obs266_machdep.c revision 1.15
1 /* $NetBSD: obs266_machdep.c,v 1.15 2011/04/04 20:37:50 dyoung Exp $ */ 2 /* Original: md_machdep.c,v 1.3 2005/01/24 18:47:37 shige Exp $ */ 3 4 /* 5 * Copyright 2001, 2002 Wasabi Systems, Inc. 6 * All rights reserved. 7 * 8 * Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed for the NetBSD Project by 21 * Wasabi Systems, Inc. 22 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 23 * or promote products derived from this software without specific prior 24 * written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 41 * Copyright (C) 1995, 1996 TooLs GmbH. 42 * All rights reserved. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. Redistributions in binary form must reproduce the above copyright 50 * notice, this list of conditions and the following disclaimer in the 51 * documentation and/or other materials provided with the distribution. 52 * 3. All advertising materials mentioning features or use of this software 53 * must display the following acknowledgement: 54 * This product includes software developed by TooLs GmbH. 55 * 4. The name of TooLs GmbH may not be used to endorse or promote products 56 * derived from this software without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 59 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 60 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 61 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 62 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 63 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 64 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 65 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 66 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 67 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 68 */ 69 70 #include <sys/cdefs.h> 71 __KERNEL_RCSID(0, "$NetBSD: obs266_machdep.c,v 1.15 2011/04/04 20:37:50 dyoung Exp $"); 72 73 #include "opt_compat_netbsd.h" 74 #include "opt_ddb.h" 75 #include "opt_ipkdb.h" 76 #include "opt_modular.h" 77 78 #include <sys/param.h> 79 #include <sys/kernel.h> 80 #include <sys/ksyms.h> 81 #include <sys/mount.h> 82 #include <sys/reboot.h> 83 #include <sys/systm.h> 84 #include <sys/device.h> 85 86 #include <uvm/uvm_extern.h> 87 88 #include <machine/bus.h> 89 #include <machine/cpu.h> 90 #include <machine/obs266.h> 91 #include <powerpc/spr.h> 92 #include <powerpc/ibm4xx/dcr4xx.h> 93 #include <powerpc/ibm4xx/dev/comopbvar.h> 94 #include <powerpc/ibm4xx/ibm405gp.h> 95 #include <powerpc/ibm4xx/openbios.h> 96 #include <powerpc/ibm4xx/spr.h> 97 98 #include <dev/ic/comreg.h> 99 #include <dev/pci/pcivar.h> 100 #include <dev/pci/pciconf.h> 101 102 #include "ksyms.h" 103 104 #include "com.h" 105 #if (NCOM > 0) 106 #include <sys/termios.h> 107 108 #ifndef CONADDR 109 #define CONADDR IBM405GP_UART0_BASE 110 #endif 111 #ifndef CONSPEED 112 #define CONSPEED B9600 113 #endif 114 #ifndef CONMODE 115 /* 8N1 */ 116 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) 117 #endif 118 #endif /* NCOM */ 119 120 #define TLB_PG_SIZE (16*1024*1024) 121 122 /* 123 * Global variables used here and there 124 */ 125 char bootpath[256]; 126 127 extern paddr_t msgbuf_paddr; 128 129 #if NKSYMS || defined(DDB) || defined(MODULAR) 130 void *startsym, *endsym; 131 #endif 132 133 void initppc(u_int, u_int, char *, void *); 134 int lcsplx(int); 135 136 137 void 138 initppc(u_int startkernel, u_int endkernel, char *args, void *info_block) 139 { 140 vaddr_t va; 141 u_int memsize; 142 143 /* Setup board from OpenBIOS */ 144 openbios_board_init(info_block, startkernel); 145 memsize = openbios_board_memsize_get(); 146 147 /* Linear map kernel memory */ 148 for (va = 0; va < endkernel; va += TLB_PG_SIZE) 149 ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX); 150 151 /* Map console after RAM (see pmap_tlbmiss()) */ 152 ppc4xx_tlb_reserve(CONADDR, roundup(memsize, TLB_PG_SIZE), TLB_PG_SIZE, 153 TLB_I | TLB_G); 154 155 /* Initialize IBM405GPr CPU */ 156 ibm40x_memsize_init(memsize, startkernel); 157 ibm4xx_init((void (*)(void))ext_intr); 158 159 /* 160 * Set the page size. 161 */ 162 uvm_setpagesize(); 163 164 /* 165 * Initialize pmap module. 166 */ 167 pmap_bootstrap(startkernel, endkernel); 168 169 #ifdef DEBUG 170 openbios_board_print(); 171 #endif 172 173 #if NKSYMS || defined(DDB) || defined(MODULAR) 174 ksyms_addsyms_elf((int)((u_int)endsym - (u_int)startsym), startsym, endsym); 175 #endif 176 #ifdef DDB 177 if (boothowto & RB_KDB) 178 Debugger(); 179 #endif 180 #ifdef IPKDB 181 /* 182 * Now trap to IPKDB 183 */ 184 ipkdb_init(); 185 if (boothowto & RB_KDB) 186 ipkdb_connect(0); 187 #endif 188 } 189 190 void 191 consinit(void) 192 { 193 194 #if (NCOM > 0) 195 com_opb_cnattach(OBS266_COM_FREQ, CONADDR, CONSPEED, CONMODE); 196 #endif 197 } 198 199 int 200 lcsplx(int ipl) 201 { 202 203 return spllower(ipl); /* XXX */ 204 } 205 206 207 /* 208 * Machine dependent startup code. 209 */ 210 void 211 cpu_startup(void) 212 { 213 214 /* 215 * cpu common startup 216 */ 217 ibm4xx_cpu_startup("OpenBlockS266 IBM PowerPC 405GPr Board"); 218 219 /* 220 * Set up the board properties database. 221 */ 222 openbios_board_info_set(); 223 224 /* 225 * Now that we have VM, malloc()s are OK in bus_space. 226 */ 227 bus_space_mallocok(); 228 229 /* 230 * no fake mapiodev 231 */ 232 fake_mapiodev = 0; 233 } 234 235 /* 236 * Halt or reboot the machine after syncing/dumping according to howto. 237 */ 238 void 239 cpu_reboot(int howto, char *what) 240 { 241 static int syncing; 242 static char str[256]; 243 char *ap = str, *ap1 = ap; 244 245 boothowto = howto; 246 if (!cold && !(howto & RB_NOSYNC) && !syncing) { 247 syncing = 1; 248 vfs_shutdown(); /* sync */ 249 resettodr(); /* set wall clock */ 250 } 251 252 splhigh(); 253 254 if (!cold && (howto & RB_DUMP)) 255 ibm4xx_dumpsys(); 256 257 doshutdownhooks(); 258 259 pmf_system_shutdown(boothowto); 260 261 if ((howto & RB_POWERDOWN) == RB_POWERDOWN) { 262 /* Power off here if we know how...*/ 263 } 264 265 if (howto & RB_HALT) { 266 printf("halted\n\n"); 267 268 #if 0 269 goto reboot; /* XXX for now... */ 270 #endif 271 272 #ifdef DDB 273 printf("dropping to debugger\n"); 274 while(1) 275 Debugger(); 276 #endif 277 } 278 279 printf("rebooting\n\n"); 280 if (what && *what) { 281 if (strlen(what) > sizeof str - 5) 282 printf("boot string too large, ignored\n"); 283 else { 284 strcpy(str, what); 285 ap1 = ap = str + strlen(str); 286 *ap++ = ' '; 287 } 288 } 289 *ap++ = '-'; 290 if (howto & RB_SINGLE) 291 *ap++ = 's'; 292 if (howto & RB_KDB) 293 *ap++ = 'd'; 294 *ap++ = 0; 295 if (ap[-2] == '-') 296 *ap1 = 0; 297 298 /* flush cache for msgbuf */ 299 __syncicache((void *)msgbuf_paddr, round_page(MSGBUFSIZE)); 300 301 #if 0 302 reboot: 303 #endif 304 ppc4xx_reset(); 305 306 printf("ppc4xx_reset() failed!\n"); 307 #ifdef DDB 308 while(1) 309 Debugger(); 310 #else 311 while (1) 312 /* nothing */; 313 #endif 314 } 315 316 int 317 pci_bus_maxdevs(pci_chipset_tag_t pc, int busno) 318 { 319 320 /* 321 * Bus number is irrelevant. Configuration Mechanism 1 is in 322 * use, can have devices 0-32 (i.e. the `normal' range). 323 */ 324 return 31; 325 } 326 327 int 328 pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) 329 { 330 /* 331 * We need to map the interrupt pin to the interrupt bit 332 * in the UIC associated with it. 333 * 334 * This platform has 4 PCI devices. 335 * 336 # External IRQ Mappings: 337 * dev 1 (Ext IRQ3): PCI Connector 338 * dev 2 (Ext IRQ4): PCI Connector 339 * dev 3 (Ext IRQ5): HPT IDE Controller 340 * dev 4 (Ext IRQ6): Davicom Ethernet 341 */ 342 static const int irqmap[4/*device*/][4/*pin*/] = { 343 { 3, 3, 3, 3 }, /* 1: PCI Connector 1 */ 344 { 4, 4, 4, 4 }, /* 2: PCI Connector 2 */ 345 { 5, 5, -1, -1 }, /* 3: HPT IDE Controller */ 346 { 6, 6, -1, -1 }, /* 4: Damicom Ethernet */ 347 }; 348 349 int pin, dev, irq; 350 351 pin = pa->pa_intrpin; 352 dev = pa->pa_device; 353 *ihp = -1; 354 355 /* if interrupt pin not used... */ 356 if (pin == 0) 357 return 1; 358 359 if (pin > 4) { 360 printf("pci_intr_map: bad interrupt pin %d\n", pin); 361 return 1; 362 } 363 364 if ((dev < 1) || (dev > 4)) { 365 printf("pci_intr_map: bad device %d\n", dev); 366 return 1; 367 } 368 369 370 if ((irq = irqmap[dev - 1][pin - 1]) == -1) { 371 printf("pci_intr_map: no IRQ routing for device %d pin %d\n", 372 dev, pin); 373 return 1; 374 } 375 376 *ihp = irq + 25; 377 return 0; 378 } 379 380 void 381 pci_conf_interrupt(pci_chipset_tag_t pc, int bus, int dev, int pin, 382 int swiz, int *iline) 383 { 384 385 static const int ilinemap[4/*device*/] = { 386 3, 4, 5 ,6 387 }; 388 389 if ((dev < 1) || (dev > 4)) { 390 printf("pci_intr_map: bad device %d\n", dev); 391 *iline = 0; 392 return; 393 } 394 *iline = ilinemap[dev - 1] + 25; 395 } 396
Indexes created Tue Sep 30 20:09:53 GMT 2025