machdep.c revision 1.5
1 /* $NetBSD: machdep.c,v 1.5 2012/10/13 17:58:55 jdc Exp $ */ 2 3 /* 4 * Copyright 2001, 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe and Simon Burge for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * Copyright (c) 1988 University of Utah. 40 * Copyright (c) 1992, 1993 41 * The Regents of the University of California. All rights reserved. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * the Systems Programming Group of the University of Utah Computer 45 * Science Department, The Mach Operating System project at 46 * Carnegie-Mellon University and Ralph Campbell. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. Neither the name of the University nor the names of its contributors 57 * may be used to endorse or promote products derived from this software 58 * without specific prior written permission. 59 * 60 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 61 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 62 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 63 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 64 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 65 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 66 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 67 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 68 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 69 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 70 * SUCH DAMAGE. 71 * 72 * @(#)machdep.c 8.3 (Berkeley) 1/12/94 73 * from: Utah Hdr: machdep.c 1.63 91/04/24 74 */ 75 76 /* 77 * Copyright (c) 2009, 2010 Miodrag Vallat. 78 * 79 * Permission to use, copy, modify, and distribute this software for any 80 * purpose with or without fee is hereby granted, provided that the above 81 * copyright notice and this permission notice appear in all copies. 82 * 83 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 84 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 85 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 86 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 87 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 88 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 89 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 90 */ 91 92 #include <sys/cdefs.h> 93 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.5 2012/10/13 17:58:55 jdc Exp $"); 94 95 #include "opt_ddb.h" 96 #include "opt_execfmt.h" 97 #include "opt_modular.h" 98 99 #define _MIPS_BUS_DMA_PRIVATE 100 101 #include <sys/param.h> 102 #include <sys/systm.h> 103 #include <sys/kernel.h> 104 #include <sys/buf.h> 105 #include <sys/reboot.h> 106 #include <sys/mount.h> 107 #include <sys/kcore.h> 108 #include <sys/boot_flag.h> 109 #include <sys/termios.h> 110 #include <sys/ksyms.h> 111 #include <sys/device.h> 112 113 #include <uvm/uvm_extern.h> 114 115 #include <dev/cons.h> 116 117 #include "ksyms.h" 118 119 #if NKSYMS || defined(DDB) || defined(MODULAR) 120 #include <machine/db_machdep.h> 121 #include <ddb/db_extern.h> 122 #include <sys/exec_elf.h> 123 #endif 124 125 #include <evbmips/loongson/autoconf.h> 126 #include <evbmips/loongson/loongson_intr.h> 127 #include <evbmips/loongson/loongson_bus_defs.h> 128 #include <machine/cpu.h> 129 #include <machine/psl.h> 130 131 #include <mips/locore.h> 132 133 #include <mips/bonito/bonitoreg.h> 134 #include <mips/bonito/bonitovar.h> 135 #include <mips/pmon/pmon.h> 136 137 #include "sisfb.h" 138 #if NSISFB > 0 139 #include <dev/pci/sisfb.h> 140 #endif 141 142 #include "lynxfb.h" 143 #if NLYNXFB > 0 144 #include <dev/pci/lynxfbvar.h> 145 #endif 146 147 #include "pckbc.h" 148 #if NPCKBC > 0 149 #include <dev/isa/isareg.h> 150 #include <dev/ic/i8042reg.h> 151 #include <dev/ic/pckbcvar.h> 152 #endif 153 #include "pckbd.h" 154 #include "ukbd.h" 155 #if NUKBD > 0 156 #include <dev/usb/ukbdvar.h> 157 #endif 158 #if NPCKBD > 0 || NUKBD > 0 159 #include <dev/wscons/wskbdvar.h> 160 #endif 161 162 #include "com.h" 163 #if NCOM > 0 164 #include <dev/ic/comreg.h> 165 #include <dev/ic/comvar.h> 166 167 bus_space_tag_t comconsiot; 168 bus_addr_t comconsaddr; 169 int comconsrate = 0; 170 #endif /* NCOM > 0 */ 171 172 #ifdef LOW_DEBUG 173 #define DPRINTF(x) printf x 174 #define DPPRINTF(x) pmon_printf x 175 #else 176 #define DPRINTF(x) 177 #define DPPRINTF(x) 178 #endif 179 180 181 int ex_mallocsafe = 0; 182 struct extent *loongson_io_ex = NULL; 183 struct extent *loongson_mem_ex = NULL; 184 struct mips_bus_space bonito_iot; 185 struct mips_bus_space bonito_memt; 186 struct mips_bus_dma_tag bonito_dmat; 187 struct mips_pci_chipset bonito_pc; 188 189 uint loongson_ver; 190 191 const struct platform *sys_platform; 192 struct bonito_flavour { 193 const char *prefix; 194 const struct platform *platform; 195 }; 196 197 extern const struct platform fuloong_platform; 198 extern const struct platform gdium_platform; 199 extern const struct platform generic2e_platform; 200 extern const struct platform lynloong_platform; 201 extern const struct platform yeeloong_platform; 202 203 const struct bonito_flavour bonito_flavours[] = { 204 /* Lemote Fuloong 2F mini-PC */ 205 { "LM6002", &fuloong_platform }, /* dual Ethernet, no prefix */ 206 { "LM6003", &fuloong_platform }, 207 { "LM6004", &fuloong_platform }, 208 /* EMTEC Gdium Liberty 1000 */ 209 { "Gdium", &gdium_platform }, 210 /* Lemote Yeeloong 8.9" netbook */ 211 { "LM8089", &yeeloong_platform }, 212 /* supposedly Lemote Yeeloong 10.1" netbook, but those found so far 213 report themselves as LM8089 */ 214 { "LM8101", &yeeloong_platform }, 215 /* Lemote Lynloong all-in-one computer */ 216 { "LM9001", &lynloong_platform }, 217 { NULL } 218 }; 219 220 /* For sysctl_hw. */ 221 extern char cpu_model[]; 222 223 /* Maps for VM objects. */ 224 struct vm_map *phys_map = NULL; 225 226 int netboot; /* Are we netbooting? */ 227 228 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; 229 int mem_cluster_cnt; 230 231 void mach_init(int, int32_t, int32_t, int32_t, char *); 232 233 static int pmoncngetc(dev_t); 234 static void pmoncnputc(dev_t, int); 235 236 struct consdev pmoncons = { 237 NULL, /* probe */ 238 NULL, /* init */ 239 pmoncngetc, /* getc */ 240 pmoncnputc, /* putc */ 241 nullcnpollc, /* poolc */ 242 NULL, /* BELL */ 243 makedev(0, 0), 244 CN_DEAD 245 }; 246 247 /* 248 * Do all the stuff that locore normally does before calling main(). 249 */ 250 void 251 mach_init(int32_t argc, int32_t argva, int32_t enva, int32_t callvec, 252 char *boot_esym) 253 { 254 void *kernend; 255 #ifdef NOTYET 256 int howto; 257 #endif 258 const char *env; 259 int i; 260 psize_t memlo, memhi; 261 const struct bonito_flavour *f; 262 char *ssym = NULL, *esym = NULL; 263 pcireg_t reg; 264 pcitag_t pcitag; 265 266 extern char edata[], end[]; 267 268 /* 269 * Clear the BSS segment. 270 */ 271 memset(edata, 0, (char *)end - edata); 272 273 pmon_init(argc, argva, enva, callvec); 274 DPPRINTF(("pmon hello\n")); 275 276 cn_tab = &pmoncons; 277 278 DPRINTF(("hello 0x%x %d 0x%x 0x%x %p stack %p\n", pmon_callvec, argc, argva, enva, boot_esym, &i)); 279 280 /* 281 * Reserve space for the symbol table, if it exists. 282 */ 283 284 #if NKSYMS || defined(DDB) || defined(MODULAR) 285 /* Attempt to locate ELF header and symbol table after kernel. */ 286 if (end[0] == ELFMAG0 && end[1] == ELFMAG1 && 287 end[2] == ELFMAG2 && end[3] == ELFMAG3) { 288 /* ELF header exists directly after kernel. */ 289 ssym = end; 290 esym = boot_esym; 291 kernend = (void *)mips_round_page(esym); 292 } else { 293 ssym = (char *)(vaddr_t)*(int32_t *)end; 294 if (((long)ssym - (long)end) >= 0 && 295 ((long)ssym - (long)end) <= 0x1000 && 296 ssym[0] == ELFMAG0 && ssym[1] == ELFMAG1 && 297 ssym[2] == ELFMAG2 && ssym[3] == ELFMAG3) { 298 /* Pointers exist directly after kernel. */ 299 esym = (char *)(vaddr_t)*((int32_t *)end + 1); 300 kernend = (void *)mips_round_page(esym); 301 } else { 302 /* Pointers aren't setup either... */ 303 ssym = NULL; 304 esym = NULL; 305 kernend = (void *)mips_round_page(end); 306 } 307 } 308 DPRINTF(("ssym %p esym %p\n", ssym, esym)); 309 #endif 310 311 /* 312 * Set up the exception vectors and CPU-specific function 313 * vectors early on. We need the wbflush() vector set up 314 * before comcnattach() is called (or at least before the 315 * first printf() after that is called). 316 * Also clears the I+D caches. 317 */ 318 DPRINTF(("mips_vector_init ")); 319 mips_vector_init(NULL, false); 320 321 DPRINTF(("uvm_setpagesize\n")); 322 /* set the VM page size */ 323 uvm_setpagesize(); 324 #if NKSYMS || defined(DDB) || defined(MODULAR) 325 //ksyms_addsyms_elf((vaddr_t)esym - (vaddr_t)ssym, ssym, esym); 326 #endif 327 328 /* 329 * Try and figure out what kind of hardware we are. 330 */ 331 332 env = pmon_getenv("systype"); 333 if (env == NULL) { 334 printf("Unable to figure out system type!\n"); 335 goto unsupported; 336 } 337 if (strcmp(env, "Bonito") != 0) { 338 printf("This kernel doesn't support system type \"%s\".\n", 339 env); 340 goto unsupported; 341 } 342 343 /* 344 * While the kernel supports other processor types than Loongson, 345 * we are not expecting a Bonito-based system with a different 346 * processor. Just to be on the safe side, refuse to run on 347 * non Loongson2 processors for now. 348 */ 349 350 switch ((mips_options.mips_cpu_id >> 8) & 0xff) { 351 case MIPS_LOONGSON2: 352 switch (mips_options.mips_cpu_id & 0xff) { 353 case 0x00: 354 loongson_ver = 0x2c; 355 break; 356 case 0x02: 357 loongson_ver = 0x2e; 358 break; 359 case 0x03: 360 loongson_ver = 0x2f; 361 break; 362 case 0x05: 363 loongson_ver = 0x3a; 364 break; 365 } 366 if (loongson_ver == 0x2e || loongson_ver == 0x2f) 367 break; 368 /* FALLTHROUGH */ 369 default: 370 printf("This kernel doesn't support processor type 0x%x" 371 ", version %d.%d.\n", 372 (mips_options.mips_cpu_id >> 8) & 0xff, 373 (mips_options.mips_cpu_id >> 4) & 0x0f, 374 mips_options.mips_cpu_id & 0x0f); 375 goto unsupported; 376 } 377 378 /* 379 * Try to figure out what particular machine we run on, depending 380 * on the PMON version information. 381 */ 382 383 env = pmon_getenv("Version"); 384 if (env == NULL) { 385 /* 386 * If this is a 2E system, use the generic code and hope 387 * for the best. 388 */ 389 if (loongson_ver == 0x2e) { 390 sys_platform = &generic2e_platform; 391 } else { 392 printf("Unable to figure out model!\n"); 393 goto unsupported; 394 } 395 } else { 396 for (f = bonito_flavours; f->prefix != NULL; f++) 397 if (strncmp(env, f->prefix, strlen(f->prefix)) == 398 0) { 399 sys_platform = f->platform; 400 break; 401 } 402 403 if (sys_platform == NULL) { 404 /* 405 * Early Lemote designs shipped without a model prefix. 406 * Hopefully these well be close enough to the first 407 * generation Fuloong 2F design (LM6002); let's warn 408 * the user and try this if version is 1.2.something 409 * (1.3 onwards are expected to have a model prefix, 410 * and there are currently no reports of 1.1 and 411 * below being 2F systems). 412 * 413 * Note that this could be handled by adding a 414 * "1.2." machine type entry to the flavours table, 415 * but I prefer have it stand out. 416 * LM6002 users are encouraged to add the system 417 * model prefix to the `Version' variable. 418 */ 419 if (strncmp(env, "1.2.", 4) == 0) { 420 printf("No model prefix in version" 421 " string \"%s\".\n" 422 "Attempting to match as Lemote Fuloong\n", 423 env); 424 sys_platform = &fuloong_platform; 425 } 426 } 427 428 if (sys_platform == NULL) { 429 printf("This kernel doesn't support model \"%s\"." 430 "\n", env); 431 goto unsupported; 432 } 433 } 434 435 sprintf(cpu_model, "%s %s", sys_platform->vendor, 436 sys_platform->product); 437 DPRINTF(("Found %s, setting up.\n", cpu_model)); 438 439 /* 440 * Figure out memory information. 441 * PMON reports it in two chunks, the memory under the 256MB 442 * CKSEG limit, and memory above that limit. We need to do the 443 * math ourselves. 444 */ 445 446 env = pmon_getenv("memsize"); 447 if (env == NULL) { 448 printf("Could not get memory information" 449 " from the firmware\n"); 450 goto unsupported; 451 } 452 memlo = strtoul(env, NULL, 10); /* size in MB */ 453 DPRINTF(("memlo %" PRIdPSIZE, memlo)); 454 if (memlo < 0 || memlo > 256) { 455 printf("Incorrect low memory size `%s'\n", env); 456 goto unsupported; 457 } 458 459 /* 3A PMON only reports up to 240MB as low memory */ 460 if (memlo >= 240) { 461 env = pmon_getenv("highmemsize"); 462 if (env == NULL) 463 memhi = 0; 464 else 465 memhi = strtoul(env, NULL, 10); /* size in MB */ 466 if (memhi < 0 || memhi > (64 * 1024) - 256) { 467 printf("Incorrect high memory size `%s'\n", 468 env); 469 /* better expose the problem than limit to 256MB */ 470 goto unsupported; 471 } 472 } else 473 memhi = 0; 474 475 DPRINTF(("memhi %" PRIdPSIZE "\n", memhi)); 476 memlo = memlo * 1024 * 1024; 477 memhi = memhi * 1024 * 1024; 478 479 switch (loongson_ver) { 480 case 0x2e: 481 loongson2e_setup(memlo, memhi, 482 MIPS_KSEG0_START, (vaddr_t)kernend, &bonito_dmat); 483 break; 484 default: 485 case 0x2f: 486 case 0x3a: 487 loongson2f_setup(memlo, memhi, 488 MIPS_KSEG0_START, (vaddr_t)kernend, &bonito_dmat); 489 break; 490 } 491 492 DPRINTF(("bonito_pci_init ")); 493 bonito_pci_init(&bonito_pc, sys_platform->bonito_config); 494 bonito_pc.pc_intr_v = __UNCONST(sys_platform->bonito_config); 495 bonito_pc.pc_intr_map = loongson_pci_intr_map; 496 bonito_pc.pc_intr_string = loongson_pci_intr_string; 497 bonito_pc.pc_intr_evcnt = loongson_pci_intr_evcnt; 498 bonito_pc.pc_intr_establish = loongson_pci_intr_establish; 499 bonito_pc.pc_intr_disestablish = loongson_pci_intr_disestablish; 500 bonito_pc.pc_conf_interrupt = loongson_pci_conf_interrupt; 501 bonito_pc.pc_pciide_compat_intr_establish = 502 loongson_pciide_compat_intr_establish; 503 DPRINTF(("bonito_bus_io_init ")); 504 bonito_bus_io_init(&bonito_iot, NULL); 505 /* override mapping function */ 506 bonito_iot.bs_map = bonito_bus_io_legacy_map; 507 DPRINTF(("bonito_bus_mem_init\n")); 508 bonito_bus_mem_init(&bonito_memt, NULL); 509 510 bonito_dmat._cookie = __UNCONST(sys_platform); 511 bonito_dmat._dmamap_ops = mips_bus_dmamap_ops; 512 bonito_dmat._dmamem_ops = mips_bus_dmamem_ops; 513 bonito_dmat._dmatag_ops = mips_bus_dmatag_ops; 514 515 DPRINTF(("sys_platform->setup %p\n", sys_platform->setup)); 516 if (sys_platform->setup != NULL) 517 (*(sys_platform->setup))(); 518 519 #if NCOM > 0 520 DPRINTF(("comconsrate %d\n", comconsrate)); 521 if (comconsrate > 0) { 522 if (comcnattach(comconsiot, comconsaddr, comconsrate, 523 COM_FREQ, COM_TYPE_NORMAL, 524 (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8) != 0) 525 panic("unable to initialize serial console"); 526 } 527 #endif /* NCOM > 0 */ 528 529 for (i = 0; i < 32 - 0x11; i++) { 530 pcitag = pci_make_tag(&bonito_pc, 0, i, 0); 531 reg = pci_conf_read(&bonito_pc, pcitag, PCI_CLASS_REG); 532 DPRINTF(("dev %d class 0x%x", i, reg)); 533 reg = pci_conf_read(&bonito_pc, pcitag, PCI_ID_REG); 534 DPRINTF((" id 0x%x; ", reg)); 535 #if NSISFB > 0 536 if (cn_tab == &pmoncons) 537 sisfb_cnattach(&bonito_memt, &bonito_iot, &bonito_pc, 538 pcitag, reg); 539 #endif 540 #if NLYNXFB > 0 541 if (cn_tab == &pmoncons) 542 lynxfb_cnattach(&bonito_memt, &bonito_iot, &bonito_pc, 543 pcitag, reg); 544 #endif 545 if (cn_tab == &pmoncons) 546 gdium_cnattach(&bonito_memt, &bonito_iot, &bonito_pc, 547 pcitag, reg); 548 if (cn_tab != &pmoncons) 549 break; 550 } 551 #if NPCKBC > 0 || NUKBD > 0 552 if (cn_tab != &pmoncons) { 553 int rc = ENXIO; 554 #if NPCKBC > 0 555 if (rc != 0) 556 rc = pckbc_cnattach(&bonito_iot, IO_KBD, KBCMDP, 0, 0); 557 #endif 558 #if NUKBD > 0 559 if (rc != 0) 560 rc = ukbd_cnattach(); 561 #endif 562 } 563 #endif /* NPCKBC > 0 || NUKBD > 0 */ 564 DPRINTF(("\n")); 565 566 /* 567 * Get the timer from PMON. 568 */ 569 DPRINTF(("search cpuclock ")); 570 env = pmon_getenv("cpuclock"); 571 DPRINTF(("got %s ", env)); 572 if (env != NULL) { 573 curcpu()->ci_cpu_freq = 574 strtoul(env, NULL, 10); 575 } 576 577 DPRINTF(("cpuclock %ld\n", curcpu()->ci_cpu_freq)); 578 579 if (mips_options.mips_cpu_flags & CPU_MIPS_DOUBLE_COUNT) 580 curcpu()->ci_cpu_freq /= 2; 581 582 583 /* Compute the number of ticks for hz. */ 584 curcpu()->ci_cycles_per_hz = (curcpu()->ci_cpu_freq + hz / 2) / hz; 585 586 /* Compute the delay divisor. */ 587 curcpu()->ci_divisor_delay = 588 ((curcpu()->ci_cpu_freq + 500000) / 1000000); 589 590 /* 591 * Get correct cpu frequency if the CPU runs at twice the 592 * external/cp0-count frequency. 593 */ 594 if (mips_options.mips_cpu_flags & CPU_MIPS_DOUBLE_COUNT) 595 curcpu()->ci_cpu_freq *= 2; 596 597 #ifdef DEBUG 598 printf("Timer calibration: %lu cycles/sec\n", 599 curcpu()->ci_cpu_freq); 600 #endif 601 602 #if NCOM > 0 && 0 603 /* 604 * Delay to allow firmware putchars to complete. 605 * FIFO depth * character time. 606 * character time = (1000000 / (defaultrate / 10)) 607 */ 608 delay(160000000 / comcnrate); 609 if (comcnattach(&gc->gc_iot, MALTA_UART0ADR, comcnrate, 610 COM_FREQ, COM_TYPE_NORMAL, 611 (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8) != 0) 612 panic("malta: unable to initialize serial console"); 613 #endif /* NCOM > 0 */ 614 615 /* 616 * XXX: check argv[0] - do something if "gdb"??? 617 */ 618 619 /* 620 * Look at arguments passed to us and compute boothowto. 621 */ 622 boothowto = RB_AUTOBOOT; 623 #ifdef NOTYET 624 for (i = 1; i < argc; i++) { 625 for (cp = argv[i]; *cp; cp++) { 626 /* Ignore superfluous '-', if there is one */ 627 if (*cp == '-') 628 continue; 629 630 howto = 0; 631 BOOT_FLAG(*cp, howto); 632 if (! howto) 633 printf("bootflag '%c' not recognised\n", *cp); 634 else 635 boothowto |= howto; 636 } 637 } 638 #endif 639 640 /* 641 * Load the rest of the available pages into the VM system. 642 */ 643 mips_page_physload(MIPS_KSEG0_START, (vaddr_t)kernend, 644 mem_clusters, mem_cluster_cnt, NULL, 0); 645 646 /* 647 * Initialize error message buffer (at end of core). 648 */ 649 DPRINTF(("mips_init_msgbuf\n")); 650 mips_init_msgbuf(); 651 652 DPRINTF(("pmap_bootstrap\n")); 653 pmap_bootstrap(); 654 655 /* 656 * Allocate uarea page for lwp0 and set it. 657 */ 658 DPRINTF(("curlwp %p ", curlwp)); 659 DPRINTF(("curlwp stack %p\n", curlwp->l_addr)); 660 mips_init_lwp0_uarea(); 661 662 DPRINTF(("curlwp %p ", curlwp)); 663 DPRINTF(("curlwp stack %p\n", curlwp->l_addr)); 664 665 /* 666 * Initialize debuggers, and break into them, if appropriate. 667 */ 668 #if defined(DDB) 669 if (boothowto & RB_KDB) 670 Debugger(); 671 #endif 672 DPRINTF(("return\n")); 673 return; 674 unsupported: 675 panic("unsupported hardware\n"); 676 } 677 678 void 679 consinit(void) 680 { 681 682 /* 683 * Everything related to console initialization is done 684 * in mach_init(). 685 */ 686 } 687 688 /* 689 * Allocate memory for variable-sized tables, 690 */ 691 void 692 cpu_startup(void) 693 { 694 /* 695 * Do the common startup items. 696 */ 697 cpu_startup_common(); 698 699 /* 700 * Virtual memory is bootstrapped -- notify the bus spaces 701 * that memory allocation is now safe. 702 */ 703 ex_mallocsafe = 1; 704 } 705 706 int waittime = -1; 707 708 void 709 cpu_reboot(int howto, char *bootstr) 710 { 711 712 /* Take a snapshot before clobbering any registers. */ 713 savectx(curpcb); 714 715 if (cold) { 716 howto |= RB_HALT; 717 goto haltsys; 718 } 719 720 /* If "always halt" was specified as a boot flag, obey. */ 721 if (boothowto & RB_HALT) 722 howto |= RB_HALT; 723 724 boothowto = howto; 725 if ((howto & RB_NOSYNC) == 0 && (waittime < 0)) { 726 waittime = 0; 727 vfs_shutdown(); 728 729 /* 730 * If we've been adjusting the clock, the todr 731 * will be out of synch; adjust it now. 732 */ 733 resettodr(); 734 } 735 736 splhigh(); 737 738 if (howto & RB_DUMP) 739 dumpsys(); 740 741 haltsys: 742 doshutdownhooks(); 743 744 pmf_system_shutdown(boothowto); 745 746 if ((howto & RB_POWERDOWN) == RB_POWERDOWN) { 747 if (sys_platform->powerdown != NULL) 748 sys_platform->powerdown(); 749 } 750 751 if (howto & RB_HALT) { 752 printf("\n"); 753 printf("The operating system has halted.\n"); 754 printf("Please press any key to reboot.\n\n"); 755 cnpollc(1); /* For proper keyboard command handling */ 756 cngetc(); 757 cnpollc(0); 758 } 759 760 printf("%s\n\n", ((howto & RB_HALT) != 0) ? "halted." : "rebooting..."); 761 762 if (sys_platform->reset != NULL) 763 sys_platform->reset(); 764 765 __asm__ __volatile__ ( 766 "\t.long 0x3c02bfc0\n" 767 "\t.long 0x00400008\n" 768 ::: "v0"); 769 } 770 771 /* 772 * Early console through pmon routines. 773 */ 774 775 int 776 pmoncngetc(dev_t dev) 777 { 778 /* 779 * PMON does not give us a getc routine. So try to get a whole line 780 * and return it char by char, trying not to lose the \n. Kind 781 * of ugly but should work. 782 * 783 * Note that one could theoretically use pmon_read(STDIN, &c, 1) 784 * but the value of STDIN within PMON is not a constant and there 785 * does not seem to be a way of letting us know which value to use. 786 */ 787 static char buf[1 + PMON_MAXLN]; 788 static char *bufpos = buf; 789 int c; 790 791 if (*bufpos == '\0') { 792 bufpos = buf; 793 if (pmon_gets(buf) == NULL) { 794 /* either an empty line or EOF. assume the former */ 795 return (int)'\n'; 796 } else { 797 /* put back the \n sign */ 798 buf[strlen(buf)] = '\n'; 799 } 800 } 801 802 c = (int)*bufpos++; 803 if (bufpos - buf > PMON_MAXLN) { 804 bufpos = buf; 805 *bufpos = '\0'; 806 } 807 808 return c; 809 } 810 811 void 812 pmoncnputc(dev_t dev, int c) 813 { 814 if (c == '\n') 815 pmon_printf("\n"); 816 else 817 pmon_printf("%c", c); 818 } 819
Indexes created Wed Oct 01 15:09:59 GMT 2025