machdep.c revision 1.38
1 /* $NetBSD: machdep.c,v 1.38 2008/11/11 06:46:42 dyoung 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 1.38 2008/11/11 06:46:42 dyoung Exp $"); 111 112 #include "opt_ddb.h" 113 #include "opt_kgdb.h" 114 115 #include "opt_memsize.h" 116 #include "opt_ethaddr.h" 117 118 #include <sys/param.h> 119 #include <sys/systm.h> 120 #include <sys/kernel.h> 121 #include <sys/buf.h> 122 #include <sys/reboot.h> 123 #include <sys/user.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(LKM) 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 struct user *proc0paddr; 166 167 /* Our exported CPU info; we can have only one. */ 168 struct cpu_info cpu_info_store; 169 170 /* Maps for VM objects. */ 171 struct vm_map *mb_map = NULL; 172 struct vm_map *phys_map = NULL; 173 174 int physmem; /* # pages of physical memory */ 175 int maxmem; /* max memory per process */ 176 177 int mem_cluster_cnt; 178 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; 179 180 yamon_env_var *yamon_envp; 181 struct mips_bus_space alchemy_cpuregt; 182 183 void mach_init(int, char **, yamon_env_var *, u_long); /* XXX */ 184 185 void 186 mach_init(int argc, char **argv, yamon_env_var *envp, u_long memsize) 187 { 188 bus_space_handle_t sh; 189 void *kernend; 190 const char *cp; 191 u_long first, last; 192 void *v; 193 int freqok, howto, i; 194 const struct alchemy_board *board; 195 196 extern char edata[], end[]; /* XXX */ 197 198 board = board_info(); 199 KASSERT(board != NULL); 200 201 /* clear the BSS segment */ 202 kernend = (void *)mips_round_page(end); 203 memset(edata, 0, (char *)kernend - edata); 204 205 /* set CPU model info for sysctl_hw */ 206 strcpy(cpu_model, board->ab_name); 207 208 /* save the yamon environment pointer */ 209 yamon_envp = envp; 210 211 /* Use YAMON callbacks for early console I/O */ 212 cn_tab = &yamon_promcd; 213 214 /* 215 * Set up the exception vectors and CPU-specific function 216 * vectors early on. We need the wbflush() vector set up 217 * before comcnattach() is called (or at least before the 218 * first printf() after that is called). 219 * Sets up mips_cpu_flags that may be queried by other 220 * functions called during startup. 221 * Also clears the I+D caches. 222 */ 223 mips_vector_init(); 224 225 /* 226 * Set the VM page size. 227 */ 228 uvm_setpagesize(); 229 230 /* 231 * Use YAMON's CPU frequency if available. 232 */ 233 freqok = yamon_setcpufreq(1); 234 235 /* 236 * Initialize bus space tags. 237 */ 238 au_cpureg_bus_mem_init(&alchemy_cpuregt, &alchemy_cpuregt); 239 aubus_st = &alchemy_cpuregt; 240 241 /* 242 * Calibrate the timer if YAMON failed to tell us. 243 */ 244 if (!freqok) { 245 bus_space_map(aubus_st, PC_BASE, PC_SIZE, 0, &sh); 246 au_cal_timers(aubus_st, sh); 247 bus_space_unmap(aubus_st, sh, PC_SIZE); 248 } 249 250 /* 251 * Perform board-specific initialization. 252 */ 253 board->ab_init(); 254 255 /* 256 * Bring up the console. 257 */ 258 #if NCOM > 0 259 #ifdef CONSPEED 260 if (aucomcnrate == 0) 261 aucomcnrate = CONSPEED; 262 #else /* !CONSPEED */ 263 /* 264 * Learn default console speed. We use the YAMON environment, 265 * though we could probably also figure it out by checking the 266 * aucom registers directly. 267 */ 268 if ((aucomcnrate == 0) && ((cp = yamon_getenv("modetty0")) != NULL)) 269 aucomcnrate = strtoul(cp, NULL, 0); 270 271 if (aucomcnrate == 0) { 272 printf("FATAL: `modetty0' YAMON variable not set. Set it\n"); 273 printf(" to the speed of the console and try again.\n"); 274 printf(" Or, build a kernel with the `CONSPEED' " 275 "option.\n"); 276 panic("mach_init"); 277 } 278 #endif /* CONSPEED */ 279 280 /* 281 * Delay to allow firmware putchars to complete. 282 * FIFO depth * character time. 283 * character time = (1000000 / (defaultrate / 10)) 284 */ 285 delay(160000000 / aucomcnrate); 286 if (com_aubus_cnattach(UART0_BASE, aucomcnrate) != 0) 287 panic("mach_init: unable to initialize serial console"); 288 289 #else /* NCOM > 0 */ 290 panic("mach_init: not configured to use serial console"); 291 #endif /* NAUCOM > 0 */ 292 293 /* 294 * Look at arguments passed to us and compute boothowto. 295 */ 296 boothowto = RB_AUTOBOOT; 297 #ifdef KADB 298 boothowto |= RB_KDB; 299 #endif 300 for (i = 1; i < argc; i++) { 301 for (cp = argv[i]; *cp; cp++) { 302 /* Ignore superfluous '-', if there is one */ 303 if (*cp == '-') 304 continue; 305 306 howto = 0; 307 BOOT_FLAG(*cp, howto); 308 if (! howto) 309 printf("bootflag '%c' not recognised\n", *cp); 310 else 311 boothowto |= howto; 312 } 313 } 314 315 /* 316 * Determine the memory size. Use the `memsize' PMON 317 * variable. If that's not available, panic. 318 * 319 * Note: Reserve the first page! That's where the trap 320 * vectors are located. 321 */ 322 323 #if defined(MEMSIZE) 324 memsize = MEMSIZE; 325 #else 326 if (memsize == 0) { 327 if ((cp = yamon_getenv("memsize")) != NULL) 328 memsize = strtoul(cp, NULL, 0); 329 else { 330 printf("FATAL: `memsize' YAMON variable not set. Set it to\n"); 331 printf(" the amount of memory (in MB) and try again.\n"); 332 printf(" Or, build a kernel with the `MEMSIZE' " 333 "option.\n"); 334 panic("mach_init"); 335 } 336 } 337 #endif /* MEMSIZE */ 338 printf("Memory size: 0x%08lx\n", memsize); 339 physmem = btoc(memsize); 340 341 mem_clusters[mem_cluster_cnt].start = PAGE_SIZE; 342 mem_clusters[mem_cluster_cnt].size = 343 memsize - mem_clusters[mem_cluster_cnt].start; 344 mem_cluster_cnt++; 345 346 /* 347 * Load the rest of the available pages into the VM system. 348 */ 349 first = round_page(MIPS_KSEG0_TO_PHYS(kernend)); 350 last = mem_clusters[0].start + mem_clusters[0].size; 351 uvm_page_physload(atop(first), atop(last), atop(first), atop(last), 352 VM_FREELIST_DEFAULT); 353 354 /* 355 * Initialize message buffer (at end of core). 356 */ 357 mips_init_msgbuf(); 358 359 /* 360 * Initialize the virtual memory system. 361 */ 362 pmap_bootstrap(); 363 364 /* 365 * Init mapping for u page(s) for proc0. 366 */ 367 v = (void *) uvm_pageboot_alloc(USPACE); 368 lwp0.l_addr = proc0paddr = (struct user *)v; 369 lwp0.l_md.md_regs = (struct frame *)((char *)v + USPACE) - 1; 370 proc0paddr->u_pcb.pcb_context[11] = 371 MIPS_INT_MASK | MIPS_SR_INT_IE; /* SR */ 372 373 /* 374 * Initialize debuggers, and break into them, if appropriate. 375 */ 376 #if NKSYMS || defined(DDB) || defined(LKM) 377 ksyms_init(0, 0, 0); 378 #endif 379 #ifdef DDB 380 if (boothowto & RB_KDB) 381 Debugger(); 382 #endif 383 } 384 385 void 386 consinit(void) 387 { 388 389 /* 390 * Everything related to console initialization is done 391 * in mach_init(). 392 */ 393 } 394 395 void 396 cpu_startup(void) 397 { 398 char pbuf[9]; 399 vaddr_t minaddr, maxaddr; 400 #ifdef DEBUG 401 extern int pmapdebug; /* XXX */ 402 int opmapdebug = pmapdebug; 403 404 pmapdebug = 0; /* Shut up pmap debug during bootstrap */ 405 #endif 406 407 /* 408 * Good {morning,afternoon,evening,night}. 409 */ 410 printf("%s%s", copyright, version); 411 printf("%s\n", cpu_model); 412 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 413 printf("total memory = %s\n", pbuf); 414 415 minaddr = 0; 416 417 /* 418 * Allocate a submap for physio 419 */ 420 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 421 VM_PHYS_SIZE, 0, false, NULL); 422 423 /* 424 * No need to allocate an mbuf cluster submap. Mbuf clusters 425 * are allocated via the pool allocator, and we use KSEG to 426 * map those pages. 427 */ 428 429 #ifdef DEBUG 430 pmapdebug = opmapdebug; 431 #endif 432 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 433 printf("avail memory = %s\n", pbuf); 434 } 435 436 void 437 cpu_reboot(int howto, char *bootstr) 438 { 439 static int waittime = -1; 440 const struct alchemy_board *board; 441 442 /* Take a snapshot before clobbering any registers. */ 443 if (curproc) 444 savectx((struct user *)curpcb); 445 446 board = board_info(); 447 KASSERT(board != NULL); 448 449 /* If "always halt" was specified as a boot flag, obey. */ 450 if (boothowto & RB_HALT) 451 howto |= RB_HALT; 452 453 boothowto = howto; 454 455 /* If system is cold, just halt. */ 456 if (cold) { 457 boothowto |= RB_HALT; 458 goto haltsys; 459 } 460 461 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 462 waittime = 0; 463 464 /* 465 * Synchronize the disks.... 466 */ 467 vfs_shutdown(); 468 469 /* 470 * If we've been adjusting the clock, the todr 471 * will be out of synch; adjust it now. 472 */ 473 resettodr(); 474 } 475 476 /* Disable interrupts. */ 477 splhigh(); 478 479 if (boothowto & RB_DUMP) 480 dumpsys(); 481 482 haltsys: 483 /* Run any shutdown hooks. */ 484 doshutdownhooks(); 485 486 pmf_system_shutdown(boothowto); 487 488 if ((boothowto & RB_POWERDOWN) == RB_POWERDOWN) 489 if (board && board->ab_poweroff) 490 board->ab_poweroff(); 491 492 /* 493 * YAMON may autoboot (depending on settings), and we cannot pass 494 * flags to it (at least I haven't figured out how to yet), so 495 * we "pseudo-halt" now. 496 */ 497 if (boothowto & RB_HALT) { 498 printf("\n"); 499 printf("The operating system has halted.\n"); 500 printf("Please press any key to reboot.\n\n"); 501 cnpollc(1); /* For proper keyboard command handling */ 502 cngetc(); 503 cnpollc(0); 504 } 505 506 printf("reseting board...\n\n"); 507 508 /* 509 * Try to use board-specific reset logic, which might involve a better 510 * hardware reset. 511 */ 512 if (board->ab_reboot) 513 board->ab_reboot(); 514 515 #if 1 516 /* XXX 517 * For some reason we are leaving the ethernet MAC in a state where 518 * YAMON isn't happy with it. So just call the reset vector (grr, 519 * Alchemy YAMON doesn't have a "reset" command). 520 */ 521 mips_icache_sync_all(); 522 mips_dcache_wbinv_all(); 523 __asm volatile("jr %0" :: "r"(MIPS_RESET_EXC_VEC)); 524 #else 525 printf("%s\n\n", ((howto & RB_HALT) != 0) ? "halted." : "rebooting..."); 526 yamon_exit(boothowto); 527 printf("Oops, back from yamon_exit()\n\nSpinning..."); 528 #endif 529 for (;;) 530 /* spin forever */ ; /* XXX */ 531 /*NOTREACHED*/ 532 } 533 534 /* 535 * Export our interrupt map function so aupci can find it. 536 */ 537 int 538 aupci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) 539 { 540 const struct alchemy_board *board; 541 542 board = board_info(); 543 if (board->ab_pci_intr_map != NULL) 544 return (board->ab_pci_intr_map(pa, ihp)); 545 return 1; 546 } 547 548 struct aupcmcia_machdep * 549 aupcmcia_machdep(void) 550 { 551 const struct alchemy_board *board; 552 553 board = board_info(); 554 return (board->ab_pcmcia); 555 } 556 557 const struct auspi_machdep * 558 auspi_machdep(bus_addr_t ba) 559 { 560 const struct alchemy_board *board; 561 562 board = board_info(); 563 if (board->ab_spi != NULL) 564 return (board->ab_spi(ba)); 565 return NULL; 566 } 567
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