ofw_autoconf.c revision 1.10
1 /* $NetBSD: ofw_autoconf.c,v 1.10 2009/03/18 10:22:34 cegger Exp $ */ 2 /* 3 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 4 * Copyright (C) 1995, 1996 TooLs GmbH. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by TooLs GmbH. 18 * 4. The name of TooLs GmbH may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 27 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 28 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 29 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 30 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: ofw_autoconf.c,v 1.10 2009/03/18 10:22:34 cegger Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/conf.h> 38 #include <sys/device.h> 39 #include <sys/reboot.h> 40 #include <sys/systm.h> 41 42 #include <uvm/uvm_extern.h> 43 44 #include <machine/autoconf.h> 45 #include <machine/bus.h> 46 #include <machine/stdarg.h> 47 48 #include <dev/ofw/openfirm.h> 49 #include <dev/pci/pcireg.h> 50 #include <dev/pci/pcivar.h> 51 #include <dev/scsipi/scsi_all.h> 52 #include <dev/scsipi/scsipi_all.h> 53 #include <dev/scsipi/scsiconf.h> 54 #include <dev/ata/atavar.h> 55 #include <dev/ic/wdcvar.h> 56 57 extern char bootpath[256]; 58 char cbootpath[256]; 59 int console_node = 0, console_instance = 0; 60 61 static void canonicalize_bootpath(void); 62 63 /* 64 * Determine device configuration for a machine. 65 */ 66 void 67 cpu_configure(void) 68 { 69 init_interrupt(); 70 canonicalize_bootpath(); 71 72 if (config_rootfound("mainbus", NULL) == NULL) 73 panic("configure: mainbus not configured"); 74 75 genppc_cpu_configure(); 76 } 77 78 static void 79 canonicalize_bootpath(void) 80 { 81 int node; 82 char *p, *lastp; 83 char last[32]; 84 85 /* 86 * If the bootpath doesn't start with a / then it isn't 87 * an OFW path and probably is an alias, so look up the alias 88 * and regenerate the full bootpath so device_register will work. 89 */ 90 if (bootpath[0] != '/' && bootpath[0] != '\0') { 91 int aliases = OF_finddevice("/aliases"); 92 char tmpbuf[100]; 93 char aliasbuf[256]; 94 if (aliases != 0) { 95 char *cp1, *cp2, *cp; 96 char saved_ch = '\0'; 97 int len; 98 cp1 = strchr(bootpath, ':'); 99 cp2 = strchr(bootpath, ','); 100 cp = cp1; 101 if (cp1 == NULL || (cp2 != NULL && cp2 < cp1)) 102 cp = cp2; 103 tmpbuf[0] = '\0'; 104 if (cp != NULL) { 105 strcpy(tmpbuf, cp); 106 saved_ch = *cp; 107 *cp = '\0'; 108 } 109 len = OF_getprop(aliases, bootpath, aliasbuf, 110 sizeof(aliasbuf)); 111 if (len > 0) { 112 if (aliasbuf[len-1] == '\0') 113 len--; 114 memcpy(bootpath, aliasbuf, len); 115 strcpy(&bootpath[len], tmpbuf); 116 } else { 117 *cp = saved_ch; 118 } 119 } 120 } 121 122 /* 123 * Strip kernel name. bootpath contains "OF-path"/"kernel". 124 * 125 * for example: 126 * /bandit@F2000000/gc@10/53c94@10000/sd@0,0/netbsd (OF-1.x) 127 * /pci/mac-io/ata-3@2000/disk@0:0/netbsd.new (OF-3.x) 128 */ 129 strcpy(cbootpath, bootpath); 130 while ((node = OF_finddevice(cbootpath)) == -1) { 131 if ((p = strrchr(cbootpath, '/')) == NULL) 132 break; 133 *p = '\0'; 134 } 135 136 printf("bootpath: %s\n", bootpath); 137 if (node == -1) { 138 /* Cannot canonicalize... use bootpath anyway. */ 139 strcpy(cbootpath, bootpath); 140 141 return; 142 } 143 144 /* 145 * cbootpath is a valid OF path. Use package-to-path to 146 * canonicalize pathname. 147 */ 148 149 /* Back up the last component for later use. */ 150 if ((p = strrchr(cbootpath, '/')) != NULL) 151 strcpy(last, p + 1); 152 else 153 last[0] = '\0'; 154 155 memset(cbootpath, 0, sizeof(cbootpath)); 156 OF_package_to_path(node, cbootpath, sizeof(cbootpath) - 1); 157 158 /* 159 * OF_1.x (at least) always returns addr == 0 for 160 * SCSI disks (i.e. "/bandit (at) .../.../sd@0,0"). 161 */ 162 lastp = strrchr(cbootpath, '/'); 163 if (lastp != NULL) { 164 lastp++; 165 if (strncmp(lastp, "sd@", 3) == 0 166 && strncmp(last, "sd@", 3) == 0) 167 strcpy(lastp, last); 168 } else { 169 lastp = cbootpath; 170 } 171 172 /* 173 * At this point, cbootpath contains like: 174 * "/pci@80000000/mac-io@10/ata-3@20000/disk" 175 * 176 * The last component may have no address... so append it. 177 */ 178 if (strchr(lastp, '@') == NULL) { 179 /* Append it. */ 180 if ((p = strrchr(last, '@')) != NULL) 181 strcat(cbootpath, p); 182 } 183 184 if ((p = strrchr(lastp, ':')) != NULL) { 185 *p++ = '\0'; 186 /* booted_partition = *p - '0'; XXX correct? */ 187 } 188 } 189 190 /* 191 * device_register is called from config_attach as each device is 192 * attached. We use it to find the NetBSD device corresponding to the 193 * known OF boot device. 194 */ 195 void 196 device_register(struct device *dev, void *aux) 197 { 198 static struct device *parent; 199 static char *bp = bootpath + 1, *cp = cbootpath; 200 unsigned long addr, addr2; 201 char *p; 202 203 /* Skip over devices not represented in the OF tree. */ 204 if (device_is_a(dev, "mainbus")) { 205 parent = dev; 206 return; 207 } 208 if (device_is_a(dev, "atapibus") || device_is_a(dev, "pci") || 209 device_is_a(dev, "scsibus") || device_is_a(dev, "atabus")) 210 return; 211 212 if (device_is_a(device_parent(dev), "pci")) { 213 struct pci_attach_args *pa = aux; 214 prop_dictionary_t dict; 215 prop_bool_t b; 216 int node; 217 char name[32]; 218 219 dict = device_properties(dev); 220 node = pcidev_to_ofdev(pa->pa_pc, pa->pa_tag); 221 222 /* enable configuration of irq 14/15 for VIA native IDE */ 223 if (device_is_a(dev, "viaide") && 224 strncmp(model_name, "Pegasos", 7) == 0) { 225 b = prop_bool_create(true); 226 KASSERT(b != NULL); 227 (void)prop_dictionary_set(dict, 228 "use-compat-native-irq", b); 229 prop_object_release(b); 230 } 231 232 if (node != 0) { 233 int pci_class = 0; 234 235 prop_dictionary_set_uint32(dict, "device_node", node); 236 237 /* see if this is going to be console */ 238 memset(name, 0, sizeof(name)); 239 OF_getprop(node, "device_type", name, sizeof(name)); 240 241 OF_getprop(node, "class-code", &pci_class, 242 sizeof pci_class); 243 pci_class = (pci_class >> 16) & 0xff; 244 245 if (strcmp(name, "display") == 0 || 246 strcmp(name, "ATY,DDParent") == 0 || 247 pci_class == PCI_CLASS_DISPLAY) { 248 /* setup display properties for fb driver */ 249 prop_dictionary_set_bool(dict, "is_console", 0); 250 copy_disp_props(dev, node, dict); 251 } 252 } 253 } 254 255 if (booted_device) 256 return; 257 258 /* 259 * Skip over devices that are really just layers of NetBSD 260 * autoconf(9) we should just skip as they do not have any 261 * OFW devices. 262 */ 263 if (device_is_a(device_parent(dev), "atapibus") || 264 device_is_a(device_parent(dev), "atabus") || 265 device_is_a(device_parent(dev), "pci") || 266 device_is_a(device_parent(dev), "scsibus")) { 267 if (device_parent(device_parent(dev)) != parent) 268 return; 269 } else { 270 if (device_parent(dev) != parent) 271 return; 272 } 273 274 /* 275 * Get the address part of the current path component. The 276 * last component of the canonical bootpath may have no 277 * address (eg, "disk"), in which case we need to get the 278 * address from the original bootpath instead. 279 */ 280 p = strchr(cp, '@'); 281 if (!p) { 282 if (bp) 283 p = strchr(bp, '@'); 284 if (!p) 285 addr = 0; 286 else 287 addr = strtoul(p + 1, &p, 16); 288 } else 289 addr = strtoul(p + 1, &p, 16); 290 291 /* if the current path has more address, grab that too */ 292 if (p && *p == ',') 293 addr2 = strtoul(p + 1, &p, 16); 294 else 295 addr2 = 0; 296 297 if (device_is_a(device_parent(dev), "mainbus")) { 298 struct confargs *ca = aux; 299 300 if (strcmp(ca->ca_name, "ofw") == 0) /* XXX */ 301 return; 302 if (addr != ca->ca_reg[0]) 303 return; 304 } else if (device_is_a(device_parent(dev), "pci")) { 305 struct pci_attach_args *pa = aux; 306 307 if (addr != pa->pa_device || 308 addr2 != pa->pa_function) 309 return; 310 } else if (device_is_a(device_parent(dev), "obio")) { 311 struct confargs *ca = aux; 312 313 if (addr != ca->ca_reg[0]) 314 return; 315 } else if (device_is_a(device_parent(dev), "scsibus") || 316 device_is_a(device_parent(dev), "atapibus")) { 317 struct scsipibus_attach_args *sa = aux; 318 319 /* periph_target is target for scsi, drive # for atapi */ 320 if (addr != sa->sa_periph->periph_target) 321 return; 322 } else if (device_is_a(device_parent(device_parent(dev)), "pciide") || 323 device_is_a(device_parent(device_parent(dev)), "viaide") || 324 device_is_a(device_parent(device_parent(dev)), "slide")) { 325 struct ata_device *adev = aux; 326 327 if (addr != adev->adev_channel || 328 addr2 != adev->adev_drv_data->drive) 329 return; 330 } else if (device_is_a(device_parent(device_parent(dev)), "wdc")) { 331 struct ata_device *adev = aux; 332 333 if (addr != adev->adev_drv_data->drive) 334 return; 335 } else 336 return; 337 338 /* If we reach this point, then dev is a match for the current 339 * path component. 340 */ 341 342 if (p && *p) { 343 parent = dev; 344 cp = p; 345 bp = strchr(bp, '/'); 346 if (bp) 347 bp++; 348 return; 349 } else { 350 booted_device = dev; 351 booted_partition = 0; /* XXX -- should be extracted from bootpath */ 352 return; 353 } 354 } 355 356 /* 357 * Setup root device. 358 * Configure swap area. 359 */ 360 void 361 cpu_rootconf(void) 362 { 363 printf("boot device: %s\n", 364 booted_device ? booted_device->dv_xname : "<unknown>"); 365 366 setroot(booted_device, booted_partition); 367 } 368 369 /* 370 * Find OF-device corresponding to the PCI device. 371 */ 372 int 373 pcidev_to_ofdev(pci_chipset_tag_t pc, pcitag_t tag) 374 { 375 int bus, dev, func; 376 u_int reg[5]; 377 int p, q; 378 int l, b, d, f; 379 380 pci_decompose_tag(pc, tag, &bus, &dev, &func); 381 382 for (q = OF_peer(0); q; q = p) { 383 l = OF_getprop(q, "assigned-addresses", reg, sizeof(reg)); 384 if (l > 4) { 385 b = (reg[0] >> 16) & 0xff; 386 d = (reg[0] >> 11) & 0x1f; 387 f = (reg[0] >> 8) & 0x07; 388 389 if (b == bus && d == dev && f == func) 390 return q; 391 } 392 if ((p = OF_child(q))) 393 continue; 394 while (q) { 395 if ((p = OF_peer(q))) 396 break; 397 q = OF_parent(q); 398 } 399 } 400 return 0; 401 } 402
Indexes created Mon Sep 29 21:09:56 GMT 2025