machdep.c revision 1.43
1 /* $NetBSD: machdep.c,v 1.43 2009/11/27 03:23:08 rmind Exp $ */ 2 3 /* 4 * Copyright 2001, 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 40 * Copyright (C) 1995, 1996 TooLs GmbH. 41 * All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by TooLs GmbH. 54 * 4. The name of TooLs GmbH may not be used to endorse or promote products 55 * derived from this software without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 61 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 62 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 63 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 64 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 65 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 66 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 */ 68 69 #include <sys/cdefs.h> 70 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.43 2009/11/27 03:23:08 rmind Exp $"); 71 72 #include "opt_compat_netbsd.h" 73 #include "opt_ddb.h" 74 #include "opt_ipkdb.h" 75 #include "opt_modular.h" 76 77 #include <sys/param.h> 78 #include <sys/buf.h> 79 #include <sys/exec.h> 80 #include <sys/malloc.h> 81 #include <sys/mbuf.h> 82 #include <sys/mount.h> 83 #include <sys/msgbuf.h> 84 #include <sys/proc.h> 85 #include <sys/reboot.h> 86 #include <sys/syscallargs.h> 87 #include <sys/syslog.h> 88 #include <sys/systm.h> 89 #include <sys/kernel.h> 90 #include <sys/boot_flag.h> 91 #include <sys/ksyms.h> 92 #include <sys/device.h> 93 94 #include <uvm/uvm_extern.h> 95 96 #include <net/netisr.h> 97 98 #include <prop/proplib.h> 99 100 #include <machine/bus.h> 101 #include <machine/powerpc.h> 102 #include <machine/trap.h> 103 #include <machine/walnut.h> 104 105 #include <powerpc/spr.h> 106 #include <powerpc/ibm4xx/dcr405gp.h> 107 108 #include <dev/cons.h> 109 110 #include "ksyms.h" 111 112 #if defined(DDB) 113 #include <machine/db_machdep.h> 114 #include <ddb/db_extern.h> 115 #endif 116 117 118 #define TLB_PG_SIZE (16*1024*1024) 119 120 /* 121 * Global variables used here and there 122 */ 123 struct vm_map *mb_map = NULL; 124 struct vm_map *phys_map = NULL; 125 126 /* 127 * This should probably be in autoconf! XXX 128 */ 129 char cpu_model[80]; 130 char machine[] = MACHINE; /* from <machine/param.h> */ 131 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 132 133 char bootpath[256]; 134 paddr_t msgbuf_paddr; 135 vaddr_t msgbuf_vaddr; 136 137 #if NKSYMS || defined(DDB) || defined(MODULAR) 138 void *startsym, *endsym; 139 #endif 140 141 int lcsplx(int); 142 void initppc(u_int, u_int, char *, void *); 143 144 static void dumpsys(void); 145 static void install_extint(void (*)(void)); 146 147 #define MEMREGIONS 8 148 struct mem_region physmemr[MEMREGIONS]; /* Hard code memory */ 149 struct mem_region availmemr[MEMREGIONS]; /* Who's supposed to set these up? */ 150 151 struct board_cfg_data board_data; 152 153 void 154 initppc(u_int startkernel, u_int endkernel, char *args, void *info_block) 155 { 156 extern int defaulttrap, defaultsize; 157 extern int sctrap, scsize; 158 extern int alitrap, alisize; 159 extern int dsitrap, dsisize; 160 extern int isitrap, isisize; 161 extern int mchktrap, mchksize; 162 extern int tlbimiss4xx, tlbim4size; 163 extern int tlbdmiss4xx, tlbdm4size; 164 extern int pitfitwdog, pitfitwdogsize; 165 extern int debugtrap, debugsize; 166 extern int errata51handler, errata51size; 167 #ifdef DDB 168 extern int ddblow, ddbsize; 169 #endif 170 #ifdef IPKDB 171 extern int ipkdblow, ipkdbsize; 172 #endif 173 vaddr_t va; 174 int exc, dbcr0; 175 struct cpu_info * const ci = curcpu(); 176 177 /* Disable all external interrupts */ 178 mtdcr(DCR_UIC0_ER, 0); 179 180 /* Initialize cache info for memcpy, etc. */ 181 cpu_probe_cache(); 182 183 /* Save info block */ 184 memcpy(&board_data, info_block, sizeof(board_data)); 185 186 memset(physmemr, 0, sizeof physmemr); 187 memset(availmemr, 0, sizeof availmemr); 188 physmemr[0].start = 0; 189 physmemr[0].size = board_data.mem_size & ~PGOFSET; 190 /* Lower memory reserved by eval board BIOS */ 191 availmemr[0].start = startkernel; 192 availmemr[0].size = board_data.mem_size - availmemr[0].start; 193 194 /* Linear map kernel memory */ 195 for (va = 0; va < endkernel; va += TLB_PG_SIZE) 196 ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX); 197 198 /* Map console after physmem (see pmap_tlbmiss()) */ 199 ppc4xx_tlb_reserve(0xef000000, roundup(physmemr[0].size, TLB_PG_SIZE), 200 TLB_PG_SIZE, TLB_I | TLB_G); 201 202 /* 203 * Initialize lwp0 and current pcb and pmap pointers. 204 */ 205 lwp0.l_cpu = ci; 206 207 curpcb = lwp_getpcb(&lwp0); 208 memset(curpcb, 0, sizeof(struct pcb)); 209 curpcb->pcb_pm = pmap_kernel(); 210 211 /* 212 * Set up trap vectors 213 */ 214 for (exc = EXC_RSVD; exc <= EXC_LAST; exc += 0x100) 215 switch (exc) { 216 default: 217 memcpy((void *)exc, &defaulttrap, (size_t)&defaultsize); 218 break; 219 case EXC_EXI: 220 /* 221 * This one is (potentially) installed during autoconf 222 */ 223 break; 224 case EXC_SC: 225 memcpy((void *)EXC_SC, &sctrap, (size_t)&scsize); 226 break; 227 case EXC_ALI: 228 memcpy((void *)EXC_ALI, &alitrap, (size_t)&alisize); 229 break; 230 case EXC_DSI: 231 memcpy((void *)EXC_DSI, &dsitrap, (size_t)&dsisize); 232 break; 233 case EXC_ISI: 234 memcpy((void *)EXC_ISI, &isitrap, (size_t)&isisize); 235 break; 236 case EXC_MCHK: 237 memcpy((void *)EXC_MCHK, &mchktrap, (size_t)&mchksize); 238 break; 239 case EXC_ITMISS: 240 memcpy((void *)EXC_ITMISS, &tlbimiss4xx, 241 (size_t)&tlbim4size); 242 break; 243 case EXC_DTMISS: 244 memcpy((void *)EXC_DTMISS, &tlbdmiss4xx, 245 (size_t)&tlbdm4size); 246 break; 247 /* 248 * EXC_PIT, EXC_FIT, EXC_WDOG handlers 249 * are spaced by 0x10 bytes only.. 250 */ 251 case EXC_PIT: 252 memcpy((void *)EXC_PIT, &pitfitwdog, 253 (size_t)&pitfitwdogsize); 254 break; 255 case EXC_DEBUG: 256 memcpy((void *)EXC_DEBUG, &debugtrap, 257 (size_t)&debugsize); 258 break; 259 case EXC_DTMISS|EXC_ALI: 260 /* PPC405GP Rev D errata item 51 */ 261 memcpy((void *)(EXC_DTMISS|EXC_ALI), &errata51handler, 262 (size_t)&errata51size); 263 break; 264 #if defined(DDB) || defined(IPKDB) 265 case EXC_PGM: 266 #if defined(DDB) 267 memcpy((void *)exc, &ddblow, (size_t)&ddbsize); 268 #elif defined(IPKDB) 269 memcpy((void *)exc, &ipkdblow, (size_t)&ipkdbsize); 270 #endif 271 #endif /* DDB | IPKDB */ 272 break; 273 } 274 275 __syncicache((void *)EXC_RST, EXC_LAST - EXC_RST + 0x100); 276 mtspr(SPR_EVPR, 0); /* Set Exception vector base */ 277 278 consinit(); 279 280 /* Handle trap instruction as PGM exception */ 281 __asm volatile("mfspr %0,%1":"=r"(dbcr0):"K"(SPR_DBCR0)); 282 __asm volatile("mtspr %0,%1"::"K"(SPR_DBCR0),"r"(dbcr0 & ~DBCR0_TDE)); 283 284 /* 285 * external interrupt handler install 286 */ 287 install_extint(ext_intr); 288 289 /* 290 * Now enable translation (and machine checks/recoverable interrupts). 291 */ 292 __asm volatile ("mfmsr %0; ori %0,%0,%1; mtmsr %0; isync" 293 : : "r"(0), "K"(PSL_IR|PSL_DR)); 294 /* XXXX PSL_ME - With ME set kernel gets stuck... */ 295 296 uvm_setpagesize(); 297 298 /* 299 * Initialize pmap module. 300 */ 301 pmap_bootstrap(startkernel, endkernel); 302 303 #ifdef DEBUG 304 printf("Board config data:\n"); 305 printf(" usr_config_ver = %s\n", board_data.usr_config_ver); 306 printf(" rom_sw_ver = %s\n", board_data.rom_sw_ver); 307 printf(" mem_size = %u\n", board_data.mem_size); 308 printf(" mac_address_local = %02x:%02x:%02x:%02x:%02x:%02x\n", 309 board_data.mac_address_local[0], board_data.mac_address_local[1], 310 board_data.mac_address_local[2], board_data.mac_address_local[3], 311 board_data.mac_address_local[4], board_data.mac_address_local[5]); 312 printf(" mac_address_pci = %02x:%02x:%02x:%02x:%02x:%02x\n", 313 board_data.mac_address_pci[0], board_data.mac_address_pci[1], 314 board_data.mac_address_pci[2], board_data.mac_address_pci[3], 315 board_data.mac_address_pci[4], board_data.mac_address_pci[5]); 316 printf(" processor_speed = %u\n", board_data.processor_speed); 317 printf(" plb_speed = %u\n", board_data.plb_speed); 318 printf(" pci_speed = %u\n", board_data.pci_speed); 319 #endif 320 321 #if NKSYMS || defined(DDB) || defined(MODULAR) 322 ksyms_addsyms_elf((int)((u_int)endsym - (u_int)startsym), startsym, endsym); 323 #endif 324 #ifdef DDB 325 if (boothowto & RB_KDB) 326 Debugger(); 327 #endif 328 #ifdef IPKDB 329 /* 330 * Now trap to IPKDB 331 */ 332 ipkdb_init(); 333 if (boothowto & RB_KDB) 334 ipkdb_connect(0); 335 #endif 336 } 337 338 static void 339 install_extint(void (*handler)(void)) 340 { 341 extern int extint, extsize; 342 extern u_long extint_call; 343 u_long offset = (u_long)handler - (u_long)&extint_call; 344 int msr; 345 346 #ifdef DIAGNOSTIC 347 if (offset > 0x1ffffff) 348 panic("install_extint: too far away"); 349 #endif 350 __asm volatile ("mfmsr %0; wrteei 0" : "=r"(msr)); 351 extint_call = (extint_call & 0xfc000003) | offset; 352 memcpy((void *)EXC_EXI, &extint, (size_t)&extsize); 353 __syncicache((void *)&extint_call, sizeof extint_call); 354 __syncicache((void *)EXC_EXI, (int)&extsize); 355 __asm volatile ("mtmsr %0" :: "r"(msr)); 356 } 357 358 /* 359 * Machine dependent startup code. 360 */ 361 362 char msgbuf[MSGBUFSIZE]; 363 364 void 365 cpu_startup(void) 366 { 367 vaddr_t minaddr, maxaddr; 368 prop_number_t pn; 369 prop_data_t pd; 370 char pbuf[9]; 371 372 /* 373 * Initialize error message buffer (at end of core). 374 */ 375 #if 0 /* For some reason this fails... --Artem 376 * Besides, do we really have to put it at the end of core? 377 * Let's use static buffer for now 378 */ 379 if (!(msgbuf_vaddr = uvm_km_alloc(kernel_map, round_page(MSGBUFSIZE), 0, 380 UVM_KMF_VAONLY))) 381 panic("startup: no room for message buffer"); 382 for (i = 0; i < btoc(MSGBUFSIZE); i++) 383 pmap_kenter_pa(msgbuf_vaddr + i * PAGE_SIZE, 384 msgbuf_paddr + i * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, 0); 385 initmsgbuf((void *)msgbuf_vaddr, round_page(MSGBUFSIZE)); 386 #else 387 initmsgbuf((void *)msgbuf, round_page(MSGBUFSIZE)); 388 #endif 389 390 printf("%s%s", copyright, version); 391 printf("Walnut PowerPC 405GP Evaluation Board\n"); 392 393 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 394 printf("total memory = %s\n", pbuf); 395 396 minaddr = 0; 397 /* 398 * Allocate a submap for physio 399 */ 400 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 401 VM_PHYS_SIZE, 0, false, NULL); 402 403 /* 404 * No need to allocate an mbuf cluster submap. Mbuf clusters 405 * are allocated via the pool allocator, and we use direct-mapped 406 * pool pages. 407 */ 408 409 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 410 printf("avail memory = %s\n", pbuf); 411 412 /* 413 * Set up the board properties dictionary. 414 */ 415 board_properties = prop_dictionary_create(); 416 KASSERT(board_properties != NULL); 417 418 pn = prop_number_create_integer(board_data.mem_size); 419 KASSERT(pn != NULL); 420 if (prop_dictionary_set(board_properties, "mem-size", pn) == false) 421 panic("setting mem-size"); 422 prop_object_release(pn); 423 424 pd = prop_data_create_data_nocopy(board_data.mac_address_local, 425 sizeof(board_data.mac_address_local)); 426 KASSERT(pd != NULL); 427 if (prop_dictionary_set(board_properties, "emac0-mac-addr", 428 pd) == false) 429 panic("setting emac0-mac-addr"); 430 prop_object_release(pd); 431 432 pd = prop_data_create_data_nocopy(board_data.mac_address_pci, 433 sizeof(board_data.mac_address_pci)); 434 KASSERT(pd != NULL); 435 if (prop_dictionary_set(board_properties, "sip0-mac-addr", 436 pd) == false) 437 panic("setting sip0-mac-addr"); 438 prop_object_release(pd); 439 440 pn = prop_number_create_integer(board_data.processor_speed); 441 KASSERT(pn != NULL); 442 if (prop_dictionary_set(board_properties, "processor-frequency", 443 pn) == false) 444 panic("setting processor-frequency"); 445 prop_object_release(pn); 446 447 /* 448 * Now that we have VM, malloc()s are OK in bus_space. 449 */ 450 bus_space_mallocok(); 451 fake_mapiodev = 0; 452 } 453 454 455 static void 456 dumpsys(void) 457 { 458 459 printf("dumpsys: TBD\n"); 460 } 461 462 /* 463 * Halt or reboot the machine after syncing/dumping according to howto. 464 */ 465 void 466 cpu_reboot(int howto, char *what) 467 { 468 static int syncing; 469 static char str[256]; 470 char *ap = str, *ap1 = ap; 471 472 boothowto = howto; 473 if (!cold && !(howto & RB_NOSYNC) && !syncing) { 474 syncing = 1; 475 vfs_shutdown(); /* sync */ 476 resettodr(); /* set wall clock */ 477 } 478 479 splhigh(); 480 481 if (!cold && (howto & RB_DUMP)) 482 dumpsys(); 483 484 doshutdownhooks(); 485 486 pmf_system_shutdown(boothowto); 487 488 if ((howto & RB_POWERDOWN) == RB_POWERDOWN) { 489 /* Power off here if we know how...*/ 490 } 491 492 if (howto & RB_HALT) { 493 printf("halted\n\n"); 494 495 goto reboot; /* XXX for now... */ 496 497 #ifdef DDB 498 printf("dropping to debugger\n"); 499 while(1) 500 Debugger(); 501 #endif 502 } 503 504 printf("rebooting\n\n"); 505 if (what && *what) { 506 if (strlen(what) > sizeof str - 5) 507 printf("boot string too large, ignored\n"); 508 else { 509 strcpy(str, what); 510 ap1 = ap = str + strlen(str); 511 *ap++ = ' '; 512 } 513 } 514 *ap++ = '-'; 515 if (howto & RB_SINGLE) 516 *ap++ = 's'; 517 if (howto & RB_KDB) 518 *ap++ = 'd'; 519 *ap++ = 0; 520 if (ap[-2] == '-') 521 *ap1 = 0; 522 523 /* flush cache for msgbuf */ 524 __syncicache((void *)msgbuf_paddr, round_page(MSGBUFSIZE)); 525 526 reboot: 527 ppc4xx_reset(); 528 529 printf("ppc4xx_reset() failed!\n"); 530 #ifdef DDB 531 while(1) 532 Debugger(); 533 #else 534 while (1) 535 /* nothing */; 536 #endif 537 } 538 539 int 540 lcsplx(int ipl) 541 { 542 543 return spllower(ipl); /* XXX */ 544 } 545 546 void 547 mem_regions(struct mem_region **mem, struct mem_region **avail) 548 { 549 550 *mem = physmemr; 551 *avail = availmemr; 552 } 553
Indexes created Fri Oct 03 02:09:57 GMT 2025