/* $NetBSD: autoconf.c,v 1.3 2008/04/06 07:24:19 cegger Exp $ */ /* NetBSD: autoconf.c,v 1.75 2003/12/30 12:33:22 pk 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 1.3 2008/04/06 07:24:19 cegger Exp $"); #include "opt_xen.h" #include "opt_compat_oldboot.h" #include "opt_multiprocessor.h" #include "opt_nfs_boot.h" #include "xennet_hypervisor.h" #include "xennet_xenbus.h" #include #include #include #include #include #include #ifdef COMPAT_OLDBOOT #include #endif #include #include #include #include #include #include #include #include #ifdef NFS_BOOT_BOOTSTATIC #include #include #include #include #include #include #include #include #include #endif #include #include #include #include #include static void findroot(void); static int is_valid_disk(struct device *); static void handle_wedges(struct device *, int); struct disklist *x86_alldisks; int x86_ndisks; #include "bios32.h" #if NBIOS32 > 0 #include #endif #include "opt_pcibios.h" #ifdef PCIBIOS #include #include #include #endif #include "opt_kvm86.h" #ifdef KVM86 #include #endif /* * Determine i/o configuration for a machine. */ void cpu_configure(void) { startrtclock(); #if NBIOS32 > 0 && defined(DOM0OPS) #ifdef XEN3 if (xen_start_info.flags & SIF_INITDOMAIN) #endif bios32_init(); #endif /* NBIOS32 > 0 && DOM0OPS */ #ifdef PCIBIOS pcibios_init(); #endif #ifdef KVM86 kvm86_init(); #endif if (config_rootfound("mainbus", NULL) == NULL) panic("configure: mainbus not configured"); #ifdef INTRDEBUG intr_printconfig(); #endif /* resync cr0 after FPU configuration */ lwp0.l_addr->u_pcb.pcb_cr0 = rcr0(); #ifdef MULTIPROCESSOR /* propagate this to the idle pcb's. */ cpu_init_idle_lwps(); #endif spl0(); } void cpu_rootconf(void) { findroot(); if (booted_wedge) { KASSERT(booted_device != NULL); printf("boot device: %s (%s)\n", device_xname(booted_wedge), device_xname(booted_device)); setroot(booted_wedge, 0); } else { printf("boot device: %s\n", booted_device ? device_xname(booted_device) : ""); setroot(booted_device, booted_partition); } } /* * 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. */ void findroot(void) { struct device *dv; union xen_cmdline_parseinfo xcp; if (booted_device) return; xen_parse_cmdline(XEN_PARSE_BOOTDEV, &xcp); TAILQ_FOREACH(dv, &alldevs, dv_list) { if (is_valid_disk(dv) == 0) continue; if (xcp.xcp_bootdev[0] == 0) { handle_wedges(dv, 0); break; } if (strncmp(xcp.xcp_bootdev, device_xname(dv), strlen(device_xname(dv)))) continue; if (strlen(xcp.xcp_bootdev) > strlen(device_xname(dv))) { booted_partition = toupper( xcp.xcp_bootdev[strlen(device_xname(dv))]) - 'A'; } booted_device = dv; break; } } #include "pci.h" #include #if NPCI > 0 #include #endif #if defined(NFS_BOOT_BOOTSTATIC) && defined(DOM0OPS) static int dom0_bootstatic_callback(struct nfs_diskless *nd) { #if 0 struct ifnet *ifp = nd->nd_ifp; #endif union xen_cmdline_parseinfo xcp; struct sockaddr_in *sin; memset(&xcp, 0, sizeof(xcp.xcp_netinfo)); xcp.xcp_netinfo.xi_ifno = 0; /* XXX first interface hardcoded */ xcp.xcp_netinfo.xi_root = nd->nd_root.ndm_host; xen_parse_cmdline(XEN_PARSE_NETINFO, &xcp); nd->nd_myip.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[0]); nd->nd_gwip.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[2]); nd->nd_mask.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[3]); sin = (struct sockaddr_in *) &nd->nd_root.ndm_saddr; memset((void *)sin, 0, sizeof(*sin)); sin->sin_len = sizeof(*sin); sin->sin_family = AF_INET; sin->sin_addr.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[1]); if (nd->nd_myip.s_addr == 0) return NFS_BOOTSTATIC_NOSTATIC; else return (NFS_BOOTSTATIC_HAS_MYIP|NFS_BOOTSTATIC_HAS_GWIP| NFS_BOOTSTATIC_HAS_MASK|NFS_BOOTSTATIC_HAS_SERVADDR| NFS_BOOTSTATIC_HAS_SERVER); } #endif void device_register(struct device *dev, void *aux) { /* * Handle network interfaces here, the attachment information is * not available driver independently later. * For disks, there is nothing useful available at attach time. */ #if NXENNET_HYPERVISOR > 0 || NXENNET_XENBUS > 0 || defined(DOM0OPS) if (device_class(dev) == DV_IFNET) { union xen_cmdline_parseinfo xcp; xen_parse_cmdline(XEN_PARSE_BOOTDEV, &xcp); if (strncmp(xcp.xcp_bootdev, device_xname(dev), sizeof(xcp.xcp_bootdev)) == 0) { #ifdef NFS_BOOT_BOOTSTATIC #ifdef DOM0OPS if (xen_start_info.flags & SIF_PRIVILEGED) { nfs_bootstatic_callback = dom0_bootstatic_callback; } else #endif #if NXENNET_HYPERVISOR > 0 || NXENNET_XENBUS > 0 nfs_bootstatic_callback = xennet_bootstatic_callback; #endif #endif goto found; } } #endif if (device_class(dev) == DV_IFNET) { struct btinfo_netif *bin = lookup_bootinfo(BTINFO_NETIF); if (bin == NULL) return; /* * We don't check the driver name against the device name * passed by the boot ROM. The ROM should stay usable * if the driver gets obsoleted. * The physical attachment information (checked below) * must be sufficient to identify the device. */ if (bin->bus == BI_BUS_ISA && device_is_a(device_parent(dev), "isa")) { struct isa_attach_args *iaa = aux; /* compare IO base address */ /* XXXJRT what about multiple I/O addrs? */ if (iaa->ia_nio > 0 && bin->addr.iobase == iaa->ia_io[0].ir_addr) goto found; } #if NPCI > 0 if (bin->bus == BI_BUS_PCI && device_is_a(device_parent(dev), "pci")) { struct pci_attach_args *paa = aux; int b, d, f; /* * Calculate BIOS representation of: * * * * and compare. */ pci_decompose_tag(paa->pa_pc, paa->pa_tag, &b, &d, &f); if (bin->addr.tag == ((b << 8) | (d << 3) | f)) goto found; } #endif } return; found: if (booted_device) { /* XXX should be a "panic()" */ printf("warning: double match for boot device (%s, %s)\n", device_xname(booted_device), device_xname(dev)); return; } booted_device = dev; } static void handle_wedges(struct device *dv, int par) { if (config_handle_wedges(dv, par) == 0) return; booted_device = dv; booted_partition = par; } static int is_valid_disk(struct device *dv) { if (device_class(dv) != DV_DISK) return (0); return (device_is_a(dv, "dk") || device_is_a(dv, "sd") || device_is_a(dv, "wd") || device_is_a(dv, "ld") || device_is_a(dv, "ed") || device_is_a(dv, "xbd")); }