1 /* $NetBSD: machdep.c,v 1.63 2001/02/22 07:11:13 chs Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1986, 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: Utah Hdr: machdep.c 1.74 92/12/20 41 * from: @(#)machdep.c 8.10 (Berkeley) 4/20/94 42 */ 43 44 #include "opt_ddb.h" 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/map.h> 50 #include <sys/proc.h> 51 #include <sys/buf.h> 52 #include <sys/reboot.h> 53 #include <sys/conf.h> 54 #include <sys/file.h> 55 #include <sys/clist.h> 56 #include <sys/device.h> 57 #include <sys/malloc.h> 58 #include <sys/mbuf.h> 59 #include <sys/msgbuf.h> 60 #include <sys/ioctl.h> 61 #include <sys/tty.h> 62 #include <sys/mount.h> 63 #include <sys/user.h> 64 #include <sys/exec.h> 65 #include <sys/core.h> 66 #include <sys/kcore.h> 67 #include <sys/vnode.h> 68 #include <sys/syscallargs.h> 69 #ifdef KGDB 70 #include <sys/kgdb.h> 71 #endif 72 73 #include <uvm/uvm_extern.h> 74 75 #include <sys/sysctl.h> 76 77 #include <dev/cons.h> 78 79 #include <machine/cpu.h> 80 #include <machine/dvma.h> 81 #include <machine/idprom.h> 82 #include <machine/kcore.h> 83 #include <machine/reg.h> 84 #include <machine/psl.h> 85 #include <machine/pte.h> 86 87 #if defined(DDB) 88 #include <machine/db_machdep.h> 89 #include <ddb/db_sym.h> 90 #include <ddb/db_extern.h> 91 #endif 92 93 #include <sun3/sun3/machdep.h> 94 95 /* Defined in locore.s */ 96 extern char kernel_text[]; 97 /* Defined by the linker */ 98 extern char etext[]; 99 100 /* Our exported CPU info; we can have only one. */ 101 struct cpu_info cpu_info_store; 102 103 vm_map_t exec_map = NULL; 104 vm_map_t mb_map = NULL; 105 vm_map_t phys_map = NULL; 106 107 int physmem; 108 int fputype; 109 caddr_t msgbufaddr; 110 111 /* Virtual page frame for /dev/mem (see mem.c) */ 112 vm_offset_t vmmap; 113 114 /* 115 * safepri is a safe priority for sleep to set for a spin-wait 116 * during autoconfiguration or after a panic. 117 */ 118 int safepri = PSL_LOWIPL; 119 120 u_char cpu_machine_id = 0; 121 char *cpu_string = NULL; 122 int cpu_has_vme = 0; 123 int has_iocache = 0; 124 125 static void identifycpu __P((void)); 126 static void initcpu __P((void)); 127 128 /* 129 * Console initialization: called early on from main, 130 * before vm init or cpu_startup. This system is able 131 * to use the console for output immediately (via PROM) 132 * but can not use it for input until after this point. 133 */ 134 void 135 consinit() 136 { 137 138 /* 139 * Switch from the PROM console (output only) 140 * to our own console driver. 141 */ 142 cninit(); 143 144 #ifdef DDB 145 { 146 extern int nsym; 147 extern char *ssym, *esym; 148 149 ddb_init(nsym, ssym, esym); 150 } 151 #endif DDB 152 153 /* 154 * Now that the console can do input as well as 155 * output, consider stopping for a debugger. 156 */ 157 if (boothowto & RB_KDB) { 158 #ifdef KGDB 159 /* XXX - Ask on console for kgdb_dev? */ 160 /* Note: this will just return if kgdb_dev==NODEV */ 161 kgdb_connect(1); 162 #else /* KGDB */ 163 /* Either DDB or no debugger (just PROM). */ 164 Debugger(); 165 #endif /* KGDB */ 166 } 167 } 168 169 /* 170 * cpu_startup: allocate memory for variable-sized tables, 171 * initialize cpu, and do autoconfiguration. 172 * 173 * This is called early in init_main.c:main(), after the 174 * kernel memory allocator is ready for use, but before 175 * the creation of processes 1,2, and mountroot, etc. 176 */ 177 void 178 cpu_startup() 179 { 180 caddr_t v; 181 int sz, i; 182 vm_size_t size; 183 int base, residual; 184 vm_offset_t minaddr, maxaddr; 185 char pbuf[9]; 186 187 /* 188 * Initialize message buffer (for kernel printf). 189 * This is put in physical page zero so it will 190 * always be in the same place after a reboot. 191 * Its mapping was prepared in pmap_bootstrap(). 192 * Also, offset some to avoid PROM scribbles. 193 */ 194 v = (caddr_t) KERNBASE; 195 msgbufaddr = (caddr_t)(v + MSGBUFOFF); 196 initmsgbuf(msgbufaddr, MSGBUFSIZE); 197 198 /* 199 * Good {morning,afternoon,evening,night}. 200 */ 201 printf(version); 202 identifycpu(); 203 initfpu(); /* also prints FPU type */ 204 205 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 206 printf("total memory = %s\n", pbuf); 207 208 /* 209 * Find out how much space we need, allocate it, 210 * and then give everything true virtual addresses. 211 */ 212 sz = (int)allocsys(NULL, NULL); 213 if ((v = (caddr_t)uvm_km_alloc(kernel_map, round_page(sz))) == 0) 214 panic("startup: no room for tables"); 215 if (allocsys(v, NULL) - v != sz) 216 panic("startup: table size inconsistency"); 217 218 /* 219 * Now allocate buffers proper. They are different than the above 220 * in that they usually occupy more virtual memory than physical. 221 */ 222 size = MAXBSIZE * nbuf; 223 if (uvm_map(kernel_map, (vm_offset_t *) &buffers, round_page(size), 224 NULL, UVM_UNKNOWN_OFFSET, 0, 225 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 226 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 227 panic("startup: cannot allocate VM for buffers"); 228 minaddr = (vm_offset_t)buffers; 229 if ((bufpages / nbuf) >= btoc(MAXBSIZE)) { 230 /* don't want to alloc more physical mem than needed */ 231 bufpages = btoc(MAXBSIZE) * nbuf; 232 } 233 base = bufpages / nbuf; 234 residual = bufpages % nbuf; 235 for (i = 0; i < nbuf; i++) { 236 vm_size_t curbufsize; 237 vm_offset_t curbuf; 238 struct vm_page *pg; 239 240 /* 241 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 242 * that MAXBSIZE space, we allocate and map (base+1) pages 243 * for the first "residual" buffers, and then we allocate 244 * "base" pages for the rest. 245 */ 246 curbuf = (vm_offset_t) buffers + (i * MAXBSIZE); 247 curbufsize = NBPG * ((i < residual) ? (base+1) : base); 248 249 while (curbufsize) { 250 pg = uvm_pagealloc(NULL, 0, NULL, 0); 251 if (pg == NULL) 252 panic("cpu_startup: not enough memory for " 253 "buffer cache"); 254 pmap_kenter_pa(curbuf, VM_PAGE_TO_PHYS(pg), 255 VM_PROT_READ|VM_PROT_WRITE); 256 curbuf += PAGE_SIZE; 257 curbufsize -= PAGE_SIZE; 258 } 259 } 260 261 /* 262 * Allocate a submap for exec arguments. This map effectively 263 * limits the number of processes exec'ing at any time. 264 */ 265 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 266 16*NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 267 268 /* 269 * We don't use a submap for physio, and use a separate map 270 * for DVMA allocations. Our vmapbuf just maps pages into 271 * the kernel map (any kernel mapping is OK) and then the 272 * device drivers clone the kernel mappings into DVMA space. 273 */ 274 275 /* 276 * Finally, allocate mbuf cluster submap. 277 */ 278 mb_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 279 nmbclusters * mclbytes, VM_MAP_INTRSAFE, 280 FALSE, NULL); 281 282 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 283 printf("avail memory = %s\n", pbuf); 284 format_bytes(pbuf, sizeof(pbuf), bufpages * NBPG); 285 printf("using %d buffers containing %s of memory\n", nbuf, pbuf); 286 287 /* 288 * Tell the VM system that writing to kernel text isn't allowed. 289 * If we don't, we might end up COW'ing the text segment! 290 */ 291 if (uvm_map_protect(kernel_map, (vm_offset_t) kernel_text, 292 m68k_trunc_page((vm_offset_t) etext), 293 UVM_PROT_READ|UVM_PROT_EXEC, TRUE) != KERN_SUCCESS) 294 panic("can't protect kernel text"); 295 296 /* 297 * Allocate a virtual page (for use by /dev/mem) 298 * This page is handed to pmap_enter() therefore 299 * it has to be in the normal kernel VA range. 300 */ 301 vmmap = uvm_km_valloc_wait(kernel_map, NBPG); 302 303 /* 304 * Create the DVMA maps. 305 */ 306 dvma_init(); 307 308 /* 309 * Set up CPU-specific registers, cache, etc. 310 */ 311 initcpu(); 312 313 /* 314 * Set up buffers, so they can be used to read disk labels. 315 */ 316 bufinit(); 317 } 318 319 /* 320 * Set registers on exec. 321 */ 322 void 323 setregs(p, pack, stack) 324 struct proc *p; 325 struct exec_package *pack; 326 u_long stack; 327 { 328 struct trapframe *tf = (struct trapframe *)p->p_md.md_regs; 329 330 tf->tf_sr = PSL_USERSET; 331 tf->tf_pc = pack->ep_entry & ~1; 332 tf->tf_regs[D0] = 0; 333 tf->tf_regs[D1] = 0; 334 tf->tf_regs[D2] = 0; 335 tf->tf_regs[D3] = 0; 336 tf->tf_regs[D4] = 0; 337 tf->tf_regs[D5] = 0; 338 tf->tf_regs[D6] = 0; 339 tf->tf_regs[D7] = 0; 340 tf->tf_regs[A0] = 0; 341 tf->tf_regs[A1] = 0; 342 tf->tf_regs[A2] = (int)PS_STRINGS; 343 tf->tf_regs[A3] = 0; 344 tf->tf_regs[A4] = 0; 345 tf->tf_regs[A5] = 0; 346 tf->tf_regs[A6] = 0; 347 tf->tf_regs[SP] = stack; 348 349 /* restore a null state frame */ 350 p->p_addr->u_pcb.pcb_fpregs.fpf_null = 0; 351 if (fputype) 352 m68881_restore(&p->p_addr->u_pcb.pcb_fpregs); 353 354 p->p_md.md_flags = 0; 355 } 356 357 /* 358 * Info for CTL_HW 359 */ 360 char machine[16] = MACHINE; /* from <machine/param.h> */ 361 char kernel_arch[16] = "sun3x"; /* XXX needs a sysctl node */ 362 char cpu_model[120]; 363 364 /* 365 * XXX - Should empirically estimate the divisor... 366 * Note that the value of delay_divisor is roughly 367 * 2048 / cpuclock (where cpuclock is in MHz). 368 */ 369 int delay_divisor = 62; /* assume the fastest (33 MHz) */ 370 371 void 372 identifycpu() 373 { 374 u_char machtype; 375 376 machtype = identity_prom.idp_machtype; 377 if ((machtype & IDM_ARCH_MASK) != IDM_ARCH_SUN3X) { 378 printf("Bad IDPROM arch!\n"); 379 sunmon_abort(); 380 } 381 382 cpu_machine_id = machtype; 383 switch (cpu_machine_id) { 384 385 case SUN3X_MACH_80: 386 cpu_string = "80"; /* Hydra */ 387 delay_divisor = 102; /* 20 MHz */ 388 cpu_has_vme = FALSE; 389 break; 390 391 case SUN3X_MACH_470: 392 cpu_string = "470"; /* Pegasus */ 393 delay_divisor = 62; /* 33 MHz */ 394 cpu_has_vme = TRUE; 395 break; 396 397 default: 398 printf("unknown sun3x model\n"); 399 sunmon_abort(); 400 } 401 402 /* Other stuff? (VAC, mc6888x version, etc.) */ 403 /* Note: miniroot cares about the kernel_arch part. */ 404 sprintf(cpu_model, "%s %s", kernel_arch, cpu_string); 405 406 printf("Model: %s\n", cpu_model); 407 } 408 409 /* 410 * machine dependent system variables. 411 */ 412 int 413 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 414 int *name; 415 u_int namelen; 416 void *oldp; 417 size_t *oldlenp; 418 void *newp; 419 size_t newlen; 420 struct proc *p; 421 { 422 int error; 423 dev_t consdev; 424 425 /* all sysctl names at this level are terminal */ 426 if (namelen != 1) 427 return (ENOTDIR); /* overloaded */ 428 429 switch (name[0]) { 430 case CPU_CONSDEV: 431 if (cn_tab != NULL) 432 consdev = cn_tab->cn_dev; 433 else 434 consdev = NODEV; 435 error = sysctl_rdstruct(oldp, oldlenp, newp, 436 &consdev, sizeof consdev); 437 break; 438 439 #if 0 /* XXX - Not yet... */ 440 case CPU_ROOT_DEVICE: 441 error = sysctl_rdstring(oldp, oldlenp, newp, root_device); 442 break; 443 444 case CPU_BOOTED_KERNEL: 445 error = sysctl_rdstring(oldp, oldlenp, newp, booted_kernel); 446 break; 447 #endif 448 449 default: 450 error = EOPNOTSUPP; 451 } 452 return (error); 453 } 454 455 /* See: sig_machdep.c */ 456 457 /* 458 * Do a sync in preparation for a reboot. 459 * XXX - This could probably be common code. 460 * XXX - And now, most of it is in vfs_shutdown() 461 * XXX - Put waittime checks in there too? 462 */ 463 int waittime = -1; /* XXX - Who else looks at this? -gwr */ 464 static void 465 reboot_sync __P((void)) 466 { 467 468 /* Check waittime here to localize its use to this function. */ 469 if (waittime >= 0) 470 return; 471 waittime = 0; 472 vfs_shutdown(); 473 } 474 475 /* 476 * Common part of the BSD and SunOS reboot system calls. 477 */ 478 __dead void 479 cpu_reboot(howto, user_boot_string) 480 int howto; 481 char *user_boot_string; 482 { 483 /* Note: this string MUST be static! */ 484 static char bootstr[128]; 485 char *p; 486 487 /* If system is cold, just halt. (early panic?) */ 488 if (cold) 489 goto haltsys; 490 491 /* Un-blank the screen if appropriate. */ 492 cnpollc(1); 493 494 if ((howto & RB_NOSYNC) == 0) { 495 reboot_sync(); 496 /* 497 * If we've been adjusting the clock, the todr 498 * will be out of synch; adjust it now. 499 * 500 * XXX - However, if the kernel has been sitting in ddb, 501 * the time will be way off, so don't set the HW clock! 502 * XXX - Should do sanity check against HW clock. -gwr 503 */ 504 /* resettodr(); */ 505 } 506 507 /* Disable interrupts. */ 508 splhigh(); 509 510 /* Write out a crash dump if asked. */ 511 if (howto & RB_DUMP) 512 dumpsys(); 513 514 /* run any shutdown hooks */ 515 doshutdownhooks(); 516 517 if (howto & RB_HALT) { 518 haltsys: 519 printf("halted.\n"); 520 sunmon_halt(); 521 } 522 523 /* 524 * Automatic reboot. 525 */ 526 if (user_boot_string) 527 strncpy(bootstr, user_boot_string, sizeof(bootstr)); 528 else { 529 /* 530 * Build our own boot string with an empty 531 * boot device/file and (maybe) some flags. 532 * The PROM will supply the device/file name. 533 */ 534 p = bootstr; 535 *p = '\0'; 536 if (howto & (RB_KDB|RB_ASKNAME|RB_SINGLE)) { 537 /* Append the boot flags. */ 538 *p++ = ' '; 539 *p++ = '-'; 540 if (howto & RB_KDB) 541 *p++ = 'd'; 542 if (howto & RB_ASKNAME) 543 *p++ = 'a'; 544 if (howto & RB_SINGLE) 545 *p++ = 's'; 546 *p = '\0'; 547 } 548 } 549 printf("rebooting...\n"); 550 sunmon_reboot(bootstr); 551 for (;;) ; 552 /*NOTREACHED*/ 553 } 554 555 /* 556 * These variables are needed by /sbin/savecore 557 */ 558 u_long dumpmag = 0x8fca0101; /* magic number */ 559 int dumpsize = 0; /* pages */ 560 long dumplo = 0; /* blocks */ 561 562 /* 563 * This is called by main to set dumplo, dumpsize. 564 * Dumps always skip the first NBPG of disk space 565 * in case there might be a disk label stored there. 566 * If there is extra space, put dump at the end to 567 * reduce the chance that swapping trashes it. 568 */ 569 void 570 cpu_dumpconf() 571 { 572 int nblks; /* size of dump area */ 573 int maj; 574 int (*getsize)__P((dev_t)); 575 576 /* Validate space in page zero for the kcore header. */ 577 if (MSGBUFOFF < (sizeof(kcore_seg_t) + sizeof(cpu_kcore_hdr_t))) 578 panic("cpu_dumpconf: MSGBUFOFF too small"); 579 580 if (dumpdev == NODEV) 581 return; 582 583 maj = major(dumpdev); 584 if (maj < 0 || maj >= nblkdev) 585 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 586 getsize = bdevsw[maj].d_psize; 587 if (getsize == NULL) 588 return; 589 nblks = (*getsize)(dumpdev); 590 if (nblks <= ctod(1)) 591 return; 592 593 /* Position dump image near end of space, page aligned. */ 594 dumpsize = physmem; /* pages */ 595 dumplo = nblks - ctod(dumpsize); 596 dumplo &= ~(ctod(1)-1); 597 598 /* If it does not fit, truncate it by moving dumplo. */ 599 /* Note: Must force signed comparison. */ 600 if (dumplo < ((long)ctod(1))) { 601 dumplo = ctod(1); 602 dumpsize = dtoc(nblks - dumplo); 603 } 604 } 605 606 /* Note: gdb looks for "dumppcb" in a kernel crash dump. */ 607 struct pcb dumppcb; 608 609 /* 610 * Write a crash dump. The format while in swap is: 611 * kcore_seg_t cpu_hdr; 612 * cpu_kcore_hdr_t cpu_data; 613 * padding (NBPG-sizeof(kcore_seg_t)) 614 * pagemap (2*NBPG) 615 * physical memory... 616 */ 617 void 618 dumpsys() 619 { 620 struct bdevsw *dsw; 621 kcore_seg_t *kseg_p; 622 cpu_kcore_hdr_t *chdr_p; 623 struct sun3x_kcore_hdr *sh; 624 phys_ram_seg_t *crs_p; 625 char *vaddr; 626 vm_offset_t paddr; 627 int psize, todo, seg, segsz; 628 daddr_t blkno; 629 int error = 0; 630 631 if (dumpdev == NODEV) 632 return; 633 634 /* 635 * For dumps during autoconfiguration, 636 * if dump device has already configured... 637 */ 638 if (dumpsize == 0) 639 cpu_dumpconf(); 640 if (dumplo <= 0) { 641 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 642 minor(dumpdev)); 643 return; 644 } 645 savectx(&dumppcb); 646 647 dsw = &bdevsw[major(dumpdev)]; 648 psize = (*(dsw->d_psize))(dumpdev); 649 if (psize == -1) { 650 printf("dump area unavailable\n"); 651 return; 652 } 653 654 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 655 minor(dumpdev), dumplo); 656 657 /* 658 * We put the dump header is in physical page zero, 659 * so there is no extra work here to write it out. 660 * All we do is initialize the header. 661 */ 662 663 /* Set pointers to all three parts. */ 664 kseg_p = (kcore_seg_t *)KERNBASE; 665 chdr_p = (cpu_kcore_hdr_t *) (kseg_p + 1); 666 sh = &chdr_p->un._sun3x; 667 668 /* Fill in kcore_seg_t part. */ 669 CORE_SETMAGIC(*kseg_p, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 670 kseg_p->c_size = sizeof(*chdr_p); 671 672 /* Fill in cpu_kcore_hdr_t part. */ 673 strncpy(chdr_p->name, kernel_arch, sizeof(chdr_p->name)); 674 chdr_p->page_size = NBPG; 675 chdr_p->kernbase = KERNBASE; 676 677 /* Fill in the sun3x_kcore_hdr part. */ 678 pmap_kcore_hdr(sh); 679 680 /* 681 * Now dump physical memory. Note that physical memory 682 * might NOT be congiguous, so do it by segments. 683 */ 684 685 blkno = dumplo; 686 todo = dumpsize; /* pages */ 687 vaddr = (char*)vmmap; /* Borrow /dev/mem VA */ 688 689 for (seg = 0; seg < SUN3X_NPHYS_RAM_SEGS; seg++) { 690 crs_p = &sh->ram_segs[seg]; 691 paddr = crs_p->start; 692 segsz = crs_p->size; 693 /* 694 * Our header lives in the first little bit of 695 * physical memory (not written separately), so 696 * we have to adjust the first ram segment size 697 * and start address to reflect the stolen RAM. 698 * (Nothing interesing in that RAM anyway 8^). 699 */ 700 if (seg == 0) { 701 int adj = sizeof(*kseg_p) + sizeof(*chdr_p); 702 crs_p->start += adj; 703 crs_p->size -= adj; 704 } 705 706 while (todo && (segsz > 0)) { 707 708 /* Print pages left after every 16. */ 709 if ((todo & 0xf) == 0) 710 printf("\r%4d", todo); 711 712 /* Make a temporary mapping for the page. */ 713 pmap_enter(pmap_kernel(), vmmap, paddr | PMAP_NC, 714 VM_PROT_READ, 0); 715 error = (*dsw->d_dump)(dumpdev, blkno, vaddr, NBPG); 716 pmap_remove(pmap_kernel(), vmmap, vmmap + NBPG); 717 if (error) 718 goto fail; 719 paddr += NBPG; 720 segsz -= NBPG; 721 blkno += btodb(NBPG); 722 todo--; 723 } 724 } 725 printf("\rdump succeeded\n"); 726 return; 727 fail: 728 printf(" dump error=%d\n", error); 729 } 730 731 static void 732 initcpu() 733 { 734 /* XXX: Enable RAM parity/ECC checking? */ 735 /* XXX: parityenable(); */ 736 737 #ifdef HAVECACHE 738 cache_enable(); 739 #endif 740 } 741 742 /* straptrap() in trap.c */ 743 744 /* from hp300: badaddr() */ 745 /* peek_byte(), peek_word() moved to bus_subr.c */ 746 747 /* XXX: parityenable() ? */ 748 /* regdump() moved to regdump.c */ 749 750 /* 751 * cpu_exec_aout_makecmds(): 752 * cpu-dependent a.out format hook for execve(). 753 * 754 * Determine if the given exec package refers to something which we 755 * understand and, if so, set up the vmcmds for it. 756 */ 757 int 758 cpu_exec_aout_makecmds(p, epp) 759 struct proc *p; 760 struct exec_package *epp; 761 { 762 return ENOEXEC; 763 } 764