1 /* $NetBSD: machdep.c,v 1.110 2007/10/17 19:57:47 garbled 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 1.110 2007/10/17 19:57:47 garbled 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 char *v; 221 vaddr_t minaddr, maxaddr; 222 char pbuf[9]; 223 224 /* 225 * Initialize message buffer (for kernel printf). 226 * This is put in physical page zero so it will 227 * always be in the same place after a reboot. 228 * Its mapping was prepared in pmap_bootstrap(). 229 * Also, offset some to avoid PROM scribbles. 230 */ 231 v = (char *)KERNBASE; 232 msgbufaddr = v + MSGBUFOFF; 233 initmsgbuf(msgbufaddr, MSGBUFSIZE); 234 235 /* 236 * Good {morning,afternoon,evening,night}. 237 */ 238 printf("%s%s", copyright, version); 239 identifycpu(); 240 initfpu(); /* also prints FPU type */ 241 242 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 243 printf("total memory = %s\n", pbuf); 244 245 /* 246 * Get scratch page for dumpsys(). 247 */ 248 dumppage = uvm_km_alloc(kernel_map, PAGE_SIZE, 0, UVM_KMF_WIRED); 249 if (dumppage == 0) 250 panic("startup: alloc dumppage"); 251 252 minaddr = 0; 253 /* 254 * Allocate a submap for exec arguments. This map effectively 255 * limits the number of processes exec'ing at any time. 256 */ 257 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 258 16*NCARGS, VM_MAP_PAGEABLE, false, NULL); 259 260 /* 261 * Allocate a submap for physio 262 */ 263 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 264 VM_PHYS_SIZE, 0, false, NULL); 265 266 /* 267 * Finally, allocate mbuf cluster submap. 268 */ 269 mb_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 270 nmbclusters * mclbytes, VM_MAP_INTRSAFE, 271 false, NULL); 272 273 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 274 printf("avail memory = %s\n", pbuf); 275 276 /* 277 * Allocate a virtual page (for use by /dev/mem) 278 * This page is handed to pmap_enter() therefore 279 * it has to be in the normal kernel VA range. 280 */ 281 vmmap = uvm_km_alloc(kernel_map, PAGE_SIZE, 0, 282 UVM_KMF_VAONLY | UVM_KMF_WAITVA); 283 284 /* 285 * Create the DVMA maps. 286 */ 287 dvma_init(); 288 289 /* 290 * Set up CPU-specific registers, cache, etc. 291 */ 292 initcpu(); 293 } 294 295 /* 296 * Set registers on exec. 297 */ 298 void 299 setregs(struct lwp *l, struct exec_package *pack, u_long stack) 300 { 301 struct trapframe *tf = (struct trapframe *)l->l_md.md_regs; 302 303 tf->tf_sr = PSL_USERSET; 304 tf->tf_pc = pack->ep_entry & ~1; 305 tf->tf_regs[D0] = 0; 306 tf->tf_regs[D1] = 0; 307 tf->tf_regs[D2] = 0; 308 tf->tf_regs[D3] = 0; 309 tf->tf_regs[D4] = 0; 310 tf->tf_regs[D5] = 0; 311 tf->tf_regs[D6] = 0; 312 tf->tf_regs[D7] = 0; 313 tf->tf_regs[A0] = 0; 314 tf->tf_regs[A1] = 0; 315 tf->tf_regs[A2] = (int)l->l_proc->p_psstr; 316 tf->tf_regs[A3] = 0; 317 tf->tf_regs[A4] = 0; 318 tf->tf_regs[A5] = 0; 319 tf->tf_regs[A6] = 0; 320 tf->tf_regs[SP] = stack; 321 322 /* restore a null state frame */ 323 l->l_addr->u_pcb.pcb_fpregs.fpf_null = 0; 324 if (fputype) 325 m68881_restore(&l->l_addr->u_pcb.pcb_fpregs); 326 327 l->l_md.md_flags = 0; 328 } 329 330 /* 331 * Info for CTL_HW 332 */ 333 char machine[16] = MACHINE; /* from <machine/param.h> */ 334 char kernel_arch[16] = "sun3x"; /* XXX needs a sysctl node */ 335 char cpu_model[120]; 336 337 /* 338 * XXX - Should empirically estimate the divisor... 339 * Note that the value of delay_divisor is roughly 340 * 2048 / cpuclock (where cpuclock is in MHz). 341 */ 342 int delay_divisor = 62; /* assume the fastest (33 MHz) */ 343 344 void 345 identifycpu(void) 346 { 347 u_char machtype; 348 349 machtype = identity_prom.idp_machtype; 350 if ((machtype & IDM_ARCH_MASK) != IDM_ARCH_SUN3X) { 351 printf("Bad IDPROM arch!\n"); 352 sunmon_abort(); 353 } 354 355 cpu_machine_id = machtype; 356 switch (cpu_machine_id) { 357 358 case ID_SUN3X_80: 359 cpu_string = "80"; /* Hydra */ 360 delay_divisor = 102; /* 20 MHz */ 361 cpu_has_vme = false; 362 break; 363 364 case ID_SUN3X_470: 365 cpu_string = "470"; /* Pegasus */ 366 delay_divisor = 62; /* 33 MHz */ 367 cpu_has_vme = true; 368 break; 369 370 default: 371 printf("unknown sun3x model\n"); 372 sunmon_abort(); 373 } 374 375 /* Other stuff? (VAC, mc6888x version, etc.) */ 376 /* Note: miniroot cares about the kernel_arch part. */ 377 sprintf(cpu_model, "%s %s", kernel_arch, cpu_string); 378 379 printf("Model: %s\n", cpu_model); 380 } 381 382 /* 383 * machine dependent system variables. 384 */ 385 #if 0 /* XXX - Not yet... */ 386 static int 387 sysctl_machdep_root_device(SYSCTLFN_ARGS) 388 { 389 struct sysctlnode node = *rnode; 390 391 node.sysctl_data = some permutation on root_device; 392 node.sysctl_size = strlen(root_device) + 1; 393 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 394 } 395 396 static int 397 sysctl_machdep_booted_kernel(SYSCTLFN_ARGS) 398 { 399 struct sysctlnode node = *rnode; 400 401 node.sysctl_data = some permutation on booted_kernel; 402 node.sysctl_size = strlen(booted_kernel) + 1; 403 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 404 } 405 #endif 406 407 SYSCTL_SETUP(sysctl_machdep_setup, "sysctl machdep subtree setup") 408 { 409 410 sysctl_createv(clog, 0, NULL, NULL, 411 CTLFLAG_PERMANENT, 412 CTLTYPE_NODE, "machdep", NULL, 413 NULL, 0, NULL, 0, 414 CTL_MACHDEP, CTL_EOL); 415 416 sysctl_createv(clog, 0, NULL, NULL, 417 CTLFLAG_PERMANENT, 418 CTLTYPE_STRUCT, "console_device", NULL, 419 sysctl_consdev, 0, NULL, sizeof(dev_t), 420 CTL_MACHDEP, CPU_CONSDEV, CTL_EOL); 421 #if 0 /* XXX - Not yet... */ 422 sysctl_createv(clog, 0, NULL, NULL, 423 CTLFLAG_PERMANENT, 424 CTLTYPE_STRING, "root_device", NULL, 425 sysctl_machdep_root_device, 0, NULL, 0, 426 CTL_MACHDEP, CPU_ROOT_DEVICE, CTL_EOL); 427 sysctl_createv(clog, 0, NULL, NULL, 428 CTLFLAG_PERMANENT, 429 CTLTYPE_STRING, "booted_kernel", NULL, 430 sysctl_machdep_booted_kernel, 0, NULL, 0, 431 CTL_MACHDEP, CPU_BOOTED_KERNEL, CTL_EOL); 432 #endif 433 } 434 435 /* See: sig_machdep.c */ 436 437 /* 438 * Do a sync in preparation for a reboot. 439 * XXX - This could probably be common code. 440 * XXX - And now, most of it is in vfs_shutdown() 441 * XXX - Put waittime checks in there too? 442 */ 443 int waittime = -1; /* XXX - Who else looks at this? -gwr */ 444 static void 445 reboot_sync(void) 446 { 447 448 /* Check waittime here to localize its use to this function. */ 449 if (waittime >= 0) 450 return; 451 waittime = 0; 452 vfs_shutdown(); 453 } 454 455 /* 456 * Common part of the BSD and SunOS reboot system calls. 457 */ 458 __dead void 459 cpu_reboot(int howto, char *user_boot_string) 460 { 461 /* Note: this string MUST be static! */ 462 static char bootstr[128]; 463 char *p; 464 465 /* If system is cold, just halt. (early panic?) */ 466 if (cold) 467 goto haltsys; 468 469 /* Un-blank the screen if appropriate. */ 470 cnpollc(1); 471 472 if ((howto & RB_NOSYNC) == 0) { 473 reboot_sync(); 474 /* 475 * If we've been adjusting the clock, the todr 476 * will be out of synch; adjust it now. 477 * 478 * XXX - However, if the kernel has been sitting in ddb, 479 * the time will be way off, so don't set the HW clock! 480 * XXX - Should do sanity check against HW clock. -gwr 481 */ 482 /* resettodr(); */ 483 } 484 485 /* Disable interrupts. */ 486 splhigh(); 487 488 /* Write out a crash dump if asked. */ 489 if (howto & RB_DUMP) 490 dumpsys(); 491 492 /* run any shutdown hooks */ 493 doshutdownhooks(); 494 495 if (howto & RB_HALT) { 496 haltsys: 497 printf("halted.\n"); 498 sunmon_halt(); 499 } 500 501 /* 502 * Automatic reboot. 503 */ 504 if (user_boot_string) 505 strncpy(bootstr, user_boot_string, sizeof(bootstr)); 506 else { 507 /* 508 * Build our own boot string with an empty 509 * boot device/file and (maybe) some flags. 510 * The PROM will supply the device/file name. 511 */ 512 p = bootstr; 513 *p = '\0'; 514 if (howto & (RB_KDB|RB_ASKNAME|RB_SINGLE)) { 515 /* Append the boot flags. */ 516 *p++ = ' '; 517 *p++ = '-'; 518 if (howto & RB_KDB) 519 *p++ = 'd'; 520 if (howto & RB_ASKNAME) 521 *p++ = 'a'; 522 if (howto & RB_SINGLE) 523 *p++ = 's'; 524 *p = '\0'; 525 } 526 } 527 printf("rebooting...\n"); 528 sunmon_reboot(bootstr); 529 for (;;) ; 530 /*NOTREACHED*/ 531 } 532 533 /* 534 * These variables are needed by /sbin/savecore 535 */ 536 uint32_t dumpmag = 0x8fca0101; /* magic number */ 537 int dumpsize = 0; /* pages */ 538 long dumplo = 0; /* blocks */ 539 540 #define DUMP_EXTRA 1 /* CPU-dependent extra pages */ 541 542 /* 543 * This is called by main to set dumplo, dumpsize. 544 * Dumps always skip the first PAGE_SIZE of disk space 545 * in case there might be a disk label stored there. 546 * If there is extra space, put dump at the end to 547 * reduce the chance that swapping trashes it. 548 */ 549 void 550 cpu_dumpconf(void) 551 { 552 const struct bdevsw *bdev; 553 int devblks; /* size of dump device in blocks */ 554 int dumpblks; /* size of dump image in blocks */ 555 int (*getsize)(dev_t); 556 557 if (dumpdev == NODEV) 558 return; 559 560 bdev = bdevsw_lookup(dumpdev); 561 if (bdev == NULL) { 562 dumpdev = NODEV; 563 return; 564 } 565 getsize = bdev->d_psize; 566 if (getsize == NULL) 567 return; 568 devblks = (*getsize)(dumpdev); 569 if (devblks <= ctod(1)) 570 return; 571 devblks &= ~(ctod(1) - 1); 572 573 /* 574 * Note: savecore expects dumpsize to be the 575 * number of pages AFTER the dump header. 576 */ 577 dumpsize = physmem; /* pages */ 578 579 /* Position dump image near end of space, page aligned. */ 580 dumpblks = ctod(physmem + DUMP_EXTRA); 581 dumplo = devblks - dumpblks; 582 583 /* If it does not fit, truncate it by moving dumplo. */ 584 /* Note: Must force signed comparison. */ 585 if (dumplo < ((long)ctod(1))) { 586 dumplo = ctod(1); 587 dumpsize = dtoc(devblks - dumplo) - DUMP_EXTRA; 588 } 589 } 590 591 /* Note: gdb looks for "dumppcb" in a kernel crash dump. */ 592 struct pcb dumppcb; 593 594 /* 595 * Write a crash dump. The format while in swap is: 596 * kcore_seg_t cpu_hdr; 597 * cpu_kcore_hdr_t cpu_data; 598 * padding (PAGE_SIZE-sizeof(kcore_seg_t)) 599 * pagemap (2*PAGE_SIZE) 600 * physical memory... 601 */ 602 void 603 dumpsys(void) 604 { 605 const struct bdevsw *dsw; 606 kcore_seg_t *kseg_p; 607 cpu_kcore_hdr_t *chdr_p; 608 struct sun3x_kcore_hdr *sh; 609 phys_ram_seg_t *crs_p; 610 char *vaddr; 611 paddr_t paddr; 612 int psize, todo, seg, segsz; 613 daddr_t blkno; 614 int error = 0; 615 616 if (dumpdev == NODEV) 617 return; 618 dsw = bdevsw_lookup(dumpdev); 619 if (dsw == NULL || dsw->d_psize == NULL) 620 return; 621 622 /* 623 * For dumps during autoconfiguration, 624 * if dump device has already configured... 625 */ 626 if (dumpsize == 0) 627 cpu_dumpconf(); 628 if (dumplo <= 0) { 629 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 630 minor(dumpdev)); 631 return; 632 } 633 savectx(&dumppcb); 634 635 psize = (*(dsw->d_psize))(dumpdev); 636 if (psize == -1) { 637 printf("dump area unavailable\n"); 638 return; 639 } 640 641 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 642 minor(dumpdev), dumplo); 643 644 /* 645 * Prepare the dump header 646 */ 647 blkno = dumplo; 648 todo = dumpsize; /* pages */ 649 vaddr = (char *)dumppage; 650 memset(vaddr, 0, PAGE_SIZE); 651 652 /* Set pointers to all three parts. */ 653 kseg_p = (kcore_seg_t *)vaddr; 654 chdr_p = (cpu_kcore_hdr_t *)(kseg_p + 1); 655 sh = &chdr_p->un._sun3x; 656 657 /* Fill in kcore_seg_t part. */ 658 CORE_SETMAGIC(*kseg_p, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 659 kseg_p->c_size = (ctob(DUMP_EXTRA) - sizeof(*kseg_p)); 660 661 /* Fill in cpu_kcore_hdr_t part. */ 662 strncpy(chdr_p->name, kernel_arch, sizeof(chdr_p->name)); 663 chdr_p->page_size = PAGE_SIZE; 664 chdr_p->kernbase = KERNBASE; 665 666 /* Fill in the sun3x_kcore_hdr part. */ 667 pmap_kcore_hdr(sh); 668 669 /* Write out the dump header. */ 670 error = (*dsw->d_dump)(dumpdev, blkno, vaddr, PAGE_SIZE); 671 if (error) 672 goto fail; 673 blkno += btodb(PAGE_SIZE); 674 675 /* 676 * Now dump physical memory. Note that physical memory 677 * might NOT be congiguous, so do it by segments. 678 */ 679 680 vaddr = (char *)vmmap; /* Borrow /dev/mem VA */ 681 682 for (seg = 0; seg < SUN3X_NPHYS_RAM_SEGS; seg++) { 683 crs_p = &sh->ram_segs[seg]; 684 paddr = crs_p->start; 685 segsz = crs_p->size; 686 687 while (todo && (segsz > 0)) { 688 689 /* Print pages left after every 16. */ 690 if ((todo & 0xf) == 0) 691 printf("\r%4d", todo); 692 693 /* Make a temporary mapping for the page. */ 694 pmap_kenter_pa(vmmap, paddr | PMAP_NC, VM_PROT_READ); 695 pmap_update(pmap_kernel()); 696 error = (*dsw->d_dump)(dumpdev, blkno, vaddr, 697 PAGE_SIZE); 698 pmap_kremove(vmmap, PAGE_SIZE); 699 pmap_update(pmap_kernel()); 700 if (error) 701 goto fail; 702 paddr += PAGE_SIZE; 703 segsz -= PAGE_SIZE; 704 blkno += btodb(PAGE_SIZE); 705 todo--; 706 } 707 } 708 printf("\rdump succeeded\n"); 709 return; 710 fail: 711 printf(" dump error=%d\n", error); 712 } 713 714 static void 715 initcpu(void) 716 { 717 /* XXX: Enable RAM parity/ECC checking? */ 718 /* XXX: parityenable(); */ 719 720 #ifdef HAVECACHE 721 cache_enable(); 722 #endif 723 } 724 725 /* straptrap() in trap.c */ 726 727 /* from hp300: badaddr() */ 728 /* peek_byte(), peek_word() moved to bus_subr.c */ 729 730 /* XXX: parityenable() ? */ 731 /* regdump() moved to regdump.c */ 732 733 /* 734 * cpu_exec_aout_makecmds(): 735 * CPU-dependent a.out format hook for execve(). 736 * 737 * Determine if the given exec package refers to something which we 738 * understand and, if so, set up the vmcmds for it. 739 */ 740 int 741 cpu_exec_aout_makecmds(struct lwp *l, struct exec_package *epp) 742 { 743 return ENOEXEC; 744 } 745