machdep.c revision 1.44
1 /* $NetBSD: machdep.c,v 1.44 2009/11/27 03:23:08 rmind Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 Itronix Inc. 5 * All rights reserved. 6 * 7 * Portions written by Garrett D'Amore for Itronix 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. The name of Itronix Inc. may not be used to endorse 18 * or promote products derived from this software without specific 19 * prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 28 * ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 /* 34 * Copyright (c) 1992, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * This code is derived from software contributed to Berkeley by 38 * the Systems Programming Group of the University of Utah Computer 39 * Science Department, The Mach Operating System project at 40 * Carnegie-Mellon University and Ralph Campbell. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * @(#)machdep.c 8.3 (Berkeley) 1/12/94 67 * from: Utah Hdr: machdep.c 1.63 91/04/24 68 */ 69 /* 70 * Copyright (c) 1988 University of Utah. 71 * 72 * This code is derived from software contributed to Berkeley by 73 * the Systems Programming Group of the University of Utah Computer 74 * Science Department, The Mach Operating System project at 75 * Carnegie-Mellon University and Ralph Campbell. 76 * 77 * Redistribution and use in source and binary forms, with or without 78 * modification, are permitted provided that the following conditions 79 * are met: 80 * 1. Redistributions of source code must retain the above copyright 81 * notice, this list of conditions and the following disclaimer. 82 * 2. Redistributions in binary form must reproduce the above copyright 83 * notice, this list of conditions and the following disclaimer in the 84 * documentation and/or other materials provided with the distribution. 85 * 3. All advertising materials mentioning features or use of this software 86 * must display the following acknowledgement: 87 * This product includes software developed by the University of 88 * California, Berkeley and its contributors. 89 * 4. Neither the name of the University nor the names of its contributors 90 * may be used to endorse or promote products derived from this software 91 * without specific prior written permission. 92 * 93 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 94 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 95 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 96 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 97 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 98 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 99 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 101 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 102 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 103 * SUCH DAMAGE. 104 * 105 * @(#)machdep.c 8.3 (Berkeley) 1/12/94 106 * from: Utah Hdr: machdep.c 1.63 91/04/24 107 */ 108 109 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 110 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.44 2009/11/27 03:23:08 rmind Exp $"); 111 112 #include "opt_ddb.h" 113 #include "opt_kgdb.h" 114 115 #include "opt_memsize.h" 116 #include "opt_modular.h" 117 #include "opt_ethaddr.h" 118 119 #include <sys/param.h> 120 #include <sys/systm.h> 121 #include <sys/kernel.h> 122 #include <sys/buf.h> 123 #include <sys/reboot.h> 124 #include <sys/mount.h> 125 #include <sys/kcore.h> 126 #include <sys/boot_flag.h> 127 #include <sys/termios.h> 128 #include <sys/ksyms.h> 129 #include <sys/device.h> 130 131 #include <net/if.h> 132 #include <net/if_ether.h> 133 134 #include <uvm/uvm_extern.h> 135 136 #include <dev/cons.h> 137 138 #include "ksyms.h" 139 140 #if NKSYMS || defined(DDB) || defined(MODULAR) 141 #include <machine/db_machdep.h> 142 #include <ddb/db_extern.h> 143 #endif 144 145 #include <mips/cache.h> 146 #include <mips/locore.h> 147 #include <machine/yamon.h> 148 149 #include <evbmips/alchemy/board.h> 150 #include <mips/alchemy/dev/aupcivar.h> 151 #include <mips/alchemy/dev/aupcmciavar.h> 152 #include <mips/alchemy/dev/auspivar.h> 153 #include <mips/alchemy/include/aureg.h> 154 #include <mips/alchemy/include/auvar.h> 155 #include <mips/alchemy/include/aubusvar.h> 156 157 #include "com.h" 158 #if NCOM > 0 159 160 int aucomcnrate = 0; 161 #endif /* NAUCOM > 0 */ 162 163 #include "ohci.h" 164 165 /* Our exported CPU info; we can have only one. */ 166 struct cpu_info cpu_info_store; 167 168 /* Maps for VM objects. */ 169 struct vm_map *mb_map = NULL; 170 struct vm_map *phys_map = NULL; 171 172 int maxmem; /* max memory per process */ 173 174 int mem_cluster_cnt; 175 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; 176 177 yamon_env_var *yamon_envp; 178 struct mips_bus_space alchemy_cpuregt; 179 180 void mach_init(int, char **, yamon_env_var *, u_long); /* XXX */ 181 182 void 183 mach_init(int argc, char **argv, yamon_env_var *envp, u_long memsize) 184 { 185 bus_space_handle_t sh; 186 void *kernend; 187 const char *cp; 188 u_long first, last; 189 struct pcb *pcb0; 190 vaddr_t v; 191 int freqok, howto, i; 192 const struct alchemy_board *board; 193 194 extern char edata[], end[]; /* XXX */ 195 196 board = board_info(); 197 KASSERT(board != NULL); 198 199 /* clear the BSS segment */ 200 kernend = (void *)mips_round_page(end); 201 memset(edata, 0, (char *)kernend - edata); 202 203 /* set CPU model info for sysctl_hw */ 204 strcpy(cpu_model, board->ab_name); 205 206 /* save the yamon environment pointer */ 207 yamon_envp = envp; 208 209 /* Use YAMON callbacks for early console I/O */ 210 cn_tab = &yamon_promcd; 211 212 /* 213 * Set up the exception vectors and CPU-specific function 214 * vectors early on. We need the wbflush() vector set up 215 * before comcnattach() is called (or at least before the 216 * first printf() after that is called). 217 * Sets up mips_cpu_flags that may be queried by other 218 * functions called during startup. 219 * Also clears the I+D caches. 220 */ 221 mips_vector_init(); 222 223 /* 224 * Set the VM page size. 225 */ 226 uvm_setpagesize(); 227 228 /* 229 * Use YAMON's CPU frequency if available. 230 */ 231 freqok = yamon_setcpufreq(1); 232 233 /* 234 * Initialize bus space tags. 235 */ 236 au_cpureg_bus_mem_init(&alchemy_cpuregt, &alchemy_cpuregt); 237 aubus_st = &alchemy_cpuregt; 238 239 /* 240 * Calibrate the timer if YAMON failed to tell us. 241 */ 242 if (!freqok) { 243 bus_space_map(aubus_st, PC_BASE, PC_SIZE, 0, &sh); 244 au_cal_timers(aubus_st, sh); 245 bus_space_unmap(aubus_st, sh, PC_SIZE); 246 } 247 248 /* 249 * Perform board-specific initialization. 250 */ 251 board->ab_init(); 252 253 /* 254 * Bring up the console. 255 */ 256 #if NCOM > 0 257 #ifdef CONSPEED 258 if (aucomcnrate == 0) 259 aucomcnrate = CONSPEED; 260 #else /* !CONSPEED */ 261 /* 262 * Learn default console speed. We use the YAMON environment, 263 * though we could probably also figure it out by checking the 264 * aucom registers directly. 265 */ 266 if ((aucomcnrate == 0) && ((cp = yamon_getenv("modetty0")) != NULL)) 267 aucomcnrate = strtoul(cp, NULL, 0); 268 269 if (aucomcnrate == 0) { 270 printf("FATAL: `modetty0' YAMON variable not set. Set it\n"); 271 printf(" to the speed of the console and try again.\n"); 272 printf(" Or, build a kernel with the `CONSPEED' " 273 "option.\n"); 274 panic("mach_init"); 275 } 276 #endif /* CONSPEED */ 277 278 /* 279 * Delay to allow firmware putchars to complete. 280 * FIFO depth * character time. 281 * character time = (1000000 / (defaultrate / 10)) 282 */ 283 delay(160000000 / aucomcnrate); 284 if (com_aubus_cnattach(UART0_BASE, aucomcnrate) != 0) 285 panic("mach_init: unable to initialize serial console"); 286 287 #else /* NCOM > 0 */ 288 panic("mach_init: not configured to use serial console"); 289 #endif /* NAUCOM > 0 */ 290 291 /* 292 * Look at arguments passed to us and compute boothowto. 293 */ 294 boothowto = RB_AUTOBOOT; 295 #ifdef KADB 296 boothowto |= RB_KDB; 297 #endif 298 for (i = 1; i < argc; i++) { 299 for (cp = argv[i]; *cp; cp++) { 300 /* Ignore superfluous '-', if there is one */ 301 if (*cp == '-') 302 continue; 303 304 howto = 0; 305 BOOT_FLAG(*cp, howto); 306 if (! howto) 307 printf("bootflag '%c' not recognised\n", *cp); 308 else 309 boothowto |= howto; 310 } 311 } 312 313 /* 314 * Determine the memory size. Use the `memsize' PMON 315 * variable. If that's not available, panic. 316 * 317 * Note: Reserve the first page! That's where the trap 318 * vectors are located. 319 */ 320 321 #if defined(MEMSIZE) 322 memsize = MEMSIZE; 323 #else 324 if (memsize == 0) { 325 if ((cp = yamon_getenv("memsize")) != NULL) 326 memsize = strtoul(cp, NULL, 0); 327 else { 328 printf("FATAL: `memsize' YAMON variable not set. Set it to\n"); 329 printf(" the amount of memory (in MB) and try again.\n"); 330 printf(" Or, build a kernel with the `MEMSIZE' " 331 "option.\n"); 332 panic("mach_init"); 333 } 334 } 335 #endif /* MEMSIZE */ 336 printf("Memory size: 0x%08lx\n", memsize); 337 physmem = btoc(memsize); 338 339 mem_clusters[mem_cluster_cnt].start = PAGE_SIZE; 340 mem_clusters[mem_cluster_cnt].size = 341 memsize - mem_clusters[mem_cluster_cnt].start; 342 mem_cluster_cnt++; 343 344 /* 345 * Load the rest of the available pages into the VM system. 346 */ 347 first = round_page(MIPS_KSEG0_TO_PHYS(kernend)); 348 last = mem_clusters[0].start + mem_clusters[0].size; 349 uvm_page_physload(atop(first), atop(last), atop(first), atop(last), 350 VM_FREELIST_DEFAULT); 351 352 /* 353 * Initialize message buffer (at end of core). 354 */ 355 mips_init_msgbuf(); 356 357 /* 358 * Initialize the virtual memory system. 359 */ 360 pmap_bootstrap(); 361 362 /* 363 * Allocate uarea page for lwp0 and set it. 364 */ 365 v = uvm_pageboot_alloc(USPACE); 366 uvm_lwp_setuarea(&lwp0, v); 367 368 pcb0 = lwp_getpcb(&lwp0); 369 pcb0->pcb_context[11] = MIPS_INT_MASK | MIPS_SR_INT_IE; /* SR */ 370 371 lwp0.l_md.md_regs = (struct frame *)(v + USPACE) - 1; 372 373 /* 374 * Initialize debuggers, and break into them, if appropriate. 375 */ 376 #ifdef DDB 377 if (boothowto & RB_KDB) 378 Debugger(); 379 #endif 380 } 381 382 void 383 consinit(void) 384 { 385 386 /* 387 * Everything related to console initialization is done 388 * in mach_init(). 389 */ 390 } 391 392 void 393 cpu_startup(void) 394 { 395 char pbuf[9]; 396 vaddr_t minaddr, maxaddr; 397 #ifdef DEBUG 398 extern int pmapdebug; /* XXX */ 399 int opmapdebug = pmapdebug; 400 401 pmapdebug = 0; /* Shut up pmap debug during bootstrap */ 402 #endif 403 404 /* 405 * Good {morning,afternoon,evening,night}. 406 */ 407 printf("%s%s", copyright, version); 408 printf("%s\n", cpu_model); 409 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 410 printf("total memory = %s\n", pbuf); 411 412 minaddr = 0; 413 414 /* 415 * Allocate a submap for physio 416 */ 417 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 418 VM_PHYS_SIZE, 0, false, NULL); 419 420 /* 421 * No need to allocate an mbuf cluster submap. Mbuf clusters 422 * are allocated via the pool allocator, and we use KSEG to 423 * map those pages. 424 */ 425 426 #ifdef DEBUG 427 pmapdebug = opmapdebug; 428 #endif 429 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 430 printf("avail memory = %s\n", pbuf); 431 } 432 433 void 434 cpu_reboot(int howto, char *bootstr) 435 { 436 static int waittime = -1; 437 const struct alchemy_board *board; 438 439 /* Take a snapshot before clobbering any registers. */ 440 if (curproc) 441 savectx(curpcb); 442 443 board = board_info(); 444 KASSERT(board != NULL); 445 446 /* If "always halt" was specified as a boot flag, obey. */ 447 if (boothowto & RB_HALT) 448 howto |= RB_HALT; 449 450 boothowto = howto; 451 452 /* If system is cold, just halt. */ 453 if (cold) { 454 boothowto |= RB_HALT; 455 goto haltsys; 456 } 457 458 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 459 waittime = 0; 460 461 /* 462 * Synchronize the disks.... 463 */ 464 vfs_shutdown(); 465 466 /* 467 * If we've been adjusting the clock, the todr 468 * will be out of synch; adjust it now. 469 */ 470 resettodr(); 471 } 472 473 /* Disable interrupts. */ 474 splhigh(); 475 476 if (boothowto & RB_DUMP) 477 dumpsys(); 478 479 haltsys: 480 /* Run any shutdown hooks. */ 481 doshutdownhooks(); 482 483 pmf_system_shutdown(boothowto); 484 485 if ((boothowto & RB_POWERDOWN) == RB_POWERDOWN) 486 if (board && board->ab_poweroff) 487 board->ab_poweroff(); 488 489 /* 490 * YAMON may autoboot (depending on settings), and we cannot pass 491 * flags to it (at least I haven't figured out how to yet), so 492 * we "pseudo-halt" now. 493 */ 494 if (boothowto & RB_HALT) { 495 printf("\n"); 496 printf("The operating system has halted.\n"); 497 printf("Please press any key to reboot.\n\n"); 498 cnpollc(1); /* For proper keyboard command handling */ 499 cngetc(); 500 cnpollc(0); 501 } 502 503 printf("reseting board...\n\n"); 504 505 /* 506 * Try to use board-specific reset logic, which might involve a better 507 * hardware reset. 508 */ 509 if (board->ab_reboot) 510 board->ab_reboot(); 511 512 #if 1 513 /* XXX 514 * For some reason we are leaving the ethernet MAC in a state where 515 * YAMON isn't happy with it. So just call the reset vector (grr, 516 * Alchemy YAMON doesn't have a "reset" command). 517 */ 518 mips_icache_sync_all(); 519 mips_dcache_wbinv_all(); 520 __asm volatile("jr %0" :: "r"(MIPS_RESET_EXC_VEC)); 521 #else 522 printf("%s\n\n", ((howto & RB_HALT) != 0) ? "halted." : "rebooting..."); 523 yamon_exit(boothowto); 524 printf("Oops, back from yamon_exit()\n\nSpinning..."); 525 #endif 526 for (;;) 527 /* spin forever */ ; /* XXX */ 528 /*NOTREACHED*/ 529 } 530 531 /* 532 * Export our interrupt map function so aupci can find it. 533 */ 534 int 535 aupci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) 536 { 537 const struct alchemy_board *board; 538 539 board = board_info(); 540 if (board->ab_pci_intr_map != NULL) 541 return (board->ab_pci_intr_map(pa, ihp)); 542 return 1; 543 } 544 545 struct aupcmcia_machdep * 546 aupcmcia_machdep(void) 547 { 548 const struct alchemy_board *board; 549 550 board = board_info(); 551 return (board->ab_pcmcia); 552 } 553 554 const struct auspi_machdep * 555 auspi_machdep(bus_addr_t ba) 556 { 557 const struct alchemy_board *board; 558 559 board = board_info(); 560 if (board->ab_spi != NULL) 561 return (board->ab_spi(ba)); 562 return NULL; 563 } 564
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