machdep.c revision 1.117
1 /* $NetBSD: machdep.c,v 1.117 2009/01/21 16:24:34 he 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 1.117 2009/01/21 16:24:34 he 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 *mb_map = NULL; 142 struct vm_map *phys_map = NULL; 143 144 int physmem; 145 int fputype; 146 void * msgbufaddr; 147 148 /* Virtual page frame for /dev/mem (see mem.c) */ 149 vaddr_t vmmap; 150 151 /* 152 * safepri is a safe priority for sleep to set for a spin-wait 153 * during autoconfiguration or after a panic. 154 */ 155 int safepri = PSL_LOWIPL; 156 157 u_char cpu_machine_id = 0; 158 const char *cpu_string = NULL; 159 int cpu_has_vme = 0; 160 int has_iocache = 0; 161 162 vaddr_t dumppage; 163 164 static void identifycpu(void); 165 static void initcpu(void); 166 167 /* 168 * Console initialization: called early on from main, 169 * before vm init or cpu_startup. This system is able 170 * to use the console for output immediately (via PROM) 171 * but can not use it for input until after this point. 172 */ 173 void 174 consinit(void) 175 { 176 177 /* 178 * Switch from the PROM console (output only) 179 * to our own console driver. 180 */ 181 cninit(); 182 183 #if NKSYMS || defined(DDB) || defined(MODULAR) 184 { 185 extern int nsym; 186 extern char *ssym, *esym; 187 188 ksyms_addsyms_elf(nsym, ssym, esym); 189 } 190 #endif /* DDB */ 191 192 /* 193 * Now that the console can do input as well as 194 * output, consider stopping for a debugger. 195 */ 196 if (boothowto & RB_KDB) { 197 #ifdef KGDB 198 /* XXX - Ask on console for kgdb_dev? */ 199 /* Note: this will just return if kgdb_dev==NODEV */ 200 kgdb_connect(1); 201 #else /* KGDB */ 202 /* Either DDB or no debugger (just PROM). */ 203 Debugger(); 204 #endif /* KGDB */ 205 } 206 } 207 208 /* 209 * cpu_startup: allocate memory for variable-sized tables, 210 * initialize CPU, and do autoconfiguration. 211 * 212 * This is called early in init_main.c:main(), after the 213 * kernel memory allocator is ready for use, but before 214 * the creation of processes 1,2, and mountroot, etc. 215 */ 216 void 217 cpu_startup(void) 218 { 219 char *v; 220 vaddr_t minaddr, maxaddr; 221 char pbuf[9]; 222 223 /* 224 * Initialize message buffer (for kernel printf). 225 * This is put in physical page zero so it will 226 * always be in the same place after a reboot. 227 * Its mapping was prepared in pmap_bootstrap(). 228 * Also, offset some to avoid PROM scribbles. 229 */ 230 v = (char *)KERNBASE; 231 msgbufaddr = v + MSGBUFOFF; 232 initmsgbuf(msgbufaddr, MSGBUFSIZE); 233 234 /* 235 * Good {morning,afternoon,evening,night}. 236 */ 237 printf("%s%s", copyright, version); 238 identifycpu(); 239 initfpu(); /* also prints FPU type */ 240 241 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 242 printf("total memory = %s\n", pbuf); 243 244 /* 245 * Get scratch page for dumpsys(). 246 */ 247 dumppage = uvm_km_alloc(kernel_map, PAGE_SIZE, 0, UVM_KMF_WIRED); 248 if (dumppage == 0) 249 panic("startup: alloc dumppage"); 250 251 minaddr = 0; 252 253 /* 254 * Allocate a submap for physio 255 */ 256 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 257 VM_PHYS_SIZE, 0, false, NULL); 258 259 /* 260 * Finally, allocate mbuf cluster submap. 261 */ 262 mb_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 263 nmbclusters * mclbytes, VM_MAP_INTRSAFE, 264 false, NULL); 265 266 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 267 printf("avail memory = %s\n", pbuf); 268 269 /* 270 * Allocate a virtual page (for use by /dev/mem) 271 * This page is handed to pmap_enter() therefore 272 * it has to be in the normal kernel VA range. 273 */ 274 vmmap = uvm_km_alloc(kernel_map, PAGE_SIZE, 0, 275 UVM_KMF_VAONLY | UVM_KMF_WAITVA); 276 277 /* 278 * Create the DVMA maps. 279 */ 280 dvma_init(); 281 282 /* 283 * Set up CPU-specific registers, cache, etc. 284 */ 285 initcpu(); 286 } 287 288 /* 289 * Set registers on exec. 290 */ 291 void 292 setregs(struct lwp *l, struct exec_package *pack, u_long stack) 293 { 294 struct trapframe *tf = (struct trapframe *)l->l_md.md_regs; 295 296 tf->tf_sr = PSL_USERSET; 297 tf->tf_pc = pack->ep_entry & ~1; 298 tf->tf_regs[D0] = 0; 299 tf->tf_regs[D1] = 0; 300 tf->tf_regs[D2] = 0; 301 tf->tf_regs[D3] = 0; 302 tf->tf_regs[D4] = 0; 303 tf->tf_regs[D5] = 0; 304 tf->tf_regs[D6] = 0; 305 tf->tf_regs[D7] = 0; 306 tf->tf_regs[A0] = 0; 307 tf->tf_regs[A1] = 0; 308 tf->tf_regs[A2] = (int)l->l_proc->p_psstr; 309 tf->tf_regs[A3] = 0; 310 tf->tf_regs[A4] = 0; 311 tf->tf_regs[A5] = 0; 312 tf->tf_regs[A6] = 0; 313 tf->tf_regs[SP] = stack; 314 315 /* restore a null state frame */ 316 l->l_addr->u_pcb.pcb_fpregs.fpf_null = 0; 317 if (fputype) 318 m68881_restore(&l->l_addr->u_pcb.pcb_fpregs); 319 320 l->l_md.md_flags = 0; 321 } 322 323 /* 324 * Info for CTL_HW 325 */ 326 char machine[16] = MACHINE; /* from <machine/param.h> */ 327 char kernel_arch[16] = "sun3x"; /* XXX needs a sysctl node */ 328 char cpu_model[120]; 329 330 /* 331 * XXX - Should empirically estimate the divisor... 332 * Note that the value of delay_divisor is roughly 333 * 2048 / cpuclock (where cpuclock is in MHz). 334 */ 335 int delay_divisor = 62; /* assume the fastest (33 MHz) */ 336 337 void 338 identifycpu(void) 339 { 340 u_char machtype; 341 342 machtype = identity_prom.idp_machtype; 343 if ((machtype & IDM_ARCH_MASK) != IDM_ARCH_SUN3X) { 344 printf("Bad IDPROM arch!\n"); 345 sunmon_abort(); 346 } 347 348 cpu_machine_id = machtype; 349 switch (cpu_machine_id) { 350 351 case ID_SUN3X_80: 352 cpu_string = "80"; /* Hydra */ 353 delay_divisor = 102; /* 20 MHz */ 354 cpu_has_vme = false; 355 break; 356 357 case ID_SUN3X_470: 358 cpu_string = "470"; /* Pegasus */ 359 delay_divisor = 62; /* 33 MHz */ 360 cpu_has_vme = true; 361 break; 362 363 default: 364 printf("unknown sun3x model\n"); 365 sunmon_abort(); 366 } 367 368 /* Other stuff? (VAC, mc6888x version, etc.) */ 369 /* Note: miniroot cares about the kernel_arch part. */ 370 sprintf(cpu_model, "%s %s", kernel_arch, cpu_string); 371 372 printf("Model: %s\n", cpu_model); 373 } 374 375 /* 376 * machine dependent system variables. 377 */ 378 #if 0 /* XXX - Not yet... */ 379 static int 380 sysctl_machdep_root_device(SYSCTLFN_ARGS) 381 { 382 struct sysctlnode node = *rnode; 383 384 node.sysctl_data = some permutation on root_device; 385 node.sysctl_size = strlen(root_device) + 1; 386 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 387 } 388 389 static int 390 sysctl_machdep_booted_kernel(SYSCTLFN_ARGS) 391 { 392 struct sysctlnode node = *rnode; 393 394 node.sysctl_data = some permutation on booted_kernel; 395 node.sysctl_size = strlen(booted_kernel) + 1; 396 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 397 } 398 #endif 399 400 SYSCTL_SETUP(sysctl_machdep_setup, "sysctl machdep subtree setup") 401 { 402 403 sysctl_createv(clog, 0, NULL, NULL, 404 CTLFLAG_PERMANENT, 405 CTLTYPE_NODE, "machdep", NULL, 406 NULL, 0, NULL, 0, 407 CTL_MACHDEP, CTL_EOL); 408 409 sysctl_createv(clog, 0, NULL, NULL, 410 CTLFLAG_PERMANENT, 411 CTLTYPE_STRUCT, "console_device", NULL, 412 sysctl_consdev, 0, NULL, sizeof(dev_t), 413 CTL_MACHDEP, CPU_CONSDEV, CTL_EOL); 414 #if 0 /* XXX - Not yet... */ 415 sysctl_createv(clog, 0, NULL, NULL, 416 CTLFLAG_PERMANENT, 417 CTLTYPE_STRING, "root_device", NULL, 418 sysctl_machdep_root_device, 0, NULL, 0, 419 CTL_MACHDEP, CPU_ROOT_DEVICE, CTL_EOL); 420 sysctl_createv(clog, 0, NULL, NULL, 421 CTLFLAG_PERMANENT, 422 CTLTYPE_STRING, "booted_kernel", NULL, 423 sysctl_machdep_booted_kernel, 0, NULL, 0, 424 CTL_MACHDEP, CPU_BOOTED_KERNEL, CTL_EOL); 425 #endif 426 } 427 428 /* See: sig_machdep.c */ 429 430 /* 431 * Do a sync in preparation for a reboot. 432 * XXX - This could probably be common code. 433 * XXX - And now, most of it is in vfs_shutdown() 434 * XXX - Put waittime checks in there too? 435 */ 436 int waittime = -1; /* XXX - Who else looks at this? -gwr */ 437 static void 438 reboot_sync(void) 439 { 440 441 /* Check waittime here to localize its use to this function. */ 442 if (waittime >= 0) 443 return; 444 waittime = 0; 445 vfs_shutdown(); 446 } 447 448 /* 449 * Common part of the BSD and SunOS reboot system calls. 450 */ 451 __dead void 452 cpu_reboot(int howto, char *user_boot_string) 453 { 454 /* Note: this string MUST be static! */ 455 static char bootstr[128]; 456 char *p; 457 458 /* If system is cold, just halt. (early panic?) */ 459 if (cold) 460 goto haltsys; 461 462 /* Un-blank the screen if appropriate. */ 463 cnpollc(1); 464 465 if ((howto & RB_NOSYNC) == 0) { 466 reboot_sync(); 467 /* 468 * If we've been adjusting the clock, the todr 469 * will be out of synch; adjust it now. 470 * 471 * XXX - However, if the kernel has been sitting in ddb, 472 * the time will be way off, so don't set the HW clock! 473 * XXX - Should do sanity check against HW clock. -gwr 474 */ 475 /* resettodr(); */ 476 } 477 478 /* Disable interrupts. */ 479 splhigh(); 480 481 /* Write out a crash dump if asked. */ 482 if (howto & RB_DUMP) 483 dumpsys(); 484 485 /* run any shutdown hooks */ 486 doshutdownhooks(); 487 488 pmf_system_shutdown(boothowto); 489 490 if (howto & RB_HALT) { 491 haltsys: 492 printf("halted.\n"); 493 sunmon_halt(); 494 } 495 496 /* 497 * Automatic reboot. 498 */ 499 if (user_boot_string) 500 strncpy(bootstr, user_boot_string, sizeof(bootstr)); 501 else { 502 /* 503 * Build our own boot string with an empty 504 * boot device/file and (maybe) some flags. 505 * The PROM will supply the device/file name. 506 */ 507 p = bootstr; 508 *p = '\0'; 509 if (howto & (RB_KDB|RB_ASKNAME|RB_SINGLE)) { 510 /* Append the boot flags. */ 511 *p++ = ' '; 512 *p++ = '-'; 513 if (howto & RB_KDB) 514 *p++ = 'd'; 515 if (howto & RB_ASKNAME) 516 *p++ = 'a'; 517 if (howto & RB_SINGLE) 518 *p++ = 's'; 519 *p = '\0'; 520 } 521 } 522 printf("rebooting...\n"); 523 sunmon_reboot(bootstr); 524 for (;;) ; 525 /*NOTREACHED*/ 526 } 527 528 /* 529 * These variables are needed by /sbin/savecore 530 */ 531 uint32_t dumpmag = 0x8fca0101; /* magic number */ 532 int dumpsize = 0; /* pages */ 533 long dumplo = 0; /* blocks */ 534 535 #define DUMP_EXTRA 1 /* CPU-dependent extra pages */ 536 537 /* 538 * This is called by main to set dumplo, dumpsize. 539 * Dumps always skip the first PAGE_SIZE of disk space 540 * in case there might be a disk label stored there. 541 * If there is extra space, put dump at the end to 542 * reduce the chance that swapping trashes it. 543 */ 544 void 545 cpu_dumpconf(void) 546 { 547 const struct bdevsw *bdev; 548 int devblks; /* size of dump device in blocks */ 549 int dumpblks; /* size of dump image in blocks */ 550 int (*getsize)(dev_t); 551 552 if (dumpdev == NODEV) 553 return; 554 555 bdev = bdevsw_lookup(dumpdev); 556 if (bdev == NULL) { 557 dumpdev = NODEV; 558 return; 559 } 560 getsize = bdev->d_psize; 561 if (getsize == NULL) 562 return; 563 devblks = (*getsize)(dumpdev); 564 if (devblks <= ctod(1)) 565 return; 566 devblks &= ~(ctod(1) - 1); 567 568 /* 569 * Note: savecore expects dumpsize to be the 570 * number of pages AFTER the dump header. 571 */ 572 dumpsize = physmem; /* pages */ 573 574 /* Position dump image near end of space, page aligned. */ 575 dumpblks = ctod(physmem + DUMP_EXTRA); 576 dumplo = devblks - dumpblks; 577 578 /* If it does not fit, truncate it by moving dumplo. */ 579 /* Note: Must force signed comparison. */ 580 if (dumplo < ((long)ctod(1))) { 581 dumplo = ctod(1); 582 dumpsize = dtoc(devblks - dumplo) - DUMP_EXTRA; 583 } 584 } 585 586 /* Note: gdb looks for "dumppcb" in a kernel crash dump. */ 587 struct pcb dumppcb; 588 589 /* 590 * Write a crash dump. The format while in swap is: 591 * kcore_seg_t cpu_hdr; 592 * cpu_kcore_hdr_t cpu_data; 593 * padding (PAGE_SIZE-sizeof(kcore_seg_t)) 594 * pagemap (2*PAGE_SIZE) 595 * physical memory... 596 */ 597 void 598 dumpsys(void) 599 { 600 const struct bdevsw *dsw; 601 kcore_seg_t *kseg_p; 602 cpu_kcore_hdr_t *chdr_p; 603 struct sun3x_kcore_hdr *sh; 604 phys_ram_seg_t *crs_p; 605 char *vaddr; 606 paddr_t paddr; 607 int psize, todo, seg, segsz; 608 daddr_t blkno; 609 int error = 0; 610 611 if (dumpdev == NODEV) 612 return; 613 dsw = bdevsw_lookup(dumpdev); 614 if (dsw == NULL || dsw->d_psize == NULL) 615 return; 616 617 /* 618 * For dumps during autoconfiguration, 619 * if dump device has already configured... 620 */ 621 if (dumpsize == 0) 622 cpu_dumpconf(); 623 if (dumplo <= 0) { 624 printf("\ndump to dev %u,%u not possible\n", 625 major(dumpdev), minor(dumpdev)); 626 return; 627 } 628 savectx(&dumppcb); 629 630 psize = (*(dsw->d_psize))(dumpdev); 631 if (psize == -1) { 632 printf("dump area unavailable\n"); 633 return; 634 } 635 636 printf("\ndumping to dev %u,%u offset %ld\n", 637 major(dumpdev), minor(dumpdev), dumplo); 638 639 /* 640 * Prepare the dump header 641 */ 642 blkno = dumplo; 643 todo = dumpsize; /* pages */ 644 vaddr = (char *)dumppage; 645 memset(vaddr, 0, PAGE_SIZE); 646 647 /* Set pointers to all three parts. */ 648 kseg_p = (kcore_seg_t *)vaddr; 649 chdr_p = (cpu_kcore_hdr_t *)(kseg_p + 1); 650 sh = &chdr_p->un._sun3x; 651 652 /* Fill in kcore_seg_t part. */ 653 CORE_SETMAGIC(*kseg_p, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 654 kseg_p->c_size = (ctob(DUMP_EXTRA) - sizeof(*kseg_p)); 655 656 /* Fill in cpu_kcore_hdr_t part. */ 657 strncpy(chdr_p->name, kernel_arch, sizeof(chdr_p->name)); 658 chdr_p->page_size = PAGE_SIZE; 659 chdr_p->kernbase = KERNBASE; 660 661 /* Fill in the sun3x_kcore_hdr part. */ 662 pmap_kcore_hdr(sh); 663 664 /* Write out the dump header. */ 665 error = (*dsw->d_dump)(dumpdev, blkno, vaddr, PAGE_SIZE); 666 if (error) 667 goto fail; 668 blkno += btodb(PAGE_SIZE); 669 670 /* 671 * Now dump physical memory. Note that physical memory 672 * might NOT be congiguous, so do it by segments. 673 */ 674 675 vaddr = (char *)vmmap; /* Borrow /dev/mem VA */ 676 677 for (seg = 0; seg < SUN3X_NPHYS_RAM_SEGS; seg++) { 678 crs_p = &sh->ram_segs[seg]; 679 paddr = crs_p->start; 680 segsz = crs_p->size; 681 682 while (todo && (segsz > 0)) { 683 684 /* Print pages left after every 16. */ 685 if ((todo & 0xf) == 0) 686 printf_nolog("\r%4d", todo); 687 688 /* Make a temporary mapping for the page. */ 689 pmap_kenter_pa(vmmap, paddr | PMAP_NC, VM_PROT_READ); 690 pmap_update(pmap_kernel()); 691 error = (*dsw->d_dump)(dumpdev, blkno, vaddr, 692 PAGE_SIZE); 693 pmap_kremove(vmmap, PAGE_SIZE); 694 pmap_update(pmap_kernel()); 695 if (error) 696 goto fail; 697 paddr += PAGE_SIZE; 698 segsz -= PAGE_SIZE; 699 blkno += btodb(PAGE_SIZE); 700 todo--; 701 } 702 } 703 printf("\rdump succeeded\n"); 704 return; 705 fail: 706 printf(" dump error=%d\n", error); 707 } 708 709 static void 710 initcpu(void) 711 { 712 /* XXX: Enable RAM parity/ECC checking? */ 713 /* XXX: parityenable(); */ 714 715 #ifdef HAVECACHE 716 cache_enable(); 717 #endif 718 } 719 720 /* straptrap() in trap.c */ 721 722 /* from hp300: badaddr() */ 723 /* peek_byte(), peek_word() moved to bus_subr.c */ 724 725 /* XXX: parityenable() ? */ 726 /* regdump() moved to regdump.c */ 727 728 /* 729 * cpu_exec_aout_makecmds(): 730 * CPU-dependent a.out format hook for execve(). 731 * 732 * Determine if the given exec package refers to something which we 733 * understand and, if so, set up the vmcmds for it. 734 */ 735 int 736 cpu_exec_aout_makecmds(struct lwp *l, struct exec_package *epp) 737 { 738 return ENOEXEC; 739 } 740
Indexes created Thu Sep 25 16:09:42 GMT 2025