machdep.c revision 1.18
1 /* $NetBSD: machdep.c,v 1.18 2010/12/15 00:04:28 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 1.18 2010/12/15 00:04:28 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/mount.h> 128 #include <sys/kcore.h> 129 #include <sys/boot_flag.h> 130 #include <sys/termios.h> 131 #include <sys/ksyms.h> 132 #include <sys/device.h> 133 134 #include <net/if.h> 135 #include <net/if_ether.h> 136 137 #include <uvm/uvm_extern.h> 138 139 #include <dev/cons.h> 140 141 #include "ksyms.h" 142 143 #if NKSYMS || defined(DDB) || defined(MODULAR) 144 #include <machine/db_machdep.h> 145 #include <ddb/db_extern.h> 146 #endif 147 148 #include <mips/cache.h> 149 #include <mips/locore.h> 150 151 #include <mips/adm5120/include/adm5120reg.h> 152 #include <mips/adm5120/include/adm5120var.h> 153 #include <mips/adm5120/include/adm5120_extiovar.h> 154 #include <mips/adm5120/include/adm5120_obiovar.h> 155 #include <mips/adm5120/include/adm5120_mainbusvar.h> 156 #include <mips/adm5120/include/adm5120_pcivar.h> 157 #include <mips/adm5120/dev/uart.h> 158 159 #ifndef MEMSIZE 160 #define MEMSIZE 4 * 1024 * 1024 161 #endif /* !MEMSIZE */ 162 163 /* Our exported CPU info; we can have only one. */ 164 struct cpu_info cpu_info_store; 165 166 /* Maps for VM objects. */ 167 struct vm_map *phys_map = NULL; 168 169 int maxmem; /* max memory per process */ 170 171 int mem_cluster_cnt; 172 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; 173 174 struct adm5120_config adm5120_configuration; 175 176 void adm5120_setcpufreq(void); 177 178 void 179 adm5120_setcpufreq(void) 180 { 181 uint32_t v, freq; 182 183 v = SW_READ(SW_CODE_REG); 184 switch (v & CLKS_MASK) { 185 case CLKS_175MHZ: 186 freq = 175 * 1000 * 1000; 187 break; 188 case CLKS_200MHZ: 189 freq = 200 * 1000 * 1000; 190 break; 191 default: 192 panic("adm5120: cannot determine CPU clock speed"); 193 } 194 195 curcpu()->ci_cpu_freq = freq; 196 curcpu()->ci_cycles_per_hz = (freq + hz / 2) / hz / 2; 197 curcpu()->ci_divisor_delay = ((freq + 500000) / 1000000) / 2; 198 } 199 200 void mach_init(int, char **, void *, void *); /* XXX */ 201 202 static void 203 copy_args(int argc, char **argv) 204 { 205 struct adm5120_config *admc = &adm5120_configuration; 206 int i; 207 char *buf; 208 size_t buflen, rc; 209 210 buf = admc->args; 211 buflen = sizeof(admc->args); 212 213 if (argc >= __arraycount(admc->argv)) 214 panic("%s: too many boot args\n", __func__); 215 216 for (i = 0; buflen > 0 && i < argc && argv[i] != NULL; i++) { 217 admc->argv[i] = buf; 218 if ((rc = strlcpy(buf, argv[i], buflen)) >= buflen) 219 panic("%s: boot args too long\n", __func__); 220 221 buf += rc; 222 buflen -= rc; 223 *buf++ = '\0'; 224 buflen--; 225 } 226 if (i < argc) 227 panic("%s: boot args too long\n", __func__); 228 229 admc->argc = argc; 230 } 231 232 static void 233 parse_args(prop_dictionary_t properties, int argc, char **argv, 234 uint32_t *memsizep) 235 { 236 char buf[32]; 237 char *key, *val, *valend; 238 unsigned long tmp; 239 int i; 240 uint8_t enaddr[ETHER_ADDR_LEN]; 241 242 if (memsizep != NULL) 243 *memsizep = MEMSIZE; 244 245 for (i = 0; i < argc && argv[i] != NULL; i++) { 246 if (strlcpy(buf, argv[i], sizeof(buf)) >= sizeof(buf)) 247 goto err; 248 val = buf; 249 key = strsep(&val, "="); 250 if (val == NULL) 251 goto err; 252 if (strcmp(key, "mem") == 0) { 253 tmp = strtoul(val, &valend, 10); 254 if (val == valend || *valend != 'M') 255 goto err; 256 if (memsizep != NULL) 257 *memsizep = tmp * 1024 * 1024; 258 } else if (strcmp(key, "HZ") == 0) 259 ; 260 else if (strcmp(key, "gpio") == 0) { 261 prop_number_t pn; 262 263 tmp = strtoul(val, &valend, 10); 264 if (val == valend || *valend != '\0') 265 goto err; 266 if (properties == NULL) 267 continue; 268 pn = prop_number_create_unsigned_integer(tmp); 269 if (pn == NULL) { 270 printf( 271 "%s: prop_number_create_unsigned_integer\n", 272 __func__); 273 continue; 274 } 275 if (!prop_dictionary_set(properties, "initial-gpio", 276 pn)) { 277 printf("%s: prop_dictionary_set(gpio)\n", 278 __func__); 279 } 280 prop_object_release(pn); 281 } else if (strcmp(key, "kmac") == 0) { 282 prop_data_t pd; 283 284 (void)ether_aton_r(enaddr, sizeof(enaddr), val); 285 if (properties == NULL) 286 continue; 287 pd = prop_data_create_data(enaddr, sizeof(enaddr)); 288 if (pd == NULL) { 289 printf("%s: prop_data_create_data\n", __func__); 290 continue; 291 } 292 if (!prop_dictionary_set(properties, "mac-address", pd)) { 293 printf("%s: prop_dictionary_set(mac)\n", 294 __func__); 295 } 296 prop_object_release(pd); 297 } else if (strcmp(key, "board") == 0) 298 printf("Routerboard %s\n", val); 299 else if (strcmp(key, "boot") == 0) 300 ; 301 continue; 302 err: 303 printf("bad argv[%d] (%s)\n", i, argv[i]); 304 } 305 } 306 307 void 308 mach_init(int argc, char **argv, void *a2, void *a3) 309 { 310 struct adm5120_config *admc = &adm5120_configuration; 311 uint32_t memsize; 312 vaddr_t kernend; 313 u_long first, last; 314 315 extern char edata[], end[]; /* XXX */ 316 317 /* clear the BSS segment */ 318 kernend = mips_round_page(end); 319 memset(edata, 0, kernend - (vaddr_t)edata); 320 321 /* set CPU model info for sysctl_hw */ 322 strcpy(cpu_model, "Infineon ADM5120"); 323 324 /* 325 * Set up the exception vectors and CPU-specific function 326 * vectors early on. We need the wbflush() vector set up 327 * before comcnattach() is called (or at least before the 328 * first printf() after that is called). 329 * Sets up mips_cpu_flags that may be queried by other 330 * functions called during startup. 331 * Also clears the I+D caches. 332 */ 333 mips_vector_init(); 334 335 /* 336 * Set the VM page size. 337 */ 338 uvm_setpagesize(); 339 340 adm5120_setcpufreq(); 341 342 /* 343 * Initialize bus space tags. 344 */ 345 obio_bus_mem_init(&admc->obio_space, admc); 346 extio_bus_mem_init(&admc->extio_space, admc); 347 #if NPCI > 0 348 pciio_bus_mem_init(&admc->pciio_space, admc); 349 pcimem_bus_mem_init(&admc->pcimem_space, admc); 350 #endif 351 352 /* 353 * Initialize bus DMA tag. 354 */ 355 obio_dma_init(&admc->obio_dmat); 356 357 /* 358 * Attach serial console. 359 */ 360 uart_cnattach(); 361 362 /* 363 * Look at arguments passed to us and compute boothowto. 364 */ 365 boothowto = RB_AUTOBOOT; 366 #ifdef KADB 367 boothowto |= RB_KDB; 368 #endif 369 370 parse_args(NULL, argc, argv, &memsize); 371 372 /* 373 * Determine the memory size. 374 * 375 * Note: Reserve the first page! That's where the trap 376 * vectors are located. 377 */ 378 379 #if 0 380 if (GET_MEMSIZE(memsize) == 0) { 381 uint32_t val; 382 383 /* This does not seem to work... --dyoung */ 384 val = SW_READ(SW_MEMCONT_REG); 385 printf("SW_MEMCONT_REG: 0x%08" PRIx32 "\n", val); 386 switch (val & SDRAM_SIZE_MASK) { 387 case SDRAM_SIZE_4MBYTES: 388 memsize = 4 * 1024 * 1024; 389 break; 390 case SDRAM_SIZE_8MBYTES: 391 memsize = 8 * 1024 * 1024; 392 break; 393 case SDRAM_SIZE_16MBYTES: 394 memsize = 16 * 1024 * 1024; 395 break; 396 case SDRAM_SIZE_64MBYTES: 397 memsize = 64 * 1024 * 1024; 398 break; 399 case SDRAM_SIZE_128MBYTES: 400 memsize = 128 * 1024 * 1024; 401 break; 402 default: 403 panic("adm5120: cannot determine memory size"); 404 } 405 } 406 #endif 407 408 physmem = btoc(memsize); 409 410 mem_clusters[mem_cluster_cnt].start = PAGE_SIZE; 411 mem_clusters[mem_cluster_cnt].size = 412 memsize - mem_clusters[mem_cluster_cnt].start; 413 mem_cluster_cnt++; 414 415 /* 416 * Load the rest of the available pages into the VM system. 417 */ 418 first = round_page(MIPS_KSEG0_TO_PHYS(kernend)); 419 last = mem_clusters[0].start + mem_clusters[0].size; 420 uvm_page_physload(atop(first), atop(last), atop(first), atop(last), 421 VM_FREELIST_DEFAULT); 422 423 /* 424 * Initialize message buffer (at end of core). 425 */ 426 mips_init_msgbuf(); 427 428 /* 429 * Initialize the virtual memory system. 430 */ 431 pmap_bootstrap(); 432 433 /* 434 * Allocate uarea page for lwp0 and set it. 435 */ 436 mips_init_lwp0_uarea(); 437 438 /* 439 * Initialize debuggers, and break into them, if appropriate. 440 */ 441 #ifdef DDB 442 if (boothowto & RB_KDB) 443 Debugger(); 444 #endif 445 446 copy_args(argc, argv); 447 } 448 449 void 450 consinit(void) 451 { 452 453 /* 454 * Everything related to console initialization is done 455 * in mach_init(). 456 */ 457 } 458 459 void 460 cpu_startup(void) 461 { 462 struct adm5120_config *admc = &adm5120_configuration; 463 char pbuf[9]; 464 vaddr_t minaddr, maxaddr; 465 #ifdef DEBUG 466 extern int pmapdebug; /* XXX */ 467 int opmapdebug = pmapdebug; 468 469 pmapdebug = 0; /* Shut up pmap debug during bootstrap */ 470 #endif 471 472 if ((admc->properties = prop_dictionary_create()) == NULL) 473 printf("%s: prop_dictionary_create\n", __func__); 474 parse_args(admc->properties, admc->argc, admc->argv, NULL); 475 476 /* 477 * Good {morning,afternoon,evening,night}. 478 */ 479 printf("%s%s", copyright, version); 480 printf("%s\n", cpu_model); 481 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 482 printf("total memory = %s\n", pbuf); 483 484 minaddr = 0; 485 486 /* 487 * Allocate a submap for physio 488 */ 489 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 490 VM_PHYS_SIZE, 0, FALSE, NULL); 491 492 /* 493 * No need to allocate an mbuf cluster submap. Mbuf clusters 494 * are allocated via the pool allocator, and we use KSEG to 495 * map those pages. 496 */ 497 498 #ifdef DEBUG 499 pmapdebug = opmapdebug; 500 #endif 501 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 502 printf("avail memory = %s\n", pbuf); 503 } 504 505 void 506 cpu_reboot(int howto, char *bootstr) 507 { 508 static int waittime = -1; 509 510 /* Take a snapshot before clobbering any registers. */ 511 if (curproc) 512 savectx(curpcb); 513 514 /* If "always halt" was specified as a boot flag, obey. */ 515 if (boothowto & RB_HALT) 516 howto |= RB_HALT; 517 518 boothowto = howto; 519 520 /* If system is cold, just halt. */ 521 if (cold) { 522 boothowto |= RB_HALT; 523 goto haltsys; 524 } 525 526 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 527 waittime = 0; 528 529 /* 530 * Synchronize the disks.... 531 */ 532 vfs_shutdown(); 533 534 /* 535 * If we've been adjusting the clock, the todr 536 * will be out of synch; adjust it now. 537 */ 538 resettodr(); 539 } 540 541 /* Disable interrupts. */ 542 splhigh(); 543 544 if (boothowto & RB_DUMP) 545 dumpsys(); 546 547 haltsys: 548 /* Run any shutdown hooks. */ 549 doshutdownhooks(); 550 551 pmf_system_shutdown(boothowto); 552 553 /* 554 * Routerboard BIOS may autoboot, so "pseudo-halt". 555 */ 556 if (boothowto & RB_HALT) { 557 printf("\n"); 558 printf("The operating system has halted.\n"); 559 printf("Please press any key to reboot.\n\n"); 560 cnpollc(1); /* For proper keyboard command handling */ 561 cngetc(); 562 cnpollc(0); 563 } 564 565 printf("reseting board...\n\n"); 566 mips_icache_sync_all(); 567 mips_dcache_wbinv_all(); 568 SW_WRITE(SW_SFTRES_REG, 0); /* reset */ 569 for (;;) 570 /* spin forever */ ; /* XXX */ 571 /*NOTREACHED*/ 572 } 573
Indexes created Tue Oct 21 12:09:54 GMT 2025