arm32_machdep.c revision 1.99
1 /* $NetBSD: arm32_machdep.c,v 1.99 2014/01/11 17:32:20 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 1.99 2014/01/11 17:32:20 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 const char *cpu_arch = ""; 110 111 int cpu_instruction_set_attributes[6]; 112 int cpu_memory_model_features[4]; 113 int cpu_processor_features[2]; 114 int cpu_media_and_vfp_features[2]; 115 116 /* exported variable to be filled in by the bootloaders */ 117 char *booted_kernel; 118 119 /* Prototypes */ 120 121 void data_abort_handler(trapframe_t *frame); 122 void prefetch_abort_handler(trapframe_t *frame); 123 extern void configure(void); 124 125 /* 126 * arm32_vector_init: 127 * 128 * Initialize the vector page, and select whether or not to 129 * relocate the vectors. 130 * 131 * NOTE: We expect the vector page to be mapped at its expected 132 * destination. 133 */ 134 void 135 arm32_vector_init(vaddr_t va, int which) 136 { 137 #if defined(CPU_ARMV7) || defined(CPU_ARM11) || defined(ARM_HAS_VBAR) 138 /* 139 * If this processor has the security extension, don't bother 140 * to move/map the vector page. Simply point VBAR to the copy 141 * that exists in the .text segment. 142 */ 143 #ifndef ARM_HAS_VBAR 144 if (va == ARM_VECTORS_LOW 145 && (armreg_pfr1_read() & ARM_PFR1_SEC_MASK) != 0) { 146 #endif 147 extern const uint32_t page0rel[]; 148 vector_page = (vaddr_t)page0rel; 149 KASSERT((vector_page & 0x1f) == 0); 150 armreg_vbar_write(vector_page); 151 #ifdef VERBOSE_INIT_ARM 152 printf(" vbar=%p", page0rel); 153 #endif 154 cpu_control(CPU_CONTROL_VECRELOC, 0); 155 return; 156 #ifndef ARM_HAS_VBAR 157 } 158 #endif 159 #endif 160 #ifndef ARM_HAS_VBAR 161 if (CPU_IS_PRIMARY(curcpu())) { 162 extern unsigned int page0[], page0_data[]; 163 unsigned int *vectors = (int *) va; 164 unsigned int *vectors_data = vectors + (page0_data - page0); 165 int vec; 166 167 /* 168 * Loop through the vectors we're taking over, and copy the 169 * vector's insn and data word. 170 */ 171 for (vec = 0; vec < ARM_NVEC; vec++) { 172 if ((which & (1 << vec)) == 0) { 173 /* Don't want to take over this vector. */ 174 continue; 175 } 176 vectors[vec] = page0[vec]; 177 vectors_data[vec] = page0_data[vec]; 178 } 179 180 /* Now sync the vectors. */ 181 cpu_icache_sync_range(va, (ARM_NVEC * 2) * sizeof(u_int)); 182 183 vector_page = va; 184 } 185 186 if (va == ARM_VECTORS_HIGH) { 187 /* 188 * Assume the MD caller knows what it's doing here, and 189 * really does want the vector page relocated. 190 * 191 * Note: This has to be done here (and not just in 192 * cpu_setup()) because the vector page needs to be 193 * accessible *before* cpu_startup() is called. 194 * Think ddb(9) ... 195 * 196 * NOTE: If the CPU control register is not readable, 197 * this will totally fail! We'll just assume that 198 * any system that has high vector support has a 199 * readable CPU control register, for now. If we 200 * ever encounter one that does not, we'll have to 201 * rethink this. 202 */ 203 cpu_control(CPU_CONTROL_VECRELOC, CPU_CONTROL_VECRELOC); 204 } 205 #endif 206 } 207 208 /* 209 * Debug function just to park the CPU 210 */ 211 212 void 213 halt(void) 214 { 215 while (1) 216 cpu_sleep(0); 217 } 218 219 220 /* Sync the discs, unmount the filesystems, and adjust the todr */ 221 222 void 223 bootsync(void) 224 { 225 static bool bootsyncdone = false; 226 227 if (bootsyncdone) return; 228 229 bootsyncdone = true; 230 231 /* Make sure we can still manage to do things */ 232 if (GetCPSR() & I32_bit) { 233 /* 234 * If we get here then boot has been called without RB_NOSYNC 235 * and interrupts were disabled. This means the boot() call 236 * did not come from a user process e.g. shutdown, but must 237 * have come from somewhere in the kernel. 238 */ 239 IRQenable; 240 printf("Warning IRQ's disabled during boot()\n"); 241 } 242 243 vfs_shutdown(); 244 245 resettodr(); 246 } 247 248 /* 249 * void cpu_startup(void) 250 * 251 * Machine dependent startup code. 252 * 253 */ 254 void 255 cpu_startup(void) 256 { 257 vaddr_t minaddr; 258 vaddr_t maxaddr; 259 u_int loop; 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 for (loop = 0; loop < btoc(MSGBUFSIZE); ++loop) 287 pmap_kenter_pa((vaddr_t)msgbufaddr + loop * PAGE_SIZE, 288 msgbufphys + loop * PAGE_SIZE, 289 VM_PROT_READ|VM_PROT_WRITE, 0); 290 pmap_update(pmap_kernel()); 291 initmsgbuf(msgbufaddr, round_page(MSGBUFSIZE)); 292 293 /* 294 * Identify ourselves for the msgbuf (everything printed earlier will 295 * not be buffered). 296 */ 297 printf("%s%s", copyright, version); 298 299 format_bytes(pbuf, sizeof(pbuf), arm_ptob(physmem)); 300 printf("total memory = %s\n", pbuf); 301 302 minaddr = 0; 303 304 /* 305 * Allocate a submap for physio 306 */ 307 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 308 VM_PHYS_SIZE, 0, false, NULL); 309 310 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 311 printf("avail memory = %s\n", pbuf); 312 313 struct lwp * const l = &lwp0; 314 struct pcb * const pcb = lwp_getpcb(l); 315 pcb->pcb_ksp = uvm_lwp_getuarea(l) + USPACE_SVC_STACK_TOP; 316 lwp_settrapframe(l, (struct trapframe *)pcb->pcb_ksp - 1); 317 } 318 319 /* 320 * machine dependent system variables. 321 */ 322 static int 323 sysctl_machdep_booted_device(SYSCTLFN_ARGS) 324 { 325 struct sysctlnode node; 326 327 if (booted_device == NULL) 328 return (EOPNOTSUPP); 329 330 node = *rnode; 331 node.sysctl_data = __UNCONST(device_xname(booted_device)); 332 node.sysctl_size = strlen(device_xname(booted_device)) + 1; 333 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 334 } 335 336 static int 337 sysctl_machdep_booted_kernel(SYSCTLFN_ARGS) 338 { 339 struct sysctlnode node; 340 341 if (booted_kernel == NULL || booted_kernel[0] == '\0') 342 return (EOPNOTSUPP); 343 344 node = *rnode; 345 node.sysctl_data = booted_kernel; 346 node.sysctl_size = strlen(booted_kernel) + 1; 347 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 348 } 349 350 static int 351 sysctl_machdep_cpu_arch(SYSCTLFN_ARGS) 352 { 353 struct sysctlnode node = *rnode; 354 node.sysctl_data = __UNCONST(cpu_arch); 355 node.sysctl_size = strlen(cpu_arch) + 1; 356 return sysctl_lookup(SYSCTLFN_CALL(&node)); 357 } 358 359 static int 360 sysctl_machdep_powersave(SYSCTLFN_ARGS) 361 { 362 struct sysctlnode node = *rnode; 363 int error, newval; 364 365 newval = cpu_do_powersave; 366 node.sysctl_data = &newval; 367 if (cpufuncs.cf_sleep == (void *) cpufunc_nullop) 368 node.sysctl_flags &= ~CTLFLAG_READWRITE; 369 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 370 if (error || newp == NULL || newval == cpu_do_powersave) 371 return (error); 372 373 if (newval < 0 || newval > 1) 374 return (EINVAL); 375 cpu_do_powersave = newval; 376 377 return (0); 378 } 379 380 static int 381 sysctl_hw_machine_arch(SYSCTLFN_ARGS) 382 { 383 struct sysctlnode node = *rnode; 384 node.sysctl_data = l->l_proc->p_md.md_march; 385 node.sysctl_size = strlen(l->l_proc->p_md.md_march) + 1; 386 return sysctl_lookup(SYSCTLFN_CALL(&node)); 387 } 388 389 SYSCTL_SETUP(sysctl_machdep_setup, "sysctl machdep subtree setup") 390 { 391 392 sysctl_createv(clog, 0, NULL, NULL, 393 CTLFLAG_PERMANENT, 394 CTLTYPE_NODE, "machdep", NULL, 395 NULL, 0, NULL, 0, 396 CTL_MACHDEP, CTL_EOL); 397 398 sysctl_createv(clog, 0, NULL, NULL, 399 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 400 CTLTYPE_INT, "debug", NULL, 401 NULL, 0, &kernel_debug, 0, 402 CTL_MACHDEP, CPU_DEBUG, CTL_EOL); 403 sysctl_createv(clog, 0, NULL, NULL, 404 CTLFLAG_PERMANENT, 405 CTLTYPE_STRING, "booted_device", NULL, 406 sysctl_machdep_booted_device, 0, NULL, 0, 407 CTL_MACHDEP, CPU_BOOTED_DEVICE, CTL_EOL); 408 sysctl_createv(clog, 0, NULL, NULL, 409 CTLFLAG_PERMANENT, 410 CTLTYPE_STRING, "booted_kernel", NULL, 411 sysctl_machdep_booted_kernel, 0, NULL, 0, 412 CTL_MACHDEP, CPU_BOOTED_KERNEL, CTL_EOL); 413 sysctl_createv(clog, 0, NULL, NULL, 414 CTLFLAG_PERMANENT, 415 CTLTYPE_STRUCT, "console_device", NULL, 416 sysctl_consdev, 0, NULL, sizeof(dev_t), 417 CTL_MACHDEP, CPU_CONSDEV, CTL_EOL); 418 sysctl_createv(clog, 0, NULL, NULL, 419 CTLFLAG_PERMANENT, 420 CTLTYPE_STRING, "cpu_arch", NULL, 421 sysctl_machdep_cpu_arch, 0, NULL, 0, 422 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 423 sysctl_createv(clog, 0, NULL, NULL, 424 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 425 CTLTYPE_INT, "powersave", NULL, 426 sysctl_machdep_powersave, 0, &cpu_do_powersave, 0, 427 CTL_MACHDEP, CPU_POWERSAVE, CTL_EOL); 428 sysctl_createv(clog, 0, NULL, NULL, 429 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 430 CTLTYPE_INT, "cpu_id", NULL, 431 NULL, curcpu()->ci_arm_cpuid, NULL, 0, 432 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 433 #ifdef FPU_VFP 434 sysctl_createv(clog, 0, NULL, NULL, 435 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 436 CTLTYPE_INT, "fpu_id", NULL, 437 NULL, 0, &cpu_info_store.ci_vfp_id, 0, 438 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 439 #endif 440 sysctl_createv(clog, 0, NULL, NULL, 441 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 442 CTLTYPE_INT, "fpu_present", NULL, 443 NULL, 0, &cpu_fpu_present, 0, 444 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 445 sysctl_createv(clog, 0, NULL, NULL, 446 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 447 CTLTYPE_INT, "hwdiv_present", NULL, 448 NULL, 0, &cpu_hwdiv_present, 0, 449 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 450 sysctl_createv(clog, 0, NULL, NULL, 451 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 452 CTLTYPE_INT, "neon_present", NULL, 453 NULL, 0, &cpu_neon_present, 0, 454 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 455 sysctl_createv(clog, 0, NULL, NULL, 456 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 457 CTLTYPE_STRUCT, "id_isar", NULL, 458 NULL, 0, 459 cpu_instruction_set_attributes, 460 sizeof(cpu_instruction_set_attributes), 461 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 462 sysctl_createv(clog, 0, NULL, NULL, 463 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 464 CTLTYPE_STRUCT, "id_mmfr", NULL, 465 NULL, 0, 466 cpu_memory_model_features, 467 sizeof(cpu_memory_model_features), 468 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 469 sysctl_createv(clog, 0, NULL, NULL, 470 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 471 CTLTYPE_STRUCT, "id_pfr", NULL, 472 NULL, 0, 473 cpu_processor_features, 474 sizeof(cpu_processor_features), 475 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 476 sysctl_createv(clog, 0, NULL, NULL, 477 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 478 CTLTYPE_STRUCT, "id_mvfr", NULL, 479 NULL, 0, 480 cpu_media_and_vfp_features, 481 sizeof(cpu_media_and_vfp_features), 482 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 483 sysctl_createv(clog, 0, NULL, NULL, 484 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 485 CTLTYPE_INT, "simd_present", NULL, 486 NULL, 0, &cpu_simd_present, 0, 487 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 488 sysctl_createv(clog, 0, NULL, NULL, 489 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 490 CTLTYPE_INT, "simdex_present", NULL, 491 NULL, 0, &cpu_simdex_present, 0, 492 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 493 sysctl_createv(clog, 0, NULL, NULL, 494 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 495 CTLTYPE_INT, "printfataltraps", NULL, 496 NULL, 0, &cpu_printfataltraps, 0, 497 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 498 499 500 /* 501 * We need override the usual CTL_HW HW_MACHINE_ARCH so we 502 * return the right machine_arch based on the running executable. 503 */ 504 sysctl_createv(clog, 0, NULL, NULL, 505 CTLFLAG_PERMANENT, 506 CTLTYPE_NODE, "hw", NULL, 507 NULL, 0, NULL, 0, 508 CTL_HW, CTL_EOL); 509 sysctl_createv(clog, 0, NULL, NULL, 510 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 511 CTLTYPE_STRING, "machine_arch", 512 SYSCTL_DESCR("Machine CPU class"), 513 sysctl_hw_machine_arch, 0, NULL, 0, 514 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 515 } 516 517 void 518 parse_mi_bootargs(char *args) 519 { 520 int integer; 521 522 if (get_bootconf_option(args, "single", BOOTOPT_TYPE_BOOLEAN, &integer) 523 || get_bootconf_option(args, "-s", BOOTOPT_TYPE_BOOLEAN, &integer)) 524 if (integer) 525 boothowto |= RB_SINGLE; 526 if (get_bootconf_option(args, "kdb", BOOTOPT_TYPE_BOOLEAN, &integer) 527 || get_bootconf_option(args, "-k", BOOTOPT_TYPE_BOOLEAN, &integer) 528 || get_bootconf_option(args, "-d", BOOTOPT_TYPE_BOOLEAN, &integer)) 529 if (integer) 530 boothowto |= RB_KDB; 531 if (get_bootconf_option(args, "ask", BOOTOPT_TYPE_BOOLEAN, &integer) 532 || get_bootconf_option(args, "-a", BOOTOPT_TYPE_BOOLEAN, &integer)) 533 if (integer) 534 boothowto |= RB_ASKNAME; 535 536 #ifdef PMAP_DEBUG 537 if (get_bootconf_option(args, "pmapdebug", BOOTOPT_TYPE_INT, &integer)) { 538 pmap_debug_level = integer; 539 pmap_debug(pmap_debug_level); 540 } 541 #endif /* PMAP_DEBUG */ 542 543 /* if (get_bootconf_option(args, "nbuf", BOOTOPT_TYPE_INT, &integer)) 544 bufpages = integer;*/ 545 546 #if defined(MEMORY_DISK_HOOKS) && !defined(MEMORY_DISK_ROOT_SIZE) 547 if (get_bootconf_option(args, "memorydisc", BOOTOPT_TYPE_INT, &integer) 548 || get_bootconf_option(args, "memorydisk", BOOTOPT_TYPE_INT, &integer)) { 549 md_root_size = integer; 550 md_root_size *= 1024; 551 if (md_root_size < 32*1024) 552 md_root_size = 32*1024; 553 if (md_root_size > 2048*1024) 554 md_root_size = 2048*1024; 555 } 556 #endif /* MEMORY_DISK_HOOKS && !MEMORY_DISK_ROOT_SIZE */ 557 558 if (get_bootconf_option(args, "quiet", BOOTOPT_TYPE_BOOLEAN, &integer) 559 || get_bootconf_option(args, "-q", BOOTOPT_TYPE_BOOLEAN, &integer)) 560 if (integer) 561 boothowto |= AB_QUIET; 562 if (get_bootconf_option(args, "verbose", BOOTOPT_TYPE_BOOLEAN, &integer) 563 || get_bootconf_option(args, "-v", BOOTOPT_TYPE_BOOLEAN, &integer)) 564 if (integer) 565 boothowto |= AB_VERBOSE; 566 } 567 568 #ifdef __HAVE_FAST_SOFTINTS 569 #if IPL_SOFTSERIAL != IPL_SOFTNET + 1 570 #error IPLs are screwed up 571 #elif IPL_SOFTNET != IPL_SOFTBIO + 1 572 #error IPLs are screwed up 573 #elif IPL_SOFTBIO != IPL_SOFTCLOCK + 1 574 #error IPLs are screwed up 575 #elif !(IPL_SOFTCLOCK > IPL_NONE) 576 #error IPLs are screwed up 577 #elif (IPL_NONE != 0) 578 #error IPLs are screwed up 579 #endif 580 581 #ifndef __HAVE_PIC_FAST_SOFTINTS 582 #define SOFTINT2IPLMAP \ 583 (((IPL_SOFTSERIAL - IPL_SOFTCLOCK) << (SOFTINT_SERIAL * 4)) | \ 584 ((IPL_SOFTNET - IPL_SOFTCLOCK) << (SOFTINT_NET * 4)) | \ 585 ((IPL_SOFTBIO - IPL_SOFTCLOCK) << (SOFTINT_BIO * 4)) | \ 586 ((IPL_SOFTCLOCK - IPL_SOFTCLOCK) << (SOFTINT_CLOCK * 4))) 587 #define SOFTINT2IPL(l) ((SOFTINT2IPLMAP >> ((l) * 4)) & 0x0f) 588 589 /* 590 * This returns a mask of softint IPLs that be dispatch at <ipl> 591 * SOFTIPLMASK(IPL_NONE) = 0x0000000f 592 * SOFTIPLMASK(IPL_SOFTCLOCK) = 0x0000000e 593 * SOFTIPLMASK(IPL_SOFTBIO) = 0x0000000c 594 * SOFTIPLMASK(IPL_SOFTNET) = 0x00000008 595 * SOFTIPLMASK(IPL_SOFTSERIAL) = 0x00000000 596 */ 597 #define SOFTIPLMASK(ipl) ((0x0f << (ipl)) & 0x0f) 598 599 void softint_switch(lwp_t *, int); 600 601 void 602 softint_trigger(uintptr_t mask) 603 { 604 curcpu()->ci_softints |= mask; 605 } 606 607 void 608 softint_init_md(lwp_t *l, u_int level, uintptr_t *machdep) 609 { 610 lwp_t ** lp = &l->l_cpu->ci_softlwps[level]; 611 KASSERT(*lp == NULL || *lp == l); 612 *lp = l; 613 *machdep = 1 << SOFTINT2IPL(level); 614 KASSERT(level != SOFTINT_CLOCK || *machdep == (1 << (IPL_SOFTCLOCK - IPL_SOFTCLOCK))); 615 KASSERT(level != SOFTINT_BIO || *machdep == (1 << (IPL_SOFTBIO - IPL_SOFTCLOCK))); 616 KASSERT(level != SOFTINT_NET || *machdep == (1 << (IPL_SOFTNET - IPL_SOFTCLOCK))); 617 KASSERT(level != SOFTINT_SERIAL || *machdep == (1 << (IPL_SOFTSERIAL - IPL_SOFTCLOCK))); 618 } 619 620 void 621 dosoftints(void) 622 { 623 struct cpu_info * const ci = curcpu(); 624 const int opl = ci->ci_cpl; 625 const uint32_t softiplmask = SOFTIPLMASK(opl); 626 627 splhigh(); 628 for (;;) { 629 u_int softints = ci->ci_softints & softiplmask; 630 KASSERT((softints != 0) == ((ci->ci_softints >> opl) != 0)); 631 KASSERT(opl == IPL_NONE || (softints & (1 << (opl - IPL_SOFTCLOCK))) == 0); 632 if (softints == 0) { 633 splx(opl); 634 return; 635 } 636 #define DOSOFTINT(n) \ 637 if (ci->ci_softints & (1 << (IPL_SOFT ## n - IPL_SOFTCLOCK))) { \ 638 ci->ci_softints &= \ 639 ~(1 << (IPL_SOFT ## n - IPL_SOFTCLOCK)); \ 640 softint_switch(ci->ci_softlwps[SOFTINT_ ## n], \ 641 IPL_SOFT ## n); \ 642 continue; \ 643 } 644 DOSOFTINT(SERIAL); 645 DOSOFTINT(NET); 646 DOSOFTINT(BIO); 647 DOSOFTINT(CLOCK); 648 panic("dosoftints wtf (softints=%u?, ipl=%d)", softints, opl); 649 } 650 } 651 #endif /* !__HAVE_PIC_FAST_SOFTINTS */ 652 #endif /* __HAVE_FAST_SOFTINTS */ 653 654 #ifdef MODULAR 655 /* 656 * Push any modules loaded by the boot loader. 657 */ 658 void 659 module_init_md(void) 660 { 661 } 662 #endif /* MODULAR */ 663 664 int 665 mm_md_physacc(paddr_t pa, vm_prot_t prot) 666 { 667 668 return (pa < ctob(physmem)) ? 0 : EFAULT; 669 } 670 671 #ifdef __HAVE_CPU_UAREA_ALLOC_IDLELWP 672 vaddr_t 673 cpu_uarea_alloc_idlelwp(struct cpu_info *ci) 674 { 675 const vaddr_t va = idlestack.pv_va + ci->ci_cpuid * USPACE; 676 // printf("%s: %s: va=%lx\n", __func__, ci->ci_data.cpu_name, va); 677 return va; 678 } 679 #endif 680 681 #ifdef MULTIPROCESSOR 682 void 683 cpu_boot_secondary_processors(void) 684 { 685 uint32_t mbox; 686 kcpuset_export_u32(kcpuset_attached, &mbox, sizeof(mbox)); 687 atomic_swap_32(&arm_cpu_mbox, mbox); 688 membar_producer(); 689 #ifdef _ARM_ARCH_7 690 __asm __volatile("sev; sev; sev"); 691 #endif 692 } 693 694 void 695 xc_send_ipi(struct cpu_info *ci) 696 { 697 KASSERT(kpreempt_disabled()); 698 KASSERT(curcpu() != ci); 699 700 701 if (ci) { 702 /* Unicast, remote CPU */ 703 printf("%s: -> %s", __func__, ci->ci_data.cpu_name); 704 intr_ipi_send(ci->ci_kcpuset, IPI_XCALL); 705 } else { 706 printf("%s: -> !%s", __func__, ci->ci_data.cpu_name); 707 /* Broadcast to all but ourselves */ 708 kcpuset_t *kcp; 709 kcpuset_create(&kcp, (ci != NULL)); 710 KASSERT(kcp != NULL); 711 kcpuset_copy(kcp, kcpuset_running); 712 kcpuset_clear(kcp, cpu_index(ci)); 713 intr_ipi_send(kcp, IPI_XCALL); 714 kcpuset_destroy(kcp); 715 } 716 printf("\n"); 717 } 718 #endif /* MULTIPROCESSOR */ 719 720 #ifdef __HAVE_MM_MD_DIRECT_MAPPED_PHYS 721 bool 722 mm_md_direct_mapped_phys(paddr_t pa, vaddr_t *vap) 723 { 724 if (physical_start <= pa && pa < physical_end) { 725 *vap = KERNEL_BASE + (pa - physical_start); 726 return true; 727 } 728 729 return false; 730 } 731 #endif 732
Indexes created Mon Sep 29 15:09:53 GMT 2025