machdep.c revision 1.53
1 /* $NetBSD: machdep.c,v 1.53 2011/06/20 17:44:33 matt 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 1.53 2011/06/20 17:44:33 matt Exp $"); 71 72 #include "opt_compat_netbsd.h" 73 #include "opt_ddb.h" 74 #include "opt_ipkdb.h" 75 76 #include <sys/param.h> 77 #include <sys/boot_flag.h> 78 #include <sys/buf.h> 79 #include <sys/bus.h> 80 #include <sys/cpu.h> 81 #include <sys/device.h> 82 #include <sys/exec.h> 83 #include <sys/kernel.h> 84 #include <sys/ksyms.h> 85 #include <sys/malloc.h> 86 #include <sys/mbuf.h> 87 #include <sys/module.h> 88 #include <sys/mount.h> 89 #include <sys/msgbuf.h> 90 #include <sys/proc.h> 91 #include <sys/reboot.h> 92 #include <sys/syscallargs.h> 93 #include <sys/syslog.h> 94 #include <sys/systm.h> 95 96 #include <uvm/uvm_extern.h> 97 98 #include <prop/proplib.h> 99 100 #include <machine/powerpc.h> 101 #include <machine/walnut.h> 102 103 #include <powerpc/trap.h> 104 #include <powerpc/pcb.h> 105 106 #include <powerpc/spr.h> 107 #include <powerpc/ibm4xx/spr.h> 108 #include <powerpc/ibm4xx/cpu.h> 109 #include <powerpc/ibm4xx/dcr4xx.h> 110 111 #include <powerpc/pic/picvar.h> 112 113 #include <dev/cons.h> 114 #include <dev/pci/pcivar.h> 115 #include <dev/pci/pciconf.h> 116 117 #include "ksyms.h" 118 119 #if defined(DDB) 120 #include <powerpc/db_machdep.h> 121 #include <ddb/db_extern.h> 122 #endif 123 124 125 #define TLB_PG_SIZE (16*1024*1024) 126 127 /* 128 * Global variables used here and there 129 */ 130 struct vm_map *phys_map = NULL; 131 132 /* 133 * This should probably be in autoconf! XXX 134 */ 135 char cpu_model[80]; 136 char machine[] = MACHINE; /* from <machine/param.h> */ 137 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 138 139 char bootpath[256]; 140 paddr_t msgbuf_paddr; 141 vaddr_t msgbuf_vaddr; 142 143 void initppc(vaddr_t, vaddr_t, char *, void *); 144 145 static void dumpsys(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(vaddr_t startkernel, vaddr_t endkernel, char *args, void *info_block) 155 { 156 /* Disable all external interrupts */ 157 mtdcr(DCR_UIC0_BASE + DCR_UIC_ER, 0); 158 159 /* Initialize cache info for memcpy, etc. */ 160 cpu_probe_cache(); 161 162 /* Save info block */ 163 memcpy(&board_data, info_block, sizeof(board_data)); 164 165 memset(physmemr, 0, sizeof physmemr); 166 memset(availmemr, 0, sizeof availmemr); 167 physmemr[0].start = 0; 168 physmemr[0].size = board_data.mem_size & ~PGOFSET; 169 /* Lower memory reserved by eval board BIOS */ 170 availmemr[0].start = startkernel; 171 availmemr[0].size = board_data.mem_size - availmemr[0].start; 172 173 /* Linear map kernel memory */ 174 for (vaddr_t va = 0; va < endkernel; va += TLB_PG_SIZE) { 175 ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX); 176 } 177 178 /* Map console after physmem (see pmap_tlbmiss()) */ 179 ppc4xx_tlb_reserve(0xef000000, roundup(physmemr[0].size, TLB_PG_SIZE), 180 TLB_PG_SIZE, TLB_I | TLB_G); 181 182 mtspr(SPR_TCR, 0); /* disable all timers */ 183 184 ibm4xx_init(startkernel, endkernel, pic_ext_intr); 185 186 #ifdef DEBUG 187 printf("Board config data:\n"); 188 printf(" usr_config_ver = %s\n", board_data.usr_config_ver); 189 printf(" rom_sw_ver = %s\n", board_data.rom_sw_ver); 190 printf(" mem_size = %u\n", board_data.mem_size); 191 printf(" mac_address_local = %02x:%02x:%02x:%02x:%02x:%02x\n", 192 board_data.mac_address_local[0], board_data.mac_address_local[1], 193 board_data.mac_address_local[2], board_data.mac_address_local[3], 194 board_data.mac_address_local[4], board_data.mac_address_local[5]); 195 printf(" mac_address_pci = %02x:%02x:%02x:%02x:%02x:%02x\n", 196 board_data.mac_address_pci[0], board_data.mac_address_pci[1], 197 board_data.mac_address_pci[2], board_data.mac_address_pci[3], 198 board_data.mac_address_pci[4], board_data.mac_address_pci[5]); 199 printf(" processor_speed = %u\n", board_data.processor_speed); 200 printf(" plb_speed = %u\n", board_data.plb_speed); 201 printf(" pci_speed = %u\n", board_data.pci_speed); 202 #endif 203 204 #ifdef DDB 205 if (boothowto & RB_KDB) 206 Debugger(); 207 #endif 208 #ifdef IPKDB 209 /* 210 * Now trap to IPKDB 211 */ 212 ipkdb_init(); 213 if (boothowto & RB_KDB) 214 ipkdb_connect(0); 215 #endif 216 217 /* 218 * Look for the ibm4xx modules in the right place. 219 */ 220 module_machine = module_machine_ibm4xx; 221 } 222 223 /* 224 * Machine dependent startup code. 225 */ 226 227 char msgbuf[MSGBUFSIZE]; 228 229 void 230 cpu_startup(void) 231 { 232 vaddr_t minaddr, maxaddr; 233 prop_number_t pn; 234 prop_data_t pd; 235 char pbuf[9]; 236 237 /* 238 * Initialize error message buffer (at end of core). 239 */ 240 #if 0 /* For some reason this fails... --Artem 241 * Besides, do we really have to put it at the end of core? 242 * Let's use static buffer for now 243 */ 244 if (!(msgbuf_vaddr = uvm_km_alloc(kernel_map, round_page(MSGBUFSIZE), 0, 245 UVM_KMF_VAONLY))) 246 panic("startup: no room for message buffer"); 247 for (i = 0; i < btoc(MSGBUFSIZE); i++) 248 pmap_kenter_pa(msgbuf_vaddr + i * PAGE_SIZE, 249 msgbuf_paddr + i * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, 0); 250 initmsgbuf((void *)msgbuf_vaddr, round_page(MSGBUFSIZE)); 251 #else 252 initmsgbuf((void *)msgbuf, round_page(MSGBUFSIZE)); 253 #endif 254 255 printf("%s%s", copyright, version); 256 printf("Walnut PowerPC 405GP Evaluation Board\n"); 257 258 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 259 printf("total memory = %s\n", pbuf); 260 261 minaddr = 0; 262 /* 263 * Allocate a submap for physio 264 */ 265 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 266 VM_PHYS_SIZE, 0, false, NULL); 267 268 /* 269 * No need to allocate an mbuf cluster submap. Mbuf clusters 270 * are allocated via the pool allocator, and we use direct-mapped 271 * pool pages. 272 */ 273 274 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 275 printf("avail memory = %s\n", pbuf); 276 277 /* 278 * Set up the board properties dictionary. 279 */ 280 board_properties = prop_dictionary_create(); 281 KASSERT(board_properties != NULL); 282 283 pn = prop_number_create_integer(board_data.mem_size); 284 KASSERT(pn != NULL); 285 if (prop_dictionary_set(board_properties, "mem-size", pn) == false) 286 panic("setting mem-size"); 287 prop_object_release(pn); 288 289 pd = prop_data_create_data_nocopy(board_data.mac_address_local, 290 sizeof(board_data.mac_address_local)); 291 KASSERT(pd != NULL); 292 if (prop_dictionary_set(board_properties, "emac0-mac-addr", 293 pd) == false) 294 panic("setting emac0-mac-addr"); 295 prop_object_release(pd); 296 297 pd = prop_data_create_data_nocopy(board_data.mac_address_pci, 298 sizeof(board_data.mac_address_pci)); 299 KASSERT(pd != NULL); 300 if (prop_dictionary_set(board_properties, "sip0-mac-addr", 301 pd) == false) 302 panic("setting sip0-mac-addr"); 303 prop_object_release(pd); 304 305 pn = prop_number_create_integer(board_data.processor_speed); 306 KASSERT(pn != NULL); 307 if (prop_dictionary_set(board_properties, "processor-frequency", 308 pn) == false) 309 panic("setting processor-frequency"); 310 prop_object_release(pn); 311 312 /* 313 * Now that we have VM, malloc()s are OK in bus_space. 314 */ 315 bus_space_mallocok(); 316 fake_mapiodev = 0; 317 } 318 319 320 static void 321 dumpsys(void) 322 { 323 324 printf("dumpsys: TBD\n"); 325 } 326 327 /* 328 * Halt or reboot the machine after syncing/dumping according to howto. 329 */ 330 void 331 cpu_reboot(int howto, char *what) 332 { 333 static int syncing; 334 static char str[256]; 335 char *ap = str, *ap1 = ap; 336 337 boothowto = howto; 338 if (!cold && !(howto & RB_NOSYNC) && !syncing) { 339 syncing = 1; 340 vfs_shutdown(); /* sync */ 341 resettodr(); /* set wall clock */ 342 } 343 344 splhigh(); 345 346 if (!cold && (howto & RB_DUMP)) 347 dumpsys(); 348 349 doshutdownhooks(); 350 351 pmf_system_shutdown(boothowto); 352 353 if ((howto & RB_POWERDOWN) == RB_POWERDOWN) { 354 /* Power off here if we know how...*/ 355 } 356 357 if (howto & RB_HALT) { 358 printf("halted\n\n"); 359 360 goto reboot; /* XXX for now... */ 361 362 #ifdef DDB 363 printf("dropping to debugger\n"); 364 while(1) 365 Debugger(); 366 #endif 367 } 368 369 printf("rebooting\n\n"); 370 if (what && *what) { 371 if (strlen(what) > sizeof str - 5) 372 printf("boot string too large, ignored\n"); 373 else { 374 strcpy(str, what); 375 ap1 = ap = str + strlen(str); 376 *ap++ = ' '; 377 } 378 } 379 *ap++ = '-'; 380 if (howto & RB_SINGLE) 381 *ap++ = 's'; 382 if (howto & RB_KDB) 383 *ap++ = 'd'; 384 *ap++ = 0; 385 if (ap[-2] == '-') 386 *ap1 = 0; 387 388 /* flush cache for msgbuf */ 389 __syncicache((void *)msgbuf_paddr, round_page(MSGBUFSIZE)); 390 391 reboot: 392 ppc4xx_reset(); 393 394 printf("ppc4xx_reset() failed!\n"); 395 #ifdef DDB 396 while(1) 397 Debugger(); 398 #else 399 while (1) 400 /* nothing */; 401 #endif 402 } 403 404 void 405 mem_regions(struct mem_region **mem, struct mem_region **avail) 406 { 407 408 *mem = physmemr; 409 *avail = availmemr; 410 } 411 412 413 int 414 pci_bus_maxdevs(pci_chipset_tag_t pc, int busno) 415 { 416 417 /* 418 * Bus number is irrelevant. Configuration Mechanism 1 is in 419 * use, can have devices 0-32 (i.e. the `normal' range). 420 */ 421 return 5; 422 } 423 424 int 425 pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) 426 { 427 int pin = pa->pa_intrpin; 428 int dev = pa->pa_device; 429 430 if (pin == 0) 431 /* No IRQ used. */ 432 goto bad; 433 434 if (pin > 4) { 435 printf("pci_intr_map: bad interrupt pin %d\n", pin); 436 goto bad; 437 } 438 439 /* 440 * We need to map the interrupt pin to the interrupt bit in the UIC 441 * associated with it. This is highly machine-dependent. 442 */ 443 switch(dev) { 444 case 1: 445 case 2: 446 case 3: 447 case 4: 448 *ihp = 27 + dev; 449 break; 450 default: 451 printf("Hmm.. PCI device %d should not exist on this board\n", 452 dev); 453 goto bad; 454 } 455 return 0; 456 457 bad: 458 *ihp = -1; 459 return 1; 460 } 461 462 void 463 pci_conf_interrupt(pci_chipset_tag_t pc, int bus, int dev, int pin, 464 int swiz, int *iline) 465 { 466 467 if (bus == 0) 468 switch(dev) { 469 case 1: 470 case 2: 471 case 3: 472 case 4: 473 *iline = 31 - dev; 474 } 475 else 476 *iline = 20 + ((swiz + dev + 1) & 3); 477 } 478
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