arm32_machdep.c revision 1.96
1 /* $NetBSD: arm32_machdep.c,v 1.96 2013/08/18 06:28:18 matt Exp $ */ 2 3 /* 4 * Copyright (c) 1994-1998 Mark Brinicombe. 5 * Copyright (c) 1994 Brini. 6 * All rights reserved. 7 * 8 * This code is derived from software written for Brini by Mark Brinicombe 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by Mark Brinicombe 21 * for the NetBSD Project. 22 * 4. The name of the company nor the name of the author may be used to 23 * endorse or promote products derived from this software without specific 24 * prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 28 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 29 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 30 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 31 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 32 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * Machine dependent functions for kernel setup 39 * 40 * Created : 17/09/94 41 * Updated : 18/04/01 updated for new wscons 42 */ 43 44 #include <sys/cdefs.h> 45 __KERNEL_RCSID(0, "$NetBSD: arm32_machdep.c,v 1.96 2013/08/18 06:28:18 matt Exp $"); 46 47 #include "opt_modular.h" 48 #include "opt_md.h" 49 #include "opt_pmap_debug.h" 50 51 #include <sys/param.h> 52 #include <sys/systm.h> 53 #include <sys/reboot.h> 54 #include <sys/proc.h> 55 #include <sys/kauth.h> 56 #include <sys/kernel.h> 57 #include <sys/mbuf.h> 58 #include <sys/mount.h> 59 #include <sys/buf.h> 60 #include <sys/msgbuf.h> 61 #include <sys/device.h> 62 #include <sys/sysctl.h> 63 #include <sys/cpu.h> 64 #include <sys/intr.h> 65 #include <sys/module.h> 66 #include <sys/atomic.h> 67 #include <sys/xcall.h> 68 69 #include <uvm/uvm_extern.h> 70 71 #include <dev/cons.h> 72 #include <dev/mm.h> 73 74 #include <arm/locore.h> 75 76 #include <arm/arm32/katelib.h> 77 #include <arm/arm32/machdep.h> 78 79 #include <machine/bootconfig.h> 80 #include <machine/pcb.h> 81 82 void (*cpu_reset_address)(void); /* Used by locore */ 83 paddr_t cpu_reset_address_paddr; /* Used by locore */ 84 85 struct vm_map *phys_map = NULL; 86 87 #if defined(MEMORY_DISK_HOOKS) && !defined(MEMORY_DISK_ROOT_SIZE) 88 extern size_t md_root_size; /* Memory disc size */ 89 #endif /* MEMORY_DISK_HOOKS && !MEMORY_DISK_ROOT_SIZE */ 90 91 pv_addr_t kernelstack; 92 pv_addr_t abtstack; 93 pv_addr_t fiqstack; 94 pv_addr_t irqstack; 95 pv_addr_t undstack; 96 pv_addr_t idlestack; 97 98 void * msgbufaddr; 99 extern paddr_t msgbufphys; 100 101 int kernel_debug = 0; 102 int cpu_fpu_present; 103 int cpu_neon_present; 104 int cpu_simd_present; 105 int cpu_simdex_present; 106 int cpu_umull_present; 107 const char *cpu_arch = ""; 108 109 int cpu_instruction_set_attributes[6]; 110 int cpu_memory_model_features[4]; 111 int cpu_processor_features[2]; 112 int cpu_media_and_vfp_features[2]; 113 114 /* exported variable to be filled in by the bootloaders */ 115 char *booted_kernel; 116 117 /* Prototypes */ 118 119 void data_abort_handler(trapframe_t *frame); 120 void prefetch_abort_handler(trapframe_t *frame); 121 extern void configure(void); 122 123 /* 124 * arm32_vector_init: 125 * 126 * Initialize the vector page, and select whether or not to 127 * relocate the vectors. 128 * 129 * NOTE: We expect the vector page to be mapped at its expected 130 * destination. 131 */ 132 void 133 arm32_vector_init(vaddr_t va, int which) 134 { 135 #if defined(CPU_ARMV7) || defined(CPU_ARM11) || defined(ARM_HAS_VBAR) 136 /* 137 * If this processor has the security extension, don't bother 138 * to move/map the vector page. Simply point VBAR to the copy 139 * that exists in the .text segment. 140 */ 141 #ifndef ARM_HAS_VBAR 142 if (va == ARM_VECTORS_LOW 143 && (armreg_pfr1_read() & ARM_PFR1_SEC_MASK) != 0) { 144 #endif 145 extern const uint32_t page0rel[]; 146 vector_page = (vaddr_t)page0rel; 147 KASSERT((vector_page & 0x1f) == 0); 148 armreg_vbar_write(vector_page); 149 #ifdef VERBOSE_INIT_ARM 150 printf(" vbar=%p", page0rel); 151 #endif 152 cpu_control(CPU_CONTROL_VECRELOC, 0); 153 return; 154 #ifndef ARM_HAS_VBAR 155 } 156 #endif 157 #endif 158 #ifndef ARM_HAS_VBAR 159 if (CPU_IS_PRIMARY(curcpu())) { 160 extern unsigned int page0[], page0_data[]; 161 unsigned int *vectors = (int *) va; 162 unsigned int *vectors_data = vectors + (page0_data - page0); 163 int vec; 164 165 /* 166 * Loop through the vectors we're taking over, and copy the 167 * vector's insn and data word. 168 */ 169 for (vec = 0; vec < ARM_NVEC; vec++) { 170 if ((which & (1 << vec)) == 0) { 171 /* Don't want to take over this vector. */ 172 continue; 173 } 174 vectors[vec] = page0[vec]; 175 vectors_data[vec] = page0_data[vec]; 176 } 177 178 /* Now sync the vectors. */ 179 cpu_icache_sync_range(va, (ARM_NVEC * 2) * sizeof(u_int)); 180 181 vector_page = va; 182 } 183 184 if (va == ARM_VECTORS_HIGH) { 185 /* 186 * Assume the MD caller knows what it's doing here, and 187 * really does want the vector page relocated. 188 * 189 * Note: This has to be done here (and not just in 190 * cpu_setup()) because the vector page needs to be 191 * accessible *before* cpu_startup() is called. 192 * Think ddb(9) ... 193 * 194 * NOTE: If the CPU control register is not readable, 195 * this will totally fail! We'll just assume that 196 * any system that has high vector support has a 197 * readable CPU control register, for now. If we 198 * ever encounter one that does not, we'll have to 199 * rethink this. 200 */ 201 cpu_control(CPU_CONTROL_VECRELOC, CPU_CONTROL_VECRELOC); 202 } 203 #endif 204 } 205 206 /* 207 * Debug function just to park the CPU 208 */ 209 210 void 211 halt(void) 212 { 213 while (1) 214 cpu_sleep(0); 215 } 216 217 218 /* Sync the discs, unmount the filesystems, and adjust the todr */ 219 220 void 221 bootsync(void) 222 { 223 static bool bootsyncdone = false; 224 225 if (bootsyncdone) return; 226 227 bootsyncdone = true; 228 229 /* Make sure we can still manage to do things */ 230 if (GetCPSR() & I32_bit) { 231 /* 232 * If we get here then boot has been called without RB_NOSYNC 233 * and interrupts were disabled. This means the boot() call 234 * did not come from a user process e.g. shutdown, but must 235 * have come from somewhere in the kernel. 236 */ 237 IRQenable; 238 printf("Warning IRQ's disabled during boot()\n"); 239 } 240 241 vfs_shutdown(); 242 243 resettodr(); 244 } 245 246 /* 247 * void cpu_startup(void) 248 * 249 * Machine dependent startup code. 250 * 251 */ 252 void 253 cpu_startup(void) 254 { 255 vaddr_t minaddr; 256 vaddr_t maxaddr; 257 u_int loop; 258 char pbuf[9]; 259 260 /* 261 * Until we better locking, we have to live under the kernel lock. 262 */ 263 //KERNEL_LOCK(1, NULL); 264 265 /* Set the CPU control register */ 266 cpu_setup(boot_args); 267 268 #ifndef ARM_HAS_VBAR 269 /* Lock down zero page */ 270 vector_page_setprot(VM_PROT_READ); 271 #endif 272 273 /* 274 * Give pmap a chance to set up a few more things now the vm 275 * is initialised 276 */ 277 pmap_postinit(); 278 279 /* 280 * Initialize error message buffer (at end of core). 281 */ 282 283 /* msgbufphys was setup during the secondary boot strap */ 284 for (loop = 0; loop < btoc(MSGBUFSIZE); ++loop) 285 pmap_kenter_pa((vaddr_t)msgbufaddr + loop * PAGE_SIZE, 286 msgbufphys + loop * PAGE_SIZE, 287 VM_PROT_READ|VM_PROT_WRITE, 0); 288 pmap_update(pmap_kernel()); 289 initmsgbuf(msgbufaddr, round_page(MSGBUFSIZE)); 290 291 /* 292 * Identify ourselves for the msgbuf (everything printed earlier will 293 * not be buffered). 294 */ 295 printf("%s%s", copyright, version); 296 297 format_bytes(pbuf, sizeof(pbuf), arm_ptob(physmem)); 298 printf("total memory = %s\n", pbuf); 299 300 minaddr = 0; 301 302 /* 303 * Allocate a submap for physio 304 */ 305 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 306 VM_PHYS_SIZE, 0, false, NULL); 307 308 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 309 printf("avail memory = %s\n", pbuf); 310 311 struct lwp * const l = &lwp0; 312 struct pcb * const pcb = lwp_getpcb(l); 313 pcb->pcb_ksp = uvm_lwp_getuarea(l) + USPACE_SVC_STACK_TOP; 314 lwp_settrapframe(l, (struct trapframe *)pcb->pcb_ksp - 1); 315 } 316 317 /* 318 * machine dependent system variables. 319 */ 320 static int 321 sysctl_machdep_booted_device(SYSCTLFN_ARGS) 322 { 323 struct sysctlnode node; 324 325 if (booted_device == NULL) 326 return (EOPNOTSUPP); 327 328 node = *rnode; 329 node.sysctl_data = __UNCONST(device_xname(booted_device)); 330 node.sysctl_size = strlen(device_xname(booted_device)) + 1; 331 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 332 } 333 334 static int 335 sysctl_machdep_booted_kernel(SYSCTLFN_ARGS) 336 { 337 struct sysctlnode node; 338 339 if (booted_kernel == NULL || booted_kernel[0] == '\0') 340 return (EOPNOTSUPP); 341 342 node = *rnode; 343 node.sysctl_data = booted_kernel; 344 node.sysctl_size = strlen(booted_kernel) + 1; 345 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 346 } 347 348 static int 349 sysctl_machdep_cpu_arch(SYSCTLFN_ARGS) 350 { 351 struct sysctlnode node = *rnode; 352 node.sysctl_data = __UNCONST(cpu_arch); 353 node.sysctl_size = strlen(cpu_arch) + 1; 354 return sysctl_lookup(SYSCTLFN_CALL(&node)); 355 } 356 357 static int 358 sysctl_machdep_powersave(SYSCTLFN_ARGS) 359 { 360 struct sysctlnode node = *rnode; 361 int error, newval; 362 363 newval = cpu_do_powersave; 364 node.sysctl_data = &newval; 365 if (cpufuncs.cf_sleep == (void *) cpufunc_nullop) 366 node.sysctl_flags &= ~CTLFLAG_READWRITE; 367 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 368 if (error || newp == NULL || newval == cpu_do_powersave) 369 return (error); 370 371 if (newval < 0 || newval > 1) 372 return (EINVAL); 373 cpu_do_powersave = newval; 374 375 return (0); 376 } 377 378 SYSCTL_SETUP(sysctl_machdep_setup, "sysctl machdep subtree setup") 379 { 380 381 sysctl_createv(clog, 0, NULL, NULL, 382 CTLFLAG_PERMANENT, 383 CTLTYPE_NODE, "machdep", NULL, 384 NULL, 0, NULL, 0, 385 CTL_MACHDEP, CTL_EOL); 386 387 sysctl_createv(clog, 0, NULL, NULL, 388 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 389 CTLTYPE_INT, "debug", NULL, 390 NULL, 0, &kernel_debug, 0, 391 CTL_MACHDEP, CPU_DEBUG, CTL_EOL); 392 sysctl_createv(clog, 0, NULL, NULL, 393 CTLFLAG_PERMANENT, 394 CTLTYPE_STRING, "booted_device", NULL, 395 sysctl_machdep_booted_device, 0, NULL, 0, 396 CTL_MACHDEP, CPU_BOOTED_DEVICE, CTL_EOL); 397 sysctl_createv(clog, 0, NULL, NULL, 398 CTLFLAG_PERMANENT, 399 CTLTYPE_STRING, "booted_kernel", NULL, 400 sysctl_machdep_booted_kernel, 0, NULL, 0, 401 CTL_MACHDEP, CPU_BOOTED_KERNEL, CTL_EOL); 402 sysctl_createv(clog, 0, NULL, NULL, 403 CTLFLAG_PERMANENT, 404 CTLTYPE_STRUCT, "console_device", NULL, 405 sysctl_consdev, 0, NULL, sizeof(dev_t), 406 CTL_MACHDEP, CPU_CONSDEV, CTL_EOL); 407 sysctl_createv(clog, 0, NULL, NULL, 408 CTLFLAG_PERMANENT, 409 CTLTYPE_STRING, "cpu_arch", NULL, 410 sysctl_machdep_cpu_arch, 0, NULL, 0, 411 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 412 sysctl_createv(clog, 0, NULL, NULL, 413 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 414 CTLTYPE_INT, "powersave", NULL, 415 sysctl_machdep_powersave, 0, &cpu_do_powersave, 0, 416 CTL_MACHDEP, CPU_POWERSAVE, CTL_EOL); 417 sysctl_createv(clog, 0, NULL, NULL, 418 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 419 CTLTYPE_INT, "cpu_id", NULL, 420 NULL, curcpu()->ci_arm_cpuid, NULL, 0, 421 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 422 #ifdef FPU_VFP 423 sysctl_createv(clog, 0, NULL, NULL, 424 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 425 CTLTYPE_INT, "fpu_id", NULL, 426 NULL, 0, &cpu_info_store.ci_vfp_id, 0, 427 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 428 #endif 429 sysctl_createv(clog, 0, NULL, NULL, 430 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 431 CTLTYPE_INT, "fpu_present", NULL, 432 NULL, 0, &cpu_fpu_present, 0, 433 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 434 sysctl_createv(clog, 0, NULL, NULL, 435 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 436 CTLTYPE_INT, "neon_present", NULL, 437 NULL, 0, &cpu_neon_present, 0, 438 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 439 sysctl_createv(clog, 0, NULL, NULL, 440 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 441 CTLTYPE_STRUCT, "id_isar", NULL, 442 NULL, 0, 443 cpu_instruction_set_attributes, 444 sizeof(cpu_instruction_set_attributes), 445 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 446 sysctl_createv(clog, 0, NULL, NULL, 447 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 448 CTLTYPE_STRUCT, "id_mmfr", NULL, 449 NULL, 0, 450 cpu_memory_model_features, 451 sizeof(cpu_memory_model_features), 452 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 453 sysctl_createv(clog, 0, NULL, NULL, 454 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 455 CTLTYPE_STRUCT, "id_pfr", NULL, 456 NULL, 0, 457 cpu_processor_features, 458 sizeof(cpu_processor_features), 459 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 460 sysctl_createv(clog, 0, NULL, NULL, 461 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 462 CTLTYPE_STRUCT, "id_mvfr", NULL, 463 NULL, 0, 464 cpu_media_and_vfp_features, 465 sizeof(cpu_media_and_vfp_features), 466 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 467 sysctl_createv(clog, 0, NULL, NULL, 468 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 469 CTLTYPE_INT, "simd_present", NULL, 470 NULL, 0, &cpu_simd_present, 0, 471 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 472 sysctl_createv(clog, 0, NULL, NULL, 473 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 474 CTLTYPE_INT, "simdex_present", NULL, 475 NULL, 0, &cpu_simdex_present, 0, 476 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 477 } 478 479 void 480 parse_mi_bootargs(char *args) 481 { 482 int integer; 483 484 if (get_bootconf_option(args, "single", BOOTOPT_TYPE_BOOLEAN, &integer) 485 || get_bootconf_option(args, "-s", BOOTOPT_TYPE_BOOLEAN, &integer)) 486 if (integer) 487 boothowto |= RB_SINGLE; 488 if (get_bootconf_option(args, "kdb", BOOTOPT_TYPE_BOOLEAN, &integer) 489 || get_bootconf_option(args, "-k", BOOTOPT_TYPE_BOOLEAN, &integer) 490 || get_bootconf_option(args, "-d", BOOTOPT_TYPE_BOOLEAN, &integer)) 491 if (integer) 492 boothowto |= RB_KDB; 493 if (get_bootconf_option(args, "ask", BOOTOPT_TYPE_BOOLEAN, &integer) 494 || get_bootconf_option(args, "-a", BOOTOPT_TYPE_BOOLEAN, &integer)) 495 if (integer) 496 boothowto |= RB_ASKNAME; 497 498 #ifdef PMAP_DEBUG 499 if (get_bootconf_option(args, "pmapdebug", BOOTOPT_TYPE_INT, &integer)) { 500 pmap_debug_level = integer; 501 pmap_debug(pmap_debug_level); 502 } 503 #endif /* PMAP_DEBUG */ 504 505 /* if (get_bootconf_option(args, "nbuf", BOOTOPT_TYPE_INT, &integer)) 506 bufpages = integer;*/ 507 508 #if defined(MEMORY_DISK_HOOKS) && !defined(MEMORY_DISK_ROOT_SIZE) 509 if (get_bootconf_option(args, "memorydisc", BOOTOPT_TYPE_INT, &integer) 510 || get_bootconf_option(args, "memorydisk", BOOTOPT_TYPE_INT, &integer)) { 511 md_root_size = integer; 512 md_root_size *= 1024; 513 if (md_root_size < 32*1024) 514 md_root_size = 32*1024; 515 if (md_root_size > 2048*1024) 516 md_root_size = 2048*1024; 517 } 518 #endif /* MEMORY_DISK_HOOKS && !MEMORY_DISK_ROOT_SIZE */ 519 520 if (get_bootconf_option(args, "quiet", BOOTOPT_TYPE_BOOLEAN, &integer) 521 || get_bootconf_option(args, "-q", BOOTOPT_TYPE_BOOLEAN, &integer)) 522 if (integer) 523 boothowto |= AB_QUIET; 524 if (get_bootconf_option(args, "verbose", BOOTOPT_TYPE_BOOLEAN, &integer) 525 || get_bootconf_option(args, "-v", BOOTOPT_TYPE_BOOLEAN, &integer)) 526 if (integer) 527 boothowto |= AB_VERBOSE; 528 } 529 530 #ifdef __HAVE_FAST_SOFTINTS 531 #if IPL_SOFTSERIAL != IPL_SOFTNET + 1 532 #error IPLs are screwed up 533 #elif IPL_SOFTNET != IPL_SOFTBIO + 1 534 #error IPLs are screwed up 535 #elif IPL_SOFTBIO != IPL_SOFTCLOCK + 1 536 #error IPLs are screwed up 537 #elif !(IPL_SOFTCLOCK > IPL_NONE) 538 #error IPLs are screwed up 539 #elif (IPL_NONE != 0) 540 #error IPLs are screwed up 541 #endif 542 543 #ifndef __HAVE_PIC_FAST_SOFTINTS 544 #define SOFTINT2IPLMAP \ 545 (((IPL_SOFTSERIAL - IPL_SOFTCLOCK) << (SOFTINT_SERIAL * 4)) | \ 546 ((IPL_SOFTNET - IPL_SOFTCLOCK) << (SOFTINT_NET * 4)) | \ 547 ((IPL_SOFTBIO - IPL_SOFTCLOCK) << (SOFTINT_BIO * 4)) | \ 548 ((IPL_SOFTCLOCK - IPL_SOFTCLOCK) << (SOFTINT_CLOCK * 4))) 549 #define SOFTINT2IPL(l) ((SOFTINT2IPLMAP >> ((l) * 4)) & 0x0f) 550 551 /* 552 * This returns a mask of softint IPLs that be dispatch at <ipl> 553 * SOFTIPLMASK(IPL_NONE) = 0x0000000f 554 * SOFTIPLMASK(IPL_SOFTCLOCK) = 0x0000000e 555 * SOFTIPLMASK(IPL_SOFTBIO) = 0x0000000c 556 * SOFTIPLMASK(IPL_SOFTNET) = 0x00000008 557 * SOFTIPLMASK(IPL_SOFTSERIAL) = 0x00000000 558 */ 559 #define SOFTIPLMASK(ipl) ((0x0f << (ipl)) & 0x0f) 560 561 void softint_switch(lwp_t *, int); 562 563 void 564 softint_trigger(uintptr_t mask) 565 { 566 curcpu()->ci_softints |= mask; 567 } 568 569 void 570 softint_init_md(lwp_t *l, u_int level, uintptr_t *machdep) 571 { 572 lwp_t ** lp = &l->l_cpu->ci_softlwps[level]; 573 KASSERT(*lp == NULL || *lp == l); 574 *lp = l; 575 *machdep = 1 << SOFTINT2IPL(level); 576 KASSERT(level != SOFTINT_CLOCK || *machdep == (1 << (IPL_SOFTCLOCK - IPL_SOFTCLOCK))); 577 KASSERT(level != SOFTINT_BIO || *machdep == (1 << (IPL_SOFTBIO - IPL_SOFTCLOCK))); 578 KASSERT(level != SOFTINT_NET || *machdep == (1 << (IPL_SOFTNET - IPL_SOFTCLOCK))); 579 KASSERT(level != SOFTINT_SERIAL || *machdep == (1 << (IPL_SOFTSERIAL - IPL_SOFTCLOCK))); 580 } 581 582 void 583 dosoftints(void) 584 { 585 struct cpu_info * const ci = curcpu(); 586 const int opl = ci->ci_cpl; 587 const uint32_t softiplmask = SOFTIPLMASK(opl); 588 589 splhigh(); 590 for (;;) { 591 u_int softints = ci->ci_softints & softiplmask; 592 KASSERT((softints != 0) == ((ci->ci_softints >> opl) != 0)); 593 KASSERT(opl == IPL_NONE || (softints & (1 << (opl - IPL_SOFTCLOCK))) == 0); 594 if (softints == 0) { 595 splx(opl); 596 return; 597 } 598 #define DOSOFTINT(n) \ 599 if (ci->ci_softints & (1 << (IPL_SOFT ## n - IPL_SOFTCLOCK))) { \ 600 ci->ci_softints &= \ 601 ~(1 << (IPL_SOFT ## n - IPL_SOFTCLOCK)); \ 602 softint_switch(ci->ci_softlwps[SOFTINT_ ## n], \ 603 IPL_SOFT ## n); \ 604 continue; \ 605 } 606 DOSOFTINT(SERIAL); 607 DOSOFTINT(NET); 608 DOSOFTINT(BIO); 609 DOSOFTINT(CLOCK); 610 panic("dosoftints wtf (softints=%u?, ipl=%d)", softints, opl); 611 } 612 } 613 #endif /* !__HAVE_PIC_FAST_SOFTINTS */ 614 #endif /* __HAVE_FAST_SOFTINTS */ 615 616 #ifdef MODULAR 617 /* 618 * Push any modules loaded by the boot loader. 619 */ 620 void 621 module_init_md(void) 622 { 623 } 624 #endif /* MODULAR */ 625 626 int 627 mm_md_physacc(paddr_t pa, vm_prot_t prot) 628 { 629 630 return (pa < ctob(physmem)) ? 0 : EFAULT; 631 } 632 633 #ifdef __HAVE_CPU_UAREA_ALLOC_IDLELWP 634 vaddr_t 635 cpu_uarea_alloc_idlelwp(struct cpu_info *ci) 636 { 637 const vaddr_t va = idlestack.pv_va + ci->ci_cpuid * USPACE; 638 // printf("%s: %s: va=%lx\n", __func__, ci->ci_data.cpu_name, va); 639 return va; 640 } 641 #endif 642 643 #ifdef MULTIPROCESSOR 644 void 645 cpu_boot_secondary_processors(void) 646 { 647 uint32_t mbox; 648 kcpuset_export_u32(kcpuset_attached, &mbox, sizeof(mbox)); 649 atomic_swap_32(&arm_cpu_mbox, mbox); 650 membar_producer(); 651 #ifdef _ARM_ARCH_7 652 __asm __volatile("sev; sev; sev"); 653 #endif 654 } 655 656 void 657 xc_send_ipi(struct cpu_info *ci) 658 { 659 KASSERT(kpreempt_disabled()); 660 KASSERT(curcpu() != ci); 661 662 663 if (ci) { 664 /* Unicast, remote CPU */ 665 printf("%s: -> %s", __func__, ci->ci_data.cpu_name); 666 intr_ipi_send(ci->ci_kcpuset, IPI_XCALL); 667 } else { 668 printf("%s: -> !%s", __func__, ci->ci_data.cpu_name); 669 /* Broadcast to all but ourselves */ 670 kcpuset_t *kcp; 671 kcpuset_create(&kcp, (ci != NULL)); 672 KASSERT(kcp != NULL); 673 kcpuset_copy(kcp, kcpuset_running); 674 kcpuset_clear(kcp, cpu_index(ci)); 675 intr_ipi_send(kcp, IPI_XCALL); 676 kcpuset_destroy(kcp); 677 } 678 printf("\n"); 679 } 680 #endif /* MULTIPROCESSOR */ 681 682 #ifdef __HAVE_MM_MD_DIRECT_MAPPED_PHYS 683 bool 684 mm_md_direct_mapped_phys(paddr_t pa, vaddr_t *vap) 685 { 686 if (physical_start <= pa && pa < physical_end) { 687 *vap = KERNEL_BASE + (pa - physical_start); 688 return true; 689 } 690 691 return false; 692 } 693 #endif 694
Indexes created Mon Sep 29 21:09:56 GMT 2025