_size != 0 || arm_pcache.dcache_line_size != 0) { 747 print_cache_info(dv, &arm_pcache, 0); 748 } 749 if (arm_scache.icache_line_size != 0 || arm_scache.dcache_line_size != 0) { 750 print_cache_info(dv, &arm_scache, 1); 751 } 752 753 754 switch (cpu_class) { 755 #ifdef CPU_ARM6 756 case CPU_CLASS_ARM6: 757 #endif 758 #ifdef CPU_ARM7 759 case CPU_CLASS_ARM7: 760 #endif 761 #ifdef CPU_ARM7TDMI 762 case CPU_CLASS_ARM7TDMI: 763 #endif 764 #ifdef CPU_ARM8 765 case CPU_CLASS_ARM8: 766 #endif 767 #ifdef CPU_ARM9 768 case CPU_CLASS_ARM9TDMI: 769 #endif 770 #if defined(CPU_ARM9E) || defined(CPU_SHEEVA) 771 case CPU_CLASS_ARM9ES: 772 case CPU_CLASS_ARM9EJS: 773 #endif 774 #ifdef CPU_ARM10 775 case CPU_CLASS_ARM10E: 776 case CPU_CLASS_ARM10EJ: 777 #endif 778 #if defined(CPU_SA110) || defined(CPU_SA1100) || \ 779 defined(CPU_SA1110) || defined(CPU_IXP12X0) 780 case CPU_CLASS_SA1: 781 #endif 782 #if defined(CPU_XSCALE_80200) || defined(CPU_XSCALE_80321) || \ 783 defined(__CPU_XSCALE_PXA2XX) || defined(CPU_XSCALE_IXP425) 784 case CPU_CLASS_XSCALE: 785 #endif 786 #if defined(CPU_ARM11) 787 case CPU_CLASS_ARM11J: 788 #endif 789 #if defined(CPU_CORTEX) 790 case CPU_CLASS_CORTEX: 791 #endif 792 #if defined(CPU_PJ4B) 793 case CPU_CLASS_PJ4B: 794 #endif 795 #if defined(CPU_FA526) 796 case CPU_CLASS_ARMV4: 797 #endif 798 break; 799 default: 800 if (cpu_classes[cpu_class].class_option == NULL) { 801 aprint_error_dev(dv, "%s does not fully support this CPU.\n", 802 ostype); 803 } else { 804 aprint_error_dev(dv, "This kernel does not fully support " 805 "this CPU.\n"); 806 aprint_normal_dev(dv, "Recompile with \"options %s\" to " 807 "correct this.\n", cpu_classes[cpu_class].class_option); 808 } 809 break; 810 } 811 } 812 813 extern int cpu_instruction_set_attributes[6]; 814 extern int cpu_memory_model_features[4]; 815 extern int cpu_processor_features[2]; 816 extern int cpu_simd_present; 817 extern int cpu_simdex_present; 818 819 void 820 identify_features(device_t dv) 821 { 822 cpu_instruction_set_attributes[0] = armreg_isar0_read(); 823 cpu_instruction_set_attributes[1] = armreg_isar1_read(); 824 cpu_instruction_set_attributes[2] = armreg_isar2_read(); 825 cpu_instruction_set_attributes[3] = armreg_isar3_read(); 826 cpu_instruction_set_attributes[4] = armreg_isar4_read(); 827 cpu_instruction_set_attributes[5] = armreg_isar5_read(); 828 829 cpu_hwdiv_present = 830 ((cpu_instruction_set_attributes[0] >> 24) & 0x0f) >= 2; 831 cpu_simd_present = 832 ((cpu_instruction_set_attributes[3] >> 4) & 0x0f) >= 3; 833 cpu_simdex_present = cpu_simd_present 834 && ((cpu_instruction_set_attributes[1] >> 12) & 0x0f) >= 2; 835 cpu_synchprim_present = 836 ((cpu_instruction_set_attributes[3] >> 8) & 0xf0) 837 | ((cpu_instruction_set_attributes[4] >> 20) & 0x0f); 838 839 cpu_memory_model_features[0] = armreg_mmfr0_read(); 840 cpu_memory_model_features[1] = armreg_mmfr1_read(); 841 cpu_memory_model_features[2] = armreg_mmfr2_read(); 842 cpu_memory_model_features[3] = armreg_mmfr3_read(); 843 844 #if 0 845 if (__SHIFTOUT(cpu_memory_model_features[3], __BITS(23,20))) { 846 /* 847 * Updates to the translation tables do not require a clean 848 * to the point of unification to ensure visibility by 849 * subsequent translation table walks. 850 */ 851 pmap_needs_pte_sync = 0; 852 } 853 #endif 854 855 cpu_processor_features[0] = armreg_pfr0_read(); 856 cpu_processor_features[1] = armreg_pfr1_read(); 857 858 aprint_debug_dev(dv, "sctlr: %#x\n", armreg_sctlr_read()); 859 aprint_debug_dev(dv, "actlr: %#x\n", armreg_auxctl_read()); 860 aprint_debug_dev(dv, "revidr: %#x\n", armreg_revidr_read()); 861 #ifdef MULTIPROCESSOR 862 aprint_debug_dev(dv, "mpidr: %#x\n", armreg_mpidr_read()); 863 #endif 864 aprint_debug_dev(dv, 865 "isar: [0]=%#x [1]=%#x [2]=%#x [3]=%#x, [4]=%#x, [5]=%#x\n", 866 cpu_instruction_set_attributes[0], 867 cpu_instruction_set_attributes[1], 868 cpu_instruction_set_attributes[2], 869 cpu_instruction_set_attributes[3], 870 cpu_instruction_set_attributes[4], 871 cpu_instruction_set_attributes[5]); 872 aprint_debug_dev(dv, 873 "mmfr: [0]=%#x [1]=%#x [2]=%#x [3]=%#x\n", 874 cpu_memory_model_features[0], cpu_memory_model_features[1], 875 cpu_memory_model_features[2], cpu_memory_model_features[3]); 876 aprint_debug_dev(dv, 877 "pfr: [0]=%#x [1]=%#x\n", 878 cpu_processor_features[0], cpu_processor_features[1]); 879 } 880 881 #ifdef _ARM_ARCH_6 882 int 883 cpu_maxproc_hook(int nmaxproc) 884 { 885 886 #ifdef ARM_MMU_EXTENDED 887 return pmap_maxproc_set(nmaxproc); 888 #else 889 return 0; 890 #endif 891 } 892 #endif 893
Indexes created Fri Sep 26 20:09:58 GMT 2025