machdep.c revision 1.12
1 /* $NetBSD: machdep.c,v 1.12 2009/11/26 00:19:16 matt Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 Ruslan Ermilov and Vsevolod Lobko. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or 8 * without modification, are permitted provided that the following 9 * conditions are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above 13 * copyright notice, this list of conditions and the following 14 * disclaimer in the documentation and/or other materials provided 15 * with the distribution. 16 * 3. The names of the authors may not be used to endorse or promote 17 * products derived from this software without specific prior 18 * written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY 21 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 23 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 25 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 27 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 29 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 30 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 31 * 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 1.12 2009/11/26 00:19:16 matt 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 "opt_pci.h" 120 #include "pci.h" 121 122 #include <sys/param.h> 123 #include <sys/systm.h> 124 #include <sys/kernel.h> 125 #include <sys/buf.h> 126 #include <sys/reboot.h> 127 #include <sys/user.h> 128 #include <sys/mount.h> 129 #include <sys/kcore.h> 130 #include <sys/boot_flag.h> 131 #include <sys/termios.h> 132 #include <sys/ksyms.h> 133 #include <sys/device.h> 134 135 #include <net/if.h> 136 #include <net/if_ether.h> 137 138 #include <uvm/uvm_extern.h> 139 140 #include <dev/cons.h> 141 142 #include "ksyms.h" 143 144 #if NKSYMS || defined(DDB) || defined(MODULAR) 145 #include <machine/db_machdep.h> 146 #include <ddb/db_extern.h> 147 #endif 148 149 #include <mips/cache.h> 150 #include <mips/locore.h> 151 152 #include <mips/adm5120/include/adm5120reg.h> 153 #include <mips/adm5120/include/adm5120var.h> 154 #include <mips/adm5120/include/adm5120_extiovar.h> 155 #include <mips/adm5120/include/adm5120_obiovar.h> 156 #include <mips/adm5120/include/adm5120_mainbusvar.h> 157 #include <mips/adm5120/include/adm5120_pcivar.h> 158 #include <mips/adm5120/dev/uart.h> 159 160 #ifndef MEMSIZE 161 #define MEMSIZE 4 * 1024 * 1024 162 #endif /* !MEMSIZE */ 163 164 /* Our exported CPU info; we can have only one. */ 165 struct cpu_info cpu_info_store; 166 167 /* Maps for VM objects. */ 168 struct vm_map *mb_map = NULL; 169 struct vm_map *phys_map = NULL; 170 171 int maxmem; /* max memory per process */ 172 173 int mem_cluster_cnt; 174 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; 175 176 struct adm5120_config adm5120_configuration; 177 178 void adm5120_setcpufreq(void); 179 180 void 181 adm5120_setcpufreq(void) 182 { 183 uint32_t v, freq; 184 185 v = SW_READ(SW_CODE_REG); 186 switch (v & CLKS_MASK) { 187 case CLKS_175MHZ: 188 freq = 175 * 1000 * 1000; 189 break; 190 case CLKS_200MHZ: 191 freq = 200 * 1000 * 1000; 192 break; 193 default: 194 panic("adm5120: cannot determine CPU clock speed"); 195 } 196 197 curcpu()->ci_cpu_freq = freq; 198 curcpu()->ci_cycles_per_hz = (freq + hz / 2) / hz / 2; 199 curcpu()->ci_divisor_delay = ((freq + 500000) / 1000000) / 2; 200 } 201 202 void mach_init(int, char **, void *, void *); /* XXX */ 203 204 static void 205 copy_args(int argc, char **argv) 206 { 207 struct adm5120_config *admc = &adm5120_configuration; 208 int i; 209 char *buf; 210 size_t buflen, rc; 211 212 buf = admc->args; 213 buflen = sizeof(admc->args); 214 215 if (argc >= __arraycount(admc->argv)) 216 panic("%s: too many boot args\n", __func__); 217 218 for (i = 0; buflen > 0 && i < argc && argv[i] != NULL; i++) { 219 admc->argv[i] = buf; 220 if ((rc = strlcpy(buf, argv[i], buflen)) >= buflen) 221 panic("%s: boot args too long\n", __func__); 222 223 buf += rc; 224 buflen -= rc; 225 *buf++ = '\0'; 226 buflen--; 227 } 228 if (i < argc) 229 panic("%s: boot args too long\n", __func__); 230 231 admc->argc = argc; 232 } 233 234 static void 235 parse_args(prop_dictionary_t properties, int argc, char **argv, 236 uint32_t *memsizep) 237 { 238 char buf[32]; 239 char *key, *val, *valend; 240 unsigned long tmp; 241 int i; 242 uint8_t enaddr[ETHER_ADDR_LEN]; 243 244 if (memsizep != NULL) 245 *memsizep = MEMSIZE; 246 247 for (i = 0; i < argc && argv[i] != NULL; i++) { 248 if (strlcpy(buf, argv[i], sizeof(buf)) >= sizeof(buf)) 249 goto err; 250 val = buf; 251 key = strsep(&val, "="); 252 if (val == NULL) 253 goto err; 254 if (strcmp(key, "mem") == 0) { 255 tmp = strtoul(val, &valend, 10); 256 if (val == valend || *valend != 'M') 257 goto err; 258 if (memsizep != NULL) 259 *memsizep = tmp * 1024 * 1024; 260 } else if (strcmp(key, "HZ") == 0) 261 ; 262 else if (strcmp(key, "gpio") == 0) { 263 prop_number_t pn; 264 265 tmp = strtoul(val, &valend, 10); 266 if (val == valend || *valend != '\0') 267 goto err; 268 if (properties == NULL) 269 continue; 270 pn = prop_number_create_unsigned_integer(tmp); 271 if (pn == NULL) { 272 printf( 273 "%s: prop_number_create_unsigned_integer\n", 274 __func__); 275 continue; 276 } 277 if (!prop_dictionary_set(properties, "initial-gpio", 278 pn)) { 279 printf("%s: prop_dictionary_set(gpio)\n", 280 __func__); 281 } 282 prop_object_release(pn); 283 } else if (strcmp(key, "kmac") == 0) { 284 prop_data_t pd; 285 286 ether_nonstatic_aton(enaddr, val); 287 if (properties == NULL) 288 continue; 289 pd = prop_data_create_data(enaddr, sizeof(enaddr)); 290 if (pd == NULL) { 291 printf("%s: prop_data_create_data\n", __func__); 292 continue; 293 } 294 if (!prop_dictionary_set(properties, "mac-addr", pd)) { 295 printf("%s: prop_dictionary_set(mac)\n", 296 __func__); 297 } 298 prop_object_release(pd); 299 } else if (strcmp(key, "board") == 0) 300 printf("Routerboard %s\n", val); 301 else if (strcmp(key, "boot") == 0) 302 ; 303 continue; 304 err: 305 printf("bad argv[%d] (%s)\n", i, argv[i]); 306 } 307 } 308 309 void 310 mach_init(int argc, char **argv, void *a2, void *a3) 311 { 312 struct adm5120_config *admc = &adm5120_configuration; 313 uint32_t memsize; 314 vaddr_t kernend; 315 u_long first, last; 316 vaddr_t v; 317 318 extern char edata[], end[]; /* XXX */ 319 320 /* clear the BSS segment */ 321 kernend = mips_round_page(end); 322 memset(edata, 0, kernend - (vaddr_t)edata); 323 324 /* set CPU model info for sysctl_hw */ 325 strcpy(cpu_model, "Infineon ADM5120"); 326 327 /* 328 * Set up the exception vectors and CPU-specific function 329 * vectors early on. We need the wbflush() vector set up 330 * before comcnattach() is called (or at least before the 331 * first printf() after that is called). 332 * Sets up mips_cpu_flags that may be queried by other 333 * functions called during startup. 334 * Also clears the I+D caches. 335 */ 336 mips_vector_init(); 337 338 /* 339 * Set the VM page size. 340 */ 341 uvm_setpagesize(); 342 343 adm5120_setcpufreq(); 344 345 /* 346 * Initialize bus space tags. 347 */ 348 obio_bus_mem_init(&admc->obio_space, admc); 349 extio_bus_mem_init(&admc->extio_space, admc); 350 #if NPCI > 0 351 pciio_bus_mem_init(&admc->pciio_space, admc); 352 pcimem_bus_mem_init(&admc->pcimem_space, admc); 353 #endif 354 355 /* 356 * Initialize bus DMA tag. 357 */ 358 obio_dma_init(&admc->obio_dmat); 359 360 /* 361 * Attach serial console. 362 */ 363 uart_cnattach(); 364 365 /* 366 * Look at arguments passed to us and compute boothowto. 367 */ 368 boothowto = RB_AUTOBOOT; 369 #ifdef KADB 370 boothowto |= RB_KDB; 371 #endif 372 373 parse_args(NULL, argc, argv, &memsize); 374 375 /* 376 * Determine the memory size. 377 * 378 * Note: Reserve the first page! That's where the trap 379 * vectors are located. 380 */ 381 382 #if 0 383 if (GET_MEMSIZE(memsize) == 0) { 384 uint32_t val; 385 386 /* This does not seem to work... --dyoung */ 387 val = SW_READ(SW_MEMCONT_REG); 388 printf("SW_MEMCONT_REG: 0x%08" PRIx32 "\n", val); 389 switch (val & SDRAM_SIZE_MASK) { 390 case SDRAM_SIZE_4MBYTES: 391 memsize = 4 * 1024 * 1024; 392 break; 393 case SDRAM_SIZE_8MBYTES: 394 memsize = 8 * 1024 * 1024; 395 break; 396 case SDRAM_SIZE_16MBYTES: 397 memsize = 16 * 1024 * 1024; 398 break; 399 case SDRAM_SIZE_64MBYTES: 400 memsize = 64 * 1024 * 1024; 401 break; 402 case SDRAM_SIZE_128MBYTES: 403 memsize = 128 * 1024 * 1024; 404 break; 405 default: 406 panic("adm5120: cannot determine memory size"); 407 } 408 } 409 #endif 410 411 physmem = btoc(memsize); 412 413 mem_clusters[mem_cluster_cnt].start = PAGE_SIZE; 414 mem_clusters[mem_cluster_cnt].size = 415 memsize - mem_clusters[mem_cluster_cnt].start; 416 mem_cluster_cnt++; 417 418 /* 419 * Load the rest of the available pages into the VM system. 420 */ 421 first = round_page(MIPS_KSEG0_TO_PHYS(kernend)); 422 last = mem_clusters[0].start + mem_clusters[0].size; 423 uvm_page_physload(atop(first), atop(last), atop(first), atop(last), 424 VM_FREELIST_DEFAULT); 425 426 /* 427 * Initialize message buffer (at end of core). 428 */ 429 mips_init_msgbuf(); 430 431 /* 432 * Initialize the virtual memory system. 433 */ 434 pmap_bootstrap(); 435 436 /* 437 * Init mapping for u page(s) for proc0. 438 */ 439 v = uvm_pageboot_alloc(USPACE); 440 lwp0.l_addr = (struct user *)v; 441 lwp0.l_md.md_regs = (struct frame *)(v + USPACE) - 1; 442 lwp0.l_addr->u_pcb.pcb_context[11] = 443 MIPS_INT_MASK | MIPS_SR_INT_IE; /* SR */ 444 445 /* 446 * Initialize debuggers, and break into them, if appropriate. 447 */ 448 #ifdef DDB 449 if (boothowto & RB_KDB) 450 Debugger(); 451 #endif 452 453 copy_args(argc, argv); 454 } 455 456 void 457 consinit(void) 458 { 459 460 /* 461 * Everything related to console initialization is done 462 * in mach_init(). 463 */ 464 } 465 466 void 467 cpu_startup(void) 468 { 469 struct adm5120_config *admc = &adm5120_configuration; 470 char pbuf[9]; 471 vaddr_t minaddr, maxaddr; 472 #ifdef DEBUG 473 extern int pmapdebug; /* XXX */ 474 int opmapdebug = pmapdebug; 475 476 pmapdebug = 0; /* Shut up pmap debug during bootstrap */ 477 #endif 478 479 if ((admc->properties = prop_dictionary_create()) == NULL) 480 printf("%s: prop_dictionary_create\n", __func__); 481 parse_args(admc->properties, admc->argc, admc->argv, NULL); 482 483 /* 484 * Good {morning,afternoon,evening,night}. 485 */ 486 printf("%s%s", copyright, version); 487 printf("%s\n", cpu_model); 488 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 489 printf("total memory = %s\n", pbuf); 490 491 minaddr = 0; 492 493 /* 494 * Allocate a submap for physio 495 */ 496 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 497 VM_PHYS_SIZE, 0, FALSE, NULL); 498 499 /* 500 * No need to allocate an mbuf cluster submap. Mbuf clusters 501 * are allocated via the pool allocator, and we use KSEG to 502 * map those pages. 503 */ 504 505 #ifdef DEBUG 506 pmapdebug = opmapdebug; 507 #endif 508 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 509 printf("avail memory = %s\n", pbuf); 510 } 511 512 void 513 cpu_reboot(int howto, char *bootstr) 514 { 515 static int waittime = -1; 516 517 /* Take a snapshot before clobbering any registers. */ 518 if (curproc) 519 savectx((struct user *)curpcb); 520 521 /* If "always halt" was specified as a boot flag, obey. */ 522 if (boothowto & RB_HALT) 523 howto |= RB_HALT; 524 525 boothowto = howto; 526 527 /* If system is cold, just halt. */ 528 if (cold) { 529 boothowto |= RB_HALT; 530 goto haltsys; 531 } 532 533 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 534 waittime = 0; 535 536 /* 537 * Synchronize the disks.... 538 */ 539 vfs_shutdown(); 540 541 /* 542 * If we've been adjusting the clock, the todr 543 * will be out of synch; adjust it now. 544 */ 545 resettodr(); 546 } 547 548 /* Disable interrupts. */ 549 splhigh(); 550 551 if (boothowto & RB_DUMP) 552 dumpsys(); 553 554 haltsys: 555 /* Run any shutdown hooks. */ 556 doshutdownhooks(); 557 558 pmf_system_shutdown(boothowto); 559 560 /* 561 * Routerboard BIOS may autoboot, so "pseudo-halt". 562 */ 563 if (boothowto & RB_HALT) { 564 printf("\n"); 565 printf("The operating system has halted.\n"); 566 printf("Please press any key to reboot.\n\n"); 567 cnpollc(1); /* For proper keyboard command handling */ 568 cngetc(); 569 cnpollc(0); 570 } 571 572 printf("reseting board...\n\n"); 573 mips_icache_sync_all(); 574 mips_dcache_wbinv_all(); 575 SW_WRITE(SW_SFTRES_REG, 0); /* reset */ 576 for (;;) 577 /* spin forever */ ; /* XXX */ 578 /*NOTREACHED*/ 579 } 580
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