machdep.c revision 1.6.10.4
1 /* $NetBSD: machdep.c,v 1.6.10.4 2010/02/01 04:17:50 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 1.6.10.4 2010/02/01 04:17:50 matt 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 "opt_pci.h" 119 #include "pci.h" 120 121 #include <sys/param.h> 122 #include <sys/systm.h> 123 #include <sys/kernel.h> 124 #include <sys/buf.h> 125 #include <sys/reboot.h> 126 #include <sys/user.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> 132 133 #include <net/if.h> 134 #include <net/if_ether.h> 135 136 #include <uvm/uvm_extern.h> 137 138 #include <dev/cons.h> 139 140 #include "ksyms.h" 141 142 #if NKSYMS || defined(DDB) || defined(LKM) 143 #include <machine/db_machdep.h> 144 #include <ddb/db_extern.h> 145 #endif 146 147 #include <mips/cache.h> 148 #include <mips/locore.h> 149 150 #include <mips/adm5120/include/adm5120reg.h> 151 #include <mips/adm5120/include/adm5120var.h> 152 #include <mips/adm5120/include/adm5120_extiovar.h> 153 #include <mips/adm5120/include/adm5120_obiovar.h> 154 #include <mips/adm5120/include/adm5120_mainbusvar.h> 155 #include <mips/adm5120/include/adm5120_pcivar.h> 156 #include <mips/adm5120/dev/uart.h> 157 158 #ifndef MEMSIZE 159 #define MEMSIZE 4 * 1024 * 1024 160 #endif /* !MEMSIZE */ 161 162 /* Maps for VM objects. */ 163 struct vm_map *mb_map = NULL; 164 struct vm_map *phys_map = NULL; 165 166 int physmem; /* # pages of physical memory */ 167 int maxmem; /* max memory per process */ 168 169 int mem_cluster_cnt; 170 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; 171 172 struct adm5120_config adm5120_configuration; 173 174 void adm5120_setcpufreq(void); 175 176 void 177 adm5120_setcpufreq(void) 178 { 179 uint32_t v, freq; 180 181 v = SW_READ(SW_CODE_REG); 182 switch (v & CLKS_MASK) { 183 case CLKS_175MHZ: 184 freq = 175 * 1000 * 1000; 185 break; 186 case CLKS_200MHZ: 187 freq = 200 * 1000 * 1000; 188 break; 189 default: 190 panic("adm5120: cannot determine CPU clock speed"); 191 } 192 193 curcpu()->ci_cpu_freq = freq; 194 curcpu()->ci_cycles_per_hz = (freq + hz / 2) / hz / 2; 195 curcpu()->ci_divisor_delay = ((freq + 500000) / 1000000) / 2; 196 } 197 198 void mach_init(int, char **, void *, void *); /* XXX */ 199 200 static void 201 copy_args(int argc, char **argv) 202 { 203 struct adm5120_config *admc = &adm5120_configuration; 204 int i; 205 char *buf; 206 size_t buflen, rc; 207 208 buf = admc->args; 209 buflen = sizeof(admc->args); 210 211 if (argc >= __arraycount(admc->argv)) 212 panic("%s: too many boot args\n", __func__); 213 214 for (i = 0; buflen > 0 && i < argc && argv[i] != NULL; i++) { 215 admc->argv[i] = buf; 216 if ((rc = strlcpy(buf, argv[i], buflen)) >= buflen) 217 panic("%s: boot args too long\n", __func__); 218 219 buf += rc; 220 buflen -= rc; 221 *buf++ = '\0'; 222 buflen--; 223 } 224 if (i < argc) 225 panic("%s: boot args too long\n", __func__); 226 227 admc->argc = argc; 228 } 229 230 static void 231 parse_args(prop_dictionary_t properties, int argc, char **argv, 232 uint32_t *memsizep) 233 { 234 char buf[32]; 235 char *key, *val, *valend; 236 unsigned long tmp; 237 int i; 238 uint8_t enaddr[ETHER_ADDR_LEN]; 239 240 if (memsizep != NULL) 241 *memsizep = MEMSIZE; 242 243 for (i = 0; i < argc && argv[i] != NULL; i++) { 244 if (strlcpy(buf, argv[i], sizeof(buf)) >= sizeof(buf)) 245 goto err; 246 val = buf; 247 key = strsep(&val, "="); 248 if (val == NULL) 249 goto err; 250 if (strcmp(key, "mem") == 0) { 251 tmp = strtoul(val, &valend, 10); 252 if (val == valend || *valend != 'M') 253 goto err; 254 if (memsizep != NULL) 255 *memsizep = tmp * 1024 * 1024; 256 } else if (strcmp(key, "HZ") == 0) 257 ; 258 else if (strcmp(key, "gpio") == 0) { 259 prop_number_t pn; 260 261 tmp = strtoul(val, &valend, 10); 262 if (val == valend || *valend != '\0') 263 goto err; 264 if (properties == NULL) 265 continue; 266 pn = prop_number_create_unsigned_integer(tmp); 267 if (pn == NULL) { 268 printf( 269 "%s: prop_number_create_unsigned_integer\n", 270 __func__); 271 continue; 272 } 273 if (!prop_dictionary_set(properties, "initial-gpio", 274 pn)) { 275 printf("%s: prop_dictionary_set(gpio)\n", 276 __func__); 277 } 278 prop_object_release(pn); 279 } else if (strcmp(key, "kmac") == 0) { 280 prop_data_t pd; 281 282 ether_nonstatic_aton(enaddr, val); 283 if (properties == NULL) 284 continue; 285 pd = prop_data_create_data(enaddr, sizeof(enaddr)); 286 if (pd == NULL) { 287 printf("%s: prop_data_create_data\n", __func__); 288 continue; 289 } 290 if (!prop_dictionary_set(properties, "mac-addr", pd)) { 291 printf("%s: prop_dictionary_set(mac)\n", 292 __func__); 293 } 294 prop_object_release(pd); 295 } else if (strcmp(key, "board") == 0) 296 printf("Routerboard %s\n", val); 297 else if (strcmp(key, "boot") == 0) 298 ; 299 continue; 300 err: 301 printf("bad argv[%d] (%s)\n", i, argv[i]); 302 } 303 } 304 305 void 306 mach_init(int argc, char **argv, void *a2, void *a3) 307 { 308 struct adm5120_config *admc = &adm5120_configuration; 309 uint32_t memsize; 310 vaddr_t kernend; 311 312 extern char edata[], end[]; /* XXX */ 313 314 /* clear the BSS segment */ 315 kernend = mips_round_page(end); 316 memset(edata, 0, kernend - (vaddr_t)edata); 317 318 /* set CPU model info for sysctl_hw */ 319 strcpy(cpu_model, "Infineon ADM5120"); 320 321 /* 322 * Set up the exception vectors and CPU-specific function 323 * vectors early on. We need the wbflush() vector set up 324 * before comcnattach() is called (or at least before the 325 * first printf() after that is called). 326 * Sets up mips_cpu_flags that may be queried by other 327 * functions called during startup. 328 * Also clears the I+D caches. 329 */ 330 mips_vector_init(); 331 332 /* 333 * Set the VM page size. 334 */ 335 uvm_setpagesize(); 336 337 adm5120_setcpufreq(); 338 339 /* 340 * Initialize bus space tags. 341 */ 342 obio_bus_mem_init(&admc->obio_space, admc); 343 extio_bus_mem_init(&admc->extio_space, admc); 344 #if NPCI > 0 345 pciio_bus_mem_init(&admc->pciio_space, admc); 346 pcimem_bus_mem_init(&admc->pcimem_space, admc); 347 #endif 348 349 /* 350 * Initialize bus DMA tag. 351 */ 352 obio_dma_init(&admc->obio_dmat); 353 354 /* 355 * Attach serial console. 356 */ 357 uart_cnattach(); 358 359 /* 360 * Look at arguments passed to us and compute boothowto. 361 */ 362 boothowto = RB_AUTOBOOT; 363 #ifdef KADB 364 boothowto |= RB_KDB; 365 #endif 366 367 parse_args(NULL, argc, argv, &memsize); 368 369 /* 370 * Determine the memory size. 371 * 372 * Note: Reserve the first page! That's where the trap 373 * vectors are located. 374 */ 375 376 #if 0 377 if (GET_MEMSIZE(memsize) == 0) { 378 uint32_t val; 379 380 /* This does not seem to work... --dyoung */ 381 val = SW_READ(SW_MEMCONT_REG); 382 printf("SW_MEMCONT_REG: 0x%08" PRIx32 "\n", val); 383 switch (val & SDRAM_SIZE_MASK) { 384 case SDRAM_SIZE_4MBYTES: 385 memsize = 4 * 1024 * 1024; 386 break; 387 case SDRAM_SIZE_8MBYTES: 388 memsize = 8 * 1024 * 1024; 389 break; 390 case SDRAM_SIZE_16MBYTES: 391 memsize = 16 * 1024 * 1024; 392 break; 393 case SDRAM_SIZE_64MBYTES: 394 memsize = 64 * 1024 * 1024; 395 break; 396 case SDRAM_SIZE_128MBYTES: 397 memsize = 128 * 1024 * 1024; 398 break; 399 default: 400 panic("adm5120: cannot determine memory size"); 401 } 402 } 403 #endif 404 405 physmem = btoc(memsize); 406 407 mem_clusters[mem_cluster_cnt].start = PAGE_SIZE; 408 mem_clusters[mem_cluster_cnt].size = 409 memsize - mem_clusters[mem_cluster_cnt].start; 410 mem_cluster_cnt++; 411 412 /* 413 * Load the rest of the available pages into the VM system. 414 */ 415 mips_page_physload(MIPS_KSEG0_START, (vaddr_t) kernend, 416 mem_clusters, mem_cluster_cnt, NULL, 0); 417 418 /* 419 * Initialize message buffer (at end of core). 420 */ 421 mips_init_msgbuf(); 422 423 /* 424 * Initialize the virtual memory system. 425 */ 426 pmap_bootstrap(); 427 428 /* 429 * Init mapping for u page(s) for proc0. 430 */ 431 mips_init_lwp0_uarea(); 432 433 /* 434 * Initialize debuggers, and break into them, if appropriate. 435 */ 436 #if NKSYMS || defined(DDB) || defined(LKM) 437 ksyms_init(0, 0, 0); 438 #endif 439 #ifdef DDB 440 if (boothowto & RB_KDB) 441 Debugger(); 442 #endif 443 444 copy_args(argc, argv); 445 } 446 447 void 448 consinit(void) 449 { 450 451 /* 452 * Everything related to console initialization is done 453 * in mach_init(). 454 */ 455 } 456 457 void 458 cpu_startup(void) 459 { 460 struct adm5120_config *admc = &adm5120_configuration; 461 char pbuf[9]; 462 vaddr_t minaddr, maxaddr; 463 #ifdef DEBUG 464 extern int pmapdebug; /* XXX */ 465 int opmapdebug = pmapdebug; 466 467 pmapdebug = 0; /* Shut up pmap debug during bootstrap */ 468 #endif 469 470 if ((admc->properties = prop_dictionary_create()) == NULL) 471 printf("%s: prop_dictionary_create\n", __func__); 472 parse_args(admc->properties, admc->argc, admc->argv, NULL); 473 474 /* 475 * Good {morning,afternoon,evening,night}. 476 */ 477 printf("%s%s", copyright, version); 478 printf("%s\n", cpu_model); 479 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 480 printf("total memory = %s\n", pbuf); 481 482 minaddr = 0; 483 484 /* 485 * Allocate a submap for physio 486 */ 487 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 488 VM_PHYS_SIZE, 0, FALSE, NULL); 489 490 /* 491 * No need to allocate an mbuf cluster submap. Mbuf clusters 492 * are allocated via the pool allocator, and we use KSEG to 493 * map those pages. 494 */ 495 496 #ifdef DEBUG 497 pmapdebug = opmapdebug; 498 #endif 499 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 500 printf("avail memory = %s\n", pbuf); 501 } 502 503 void 504 cpu_reboot(int howto, char *bootstr) 505 { 506 static int waittime = -1; 507 508 /* Take a snapshot before clobbering any registers. */ 509 savectx(curlwp->l_addr); 510 511 /* If "always halt" was specified as a boot flag, obey. */ 512 if (boothowto & RB_HALT) 513 howto |= RB_HALT; 514 515 boothowto = howto; 516 517 /* If system is cold, just halt. */ 518 if (cold) { 519 boothowto |= RB_HALT; 520 goto haltsys; 521 } 522 523 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 524 waittime = 0; 525 526 /* 527 * Synchronize the disks.... 528 */ 529 vfs_shutdown(); 530 531 /* 532 * If we've been adjusting the clock, the todr 533 * will be out of synch; adjust it now. 534 */ 535 resettodr(); 536 } 537 538 /* Disable interrupts. */ 539 splhigh(); 540 541 if (boothowto & RB_DUMP) 542 dumpsys(); 543 544 haltsys: 545 /* Run any shutdown hooks. */ 546 doshutdownhooks(); 547 548 /* 549 * Routerboard BIOS may autoboot, so "pseudo-halt". 550 */ 551 if (boothowto & RB_HALT) { 552 printf("\n"); 553 printf("The operating system has halted.\n"); 554 printf("Please press any key to reboot.\n\n"); 555 cnpollc(1); /* For proper keyboard command handling */ 556 cngetc(); 557 cnpollc(0); 558 } 559 560 printf("reseting board...\n\n"); 561 mips_icache_sync_all(); 562 mips_dcache_wbinv_all(); 563 SW_WRITE(SW_SFTRES_REG, 0); /* reset */ 564 for (;;) 565 /* spin forever */ ; /* XXX */ 566 /*NOTREACHED*/ 567 } 568
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