machdep.c revision 1.96
1 /* $NetBSD: machdep.c,v 1.96 2004/03/24 15:34:51 atatat Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * the Systems Programming Group of the University of Utah Computer 9 * Science Department. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: Utah Hdr: machdep.c 1.74 92/12/20 36 * from: @(#)machdep.c 8.10 (Berkeley) 4/20/94 37 */ 38 /* 39 * Copyright (c) 1988 University of Utah. 40 * 41 * This code is derived from software contributed to Berkeley by 42 * the Systems Programming Group of the University of Utah Computer 43 * Science Department. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. Redistributions in binary form must reproduce the above copyright 51 * notice, this list of conditions and the following disclaimer in the 52 * documentation and/or other materials provided with the distribution. 53 * 3. All advertising materials mentioning features or use of this software 54 * must display the following acknowledgement: 55 * This product includes software developed by the University of 56 * California, Berkeley and its contributors. 57 * 4. Neither the name of the University nor the names of its contributors 58 * may be used to endorse or promote products derived from this software 59 * without specific prior written permission. 60 * 61 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 62 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 63 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 64 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 65 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 66 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 67 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 68 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 69 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 70 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 71 * SUCH DAMAGE. 72 * 73 * from: Utah Hdr: machdep.c 1.74 92/12/20 74 * from: @(#)machdep.c 8.10 (Berkeley) 4/20/94 75 */ 76 77 #include <sys/cdefs.h> 78 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.96 2004/03/24 15:34:51 atatat Exp $"); 79 80 #include "opt_ddb.h" 81 #include "opt_kgdb.h" 82 83 #include <sys/param.h> 84 #include <sys/systm.h> 85 #include <sys/kernel.h> 86 #include <sys/proc.h> 87 #include <sys/buf.h> 88 #include <sys/reboot.h> 89 #include <sys/conf.h> 90 #include <sys/file.h> 91 #include <sys/device.h> 92 #include <sys/malloc.h> 93 #include <sys/mbuf.h> 94 #include <sys/msgbuf.h> 95 #include <sys/ioctl.h> 96 #include <sys/tty.h> 97 #include <sys/mount.h> 98 #include <sys/user.h> 99 #include <sys/exec.h> 100 #include <sys/core.h> 101 #include <sys/kcore.h> 102 #include <sys/vnode.h> 103 #include <sys/sa.h> 104 #include <sys/syscallargs.h> 105 #include <sys/ksyms.h> 106 #ifdef KGDB 107 #include <sys/kgdb.h> 108 #endif 109 110 #include <uvm/uvm_extern.h> 111 112 #include <sys/sysctl.h> 113 114 #include <dev/cons.h> 115 116 #include <machine/cpu.h> 117 #include <machine/dvma.h> 118 #include <machine/idprom.h> 119 #include <machine/kcore.h> 120 #include <machine/reg.h> 121 #include <machine/psl.h> 122 #include <machine/pte.h> 123 124 #if defined(DDB) 125 #include <machine/db_machdep.h> 126 #include <ddb/db_sym.h> 127 #include <ddb/db_extern.h> 128 #endif 129 130 #include <sun3/sun3/machdep.h> 131 132 #include "ksyms.h" 133 134 /* Defined in locore.s */ 135 extern char kernel_text[]; 136 /* Defined by the linker */ 137 extern char etext[]; 138 139 /* Our exported CPU info; we can have only one. */ 140 struct cpu_info cpu_info_store; 141 142 struct vm_map *exec_map = NULL; 143 struct vm_map *mb_map = NULL; 144 struct vm_map *phys_map = NULL; 145 146 int physmem; 147 int fputype; 148 caddr_t msgbufaddr; 149 150 /* Virtual page frame for /dev/mem (see mem.c) */ 151 vaddr_t vmmap; 152 153 union sun3sir sun3sir; 154 155 /* 156 * safepri is a safe priority for sleep to set for a spin-wait 157 * during autoconfiguration or after a panic. 158 */ 159 int safepri = PSL_LOWIPL; 160 161 u_char cpu_machine_id = 0; 162 char *cpu_string = NULL; 163 int cpu_has_vme = 0; 164 int has_iocache = 0; 165 166 vaddr_t dumppage; 167 168 static void identifycpu __P((void)); 169 static void initcpu __P((void)); 170 171 /* 172 * Console initialization: called early on from main, 173 * before vm init or cpu_startup. This system is able 174 * to use the console for output immediately (via PROM) 175 * but can not use it for input until after this point. 176 */ 177 void 178 consinit() 179 { 180 181 /* 182 * Switch from the PROM console (output only) 183 * to our own console driver. 184 */ 185 cninit(); 186 187 #if NKSYMS || defined(DDB) || defined(LKM) 188 { 189 extern int nsym; 190 extern char *ssym, *esym; 191 192 ksyms_init(nsym, ssym, esym); 193 } 194 #endif /* DDB */ 195 196 /* 197 * Now that the console can do input as well as 198 * output, consider stopping for a debugger. 199 */ 200 if (boothowto & RB_KDB) { 201 #ifdef KGDB 202 /* XXX - Ask on console for kgdb_dev? */ 203 /* Note: this will just return if kgdb_dev==NODEV */ 204 kgdb_connect(1); 205 #else /* KGDB */ 206 /* Either DDB or no debugger (just PROM). */ 207 Debugger(); 208 #endif /* KGDB */ 209 } 210 } 211 212 /* 213 * cpu_startup: allocate memory for variable-sized tables, 214 * initialize CPU, and do autoconfiguration. 215 * 216 * This is called early in init_main.c:main(), after the 217 * kernel memory allocator is ready for use, but before 218 * the creation of processes 1,2, and mountroot, etc. 219 */ 220 void 221 cpu_startup() 222 { 223 caddr_t v; 224 vaddr_t minaddr, maxaddr; 225 char pbuf[9]; 226 227 if (fputype != FPU_NONE) 228 m68k_make_fpu_idle_frame(); 229 230 /* 231 * Initialize message buffer (for kernel printf). 232 * This is put in physical page zero so it will 233 * always be in the same place after a reboot. 234 * Its mapping was prepared in pmap_bootstrap(). 235 * Also, offset some to avoid PROM scribbles. 236 */ 237 v = (caddr_t) KERNBASE; 238 msgbufaddr = (caddr_t)(v + MSGBUFOFF); 239 initmsgbuf(msgbufaddr, MSGBUFSIZE); 240 241 /* 242 * Good {morning,afternoon,evening,night}. 243 */ 244 printf(version); 245 identifycpu(); 246 initfpu(); /* also prints FPU type */ 247 248 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 249 printf("total memory = %s\n", pbuf); 250 251 /* 252 * Get scratch page for dumpsys(). 253 */ 254 if ((dumppage = uvm_km_alloc(kernel_map, PAGE_SIZE)) == 0) 255 panic("startup: alloc dumppage"); 256 257 minaddr = 0; 258 /* 259 * Allocate a submap for exec arguments. This map effectively 260 * limits the number of processes exec'ing at any time. 261 */ 262 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 263 16*NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 264 265 /* 266 * Allocate a submap for physio 267 */ 268 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 269 VM_PHYS_SIZE, 0, FALSE, NULL); 270 271 /* 272 * Finally, allocate mbuf cluster submap. 273 */ 274 mb_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 275 nmbclusters * mclbytes, VM_MAP_INTRSAFE, 276 FALSE, NULL); 277 278 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 279 printf("avail memory = %s\n", pbuf); 280 281 /* 282 * Allocate a virtual page (for use by /dev/mem) 283 * This page is handed to pmap_enter() therefore 284 * it has to be in the normal kernel VA range. 285 */ 286 vmmap = uvm_km_valloc_wait(kernel_map, PAGE_SIZE); 287 288 /* 289 * Create the DVMA maps. 290 */ 291 dvma_init(); 292 293 /* 294 * Set up CPU-specific registers, cache, etc. 295 */ 296 initcpu(); 297 } 298 299 /* 300 * Set registers on exec. 301 */ 302 void 303 setregs(l, pack, stack) 304 struct lwp *l; 305 struct exec_package *pack; 306 u_long stack; 307 { 308 struct trapframe *tf = (struct trapframe *)l->l_md.md_regs; 309 310 tf->tf_sr = PSL_USERSET; 311 tf->tf_pc = pack->ep_entry & ~1; 312 tf->tf_regs[D0] = 0; 313 tf->tf_regs[D1] = 0; 314 tf->tf_regs[D2] = 0; 315 tf->tf_regs[D3] = 0; 316 tf->tf_regs[D4] = 0; 317 tf->tf_regs[D5] = 0; 318 tf->tf_regs[D6] = 0; 319 tf->tf_regs[D7] = 0; 320 tf->tf_regs[A0] = 0; 321 tf->tf_regs[A1] = 0; 322 tf->tf_regs[A2] = (int)l->l_proc->p_psstr; 323 tf->tf_regs[A3] = 0; 324 tf->tf_regs[A4] = 0; 325 tf->tf_regs[A5] = 0; 326 tf->tf_regs[A6] = 0; 327 tf->tf_regs[SP] = stack; 328 329 /* restore a null state frame */ 330 l->l_addr->u_pcb.pcb_fpregs.fpf_null = 0; 331 if (fputype) 332 m68881_restore(&l->l_addr->u_pcb.pcb_fpregs); 333 334 l->l_md.md_flags = 0; 335 } 336 337 /* 338 * Info for CTL_HW 339 */ 340 char machine[16] = MACHINE; /* from <machine/param.h> */ 341 char kernel_arch[16] = "sun3x"; /* XXX needs a sysctl node */ 342 char cpu_model[120]; 343 344 /* 345 * XXX - Should empirically estimate the divisor... 346 * Note that the value of delay_divisor is roughly 347 * 2048 / cpuclock (where cpuclock is in MHz). 348 */ 349 int delay_divisor = 62; /* assume the fastest (33 MHz) */ 350 351 void 352 identifycpu() 353 { 354 u_char machtype; 355 356 machtype = identity_prom.idp_machtype; 357 if ((machtype & IDM_ARCH_MASK) != IDM_ARCH_SUN3X) { 358 printf("Bad IDPROM arch!\n"); 359 sunmon_abort(); 360 } 361 362 cpu_machine_id = machtype; 363 switch (cpu_machine_id) { 364 365 case SUN3X_MACH_80: 366 cpu_string = "80"; /* Hydra */ 367 delay_divisor = 102; /* 20 MHz */ 368 cpu_has_vme = FALSE; 369 break; 370 371 case SUN3X_MACH_470: 372 cpu_string = "470"; /* Pegasus */ 373 delay_divisor = 62; /* 33 MHz */ 374 cpu_has_vme = TRUE; 375 break; 376 377 default: 378 printf("unknown sun3x model\n"); 379 sunmon_abort(); 380 } 381 382 /* Other stuff? (VAC, mc6888x version, etc.) */ 383 /* Note: miniroot cares about the kernel_arch part. */ 384 sprintf(cpu_model, "%s %s", kernel_arch, cpu_string); 385 386 printf("Model: %s\n", cpu_model); 387 } 388 389 /* 390 * machine dependent system variables. 391 */ 392 #if 0 /* XXX - Not yet... */ 393 static int 394 sysctl_machdep_root_device(SYSCTLFN_ARGS) 395 { 396 struct sysctlnode node = *rnode; 397 398 node.sysctl_data = some permutation on root_device; 399 node.sysctl_size = strlen(root_device) + 1; 400 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 401 } 402 403 static int 404 sysctl_machdep_booted_kernel(SYSCTLFN_ARGS) 405 { 406 struct sysctlnode node = *rnode; 407 408 node.sysctl_data = some permutation on booted_kernel; 409 node.sysctl_size = strlen(booted_kernel) + 1; 410 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 411 } 412 #endif 413 414 SYSCTL_SETUP(sysctl_machdep_setup, "sysctl machdep subtree setup") 415 { 416 417 sysctl_createv(clog, 0, NULL, NULL, 418 CTLFLAG_PERMANENT, 419 CTLTYPE_NODE, "machdep", NULL, 420 NULL, 0, NULL, 0, 421 CTL_MACHDEP, CTL_EOL); 422 423 sysctl_createv(clog, 0, NULL, NULL, 424 CTLFLAG_PERMANENT, 425 CTLTYPE_STRUCT, "console_device", NULL, 426 sysctl_consdev, 0, NULL, sizeof(dev_t), 427 CTL_MACHDEP, CPU_CONSDEV, CTL_EOL); 428 #if 0 /* XXX - Not yet... */ 429 sysctl_createv(clog, 0, NULL, NULL, 430 CTLFLAG_PERMANENT, 431 CTLTYPE_STRING, "root_device", NULL, 432 sysctl_machdep_root_device, 0, NULL, 0, 433 CTL_MACHDEP, CPU_ROOT_DEVICE, CTL_EOL); 434 sysctl_createv(clog, 0, NULL, NULL, 435 CTLFLAG_PERMANENT, 436 CTLTYPE_STRING, "booted_kernel", NULL, 437 sysctl_machdep_booted_kernel, 0, NULL, 0, 438 CTL_MACHDEP, CPU_BOOTED_KERNEL, CTL_EOL); 439 #endif 440 } 441 442 /* See: sig_machdep.c */ 443 444 /* 445 * Do a sync in preparation for a reboot. 446 * XXX - This could probably be common code. 447 * XXX - And now, most of it is in vfs_shutdown() 448 * XXX - Put waittime checks in there too? 449 */ 450 int waittime = -1; /* XXX - Who else looks at this? -gwr */ 451 static void 452 reboot_sync __P((void)) 453 { 454 455 /* Check waittime here to localize its use to this function. */ 456 if (waittime >= 0) 457 return; 458 waittime = 0; 459 vfs_shutdown(); 460 } 461 462 /* 463 * Common part of the BSD and SunOS reboot system calls. 464 */ 465 __dead void 466 cpu_reboot(howto, user_boot_string) 467 int howto; 468 char *user_boot_string; 469 { 470 /* Note: this string MUST be static! */ 471 static char bootstr[128]; 472 char *p; 473 474 /* If system is cold, just halt. (early panic?) */ 475 if (cold) 476 goto haltsys; 477 478 /* Un-blank the screen if appropriate. */ 479 cnpollc(1); 480 481 if ((howto & RB_NOSYNC) == 0) { 482 reboot_sync(); 483 /* 484 * If we've been adjusting the clock, the todr 485 * will be out of synch; adjust it now. 486 * 487 * XXX - However, if the kernel has been sitting in ddb, 488 * the time will be way off, so don't set the HW clock! 489 * XXX - Should do sanity check against HW clock. -gwr 490 */ 491 /* resettodr(); */ 492 } 493 494 /* Disable interrupts. */ 495 splhigh(); 496 497 /* Write out a crash dump if asked. */ 498 if (howto & RB_DUMP) 499 dumpsys(); 500 501 /* run any shutdown hooks */ 502 doshutdownhooks(); 503 504 if (howto & RB_HALT) { 505 haltsys: 506 printf("halted.\n"); 507 sunmon_halt(); 508 } 509 510 /* 511 * Automatic reboot. 512 */ 513 if (user_boot_string) 514 strncpy(bootstr, user_boot_string, sizeof(bootstr)); 515 else { 516 /* 517 * Build our own boot string with an empty 518 * boot device/file and (maybe) some flags. 519 * The PROM will supply the device/file name. 520 */ 521 p = bootstr; 522 *p = '\0'; 523 if (howto & (RB_KDB|RB_ASKNAME|RB_SINGLE)) { 524 /* Append the boot flags. */ 525 *p++ = ' '; 526 *p++ = '-'; 527 if (howto & RB_KDB) 528 *p++ = 'd'; 529 if (howto & RB_ASKNAME) 530 *p++ = 'a'; 531 if (howto & RB_SINGLE) 532 *p++ = 's'; 533 *p = '\0'; 534 } 535 } 536 printf("rebooting...\n"); 537 sunmon_reboot(bootstr); 538 for (;;) ; 539 /*NOTREACHED*/ 540 } 541 542 /* 543 * These variables are needed by /sbin/savecore 544 */ 545 u_int32_t dumpmag = 0x8fca0101; /* magic number */ 546 int dumpsize = 0; /* pages */ 547 long dumplo = 0; /* blocks */ 548 549 #define DUMP_EXTRA 1 /* CPU-dependent extra pages */ 550 551 /* 552 * This is called by main to set dumplo, dumpsize. 553 * Dumps always skip the first PAGE_SIZE of disk space 554 * in case there might be a disk label stored there. 555 * If there is extra space, put dump at the end to 556 * reduce the chance that swapping trashes it. 557 */ 558 void 559 cpu_dumpconf() 560 { 561 const struct bdevsw *bdev; 562 int devblks; /* size of dump device in blocks */ 563 int dumpblks; /* size of dump image in blocks */ 564 int (*getsize)__P((dev_t)); 565 566 if (dumpdev == NODEV) 567 return; 568 569 bdev = bdevsw_lookup(dumpdev); 570 if (bdev == NULL) 571 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 572 getsize = bdev->d_psize; 573 if (getsize == NULL) 574 return; 575 devblks = (*getsize)(dumpdev); 576 if (devblks <= ctod(1)) 577 return; 578 devblks &= ~(ctod(1) - 1); 579 580 /* 581 * Note: savecore expects dumpsize to be the 582 * number of pages AFTER the dump header. 583 */ 584 dumpsize = physmem; /* pages */ 585 586 /* Position dump image near end of space, page aligned. */ 587 dumpblks = ctod(physmem + DUMP_EXTRA); 588 dumplo = devblks - dumpblks; 589 590 /* If it does not fit, truncate it by moving dumplo. */ 591 /* Note: Must force signed comparison. */ 592 if (dumplo < ((long)ctod(1))) { 593 dumplo = ctod(1); 594 dumpsize = dtoc(devblks - dumplo) - DUMP_EXTRA; 595 } 596 } 597 598 /* Note: gdb looks for "dumppcb" in a kernel crash dump. */ 599 struct pcb dumppcb; 600 601 /* 602 * Write a crash dump. The format while in swap is: 603 * kcore_seg_t cpu_hdr; 604 * cpu_kcore_hdr_t cpu_data; 605 * padding (PAGE_SIZE-sizeof(kcore_seg_t)) 606 * pagemap (2*PAGE_SIZE) 607 * physical memory... 608 */ 609 void 610 dumpsys() 611 { 612 const struct bdevsw *dsw; 613 kcore_seg_t *kseg_p; 614 cpu_kcore_hdr_t *chdr_p; 615 struct sun3x_kcore_hdr *sh; 616 phys_ram_seg_t *crs_p; 617 char *vaddr; 618 paddr_t paddr; 619 int psize, todo, seg, segsz; 620 daddr_t blkno; 621 int error = 0; 622 623 if (dumpdev == NODEV) 624 return; 625 dsw = bdevsw_lookup(dumpdev); 626 if (dsw == NULL || dsw->d_psize == NULL) 627 return; 628 629 /* 630 * For dumps during autoconfiguration, 631 * if dump device has already configured... 632 */ 633 if (dumpsize == 0) 634 cpu_dumpconf(); 635 if (dumplo <= 0) { 636 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 637 minor(dumpdev)); 638 return; 639 } 640 savectx(&dumppcb); 641 642 psize = (*(dsw->d_psize))(dumpdev); 643 if (psize == -1) { 644 printf("dump area unavailable\n"); 645 return; 646 } 647 648 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 649 minor(dumpdev), dumplo); 650 651 /* 652 * Prepare the dump header 653 */ 654 blkno = dumplo; 655 todo = dumpsize; /* pages */ 656 vaddr = (char *)dumppage; 657 memset(vaddr, 0, PAGE_SIZE); 658 659 /* Set pointers to all three parts. */ 660 kseg_p = (kcore_seg_t *)vaddr; 661 chdr_p = (cpu_kcore_hdr_t *)(kseg_p + 1); 662 sh = &chdr_p->un._sun3x; 663 664 /* Fill in kcore_seg_t part. */ 665 CORE_SETMAGIC(*kseg_p, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 666 kseg_p->c_size = (ctob(DUMP_EXTRA) - sizeof(*kseg_p)); 667 668 /* Fill in cpu_kcore_hdr_t part. */ 669 strncpy(chdr_p->name, kernel_arch, sizeof(chdr_p->name)); 670 chdr_p->page_size = PAGE_SIZE; 671 chdr_p->kernbase = KERNBASE; 672 673 /* Fill in the sun3x_kcore_hdr part. */ 674 pmap_kcore_hdr(sh); 675 676 /* Write out the dump header. */ 677 error = (*dsw->d_dump)(dumpdev, blkno, vaddr, PAGE_SIZE); 678 if (error) 679 goto fail; 680 blkno += btodb(PAGE_SIZE); 681 682 /* 683 * Now dump physical memory. Note that physical memory 684 * might NOT be congiguous, so do it by segments. 685 */ 686 687 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 while (todo && (segsz > 0)) { 695 696 /* Print pages left after every 16. */ 697 if ((todo & 0xf) == 0) 698 printf("\r%4d", todo); 699 700 /* Make a temporary mapping for the page. */ 701 pmap_kenter_pa(vmmap, paddr | PMAP_NC, VM_PROT_READ); 702 pmap_update(pmap_kernel()); 703 error = (*dsw->d_dump)(dumpdev, blkno, vaddr, 704 PAGE_SIZE); 705 pmap_kremove(vmmap, PAGE_SIZE); 706 pmap_update(pmap_kernel()); 707 if (error) 708 goto fail; 709 paddr += PAGE_SIZE; 710 segsz -= PAGE_SIZE; 711 blkno += btodb(PAGE_SIZE); 712 todo--; 713 } 714 } 715 printf("\rdump succeeded\n"); 716 return; 717 fail: 718 printf(" dump error=%d\n", error); 719 } 720 721 static void 722 initcpu() 723 { 724 /* XXX: Enable RAM parity/ECC checking? */ 725 /* XXX: parityenable(); */ 726 727 #ifdef HAVECACHE 728 cache_enable(); 729 #endif 730 } 731 732 /* straptrap() in trap.c */ 733 734 /* from hp300: badaddr() */ 735 /* peek_byte(), peek_word() moved to bus_subr.c */ 736 737 /* XXX: parityenable() ? */ 738 /* regdump() moved to regdump.c */ 739 740 /* 741 * cpu_exec_aout_makecmds(): 742 * CPU-dependent a.out format hook for execve(). 743 * 744 * Determine if the given exec package refers to something which we 745 * understand and, if so, set up the vmcmds for it. 746 */ 747 int 748 cpu_exec_aout_makecmds(p, epp) 749 struct proc *p; 750 struct exec_package *epp; 751 { 752 return ENOEXEC; 753 } 754
Indexes created Mon Sep 29 13:09:55 GMT 2025