/* $NetBSD: ofw_autoconf.c,v 1.7.10.1 2009/05/04 08:11:44 yamt Exp $ */ /* * Copyright (C) 1995, 1996 Wolfgang Solfrank. * Copyright (C) 1995, 1996 TooLs GmbH. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by TooLs GmbH. * 4. The name of TooLs GmbH may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: ofw_autoconf.c,v 1.7.10.1 2009/05/04 08:11:44 yamt Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include extern char bootpath[256]; char cbootpath[256]; int console_node = 0, console_instance = 0; static void canonicalize_bootpath(void); /* * Determine device configuration for a machine. */ void cpu_configure(void) { init_interrupt(); canonicalize_bootpath(); if (config_rootfound("mainbus", NULL) == NULL) panic("configure: mainbus not configured"); genppc_cpu_configure(); } static void canonicalize_bootpath(void) { int node; char *p, *lastp; char last[32]; /* * If the bootpath doesn't start with a / then it isn't * an OFW path and probably is an alias, so look up the alias * and regenerate the full bootpath so device_register will work. */ if (bootpath[0] != '/' && bootpath[0] != '\0') { int aliases = OF_finddevice("/aliases"); char tmpbuf[100]; char aliasbuf[256]; if (aliases != 0) { char *cp1, *cp2, *cp; char saved_ch = '\0'; int len; cp1 = strchr(bootpath, ':'); cp2 = strchr(bootpath, ','); cp = cp1; if (cp1 == NULL || (cp2 != NULL && cp2 < cp1)) cp = cp2; tmpbuf[0] = '\0'; if (cp != NULL) { strcpy(tmpbuf, cp); saved_ch = *cp; *cp = '\0'; } len = OF_getprop(aliases, bootpath, aliasbuf, sizeof(aliasbuf)); if (len > 0) { if (aliasbuf[len-1] == '\0') len--; memcpy(bootpath, aliasbuf, len); strcpy(&bootpath[len], tmpbuf); } else { *cp = saved_ch; } } } /* * Strip kernel name. bootpath contains "OF-path"/"kernel". * * for example: * /bandit@F2000000/gc@10/53c94@10000/sd@0,0/netbsd (OF-1.x) * /pci/mac-io/ata-3@2000/disk@0:0/netbsd.new (OF-3.x) */ strcpy(cbootpath, bootpath); while ((node = OF_finddevice(cbootpath)) == -1) { if ((p = strrchr(cbootpath, '/')) == NULL) break; *p = '\0'; } printf("bootpath: %s\n", bootpath); if (node == -1) { /* Cannot canonicalize... use bootpath anyway. */ strcpy(cbootpath, bootpath); return; } /* * cbootpath is a valid OF path. Use package-to-path to * canonicalize pathname. */ /* Back up the last component for later use. */ if ((p = strrchr(cbootpath, '/')) != NULL) strcpy(last, p + 1); else last[0] = '\0'; memset(cbootpath, 0, sizeof(cbootpath)); OF_package_to_path(node, cbootpath, sizeof(cbootpath) - 1); /* * OF_1.x (at least) always returns addr == 0 for * SCSI disks (i.e. "/bandit@.../.../sd@0,0"). */ lastp = strrchr(cbootpath, '/'); if (lastp != NULL) { lastp++; if (strncmp(lastp, "sd@", 3) == 0 && strncmp(last, "sd@", 3) == 0) strcpy(lastp, last); } else { lastp = cbootpath; } /* * At this point, cbootpath contains like: * "/pci@80000000/mac-io@10/ata-3@20000/disk" * * The last component may have no address... so append it. */ if (strchr(lastp, '@') == NULL) { /* Append it. */ if ((p = strrchr(last, '@')) != NULL) strcat(cbootpath, p); } if ((p = strrchr(lastp, ':')) != NULL) { *p++ = '\0'; /* booted_partition = *p - '0'; XXX correct? */ } } /* * device_register is called from config_attach as each device is * attached. We use it to find the NetBSD device corresponding to the * known OF boot device. */ void device_register(struct device *dev, void *aux) { static struct device *parent; static char *bp = bootpath + 1, *cp = cbootpath; unsigned long addr, addr2; char *p; /* Skip over devices not represented in the OF tree. */ if (device_is_a(dev, "mainbus")) { parent = dev; return; } if (device_is_a(dev, "atapibus") || device_is_a(dev, "pci") || device_is_a(dev, "scsibus") || device_is_a(dev, "atabus")) return; if (device_is_a(device_parent(dev), "pci")) { struct pci_attach_args *pa = aux; prop_dictionary_t dict; prop_bool_t b; int node; char name[32]; dict = device_properties(dev); node = pcidev_to_ofdev(pa->pa_pc, pa->pa_tag); /* enable configuration of irq 14/15 for VIA native IDE */ if (device_is_a(dev, "viaide") && strncmp(model_name, "Pegasos", 7) == 0) { b = prop_bool_create(true); KASSERT(b != NULL); (void)prop_dictionary_set(dict, "use-compat-native-irq", b); prop_object_release(b); } if (node != 0) { int pci_class = 0; prop_dictionary_set_uint32(dict, "device_node", node); /* see if this is going to be console */ memset(name, 0, sizeof(name)); OF_getprop(node, "device_type", name, sizeof(name)); OF_getprop(node, "class-code", &pci_class, sizeof pci_class); pci_class = (pci_class >> 16) & 0xff; if (strcmp(name, "display") == 0 || strcmp(name, "ATY,DDParent") == 0 || pci_class == PCI_CLASS_DISPLAY) { /* setup display properties for fb driver */ prop_dictionary_set_bool(dict, "is_console", 0); copy_disp_props(dev, node, dict); } } } if (booted_device) return; /* * Skip over devices that are really just layers of NetBSD * autoconf(9) we should just skip as they do not have any * OFW devices. */ if (device_is_a(device_parent(dev), "atapibus") || device_is_a(device_parent(dev), "atabus") || device_is_a(device_parent(dev), "pci") || device_is_a(device_parent(dev), "scsibus")) { if (device_parent(device_parent(dev)) != parent) return; } else { if (device_parent(dev) != parent) return; } /* * Get the address part of the current path component. The * last component of the canonical bootpath may have no * address (eg, "disk"), in which case we need to get the * address from the original bootpath instead. */ p = strchr(cp, '@'); if (!p) { if (bp) p = strchr(bp, '@'); if (!p) addr = 0; else addr = strtoul(p + 1, &p, 16); } else addr = strtoul(p + 1, &p, 16); /* if the current path has more address, grab that too */ if (p && *p == ',') addr2 = strtoul(p + 1, &p, 16); else addr2 = 0; if (device_is_a(device_parent(dev), "mainbus")) { struct confargs *ca = aux; if (strcmp(ca->ca_name, "ofw") == 0) /* XXX */ return; if (addr != ca->ca_reg[0]) return; } else if (device_is_a(device_parent(dev), "pci")) { struct pci_attach_args *pa = aux; if (addr != pa->pa_device || addr2 != pa->pa_function) return; } else if (device_is_a(device_parent(dev), "obio")) { struct confargs *ca = aux; if (addr != ca->ca_reg[0]) return; } else if (device_is_a(device_parent(dev), "scsibus") || device_is_a(device_parent(dev), "atapibus")) { struct scsipibus_attach_args *sa = aux; /* periph_target is target for scsi, drive # for atapi */ if (addr != sa->sa_periph->periph_target) return; } else if (device_is_a(device_parent(device_parent(dev)), "pciide") || device_is_a(device_parent(device_parent(dev)), "viaide") || device_is_a(device_parent(device_parent(dev)), "slide")) { struct ata_device *adev = aux; if (addr != adev->adev_channel || addr2 != adev->adev_drv_data->drive) return; } else if (device_is_a(device_parent(device_parent(dev)), "wdc")) { struct ata_device *adev = aux; if (addr != adev->adev_drv_data->drive) return; } else return; /* If we reach this point, then dev is a match for the current * path component. */ if (p && *p) { parent = dev; cp = p; bp = strchr(bp, '/'); if (bp) bp++; return; } else { booted_device = dev; booted_partition = 0; /* XXX -- should be extracted from bootpath */ return; } } /* * Setup root device. * Configure swap area. */ void cpu_rootconf(void) { printf("boot device: %s\n", booted_device ? booted_device->dv_xname : ""); setroot(booted_device, booted_partition); } /* * Find OF-device corresponding to the PCI device. */ int pcidev_to_ofdev(pci_chipset_tag_t pc, pcitag_t tag) { int bus, dev, func; u_int reg[5]; int p, q; int l, b, d, f; pci_decompose_tag(pc, tag, &bus, &dev, &func); for (q = OF_peer(0); q; q = p) { l = OF_getprop(q, "assigned-addresses", reg, sizeof(reg)); if (l > 4) { b = (reg[0] >> 16) & 0xff; d = (reg[0] >> 11) & 0x1f; f = (reg[0] >> 8) & 0x07; if (b == bus && d == dev && f == func) return q; } if ((p = OF_child(q))) continue; while (q) { if ((p = OF_peer(q))) break; q = OF_parent(q); } } return 0; }