machdep.c revision 1.54
1 /* $NetBSD: machdep.c,v 1.54 2011/06/22 18:06:32 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 1.54 2011/06/22 18:06:32 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/ibm4xx/pci_machdep.h> 112 113 #include <powerpc/pic/picvar.h> 114 115 #include <dev/cons.h> 116 #include <dev/pci/pcivar.h> 117 #include <dev/pci/pciconf.h> 118 119 #include "ksyms.h" 120 121 #if defined(DDB) 122 #include <powerpc/db_machdep.h> 123 #include <ddb/db_extern.h> 124 #endif 125 126 127 #define TLB_PG_SIZE (16*1024*1024) 128 129 /* 130 * Global variables used here and there 131 */ 132 struct vm_map *phys_map = NULL; 133 134 /* 135 * This should probably be in autoconf! XXX 136 */ 137 char cpu_model[80]; 138 char machine[] = MACHINE; /* from <machine/param.h> */ 139 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 140 141 char bootpath[256]; 142 paddr_t msgbuf_paddr; 143 vaddr_t msgbuf_vaddr; 144 145 void initppc(vaddr_t, vaddr_t, char *, void *); 146 147 static void dumpsys(void); 148 149 #define MEMREGIONS 8 150 struct mem_region physmemr[MEMREGIONS]; /* Hard code memory */ 151 struct mem_region availmemr[MEMREGIONS]; /* Who's supposed to set these up? */ 152 153 struct board_cfg_data board_data; 154 155 void 156 initppc(vaddr_t startkernel, vaddr_t endkernel, char *args, void *info_block) 157 { 158 /* Disable all external interrupts */ 159 mtdcr(DCR_UIC0_BASE + DCR_UIC_ER, 0); 160 161 /* Initialize cache info for memcpy, etc. */ 162 cpu_probe_cache(); 163 164 /* Save info block */ 165 memcpy(&board_data, info_block, sizeof(board_data)); 166 167 memset(physmemr, 0, sizeof physmemr); 168 memset(availmemr, 0, sizeof availmemr); 169 physmemr[0].start = 0; 170 physmemr[0].size = board_data.mem_size & ~PGOFSET; 171 /* Lower memory reserved by eval board BIOS */ 172 availmemr[0].start = startkernel; 173 availmemr[0].size = board_data.mem_size - availmemr[0].start; 174 175 /* Linear map kernel memory */ 176 for (vaddr_t va = 0; va < endkernel; va += TLB_PG_SIZE) { 177 ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX); 178 } 179 180 /* Map console after physmem (see pmap_tlbmiss()) */ 181 ppc4xx_tlb_reserve(0xef000000, roundup(physmemr[0].size, TLB_PG_SIZE), 182 TLB_PG_SIZE, TLB_I | TLB_G); 183 184 mtspr(SPR_TCR, 0); /* disable all timers */ 185 186 ibm4xx_init(startkernel, endkernel, pic_ext_intr); 187 188 #ifdef DEBUG 189 printf("Board config data:\n"); 190 printf(" usr_config_ver = %s\n", board_data.usr_config_ver); 191 printf(" rom_sw_ver = %s\n", board_data.rom_sw_ver); 192 printf(" mem_size = %u\n", board_data.mem_size); 193 printf(" mac_address_local = %02x:%02x:%02x:%02x:%02x:%02x\n", 194 board_data.mac_address_local[0], board_data.mac_address_local[1], 195 board_data.mac_address_local[2], board_data.mac_address_local[3], 196 board_data.mac_address_local[4], board_data.mac_address_local[5]); 197 printf(" mac_address_pci = %02x:%02x:%02x:%02x:%02x:%02x\n", 198 board_data.mac_address_pci[0], board_data.mac_address_pci[1], 199 board_data.mac_address_pci[2], board_data.mac_address_pci[3], 200 board_data.mac_address_pci[4], board_data.mac_address_pci[5]); 201 printf(" processor_speed = %u\n", board_data.processor_speed); 202 printf(" plb_speed = %u\n", board_data.plb_speed); 203 printf(" pci_speed = %u\n", board_data.pci_speed); 204 #endif 205 206 #ifdef DDB 207 if (boothowto & RB_KDB) 208 Debugger(); 209 #endif 210 #ifdef IPKDB 211 /* 212 * Now trap to IPKDB 213 */ 214 ipkdb_init(); 215 if (boothowto & RB_KDB) 216 ipkdb_connect(0); 217 #endif 218 219 /* 220 * Look for the ibm4xx modules in the right place. 221 */ 222 module_machine = module_machine_ibm4xx; 223 } 224 225 /* 226 * Machine dependent startup code. 227 */ 228 229 char msgbuf[MSGBUFSIZE]; 230 231 void 232 cpu_startup(void) 233 { 234 vaddr_t minaddr, maxaddr; 235 prop_number_t pn; 236 prop_data_t pd; 237 char pbuf[9]; 238 239 /* 240 * Initialize error message buffer (at end of core). 241 */ 242 #if 0 /* For some reason this fails... --Artem 243 * Besides, do we really have to put it at the end of core? 244 * Let's use static buffer for now 245 */ 246 if (!(msgbuf_vaddr = uvm_km_alloc(kernel_map, round_page(MSGBUFSIZE), 0, 247 UVM_KMF_VAONLY))) 248 panic("startup: no room for message buffer"); 249 for (i = 0; i < btoc(MSGBUFSIZE); i++) 250 pmap_kenter_pa(msgbuf_vaddr + i * PAGE_SIZE, 251 msgbuf_paddr + i * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, 0); 252 initmsgbuf((void *)msgbuf_vaddr, round_page(MSGBUFSIZE)); 253 #else 254 initmsgbuf((void *)msgbuf, round_page(MSGBUFSIZE)); 255 #endif 256 257 printf("%s%s", copyright, version); 258 printf("Walnut PowerPC 405GP Evaluation Board\n"); 259 260 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 261 printf("total memory = %s\n", pbuf); 262 263 minaddr = 0; 264 /* 265 * Allocate a submap for physio 266 */ 267 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 268 VM_PHYS_SIZE, 0, false, NULL); 269 270 /* 271 * No need to allocate an mbuf cluster submap. Mbuf clusters 272 * are allocated via the pool allocator, and we use direct-mapped 273 * pool pages. 274 */ 275 276 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 277 printf("avail memory = %s\n", pbuf); 278 279 /* 280 * Set up the board properties dictionary. 281 */ 282 board_properties = prop_dictionary_create(); 283 KASSERT(board_properties != NULL); 284 285 pn = prop_number_create_integer(board_data.mem_size); 286 KASSERT(pn != NULL); 287 if (prop_dictionary_set(board_properties, "mem-size", pn) == false) 288 panic("setting mem-size"); 289 prop_object_release(pn); 290 291 pd = prop_data_create_data_nocopy(board_data.mac_address_local, 292 sizeof(board_data.mac_address_local)); 293 KASSERT(pd != NULL); 294 if (prop_dictionary_set(board_properties, "emac0-mac-addr", 295 pd) == false) 296 panic("setting emac0-mac-addr"); 297 prop_object_release(pd); 298 299 pd = prop_data_create_data_nocopy(board_data.mac_address_pci, 300 sizeof(board_data.mac_address_pci)); 301 KASSERT(pd != NULL); 302 if (prop_dictionary_set(board_properties, "sip0-mac-addr", 303 pd) == false) 304 panic("setting sip0-mac-addr"); 305 prop_object_release(pd); 306 307 pn = prop_number_create_integer(board_data.processor_speed); 308 KASSERT(pn != NULL); 309 if (prop_dictionary_set(board_properties, "processor-frequency", 310 pn) == false) 311 panic("setting processor-frequency"); 312 prop_object_release(pn); 313 314 /* 315 * Now that we have VM, malloc()s are OK in bus_space. 316 */ 317 bus_space_mallocok(); 318 fake_mapiodev = 0; 319 } 320 321 322 static void 323 dumpsys(void) 324 { 325 326 printf("dumpsys: TBD\n"); 327 } 328 329 /* 330 * Halt or reboot the machine after syncing/dumping according to howto. 331 */ 332 void 333 cpu_reboot(int howto, char *what) 334 { 335 static int syncing; 336 static char str[256]; 337 char *ap = str, *ap1 = ap; 338 339 boothowto = howto; 340 if (!cold && !(howto & RB_NOSYNC) && !syncing) { 341 syncing = 1; 342 vfs_shutdown(); /* sync */ 343 resettodr(); /* set wall clock */ 344 } 345 346 splhigh(); 347 348 if (!cold && (howto & RB_DUMP)) 349 dumpsys(); 350 351 doshutdownhooks(); 352 353 pmf_system_shutdown(boothowto); 354 355 if ((howto & RB_POWERDOWN) == RB_POWERDOWN) { 356 /* Power off here if we know how...*/ 357 } 358 359 if (howto & RB_HALT) { 360 printf("halted\n\n"); 361 362 goto reboot; /* XXX for now... */ 363 364 #ifdef DDB 365 printf("dropping to debugger\n"); 366 while(1) 367 Debugger(); 368 #endif 369 } 370 371 printf("rebooting\n\n"); 372 if (what && *what) { 373 if (strlen(what) > sizeof str - 5) 374 printf("boot string too large, ignored\n"); 375 else { 376 strcpy(str, what); 377 ap1 = ap = str + strlen(str); 378 *ap++ = ' '; 379 } 380 } 381 *ap++ = '-'; 382 if (howto & RB_SINGLE) 383 *ap++ = 's'; 384 if (howto & RB_KDB) 385 *ap++ = 'd'; 386 *ap++ = 0; 387 if (ap[-2] == '-') 388 *ap1 = 0; 389 390 /* flush cache for msgbuf */ 391 __syncicache((void *)msgbuf_paddr, round_page(MSGBUFSIZE)); 392 393 reboot: 394 ppc4xx_reset(); 395 396 printf("ppc4xx_reset() failed!\n"); 397 #ifdef DDB 398 while(1) 399 Debugger(); 400 #else 401 while (1) 402 /* nothing */; 403 #endif 404 } 405 406 void 407 mem_regions(struct mem_region **mem, struct mem_region **avail) 408 { 409 410 *mem = physmemr; 411 *avail = availmemr; 412 } 413 414 415 int 416 ibm4xx_pci_bus_maxdevs(void *v, int busno) 417 { 418 419 /* 420 * Bus number is irrelevant. Configuration Mechanism 1 is in 421 * use, can have devices 0-32 (i.e. the `normal' range). 422 */ 423 return 5; 424 } 425 426 int 427 ibm4xx_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) 428 { 429 int pin = pa->pa_intrpin; 430 int dev = pa->pa_device; 431 432 if (pin == 0) 433 /* No IRQ used. */ 434 goto bad; 435 436 if (pin > 4) { 437 printf("%s: bad interrupt pin %d\n", __func__, pin); 438 goto bad; 439 } 440 441 /* 442 * We need to map the interrupt pin to the interrupt bit in the UIC 443 * associated with it. This is highly machine-dependent. 444 */ 445 switch(dev) { 446 case 1: 447 case 2: 448 case 3: 449 case 4: 450 *ihp = 27 + dev; 451 break; 452 default: 453 printf("Hmm.. PCI device %d should not exist on this board\n", 454 dev); 455 goto bad; 456 } 457 return 0; 458 459 bad: 460 *ihp = -1; 461 return 1; 462 } 463 464 void 465 ibm4xx_pci_conf_interrupt(void *v, int bus, int dev, int pin, int swiz, 466 int *iline) 467 { 468 469 if (bus == 0) { 470 switch(dev) { 471 case 1: 472 case 2: 473 case 3: 474 case 4: 475 *iline = 31 - dev; 476 } 477 } else 478 *iline = 20 + ((swiz + dev + 1) & 3); 479 } 480
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