machdep.c revision 1.17
1 /* $NetBSD: machdep.c,v 1.17 2010/05/19 20:41:59 christos 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 1.17 2010/05/19 20:41:59 christos 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 struct pcb *pcb0; 312 uint32_t memsize; 313 vaddr_t kernend; 314 u_long first, last; 315 vaddr_t v; 316 317 extern char edata[], end[]; /* XXX */ 318 319 /* clear the BSS segment */ 320 kernend = mips_round_page(end); 321 memset(edata, 0, kernend - (vaddr_t)edata); 322 323 /* set CPU model info for sysctl_hw */ 324 strcpy(cpu_model, "Infineon ADM5120"); 325 326 /* 327 * Set up the exception vectors and CPU-specific function 328 * vectors early on. We need the wbflush() vector set up 329 * before comcnattach() is called (or at least before the 330 * first printf() after that is called). 331 * Sets up mips_cpu_flags that may be queried by other 332 * functions called during startup. 333 * Also clears the I+D caches. 334 */ 335 mips_vector_init(); 336 337 /* 338 * Set the VM page size. 339 */ 340 uvm_setpagesize(); 341 342 adm5120_setcpufreq(); 343 344 /* 345 * Initialize bus space tags. 346 */ 347 obio_bus_mem_init(&admc->obio_space, admc); 348 extio_bus_mem_init(&admc->extio_space, admc); 349 #if NPCI > 0 350 pciio_bus_mem_init(&admc->pciio_space, admc); 351 pcimem_bus_mem_init(&admc->pcimem_space, admc); 352 #endif 353 354 /* 355 * Initialize bus DMA tag. 356 */ 357 obio_dma_init(&admc->obio_dmat); 358 359 /* 360 * Attach serial console. 361 */ 362 uart_cnattach(); 363 364 /* 365 * Look at arguments passed to us and compute boothowto. 366 */ 367 boothowto = RB_AUTOBOOT; 368 #ifdef KADB 369 boothowto |= RB_KDB; 370 #endif 371 372 parse_args(NULL, argc, argv, &memsize); 373 374 /* 375 * Determine the memory size. 376 * 377 * Note: Reserve the first page! That's where the trap 378 * vectors are located. 379 */ 380 381 #if 0 382 if (GET_MEMSIZE(memsize) == 0) { 383 uint32_t val; 384 385 /* This does not seem to work... --dyoung */ 386 val = SW_READ(SW_MEMCONT_REG); 387 printf("SW_MEMCONT_REG: 0x%08" PRIx32 "\n", val); 388 switch (val & SDRAM_SIZE_MASK) { 389 case SDRAM_SIZE_4MBYTES: 390 memsize = 4 * 1024 * 1024; 391 break; 392 case SDRAM_SIZE_8MBYTES: 393 memsize = 8 * 1024 * 1024; 394 break; 395 case SDRAM_SIZE_16MBYTES: 396 memsize = 16 * 1024 * 1024; 397 break; 398 case SDRAM_SIZE_64MBYTES: 399 memsize = 64 * 1024 * 1024; 400 break; 401 case SDRAM_SIZE_128MBYTES: 402 memsize = 128 * 1024 * 1024; 403 break; 404 default: 405 panic("adm5120: cannot determine memory size"); 406 } 407 } 408 #endif 409 410 physmem = btoc(memsize); 411 412 mem_clusters[mem_cluster_cnt].start = PAGE_SIZE; 413 mem_clusters[mem_cluster_cnt].size = 414 memsize - mem_clusters[mem_cluster_cnt].start; 415 mem_cluster_cnt++; 416 417 /* 418 * Load the rest of the available pages into the VM system. 419 */ 420 first = round_page(MIPS_KSEG0_TO_PHYS(kernend)); 421 last = mem_clusters[0].start + mem_clusters[0].size; 422 uvm_page_physload(atop(first), atop(last), atop(first), atop(last), 423 VM_FREELIST_DEFAULT); 424 425 /* 426 * Initialize message buffer (at end of core). 427 */ 428 mips_init_msgbuf(); 429 430 /* 431 * Initialize the virtual memory system. 432 */ 433 pmap_bootstrap(); 434 435 /* 436 * Allocate uarea page for lwp0 and set it. 437 */ 438 mips_init_lwp0_uarea(); 439 440 /* 441 * Initialize debuggers, and break into them, if appropriate. 442 */ 443 #ifdef DDB 444 if (boothowto & RB_KDB) 445 Debugger(); 446 #endif 447 448 copy_args(argc, argv); 449 } 450 451 void 452 consinit(void) 453 { 454 455 /* 456 * Everything related to console initialization is done 457 * in mach_init(). 458 */ 459 } 460 461 void 462 cpu_startup(void) 463 { 464 struct adm5120_config *admc = &adm5120_configuration; 465 char pbuf[9]; 466 vaddr_t minaddr, maxaddr; 467 #ifdef DEBUG 468 extern int pmapdebug; /* XXX */ 469 int opmapdebug = pmapdebug; 470 471 pmapdebug = 0; /* Shut up pmap debug during bootstrap */ 472 #endif 473 474 if ((admc->properties = prop_dictionary_create()) == NULL) 475 printf("%s: prop_dictionary_create\n", __func__); 476 parse_args(admc->properties, admc->argc, admc->argv, NULL); 477 478 /* 479 * Good {morning,afternoon,evening,night}. 480 */ 481 printf("%s%s", copyright, version); 482 printf("%s\n", cpu_model); 483 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 484 printf("total memory = %s\n", pbuf); 485 486 minaddr = 0; 487 488 /* 489 * Allocate a submap for physio 490 */ 491 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 492 VM_PHYS_SIZE, 0, FALSE, NULL); 493 494 /* 495 * No need to allocate an mbuf cluster submap. Mbuf clusters 496 * are allocated via the pool allocator, and we use KSEG to 497 * map those pages. 498 */ 499 500 #ifdef DEBUG 501 pmapdebug = opmapdebug; 502 #endif 503 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 504 printf("avail memory = %s\n", pbuf); 505 } 506 507 void 508 cpu_reboot(int howto, char *bootstr) 509 { 510 static int waittime = -1; 511 512 /* Take a snapshot before clobbering any registers. */ 513 if (curproc) 514 savectx(curpcb); 515 516 /* If "always halt" was specified as a boot flag, obey. */ 517 if (boothowto & RB_HALT) 518 howto |= RB_HALT; 519 520 boothowto = howto; 521 522 /* If system is cold, just halt. */ 523 if (cold) { 524 boothowto |= RB_HALT; 525 goto haltsys; 526 } 527 528 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 529 waittime = 0; 530 531 /* 532 * Synchronize the disks.... 533 */ 534 vfs_shutdown(); 535 536 /* 537 * If we've been adjusting the clock, the todr 538 * will be out of synch; adjust it now. 539 */ 540 resettodr(); 541 } 542 543 /* Disable interrupts. */ 544 splhigh(); 545 546 if (boothowto & RB_DUMP) 547 dumpsys(); 548 549 haltsys: 550 /* Run any shutdown hooks. */ 551 doshutdownhooks(); 552 553 pmf_system_shutdown(boothowto); 554 555 /* 556 * Routerboard BIOS may autoboot, so "pseudo-halt". 557 */ 558 if (boothowto & RB_HALT) { 559 printf("\n"); 560 printf("The operating system has halted.\n"); 561 printf("Please press any key to reboot.\n\n"); 562 cnpollc(1); /* For proper keyboard command handling */ 563 cngetc(); 564 cnpollc(0); 565 } 566 567 printf("reseting board...\n\n"); 568 mips_icache_sync_all(); 569 mips_dcache_wbinv_all(); 570 SW_WRITE(SW_SFTRES_REG, 0); /* reset */ 571 for (;;) 572 /* spin forever */ ; /* XXX */ 573 /*NOTREACHED*/ 574 } 575
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