machdep.c revision 1.211
1 /* $NetBSD: machdep.c,v 1.211 2000/06/03 20:47:37 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center and by Chris G. Demetriou. 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. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. 42 * All rights reserved. 43 * 44 * Author: Chris G. Demetriou 45 * 46 * Permission to use, copy, modify and distribute this software and 47 * its documentation is hereby granted, provided that both the copyright 48 * notice and this permission notice appear in all copies of the 49 * software, derivative works or modified versions, and any portions 50 * thereof, and that both notices appear in supporting documentation. 51 * 52 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 53 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 54 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 55 * 56 * Carnegie Mellon requests users of this software to return to 57 * 58 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 59 * School of Computer Science 60 * Carnegie Mellon University 61 * Pittsburgh PA 15213-3890 62 * 63 * any improvements or extensions that they make and grant Carnegie the 64 * rights to redistribute these changes. 65 */ 66 67 #include "opt_ddb.h" 68 #include "opt_multiprocessor.h" 69 #include "opt_dec_3000_300.h" 70 #include "opt_dec_3000_500.h" 71 #include "opt_compat_osf1.h" 72 #include "opt_compat_netbsd.h" 73 74 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 75 76 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.211 2000/06/03 20:47:37 thorpej Exp $"); 77 78 #include <sys/param.h> 79 #include <sys/systm.h> 80 #include <sys/signalvar.h> 81 #include <sys/kernel.h> 82 #include <sys/map.h> 83 #include <sys/proc.h> 84 #include <sys/sched.h> 85 #include <sys/buf.h> 86 #include <sys/reboot.h> 87 #include <sys/device.h> 88 #include <sys/file.h> 89 #include <sys/malloc.h> 90 #include <sys/mbuf.h> 91 #include <sys/mman.h> 92 #include <sys/msgbuf.h> 93 #include <sys/ioctl.h> 94 #include <sys/tty.h> 95 #include <sys/user.h> 96 #include <sys/exec.h> 97 #include <sys/exec_ecoff.h> 98 #include <vm/vm.h> 99 #include <sys/sysctl.h> 100 #include <sys/core.h> 101 #include <sys/kcore.h> 102 #include <machine/kcore.h> 103 104 #include <sys/mount.h> 105 #include <sys/syscallargs.h> 106 107 #include <vm/vm_kern.h> 108 109 #include <uvm/uvm_extern.h> 110 111 #include <dev/cons.h> 112 113 #include <machine/autoconf.h> 114 #include <machine/cpu.h> 115 #include <machine/reg.h> 116 #include <machine/rpb.h> 117 #include <machine/prom.h> 118 #include <machine/conf.h> 119 #include <machine/ieeefp.h> 120 121 #ifdef DDB 122 #include <machine/db_machdep.h> 123 #include <ddb/db_access.h> 124 #include <ddb/db_sym.h> 125 #include <ddb/db_extern.h> 126 #include <ddb/db_interface.h> 127 #endif 128 129 #include <machine/alpha.h> 130 #include <machine/intrcnt.h> 131 132 #include "com.h" 133 #if NCOM > 0 134 extern void comsoft __P((void)); 135 #endif 136 #include "zsc_ioasic.h" 137 #if NZSC_IOASIC > 0 138 extern void zs_ioasic_softintr __P((void)); 139 #endif 140 141 vm_map_t exec_map = NULL; 142 vm_map_t mb_map = NULL; 143 vm_map_t phys_map = NULL; 144 145 caddr_t msgbufaddr; 146 147 int maxmem; /* max memory per process */ 148 149 int totalphysmem; /* total amount of physical memory in system */ 150 int physmem; /* physical memory used by NetBSD + some rsvd */ 151 int resvmem; /* amount of memory reserved for PROM */ 152 int unusedmem; /* amount of memory for OS that we don't use */ 153 int unknownmem; /* amount of memory with an unknown use */ 154 155 int cputype; /* system type, from the RPB */ 156 157 int bootdev_debug = 0; /* patchable, or from DDB */ 158 159 /* 160 * XXX We need an address to which we can assign things so that they 161 * won't be optimized away because we didn't use the value. 162 */ 163 u_int32_t no_optimize; 164 165 /* the following is used externally (sysctl_hw) */ 166 char machine[] = MACHINE; /* from <machine/param.h> */ 167 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 168 char cpu_model[128]; 169 170 struct user *proc0paddr; 171 172 /* Number of machine cycles per microsecond */ 173 u_int64_t cycles_per_usec; 174 175 /* number of cpus in the box. really! */ 176 int ncpus; 177 178 struct bootinfo_kernel bootinfo; 179 180 /* For built-in TCDS */ 181 #if defined(DEC_3000_300) || defined(DEC_3000_500) 182 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 183 #endif 184 185 struct platform platform; 186 187 #ifdef DDB 188 /* start and end of kernel symbol table */ 189 void *ksym_start, *ksym_end; 190 #endif 191 192 /* for cpu_sysctl() */ 193 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 194 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 195 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 196 197 /* 198 * XXX This should be dynamically sized, but we have the chicken-egg problem! 199 * XXX it should also be larger than it is, because not all of the mddt 200 * XXX clusters end up being used for VM. 201 */ 202 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 203 int mem_cluster_cnt; 204 205 int cpu_dump __P((void)); 206 int cpu_dumpsize __P((void)); 207 u_long cpu_dump_mempagecnt __P((void)); 208 void dumpsys __P((void)); 209 void identifycpu __P((void)); 210 void printregs __P((struct reg *)); 211 212 void 213 alpha_init(pfn, ptb, bim, bip, biv) 214 u_long pfn; /* first free PFN number */ 215 u_long ptb; /* PFN of current level 1 page table */ 216 u_long bim; /* bootinfo magic */ 217 u_long bip; /* bootinfo pointer */ 218 u_long biv; /* bootinfo version */ 219 { 220 extern char kernel_text[], _end[]; 221 struct mddt *mddtp; 222 struct mddt_cluster *memc; 223 int i, mddtweird; 224 struct vm_physseg *vps; 225 vaddr_t kernstart, kernend; 226 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 227 vsize_t size; 228 cpuid_t cpu_id; 229 struct cpu_info *ci; 230 char *p; 231 caddr_t v; 232 const char *bootinfo_msg; 233 const struct cpuinit *c; 234 235 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 236 237 /* 238 * Turn off interrupts (not mchecks) and floating point. 239 * Make sure the instruction and data streams are consistent. 240 */ 241 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 242 alpha_pal_wrfen(0); 243 ALPHA_TBIA(); 244 alpha_pal_imb(); 245 246 cpu_id = cpu_number(); 247 248 #if defined(MULTIPROCESSOR) 249 /* 250 * Set our SysValue to the address of our cpu_info structure. 251 * Secondary processors do this in their spinup trampoline. 252 */ 253 alpha_pal_wrval((u_long)&cpu_info[cpu_id]); 254 #endif 255 256 ci = curcpu(); 257 ci->ci_cpuid = cpu_id; 258 259 /* 260 * Get critical system information (if possible, from the 261 * information provided by the boot program). 262 */ 263 bootinfo_msg = NULL; 264 if (bim == BOOTINFO_MAGIC) { 265 if (biv == 0) { /* backward compat */ 266 biv = *(u_long *)bip; 267 bip += 8; 268 } 269 switch (biv) { 270 case 1: { 271 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 272 273 bootinfo.ssym = v1p->ssym; 274 bootinfo.esym = v1p->esym; 275 /* hwrpb may not be provided by boot block in v1 */ 276 if (v1p->hwrpb != NULL) { 277 bootinfo.hwrpb_phys = 278 ((struct rpb *)v1p->hwrpb)->rpb_phys; 279 bootinfo.hwrpb_size = v1p->hwrpbsize; 280 } else { 281 bootinfo.hwrpb_phys = 282 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 283 bootinfo.hwrpb_size = 284 ((struct rpb *)HWRPB_ADDR)->rpb_size; 285 } 286 bcopy(v1p->boot_flags, bootinfo.boot_flags, 287 min(sizeof v1p->boot_flags, 288 sizeof bootinfo.boot_flags)); 289 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 290 min(sizeof v1p->booted_kernel, 291 sizeof bootinfo.booted_kernel)); 292 /* booted dev not provided in bootinfo */ 293 init_prom_interface((struct rpb *) 294 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 295 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 296 sizeof bootinfo.booted_dev); 297 break; 298 } 299 default: 300 bootinfo_msg = "unknown bootinfo version"; 301 goto nobootinfo; 302 } 303 } else { 304 bootinfo_msg = "boot program did not pass bootinfo"; 305 nobootinfo: 306 bootinfo.ssym = (u_long)_end; 307 bootinfo.esym = (u_long)_end; 308 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 309 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 310 init_prom_interface((struct rpb *)HWRPB_ADDR); 311 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 312 sizeof bootinfo.boot_flags); 313 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 314 sizeof bootinfo.booted_kernel); 315 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 316 sizeof bootinfo.booted_dev); 317 } 318 319 /* 320 * Initialize the kernel's mapping of the RPB. It's needed for 321 * lots of things. 322 */ 323 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 324 325 #if defined(DEC_3000_300) || defined(DEC_3000_500) 326 if (hwrpb->rpb_type == ST_DEC_3000_300 || 327 hwrpb->rpb_type == ST_DEC_3000_500) { 328 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 329 sizeof(dec_3000_scsiid)); 330 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 331 sizeof(dec_3000_scsifast)); 332 } 333 #endif 334 335 /* 336 * Remember how many cycles there are per microsecond, 337 * so that we can use delay(). Round up, for safety. 338 */ 339 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 340 341 /* 342 * Initalize the (temporary) bootstrap console interface, so 343 * we can use printf until the VM system starts being setup. 344 * The real console is initialized before then. 345 */ 346 init_bootstrap_console(); 347 348 /* OUTPUT NOW ALLOWED */ 349 350 /* delayed from above */ 351 if (bootinfo_msg) 352 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 353 bootinfo_msg, bim, bip, biv); 354 355 /* Initialize the trap vectors on the primary processor. */ 356 trap_init(); 357 358 /* 359 * Find out what hardware we're on, and do basic initialization. 360 */ 361 cputype = hwrpb->rpb_type; 362 if (cputype < 0) { 363 /* 364 * At least some white-box systems have SRM which 365 * reports a systype that's the negative of their 366 * blue-box counterpart. 367 */ 368 cputype = -cputype; 369 } 370 c = platform_lookup(cputype); 371 if (c == NULL) { 372 platform_not_supported(); 373 /* NOTREACHED */ 374 } 375 (*c->init)(); 376 strcpy(cpu_model, platform.model); 377 378 /* 379 * Initalize the real console, so that the bootstrap console is 380 * no longer necessary. 381 */ 382 (*platform.cons_init)(); 383 384 #ifdef DIAGNOSTIC 385 /* Paranoid sanity checking */ 386 387 /* We should always be running on the primary. */ 388 assert(hwrpb->rpb_primary_cpu_id == cpu_id); 389 390 /* 391 * On single-CPU systypes, the primary should always be CPU 0, 392 * except on Alpha 8200 systems where the CPU id is related 393 * to the VID, which is related to the Turbo Laser node id. 394 */ 395 if (cputype != ST_DEC_21000) 396 assert(hwrpb->rpb_primary_cpu_id == 0); 397 #endif 398 399 /* NO MORE FIRMWARE ACCESS ALLOWED */ 400 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 401 /* 402 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 403 * XXX pmap_uses_prom_console() evaluates to non-zero.) 404 */ 405 #endif 406 407 /* 408 * find out this system's page size 409 */ 410 PAGE_SIZE = hwrpb->rpb_page_size; 411 if (PAGE_SIZE != 8192) 412 panic("page size %d != 8192?!", PAGE_SIZE); 413 414 /* 415 * Initialize PAGE_SIZE-dependent variables. 416 */ 417 uvm_setpagesize(); 418 419 /* 420 * Find the beginning and end of the kernel (and leave a 421 * bit of space before the beginning for the bootstrap 422 * stack). 423 */ 424 kernstart = trunc_page((vaddr_t)kernel_text) - 2 * PAGE_SIZE; 425 #ifdef DDB 426 ksym_start = (void *)bootinfo.ssym; 427 ksym_end = (void *)bootinfo.esym; 428 kernend = (vaddr_t)round_page((vaddr_t)ksym_end); 429 #else 430 kernend = (vaddr_t)round_page((vaddr_t)_end); 431 #endif 432 433 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 434 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 435 436 /* 437 * Find out how much memory is available, by looking at 438 * the memory cluster descriptors. This also tries to do 439 * its best to detect things things that have never been seen 440 * before... 441 */ 442 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 443 444 /* MDDT SANITY CHECKING */ 445 mddtweird = 0; 446 if (mddtp->mddt_cluster_cnt < 2) { 447 mddtweird = 1; 448 printf("WARNING: weird number of mem clusters: %lu\n", 449 mddtp->mddt_cluster_cnt); 450 } 451 452 #if 0 453 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 454 #endif 455 456 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 457 memc = &mddtp->mddt_clusters[i]; 458 #if 0 459 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 460 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 461 #endif 462 totalphysmem += memc->mddt_pg_cnt; 463 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 464 mem_clusters[mem_cluster_cnt].start = 465 ptoa(memc->mddt_pfn); 466 mem_clusters[mem_cluster_cnt].size = 467 ptoa(memc->mddt_pg_cnt); 468 if (memc->mddt_usage & MDDT_mbz || 469 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 470 memc->mddt_usage & MDDT_PALCODE) 471 mem_clusters[mem_cluster_cnt].size |= 472 PROT_READ; 473 else 474 mem_clusters[mem_cluster_cnt].size |= 475 PROT_READ | PROT_WRITE | PROT_EXEC; 476 mem_cluster_cnt++; 477 } 478 479 if (memc->mddt_usage & MDDT_mbz) { 480 mddtweird = 1; 481 printf("WARNING: mem cluster %d has weird " 482 "usage 0x%lx\n", i, memc->mddt_usage); 483 unknownmem += memc->mddt_pg_cnt; 484 continue; 485 } 486 if (memc->mddt_usage & MDDT_NONVOLATILE) { 487 /* XXX should handle these... */ 488 printf("WARNING: skipping non-volatile mem " 489 "cluster %d\n", i); 490 unusedmem += memc->mddt_pg_cnt; 491 continue; 492 } 493 if (memc->mddt_usage & MDDT_PALCODE) { 494 resvmem += memc->mddt_pg_cnt; 495 continue; 496 } 497 498 /* 499 * We have a memory cluster available for system 500 * software use. We must determine if this cluster 501 * holds the kernel. 502 */ 503 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 504 /* 505 * XXX If the kernel uses the PROM console, we only use the 506 * XXX memory after the kernel in the first system segment, 507 * XXX to avoid clobbering prom mapping, data, etc. 508 */ 509 if (!pmap_uses_prom_console() || physmem == 0) { 510 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 511 physmem += memc->mddt_pg_cnt; 512 pfn0 = memc->mddt_pfn; 513 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 514 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 515 /* 516 * Must compute the location of the kernel 517 * within the segment. 518 */ 519 #if 0 520 printf("Cluster %d contains kernel\n", i); 521 #endif 522 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 523 if (!pmap_uses_prom_console()) { 524 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 525 if (pfn0 < kernstartpfn) { 526 /* 527 * There is a chunk before the kernel. 528 */ 529 #if 0 530 printf("Loading chunk before kernel: " 531 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 532 #endif 533 uvm_page_physload(pfn0, kernstartpfn, 534 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 535 } 536 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 537 } 538 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 539 if (kernendpfn < pfn1) { 540 /* 541 * There is a chunk after the kernel. 542 */ 543 #if 0 544 printf("Loading chunk after kernel: " 545 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 546 #endif 547 uvm_page_physload(kernendpfn, pfn1, 548 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 549 } 550 } else { 551 /* 552 * Just load this cluster as one chunk. 553 */ 554 #if 0 555 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 556 pfn0, pfn1); 557 #endif 558 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 559 VM_FREELIST_DEFAULT); 560 } 561 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 562 } 563 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 564 } 565 566 /* 567 * Dump out the MDDT if it looks odd... 568 */ 569 if (mddtweird) { 570 printf("\n"); 571 printf("complete memory cluster information:\n"); 572 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 573 printf("mddt %d:\n", i); 574 printf("\tpfn %lx\n", 575 mddtp->mddt_clusters[i].mddt_pfn); 576 printf("\tcnt %lx\n", 577 mddtp->mddt_clusters[i].mddt_pg_cnt); 578 printf("\ttest %lx\n", 579 mddtp->mddt_clusters[i].mddt_pg_test); 580 printf("\tbva %lx\n", 581 mddtp->mddt_clusters[i].mddt_v_bitaddr); 582 printf("\tbpa %lx\n", 583 mddtp->mddt_clusters[i].mddt_p_bitaddr); 584 printf("\tbcksum %lx\n", 585 mddtp->mddt_clusters[i].mddt_bit_cksum); 586 printf("\tusage %lx\n", 587 mddtp->mddt_clusters[i].mddt_usage); 588 } 589 printf("\n"); 590 } 591 592 if (totalphysmem == 0) 593 panic("can't happen: system seems to have no memory!"); 594 maxmem = physmem; 595 #if 0 596 printf("totalphysmem = %d\n", totalphysmem); 597 printf("physmem = %d\n", physmem); 598 printf("resvmem = %d\n", resvmem); 599 printf("unusedmem = %d\n", unusedmem); 600 printf("unknownmem = %d\n", unknownmem); 601 #endif 602 603 /* 604 * Initialize error message buffer (at end of core). 605 */ 606 { 607 vsize_t sz = (vsize_t)round_page(MSGBUFSIZE); 608 vsize_t reqsz = sz; 609 610 vps = &vm_physmem[vm_nphysseg - 1]; 611 612 /* shrink so that it'll fit in the last segment */ 613 if ((vps->avail_end - vps->avail_start) < atop(sz)) 614 sz = ptoa(vps->avail_end - vps->avail_start); 615 616 vps->end -= atop(sz); 617 vps->avail_end -= atop(sz); 618 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 619 initmsgbuf(msgbufaddr, sz); 620 621 /* Remove the last segment if it now has no pages. */ 622 if (vps->start == vps->end) 623 vm_nphysseg--; 624 625 /* warn if the message buffer had to be shrunk */ 626 if (sz != reqsz) 627 printf("WARNING: %ld bytes not available for msgbuf " 628 "in last cluster (%ld used)\n", reqsz, sz); 629 630 } 631 632 /* 633 * Init mapping for u page(s) for proc 0 634 */ 635 proc0.p_addr = proc0paddr = 636 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 637 638 /* 639 * Allocate space for system data structures. These data structures 640 * are allocated here instead of cpu_startup() because physical 641 * memory is directly addressable. We don't have to map these into 642 * virtual address space. 643 */ 644 size = (vsize_t)allocsys(NULL, NULL); 645 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 646 if ((allocsys(v, NULL) - v) != size) 647 panic("alpha_init: table size inconsistency"); 648 649 /* 650 * Initialize the virtual memory system, and set the 651 * page table base register in proc 0's PCB. 652 */ 653 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 654 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 655 656 /* 657 * Initialize the rest of proc 0's PCB, and cache its physical 658 * address. 659 */ 660 proc0.p_md.md_pcbpaddr = 661 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 662 663 /* 664 * Set the kernel sp, reserving space for an (empty) trapframe, 665 * and make proc0's trapframe pointer point to it for sanity. 666 */ 667 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 668 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 669 proc0.p_md.md_tf = 670 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 671 672 /* 673 * Initialize the primary CPU's idle PCB to proc0's. In a 674 * MULTIPROCESSOR configuration, each CPU will later get 675 * its own idle PCB when autoconfiguration runs. 676 */ 677 ci->ci_idle_pcb = &proc0paddr->u_pcb; 678 ci->ci_idle_pcb_paddr = (u_long)proc0.p_md.md_pcbpaddr; 679 680 /* Indicate that proc0 has a CPU. */ 681 proc0.p_cpu = ci; 682 683 /* 684 * Look at arguments passed to us and compute boothowto. 685 */ 686 687 boothowto = RB_SINGLE; 688 #ifdef KADB 689 boothowto |= RB_KDB; 690 #endif 691 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 692 /* 693 * Note that we'd really like to differentiate case here, 694 * but the Alpha AXP Architecture Reference Manual 695 * says that we shouldn't. 696 */ 697 switch (*p) { 698 case 'a': /* autoboot */ 699 case 'A': 700 boothowto &= ~RB_SINGLE; 701 break; 702 703 #ifdef DEBUG 704 case 'c': /* crash dump immediately after autoconfig */ 705 case 'C': 706 boothowto |= RB_DUMP; 707 break; 708 #endif 709 710 #if defined(KGDB) || defined(DDB) 711 case 'd': /* break into the kernel debugger ASAP */ 712 case 'D': 713 boothowto |= RB_KDB; 714 break; 715 #endif 716 717 case 'h': /* always halt, never reboot */ 718 case 'H': 719 boothowto |= RB_HALT; 720 break; 721 722 #if 0 723 case 'm': /* mini root present in memory */ 724 case 'M': 725 boothowto |= RB_MINIROOT; 726 break; 727 #endif 728 729 case 'n': /* askname */ 730 case 'N': 731 boothowto |= RB_ASKNAME; 732 break; 733 734 case 's': /* single-user (default, supported for sanity) */ 735 case 'S': 736 boothowto |= RB_SINGLE; 737 break; 738 739 case '-': 740 /* 741 * Just ignore this. It's not required, but it's 742 * common for it to be passed regardless. 743 */ 744 break; 745 746 default: 747 printf("Unrecognized boot flag '%c'.\n", *p); 748 break; 749 } 750 } 751 752 753 /* 754 * Figure out the number of cpus in the box, from RPB fields. 755 * Really. We mean it. 756 */ 757 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 758 struct pcs *pcsp; 759 760 pcsp = LOCATE_PCS(hwrpb, i); 761 if ((pcsp->pcs_flags & PCS_PP) != 0) 762 ncpus++; 763 } 764 765 /* 766 * Initialize debuggers, and break into them if appropriate. 767 */ 768 #ifdef DDB 769 db_machine_init(); 770 ddb_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 771 ksym_start, ksym_end); 772 if (boothowto & RB_KDB) 773 Debugger(); 774 #endif 775 #ifdef KGDB 776 if (boothowto & RB_KDB) 777 kgdb_connect(0); 778 #endif 779 /* 780 * Figure out our clock frequency, from RPB fields. 781 */ 782 hz = hwrpb->rpb_intr_freq >> 12; 783 if (!(60 <= hz && hz <= 10240)) { 784 hz = 1024; 785 #ifdef DIAGNOSTIC 786 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 787 hwrpb->rpb_intr_freq, hz); 788 #endif 789 } 790 } 791 792 void 793 consinit() 794 { 795 796 /* 797 * Everything related to console initialization is done 798 * in alpha_init(). 799 */ 800 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 801 printf("consinit: %susing prom console\n", 802 pmap_uses_prom_console() ? "" : "not "); 803 #endif 804 } 805 806 #include "pckbc.h" 807 #include "pckbd.h" 808 #if (NPCKBC > 0) && (NPCKBD == 0) 809 810 #include <dev/ic/pckbcvar.h> 811 812 /* 813 * This is called by the pbkbc driver if no pckbd is configured. 814 * On the i386, it is used to glue in the old, deprecated console 815 * code. On the Alpha, it does nothing. 816 */ 817 int 818 pckbc_machdep_cnattach(kbctag, kbcslot) 819 pckbc_tag_t kbctag; 820 pckbc_slot_t kbcslot; 821 { 822 823 return (ENXIO); 824 } 825 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 826 827 void 828 cpu_startup() 829 { 830 register unsigned i; 831 int base, residual; 832 vaddr_t minaddr, maxaddr; 833 vsize_t size; 834 char pbuf[9]; 835 #if defined(DEBUG) 836 extern int pmapdebug; 837 int opmapdebug = pmapdebug; 838 839 pmapdebug = 0; 840 #endif 841 842 /* 843 * Good {morning,afternoon,evening,night}. 844 */ 845 printf(version); 846 identifycpu(); 847 format_bytes(pbuf, sizeof(pbuf), ptoa(totalphysmem)); 848 printf("total memory = %s\n", pbuf); 849 format_bytes(pbuf, sizeof(pbuf), ptoa(resvmem)); 850 printf("(%s reserved for PROM, ", pbuf); 851 format_bytes(pbuf, sizeof(pbuf), ptoa(physmem)); 852 printf("%s used by NetBSD)\n", pbuf); 853 if (unusedmem) { 854 format_bytes(pbuf, sizeof(pbuf), ptoa(unusedmem)); 855 printf("WARNING: unused memory = %s\n", pbuf); 856 } 857 if (unknownmem) { 858 format_bytes(pbuf, sizeof(pbuf), ptoa(unknownmem)); 859 printf("WARNING: %s of memory with unknown purpose\n", pbuf); 860 } 861 862 /* 863 * Allocate virtual address space for file I/O buffers. 864 * Note they are different than the array of headers, 'buf', 865 * and usually occupy more virtual memory than physical. 866 */ 867 size = MAXBSIZE * nbuf; 868 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 869 NULL, UVM_UNKNOWN_OFFSET, 870 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 871 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 872 panic("startup: cannot allocate VM for buffers"); 873 base = bufpages / nbuf; 874 residual = bufpages % nbuf; 875 for (i = 0; i < nbuf; i++) { 876 vsize_t curbufsize; 877 vaddr_t curbuf; 878 struct vm_page *pg; 879 880 /* 881 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 882 * that MAXBSIZE space, we allocate and map (base+1) pages 883 * for the first "residual" buffers, and then we allocate 884 * "base" pages for the rest. 885 */ 886 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 887 curbufsize = NBPG * ((i < residual) ? (base+1) : base); 888 889 while (curbufsize) { 890 pg = uvm_pagealloc(NULL, 0, NULL, 0); 891 if (pg == NULL) 892 panic("cpu_startup: not enough memory for " 893 "buffer cache"); 894 pmap_kenter_pa(curbuf, VM_PAGE_TO_PHYS(pg), 895 VM_PROT_READ|VM_PROT_WRITE); 896 curbuf += PAGE_SIZE; 897 curbufsize -= PAGE_SIZE; 898 } 899 } 900 /* 901 * Allocate a submap for exec arguments. This map effectively 902 * limits the number of processes exec'ing at any time. 903 */ 904 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 905 16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 906 907 /* 908 * Allocate a submap for physio 909 */ 910 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 911 VM_PHYS_SIZE, 0, FALSE, NULL); 912 913 /* 914 * No need to allocate an mbuf cluster submap. Mbuf clusters 915 * are allocated via the pool allocator, and we use K0SEG to 916 * map those pages. 917 */ 918 919 #if defined(DEBUG) 920 pmapdebug = opmapdebug; 921 #endif 922 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 923 printf("avail memory = %s\n", pbuf); 924 #if 0 925 { 926 extern u_long pmap_pages_stolen; 927 928 format_bytes(pbuf, sizeof(pbuf), pmap_pages_stolen * PAGE_SIZE); 929 printf("stolen memory for VM structures = %s\n", pbuf); 930 } 931 #endif 932 format_bytes(pbuf, sizeof(pbuf), bufpages * NBPG); 933 printf("using %ld buffers containing %s of memory\n", (long)nbuf, pbuf); 934 935 /* 936 * Set up buffers, so they can be used to read disk labels. 937 */ 938 bufinit(); 939 940 /* 941 * Set up the HWPCB so that it's safe to configure secondary 942 * CPUs. 943 */ 944 hwrpb_primary_init(); 945 } 946 947 /* 948 * Retrieve the platform name from the DSR. 949 */ 950 const char * 951 alpha_dsr_sysname() 952 { 953 struct dsrdb *dsr; 954 const char *sysname; 955 956 /* 957 * DSR does not exist on early HWRPB versions. 958 */ 959 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 960 return (NULL); 961 962 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 963 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 964 sizeof(u_int64_t))); 965 return (sysname); 966 } 967 968 /* 969 * Lookup the system specified system variation in the provided table, 970 * returning the model string on match. 971 */ 972 const char * 973 alpha_variation_name(variation, avtp) 974 u_int64_t variation; 975 const struct alpha_variation_table *avtp; 976 { 977 int i; 978 979 for (i = 0; avtp[i].avt_model != NULL; i++) 980 if (avtp[i].avt_variation == variation) 981 return (avtp[i].avt_model); 982 return (NULL); 983 } 984 985 /* 986 * Generate a default platform name based for unknown system variations. 987 */ 988 const char * 989 alpha_unknown_sysname() 990 { 991 static char s[128]; /* safe size */ 992 993 sprintf(s, "%s family, unknown model variation 0x%lx", 994 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 995 return ((const char *)s); 996 } 997 998 void 999 identifycpu() 1000 { 1001 char *s; 1002 1003 /* 1004 * print out CPU identification information. 1005 */ 1006 printf("%s", cpu_model); 1007 for(s = cpu_model; *s; ++s) 1008 if(strncasecmp(s, "MHz", 3) == 0) 1009 goto skipMHz; 1010 printf(", %ldMHz", hwrpb->rpb_cc_freq / 1000000); 1011 skipMHz: 1012 printf("\n"); 1013 printf("%ld byte page size, %d processor%s.\n", 1014 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1015 #if 0 1016 /* this isn't defined for any systems that we run on? */ 1017 printf("serial number 0x%lx 0x%lx\n", 1018 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1019 1020 /* and these aren't particularly useful! */ 1021 printf("variation: 0x%lx, revision 0x%lx\n", 1022 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1023 #endif 1024 } 1025 1026 int waittime = -1; 1027 struct pcb dumppcb; 1028 1029 void 1030 cpu_reboot(howto, bootstr) 1031 int howto; 1032 char *bootstr; 1033 { 1034 #if defined(MULTIPROCESSOR) 1035 #if 0 /* XXX See below. */ 1036 u_long cpu_id; 1037 #endif 1038 #endif 1039 1040 #if defined(MULTIPROCESSOR) 1041 /* We must be running on the primary CPU. */ 1042 if (alpha_pal_whami() != hwrpb->rpb_primary_cpu_id) 1043 panic("cpu_reboot: not on primary CPU!"); 1044 #endif 1045 1046 /* If system is cold, just halt. */ 1047 if (cold) { 1048 howto |= RB_HALT; 1049 goto haltsys; 1050 } 1051 1052 /* If "always halt" was specified as a boot flag, obey. */ 1053 if ((boothowto & RB_HALT) != 0) 1054 howto |= RB_HALT; 1055 1056 boothowto = howto; 1057 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1058 waittime = 0; 1059 vfs_shutdown(); 1060 /* 1061 * If we've been adjusting the clock, the todr 1062 * will be out of synch; adjust it now. 1063 */ 1064 resettodr(); 1065 } 1066 1067 /* Disable interrupts. */ 1068 splhigh(); 1069 1070 /* If rebooting and a dump is requested do it. */ 1071 #if 0 1072 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1073 #else 1074 if (howto & RB_DUMP) 1075 #endif 1076 dumpsys(); 1077 1078 haltsys: 1079 1080 /* run any shutdown hooks */ 1081 doshutdownhooks(); 1082 1083 #if defined(MULTIPROCESSOR) 1084 #if 0 /* XXX doesn't work when called from here?! */ 1085 /* Kill off any secondary CPUs. */ 1086 for (cpu_id = 0; cpu_id < hwrpb->rpb_pcs_cnt; cpu_id++) { 1087 if (cpu_id == hwrpb->rpb_primary_cpu_id || 1088 cpu_info[cpu_id].ci_softc == NULL) 1089 continue; 1090 cpu_halt_secondary(cpu_id); 1091 } 1092 #endif 1093 #endif 1094 1095 #ifdef BOOTKEY 1096 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1097 cnpollc(1); /* for proper keyboard command handling */ 1098 cngetc(); 1099 cnpollc(0); 1100 printf("\n"); 1101 #endif 1102 1103 /* Finally, powerdown/halt/reboot the system. */ 1104 if ((howto & RB_POWERDOWN) == RB_POWERDOWN && 1105 platform.powerdown != NULL) { 1106 (*platform.powerdown)(); 1107 printf("WARNING: powerdown failed!\n"); 1108 } 1109 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1110 prom_halt(howto & RB_HALT); 1111 /*NOTREACHED*/ 1112 } 1113 1114 /* 1115 * These variables are needed by /sbin/savecore 1116 */ 1117 u_long dumpmag = 0x8fca0101; /* magic number */ 1118 int dumpsize = 0; /* pages */ 1119 long dumplo = 0; /* blocks */ 1120 1121 /* 1122 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1123 */ 1124 int 1125 cpu_dumpsize() 1126 { 1127 int size; 1128 1129 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1130 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1131 if (roundup(size, dbtob(1)) != dbtob(1)) 1132 return -1; 1133 1134 return (1); 1135 } 1136 1137 /* 1138 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1139 */ 1140 u_long 1141 cpu_dump_mempagecnt() 1142 { 1143 u_long i, n; 1144 1145 n = 0; 1146 for (i = 0; i < mem_cluster_cnt; i++) 1147 n += atop(mem_clusters[i].size); 1148 return (n); 1149 } 1150 1151 /* 1152 * cpu_dump: dump machine-dependent kernel core dump headers. 1153 */ 1154 int 1155 cpu_dump() 1156 { 1157 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1158 char buf[dbtob(1)]; 1159 kcore_seg_t *segp; 1160 cpu_kcore_hdr_t *cpuhdrp; 1161 phys_ram_seg_t *memsegp; 1162 int i; 1163 1164 dump = bdevsw[major(dumpdev)].d_dump; 1165 1166 bzero(buf, sizeof buf); 1167 segp = (kcore_seg_t *)buf; 1168 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1169 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1170 ALIGN(sizeof(*cpuhdrp))]; 1171 1172 /* 1173 * Generate a segment header. 1174 */ 1175 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1176 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1177 1178 /* 1179 * Add the machine-dependent header info. 1180 */ 1181 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1182 cpuhdrp->page_size = PAGE_SIZE; 1183 cpuhdrp->nmemsegs = mem_cluster_cnt; 1184 1185 /* 1186 * Fill in the memory segment descriptors. 1187 */ 1188 for (i = 0; i < mem_cluster_cnt; i++) { 1189 memsegp[i].start = mem_clusters[i].start; 1190 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1191 } 1192 1193 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1194 } 1195 1196 /* 1197 * This is called by main to set dumplo and dumpsize. 1198 * Dumps always skip the first NBPG of disk space 1199 * in case there might be a disk label stored there. 1200 * If there is extra space, put dump at the end to 1201 * reduce the chance that swapping trashes it. 1202 */ 1203 void 1204 cpu_dumpconf() 1205 { 1206 int nblks, dumpblks; /* size of dump area */ 1207 int maj; 1208 1209 if (dumpdev == NODEV) 1210 goto bad; 1211 maj = major(dumpdev); 1212 if (maj < 0 || maj >= nblkdev) 1213 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1214 if (bdevsw[maj].d_psize == NULL) 1215 goto bad; 1216 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1217 if (nblks <= ctod(1)) 1218 goto bad; 1219 1220 dumpblks = cpu_dumpsize(); 1221 if (dumpblks < 0) 1222 goto bad; 1223 dumpblks += ctod(cpu_dump_mempagecnt()); 1224 1225 /* If dump won't fit (incl. room for possible label), punt. */ 1226 if (dumpblks > (nblks - ctod(1))) 1227 goto bad; 1228 1229 /* Put dump at end of partition */ 1230 dumplo = nblks - dumpblks; 1231 1232 /* dumpsize is in page units, and doesn't include headers. */ 1233 dumpsize = cpu_dump_mempagecnt(); 1234 return; 1235 1236 bad: 1237 dumpsize = 0; 1238 return; 1239 } 1240 1241 /* 1242 * Dump the kernel's image to the swap partition. 1243 */ 1244 #define BYTES_PER_DUMP NBPG 1245 1246 void 1247 dumpsys() 1248 { 1249 u_long totalbytesleft, bytes, i, n, memcl; 1250 u_long maddr; 1251 int psize; 1252 daddr_t blkno; 1253 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1254 int error; 1255 1256 /* Save registers. */ 1257 savectx(&dumppcb); 1258 1259 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1260 if (dumpdev == NODEV) 1261 return; 1262 1263 /* 1264 * For dumps during autoconfiguration, 1265 * if dump device has already configured... 1266 */ 1267 if (dumpsize == 0) 1268 cpu_dumpconf(); 1269 if (dumplo <= 0) { 1270 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1271 minor(dumpdev)); 1272 return; 1273 } 1274 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1275 minor(dumpdev), dumplo); 1276 1277 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1278 printf("dump "); 1279 if (psize == -1) { 1280 printf("area unavailable\n"); 1281 return; 1282 } 1283 1284 /* XXX should purge all outstanding keystrokes. */ 1285 1286 if ((error = cpu_dump()) != 0) 1287 goto err; 1288 1289 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1290 blkno = dumplo + cpu_dumpsize(); 1291 dump = bdevsw[major(dumpdev)].d_dump; 1292 error = 0; 1293 1294 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1295 maddr = mem_clusters[memcl].start; 1296 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1297 1298 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1299 1300 /* Print out how many MBs we to go. */ 1301 if ((totalbytesleft % (1024*1024)) == 0) 1302 printf("%ld ", totalbytesleft / (1024 * 1024)); 1303 1304 /* Limit size for next transfer. */ 1305 n = bytes - i; 1306 if (n > BYTES_PER_DUMP) 1307 n = BYTES_PER_DUMP; 1308 1309 error = (*dump)(dumpdev, blkno, 1310 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1311 if (error) 1312 goto err; 1313 maddr += n; 1314 blkno += btodb(n); /* XXX? */ 1315 1316 /* XXX should look for keystrokes, to cancel. */ 1317 } 1318 } 1319 1320 err: 1321 switch (error) { 1322 1323 case ENXIO: 1324 printf("device bad\n"); 1325 break; 1326 1327 case EFAULT: 1328 printf("device not ready\n"); 1329 break; 1330 1331 case EINVAL: 1332 printf("area improper\n"); 1333 break; 1334 1335 case EIO: 1336 printf("i/o error\n"); 1337 break; 1338 1339 case EINTR: 1340 printf("aborted from console\n"); 1341 break; 1342 1343 case 0: 1344 printf("succeeded\n"); 1345 break; 1346 1347 default: 1348 printf("error %d\n", error); 1349 break; 1350 } 1351 printf("\n\n"); 1352 delay(1000); 1353 } 1354 1355 void 1356 frametoreg(framep, regp) 1357 struct trapframe *framep; 1358 struct reg *regp; 1359 { 1360 1361 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1362 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1363 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1364 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1365 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1366 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1367 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1368 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1369 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1370 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1371 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1372 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1373 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1374 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1375 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1376 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1377 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1378 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1379 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1380 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1381 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1382 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1383 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1384 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1385 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1386 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1387 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1388 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1389 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1390 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1391 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1392 regp->r_regs[R_ZERO] = 0; 1393 } 1394 1395 void 1396 regtoframe(regp, framep) 1397 struct reg *regp; 1398 struct trapframe *framep; 1399 { 1400 1401 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1402 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1403 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1404 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1405 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1406 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1407 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1408 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1409 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1410 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1411 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1412 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1413 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1414 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1415 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1416 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1417 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1418 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1419 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1420 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1421 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1422 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1423 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1424 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1425 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1426 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1427 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1428 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1429 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1430 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1431 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1432 /* ??? = regp->r_regs[R_ZERO]; */ 1433 } 1434 1435 void 1436 printregs(regp) 1437 struct reg *regp; 1438 { 1439 int i; 1440 1441 for (i = 0; i < 32; i++) 1442 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1443 i & 1 ? "\n" : "\t"); 1444 } 1445 1446 void 1447 regdump(framep) 1448 struct trapframe *framep; 1449 { 1450 struct reg reg; 1451 1452 frametoreg(framep, ®); 1453 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1454 1455 printf("REGISTERS:\n"); 1456 printregs(®); 1457 } 1458 1459 #ifdef DEBUG 1460 int sigdebug = 0; 1461 int sigpid = 0; 1462 #define SDB_FOLLOW 0x01 1463 #define SDB_KSTACK 0x02 1464 #endif 1465 1466 /* 1467 * Send an interrupt to process. 1468 */ 1469 void 1470 sendsig(catcher, sig, mask, code) 1471 sig_t catcher; 1472 int sig; 1473 sigset_t *mask; 1474 u_long code; 1475 { 1476 struct proc *p = curproc; 1477 struct sigcontext *scp, ksc; 1478 struct trapframe *frame; 1479 struct sigacts *psp = p->p_sigacts; 1480 int onstack, fsize, rndfsize; 1481 1482 frame = p->p_md.md_tf; 1483 1484 /* Do we need to jump onto the signal stack? */ 1485 onstack = 1486 (psp->ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1487 (psp->ps_sigact[sig].sa_flags & SA_ONSTACK) != 0; 1488 1489 /* Allocate space for the signal handler context. */ 1490 fsize = sizeof(ksc); 1491 rndfsize = ((fsize + 15) / 16) * 16; 1492 1493 if (onstack) 1494 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1495 psp->ps_sigstk.ss_size); 1496 else 1497 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1498 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1499 1500 #ifdef DEBUG 1501 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1502 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1503 sig, &onstack, scp); 1504 #endif 1505 1506 /* Build stack frame for signal trampoline. */ 1507 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1508 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1509 1510 /* Save register context. */ 1511 frametoreg(frame, (struct reg *)ksc.sc_regs); 1512 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1513 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1514 1515 /* save the floating-point state, if necessary, then copy it. */ 1516 if (p == fpcurproc) { 1517 alpha_pal_wrfen(1); 1518 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1519 alpha_pal_wrfen(0); 1520 fpcurproc = NULL; 1521 } 1522 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1523 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1524 sizeof(struct fpreg)); 1525 ksc.sc_fp_control = 0; /* XXX ? */ 1526 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1527 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1528 1529 /* Save signal stack. */ 1530 ksc.sc_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1531 1532 /* Save signal mask. */ 1533 ksc.sc_mask = *mask; 1534 1535 #ifdef COMPAT_13 1536 /* 1537 * XXX We always have to save an old style signal mask because 1538 * XXX we might be delivering a signal to a process which will 1539 * XXX escape from the signal in a non-standard way and invoke 1540 * XXX sigreturn() directly. 1541 */ 1542 { 1543 /* Note: it's a long in the stack frame. */ 1544 sigset13_t mask13; 1545 1546 native_sigset_to_sigset13(mask, &mask13); 1547 ksc.__sc_mask13 = mask13; 1548 } 1549 #endif 1550 1551 #ifdef COMPAT_OSF1 1552 /* 1553 * XXX Create an OSF/1-style sigcontext and associated goo. 1554 */ 1555 #endif 1556 1557 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1558 /* 1559 * Process has trashed its stack; give it an illegal 1560 * instruction to halt it in its tracks. 1561 */ 1562 #ifdef DEBUG 1563 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1564 printf("sendsig(%d): copyout failed on sig %d\n", 1565 p->p_pid, sig); 1566 #endif 1567 sigexit(p, SIGILL); 1568 /* NOTREACHED */ 1569 } 1570 #ifdef DEBUG 1571 if (sigdebug & SDB_FOLLOW) 1572 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1573 scp, code); 1574 #endif 1575 1576 /* Set up the registers to return to sigcode. */ 1577 frame->tf_regs[FRAME_PC] = (u_int64_t)psp->ps_sigcode; 1578 frame->tf_regs[FRAME_A0] = sig; 1579 frame->tf_regs[FRAME_A1] = code; 1580 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1581 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1582 alpha_pal_wrusp((unsigned long)scp); 1583 1584 /* Remember that we're now on the signal stack. */ 1585 if (onstack) 1586 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1587 1588 #ifdef DEBUG 1589 if (sigdebug & SDB_FOLLOW) 1590 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1591 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1592 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1593 printf("sendsig(%d): sig %d returns\n", 1594 p->p_pid, sig); 1595 #endif 1596 } 1597 1598 /* 1599 * System call to cleanup state after a signal 1600 * has been taken. Reset signal mask and 1601 * stack state from context left by sendsig (above). 1602 * Return to previous pc and psl as specified by 1603 * context left by sendsig. Check carefully to 1604 * make sure that the user has not modified the 1605 * psl to gain improper privileges or to cause 1606 * a machine fault. 1607 */ 1608 /* ARGSUSED */ 1609 int 1610 sys___sigreturn14(p, v, retval) 1611 struct proc *p; 1612 void *v; 1613 register_t *retval; 1614 { 1615 struct sys___sigreturn14_args /* { 1616 syscallarg(struct sigcontext *) sigcntxp; 1617 } */ *uap = v; 1618 struct sigcontext *scp, ksc; 1619 1620 /* 1621 * The trampoline code hands us the context. 1622 * It is unsafe to keep track of it ourselves, in the event that a 1623 * program jumps out of a signal handler. 1624 */ 1625 scp = SCARG(uap, sigcntxp); 1626 #ifdef DEBUG 1627 if (sigdebug & SDB_FOLLOW) 1628 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1629 #endif 1630 if (ALIGN(scp) != (u_int64_t)scp) 1631 return (EINVAL); 1632 1633 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1634 return (EFAULT); 1635 1636 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1637 return (EINVAL); 1638 1639 /* Restore register context. */ 1640 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1641 p->p_md.md_tf->tf_regs[FRAME_PS] = 1642 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1643 1644 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1645 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1646 1647 /* XXX ksc.sc_ownedfp ? */ 1648 if (p == fpcurproc) 1649 fpcurproc = NULL; 1650 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1651 sizeof(struct fpreg)); 1652 /* XXX ksc.sc_fp_control ? */ 1653 1654 /* Restore signal stack. */ 1655 if (ksc.sc_onstack & SS_ONSTACK) 1656 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1657 else 1658 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1659 1660 /* Restore signal mask. */ 1661 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1662 1663 #ifdef DEBUG 1664 if (sigdebug & SDB_FOLLOW) 1665 printf("sigreturn(%d): returns\n", p->p_pid); 1666 #endif 1667 return (EJUSTRETURN); 1668 } 1669 1670 /* 1671 * machine dependent system variables. 1672 */ 1673 int 1674 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1675 int *name; 1676 u_int namelen; 1677 void *oldp; 1678 size_t *oldlenp; 1679 void *newp; 1680 size_t newlen; 1681 struct proc *p; 1682 { 1683 dev_t consdev; 1684 1685 /* all sysctl names at this level are terminal */ 1686 if (namelen != 1) 1687 return (ENOTDIR); /* overloaded */ 1688 1689 switch (name[0]) { 1690 case CPU_CONSDEV: 1691 if (cn_tab != NULL) 1692 consdev = cn_tab->cn_dev; 1693 else 1694 consdev = NODEV; 1695 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1696 sizeof consdev)); 1697 1698 case CPU_ROOT_DEVICE: 1699 return (sysctl_rdstring(oldp, oldlenp, newp, 1700 root_device->dv_xname)); 1701 1702 case CPU_UNALIGNED_PRINT: 1703 return (sysctl_int(oldp, oldlenp, newp, newlen, 1704 &alpha_unaligned_print)); 1705 1706 case CPU_UNALIGNED_FIX: 1707 return (sysctl_int(oldp, oldlenp, newp, newlen, 1708 &alpha_unaligned_fix)); 1709 1710 case CPU_UNALIGNED_SIGBUS: 1711 return (sysctl_int(oldp, oldlenp, newp, newlen, 1712 &alpha_unaligned_sigbus)); 1713 1714 case CPU_BOOTED_KERNEL: 1715 return (sysctl_rdstring(oldp, oldlenp, newp, 1716 bootinfo.booted_kernel)); 1717 1718 default: 1719 return (EOPNOTSUPP); 1720 } 1721 /* NOTREACHED */ 1722 } 1723 1724 /* 1725 * Set registers on exec. 1726 */ 1727 void 1728 setregs(p, pack, stack) 1729 register struct proc *p; 1730 struct exec_package *pack; 1731 u_long stack; 1732 { 1733 struct trapframe *tfp = p->p_md.md_tf; 1734 #ifdef DEBUG 1735 int i; 1736 #endif 1737 1738 #ifdef DEBUG 1739 /* 1740 * Crash and dump, if the user requested it. 1741 */ 1742 if (boothowto & RB_DUMP) 1743 panic("crash requested by boot flags"); 1744 #endif 1745 1746 #ifdef DEBUG 1747 for (i = 0; i < FRAME_SIZE; i++) 1748 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1749 #else 1750 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1751 #endif 1752 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1753 p->p_addr->u_pcb.pcb_fp.fpr_cr = FPCR_INED 1754 | FPCR_UNFD 1755 | FPCR_UNDZ 1756 | FPCR_DYN(FP_RN) 1757 | FPCR_OVFD 1758 | FPCR_DZED 1759 | FPCR_INVD 1760 | FPCR_DNZ; 1761 alpha_pal_wrusp(stack); 1762 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1763 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1764 1765 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1766 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1767 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1768 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1769 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1770 1771 p->p_md.md_flags &= ~MDP_FPUSED; 1772 if (fpcurproc == p) 1773 fpcurproc = NULL; 1774 } 1775 1776 int 1777 spl0() 1778 { 1779 1780 if (ssir) { 1781 (void) alpha_pal_swpipl(ALPHA_PSL_IPL_SOFT); 1782 softintr_dispatch(); 1783 } 1784 1785 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 1786 } 1787 1788 /* 1789 * The following primitives manipulate the run queues. _whichqs tells which 1790 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 1791 * into queues, Remrunqueue removes them from queues. The running process is 1792 * on no queue, other processes are on a queue related to p->p_priority, 1793 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 1794 * available queues. 1795 */ 1796 /* 1797 * setrunqueue(p) 1798 * proc *p; 1799 * 1800 * Call should be made at splclock(), and p->p_stat should be SRUN. 1801 */ 1802 1803 void 1804 setrunqueue(p) 1805 struct proc *p; 1806 { 1807 int bit; 1808 1809 /* firewall: p->p_back must be NULL */ 1810 if (p->p_back != NULL) 1811 panic("setrunqueue"); 1812 1813 bit = p->p_priority >> 2; 1814 sched_whichqs |= (1 << bit); 1815 p->p_forw = (struct proc *)&sched_qs[bit]; 1816 p->p_back = sched_qs[bit].ph_rlink; 1817 p->p_back->p_forw = p; 1818 sched_qs[bit].ph_rlink = p; 1819 } 1820 1821 /* 1822 * remrunqueue(p) 1823 * 1824 * Call should be made at splclock(). 1825 */ 1826 void 1827 remrunqueue(p) 1828 struct proc *p; 1829 { 1830 int bit; 1831 1832 bit = p->p_priority >> 2; 1833 if ((sched_whichqs & (1 << bit)) == 0) 1834 panic("remrunqueue"); 1835 1836 p->p_back->p_forw = p->p_forw; 1837 p->p_forw->p_back = p->p_back; 1838 p->p_back = NULL; /* for firewall checking. */ 1839 1840 if ((struct proc *)&sched_qs[bit] == sched_qs[bit].ph_link) 1841 sched_whichqs &= ~(1 << bit); 1842 } 1843 1844 /* 1845 * Return the best possible estimate of the time in the timeval 1846 * to which tvp points. Unfortunately, we can't read the hardware registers. 1847 * We guarantee that the time will be greater than the value obtained by a 1848 * previous call. 1849 */ 1850 void 1851 microtime(tvp) 1852 register struct timeval *tvp; 1853 { 1854 int s = splclock(); 1855 static struct timeval lasttime; 1856 1857 *tvp = time; 1858 #ifdef notdef 1859 tvp->tv_usec += clkread(); 1860 while (tvp->tv_usec >= 1000000) { 1861 tvp->tv_sec++; 1862 tvp->tv_usec -= 1000000; 1863 } 1864 #endif 1865 if (tvp->tv_sec == lasttime.tv_sec && 1866 tvp->tv_usec <= lasttime.tv_usec && 1867 (tvp->tv_usec = lasttime.tv_usec + 1) >= 1000000) { 1868 tvp->tv_sec++; 1869 tvp->tv_usec -= 1000000; 1870 } 1871 lasttime = *tvp; 1872 splx(s); 1873 } 1874 1875 /* 1876 * Wait "n" microseconds. 1877 */ 1878 void 1879 delay(n) 1880 unsigned long n; 1881 { 1882 long N = cycles_per_usec * (n); 1883 1884 /* 1885 * XXX Should be written to use RPCC? 1886 */ 1887 1888 __asm __volatile( 1889 "# The 2 corresponds to the insn count\n" 1890 "1: subq %2, %1, %0 \n" 1891 " bgt %0, 1b" 1892 : "=r" (N) 1893 : "i" (2), "0" (N)); 1894 } 1895 1896 #if defined(COMPAT_OSF1) || 1 /* XXX */ 1897 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 1898 u_long)); 1899 1900 void 1901 cpu_exec_ecoff_setregs(p, epp, stack) 1902 struct proc *p; 1903 struct exec_package *epp; 1904 u_long stack; 1905 { 1906 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 1907 1908 setregs(p, epp, stack); 1909 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 1910 } 1911 1912 /* 1913 * cpu_exec_ecoff_hook(): 1914 * cpu-dependent ECOFF format hook for execve(). 1915 * 1916 * Do any machine-dependent diddling of the exec package when doing ECOFF. 1917 * 1918 */ 1919 int 1920 cpu_exec_ecoff_hook(p, epp) 1921 struct proc *p; 1922 struct exec_package *epp; 1923 { 1924 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 1925 extern struct emul emul_netbsd; 1926 int error; 1927 extern int osf1_exec_ecoff_hook(struct proc *p, 1928 struct exec_package *epp); 1929 1930 switch (execp->f.f_magic) { 1931 #ifdef COMPAT_OSF1 1932 case ECOFF_MAGIC_ALPHA: 1933 error = osf1_exec_ecoff_hook(p, epp); 1934 break; 1935 #endif 1936 1937 case ECOFF_MAGIC_NETBSD_ALPHA: 1938 epp->ep_emul = &emul_netbsd; 1939 error = 0; 1940 break; 1941 1942 default: 1943 error = ENOEXEC; 1944 } 1945 return (error); 1946 } 1947 #endif 1948 1949 int 1950 alpha_pa_access(pa) 1951 u_long pa; 1952 { 1953 int i; 1954 1955 for (i = 0; i < mem_cluster_cnt; i++) { 1956 if (pa < mem_clusters[i].start) 1957 continue; 1958 if ((pa - mem_clusters[i].start) >= 1959 (mem_clusters[i].size & ~PAGE_MASK)) 1960 continue; 1961 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 1962 } 1963 1964 /* 1965 * Address is not a memory address. If we're secure, disallow 1966 * access. Otherwise, grant read/write. 1967 */ 1968 if (securelevel > 0) 1969 return (PROT_NONE); 1970 else 1971 return (PROT_READ | PROT_WRITE); 1972 } 1973 1974 /* XXX XXX BEGIN XXX XXX */ 1975 paddr_t alpha_XXX_dmamap_or; /* XXX */ 1976 /* XXX */ 1977 paddr_t /* XXX */ 1978 alpha_XXX_dmamap(v) /* XXX */ 1979 vaddr_t v; /* XXX */ 1980 { /* XXX */ 1981 /* XXX */ 1982 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 1983 } /* XXX */ 1984 /* XXX XXX END XXX XXX */ 1985 1986 char * 1987 dot_conv(x) 1988 unsigned long x; 1989 { 1990 int i; 1991 char *xc; 1992 static int next; 1993 static char space[2][20]; 1994 1995 xc = space[next ^= 1] + sizeof space[0]; 1996 *--xc = '\0'; 1997 for (i = 0;; ++i) { 1998 if (i && (i & 3) == 0) 1999 *--xc = '.'; 2000 *--xc = "0123456789abcdef"[x & 0xf]; 2001 x >>= 4; 2002 if (x == 0) 2003 break; 2004 } 2005 return xc; 2006 } 2007
Indexes created Thu Oct 02 10:09:58 GMT 2025