obs266_machdep.c revision 1.10
1 /* $NetBSD: obs266_machdep.c,v 1.10 2009/02/13 22:41:01 apb 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 1.10 2009/02/13 22:41:01 apb 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.h> 87 #include <uvm/uvm_extern.h> 88 89 #include <machine/bus.h> 90 #include <machine/cpu.h> 91 #include <machine/obs266.h> 92 #include <powerpc/spr.h> 93 94 #include <dev/pci/pcivar.h> 95 #include <dev/pci/pciconf.h> 96 97 #include <powerpc/ibm4xx/dcr405gp.h> 98 #include <powerpc/ibm4xx/openbios.h> 99 100 #include "ksyms.h" 101 102 103 #define TLB_PG_SIZE (16*1024*1024) 104 105 /* 106 * Global variables used here and there 107 */ 108 char bootpath[256]; 109 110 extern paddr_t msgbuf_paddr; 111 112 #if NKSYMS || defined(DDB) || defined(MODULAR) 113 void *startsym, *endsym; 114 #endif 115 116 void initppc(u_int, u_int, char *, void *); 117 int lcsplx(int); 118 119 120 void 121 initppc(u_int startkernel, u_int endkernel, char *args, void *info_block) 122 { 123 vaddr_t va; 124 u_int memsize; 125 126 /* Disable all external interrupts */ 127 mtdcr(DCR_UIC0_ER, 0); 128 129 /* Setup board from OpenBIOS */ 130 openbios_board_init(info_block, startkernel); 131 memsize = openbios_board_memsize_get(); 132 133 /* Linear map kernel memory */ 134 for (va = 0; va < endkernel; va += TLB_PG_SIZE) 135 ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX); 136 137 /* Map console after RAM (see pmap_tlbmiss()) */ 138 ppc4xx_tlb_reserve(OBS405_CONADDR, roundup(memsize, TLB_PG_SIZE), 139 TLB_PG_SIZE, TLB_I | TLB_G); 140 141 /* Initialize IBM405GPr CPU */ 142 ibm40x_memsize_init(memsize, startkernel); 143 ibm4xx_init((void (*)(void))ext_intr); 144 145 /* 146 * Set the page size. 147 */ 148 uvm_setpagesize(); 149 150 /* 151 * Initialize pmap module. 152 */ 153 pmap_bootstrap(startkernel, endkernel); 154 155 #ifdef DEBUG 156 openbios_board_print(); 157 #endif 158 159 #if NKSYMS || defined(DDB) || defined(MODULAR) 160 ksyms_addsyms_elf((int)((u_int)endsym - (u_int)startsym), startsym, endsym); 161 #endif 162 #ifdef DDB 163 if (boothowto & RB_KDB) 164 Debugger(); 165 #endif 166 #ifdef IPKDB 167 /* 168 * Now trap to IPKDB 169 */ 170 ipkdb_init(); 171 if (boothowto & RB_KDB) 172 ipkdb_connect(0); 173 #endif 174 } 175 176 void 177 consinit(void) 178 { 179 180 obs405_consinit(OBS266_COM_FREQ); 181 } 182 183 int 184 lcsplx(int ipl) 185 { 186 187 return spllower(ipl); /* XXX */ 188 } 189 190 191 /* 192 * Machine dependent startup code. 193 */ 194 void 195 cpu_startup(void) 196 { 197 198 /* 199 * cpu common startup 200 */ 201 ibm4xx_cpu_startup("OpenBlockS266 IBM PowerPC 405GPr Board"); 202 203 /* 204 * Set up the board properties database. 205 */ 206 openbios_board_info_set(); 207 208 /* 209 * Now that we have VM, malloc()s are OK in bus_space. 210 */ 211 bus_space_mallocok(); 212 213 /* 214 * no fake mapiodev 215 */ 216 fake_mapiodev = 0; 217 } 218 219 /* 220 * Halt or reboot the machine after syncing/dumping according to howto. 221 */ 222 void 223 cpu_reboot(int howto, char *what) 224 { 225 static int syncing; 226 static char str[256]; 227 char *ap = str, *ap1 = ap; 228 229 boothowto = howto; 230 if (!cold && !(howto & RB_NOSYNC) && !syncing) { 231 syncing = 1; 232 vfs_shutdown(); /* sync */ 233 resettodr(); /* set wall clock */ 234 } 235 236 splhigh(); 237 238 if (!cold && (howto & RB_DUMP)) 239 ibm4xx_dumpsys(); 240 241 doshutdownhooks(); 242 243 pmf_system_shutdown(boothowto); 244 245 if ((howto & RB_POWERDOWN) == RB_POWERDOWN) { 246 /* Power off here if we know how...*/ 247 } 248 249 if (howto & RB_HALT) { 250 printf("halted\n\n"); 251 252 #if 0 253 goto reboot; /* XXX for now... */ 254 #endif 255 256 #ifdef DDB 257 printf("dropping to debugger\n"); 258 while(1) 259 Debugger(); 260 #endif 261 } 262 263 printf("rebooting\n\n"); 264 if (what && *what) { 265 if (strlen(what) > sizeof str - 5) 266 printf("boot string too large, ignored\n"); 267 else { 268 strcpy(str, what); 269 ap1 = ap = str + strlen(str); 270 *ap++ = ' '; 271 } 272 } 273 *ap++ = '-'; 274 if (howto & RB_SINGLE) 275 *ap++ = 's'; 276 if (howto & RB_KDB) 277 *ap++ = 'd'; 278 *ap++ = 0; 279 if (ap[-2] == '-') 280 *ap1 = 0; 281 282 /* flush cache for msgbuf */ 283 __syncicache((void *)msgbuf_paddr, round_page(MSGBUFSIZE)); 284 285 #if 0 286 reboot: 287 #endif 288 ppc4xx_reset(); 289 290 printf("ppc4xx_reset() failed!\n"); 291 #ifdef DDB 292 while(1) 293 Debugger(); 294 #else 295 while (1) 296 /* nothing */; 297 #endif 298 } 299 300 int 301 pci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) 302 { 303 /* 304 * We need to map the interrupt pin to the interrupt bit 305 * in the UIC associated with it. 306 * 307 * This platform has 4 PCI devices. 308 * 309 # External IRQ Mappings: 310 * dev 1 (Ext IRQ3): PCI Connector 311 * dev 2 (Ext IRQ4): PCI Connector 312 * dev 3 (Ext IRQ5): HPT IDE Controller 313 * dev 4 (Ext IRQ6): Davicom Ethernet 314 */ 315 static const int irqmap[4/*device*/][4/*pin*/] = { 316 { 3, 3, 3, 3 }, /* 1: PCI Connector 1 */ 317 { 4, 4, 4, 4 }, /* 2: PCI Connector 2 */ 318 { 5, 5, -1, -1 }, /* 3: HPT IDE Controller */ 319 { 6, 6, -1, -1 }, /* 4: Damicom Ethernet */ 320 }; 321 322 int pin, dev, irq; 323 324 pin = pa->pa_intrpin; 325 dev = pa->pa_device; 326 *ihp = -1; 327 328 /* if interrupt pin not used... */ 329 if (pin == 0) 330 return 1; 331 332 if (pin > 4) { 333 printf("pci_intr_map: bad interrupt pin %d\n", pin); 334 return 1; 335 } 336 337 if ((dev < 1) || (dev > 4)) { 338 printf("pci_intr_map: bad device %d\n", dev); 339 return 1; 340 } 341 342 343 if ((irq = irqmap[dev - 1][pin - 1]) == -1) { 344 printf("pci_intr_map: no IRQ routing for device %d pin %d\n", 345 dev, pin); 346 return 1; 347 } 348 349 *ihp = irq + 25; 350 return 0; 351 } 352 353 void 354 pci_conf_interrupt(pci_chipset_tag_t pc, int bus, int dev, int pin, 355 int swiz, int *iline) 356 { 357 358 static const int ilinemap[4/*device*/] = { 359 3, 4, 5 ,6 360 }; 361 362 if ((dev < 1) || (dev > 4)) { 363 printf("pci_intr_map: bad device %d\n", dev); 364 *iline = 0; 365 return; 366 } 367 *iline = ilinemap[dev - 1] + 25; 368 } 369
Indexes created Tue Sep 30 20:09:53 GMT 2025