arm32_machdep.c revision 1.104
1 /* $NetBSD: arm32_machdep.c,v 1.104 2014/04/11 04:19:47 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 1.104 2014/04/11 04:19:47 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_printfataltraps = 0; 103 int cpu_fpu_present; 104 int cpu_hwdiv_present; 105 int cpu_neon_present; 106 int cpu_simd_present; 107 int cpu_simdex_present; 108 int cpu_umull_present; 109 int cpu_synchprim_present; 110 const char *cpu_arch = ""; 111 112 int cpu_instruction_set_attributes[6]; 113 int cpu_memory_model_features[4]; 114 int cpu_processor_features[2]; 115 int cpu_media_and_vfp_features[2]; 116 117 /* exported variable to be filled in by the bootloaders */ 118 char *booted_kernel; 119 120 /* Prototypes */ 121 122 void data_abort_handler(trapframe_t *frame); 123 void prefetch_abort_handler(trapframe_t *frame); 124 extern void configure(void); 125 126 /* 127 * arm32_vector_init: 128 * 129 * Initialize the vector page, and select whether or not to 130 * relocate the vectors. 131 * 132 * NOTE: We expect the vector page to be mapped at its expected 133 * destination. 134 */ 135 void 136 arm32_vector_init(vaddr_t va, int which) 137 { 138 #if defined(CPU_ARMV7) || defined(CPU_ARM11) || defined(ARM_HAS_VBAR) 139 /* 140 * If this processor has the security extension, don't bother 141 * to move/map the vector page. Simply point VBAR to the copy 142 * that exists in the .text segment. 143 */ 144 #ifndef ARM_HAS_VBAR 145 if (va == ARM_VECTORS_LOW 146 && (armreg_pfr1_read() & ARM_PFR1_SEC_MASK) != 0) { 147 #endif 148 extern const uint32_t page0rel[]; 149 vector_page = (vaddr_t)page0rel; 150 KASSERT((vector_page & 0x1f) == 0); 151 armreg_vbar_write(vector_page); 152 #ifdef VERBOSE_INIT_ARM 153 printf(" vbar=%p", page0rel); 154 #endif 155 cpu_control(CPU_CONTROL_VECRELOC, 0); 156 return; 157 #ifndef ARM_HAS_VBAR 158 } 159 #endif 160 #endif 161 #ifndef ARM_HAS_VBAR 162 if (CPU_IS_PRIMARY(curcpu())) { 163 extern unsigned int page0[], page0_data[]; 164 unsigned int *vectors = (int *) va; 165 unsigned int *vectors_data = vectors + (page0_data - page0); 166 int vec; 167 168 /* 169 * Loop through the vectors we're taking over, and copy the 170 * vector's insn and data word. 171 */ 172 for (vec = 0; vec < ARM_NVEC; vec++) { 173 if ((which & (1 << vec)) == 0) { 174 /* Don't want to take over this vector. */ 175 continue; 176 } 177 vectors[vec] = page0[vec]; 178 vectors_data[vec] = page0_data[vec]; 179 } 180 181 /* Now sync the vectors. */ 182 cpu_icache_sync_range(va, (ARM_NVEC * 2) * sizeof(u_int)); 183 184 vector_page = va; 185 } 186 187 if (va == ARM_VECTORS_HIGH) { 188 /* 189 * Assume the MD caller knows what it's doing here, and 190 * really does want the vector page relocated. 191 * 192 * Note: This has to be done here (and not just in 193 * cpu_setup()) because the vector page needs to be 194 * accessible *before* cpu_startup() is called. 195 * Think ddb(9) ... 196 * 197 * NOTE: If the CPU control register is not readable, 198 * this will totally fail! We'll just assume that 199 * any system that has high vector support has a 200 * readable CPU control register, for now. If we 201 * ever encounter one that does not, we'll have to 202 * rethink this. 203 */ 204 cpu_control(CPU_CONTROL_VECRELOC, CPU_CONTROL_VECRELOC); 205 } 206 #endif 207 } 208 209 /* 210 * Debug function just to park the CPU 211 */ 212 213 void 214 halt(void) 215 { 216 while (1) 217 cpu_sleep(0); 218 } 219 220 221 /* Sync the discs, unmount the filesystems, and adjust the todr */ 222 223 void 224 bootsync(void) 225 { 226 static bool bootsyncdone = false; 227 228 if (bootsyncdone) return; 229 230 bootsyncdone = true; 231 232 /* Make sure we can still manage to do things */ 233 if (GetCPSR() & I32_bit) { 234 /* 235 * If we get here then boot has been called without RB_NOSYNC 236 * and interrupts were disabled. This means the boot() call 237 * did not come from a user process e.g. shutdown, but must 238 * have come from somewhere in the kernel. 239 */ 240 IRQenable; 241 printf("Warning IRQ's disabled during boot()\n"); 242 } 243 244 vfs_shutdown(); 245 246 resettodr(); 247 } 248 249 /* 250 * void cpu_startup(void) 251 * 252 * Machine dependent startup code. 253 * 254 */ 255 void 256 cpu_startup(void) 257 { 258 vaddr_t minaddr; 259 vaddr_t maxaddr; 260 char pbuf[9]; 261 262 /* 263 * Until we better locking, we have to live under the kernel lock. 264 */ 265 //KERNEL_LOCK(1, NULL); 266 267 /* Set the CPU control register */ 268 cpu_setup(boot_args); 269 270 #ifndef ARM_HAS_VBAR 271 /* Lock down zero page */ 272 vector_page_setprot(VM_PROT_READ); 273 #endif 274 275 /* 276 * Give pmap a chance to set up a few more things now the vm 277 * is initialised 278 */ 279 pmap_postinit(); 280 281 /* 282 * Initialize error message buffer (at end of core). 283 */ 284 285 /* msgbufphys was setup during the secondary boot strap */ 286 if (!pmap_extract(pmap_kernel(), (vaddr_t)msgbufaddr, NULL)) { 287 for (u_int loop = 0; loop < btoc(MSGBUFSIZE); ++loop) { 288 pmap_kenter_pa((vaddr_t)msgbufaddr + loop * PAGE_SIZE, 289 msgbufphys + loop * PAGE_SIZE, 290 VM_PROT_READ|VM_PROT_WRITE, 0); 291 } 292 } 293 pmap_update(pmap_kernel()); 294 initmsgbuf(msgbufaddr, round_page(MSGBUFSIZE)); 295 296 /* 297 * Identify ourselves for the msgbuf (everything printed earlier will 298 * not be buffered). 299 */ 300 printf("%s%s", copyright, version); 301 302 format_bytes(pbuf, sizeof(pbuf), arm_ptob(physmem)); 303 printf("total memory = %s\n", pbuf); 304 305 minaddr = 0; 306 307 /* 308 * Allocate a submap for physio 309 */ 310 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 311 VM_PHYS_SIZE, 0, false, NULL); 312 313 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 314 printf("avail memory = %s\n", pbuf); 315 316 struct lwp * const l = &lwp0; 317 struct pcb * const pcb = lwp_getpcb(l); 318 pcb->pcb_ksp = uvm_lwp_getuarea(l) + USPACE_SVC_STACK_TOP; 319 lwp_settrapframe(l, (struct trapframe *)pcb->pcb_ksp - 1); 320 } 321 322 /* 323 * machine dependent system variables. 324 */ 325 static int 326 sysctl_machdep_booted_device(SYSCTLFN_ARGS) 327 { 328 struct sysctlnode node; 329 330 if (booted_device == NULL) 331 return (EOPNOTSUPP); 332 333 node = *rnode; 334 node.sysctl_data = __UNCONST(device_xname(booted_device)); 335 node.sysctl_size = strlen(device_xname(booted_device)) + 1; 336 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 337 } 338 339 static int 340 sysctl_machdep_booted_kernel(SYSCTLFN_ARGS) 341 { 342 struct sysctlnode node; 343 344 if (booted_kernel == NULL || booted_kernel[0] == '\0') 345 return (EOPNOTSUPP); 346 347 node = *rnode; 348 node.sysctl_data = booted_kernel; 349 node.sysctl_size = strlen(booted_kernel) + 1; 350 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 351 } 352 353 static int 354 sysctl_machdep_cpu_arch(SYSCTLFN_ARGS) 355 { 356 struct sysctlnode node = *rnode; 357 node.sysctl_data = __UNCONST(cpu_arch); 358 node.sysctl_size = strlen(cpu_arch) + 1; 359 return sysctl_lookup(SYSCTLFN_CALL(&node)); 360 } 361 362 static int 363 sysctl_machdep_powersave(SYSCTLFN_ARGS) 364 { 365 struct sysctlnode node = *rnode; 366 int error, newval; 367 368 newval = cpu_do_powersave; 369 node.sysctl_data = &newval; 370 if (cpufuncs.cf_sleep == (void *) cpufunc_nullop) 371 node.sysctl_flags &= ~CTLFLAG_READWRITE; 372 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 373 if (error || newp == NULL || newval == cpu_do_powersave) 374 return (error); 375 376 if (newval < 0 || newval > 1) 377 return (EINVAL); 378 cpu_do_powersave = newval; 379 380 return (0); 381 } 382 383 static int 384 sysctl_hw_machine_arch(SYSCTLFN_ARGS) 385 { 386 struct sysctlnode node = *rnode; 387 node.sysctl_data = l->l_proc->p_md.md_march; 388 node.sysctl_size = strlen(l->l_proc->p_md.md_march) + 1; 389 return sysctl_lookup(SYSCTLFN_CALL(&node)); 390 } 391 392 SYSCTL_SETUP(sysctl_machdep_setup, "sysctl machdep subtree setup") 393 { 394 395 sysctl_createv(clog, 0, NULL, NULL, 396 CTLFLAG_PERMANENT, 397 CTLTYPE_NODE, "machdep", NULL, 398 NULL, 0, NULL, 0, 399 CTL_MACHDEP, CTL_EOL); 400 401 sysctl_createv(clog, 0, NULL, NULL, 402 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 403 CTLTYPE_INT, "debug", NULL, 404 NULL, 0, &kernel_debug, 0, 405 CTL_MACHDEP, CPU_DEBUG, CTL_EOL); 406 sysctl_createv(clog, 0, NULL, NULL, 407 CTLFLAG_PERMANENT, 408 CTLTYPE_STRING, "booted_device", NULL, 409 sysctl_machdep_booted_device, 0, NULL, 0, 410 CTL_MACHDEP, CPU_BOOTED_DEVICE, CTL_EOL); 411 sysctl_createv(clog, 0, NULL, NULL, 412 CTLFLAG_PERMANENT, 413 CTLTYPE_STRING, "booted_kernel", NULL, 414 sysctl_machdep_booted_kernel, 0, NULL, 0, 415 CTL_MACHDEP, CPU_BOOTED_KERNEL, CTL_EOL); 416 sysctl_createv(clog, 0, NULL, NULL, 417 CTLFLAG_PERMANENT, 418 CTLTYPE_STRUCT, "console_device", NULL, 419 sysctl_consdev, 0, NULL, sizeof(dev_t), 420 CTL_MACHDEP, CPU_CONSDEV, CTL_EOL); 421 sysctl_createv(clog, 0, NULL, NULL, 422 CTLFLAG_PERMANENT, 423 CTLTYPE_STRING, "cpu_arch", NULL, 424 sysctl_machdep_cpu_arch, 0, NULL, 0, 425 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 426 sysctl_createv(clog, 0, NULL, NULL, 427 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 428 CTLTYPE_INT, "powersave", NULL, 429 sysctl_machdep_powersave, 0, &cpu_do_powersave, 0, 430 CTL_MACHDEP, CPU_POWERSAVE, CTL_EOL); 431 sysctl_createv(clog, 0, NULL, NULL, 432 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 433 CTLTYPE_INT, "cpu_id", NULL, 434 NULL, curcpu()->ci_arm_cpuid, NULL, 0, 435 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 436 #ifdef FPU_VFP 437 sysctl_createv(clog, 0, NULL, NULL, 438 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 439 CTLTYPE_INT, "fpu_id", NULL, 440 NULL, 0, &cpu_info_store.ci_vfp_id, 0, 441 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 442 #endif 443 sysctl_createv(clog, 0, NULL, NULL, 444 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 445 CTLTYPE_INT, "fpu_present", NULL, 446 NULL, 0, &cpu_fpu_present, 0, 447 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 448 sysctl_createv(clog, 0, NULL, NULL, 449 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 450 CTLTYPE_INT, "hwdiv_present", NULL, 451 NULL, 0, &cpu_hwdiv_present, 0, 452 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 453 sysctl_createv(clog, 0, NULL, NULL, 454 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 455 CTLTYPE_INT, "neon_present", NULL, 456 NULL, 0, &cpu_neon_present, 0, 457 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 458 sysctl_createv(clog, 0, NULL, NULL, 459 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 460 CTLTYPE_STRUCT, "id_isar", NULL, 461 NULL, 0, 462 cpu_instruction_set_attributes, 463 sizeof(cpu_instruction_set_attributes), 464 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 465 sysctl_createv(clog, 0, NULL, NULL, 466 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 467 CTLTYPE_STRUCT, "id_mmfr", NULL, 468 NULL, 0, 469 cpu_memory_model_features, 470 sizeof(cpu_memory_model_features), 471 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 472 sysctl_createv(clog, 0, NULL, NULL, 473 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 474 CTLTYPE_STRUCT, "id_pfr", NULL, 475 NULL, 0, 476 cpu_processor_features, 477 sizeof(cpu_processor_features), 478 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 479 sysctl_createv(clog, 0, NULL, NULL, 480 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 481 CTLTYPE_STRUCT, "id_mvfr", NULL, 482 NULL, 0, 483 cpu_media_and_vfp_features, 484 sizeof(cpu_media_and_vfp_features), 485 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 486 sysctl_createv(clog, 0, NULL, NULL, 487 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 488 CTLTYPE_INT, "simd_present", NULL, 489 NULL, 0, &cpu_simd_present, 0, 490 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 491 sysctl_createv(clog, 0, NULL, NULL, 492 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 493 CTLTYPE_INT, "simdex_present", NULL, 494 NULL, 0, &cpu_simdex_present, 0, 495 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 496 sysctl_createv(clog, 0, NULL, NULL, 497 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 498 CTLTYPE_INT, "synchprim_present", NULL, 499 NULL, 0, &cpu_synchprim_present, 0, 500 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 501 sysctl_createv(clog, 0, NULL, NULL, 502 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 503 CTLTYPE_INT, "printfataltraps", NULL, 504 NULL, 0, &cpu_printfataltraps, 0, 505 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 506 507 508 /* 509 * We need override the usual CTL_HW HW_MACHINE_ARCH so we 510 * return the right machine_arch based on the running executable. 511 */ 512 sysctl_createv(clog, 0, NULL, NULL, 513 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 514 CTLTYPE_STRING, "machine_arch", 515 SYSCTL_DESCR("Machine CPU class"), 516 sysctl_hw_machine_arch, 0, NULL, 0, 517 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 518 } 519 520 void 521 parse_mi_bootargs(char *args) 522 { 523 int integer; 524 525 if (get_bootconf_option(args, "single", BOOTOPT_TYPE_BOOLEAN, &integer) 526 || get_bootconf_option(args, "-s", BOOTOPT_TYPE_BOOLEAN, &integer)) 527 if (integer) 528 boothowto |= RB_SINGLE; 529 if (get_bootconf_option(args, "kdb", BOOTOPT_TYPE_BOOLEAN, &integer) 530 || get_bootconf_option(args, "-k", BOOTOPT_TYPE_BOOLEAN, &integer) 531 || get_bootconf_option(args, "-d", BOOTOPT_TYPE_BOOLEAN, &integer)) 532 if (integer) 533 boothowto |= RB_KDB; 534 if (get_bootconf_option(args, "ask", BOOTOPT_TYPE_BOOLEAN, &integer) 535 || get_bootconf_option(args, "-a", BOOTOPT_TYPE_BOOLEAN, &integer)) 536 if (integer) 537 boothowto |= RB_ASKNAME; 538 539 #ifdef PMAP_DEBUG 540 if (get_bootconf_option(args, "pmapdebug", BOOTOPT_TYPE_INT, &integer)) { 541 pmap_debug_level = integer; 542 pmap_debug(pmap_debug_level); 543 } 544 #endif /* PMAP_DEBUG */ 545 546 /* if (get_bootconf_option(args, "nbuf", BOOTOPT_TYPE_INT, &integer)) 547 bufpages = integer;*/ 548 549 #if defined(MEMORY_DISK_HOOKS) && !defined(MEMORY_DISK_ROOT_SIZE) 550 if (get_bootconf_option(args, "memorydisc", BOOTOPT_TYPE_INT, &integer) 551 || get_bootconf_option(args, "memorydisk", BOOTOPT_TYPE_INT, &integer)) { 552 md_root_size = integer; 553 md_root_size *= 1024; 554 if (md_root_size < 32*1024) 555 md_root_size = 32*1024; 556 if (md_root_size > 2048*1024) 557 md_root_size = 2048*1024; 558 } 559 #endif /* MEMORY_DISK_HOOKS && !MEMORY_DISK_ROOT_SIZE */ 560 561 if (get_bootconf_option(args, "quiet", BOOTOPT_TYPE_BOOLEAN, &integer) 562 || get_bootconf_option(args, "-q", BOOTOPT_TYPE_BOOLEAN, &integer)) 563 if (integer) 564 boothowto |= AB_QUIET; 565 if (get_bootconf_option(args, "verbose", BOOTOPT_TYPE_BOOLEAN, &integer) 566 || get_bootconf_option(args, "-v", BOOTOPT_TYPE_BOOLEAN, &integer)) 567 if (integer) 568 boothowto |= AB_VERBOSE; 569 } 570 571 #ifdef __HAVE_FAST_SOFTINTS 572 #if IPL_SOFTSERIAL != IPL_SOFTNET + 1 573 #error IPLs are screwed up 574 #elif IPL_SOFTNET != IPL_SOFTBIO + 1 575 #error IPLs are screwed up 576 #elif IPL_SOFTBIO != IPL_SOFTCLOCK + 1 577 #error IPLs are screwed up 578 #elif !(IPL_SOFTCLOCK > IPL_NONE) 579 #error IPLs are screwed up 580 #elif (IPL_NONE != 0) 581 #error IPLs are screwed up 582 #endif 583 584 #ifndef __HAVE_PIC_FAST_SOFTINTS 585 #define SOFTINT2IPLMAP \ 586 (((IPL_SOFTSERIAL - IPL_SOFTCLOCK) << (SOFTINT_SERIAL * 4)) | \ 587 ((IPL_SOFTNET - IPL_SOFTCLOCK) << (SOFTINT_NET * 4)) | \ 588 ((IPL_SOFTBIO - IPL_SOFTCLOCK) << (SOFTINT_BIO * 4)) | \ 589 ((IPL_SOFTCLOCK - IPL_SOFTCLOCK) << (SOFTINT_CLOCK * 4))) 590 #define SOFTINT2IPL(l) ((SOFTINT2IPLMAP >> ((l) * 4)) & 0x0f) 591 592 /* 593 * This returns a mask of softint IPLs that be dispatch at <ipl> 594 * SOFTIPLMASK(IPL_NONE) = 0x0000000f 595 * SOFTIPLMASK(IPL_SOFTCLOCK) = 0x0000000e 596 * SOFTIPLMASK(IPL_SOFTBIO) = 0x0000000c 597 * SOFTIPLMASK(IPL_SOFTNET) = 0x00000008 598 * SOFTIPLMASK(IPL_SOFTSERIAL) = 0x00000000 599 */ 600 #define SOFTIPLMASK(ipl) ((0x0f << (ipl)) & 0x0f) 601 602 void softint_switch(lwp_t *, int); 603 604 void 605 softint_trigger(uintptr_t mask) 606 { 607 curcpu()->ci_softints |= mask; 608 } 609 610 void 611 softint_init_md(lwp_t *l, u_int level, uintptr_t *machdep) 612 { 613 lwp_t ** lp = &l->l_cpu->ci_softlwps[level]; 614 KASSERT(*lp == NULL || *lp == l); 615 *lp = l; 616 *machdep = 1 << SOFTINT2IPL(level); 617 KASSERT(level != SOFTINT_CLOCK || *machdep == (1 << (IPL_SOFTCLOCK - IPL_SOFTCLOCK))); 618 KASSERT(level != SOFTINT_BIO || *machdep == (1 << (IPL_SOFTBIO - IPL_SOFTCLOCK))); 619 KASSERT(level != SOFTINT_NET || *machdep == (1 << (IPL_SOFTNET - IPL_SOFTCLOCK))); 620 KASSERT(level != SOFTINT_SERIAL || *machdep == (1 << (IPL_SOFTSERIAL - IPL_SOFTCLOCK))); 621 } 622 623 void 624 dosoftints(void) 625 { 626 struct cpu_info * const ci = curcpu(); 627 const int opl = ci->ci_cpl; 628 const uint32_t softiplmask = SOFTIPLMASK(opl); 629 630 splhigh(); 631 for (;;) { 632 u_int softints = ci->ci_softints & softiplmask; 633 KASSERT((softints != 0) == ((ci->ci_softints >> opl) != 0)); 634 KASSERT(opl == IPL_NONE || (softints & (1 << (opl - IPL_SOFTCLOCK))) == 0); 635 if (softints == 0) { 636 splx(opl); 637 return; 638 } 639 #define DOSOFTINT(n) \ 640 if (ci->ci_softints & (1 << (IPL_SOFT ## n - IPL_SOFTCLOCK))) { \ 641 ci->ci_softints &= \ 642 ~(1 << (IPL_SOFT ## n - IPL_SOFTCLOCK)); \ 643 softint_switch(ci->ci_softlwps[SOFTINT_ ## n], \ 644 IPL_SOFT ## n); \ 645 continue; \ 646 } 647 DOSOFTINT(SERIAL); 648 DOSOFTINT(NET); 649 DOSOFTINT(BIO); 650 DOSOFTINT(CLOCK); 651 panic("dosoftints wtf (softints=%u?, ipl=%d)", softints, opl); 652 } 653 } 654 #endif /* !__HAVE_PIC_FAST_SOFTINTS */ 655 #endif /* __HAVE_FAST_SOFTINTS */ 656 657 #ifdef MODULAR 658 /* 659 * Push any modules loaded by the boot loader. 660 */ 661 void 662 module_init_md(void) 663 { 664 } 665 #endif /* MODULAR */ 666 667 int 668 mm_md_physacc(paddr_t pa, vm_prot_t prot) 669 { 670 671 return (pa < ctob(physmem)) ? 0 : EFAULT; 672 } 673 674 #ifdef __HAVE_CPU_UAREA_ALLOC_IDLELWP 675 vaddr_t 676 cpu_uarea_alloc_idlelwp(struct cpu_info *ci) 677 { 678 const vaddr_t va = idlestack.pv_va + ci->ci_cpuid * USPACE; 679 // printf("%s: %s: va=%lx\n", __func__, ci->ci_data.cpu_name, va); 680 return va; 681 } 682 #endif 683 684 #ifdef MULTIPROCESSOR 685 void 686 cpu_boot_secondary_processors(void) 687 { 688 #ifdef VERBOSE_INIT_ARM 689 printf("%s: writing mbox with %#x\n", __func__, arm_cpu_hatched); 690 #endif 691 arm_cpu_mbox = arm_cpu_hatched; 692 membar_producer(); 693 #ifdef _ARM_ARCH_7 694 __asm __volatile("sev; sev; sev"); 695 #endif 696 while (arm_cpu_mbox) { 697 __asm("wfe"); 698 } 699 } 700 701 void 702 xc_send_ipi(struct cpu_info *ci) 703 { 704 KASSERT(kpreempt_disabled()); 705 KASSERT(curcpu() != ci); 706 707 intr_ipi_send(ci != NULL ? ci->ci_kcpuset : NULL, IPI_XCALL); 708 } 709 #endif /* MULTIPROCESSOR */ 710 711 #ifdef __HAVE_MM_MD_DIRECT_MAPPED_PHYS 712 bool 713 mm_md_direct_mapped_phys(paddr_t pa, vaddr_t *vap) 714 { 715 bool rv; 716 vaddr_t va = pmap_direct_mapped_phys(pa, &rv, 0); 717 if (rv) { 718 *vap = va; 719 } 720 return rv; 721 } 722 #endif 723
Indexes created Tue Sep 30 10:09:55 GMT 2025