machdep.c revision 1.60
1 /* $NetBSD: machdep.c,v 1.60 2000/09/13 15:00:23 thorpej 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 db_machine_init(); 146 { 147 extern int end[]; 148 extern char *esym; 149 150 /* symsize, symstart, symend */ 151 ddb_init(end[0], end + 1, (int*)esym); 152 } 153 #endif DDB 154 155 /* 156 * Now that the console can do input as well as 157 * output, consider stopping for a debugger. 158 */ 159 if (boothowto & RB_KDB) { 160 #ifdef KGDB 161 /* XXX - Ask on console for kgdb_dev? */ 162 /* Note: this will just return if kgdb_dev==NODEV */ 163 kgdb_connect(1); 164 #else /* KGDB */ 165 /* Either DDB or no debugger (just PROM). */ 166 Debugger(); 167 #endif /* KGDB */ 168 } 169 } 170 171 /* 172 * cpu_startup: allocate memory for variable-sized tables, 173 * initialize cpu, and do autoconfiguration. 174 * 175 * This is called early in init_main.c:main(), after the 176 * kernel memory allocator is ready for use, but before 177 * the creation of processes 1,2, and mountroot, etc. 178 */ 179 void 180 cpu_startup() 181 { 182 caddr_t v; 183 int sz, i; 184 vm_size_t size; 185 int base, residual; 186 vm_offset_t minaddr, maxaddr; 187 char pbuf[9]; 188 189 /* 190 * Initialize message buffer (for kernel printf). 191 * This is put in physical page zero so it will 192 * always be in the same place after a reboot. 193 * Its mapping was prepared in pmap_bootstrap(). 194 * Also, offset some to avoid PROM scribbles. 195 */ 196 v = (caddr_t) KERNBASE; 197 msgbufaddr = (caddr_t)(v + MSGBUFOFF); 198 initmsgbuf(msgbufaddr, MSGBUFSIZE); 199 200 /* 201 * Good {morning,afternoon,evening,night}. 202 */ 203 printf(version); 204 identifycpu(); 205 initfpu(); /* also prints FPU type */ 206 207 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 208 printf("total memory = %s\n", pbuf); 209 210 /* 211 * Find out how much space we need, allocate it, 212 * and then give everything true virtual addresses. 213 */ 214 sz = (int)allocsys(NULL, NULL); 215 if ((v = (caddr_t)uvm_km_alloc(kernel_map, round_page(sz))) == 0) 216 panic("startup: no room for tables"); 217 if (allocsys(v, NULL) - v != sz) 218 panic("startup: table size inconsistency"); 219 220 /* 221 * Now allocate buffers proper. They are different than the above 222 * in that they usually occupy more virtual memory than physical. 223 */ 224 size = MAXBSIZE * nbuf; 225 if (uvm_map(kernel_map, (vm_offset_t *) &buffers, round_page(size), 226 NULL, UVM_UNKNOWN_OFFSET, 0, 227 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 228 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 229 panic("startup: cannot allocate VM for buffers"); 230 minaddr = (vm_offset_t)buffers; 231 if ((bufpages / nbuf) >= btoc(MAXBSIZE)) { 232 /* don't want to alloc more physical mem than needed */ 233 bufpages = btoc(MAXBSIZE) * nbuf; 234 } 235 base = bufpages / nbuf; 236 residual = bufpages % nbuf; 237 for (i = 0; i < nbuf; i++) { 238 vm_size_t curbufsize; 239 vm_offset_t curbuf; 240 struct vm_page *pg; 241 242 /* 243 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 244 * that MAXBSIZE space, we allocate and map (base+1) pages 245 * for the first "residual" buffers, and then we allocate 246 * "base" pages for the rest. 247 */ 248 curbuf = (vm_offset_t) buffers + (i * MAXBSIZE); 249 curbufsize = NBPG * ((i < residual) ? (base+1) : base); 250 251 while (curbufsize) { 252 pg = uvm_pagealloc(NULL, 0, NULL, 0); 253 if (pg == NULL) 254 panic("cpu_startup: not enough memory for " 255 "buffer cache"); 256 pmap_kenter_pa(curbuf, VM_PAGE_TO_PHYS(pg), 257 VM_PROT_READ|VM_PROT_WRITE); 258 curbuf += PAGE_SIZE; 259 curbufsize -= PAGE_SIZE; 260 } 261 } 262 263 /* 264 * Allocate a submap for exec arguments. This map effectively 265 * limits the number of processes exec'ing at any time. 266 */ 267 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 268 16*NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 269 270 /* 271 * We don't use a submap for physio, and use a separate map 272 * for DVMA allocations. Our vmapbuf just maps pages into 273 * the kernel map (any kernel mapping is OK) and then the 274 * device drivers clone the kernel mappings into DVMA space. 275 */ 276 277 /* 278 * Finally, allocate mbuf cluster submap. 279 */ 280 mb_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 281 nmbclusters * mclbytes, VM_MAP_INTRSAFE, 282 FALSE, NULL); 283 284 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 285 printf("avail memory = %s\n", pbuf); 286 format_bytes(pbuf, sizeof(pbuf), bufpages * NBPG); 287 printf("using %d buffers containing %s of memory\n", nbuf, pbuf); 288 289 /* 290 * Tell the VM system that writing to kernel text isn't allowed. 291 * If we don't, we might end up COW'ing the text segment! 292 */ 293 if (uvm_map_protect(kernel_map, (vm_offset_t) kernel_text, 294 m68k_trunc_page((vm_offset_t) etext), 295 UVM_PROT_READ|UVM_PROT_EXEC, TRUE) != KERN_SUCCESS) 296 panic("can't protect kernel text"); 297 298 /* 299 * Allocate a virtual page (for use by /dev/mem) 300 * This page is handed to pmap_enter() therefore 301 * it has to be in the normal kernel VA range. 302 */ 303 vmmap = uvm_km_valloc_wait(kernel_map, NBPG); 304 305 /* 306 * Create the DVMA maps. 307 */ 308 dvma_init(); 309 310 /* 311 * Set up CPU-specific registers, cache, etc. 312 */ 313 initcpu(); 314 315 /* 316 * Set up buffers, so they can be used to read disk labels. 317 */ 318 bufinit(); 319 } 320 321 /* 322 * Set registers on exec. 323 */ 324 void 325 setregs(p, pack, stack) 326 struct proc *p; 327 struct exec_package *pack; 328 u_long stack; 329 { 330 struct trapframe *tf = (struct trapframe *)p->p_md.md_regs; 331 332 tf->tf_sr = PSL_USERSET; 333 tf->tf_pc = pack->ep_entry & ~1; 334 tf->tf_regs[D0] = 0; 335 tf->tf_regs[D1] = 0; 336 tf->tf_regs[D2] = 0; 337 tf->tf_regs[D3] = 0; 338 tf->tf_regs[D4] = 0; 339 tf->tf_regs[D5] = 0; 340 tf->tf_regs[D6] = 0; 341 tf->tf_regs[D7] = 0; 342 tf->tf_regs[A0] = 0; 343 tf->tf_regs[A1] = 0; 344 tf->tf_regs[A2] = (int)PS_STRINGS; 345 tf->tf_regs[A3] = 0; 346 tf->tf_regs[A4] = 0; 347 tf->tf_regs[A5] = 0; 348 tf->tf_regs[A6] = 0; 349 tf->tf_regs[SP] = stack; 350 351 /* restore a null state frame */ 352 p->p_addr->u_pcb.pcb_fpregs.fpf_null = 0; 353 if (fputype) 354 m68881_restore(&p->p_addr->u_pcb.pcb_fpregs); 355 356 p->p_md.md_flags = 0; 357 } 358 359 /* 360 * Info for CTL_HW 361 */ 362 char machine[16] = MACHINE; /* from <machine/param.h> */ 363 char kernel_arch[16] = "sun3x"; /* XXX needs a sysctl node */ 364 char cpu_model[120]; 365 366 /* 367 * XXX - Should empirically estimate the divisor... 368 * Note that the value of delay_divisor is roughly 369 * 2048 / cpuclock (where cpuclock is in MHz). 370 */ 371 int delay_divisor = 62; /* assume the fastest (33 MHz) */ 372 373 void 374 identifycpu() 375 { 376 u_char machtype; 377 378 machtype = identity_prom.idp_machtype; 379 if ((machtype & IDM_ARCH_MASK) != IDM_ARCH_SUN3X) { 380 printf("Bad IDPROM arch!\n"); 381 sunmon_abort(); 382 } 383 384 cpu_machine_id = machtype; 385 switch (cpu_machine_id) { 386 387 case SUN3X_MACH_80: 388 cpu_string = "80"; /* Hydra */ 389 delay_divisor = 102; /* 20 MHz */ 390 cpu_has_vme = FALSE; 391 break; 392 393 case SUN3X_MACH_470: 394 cpu_string = "470"; /* Pegasus */ 395 delay_divisor = 62; /* 33 MHz */ 396 cpu_has_vme = TRUE; 397 break; 398 399 default: 400 printf("unknown sun3x model\n"); 401 sunmon_abort(); 402 } 403 404 /* Other stuff? (VAC, mc6888x version, etc.) */ 405 /* Note: miniroot cares about the kernel_arch part. */ 406 sprintf(cpu_model, "%s %s", kernel_arch, cpu_string); 407 408 printf("Model: %s\n", cpu_model); 409 } 410 411 /* 412 * machine dependent system variables. 413 */ 414 int 415 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 416 int *name; 417 u_int namelen; 418 void *oldp; 419 size_t *oldlenp; 420 void *newp; 421 size_t newlen; 422 struct proc *p; 423 { 424 int error; 425 dev_t consdev; 426 427 /* all sysctl names at this level are terminal */ 428 if (namelen != 1) 429 return (ENOTDIR); /* overloaded */ 430 431 switch (name[0]) { 432 case CPU_CONSDEV: 433 if (cn_tab != NULL) 434 consdev = cn_tab->cn_dev; 435 else 436 consdev = NODEV; 437 error = sysctl_rdstruct(oldp, oldlenp, newp, 438 &consdev, sizeof consdev); 439 break; 440 441 #if 0 /* XXX - Not yet... */ 442 case CPU_ROOT_DEVICE: 443 error = sysctl_rdstring(oldp, oldlenp, newp, root_device); 444 break; 445 446 case CPU_BOOTED_KERNEL: 447 error = sysctl_rdstring(oldp, oldlenp, newp, booted_kernel); 448 break; 449 #endif 450 451 default: 452 error = EOPNOTSUPP; 453 } 454 return (error); 455 } 456 457 /* See: sig_machdep.c */ 458 459 /* 460 * Do a sync in preparation for a reboot. 461 * XXX - This could probably be common code. 462 * XXX - And now, most of it is in vfs_shutdown() 463 * XXX - Put waittime checks in there too? 464 */ 465 int waittime = -1; /* XXX - Who else looks at this? -gwr */ 466 static void 467 reboot_sync __P((void)) 468 { 469 470 /* Check waittime here to localize its use to this function. */ 471 if (waittime >= 0) 472 return; 473 waittime = 0; 474 vfs_shutdown(); 475 } 476 477 /* 478 * Common part of the BSD and SunOS reboot system calls. 479 */ 480 __dead void 481 cpu_reboot(howto, user_boot_string) 482 int howto; 483 char *user_boot_string; 484 { 485 /* Note: this string MUST be static! */ 486 static char bootstr[128]; 487 char *p; 488 489 /* If system is cold, just halt. (early panic?) */ 490 if (cold) 491 goto haltsys; 492 493 /* Un-blank the screen if appropriate. */ 494 cnpollc(1); 495 496 if ((howto & RB_NOSYNC) == 0) { 497 reboot_sync(); 498 /* 499 * If we've been adjusting the clock, the todr 500 * will be out of synch; adjust it now. 501 * 502 * XXX - However, if the kernel has been sitting in ddb, 503 * the time will be way off, so don't set the HW clock! 504 * XXX - Should do sanity check against HW clock. -gwr 505 */ 506 /* resettodr(); */ 507 } 508 509 /* Disable interrupts. */ 510 splhigh(); 511 512 /* Write out a crash dump if asked. */ 513 if (howto & RB_DUMP) 514 dumpsys(); 515 516 /* run any shutdown hooks */ 517 doshutdownhooks(); 518 519 if (howto & RB_HALT) { 520 haltsys: 521 printf("Kernel halted.\n"); 522 #if 0 523 /* 524 * This calls the PROM monitor "exit_to_mon" function 525 * which appears to have problems... SunOS uses the 526 * "abort" function when you halt (bug work-around?) 527 * so we might as well do the same. 528 */ 529 sunmon_halt(); /* provokes PROM monitor bug */ 530 #else 531 sunmon_abort(); 532 #endif 533 } 534 535 /* 536 * Automatic reboot. 537 */ 538 if (user_boot_string) 539 strncpy(bootstr, user_boot_string, sizeof(bootstr)); 540 else { 541 /* 542 * Build our own boot string with an empty 543 * boot device/file and (maybe) some flags. 544 * The PROM will supply the device/file name. 545 */ 546 p = bootstr; 547 *p = '\0'; 548 if (howto & (RB_KDB|RB_ASKNAME|RB_SINGLE)) { 549 /* Append the boot flags. */ 550 *p++ = ' '; 551 *p++ = '-'; 552 if (howto & RB_KDB) 553 *p++ = 'd'; 554 if (howto & RB_ASKNAME) 555 *p++ = 'a'; 556 if (howto & RB_SINGLE) 557 *p++ = 's'; 558 *p = '\0'; 559 } 560 } 561 printf("Kernel rebooting...\n"); 562 sunmon_reboot(bootstr); 563 for (;;) ; 564 /*NOTREACHED*/ 565 } 566 567 /* 568 * These variables are needed by /sbin/savecore 569 */ 570 u_long dumpmag = 0x8fca0101; /* magic number */ 571 int dumpsize = 0; /* pages */ 572 long dumplo = 0; /* blocks */ 573 574 /* 575 * This is called by main to set dumplo, dumpsize. 576 * Dumps always skip the first NBPG of disk space 577 * in case there might be a disk label stored there. 578 * If there is extra space, put dump at the end to 579 * reduce the chance that swapping trashes it. 580 */ 581 void 582 cpu_dumpconf() 583 { 584 int nblks; /* size of dump area */ 585 int maj; 586 int (*getsize)__P((dev_t)); 587 588 /* Validate space in page zero for the kcore header. */ 589 if (MSGBUFOFF < (sizeof(kcore_seg_t) + sizeof(cpu_kcore_hdr_t))) 590 panic("cpu_dumpconf: MSGBUFOFF too small"); 591 592 if (dumpdev == NODEV) 593 return; 594 595 maj = major(dumpdev); 596 if (maj < 0 || maj >= nblkdev) 597 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 598 getsize = bdevsw[maj].d_psize; 599 if (getsize == NULL) 600 return; 601 nblks = (*getsize)(dumpdev); 602 if (nblks <= ctod(1)) 603 return; 604 605 /* Position dump image near end of space, page aligned. */ 606 dumpsize = physmem; /* pages */ 607 dumplo = nblks - ctod(dumpsize); 608 dumplo &= ~(ctod(1)-1); 609 610 /* If it does not fit, truncate it by moving dumplo. */ 611 /* Note: Must force signed comparison. */ 612 if (dumplo < ((long)ctod(1))) { 613 dumplo = ctod(1); 614 dumpsize = dtoc(nblks - dumplo); 615 } 616 } 617 618 /* Note: gdb looks for "dumppcb" in a kernel crash dump. */ 619 struct pcb dumppcb; 620 621 /* 622 * Write a crash dump. The format while in swap is: 623 * kcore_seg_t cpu_hdr; 624 * cpu_kcore_hdr_t cpu_data; 625 * padding (NBPG-sizeof(kcore_seg_t)) 626 * pagemap (2*NBPG) 627 * physical memory... 628 */ 629 void 630 dumpsys() 631 { 632 struct bdevsw *dsw; 633 kcore_seg_t *kseg_p; 634 cpu_kcore_hdr_t *chdr_p; 635 struct sun3x_kcore_hdr *sh; 636 phys_ram_seg_t *crs_p; 637 char *vaddr; 638 vm_offset_t paddr; 639 int psize, todo, seg, segsz; 640 daddr_t blkno; 641 int error = 0; 642 643 if (dumpdev == NODEV) 644 return; 645 646 /* 647 * For dumps during autoconfiguration, 648 * if dump device has already configured... 649 */ 650 if (dumpsize == 0) 651 cpu_dumpconf(); 652 if (dumplo <= 0) { 653 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 654 minor(dumpdev)); 655 return; 656 } 657 savectx(&dumppcb); 658 659 dsw = &bdevsw[major(dumpdev)]; 660 psize = (*(dsw->d_psize))(dumpdev); 661 if (psize == -1) { 662 printf("dump area unavailable\n"); 663 return; 664 } 665 666 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 667 minor(dumpdev), dumplo); 668 669 /* 670 * We put the dump header is in physical page zero, 671 * so there is no extra work here to write it out. 672 * All we do is initialize the header. 673 */ 674 675 /* Set pointers to all three parts. */ 676 kseg_p = (kcore_seg_t *)KERNBASE; 677 chdr_p = (cpu_kcore_hdr_t *) (kseg_p + 1); 678 sh = &chdr_p->un._sun3x; 679 680 /* Fill in kcore_seg_t part. */ 681 CORE_SETMAGIC(*kseg_p, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 682 kseg_p->c_size = sizeof(*chdr_p); 683 684 /* Fill in cpu_kcore_hdr_t part. */ 685 strncpy(chdr_p->name, kernel_arch, sizeof(chdr_p->name)); 686 chdr_p->page_size = NBPG; 687 chdr_p->kernbase = KERNBASE; 688 689 /* Fill in the sun3x_kcore_hdr part. */ 690 pmap_kcore_hdr(sh); 691 692 /* 693 * Now dump physical memory. Note that physical memory 694 * might NOT be congiguous, so do it by segments. 695 */ 696 697 blkno = dumplo; 698 todo = dumpsize; /* pages */ 699 vaddr = (char*)vmmap; /* Borrow /dev/mem VA */ 700 701 for (seg = 0; seg < SUN3X_NPHYS_RAM_SEGS; seg++) { 702 crs_p = &sh->ram_segs[seg]; 703 paddr = crs_p->start; 704 segsz = crs_p->size; 705 /* 706 * Our header lives in the first little bit of 707 * physical memory (not written separately), so 708 * we have to adjust the first ram segment size 709 * and start address to reflect the stolen RAM. 710 * (Nothing interesing in that RAM anyway 8^). 711 */ 712 if (seg == 0) { 713 int adj = sizeof(*kseg_p) + sizeof(*chdr_p); 714 crs_p->start += adj; 715 crs_p->size -= adj; 716 } 717 718 while (todo && (segsz > 0)) { 719 720 /* Print pages left after every 16. */ 721 if ((todo & 0xf) == 0) 722 printf("\r%4d", todo); 723 724 /* Make a temporary mapping for the page. */ 725 pmap_enter(pmap_kernel(), vmmap, paddr | PMAP_NC, 726 VM_PROT_READ, 0); 727 error = (*dsw->d_dump)(dumpdev, blkno, vaddr, NBPG); 728 pmap_remove(pmap_kernel(), vmmap, vmmap + NBPG); 729 if (error) 730 goto fail; 731 paddr += NBPG; 732 segsz -= NBPG; 733 blkno += btodb(NBPG); 734 todo--; 735 } 736 } 737 printf("\rdump succeeded\n"); 738 return; 739 fail: 740 printf(" dump error=%d\n", error); 741 } 742 743 static void 744 initcpu() 745 { 746 /* XXX: Enable RAM parity/ECC checking? */ 747 /* XXX: parityenable(); */ 748 749 #ifdef HAVECACHE 750 cache_enable(); 751 #endif 752 } 753 754 /* straptrap() in trap.c */ 755 756 /* from hp300: badaddr() */ 757 /* peek_byte(), peek_word() moved to bus_subr.c */ 758 759 /* XXX: parityenable() ? */ 760 /* regdump() moved to regdump.c */ 761 762 /* 763 * cpu_exec_aout_makecmds(): 764 * cpu-dependent a.out format hook for execve(). 765 * 766 * Determine if the given exec package refers to something which we 767 * understand and, if so, set up the vmcmds for it. 768 */ 769 int 770 cpu_exec_aout_makecmds(p, epp) 771 struct proc *p; 772 struct exec_package *epp; 773 { 774 return ENOEXEC; 775 } 776
Indexes created Mon Sep 29 21:09:56 GMT 2025