machdep.c revision 1.5.2.1
1 /* $NetBSD: machdep.c,v 1.5.2.1 2008/07/03 18:37:53 simonb 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 1.5.2.1 2008/07/03 18:37:53 simonb 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 struct user *proc0paddr; 163 164 /* Our exported CPU info; we can have only one. */ 165 struct cpu_info cpu_info_store; 166 167 /* Maps for VM objects. */ 168 struct vm_map *mb_map = NULL; 169 struct vm_map *phys_map = NULL; 170 171 int physmem; /* # pages of physical memory */ 172 int maxmem; /* max memory per process */ 173 174 int mem_cluster_cnt; 175 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; 176 177 struct adm5120_config adm5120_configuration; 178 179 void adm5120_setcpufreq(void); 180 181 void 182 adm5120_setcpufreq(void) 183 { 184 uint32_t v, freq; 185 186 v = SW_READ(SW_CODE_REG); 187 switch (v & CLKS_MASK) { 188 case CLKS_175MHZ: 189 freq = 175 * 1000 * 1000; 190 break; 191 case CLKS_200MHZ: 192 freq = 200 * 1000 * 1000; 193 break; 194 default: 195 panic("adm5120: cannot determine CPU clock speed"); 196 } 197 198 curcpu()->ci_cpu_freq = freq; 199 curcpu()->ci_cycles_per_hz = (freq + hz / 2) / hz / 2; 200 curcpu()->ci_divisor_delay = ((freq + 500000) / 1000000) / 2; 201 } 202 203 void mach_init(int, char **, void *, void *); /* XXX */ 204 205 static void 206 copy_args(int argc, char **argv) 207 { 208 struct adm5120_config *admc = &adm5120_configuration; 209 int i; 210 char *buf; 211 size_t buflen, rc; 212 213 buf = admc->args; 214 buflen = sizeof(admc->args); 215 216 if (argc >= __arraycount(admc->argv)) 217 panic("%s: too many boot args\n", __func__); 218 219 for (i = 0; buflen > 0 && i < argc && argv[i] != NULL; i++) { 220 admc->argv[i] = buf; 221 if ((rc = strlcpy(buf, argv[i], buflen)) >= buflen) 222 panic("%s: boot args too long\n", __func__); 223 224 buf += rc; 225 buflen -= rc; 226 *buf++ = '\0'; 227 buflen--; 228 } 229 if (i < argc) 230 panic("%s: boot args too long\n", __func__); 231 232 admc->argc = argc; 233 } 234 235 static void 236 parse_args(prop_dictionary_t properties, int argc, char **argv, 237 uint32_t *memsizep) 238 { 239 char buf[32]; 240 char *key, *val, *valend; 241 unsigned long tmp; 242 int i; 243 uint8_t enaddr[ETHER_ADDR_LEN]; 244 245 if (memsizep != NULL) 246 *memsizep = MEMSIZE; 247 248 for (i = 0; i < argc && argv[i] != NULL; i++) { 249 if (strlcpy(buf, argv[i], sizeof(buf)) >= sizeof(buf)) 250 goto err; 251 val = buf; 252 key = strsep(&val, "="); 253 if (val == NULL) 254 goto err; 255 if (strcmp(key, "mem") == 0) { 256 tmp = strtoul(val, &valend, 10); 257 if (val == valend || *valend != 'M') 258 goto err; 259 if (memsizep != NULL) 260 *memsizep = tmp * 1024 * 1024; 261 } else if (strcmp(key, "HZ") == 0) 262 ; 263 else if (strcmp(key, "gpio") == 0) { 264 prop_number_t pn; 265 266 tmp = strtoul(val, &valend, 10); 267 if (val == valend || *valend != '\0') 268 goto err; 269 if (properties == NULL) 270 continue; 271 pn = prop_number_create_unsigned_integer(tmp); 272 if (pn == NULL) { 273 printf( 274 "%s: prop_number_create_unsigned_integer\n", 275 __func__); 276 continue; 277 } 278 if (!prop_dictionary_set(properties, "initial-gpio", 279 pn)) { 280 printf("%s: prop_dictionary_set(gpio)\n", 281 __func__); 282 } 283 prop_object_release(pn); 284 } else if (strcmp(key, "kmac") == 0) { 285 prop_data_t pd; 286 287 ether_nonstatic_aton(enaddr, val); 288 if (properties == NULL) 289 continue; 290 pd = prop_data_create_data(enaddr, sizeof(enaddr)); 291 if (pd == NULL) { 292 printf("%s: prop_data_create_data\n", __func__); 293 continue; 294 } 295 if (!prop_dictionary_set(properties, "mac-addr", pd)) { 296 printf("%s: prop_dictionary_set(mac)\n", 297 __func__); 298 } 299 prop_object_release(pd); 300 } else if (strcmp(key, "board") == 0) 301 printf("Routerboard %s\n", val); 302 else if (strcmp(key, "boot") == 0) 303 ; 304 continue; 305 err: 306 printf("bad argv[%d] (%s)\n", i, argv[i]); 307 } 308 } 309 310 void 311 mach_init(int argc, char **argv, void *a2, void *a3) 312 { 313 struct adm5120_config *admc = &adm5120_configuration; 314 uint32_t memsize; 315 vaddr_t kernend; 316 u_long first, last; 317 vaddr_t v; 318 319 extern char edata[], end[]; /* XXX */ 320 321 /* clear the BSS segment */ 322 kernend = mips_round_page(end); 323 memset(edata, 0, kernend - (vaddr_t)edata); 324 325 /* set CPU model info for sysctl_hw */ 326 strcpy(cpu_model, "Infineon ADM5120"); 327 328 /* 329 * Set up the exception vectors and CPU-specific function 330 * vectors early on. We need the wbflush() vector set up 331 * before comcnattach() is called (or at least before the 332 * first printf() after that is called). 333 * Sets up mips_cpu_flags that may be queried by other 334 * functions called during startup. 335 * Also clears the I+D caches. 336 */ 337 mips_vector_init(); 338 339 /* 340 * Set the VM page size. 341 */ 342 uvm_setpagesize(); 343 344 adm5120_setcpufreq(); 345 346 /* 347 * Initialize bus space tags. 348 */ 349 obio_bus_mem_init(&admc->obio_space, admc); 350 extio_bus_mem_init(&admc->extio_space, admc); 351 #if NPCI > 0 352 pciio_bus_mem_init(&admc->pciio_space, admc); 353 pcimem_bus_mem_init(&admc->pcimem_space, admc); 354 #endif 355 356 /* 357 * Initialize bus DMA tag. 358 */ 359 obio_dma_init(&admc->obio_dmat); 360 361 /* 362 * Attach serial console. 363 */ 364 uart_cnattach(); 365 366 /* 367 * Look at arguments passed to us and compute boothowto. 368 */ 369 boothowto = RB_AUTOBOOT; 370 #ifdef KADB 371 boothowto |= RB_KDB; 372 #endif 373 374 parse_args(NULL, argc, argv, &memsize); 375 376 /* 377 * Determine the memory size. 378 * 379 * Note: Reserve the first page! That's where the trap 380 * vectors are located. 381 */ 382 383 #if 0 384 if (GET_MEMSIZE(memsize) == 0) { 385 uint32_t val; 386 387 /* This does not seem to work... --dyoung */ 388 val = SW_READ(SW_MEMCONT_REG); 389 printf("SW_MEMCONT_REG: 0x%08" PRIx32 "\n", val); 390 switch (val & SDRAM_SIZE_MASK) { 391 case SDRAM_SIZE_4MBYTES: 392 memsize = 4 * 1024 * 1024; 393 break; 394 case SDRAM_SIZE_8MBYTES: 395 memsize = 8 * 1024 * 1024; 396 break; 397 case SDRAM_SIZE_16MBYTES: 398 memsize = 16 * 1024 * 1024; 399 break; 400 case SDRAM_SIZE_64MBYTES: 401 memsize = 64 * 1024 * 1024; 402 break; 403 case SDRAM_SIZE_128MBYTES: 404 memsize = 128 * 1024 * 1024; 405 break; 406 default: 407 panic("adm5120: cannot determine memory size"); 408 } 409 } 410 #endif 411 412 physmem = btoc(memsize); 413 414 mem_clusters[mem_cluster_cnt].start = PAGE_SIZE; 415 mem_clusters[mem_cluster_cnt].size = 416 memsize - mem_clusters[mem_cluster_cnt].start; 417 mem_cluster_cnt++; 418 419 /* 420 * Load the rest of the available pages into the VM system. 421 */ 422 first = round_page(MIPS_KSEG0_TO_PHYS(kernend)); 423 last = mem_clusters[0].start + mem_clusters[0].size; 424 uvm_page_physload(atop(first), atop(last), atop(first), atop(last), 425 VM_FREELIST_DEFAULT); 426 427 /* 428 * Initialize message buffer (at end of core). 429 */ 430 mips_init_msgbuf(); 431 432 /* 433 * Initialize the virtual memory system. 434 */ 435 pmap_bootstrap(); 436 437 /* 438 * Init mapping for u page(s) for proc0. 439 */ 440 v = uvm_pageboot_alloc(USPACE); 441 lwp0.l_addr = proc0paddr = (struct user *)v; 442 lwp0.l_md.md_regs = (struct frame *)(v + USPACE) - 1; 443 proc0paddr->u_pcb.pcb_context[11] = 444 MIPS_INT_MASK | MIPS_SR_INT_IE; /* SR */ 445 446 /* 447 * Initialize debuggers, and break into them, if appropriate. 448 */ 449 #if NKSYMS || defined(DDB) || defined(LKM) 450 ksyms_init(0, 0, 0); 451 #endif 452 #ifdef DDB 453 if (boothowto & RB_KDB) 454 Debugger(); 455 #endif 456 457 copy_args(argc, argv); 458 } 459 460 void 461 consinit(void) 462 { 463 464 /* 465 * Everything related to console initialization is done 466 * in mach_init(). 467 */ 468 } 469 470 void 471 cpu_startup(void) 472 { 473 struct adm5120_config *admc = &adm5120_configuration; 474 char pbuf[9]; 475 vaddr_t minaddr, maxaddr; 476 #ifdef DEBUG 477 extern int pmapdebug; /* XXX */ 478 int opmapdebug = pmapdebug; 479 480 pmapdebug = 0; /* Shut up pmap debug during bootstrap */ 481 #endif 482 483 if ((admc->properties = prop_dictionary_create()) == NULL) 484 printf("%s: prop_dictionary_create\n", __func__); 485 parse_args(admc->properties, admc->argc, admc->argv, NULL); 486 487 /* 488 * Good {morning,afternoon,evening,night}. 489 */ 490 printf("%s%s", copyright, version); 491 printf("%s\n", cpu_model); 492 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 493 printf("total memory = %s\n", pbuf); 494 495 minaddr = 0; 496 497 /* 498 * Allocate a submap for physio 499 */ 500 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 501 VM_PHYS_SIZE, 0, FALSE, NULL); 502 503 /* 504 * No need to allocate an mbuf cluster submap. Mbuf clusters 505 * are allocated via the pool allocator, and we use KSEG to 506 * map those pages. 507 */ 508 509 #ifdef DEBUG 510 pmapdebug = opmapdebug; 511 #endif 512 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 513 printf("avail memory = %s\n", pbuf); 514 } 515 516 void 517 cpu_reboot(int howto, char *bootstr) 518 { 519 static int waittime = -1; 520 521 /* Take a snapshot before clobbering any registers. */ 522 if (curproc) 523 savectx((struct user *)curpcb); 524 525 /* If "always halt" was specified as a boot flag, obey. */ 526 if (boothowto & RB_HALT) 527 howto |= RB_HALT; 528 529 boothowto = howto; 530 531 /* If system is cold, just halt. */ 532 if (cold) { 533 boothowto |= RB_HALT; 534 goto haltsys; 535 } 536 537 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 538 waittime = 0; 539 540 /* 541 * Synchronize the disks.... 542 */ 543 vfs_shutdown(); 544 545 /* 546 * If we've been adjusting the clock, the todr 547 * will be out of synch; adjust it now. 548 */ 549 resettodr(); 550 } 551 552 /* Disable interrupts. */ 553 splhigh(); 554 555 if (boothowto & RB_DUMP) 556 dumpsys(); 557 558 haltsys: 559 /* Run any shutdown hooks. */ 560 doshutdownhooks(); 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
Indexes created Tue Oct 21 16:10:11 GMT 2025