/* $NetBSD: autoconf.c,v 1.29 2023/12/20 06:36:02 thorpej Exp $ */ /*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * William Jolitz. * * 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. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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. * * @(#)autoconf.c 7.1 (Berkeley) 5/9/91 */ /* * Setup the system to run on the current machine. * * Configure() is called at boot time and initializes the vba * device tables and the memory controller monitoring. Available * devices are determined (from possibilities mentioned in ioconf.c), * and the drivers are initialized. */ #include __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.29 2023/12/20 06:36:02 thorpej Exp $"); #include #include #include #include #include #include #include #include #include #include "pci.h" #if NPCI > 0 #include #include #endif #include #include #include #include #include #include #include void genppc_cpu_configure(void); static void findroot(void); static int bus, target, lun, drive; static const char *name = NULL; /* * Determine i/o configuration for a machine. */ void cpu_configure(void) { findroot(); if (config_rootfound("mainbus", NULL) == NULL) panic("configure: mainbus not configured"); genppc_cpu_configure(); } void cpu_rootconf(void) { aprint_normal("boot device: %s\n", booted_device ? device_xname(booted_device) : ""); rootconf(); } /* * Attempt to find the device from which we were booted. * If we can do so, and not instructed not to do so, * change rootdev to correspond to the load device. */ static void findroot(void) { struct btinfo_rootdevice *rdev; int part; char *p; target = lun = drive = -1; rdev = (struct btinfo_rootdevice *)lookup_bootinfo(BTINFO_ROOTDEVICE); if (rdev == NULL) return; p = rdev->rootdevice; if (strncmp(p, "/dev/disk/", 10) != 0) /* unknown device... */ return; p += 10; if (strncmp(p, "scsi/", 5) == 0) { name = "sd"; p += 5; if (!isdigit(*(p + 0)) || !isdigit(*(p + 1)) || !isdigit(*(p + 2)) || *(p + 3) != '/') return; bus = (*p++) - '0'; target = (*p++) - '0'; lun = (*p++) - '0'; } else if (strncmp(p, "ide/", 4) == 0) { name = "wd"; p += 4; bus = (*p++) - '0'; if (*p++ != '/') return; if (strncmp(p, "master/", 7) == 0) { drive = 0; p += 8; } else if (strncmp(p, "slave/", 6) == 0) { drive = 1; p += 7; } else return; } else if (strcmp(p, "floppy") == 0) return; else /* unknown disk... */ return; if (*(p + 0) != '0' || *(p + 1) != '_' || !isdigit(*(p + 2))) return; p += 2; part = (*p++) - '0'; if (*p != '\0') return; booted_partition = part; } void device_register(device_t dev, void *aux) { device_t bdev, cdev; #if NPCI > 0 if (device_is_a(dev, "genfb") && device_is_a(device_parent(dev), "pci")) { prop_dictionary_t dict = device_properties(dev); struct pci_attach_args *pa = aux; pcireg_t bar0; uint32_t fbaddr; bar0 = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_START); fbaddr = PCI_MAPREG_MEM_ADDR(bar0); prop_dictionary_set_bool(dict, "is_console", 1); prop_dictionary_set_uint32(dict, "width", 640); prop_dictionary_set_uint32(dict, "height", 480); prop_dictionary_set_uint32(dict, "depth", 8); prop_dictionary_set_uint32(dict, "address", fbaddr); } if (device_is_a(dev, "siop") && device_is_a(device_parent(dev), "pci")) { prop_dictionary_t dict = device_properties(dev); struct pci_attach_args *pa = aux; int pbus, device; pci_decompose_tag(pa->pa_pc, pa->pa_tag, &pbus, &device, NULL); if (pbus == 0 && device == 12) /* Internal SCSI uses PCI clock as SCSI clock */ prop_dictionary_set_bool(dict, "use_pciclock", 1); } #endif if (booted_device != NULL) return; /* * Check boot device. * It is sd/wd connected by the onboard controller to be supported. */ if (device_is_a(dev, "sd") && strcmp(name, "sd") == 0) { struct scsipibus_attach_args *sa = aux; bdev = device_parent(dev); if (!device_is_a(bdev, "scsibus")) return; cdev = device_parent(bdev); if (!device_is_a(cdev, "siop")) return; if (sa->sa_periph->periph_target == target && sa->sa_periph->periph_lun == lun) booted_device = dev; } else if (device_is_a(dev, "wd") && strcmp(name, "wd") == 0) { struct ata_device *adev = aux; bdev = device_parent(dev); if (!device_is_a(bdev, "atabus")) return; cdev = device_parent(bdev); if (!device_is_a(cdev, "wdc")) return; if (!device_is_a(device_parent(cdev), "isa")) return; if (adev->adev_drv_data->drive == drive) booted_device = dev; } }