machdep.c revision 1.29
1 /* $NetBSD: machdep.c,v 1.29 2006/07/13 22:56:01 gdamore 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 1.29 2006/07/13 22:56:01 gdamore 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> 129 130 #include <net/if.h> 131 #include <net/if_ether.h> 132 133 #include <uvm/uvm_extern.h> 134 135 #include <dev/cons.h> 136 137 #include "ksyms.h" 138 139 #if NKSYMS || defined(DDB) || defined(LKM) 140 #include <machine/db_machdep.h> 141 #include <ddb/db_extern.h> 142 #endif 143 144 #include <mips/cache.h> 145 #include <mips/locore.h> 146 #include <machine/yamon.h> 147 148 #include <evbmips/alchemy/board.h> 149 #include <mips/alchemy/dev/aupcivar.h> 150 #include <mips/alchemy/dev/aupcmciavar.h> 151 #include <mips/alchemy/include/aureg.h> 152 #include <mips/alchemy/include/auvar.h> 153 #include <mips/alchemy/include/aubusvar.h> 154 155 #include "com.h" 156 #if NCOM > 0 157 158 int aucomcnrate = 0; 159 #endif /* NAUCOM > 0 */ 160 161 #include "ohci.h" 162 163 struct user *proc0paddr; 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 *exec_map = NULL; 170 struct vm_map *mb_map = NULL; 171 struct vm_map *phys_map = NULL; 172 173 int physmem; /* # pages of physical memory */ 174 int maxmem; /* max memory per process */ 175 176 int mem_cluster_cnt; 177 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; 178 179 yamon_env_var *yamon_envp; 180 struct mips_bus_space alchemy_cpuregt; 181 182 void mach_init(int, char **, yamon_env_var *, u_long); /* XXX */ 183 184 void 185 mach_init(int argc, char **argv, yamon_env_var *envp, u_long memsize) 186 { 187 bus_space_handle_t sh; 188 caddr_t kernend; 189 const char *cp; 190 u_long first, last; 191 caddr_t v; 192 int freqok, howto, i; 193 const struct alchemy_board *board; 194 195 extern char edata[], end[]; /* XXX */ 196 197 board = board_info(); 198 KASSERT(board != NULL); 199 200 /* clear the BSS segment */ 201 kernend = (caddr_t)mips_round_page(end); 202 memset(edata, 0, kernend - (caddr_t)edata); 203 204 /* set CPU model info for sysctl_hw */ 205 strcpy(cpu_model, board->ab_name); 206 207 /* save the yamon environment pointer */ 208 yamon_envp = envp; 209 210 /* Use YAMON callbacks for early console I/O */ 211 cn_tab = &yamon_promcd; 212 213 /* 214 * Set up the exception vectors and CPU-specific function 215 * vectors early on. We need the wbflush() vector set up 216 * before comcnattach() is called (or at least before the 217 * first printf() after that is called). 218 * Sets up mips_cpu_flags that may be queried by other 219 * functions called during startup. 220 * Also clears the I+D caches. 221 */ 222 mips_vector_init(); 223 224 /* 225 * Set the VM page size. 226 */ 227 uvm_setpagesize(); 228 229 /* 230 * Use YAMON's CPU frequency if available. 231 */ 232 freqok = yamon_setcpufreq(1); 233 234 /* 235 * Initialize bus space tags. 236 */ 237 au_cpureg_bus_mem_init(&alchemy_cpuregt, &alchemy_cpuregt); 238 aubus_st = &alchemy_cpuregt; 239 240 /* 241 * Calibrate the timer if YAMON failed to tell us. 242 */ 243 if (!freqok) { 244 bus_space_map(aubus_st, PC_BASE, PC_SIZE, 0, &sh); 245 au_cal_timers(aubus_st, sh); 246 bus_space_unmap(aubus_st, sh, PC_SIZE); 247 } 248 249 /* 250 * Perform board-specific initialization. 251 */ 252 board->ab_init(); 253 254 /* 255 * Bring up the console. 256 */ 257 #if NCOM > 0 258 #ifdef CONSPEED 259 if (aucomcnrate == 0) 260 aucomcnrate = CONSPEED; 261 #else /* !CONSPEED */ 262 /* 263 * Learn default console speed. We use the YAMON environment, 264 * though we could probably also figure it out by checking the 265 * aucom registers directly. 266 */ 267 if ((aucomcnrate == 0) && ((cp = yamon_getenv("modetty0")) != NULL)) 268 aucomcnrate = strtoul(cp, NULL, 0); 269 270 if (aucomcnrate == 0) { 271 printf("FATAL: `modetty0' YAMON variable not set. Set it\n"); 272 printf(" to the speed of the console and try again.\n"); 273 printf(" Or, build a kernel with the `CONSPEED' " 274 "option.\n"); 275 panic("mach_init"); 276 } 277 #endif /* CONSPEED */ 278 279 /* 280 * Delay to allow firmware putchars to complete. 281 * FIFO depth * character time. 282 * character time = (1000000 / (defaultrate / 10)) 283 */ 284 delay(160000000 / aucomcnrate); 285 if (com_aubus_cnattach(UART0_BASE, aucomcnrate) != 0) 286 panic("mach_init: unable to initialize serial console"); 287 288 #else /* NCOM > 0 */ 289 panic("mach_init: not configured to use serial console"); 290 #endif /* NAUCOM > 0 */ 291 292 /* 293 * Look at arguments passed to us and compute boothowto. 294 */ 295 boothowto = RB_AUTOBOOT; 296 #ifdef KADB 297 boothowto |= RB_KDB; 298 #endif 299 for (i = 1; i < argc; i++) { 300 for (cp = argv[i]; *cp; cp++) { 301 /* Ignore superfluous '-', if there is one */ 302 if (*cp == '-') 303 continue; 304 305 howto = 0; 306 BOOT_FLAG(*cp, howto); 307 if (! howto) 308 printf("bootflag '%c' not recognised\n", *cp); 309 else 310 boothowto |= howto; 311 } 312 } 313 314 /* 315 * Determine the memory size. Use the `memsize' PMON 316 * variable. If that's not available, panic. 317 * 318 * Note: Reserve the first page! That's where the trap 319 * vectors are located. 320 */ 321 322 #if defined(MEMSIZE) 323 memsize = MEMSIZE; 324 #else 325 if (memsize == 0) { 326 if ((cp = yamon_getenv("memsize")) != NULL) 327 memsize = strtoul(cp, NULL, 0); 328 else { 329 printf("FATAL: `memsize' YAMON variable not set. Set it to\n"); 330 printf(" the amount of memory (in MB) and try again.\n"); 331 printf(" Or, build a kernel with the `MEMSIZE' " 332 "option.\n"); 333 panic("mach_init"); 334 } 335 } 336 #endif /* MEMSIZE */ 337 printf("Memory size: 0x%08lx\n", memsize); 338 physmem = btoc(memsize); 339 340 mem_clusters[mem_cluster_cnt].start = PAGE_SIZE; 341 mem_clusters[mem_cluster_cnt].size = 342 memsize - mem_clusters[mem_cluster_cnt].start; 343 mem_cluster_cnt++; 344 345 /* 346 * Load the rest of the available pages into the VM system. 347 */ 348 first = round_page(MIPS_KSEG0_TO_PHYS(kernend)); 349 last = mem_clusters[0].start + mem_clusters[0].size; 350 uvm_page_physload(atop(first), atop(last), atop(first), atop(last), 351 VM_FREELIST_DEFAULT); 352 353 /* 354 * Initialize message buffer (at end of core). 355 */ 356 mips_init_msgbuf(); 357 358 /* 359 * Initialize the virtual memory system. 360 */ 361 pmap_bootstrap(); 362 363 /* 364 * Init mapping for u page(s) for proc0. 365 */ 366 v = (caddr_t) uvm_pageboot_alloc(USPACE); 367 lwp0.l_addr = proc0paddr = (struct user *)v; 368 lwp0.l_md.md_regs = (struct frame *)(v + USPACE) - 1; 369 curpcb = &lwp0.l_addr->u_pcb; 370 curpcb->pcb_context[11] = MIPS_INT_MASK | MIPS_SR_INT_IE; /* SR */ 371 372 /* 373 * Initialize debuggers, and break into them, if appropriate. 374 */ 375 #if NKSYMS || defined(DDB) || defined(LKM) 376 ksyms_init(0, 0, 0); 377 #endif 378 #ifdef DDB 379 if (boothowto & RB_KDB) 380 Debugger(); 381 #endif 382 } 383 384 void 385 consinit(void) 386 { 387 388 /* 389 * Everything related to console initialization is done 390 * in mach_init(). 391 */ 392 } 393 394 void 395 cpu_startup(void) 396 { 397 char pbuf[9]; 398 vaddr_t minaddr, maxaddr; 399 #ifdef DEBUG 400 extern int pmapdebug; /* XXX */ 401 int opmapdebug = pmapdebug; 402 403 pmapdebug = 0; /* Shut up pmap debug during bootstrap */ 404 #endif 405 406 /* 407 * Good {morning,afternoon,evening,night}. 408 */ 409 printf("%s%s", copyright, version); 410 printf("%s\n", cpu_model); 411 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 412 printf("total memory = %s\n", pbuf); 413 414 minaddr = 0; 415 /* 416 * Allocate a submap for exec arguments. This map effectively 417 * limits the number of processes exec'ing at any time. 418 */ 419 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 420 16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 421 422 /* 423 * Allocate a submap for physio 424 */ 425 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 426 VM_PHYS_SIZE, 0, FALSE, NULL); 427 428 /* 429 * No need to allocate an mbuf cluster submap. Mbuf clusters 430 * are allocated via the pool allocator, and we use KSEG to 431 * map those pages. 432 */ 433 434 #ifdef DEBUG 435 pmapdebug = opmapdebug; 436 #endif 437 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 438 printf("avail memory = %s\n", pbuf); 439 } 440 441 void 442 cpu_reboot(int howto, char *bootstr) 443 { 444 static int waittime = -1; 445 const struct alchemy_board *board; 446 447 /* Take a snapshot before clobbering any registers. */ 448 if (curproc) 449 savectx((struct user *)curpcb); 450 451 board = board_info(); 452 KASSERT(board != NULL); 453 454 /* If "always halt" was specified as a boot flag, obey. */ 455 if (boothowto & RB_HALT) 456 howto |= RB_HALT; 457 458 boothowto = howto; 459 460 /* If system is cold, just halt. */ 461 if (cold) { 462 boothowto |= RB_HALT; 463 goto haltsys; 464 } 465 466 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 467 waittime = 0; 468 469 /* 470 * Synchronize the disks.... 471 */ 472 vfs_shutdown(); 473 474 /* 475 * If we've been adjusting the clock, the todr 476 * will be out of synch; adjust it now. 477 */ 478 resettodr(); 479 } 480 481 /* Disable interrupts. */ 482 splhigh(); 483 484 if (boothowto & RB_DUMP) 485 dumpsys(); 486 487 haltsys: 488 /* Run any shutdown hooks. */ 489 doshutdownhooks(); 490 491 if ((boothowto & RB_POWERDOWN) == RB_POWERDOWN) 492 if (board && board->ab_poweroff) 493 board->ab_poweroff(); 494 495 /* 496 * YAMON may autoboot (depending on settings), and we cannot pass 497 * flags to it (at least I haven't figured out how to yet), so 498 * we "pseudo-halt" now. 499 */ 500 if (boothowto & RB_HALT) { 501 printf("\n"); 502 printf("The operating system has halted.\n"); 503 printf("Please press any key to reboot.\n\n"); 504 cnpollc(1); /* For proper keyboard command handling */ 505 cngetc(); 506 cnpollc(0); 507 } 508 509 /* 510 * Try to use board-specific reset logic, which might involve a better 511 * hardware reset. 512 */ 513 if (board->ab_reboot) 514 board->ab_reboot(); 515 516 #if 1 517 /* XXX 518 * For some reason we are leaving the ethernet MAC in a state where 519 * YAMON isn't happy with it. So just call the reset vector (grr, 520 * Alchemy YAMON doesn't have a "reset" command). 521 */ 522 printf("reseting board...\n\n"); 523 mips_icache_sync_all(); 524 mips_dcache_wbinv_all(); 525 __asm volatile("jr %0" :: "r"(MIPS_RESET_EXC_VEC)); 526 #else 527 printf("%s\n\n", ((howto & RB_HALT) != 0) ? "halted." : "rebooting..."); 528 yamon_exit(boothowto); 529 printf("Oops, back from yamon_exit()\n\nSpinning..."); 530 #endif 531 for (;;) 532 /* spin forever */ ; /* XXX */ 533 /*NOTREACHED*/ 534 } 535 536 /* 537 * Export our interrupt map function so aupci can find it. 538 */ 539 int 540 aupci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) 541 { 542 const struct alchemy_board *board; 543 544 board = board_info(); 545 if (board->ab_pci_intr_map != NULL) 546 return (board->ab_pci_intr_map(pa, ihp)); 547 return 1; 548 } 549 550 struct aupcmcia_machdep * 551 aupcmcia_machdep(void) 552 { 553 const struct alchemy_board *board; 554 555 board = board_info(); 556 return (board->ab_pcmcia); 557 } 558
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