cpu.c revision 1.62.14.2.4.1
1 /* $NetBSD: cpu.c,v 1.62.14.2.4.1 2007/11/10 02:56:25 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 1.62.14.2.4.1 2007/11/10 02:56:25 matt Exp $"); 50 51 #include <sys/systm.h> 52 #include <sys/malloc.h> 53 #include <sys/device.h> 54 #include <sys/proc.h> 55 #include <sys/conf.h> 56 #include <uvm/uvm_extern.h> 57 #include <machine/cpu.h> 58 59 #include <arm/cpuconf.h> 60 #include <arm/undefined.h> 61 62 #ifdef ARMFPE 63 #include <machine/bootconfig.h> /* For boot args */ 64 #include <arm/fpe-arm/armfpe.h> 65 #endif 66 67 char cpu_model[256]; 68 69 /* Prototypes */ 70 void identify_arm_cpu(struct device *dv, struct cpu_info *); 71 72 /* 73 * Identify the master (boot) CPU 74 */ 75 76 void 77 cpu_attach(struct device *dv) 78 { 79 int usearmfpe; 80 81 usearmfpe = 1; /* when compiled in, its enabled by default */ 82 83 curcpu()->ci_dev = dv; 84 85 evcnt_attach_dynamic(&curcpu()->ci_arm700bugcount, EVCNT_TYPE_MISC, 86 NULL, dv->dv_xname, "arm700swibug"); 87 88 /* Get the CPU ID from coprocessor 15 */ 89 90 curcpu()->ci_arm_cpuid = cpu_id(); 91 curcpu()->ci_arm_cputype = curcpu()->ci_arm_cpuid & CPU_ID_CPU_MASK; 92 curcpu()->ci_arm_cpurev = 93 curcpu()->ci_arm_cpuid & CPU_ID_REVISION_MASK; 94 95 identify_arm_cpu(dv, curcpu()); 96 97 if (curcpu()->ci_arm_cputype == CPU_ID_SA110 && 98 curcpu()->ci_arm_cpurev < 3) { 99 aprint_normal("%s: SA-110 with bugged STM^ instruction\n", 100 dv->dv_xname); 101 } 102 103 #ifdef CPU_ARM8 104 if ((curcpu()->ci_arm_cpuid & CPU_ID_CPU_MASK) == CPU_ID_ARM810) { 105 int clock = arm8_clock_config(0, 0); 106 char *fclk; 107 aprint_normal("%s: ARM810 cp15=%02x", dv->dv_xname, clock); 108 aprint_normal(" clock:%s", (clock & 1) ? " dynamic" : ""); 109 aprint_normal("%s", (clock & 2) ? " sync" : ""); 110 switch ((clock >> 2) & 3) { 111 case 0: 112 fclk = "bus clock"; 113 break; 114 case 1: 115 fclk = "ref clock"; 116 break; 117 case 3: 118 fclk = "pll"; 119 break; 120 default: 121 fclk = "illegal"; 122 break; 123 } 124 aprint_normal(" fclk source=%s\n", fclk); 125 } 126 #endif 127 128 #ifdef ARMFPE 129 /* 130 * Ok now we test for an FPA 131 * At this point no floating point emulator has been installed. 132 * This means any FP instruction will cause undefined exception. 133 * We install a temporay coproc 1 handler which will modify 134 * undefined_test if it is called. 135 * We then try to read the FP status register. If undefined_test 136 * has been decremented then the instruction was not handled by 137 * an FPA so we know the FPA is missing. If undefined_test is 138 * still 1 then we know the instruction was handled by an FPA. 139 * We then remove our test handler and look at the 140 * FP status register for identification. 141 */ 142 143 /* 144 * Ok if ARMFPE is defined and the boot options request the 145 * ARM FPE then it will be installed as the FPE. 146 * This is just while I work on integrating the new FPE. 147 * It means the new FPE gets installed if compiled int (ARMFPE 148 * defined) and also gives me a on/off option when I boot in 149 * case the new FPE is causing panics. 150 */ 151 152 153 if (boot_args) 154 get_bootconf_option(boot_args, "armfpe", 155 BOOTOPT_TYPE_BOOLEAN, &usearmfpe); 156 if (usearmfpe) 157 initialise_arm_fpe(); 158 #endif 159 } 160 161 enum cpu_class { 162 CPU_CLASS_NONE, 163 CPU_CLASS_ARM2, 164 CPU_CLASS_ARM2AS, 165 CPU_CLASS_ARM3, 166 CPU_CLASS_ARM6, 167 CPU_CLASS_ARM7, 168 CPU_CLASS_ARM7TDMI, 169 CPU_CLASS_ARM8, 170 CPU_CLASS_ARM9TDMI, 171 CPU_CLASS_ARM9ES, 172 CPU_CLASS_ARM9EJS, 173 CPU_CLASS_ARM10E, 174 CPU_CLASS_ARM10EJ, 175 CPU_CLASS_SA1, 176 CPU_CLASS_XSCALE, 177 CPU_CLASS_ARM11J 178 }; 179 180 static const char * const generic_steppings[16] = { 181 "rev 0", "rev 1", "rev 2", "rev 3", 182 "rev 4", "rev 5", "rev 6", "rev 7", 183 "rev 8", "rev 9", "rev 10", "rev 11", 184 "rev 12", "rev 13", "rev 14", "rev 15", 185 }; 186 187 static const char * const pN_steppings[16] = { 188 "*p0", "*p1", "*p2", "*p3", "*p4", "*p5", "*p6", "*p7", 189 "*p8", "*p9", "*p10", "*p11", "*p12", "*p13", "*p14", "*p15", 190 }; 191 192 static const char * const sa110_steppings[16] = { 193 "rev 0", "step J", "step K", "step S", 194 "step T", "rev 5", "rev 6", "rev 7", 195 "rev 8", "rev 9", "rev 10", "rev 11", 196 "rev 12", "rev 13", "rev 14", "rev 15", 197 }; 198 199 static const char * const sa1100_steppings[16] = { 200 "rev 0", "step B", "step C", "rev 3", 201 "rev 4", "rev 5", "rev 6", "rev 7", 202 "step D", "step E", "rev 10" "step G", 203 "rev 12", "rev 13", "rev 14", "rev 15", 204 }; 205 206 static const char * const sa1110_steppings[16] = { 207 "step A-0", "rev 1", "rev 2", "rev 3", 208 "step B-0", "step B-1", "step B-2", "step B-3", 209 "step B-4", "step B-5", "rev 10", "rev 11", 210 "rev 12", "rev 13", "rev 14", "rev 15", 211 }; 212 213 static const char * const ixp12x0_steppings[16] = { 214 "(IXP1200 step A)", "(IXP1200 step B)", 215 "rev 2", "(IXP1200 step C)", 216 "(IXP1200 step D)", "(IXP1240/1250 step A)", 217 "(IXP1240 step B)", "(IXP1250 step B)", 218 "rev 8", "rev 9", "rev 10", "rev 11", 219 "rev 12", "rev 13", "rev 14", "rev 15", 220 }; 221 222 static const char * const xscale_steppings[16] = { 223 "step A-0", "step A-1", "step B-0", "step C-0", 224 "step D-0", "rev 5", "rev 6", "rev 7", 225 "rev 8", "rev 9", "rev 10", "rev 11", 226 "rev 12", "rev 13", "rev 14", "rev 15", 227 }; 228 229 static const char * const i80321_steppings[16] = { 230 "step A-0", "step B-0", "rev 2", "rev 3", 231 "rev 4", "rev 5", "rev 6", "rev 7", 232 "rev 8", "rev 9", "rev 10", "rev 11", 233 "rev 12", "rev 13", "rev 14", "rev 15", 234 }; 235 236 static const char * const i80219_steppings[16] = { 237 "step A-0", "rev 1", "rev 2", "rev 3", 238 "rev 4", "rev 5", "rev 6", "rev 7", 239 "rev 8", "rev 9", "rev 10", "rev 11", 240 "rev 12", "rev 13", "rev 14", "rev 15", 241 }; 242 243 /* Steppings for PXA2[15]0 */ 244 static const char * const pxa2x0_steppings[16] = { 245 "step A-0", "step A-1", "step B-0", "step B-1", 246 "step B-2", "step C-0", "rev 6", "rev 7", 247 "rev 8", "rev 9", "rev 10", "rev 11", 248 "rev 12", "rev 13", "rev 14", "rev 15", 249 }; 250 251 /* Steppings for PXA255/26x. 252 * rev 5: PXA26x B0, rev 6: PXA255 A0 253 */ 254 static const char * const pxa255_steppings[16] = { 255 "rev 0", "rev 1", "rev 2", "step A-0", 256 "rev 4", "step B-0", "step A-0", "rev 7", 257 "rev 8", "rev 9", "rev 10", "rev 11", 258 "rev 12", "rev 13", "rev 14", "rev 15", 259 }; 260 261 /* Stepping for PXA27x */ 262 static const char * const pxa27x_steppings[16] = { 263 "step A-0", "step A-1", "step B-0", "step B-1", 264 "step C-0", "rev 5", "rev 6", "rev 7", 265 "rev 8", "rev 9", "rev 10", "rev 11", 266 "rev 12", "rev 13", "rev 14", "rev 15", 267 }; 268 269 static const char * const ixp425_steppings[16] = { 270 "step 0", "rev 1", "rev 2", "rev 3", 271 "rev 4", "rev 5", "rev 6", "rev 7", 272 "rev 8", "rev 9", "rev 10", "rev 11", 273 "rev 12", "rev 13", "rev 14", "rev 15", 274 }; 275 276 struct cpuidtab { 277 u_int32_t cpuid; 278 enum cpu_class cpu_class; 279 const char *cpu_name; 280 const char * const *cpu_steppings; 281 }; 282 283 const struct cpuidtab cpuids[] = { 284 { CPU_ID_ARM2, CPU_CLASS_ARM2, "ARM2", 285 generic_steppings }, 286 { CPU_ID_ARM250, CPU_CLASS_ARM2AS, "ARM250", 287 generic_steppings }, 288 289 { CPU_ID_ARM3, CPU_CLASS_ARM3, "ARM3", 290 generic_steppings }, 291 292 { CPU_ID_ARM600, CPU_CLASS_ARM6, "ARM600", 293 generic_steppings }, 294 { CPU_ID_ARM610, CPU_CLASS_ARM6, "ARM610", 295 generic_steppings }, 296 { CPU_ID_ARM620, CPU_CLASS_ARM6, "ARM620", 297 generic_steppings }, 298 299 { CPU_ID_ARM700, CPU_CLASS_ARM7, "ARM700", 300 generic_steppings }, 301 { CPU_ID_ARM710, CPU_CLASS_ARM7, "ARM710", 302 generic_steppings }, 303 { CPU_ID_ARM7500, CPU_CLASS_ARM7, "ARM7500", 304 generic_steppings }, 305 { CPU_ID_ARM710A, CPU_CLASS_ARM7, "ARM710a", 306 generic_steppings }, 307 { CPU_ID_ARM7500FE, CPU_CLASS_ARM7, "ARM7500FE", 308 generic_steppings }, 309 { CPU_ID_ARM710T, CPU_CLASS_ARM7TDMI, "ARM710T", 310 generic_steppings }, 311 { CPU_ID_ARM720T, CPU_CLASS_ARM7TDMI, "ARM720T", 312 generic_steppings }, 313 { CPU_ID_ARM740T8K, CPU_CLASS_ARM7TDMI, "ARM740T (8 KB cache)", 314 generic_steppings }, 315 { CPU_ID_ARM740T4K, CPU_CLASS_ARM7TDMI, "ARM740T (4 KB cache)", 316 generic_steppings }, 317 318 { CPU_ID_ARM810, CPU_CLASS_ARM8, "ARM810", 319 generic_steppings }, 320 321 { CPU_ID_ARM920T, CPU_CLASS_ARM9TDMI, "ARM920T", 322 generic_steppings }, 323 { CPU_ID_ARM922T, CPU_CLASS_ARM9TDMI, "ARM922T", 324 generic_steppings }, 325 { CPU_ID_ARM926EJS, CPU_CLASS_ARM9EJS, "ARM926EJ-S", 326 generic_steppings }, 327 { CPU_ID_ARM940T, CPU_CLASS_ARM9TDMI, "ARM940T", 328 generic_steppings }, 329 { CPU_ID_ARM946ES, CPU_CLASS_ARM9ES, "ARM946E-S", 330 generic_steppings }, 331 { CPU_ID_ARM966ES, CPU_CLASS_ARM9ES, "ARM966E-S", 332 generic_steppings }, 333 { CPU_ID_ARM966ESR1, CPU_CLASS_ARM9ES, "ARM966E-S", 334 generic_steppings }, 335 { CPU_ID_TI925T, CPU_CLASS_ARM9TDMI, "TI ARM925T", 336 generic_steppings }, 337 338 { CPU_ID_ARM1020E, CPU_CLASS_ARM10E, "ARM1020E", 339 generic_steppings }, 340 { CPU_ID_ARM1022ES, CPU_CLASS_ARM10E, "ARM1022E-S", 341 generic_steppings }, 342 { CPU_ID_ARM1026EJS, CPU_CLASS_ARM10EJ, "ARM1026EJ-S", 343 generic_steppings }, 344 345 { CPU_ID_SA110, CPU_CLASS_SA1, "SA-110", 346 sa110_steppings }, 347 { CPU_ID_SA1100, CPU_CLASS_SA1, "SA-1100", 348 sa1100_steppings }, 349 { CPU_ID_SA1110, CPU_CLASS_SA1, "SA-1110", 350 sa1110_steppings }, 351 352 { CPU_ID_IXP1200, CPU_CLASS_SA1, "IXP1200", 353 ixp12x0_steppings }, 354 355 { CPU_ID_80200, CPU_CLASS_XSCALE, "i80200", 356 xscale_steppings }, 357 358 { CPU_ID_80321_400, CPU_CLASS_XSCALE, "i80321 400MHz", 359 i80321_steppings }, 360 { CPU_ID_80321_600, CPU_CLASS_XSCALE, "i80321 600MHz", 361 i80321_steppings }, 362 { CPU_ID_80321_400_B0, CPU_CLASS_XSCALE, "i80321 400MHz", 363 i80321_steppings }, 364 { CPU_ID_80321_600_B0, CPU_CLASS_XSCALE, "i80321 600MHz", 365 i80321_steppings }, 366 367 { CPU_ID_80219_400, CPU_CLASS_XSCALE, "i80219 400MHz", 368 i80219_steppings }, 369 { CPU_ID_80219_600, CPU_CLASS_XSCALE, "i80219 600MHz", 370 i80219_steppings }, 371 372 { CPU_ID_PXA27X, CPU_CLASS_XSCALE, "PXA27x", 373 pxa27x_steppings }, 374 { CPU_ID_PXA250A, CPU_CLASS_XSCALE, "PXA250", 375 pxa2x0_steppings }, 376 { CPU_ID_PXA210A, CPU_CLASS_XSCALE, "PXA210", 377 pxa2x0_steppings }, 378 { CPU_ID_PXA250B, CPU_CLASS_XSCALE, "PXA250", 379 pxa2x0_steppings }, 380 { CPU_ID_PXA210B, CPU_CLASS_XSCALE, "PXA210", 381 pxa2x0_steppings }, 382 { CPU_ID_PXA250C, CPU_CLASS_XSCALE, "PXA255/26x", 383 pxa255_steppings }, 384 { CPU_ID_PXA210C, CPU_CLASS_XSCALE, "PXA210", 385 pxa2x0_steppings }, 386 387 { CPU_ID_IXP425_533, CPU_CLASS_XSCALE, "IXP425 533MHz", 388 ixp425_steppings }, 389 { CPU_ID_IXP425_400, CPU_CLASS_XSCALE, "IXP425 400MHz", 390 ixp425_steppings }, 391 { CPU_ID_IXP425_266, CPU_CLASS_XSCALE, "IXP425 266MHz", 392 ixp425_steppings }, 393 394 { CPU_ID_ARM1136JS, CPU_CLASS_ARM11J, "ARM1136J-S r0", 395 pN_steppings }, 396 { CPU_ID_ARM1136JSR1, CPU_CLASS_ARM11J, "ARM1136J-S r1", 397 pN_steppings }, 398 399 { 0, CPU_CLASS_NONE, NULL, NULL } 400 }; 401 402 struct cpu_classtab { 403 const char *class_name; 404 const char *class_option; 405 }; 406 407 const struct cpu_classtab cpu_classes[] = { 408 { "unknown", NULL }, /* CPU_CLASS_NONE */ 409 { "ARM2", "CPU_ARM2" }, /* CPU_CLASS_ARM2 */ 410 { "ARM2as", "CPU_ARM250" }, /* CPU_CLASS_ARM2AS */ 411 { "ARM3", "CPU_ARM3" }, /* CPU_CLASS_ARM3 */ 412 { "ARM6", "CPU_ARM6" }, /* CPU_CLASS_ARM6 */ 413 { "ARM7", "CPU_ARM7" }, /* CPU_CLASS_ARM7 */ 414 { "ARM7TDMI", "CPU_ARM7TDMI" }, /* CPU_CLASS_ARM7TDMI */ 415 { "ARM8", "CPU_ARM8" }, /* CPU_CLASS_ARM8 */ 416 { "ARM9TDMI", NULL }, /* CPU_CLASS_ARM9TDMI */ 417 { "ARM9E-S", "CPU_ARM9E" }, /* CPU_CLASS_ARM9ES */ 418 { "ARM9EJ-S", "CPU_ARM9E" }, /* CPU_CLASS_ARM9EJS */ 419 { "ARM10E", "CPU_ARM10" }, /* CPU_CLASS_ARM10E */ 420 { "ARM10EJ", "CPU_ARM10" }, /* CPU_CLASS_ARM10EJ */ 421 { "SA-1", "CPU_SA110" }, /* CPU_CLASS_SA1 */ 422 { "XScale", "CPU_XSCALE_..." }, /* CPU_CLASS_XSCALE */ 423 { "ARM11J", "CPU_ARM11" }, /* CPU_CLASS_ARM11J */ 424 }; 425 426 /* 427 * Report the type of the specified arm processor. This uses the generic and 428 * arm specific information in the CPU structure to identify the processor. 429 * The remaining fields in the CPU structure are filled in appropriately. 430 */ 431 432 static const char * const wtnames[] = { 433 "write-through", 434 "write-back", 435 "write-back", 436 "**unknown 3**", 437 "**unknown 4**", 438 "write-back-locking", /* XXX XScale-specific? */ 439 "write-back-locking-A", 440 "write-back-locking-B", 441 "**unknown 8**", 442 "**unknown 9**", 443 "**unknown 10**", 444 "**unknown 11**", 445 "**unknown 12**", 446 "**unknown 13**", 447 "write-back-locking-C", 448 "**unknown 15**", 449 }; 450 451 void 452 identify_arm_cpu(struct device *dv, struct cpu_info *ci) 453 { 454 u_int cpuid; 455 enum cpu_class cpu_class = CPU_CLASS_NONE; 456 int i; 457 const char *steppingstr; 458 459 cpuid = ci->ci_arm_cpuid; 460 461 if (cpuid == 0) { 462 aprint_error("Processor failed probe - no CPU ID\n"); 463 return; 464 } 465 466 for (i = 0; cpuids[i].cpuid != 0; i++) 467 if (cpuids[i].cpuid == (cpuid & CPU_ID_CPU_MASK)) { 468 cpu_class = cpuids[i].cpu_class; 469 steppingstr = cpuids[i].cpu_steppings[cpuid & 470 CPU_ID_REVISION_MASK], 471 sprintf(cpu_model, "%s%s%s (%s core)", 472 cpuids[i].cpu_name, 473 steppingstr[0] == '*' ? "" : " ", 474 &steppingstr[steppingstr[0] == '*'], 475 cpu_classes[cpu_class].class_name); 476 break; 477 } 478 479 if (cpuids[i].cpuid == 0) 480 sprintf(cpu_model, "unknown CPU (ID = 0x%x)", cpuid); 481 482 aprint_naive(": %s\n", cpu_model); 483 aprint_normal(": %s\n", cpu_model); 484 485 aprint_normal("%s:", dv->dv_xname); 486 487 switch (cpu_class) { 488 case CPU_CLASS_ARM6: 489 case CPU_CLASS_ARM7: 490 case CPU_CLASS_ARM7TDMI: 491 case CPU_CLASS_ARM8: 492 if ((ci->ci_ctrl & CPU_CONTROL_IDC_ENABLE) == 0) 493 aprint_normal(" IDC disabled"); 494 else 495 aprint_normal(" IDC enabled"); 496 break; 497 case CPU_CLASS_ARM9TDMI: 498 case CPU_CLASS_ARM9ES: 499 case CPU_CLASS_ARM9EJS: 500 case CPU_CLASS_ARM10E: 501 case CPU_CLASS_ARM10EJ: 502 case CPU_CLASS_SA1: 503 case CPU_CLASS_XSCALE: 504 case CPU_CLASS_ARM11J: 505 if ((ci->ci_ctrl & CPU_CONTROL_DC_ENABLE) == 0) 506 aprint_normal(" DC disabled"); 507 else 508 aprint_normal(" DC enabled"); 509 if ((ci->ci_ctrl & CPU_CONTROL_IC_ENABLE) == 0) 510 aprint_normal(" IC disabled"); 511 else 512 aprint_normal(" IC enabled"); 513 break; 514 default: 515 break; 516 } 517 if ((ci->ci_ctrl & CPU_CONTROL_WBUF_ENABLE) == 0) 518 aprint_normal(" WB disabled"); 519 else 520 aprint_normal(" WB enabled"); 521 522 if (ci->ci_ctrl & CPU_CONTROL_LABT_ENABLE) 523 aprint_normal(" LABT"); 524 else 525 aprint_normal(" EABT"); 526 527 if (ci->ci_ctrl & CPU_CONTROL_BPRD_ENABLE) 528 aprint_normal(" branch prediction enabled"); 529 530 aprint_normal("\n"); 531 532 /* Print cache info. */ 533 if (arm_picache_line_size == 0 && arm_pdcache_line_size == 0) 534 goto skip_pcache; 535 536 if (arm_pcache_unified) { 537 aprint_normal("%s: %dKB/%dB %d-way %s unified cache\n", 538 dv->dv_xname, arm_pdcache_size / 1024, 539 arm_pdcache_line_size, arm_pdcache_ways, 540 wtnames[arm_pcache_type]); 541 } else { 542 aprint_normal("%s: %dKB/%dB %d-way Instruction cache\n", 543 dv->dv_xname, arm_picache_size / 1024, 544 arm_picache_line_size, arm_picache_ways); 545 aprint_normal("%s: %dKB/%dB %d-way %s Data cache\n", 546 dv->dv_xname, arm_pdcache_size / 1024, 547 arm_pdcache_line_size, arm_pdcache_ways, 548 wtnames[arm_pcache_type]); 549 } 550 551 skip_pcache: 552 553 switch (cpu_class) { 554 #ifdef CPU_ARM2 555 case CPU_CLASS_ARM2: 556 #endif 557 #ifdef CPU_ARM250 558 case CPU_CLASS_ARM2AS: 559 #endif 560 #ifdef CPU_ARM3 561 case CPU_CLASS_ARM3: 562 #endif 563 #ifdef CPU_ARM6 564 case CPU_CLASS_ARM6: 565 #endif 566 #ifdef CPU_ARM7 567 case CPU_CLASS_ARM7: 568 #endif 569 #ifdef CPU_ARM7TDMI 570 case CPU_CLASS_ARM7TDMI: 571 #endif 572 #ifdef CPU_ARM8 573 case CPU_CLASS_ARM8: 574 #endif 575 #ifdef CPU_ARM9 576 case CPU_CLASS_ARM9TDMI: 577 #endif 578 #ifdef CPU_ARM9E 579 case CPU_CLASS_ARM9ES: 580 case CPU_CLASS_ARM9EJS: 581 #endif 582 #ifdef CPU_ARM10 583 case CPU_CLASS_ARM10E: 584 case CPU_CLASS_ARM10EJ: 585 #endif 586 #if defined(CPU_SA110) || defined(CPU_SA1100) || \ 587 defined(CPU_SA1110) || defined(CPU_IXP12X0) 588 case CPU_CLASS_SA1: 589 #endif 590 #if defined(CPU_XSCALE_80200) || defined(CPU_XSCALE_80321) || \ 591 defined(__CPU_XSCALE_PXA2XX) || defined(CPU_XSCALE_IXP425) 592 case CPU_CLASS_XSCALE: 593 #endif 594 #ifdef CPU_ARM11 595 case CPU_CLASS_ARM11J: 596 #endif 597 #ifdef CPU_ARM1136 598 case CPU_CLASS_ARM11J: 599 #endif 600 break; 601 default: 602 if (cpu_classes[cpu_class].class_option == NULL) 603 aprint_error("%s: %s does not fully support this CPU." 604 "\n", dv->dv_xname, ostype); 605 else { 606 aprint_error("%s: This kernel does not fully support " 607 "this CPU.\n", dv->dv_xname); 608 aprint_normal("%s: Recompile with \"options %s\" to " 609 "correct this.\n", dv->dv_xname, 610 cpu_classes[cpu_class].class_option); 611 } 612 break; 613 } 614 615 } 616 #ifdef MULTIPROCESSOR 617 int 618 cpu_alloc_idlepcb(struct cpu_info *ci) 619 { 620 vaddr_t uaddr; 621 struct pcb *pcb; 622 struct trapframe *tf; 623 624 /* 625 * Generate a kernel stack and PCB (in essence, a u-area) for the 626 * new CPU. 627 */ 628 uaddr = uvm_km_alloc(kernel_map, USPACE, 0, UVM_KMF_WIRED); 629 if (!uaddr) 630 return ENOMEM; 631 ci->ci_idlepcb = pcb = (struct pcb *)uaddr; 632 633 /* 634 * This code is largely derived from cpu_fork(), with which it 635 * should perhaps be shared. 636 */ 637 638 /* Copy the pcb */ 639 *pcb = proc0.p_addr->u_pcb; 640 641 /* Set up the undefined stack for the process. */ 642 pcb->pcb_un.un_32.pcb32_und_sp = uaddr + USPACE_UNDEF_STACK_TOP; 643 pcb->pcb_un.un_32.pcb32_sp = uaddr + USPACE_SVC_STACK_TOP; 644 645 #ifdef STACKCHECKS 646 /* Fill the undefined stack with a known pattern */ 647 memset(((u_char *)uaddr) + USPACE_UNDEF_STACK_BOTTOM, 0xdd, 648 (USPACE_UNDEF_STACK_TOP - USPACE_UNDEF_STACK_BOTTOM)); 649 /* Fill the kernel stack with a known pattern */ 650 memset(((u_char *)uaddr) + USPACE_SVC_STACK_BOTTOM, 0xdd, 651 (USPACE_SVC_STACK_TOP - USPACE_SVC_STACK_BOTTOM)); 652 #endif /* STACKCHECKS */ 653 654 pcb->pcb_tf = tf = 655 (struct trapframe *)pcb->pcb_un.un_32.pcb32_sp - 1; 656 *tf = *proc0.p_addr->u_pcb.pcb_tf; 657 return 0; 658 } 659 #endif /* MULTIPROCESSOR */ 660 661 /* End of cpu.c */ 662
Indexes created Tue Oct 21 06:10:07 GMT 2025