1 /* $NetBSD: obs266_machdep.c,v 1.20 2011/06/22 18:06:32 matt 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 1.20 2011/06/22 18:06:32 matt Exp $"); 72 73 #include "opt_compat_netbsd.h" 74 #include "opt_ddb.h" 75 #include "opt_ipkdb.h" 76 77 #include <sys/param.h> 78 #include <sys/kernel.h> 79 #include <sys/ksyms.h> 80 #include <sys/mount.h> 81 #include <sys/reboot.h> 82 #include <sys/systm.h> 83 #include <sys/device.h> 84 #include <sys/module.h> 85 #include <sys/bus.h> 86 #include <sys/cpu.h> 87 88 #include <uvm/uvm_extern.h> 89 90 #include <machine/obs266.h> 91 92 #include <powerpc/ibm4xx/dcr4xx.h> 93 #include <powerpc/ibm4xx/cpu.h> 94 #include <powerpc/ibm4xx/ibm405gp.h> 95 #include <powerpc/ibm4xx/pci_machdep.h> 96 #include <powerpc/ibm4xx/openbios.h> 97 #include <powerpc/ibm4xx/dev/comopbvar.h> 98 99 #include <powerpc/spr.h> 100 #include <powerpc/ibm4xx/spr.h> 101 102 #include <dev/ic/comreg.h> 103 #include <dev/pci/pcivar.h> 104 #include <dev/pci/pciconf.h> 105 106 #include "ksyms.h" 107 108 #include "com.h" 109 #if (NCOM > 0) 110 #include <sys/termios.h> 111 112 #ifndef CONADDR 113 #define CONADDR IBM405GP_UART0_BASE 114 #endif 115 #ifndef CONSPEED 116 #define CONSPEED B9600 117 #endif 118 #ifndef CONMODE 119 /* 8N1 */ 120 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) 121 #endif 122 #endif /* NCOM */ 123 124 #define TLB_PG_SIZE (16*1024*1024) 125 126 /* 127 * Global variables used here and there 128 */ 129 char bootpath[256]; 130 131 extern paddr_t msgbuf_paddr; 132 133 void initppc(vaddr_t, vaddr_t, char *, void *); 134 135 void 136 initppc(vaddr_t startkernel, vaddr_t endkernel, char *args, void *info_block) 137 { 138 vaddr_t va; 139 u_int memsize; 140 141 /* Setup board from OpenBIOS */ 142 openbios_board_init(info_block, startkernel); 143 memsize = openbios_board_memsize_get(); 144 145 /* Linear map kernel memory */ 146 for (va = 0; va < endkernel; va += TLB_PG_SIZE) 147 ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX); 148 149 /* Map console after RAM (see pmap_tlbmiss()) */ 150 ppc4xx_tlb_reserve(CONADDR, roundup(memsize, TLB_PG_SIZE), TLB_PG_SIZE, 151 TLB_I | TLB_G); 152 153 /* Initialize IBM405GPr CPU */ 154 ibm40x_memsize_init(memsize, startkernel); 155 ibm4xx_init(startkernel, endkernel, pic_ext_intr); 156 157 #ifdef DEBUG 158 openbios_board_print(); 159 #endif 160 161 #ifdef DDB 162 if (boothowto & RB_KDB) 163 Debugger(); 164 #endif 165 #ifdef IPKDB 166 /* 167 * Now trap to IPKDB 168 */ 169 ipkdb_init(); 170 if (boothowto & RB_KDB) 171 ipkdb_connect(0); 172 #endif 173 174 /* 175 * Look for the ibm4xx modules in the right place. 176 */ 177 module_machine = module_machine_ibm4xx; 178 } 179 180 void 181 consinit(void) 182 { 183 184 #if (NCOM > 0) 185 com_opb_cnattach(OBS266_COM_FREQ, CONADDR, CONSPEED, CONMODE); 186 #endif 187 } 188 189 /* 190 * Machine dependent startup code. 191 */ 192 void 193 cpu_startup(void) 194 { 195 196 /* 197 * cpu common startup 198 */ 199 ibm4xx_cpu_startup("OpenBlockS266 IBM PowerPC 405GPr Board"); 200 201 /* 202 * Set up the board properties database. 203 */ 204 openbios_board_info_set(); 205 206 /* 207 * Now that we have VM, malloc()s are OK in bus_space. 208 */ 209 bus_space_mallocok(); 210 211 /* 212 * no fake mapiodev 213 */ 214 fake_mapiodev = 0; 215 } 216 217 /* 218 * Halt or reboot the machine after syncing/dumping according to howto. 219 */ 220 void 221 cpu_reboot(int howto, char *what) 222 { 223 static int syncing; 224 static char str[256]; 225 char *ap = str, *ap1 = ap; 226 227 boothowto = howto; 228 if (!cold && !(howto & RB_NOSYNC) && !syncing) { 229 syncing = 1; 230 vfs_shutdown(); /* sync */ 231 resettodr(); /* set wall clock */ 232 } 233 234 splhigh(); 235 236 if (!cold && (howto & RB_DUMP)) 237 ibm4xx_dumpsys(); 238 239 doshutdownhooks(); 240 241 pmf_system_shutdown(boothowto); 242 243 if ((howto & RB_POWERDOWN) == RB_POWERDOWN) { 244 /* Power off here if we know how...*/ 245 } 246 247 if (howto & RB_HALT) { 248 printf("halted\n\n"); 249 250 #if 0 251 goto reboot; /* XXX for now... */ 252 #endif 253 254 #ifdef DDB 255 printf("dropping to debugger\n"); 256 while(1) 257 Debugger(); 258 #endif 259 } 260 261 printf("rebooting\n\n"); 262 if (what && *what) { 263 if (strlen(what) > sizeof str - 5) 264 printf("boot string too large, ignored\n"); 265 else { 266 strcpy(str, what); 267 ap1 = ap = str + strlen(str); 268 *ap++ = ' '; 269 } 270 } 271 *ap++ = '-'; 272 if (howto & RB_SINGLE) 273 *ap++ = 's'; 274 if (howto & RB_KDB) 275 *ap++ = 'd'; 276 *ap++ = 0; 277 if (ap[-2] == '-') 278 *ap1 = 0; 279 280 /* flush cache for msgbuf */ 281 __syncicache((void *)msgbuf_paddr, round_page(MSGBUFSIZE)); 282 283 #if 0 284 reboot: 285 #endif 286 ppc4xx_reset(); 287 288 printf("ppc4xx_reset() failed!\n"); 289 #ifdef DDB 290 while(1) 291 Debugger(); 292 #else 293 while (1) 294 /* nothing */; 295 #endif 296 } 297 298 int 299 ibm4xx_pci_bus_maxdevs(void *v, int busno) 300 { 301 302 /* 303 * Bus number is irrelevant. Configuration Mechanism 1 is in 304 * use, can have devices 0-32 (i.e. the `normal' range). 305 */ 306 return 31; 307 } 308 309 int 310 ibm4xx_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) 311 { 312 /* 313 * We need to map the interrupt pin to the interrupt bit 314 * in the UIC associated with it. 315 * 316 * This platform has 4 PCI devices. 317 * 318 # External IRQ Mappings: 319 * dev 1 (Ext IRQ3): PCI Connector 320 * dev 2 (Ext IRQ4): PCI Connector 321 * dev 3 (Ext IRQ5): HPT IDE Controller 322 * dev 4 (Ext IRQ6): Davicom Ethernet 323 */ 324 static const int irqmap[4/*device*/][4/*pin*/] = { 325 { 3, 3, 3, 3 }, /* 1: PCI Connector 1 */ 326 { 4, 4, 4, 4 }, /* 2: PCI Connector 2 */ 327 { 5, 5, -1, -1 }, /* 3: HPT IDE Controller */ 328 { 6, 6, -1, -1 }, /* 4: Damicom Ethernet */ 329 }; 330 331 int pin, dev, irq; 332 333 pin = pa->pa_intrpin; 334 dev = pa->pa_device; 335 *ihp = -1; 336 337 /* if interrupt pin not used... */ 338 if (pin == 0) 339 return 1; 340 341 if (pin > 4) { 342 printf("pci_intr_map: bad interrupt pin %d\n", pin); 343 return 1; 344 } 345 346 if ((dev < 1) || (dev > 4)) { 347 printf("pci_intr_map: bad device %d\n", dev); 348 return 1; 349 } 350 351 352 if ((irq = irqmap[dev - 1][pin - 1]) == -1) { 353 printf("pci_intr_map: no IRQ routing for device %d pin %d\n", 354 dev, pin); 355 return 1; 356 } 357 358 *ihp = irq + 25; 359 return 0; 360 } 361 362 void 363 ibm4xx_pci_conf_interrupt(void *v, int bus, int dev, int pin, int swiz, 364 int *iline) 365 { 366 367 static const int ilinemap[4/*device*/] = { 368 28, 29, 30, 31 369 }; 370 371 if ((dev < 1) || (dev > 4)) { 372 printf("%s: bad device %d\n", __func__, dev); 373 *iline = 0; 374 return; 375 } 376 *iline = ilinemap[dev - 1]; 377 } 378