ibm40x_machdep.c revision 1.3
1 /* $NetBSD: ibm40x_machdep.c,v 1.3 2005/01/17 17:19:36 shige 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: ibm40x_machdep.c,v 1.3 2005/01/17 17:19:36 shige Exp $"); 71 72 #include "opt_compat_netbsd.h" 73 #include "opt_ddb.h" 74 #include "opt_kgdb.h" 75 #include "opt_ipkdb.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/sa.h> 87 #include <sys/syscallargs.h> 88 #include <sys/syslog.h> 89 #include <sys/systm.h> 90 #include <sys/kernel.h> 91 #include <sys/user.h> 92 #include <sys/boot_flag.h> 93 #include <sys/properties.h> 94 #include <sys/ksyms.h> 95 96 #include <uvm/uvm_extern.h> 97 98 #include <net/netisr.h> 99 100 #if defined(DDB) 101 #include <machine/db_machdep.h> 102 #include <ddb/db_extern.h> 103 #endif 104 105 #if defined(KGDB) 106 #include <sys/kgdb.h> 107 #endif 108 109 #if defined(IPKDB) 110 #include <ipkdb/ipkdb.h> 111 #endif 112 113 #include <machine/bus.h> 114 #include <machine/trap.h> 115 #include <machine/powerpc.h> 116 #include <powerpc/spr.h> 117 #include <powerpc/ibm4xx/dcr405gp.h> 118 119 /* 120 * Global variables used here and there 121 */ 122 struct vm_map *exec_map = NULL; 123 struct vm_map *mb_map = NULL; 124 struct vm_map *phys_map = NULL; 125 126 char machine[] = MACHINE; /* from <machine/param.h> */ 127 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 128 129 #define MEMREGIONS 8 130 struct mem_region physmemr[MEMREGIONS]; /* Hard code memory */ 131 struct mem_region availmemr[MEMREGIONS];/* Who's supposed to set these up? */ 132 133 extern struct user *proc0paddr; 134 135 paddr_t msgbuf_paddr; 136 vaddr_t msgbuf_vaddr; 137 138 139 void 140 ibm40x_memsize_init(u_int memsize, u_int startkernel) 141 { 142 143 /* Initialize cache info for memcpy, etc. */ 144 cpu_probe_cache(); 145 146 memset(physmemr, 0, sizeof physmemr); 147 memset(availmemr, 0, sizeof availmemr); 148 physmemr[0].start = 0; 149 physmemr[0].size = memsize & ~PGOFSET; 150 /* Lower memory reserved by eval board BIOS */ 151 availmemr[0].start = startkernel; 152 availmemr[0].size = memsize - availmemr[0].start; 153 } 154 155 void 156 ibm4xx_init(void (*handler)(void)) 157 { 158 extern int defaulttrap, defaultsize; 159 extern int sctrap, scsize; 160 extern int alitrap, alisize; 161 extern int dsitrap, dsisize; 162 extern int isitrap, isisize; 163 extern int mchktrap, mchksize; 164 extern int tlbimiss4xx, tlbim4size; 165 extern int tlbdmiss4xx, tlbdm4size; 166 extern int pitfitwdog, pitfitwdogsize; 167 extern int debugtrap, debugsize; 168 extern int errata51handler, errata51size; 169 #ifdef DDB 170 extern int ddblow, ddbsize; 171 #endif 172 #ifdef IPKDB 173 extern int ipkdblow, ipkdbsize; 174 #endif 175 uintptr_t exc; 176 struct cpu_info * const ci = curcpu(); 177 178 /* Initialize cache info for memcpy, etc. */ 179 cpu_probe_cache(); 180 181 /* 182 * Initialize lwp0 and current pcb and pmap pointers. 183 */ 184 KASSERT(ci != NULL); 185 KASSERT(curcpu() == ci); 186 lwp0.l_cpu = ci; 187 lwp0.l_addr = proc0paddr; 188 memset(lwp0.l_addr, 0, sizeof *lwp0.l_addr); 189 KASSERT(lwp0.l_cpu != NULL); 190 191 curpcb = &proc0paddr->u_pcb; 192 memset(curpcb, 0, sizeof(*curpcb)); 193 curpcb->pcb_pm = pmap_kernel(); 194 195 /* 196 * Set up trap vectors 197 */ 198 for (exc = EXC_RSVD; exc <= EXC_LAST; exc += 0x100) 199 switch (exc) { 200 default: 201 memcpy((void *)exc, &defaulttrap, (size_t)&defaultsize); 202 break; 203 case EXC_EXI: 204 /* 205 * This one is (potentially) installed during autoconf 206 */ 207 break; 208 case EXC_SC: 209 memcpy((void *)EXC_SC, &sctrap, (size_t)&scsize); 210 break; 211 case EXC_ALI: 212 memcpy((void *)EXC_ALI, &alitrap, (size_t)&alisize); 213 break; 214 case EXC_DSI: 215 memcpy((void *)EXC_DSI, &dsitrap, (size_t)&dsisize); 216 break; 217 case EXC_ISI: 218 memcpy((void *)EXC_ISI, &isitrap, (size_t)&isisize); 219 break; 220 case EXC_MCHK: 221 memcpy((void *)EXC_MCHK, &mchktrap, (size_t)&mchksize); 222 break; 223 case EXC_ITMISS: 224 memcpy((void *)EXC_ITMISS, &tlbimiss4xx, 225 (size_t)&tlbim4size); 226 break; 227 case EXC_DTMISS: 228 memcpy((void *)EXC_DTMISS, &tlbdmiss4xx, 229 (size_t)&tlbdm4size); 230 break; 231 /* 232 * EXC_PIT, EXC_FIT, EXC_WDOG handlers 233 * are spaced by 0x10 bytes only.. 234 */ 235 case EXC_PIT: 236 memcpy((void *)EXC_PIT, &pitfitwdog, 237 (size_t)&pitfitwdogsize); 238 break; 239 case EXC_DEBUG: 240 memcpy((void *)EXC_DEBUG, &debugtrap, 241 (size_t)&debugsize); 242 break; 243 case EXC_DTMISS|EXC_ALI: 244 /* PPC405GP Rev D errata item 51 */ 245 memcpy((void *)(EXC_DTMISS|EXC_ALI), &errata51handler, 246 (size_t)&errata51size); 247 break; 248 #if defined(DDB) || defined(IPKDB) 249 case EXC_PGM: 250 #if defined(DDB) 251 memcpy((void *)exc, &ddblow, (size_t)&ddbsize); 252 #elif defined(IPKDB) 253 memcpy((void *)exc, &ipkdblow, (size_t)&ipkdbsize); 254 #endif 255 #endif /* DDB | IPKDB */ 256 break; 257 } 258 259 __syncicache((void *)EXC_RST, EXC_LAST - EXC_RST + 0x100); 260 mtspr(SPR_EVPR, 0); /* Set Exception vector base */ 261 262 consinit(); 263 264 /* Handle trap instruction as PGM exception */ 265 { 266 int dbcr0; 267 asm volatile("mfspr %0,%1":"=r"(dbcr0):"K"(SPR_DBCR0)); 268 asm volatile("mtspr %0,%1"::"K"(SPR_DBCR0),"r"(dbcr0 & ~DBCR0_TDE)); 269 } 270 271 /* 272 * external interrupt handler install 273 */ 274 if (handler) 275 ibm4xx_install_extint(handler); 276 277 /* 278 * Now enable translation (and machine checks/recoverable interrupts). 279 */ 280 asm volatile ("mfmsr %0; ori %0,%0,%1; mtmsr %0; isync" 281 : : "r"(0), "K"(PSL_IR|PSL_DR)); 282 /* XXXX PSL_ME - With ME set kernel gets stuck... */ 283 284 KASSERT(curcpu() == ci); 285 } 286 287 void 288 ibm4xx_install_extint(void (*handler)(void)) 289 { 290 extern int extint, extsize; 291 extern u_long extint_call; 292 u_long offset = (u_long)handler - (u_long)&extint_call; 293 int msr; 294 295 #ifdef DIAGNOSTIC 296 if (offset > 0x1ffffff) 297 panic("install_extint: too far away"); 298 #endif 299 asm volatile ("mfmsr %0; wrteei 0" : "=r"(msr)); 300 extint_call = (extint_call & 0xfc000003) | offset; 301 memcpy((void *)EXC_EXI, &extint, (size_t)&extsize); 302 __syncicache((void *)&extint_call, sizeof extint_call); 303 __syncicache((void *)EXC_EXI, (int)&extsize); 304 asm volatile ("mtmsr %0" :: "r"(msr)); 305 } 306 307 /* 308 * Machine dependent startup code. 309 */ 310 311 char msgbuf[MSGBUFSIZE]; 312 313 void 314 ibm4xx_startup(const char *model) 315 { 316 vaddr_t minaddr, maxaddr; 317 char pbuf[9]; 318 319 KASSERT(curcpu() != NULL); 320 KASSERT(lwp0.l_cpu != NULL); 321 KASSERT(curcpu()->ci_intstk != 0); 322 KASSERT(curcpu()->ci_intrdepth == -1); 323 324 /* 325 * Initialize error message buffer (at end of core). 326 */ 327 #if 0 /* For some reason this fails... --Artem 328 * Besides, do we really have to put it at the end of core? 329 * Let's use static buffer for now 330 */ 331 if (!(msgbuf_vaddr = uvm_km_alloc(kernel_map, round_page(MSGBUFSIZE)))) 332 panic("startup: no room for message buffer"); 333 for (i = 0; i < btoc(MSGBUFSIZE); i++) 334 pmap_kenter_pa(msgbuf_vaddr + i * PAGE_SIZE, 335 msgbuf_paddr + i * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE); 336 initmsgbuf((caddr_t)msgbuf_vaddr, round_page(MSGBUFSIZE)); 337 #else 338 initmsgbuf((caddr_t)msgbuf, round_page(MSGBUFSIZE)); 339 #endif 340 341 printf("%s", version); 342 if (model != NULL) 343 printf("Model: %s\n", model); 344 345 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 346 printf("total memory = %s\n", pbuf); 347 348 minaddr = 0; 349 /* 350 * Allocate a submap for exec arguments. This map effectively 351 * limits the number of processes exec'ing at any time. 352 */ 353 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 354 16*NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 355 356 /* 357 * Allocate a submap for physio 358 */ 359 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 360 VM_PHYS_SIZE, 0, FALSE, NULL); 361 362 /* 363 * No need to allocate an mbuf cluster submap. Mbuf clusters 364 * are allocated via the pool allocator, and we use direct-mapped 365 * pool pages. 366 */ 367 368 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 369 printf("avail memory = %s\n", pbuf); 370 } 371 372 /* 373 * Crash dump handling. 374 */ 375 void 376 ibm4xx_dumpsys(void) 377 { 378 printf("dumpsys: TBD\n"); 379 } 380 381 /* 382 * Soft networking interrupts. 383 */ 384 void 385 softnet(void) 386 { 387 int isr; 388 389 isr = netisr; 390 netisr = 0; 391 392 #define DONETISR(bit, fn) do { \ 393 if (isr & (1 << bit)) \ 394 fn(); \ 395 } while (0) 396 397 #include <net/netisr_dispatch.h> 398 399 #undef DONETISR 400 401 } 402 403 /* 404 * Soft tty interrupts. 405 */ 406 #include "com.h" 407 void 408 softserial(void) 409 { 410 #if NCOM > 0 411 void comsoft(void); /* XXX from dev/ic/com.c */ 412 413 comsoft(); 414 #endif 415 } 416 417 void 418 mem_regions(struct mem_region **mem, struct mem_region **avail) 419 { 420 *mem = physmemr; 421 *avail = availmemr; 422 } 423
Indexes created Tue Sep 30 11:09:46 GMT 2025