machdep.c revision 1.13
1 /* $NetBSD: machdep.c,v 1.13 2009/11/27 03:23:08 rmind 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 1.13 2009/11/27 03:23:08 rmind 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 *mb_map = NULL; 168 struct vm_map *phys_map = NULL; 169 170 int maxmem; /* max memory per process */ 171 172 int mem_cluster_cnt; 173 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; 174 175 struct adm5120_config adm5120_configuration; 176 177 void adm5120_setcpufreq(void); 178 179 void 180 adm5120_setcpufreq(void) 181 { 182 uint32_t v, freq; 183 184 v = SW_READ(SW_CODE_REG); 185 switch (v & CLKS_MASK) { 186 case CLKS_175MHZ: 187 freq = 175 * 1000 * 1000; 188 break; 189 case CLKS_200MHZ: 190 freq = 200 * 1000 * 1000; 191 break; 192 default: 193 panic("adm5120: cannot determine CPU clock speed"); 194 } 195 196 curcpu()->ci_cpu_freq = freq; 197 curcpu()->ci_cycles_per_hz = (freq + hz / 2) / hz / 2; 198 curcpu()->ci_divisor_delay = ((freq + 500000) / 1000000) / 2; 199 } 200 201 void mach_init(int, char **, void *, void *); /* XXX */ 202 203 static void 204 copy_args(int argc, char **argv) 205 { 206 struct adm5120_config *admc = &adm5120_configuration; 207 int i; 208 char *buf; 209 size_t buflen, rc; 210 211 buf = admc->args; 212 buflen = sizeof(admc->args); 213 214 if (argc >= __arraycount(admc->argv)) 215 panic("%s: too many boot args\n", __func__); 216 217 for (i = 0; buflen > 0 && i < argc && argv[i] != NULL; i++) { 218 admc->argv[i] = buf; 219 if ((rc = strlcpy(buf, argv[i], buflen)) >= buflen) 220 panic("%s: boot args too long\n", __func__); 221 222 buf += rc; 223 buflen -= rc; 224 *buf++ = '\0'; 225 buflen--; 226 } 227 if (i < argc) 228 panic("%s: boot args too long\n", __func__); 229 230 admc->argc = argc; 231 } 232 233 static void 234 parse_args(prop_dictionary_t properties, int argc, char **argv, 235 uint32_t *memsizep) 236 { 237 char buf[32]; 238 char *key, *val, *valend; 239 unsigned long tmp; 240 int i; 241 uint8_t enaddr[ETHER_ADDR_LEN]; 242 243 if (memsizep != NULL) 244 *memsizep = MEMSIZE; 245 246 for (i = 0; i < argc && argv[i] != NULL; i++) { 247 if (strlcpy(buf, argv[i], sizeof(buf)) >= sizeof(buf)) 248 goto err; 249 val = buf; 250 key = strsep(&val, "="); 251 if (val == NULL) 252 goto err; 253 if (strcmp(key, "mem") == 0) { 254 tmp = strtoul(val, &valend, 10); 255 if (val == valend || *valend != 'M') 256 goto err; 257 if (memsizep != NULL) 258 *memsizep = tmp * 1024 * 1024; 259 } else if (strcmp(key, "HZ") == 0) 260 ; 261 else if (strcmp(key, "gpio") == 0) { 262 prop_number_t pn; 263 264 tmp = strtoul(val, &valend, 10); 265 if (val == valend || *valend != '\0') 266 goto err; 267 if (properties == NULL) 268 continue; 269 pn = prop_number_create_unsigned_integer(tmp); 270 if (pn == NULL) { 271 printf( 272 "%s: prop_number_create_unsigned_integer\n", 273 __func__); 274 continue; 275 } 276 if (!prop_dictionary_set(properties, "initial-gpio", 277 pn)) { 278 printf("%s: prop_dictionary_set(gpio)\n", 279 __func__); 280 } 281 prop_object_release(pn); 282 } else if (strcmp(key, "kmac") == 0) { 283 prop_data_t pd; 284 285 ether_nonstatic_aton(enaddr, val); 286 if (properties == NULL) 287 continue; 288 pd = prop_data_create_data(enaddr, sizeof(enaddr)); 289 if (pd == NULL) { 290 printf("%s: prop_data_create_data\n", __func__); 291 continue; 292 } 293 if (!prop_dictionary_set(properties, "mac-addr", pd)) { 294 printf("%s: prop_dictionary_set(mac)\n", 295 __func__); 296 } 297 prop_object_release(pd); 298 } else if (strcmp(key, "board") == 0) 299 printf("Routerboard %s\n", val); 300 else if (strcmp(key, "boot") == 0) 301 ; 302 continue; 303 err: 304 printf("bad argv[%d] (%s)\n", i, argv[i]); 305 } 306 } 307 308 void 309 mach_init(int argc, char **argv, void *a2, void *a3) 310 { 311 struct adm5120_config *admc = &adm5120_configuration; 312 struct pcb *pcb0; 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 * Allocate uarea page for lwp0 and set it. 438 */ 439 v = uvm_pageboot_alloc(USPACE); 440 uvm_lwp_setuarea(&lwp0, v); 441 442 pcb0 = lwp_getpcb(&lwp0); 443 pcb0->pcb_context[11] = MIPS_INT_MASK | MIPS_SR_INT_IE; /* SR */ 444 445 lwp0.l_md.md_regs = (struct frame *)(v + USPACE) - 1; 446 447 /* 448 * Initialize debuggers, and break into them, if appropriate. 449 */ 450 #ifdef DDB 451 if (boothowto & RB_KDB) 452 Debugger(); 453 #endif 454 455 copy_args(argc, argv); 456 } 457 458 void 459 consinit(void) 460 { 461 462 /* 463 * Everything related to console initialization is done 464 * in mach_init(). 465 */ 466 } 467 468 void 469 cpu_startup(void) 470 { 471 struct adm5120_config *admc = &adm5120_configuration; 472 char pbuf[9]; 473 vaddr_t minaddr, maxaddr; 474 #ifdef DEBUG 475 extern int pmapdebug; /* XXX */ 476 int opmapdebug = pmapdebug; 477 478 pmapdebug = 0; /* Shut up pmap debug during bootstrap */ 479 #endif 480 481 if ((admc->properties = prop_dictionary_create()) == NULL) 482 printf("%s: prop_dictionary_create\n", __func__); 483 parse_args(admc->properties, admc->argc, admc->argv, NULL); 484 485 /* 486 * Good {morning,afternoon,evening,night}. 487 */ 488 printf("%s%s", copyright, version); 489 printf("%s\n", cpu_model); 490 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 491 printf("total memory = %s\n", pbuf); 492 493 minaddr = 0; 494 495 /* 496 * Allocate a submap for physio 497 */ 498 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 499 VM_PHYS_SIZE, 0, FALSE, NULL); 500 501 /* 502 * No need to allocate an mbuf cluster submap. Mbuf clusters 503 * are allocated via the pool allocator, and we use KSEG to 504 * map those pages. 505 */ 506 507 #ifdef DEBUG 508 pmapdebug = opmapdebug; 509 #endif 510 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 511 printf("avail memory = %s\n", pbuf); 512 } 513 514 void 515 cpu_reboot(int howto, char *bootstr) 516 { 517 static int waittime = -1; 518 519 /* Take a snapshot before clobbering any registers. */ 520 if (curproc) 521 savectx(curpcb); 522 523 /* If "always halt" was specified as a boot flag, obey. */ 524 if (boothowto & RB_HALT) 525 howto |= RB_HALT; 526 527 boothowto = howto; 528 529 /* If system is cold, just halt. */ 530 if (cold) { 531 boothowto |= RB_HALT; 532 goto haltsys; 533 } 534 535 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 536 waittime = 0; 537 538 /* 539 * Synchronize the disks.... 540 */ 541 vfs_shutdown(); 542 543 /* 544 * If we've been adjusting the clock, the todr 545 * will be out of synch; adjust it now. 546 */ 547 resettodr(); 548 } 549 550 /* Disable interrupts. */ 551 splhigh(); 552 553 if (boothowto & RB_DUMP) 554 dumpsys(); 555 556 haltsys: 557 /* Run any shutdown hooks. */ 558 doshutdownhooks(); 559 560 pmf_system_shutdown(boothowto); 561 562 /* 563 * Routerboard BIOS may autoboot, so "pseudo-halt". 564 */ 565 if (boothowto & RB_HALT) { 566 printf("\n"); 567 printf("The operating system has halted.\n"); 568 printf("Please press any key to reboot.\n\n"); 569 cnpollc(1); /* For proper keyboard command handling */ 570 cngetc(); 571 cnpollc(0); 572 } 573 574 printf("reseting board...\n\n"); 575 mips_icache_sync_all(); 576 mips_dcache_wbinv_all(); 577 SW_WRITE(SW_SFTRES_REG, 0); /* reset */ 578 for (;;) 579 /* spin forever */ ; /* XXX */ 580 /*NOTREACHED*/ 581 } 582
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