machdep.c revision 1.7
1 /* $NetBSD: machdep.c,v 1.7 2008/11/11 06:46:42 dyoung 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 1.7 2008/11/11 06:46:42 dyoung 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 #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(LKM) 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 struct user *proc0paddr; 164 165 /* Our exported CPU info; we can have only one. */ 166 struct cpu_info cpu_info_store; 167 168 /* Maps for VM objects. */ 169 struct vm_map *mb_map = NULL; 170 struct vm_map *phys_map = NULL; 171 172 int physmem; /* # pages of physical memory */ 173 int maxmem; /* max memory per process */ 174 175 int mem_cluster_cnt; 176 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; 177 178 struct adm5120_config adm5120_configuration; 179 180 void adm5120_setcpufreq(void); 181 182 void 183 adm5120_setcpufreq(void) 184 { 185 uint32_t v, freq; 186 187 v = SW_READ(SW_CODE_REG); 188 switch (v & CLKS_MASK) { 189 case CLKS_175MHZ: 190 freq = 175 * 1000 * 1000; 191 break; 192 case CLKS_200MHZ: 193 freq = 200 * 1000 * 1000; 194 break; 195 default: 196 panic("adm5120: cannot determine CPU clock speed"); 197 } 198 199 curcpu()->ci_cpu_freq = freq; 200 curcpu()->ci_cycles_per_hz = (freq + hz / 2) / hz / 2; 201 curcpu()->ci_divisor_delay = ((freq + 500000) / 1000000) / 2; 202 } 203 204 void mach_init(int, char **, void *, void *); /* XXX */ 205 206 static void 207 copy_args(int argc, char **argv) 208 { 209 struct adm5120_config *admc = &adm5120_configuration; 210 int i; 211 char *buf; 212 size_t buflen, rc; 213 214 buf = admc->args; 215 buflen = sizeof(admc->args); 216 217 if (argc >= __arraycount(admc->argv)) 218 panic("%s: too many boot args\n", __func__); 219 220 for (i = 0; buflen > 0 && i < argc && argv[i] != NULL; i++) { 221 admc->argv[i] = buf; 222 if ((rc = strlcpy(buf, argv[i], buflen)) >= buflen) 223 panic("%s: boot args too long\n", __func__); 224 225 buf += rc; 226 buflen -= rc; 227 *buf++ = '\0'; 228 buflen--; 229 } 230 if (i < argc) 231 panic("%s: boot args too long\n", __func__); 232 233 admc->argc = argc; 234 } 235 236 static void 237 parse_args(prop_dictionary_t properties, int argc, char **argv, 238 uint32_t *memsizep) 239 { 240 char buf[32]; 241 char *key, *val, *valend; 242 unsigned long tmp; 243 int i; 244 uint8_t enaddr[ETHER_ADDR_LEN]; 245 246 if (memsizep != NULL) 247 *memsizep = MEMSIZE; 248 249 for (i = 0; i < argc && argv[i] != NULL; i++) { 250 if (strlcpy(buf, argv[i], sizeof(buf)) >= sizeof(buf)) 251 goto err; 252 val = buf; 253 key = strsep(&val, "="); 254 if (val == NULL) 255 goto err; 256 if (strcmp(key, "mem") == 0) { 257 tmp = strtoul(val, &valend, 10); 258 if (val == valend || *valend != 'M') 259 goto err; 260 if (memsizep != NULL) 261 *memsizep = tmp * 1024 * 1024; 262 } else if (strcmp(key, "HZ") == 0) 263 ; 264 else if (strcmp(key, "gpio") == 0) { 265 prop_number_t pn; 266 267 tmp = strtoul(val, &valend, 10); 268 if (val == valend || *valend != '\0') 269 goto err; 270 if (properties == NULL) 271 continue; 272 pn = prop_number_create_unsigned_integer(tmp); 273 if (pn == NULL) { 274 printf( 275 "%s: prop_number_create_unsigned_integer\n", 276 __func__); 277 continue; 278 } 279 if (!prop_dictionary_set(properties, "initial-gpio", 280 pn)) { 281 printf("%s: prop_dictionary_set(gpio)\n", 282 __func__); 283 } 284 prop_object_release(pn); 285 } else if (strcmp(key, "kmac") == 0) { 286 prop_data_t pd; 287 288 ether_nonstatic_aton(enaddr, val); 289 if (properties == NULL) 290 continue; 291 pd = prop_data_create_data(enaddr, sizeof(enaddr)); 292 if (pd == NULL) { 293 printf("%s: prop_data_create_data\n", __func__); 294 continue; 295 } 296 if (!prop_dictionary_set(properties, "mac-addr", pd)) { 297 printf("%s: prop_dictionary_set(mac)\n", 298 __func__); 299 } 300 prop_object_release(pd); 301 } else if (strcmp(key, "board") == 0) 302 printf("Routerboard %s\n", val); 303 else if (strcmp(key, "boot") == 0) 304 ; 305 continue; 306 err: 307 printf("bad argv[%d] (%s)\n", i, argv[i]); 308 } 309 } 310 311 void 312 mach_init(int argc, char **argv, void *a2, void *a3) 313 { 314 struct adm5120_config *admc = &adm5120_configuration; 315 uint32_t memsize; 316 vaddr_t kernend; 317 u_long first, last; 318 vaddr_t v; 319 320 extern char edata[], end[]; /* XXX */ 321 322 /* clear the BSS segment */ 323 kernend = mips_round_page(end); 324 memset(edata, 0, kernend - (vaddr_t)edata); 325 326 /* set CPU model info for sysctl_hw */ 327 strcpy(cpu_model, "Infineon ADM5120"); 328 329 /* 330 * Set up the exception vectors and CPU-specific function 331 * vectors early on. We need the wbflush() vector set up 332 * before comcnattach() is called (or at least before the 333 * first printf() after that is called). 334 * Sets up mips_cpu_flags that may be queried by other 335 * functions called during startup. 336 * Also clears the I+D caches. 337 */ 338 mips_vector_init(); 339 340 /* 341 * Set the VM page size. 342 */ 343 uvm_setpagesize(); 344 345 adm5120_setcpufreq(); 346 347 /* 348 * Initialize bus space tags. 349 */ 350 obio_bus_mem_init(&admc->obio_space, admc); 351 extio_bus_mem_init(&admc->extio_space, admc); 352 #if NPCI > 0 353 pciio_bus_mem_init(&admc->pciio_space, admc); 354 pcimem_bus_mem_init(&admc->pcimem_space, admc); 355 #endif 356 357 /* 358 * Initialize bus DMA tag. 359 */ 360 obio_dma_init(&admc->obio_dmat); 361 362 /* 363 * Attach serial console. 364 */ 365 uart_cnattach(); 366 367 /* 368 * Look at arguments passed to us and compute boothowto. 369 */ 370 boothowto = RB_AUTOBOOT; 371 #ifdef KADB 372 boothowto |= RB_KDB; 373 #endif 374 375 parse_args(NULL, argc, argv, &memsize); 376 377 /* 378 * Determine the memory size. 379 * 380 * Note: Reserve the first page! That's where the trap 381 * vectors are located. 382 */ 383 384 #if 0 385 if (GET_MEMSIZE(memsize) == 0) { 386 uint32_t val; 387 388 /* This does not seem to work... --dyoung */ 389 val = SW_READ(SW_MEMCONT_REG); 390 printf("SW_MEMCONT_REG: 0x%08" PRIx32 "\n", val); 391 switch (val & SDRAM_SIZE_MASK) { 392 case SDRAM_SIZE_4MBYTES: 393 memsize = 4 * 1024 * 1024; 394 break; 395 case SDRAM_SIZE_8MBYTES: 396 memsize = 8 * 1024 * 1024; 397 break; 398 case SDRAM_SIZE_16MBYTES: 399 memsize = 16 * 1024 * 1024; 400 break; 401 case SDRAM_SIZE_64MBYTES: 402 memsize = 64 * 1024 * 1024; 403 break; 404 case SDRAM_SIZE_128MBYTES: 405 memsize = 128 * 1024 * 1024; 406 break; 407 default: 408 panic("adm5120: cannot determine memory size"); 409 } 410 } 411 #endif 412 413 physmem = btoc(memsize); 414 415 mem_clusters[mem_cluster_cnt].start = PAGE_SIZE; 416 mem_clusters[mem_cluster_cnt].size = 417 memsize - mem_clusters[mem_cluster_cnt].start; 418 mem_cluster_cnt++; 419 420 /* 421 * Load the rest of the available pages into the VM system. 422 */ 423 first = round_page(MIPS_KSEG0_TO_PHYS(kernend)); 424 last = mem_clusters[0].start + mem_clusters[0].size; 425 uvm_page_physload(atop(first), atop(last), atop(first), atop(last), 426 VM_FREELIST_DEFAULT); 427 428 /* 429 * Initialize message buffer (at end of core). 430 */ 431 mips_init_msgbuf(); 432 433 /* 434 * Initialize the virtual memory system. 435 */ 436 pmap_bootstrap(); 437 438 /* 439 * Init mapping for u page(s) for proc0. 440 */ 441 v = uvm_pageboot_alloc(USPACE); 442 lwp0.l_addr = proc0paddr = (struct user *)v; 443 lwp0.l_md.md_regs = (struct frame *)(v + USPACE) - 1; 444 proc0paddr->u_pcb.pcb_context[11] = 445 MIPS_INT_MASK | MIPS_SR_INT_IE; /* SR */ 446 447 /* 448 * Initialize debuggers, and break into them, if appropriate. 449 */ 450 #if NKSYMS || defined(DDB) || defined(LKM) 451 ksyms_init(0, 0, 0); 452 #endif 453 #ifdef DDB 454 if (boothowto & RB_KDB) 455 Debugger(); 456 #endif 457 458 copy_args(argc, argv); 459 } 460 461 void 462 consinit(void) 463 { 464 465 /* 466 * Everything related to console initialization is done 467 * in mach_init(). 468 */ 469 } 470 471 void 472 cpu_startup(void) 473 { 474 struct adm5120_config *admc = &adm5120_configuration; 475 char pbuf[9]; 476 vaddr_t minaddr, maxaddr; 477 #ifdef DEBUG 478 extern int pmapdebug; /* XXX */ 479 int opmapdebug = pmapdebug; 480 481 pmapdebug = 0; /* Shut up pmap debug during bootstrap */ 482 #endif 483 484 if ((admc->properties = prop_dictionary_create()) == NULL) 485 printf("%s: prop_dictionary_create\n", __func__); 486 parse_args(admc->properties, admc->argc, admc->argv, NULL); 487 488 /* 489 * Good {morning,afternoon,evening,night}. 490 */ 491 printf("%s%s", copyright, version); 492 printf("%s\n", cpu_model); 493 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 494 printf("total memory = %s\n", pbuf); 495 496 minaddr = 0; 497 498 /* 499 * Allocate a submap for physio 500 */ 501 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 502 VM_PHYS_SIZE, 0, FALSE, NULL); 503 504 /* 505 * No need to allocate an mbuf cluster submap. Mbuf clusters 506 * are allocated via the pool allocator, and we use KSEG to 507 * map those pages. 508 */ 509 510 #ifdef DEBUG 511 pmapdebug = opmapdebug; 512 #endif 513 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 514 printf("avail memory = %s\n", pbuf); 515 } 516 517 void 518 cpu_reboot(int howto, char *bootstr) 519 { 520 static int waittime = -1; 521 522 /* Take a snapshot before clobbering any registers. */ 523 if (curproc) 524 savectx((struct user *)curpcb); 525 526 /* If "always halt" was specified as a boot flag, obey. */ 527 if (boothowto & RB_HALT) 528 howto |= RB_HALT; 529 530 boothowto = howto; 531 532 /* If system is cold, just halt. */ 533 if (cold) { 534 boothowto |= RB_HALT; 535 goto haltsys; 536 } 537 538 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 539 waittime = 0; 540 541 /* 542 * Synchronize the disks.... 543 */ 544 vfs_shutdown(); 545 546 /* 547 * If we've been adjusting the clock, the todr 548 * will be out of synch; adjust it now. 549 */ 550 resettodr(); 551 } 552 553 /* Disable interrupts. */ 554 splhigh(); 555 556 if (boothowto & RB_DUMP) 557 dumpsys(); 558 559 haltsys: 560 /* Run any shutdown hooks. */ 561 doshutdownhooks(); 562 563 pmf_system_shutdown(boothowto); 564 565 /* 566 * Routerboard BIOS may autoboot, so "pseudo-halt". 567 */ 568 if (boothowto & RB_HALT) { 569 printf("\n"); 570 printf("The operating system has halted.\n"); 571 printf("Please press any key to reboot.\n\n"); 572 cnpollc(1); /* For proper keyboard command handling */ 573 cngetc(); 574 cnpollc(0); 575 } 576 577 printf("reseting board...\n\n"); 578 mips_icache_sync_all(); 579 mips_dcache_wbinv_all(); 580 SW_WRITE(SW_SFTRES_REG, 0); /* reset */ 581 for (;;) 582 /* spin forever */ ; /* XXX */ 583 /*NOTREACHED*/ 584 } 585
Indexes created Tue Sep 30 17:09:57 GMT 2025