machdep.c revision 1.107
1 /* $NetBSD: machdep.c,v 1.107 2007/03/04 06:00:55 christos 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 1.107 2007/03/04 06:00:55 christos 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/syscallargs.h> 104 #include <sys/ksyms.h> 105 #ifdef KGDB 106 #include <sys/kgdb.h> 107 #endif 108 109 #include <uvm/uvm_extern.h> 110 111 #include <sys/sysctl.h> 112 113 #include <dev/cons.h> 114 115 #include <machine/cpu.h> 116 #include <machine/dvma.h> 117 #include <machine/idprom.h> 118 #include <machine/kcore.h> 119 #include <machine/reg.h> 120 #include <machine/psl.h> 121 #include <machine/pte.h> 122 123 #if defined(DDB) 124 #include <machine/db_machdep.h> 125 #include <ddb/db_sym.h> 126 #include <ddb/db_extern.h> 127 #endif 128 129 #include <sun3/sun3/machdep.h> 130 131 #include "ksyms.h" 132 133 /* Defined in locore.s */ 134 extern char kernel_text[]; 135 /* Defined by the linker */ 136 extern char etext[]; 137 138 /* Our exported CPU info; we can have only one. */ 139 struct cpu_info cpu_info_store; 140 141 struct vm_map *exec_map = NULL; 142 struct vm_map *mb_map = NULL; 143 struct vm_map *phys_map = NULL; 144 145 int physmem; 146 int fputype; 147 void * msgbufaddr; 148 149 /* Virtual page frame for /dev/mem (see mem.c) */ 150 vaddr_t vmmap; 151 152 /* 153 * safepri is a safe priority for sleep to set for a spin-wait 154 * during autoconfiguration or after a panic. 155 */ 156 int safepri = PSL_LOWIPL; 157 158 u_char cpu_machine_id = 0; 159 const char *cpu_string = NULL; 160 int cpu_has_vme = 0; 161 int has_iocache = 0; 162 163 vaddr_t dumppage; 164 165 static void identifycpu(void); 166 static void initcpu(void); 167 168 /* 169 * Console initialization: called early on from main, 170 * before vm init or cpu_startup. This system is able 171 * to use the console for output immediately (via PROM) 172 * but can not use it for input until after this point. 173 */ 174 void 175 consinit(void) 176 { 177 178 /* 179 * Switch from the PROM console (output only) 180 * to our own console driver. 181 */ 182 cninit(); 183 184 #if NKSYMS || defined(DDB) || defined(LKM) 185 { 186 extern int nsym; 187 extern char *ssym, *esym; 188 189 ksyms_init(nsym, ssym, esym); 190 } 191 #endif /* DDB */ 192 193 /* 194 * Now that the console can do input as well as 195 * output, consider stopping for a debugger. 196 */ 197 if (boothowto & RB_KDB) { 198 #ifdef KGDB 199 /* XXX - Ask on console for kgdb_dev? */ 200 /* Note: this will just return if kgdb_dev==NODEV */ 201 kgdb_connect(1); 202 #else /* KGDB */ 203 /* Either DDB or no debugger (just PROM). */ 204 Debugger(); 205 #endif /* KGDB */ 206 } 207 } 208 209 /* 210 * cpu_startup: allocate memory for variable-sized tables, 211 * initialize CPU, and do autoconfiguration. 212 * 213 * This is called early in init_main.c:main(), after the 214 * kernel memory allocator is ready for use, but before 215 * the creation of processes 1,2, and mountroot, etc. 216 */ 217 void 218 cpu_startup(void) 219 { 220 void *v; 221 vaddr_t minaddr, maxaddr; 222 char pbuf[9]; 223 224 if (fputype != FPU_NONE) 225 m68k_make_fpu_idle_frame(); 226 227 /* 228 * Initialize message buffer (for kernel printf). 229 * This is put in physical page zero so it will 230 * always be in the same place after a reboot. 231 * Its mapping was prepared in pmap_bootstrap(). 232 * Also, offset some to avoid PROM scribbles. 233 */ 234 v = (void *) KERNBASE; 235 msgbufaddr = (void *)(v + MSGBUFOFF); 236 initmsgbuf(msgbufaddr, MSGBUFSIZE); 237 238 /* 239 * Good {morning,afternoon,evening,night}. 240 */ 241 printf("%s%s", copyright, version); 242 identifycpu(); 243 initfpu(); /* also prints FPU type */ 244 245 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 246 printf("total memory = %s\n", pbuf); 247 248 /* 249 * Get scratch page for dumpsys(). 250 */ 251 dumppage = uvm_km_alloc(kernel_map, PAGE_SIZE, 0, UVM_KMF_WIRED); 252 if (dumppage == 0) 253 panic("startup: alloc dumppage"); 254 255 minaddr = 0; 256 /* 257 * Allocate a submap for exec arguments. This map effectively 258 * limits the number of processes exec'ing at any time. 259 */ 260 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 261 16*NCARGS, VM_MAP_PAGEABLE, false, NULL); 262 263 /* 264 * Allocate a submap for physio 265 */ 266 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 267 VM_PHYS_SIZE, 0, false, NULL); 268 269 /* 270 * Finally, allocate mbuf cluster submap. 271 */ 272 mb_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 273 nmbclusters * mclbytes, VM_MAP_INTRSAFE, 274 false, NULL); 275 276 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 277 printf("avail memory = %s\n", pbuf); 278 279 /* 280 * Allocate a virtual page (for use by /dev/mem) 281 * This page is handed to pmap_enter() therefore 282 * it has to be in the normal kernel VA range. 283 */ 284 vmmap = uvm_km_alloc(kernel_map, PAGE_SIZE, 0, 285 UVM_KMF_VAONLY | UVM_KMF_WAITVA); 286 287 /* 288 * Create the DVMA maps. 289 */ 290 dvma_init(); 291 292 /* 293 * Set up CPU-specific registers, cache, etc. 294 */ 295 initcpu(); 296 } 297 298 /* 299 * Set registers on exec. 300 */ 301 void 302 setregs(struct lwp *l, struct exec_package *pack, u_long stack) 303 { 304 struct trapframe *tf = (struct trapframe *)l->l_md.md_regs; 305 306 tf->tf_sr = PSL_USERSET; 307 tf->tf_pc = pack->ep_entry & ~1; 308 tf->tf_regs[D0] = 0; 309 tf->tf_regs[D1] = 0; 310 tf->tf_regs[D2] = 0; 311 tf->tf_regs[D3] = 0; 312 tf->tf_regs[D4] = 0; 313 tf->tf_regs[D5] = 0; 314 tf->tf_regs[D6] = 0; 315 tf->tf_regs[D7] = 0; 316 tf->tf_regs[A0] = 0; 317 tf->tf_regs[A1] = 0; 318 tf->tf_regs[A2] = (int)l->l_proc->p_psstr; 319 tf->tf_regs[A3] = 0; 320 tf->tf_regs[A4] = 0; 321 tf->tf_regs[A5] = 0; 322 tf->tf_regs[A6] = 0; 323 tf->tf_regs[SP] = stack; 324 325 /* restore a null state frame */ 326 l->l_addr->u_pcb.pcb_fpregs.fpf_null = 0; 327 if (fputype) 328 m68881_restore(&l->l_addr->u_pcb.pcb_fpregs); 329 330 l->l_md.md_flags = 0; 331 } 332 333 /* 334 * Info for CTL_HW 335 */ 336 char machine[16] = MACHINE; /* from <machine/param.h> */ 337 char kernel_arch[16] = "sun3x"; /* XXX needs a sysctl node */ 338 char cpu_model[120]; 339 340 /* 341 * XXX - Should empirically estimate the divisor... 342 * Note that the value of delay_divisor is roughly 343 * 2048 / cpuclock (where cpuclock is in MHz). 344 */ 345 int delay_divisor = 62; /* assume the fastest (33 MHz) */ 346 347 void 348 identifycpu(void) 349 { 350 u_char machtype; 351 352 machtype = identity_prom.idp_machtype; 353 if ((machtype & IDM_ARCH_MASK) != IDM_ARCH_SUN3X) { 354 printf("Bad IDPROM arch!\n"); 355 sunmon_abort(); 356 } 357 358 cpu_machine_id = machtype; 359 switch (cpu_machine_id) { 360 361 case ID_SUN3X_80: 362 cpu_string = "80"; /* Hydra */ 363 delay_divisor = 102; /* 20 MHz */ 364 cpu_has_vme = false; 365 break; 366 367 case ID_SUN3X_470: 368 cpu_string = "470"; /* Pegasus */ 369 delay_divisor = 62; /* 33 MHz */ 370 cpu_has_vme = true; 371 break; 372 373 default: 374 printf("unknown sun3x model\n"); 375 sunmon_abort(); 376 } 377 378 /* Other stuff? (VAC, mc6888x version, etc.) */ 379 /* Note: miniroot cares about the kernel_arch part. */ 380 sprintf(cpu_model, "%s %s", kernel_arch, cpu_string); 381 382 printf("Model: %s\n", cpu_model); 383 } 384 385 /* 386 * machine dependent system variables. 387 */ 388 #if 0 /* XXX - Not yet... */ 389 static int 390 sysctl_machdep_root_device(SYSCTLFN_ARGS) 391 { 392 struct sysctlnode node = *rnode; 393 394 node.sysctl_data = some permutation on root_device; 395 node.sysctl_size = strlen(root_device) + 1; 396 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 397 } 398 399 static int 400 sysctl_machdep_booted_kernel(SYSCTLFN_ARGS) 401 { 402 struct sysctlnode node = *rnode; 403 404 node.sysctl_data = some permutation on booted_kernel; 405 node.sysctl_size = strlen(booted_kernel) + 1; 406 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 407 } 408 #endif 409 410 SYSCTL_SETUP(sysctl_machdep_setup, "sysctl machdep subtree setup") 411 { 412 413 sysctl_createv(clog, 0, NULL, NULL, 414 CTLFLAG_PERMANENT, 415 CTLTYPE_NODE, "machdep", NULL, 416 NULL, 0, NULL, 0, 417 CTL_MACHDEP, CTL_EOL); 418 419 sysctl_createv(clog, 0, NULL, NULL, 420 CTLFLAG_PERMANENT, 421 CTLTYPE_STRUCT, "console_device", NULL, 422 sysctl_consdev, 0, NULL, sizeof(dev_t), 423 CTL_MACHDEP, CPU_CONSDEV, CTL_EOL); 424 #if 0 /* XXX - Not yet... */ 425 sysctl_createv(clog, 0, NULL, NULL, 426 CTLFLAG_PERMANENT, 427 CTLTYPE_STRING, "root_device", NULL, 428 sysctl_machdep_root_device, 0, NULL, 0, 429 CTL_MACHDEP, CPU_ROOT_DEVICE, CTL_EOL); 430 sysctl_createv(clog, 0, NULL, NULL, 431 CTLFLAG_PERMANENT, 432 CTLTYPE_STRING, "booted_kernel", NULL, 433 sysctl_machdep_booted_kernel, 0, NULL, 0, 434 CTL_MACHDEP, CPU_BOOTED_KERNEL, CTL_EOL); 435 #endif 436 } 437 438 /* See: sig_machdep.c */ 439 440 /* 441 * Do a sync in preparation for a reboot. 442 * XXX - This could probably be common code. 443 * XXX - And now, most of it is in vfs_shutdown() 444 * XXX - Put waittime checks in there too? 445 */ 446 int waittime = -1; /* XXX - Who else looks at this? -gwr */ 447 static void 448 reboot_sync(void) 449 { 450 451 /* Check waittime here to localize its use to this function. */ 452 if (waittime >= 0) 453 return; 454 waittime = 0; 455 vfs_shutdown(); 456 } 457 458 /* 459 * Common part of the BSD and SunOS reboot system calls. 460 */ 461 __dead void 462 cpu_reboot(int howto, char *user_boot_string) 463 { 464 /* Note: this string MUST be static! */ 465 static char bootstr[128]; 466 char *p; 467 468 /* If system is cold, just halt. (early panic?) */ 469 if (cold) 470 goto haltsys; 471 472 /* Un-blank the screen if appropriate. */ 473 cnpollc(1); 474 475 if ((howto & RB_NOSYNC) == 0) { 476 reboot_sync(); 477 /* 478 * If we've been adjusting the clock, the todr 479 * will be out of synch; adjust it now. 480 * 481 * XXX - However, if the kernel has been sitting in ddb, 482 * the time will be way off, so don't set the HW clock! 483 * XXX - Should do sanity check against HW clock. -gwr 484 */ 485 /* resettodr(); */ 486 } 487 488 /* Disable interrupts. */ 489 splhigh(); 490 491 /* Write out a crash dump if asked. */ 492 if (howto & RB_DUMP) 493 dumpsys(); 494 495 /* run any shutdown hooks */ 496 doshutdownhooks(); 497 498 if (howto & RB_HALT) { 499 haltsys: 500 printf("halted.\n"); 501 sunmon_halt(); 502 } 503 504 /* 505 * Automatic reboot. 506 */ 507 if (user_boot_string) 508 strncpy(bootstr, user_boot_string, sizeof(bootstr)); 509 else { 510 /* 511 * Build our own boot string with an empty 512 * boot device/file and (maybe) some flags. 513 * The PROM will supply the device/file name. 514 */ 515 p = bootstr; 516 *p = '\0'; 517 if (howto & (RB_KDB|RB_ASKNAME|RB_SINGLE)) { 518 /* Append the boot flags. */ 519 *p++ = ' '; 520 *p++ = '-'; 521 if (howto & RB_KDB) 522 *p++ = 'd'; 523 if (howto & RB_ASKNAME) 524 *p++ = 'a'; 525 if (howto & RB_SINGLE) 526 *p++ = 's'; 527 *p = '\0'; 528 } 529 } 530 printf("rebooting...\n"); 531 sunmon_reboot(bootstr); 532 for (;;) ; 533 /*NOTREACHED*/ 534 } 535 536 /* 537 * These variables are needed by /sbin/savecore 538 */ 539 uint32_t dumpmag = 0x8fca0101; /* magic number */ 540 int dumpsize = 0; /* pages */ 541 long dumplo = 0; /* blocks */ 542 543 #define DUMP_EXTRA 1 /* CPU-dependent extra pages */ 544 545 /* 546 * This is called by main to set dumplo, dumpsize. 547 * Dumps always skip the first PAGE_SIZE of disk space 548 * in case there might be a disk label stored there. 549 * If there is extra space, put dump at the end to 550 * reduce the chance that swapping trashes it. 551 */ 552 void 553 cpu_dumpconf(void) 554 { 555 const struct bdevsw *bdev; 556 int devblks; /* size of dump device in blocks */ 557 int dumpblks; /* size of dump image in blocks */ 558 int (*getsize)(dev_t); 559 560 if (dumpdev == NODEV) 561 return; 562 563 bdev = bdevsw_lookup(dumpdev); 564 if (bdev == NULL) { 565 dumpdev = NODEV; 566 return; 567 } 568 getsize = bdev->d_psize; 569 if (getsize == NULL) 570 return; 571 devblks = (*getsize)(dumpdev); 572 if (devblks <= ctod(1)) 573 return; 574 devblks &= ~(ctod(1) - 1); 575 576 /* 577 * Note: savecore expects dumpsize to be the 578 * number of pages AFTER the dump header. 579 */ 580 dumpsize = physmem; /* pages */ 581 582 /* Position dump image near end of space, page aligned. */ 583 dumpblks = ctod(physmem + DUMP_EXTRA); 584 dumplo = devblks - dumpblks; 585 586 /* If it does not fit, truncate it by moving dumplo. */ 587 /* Note: Must force signed comparison. */ 588 if (dumplo < ((long)ctod(1))) { 589 dumplo = ctod(1); 590 dumpsize = dtoc(devblks - dumplo) - DUMP_EXTRA; 591 } 592 } 593 594 /* Note: gdb looks for "dumppcb" in a kernel crash dump. */ 595 struct pcb dumppcb; 596 597 /* 598 * Write a crash dump. The format while in swap is: 599 * kcore_seg_t cpu_hdr; 600 * cpu_kcore_hdr_t cpu_data; 601 * padding (PAGE_SIZE-sizeof(kcore_seg_t)) 602 * pagemap (2*PAGE_SIZE) 603 * physical memory... 604 */ 605 void 606 dumpsys(void) 607 { 608 const struct bdevsw *dsw; 609 kcore_seg_t *kseg_p; 610 cpu_kcore_hdr_t *chdr_p; 611 struct sun3x_kcore_hdr *sh; 612 phys_ram_seg_t *crs_p; 613 char *vaddr; 614 paddr_t paddr; 615 int psize, todo, seg, segsz; 616 daddr_t blkno; 617 int error = 0; 618 619 if (dumpdev == NODEV) 620 return; 621 dsw = bdevsw_lookup(dumpdev); 622 if (dsw == NULL || dsw->d_psize == NULL) 623 return; 624 625 /* 626 * For dumps during autoconfiguration, 627 * if dump device has already configured... 628 */ 629 if (dumpsize == 0) 630 cpu_dumpconf(); 631 if (dumplo <= 0) { 632 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 633 minor(dumpdev)); 634 return; 635 } 636 savectx(&dumppcb); 637 638 psize = (*(dsw->d_psize))(dumpdev); 639 if (psize == -1) { 640 printf("dump area unavailable\n"); 641 return; 642 } 643 644 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 645 minor(dumpdev), dumplo); 646 647 /* 648 * Prepare the dump header 649 */ 650 blkno = dumplo; 651 todo = dumpsize; /* pages */ 652 vaddr = (char *)dumppage; 653 memset(vaddr, 0, PAGE_SIZE); 654 655 /* Set pointers to all three parts. */ 656 kseg_p = (kcore_seg_t *)vaddr; 657 chdr_p = (cpu_kcore_hdr_t *)(kseg_p + 1); 658 sh = &chdr_p->un._sun3x; 659 660 /* Fill in kcore_seg_t part. */ 661 CORE_SETMAGIC(*kseg_p, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 662 kseg_p->c_size = (ctob(DUMP_EXTRA) - sizeof(*kseg_p)); 663 664 /* Fill in cpu_kcore_hdr_t part. */ 665 strncpy(chdr_p->name, kernel_arch, sizeof(chdr_p->name)); 666 chdr_p->page_size = PAGE_SIZE; 667 chdr_p->kernbase = KERNBASE; 668 669 /* Fill in the sun3x_kcore_hdr part. */ 670 pmap_kcore_hdr(sh); 671 672 /* Write out the dump header. */ 673 error = (*dsw->d_dump)(dumpdev, blkno, vaddr, PAGE_SIZE); 674 if (error) 675 goto fail; 676 blkno += btodb(PAGE_SIZE); 677 678 /* 679 * Now dump physical memory. Note that physical memory 680 * might NOT be congiguous, so do it by segments. 681 */ 682 683 vaddr = (char *)vmmap; /* Borrow /dev/mem VA */ 684 685 for (seg = 0; seg < SUN3X_NPHYS_RAM_SEGS; seg++) { 686 crs_p = &sh->ram_segs[seg]; 687 paddr = crs_p->start; 688 segsz = crs_p->size; 689 690 while (todo && (segsz > 0)) { 691 692 /* Print pages left after every 16. */ 693 if ((todo & 0xf) == 0) 694 printf("\r%4d", todo); 695 696 /* Make a temporary mapping for the page. */ 697 pmap_kenter_pa(vmmap, paddr | PMAP_NC, VM_PROT_READ); 698 pmap_update(pmap_kernel()); 699 error = (*dsw->d_dump)(dumpdev, blkno, vaddr, 700 PAGE_SIZE); 701 pmap_kremove(vmmap, PAGE_SIZE); 702 pmap_update(pmap_kernel()); 703 if (error) 704 goto fail; 705 paddr += PAGE_SIZE; 706 segsz -= PAGE_SIZE; 707 blkno += btodb(PAGE_SIZE); 708 todo--; 709 } 710 } 711 printf("\rdump succeeded\n"); 712 return; 713 fail: 714 printf(" dump error=%d\n", error); 715 } 716 717 static void 718 initcpu(void) 719 { 720 /* XXX: Enable RAM parity/ECC checking? */ 721 /* XXX: parityenable(); */ 722 723 #ifdef HAVECACHE 724 cache_enable(); 725 #endif 726 } 727 728 /* straptrap() in trap.c */ 729 730 /* from hp300: badaddr() */ 731 /* peek_byte(), peek_word() moved to bus_subr.c */ 732 733 /* XXX: parityenable() ? */ 734 /* regdump() moved to regdump.c */ 735 736 /* 737 * cpu_exec_aout_makecmds(): 738 * CPU-dependent a.out format hook for execve(). 739 * 740 * Determine if the given exec package refers to something which we 741 * understand and, if so, set up the vmcmds for it. 742 */ 743 int 744 cpu_exec_aout_makecmds(struct lwp *l, struct exec_package *epp) 745 { 746 return ENOEXEC; 747 } 748
Indexes created Tue Sep 23 21:09:50 GMT 2025