1 /* $NetBSD: autoconf.c,v 1.26 2023/10/17 12:07:42 bouyer Exp $ */ 2 /* NetBSD: autoconf.c,v 1.75 2003/12/30 12:33:22 pk Exp */ 3 4 /*- 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * William Jolitz. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)autoconf.c 7.1 (Berkeley) 5/9/91 36 */ 37 38 /* 39 * Setup the system to run on the current machine. 40 * 41 * Configure() is called at boot time and initializes the vba 42 * device tables and the memory controller monitoring. Available 43 * devices are determined (from possibilities mentioned in ioconf.c), 44 * and the drivers are initialized. 45 */ 46 47 #include <sys/cdefs.h> 48 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.26 2023/10/17 12:07:42 bouyer Exp $"); 49 50 #include "opt_xen.h" 51 #include "opt_multiprocessor.h" 52 #include "opt_nfs_boot.h" 53 54 #include <sys/param.h> 55 #include <sys/systm.h> 56 #include <sys/buf.h> 57 #include <sys/disklabel.h> 58 #include <sys/disk.h> 59 #include <sys/conf.h> 60 #include <sys/device.h> 61 #include <sys/vnode.h> 62 #include <sys/fcntl.h> 63 #include <sys/dkio.h> 64 #include <sys/proc.h> 65 #include <sys/kauth.h> 66 67 #ifdef NFS_BOOT_BOOTSTATIC 68 #include <net/if.h> 69 #include <net/if_ether.h> 70 #include <netinet/in.h> 71 #include <nfs/rpcv2.h> 72 #include <nfs/nfsproto.h> 73 #include <nfs/nfs.h> 74 #include <nfs/nfsmount.h> 75 #include <nfs/nfsdiskless.h> 76 #include <xen/if_xennetvar.h> 77 #endif 78 79 #include <machine/pte.h> 80 #include <machine/cpu.h> 81 #include <machine/gdt.h> 82 #include <machine/pcb.h> 83 #include <machine/bootinfo.h> 84 85 #include <x86/autoconf.h> 86 87 struct disklist *x86_alldisks; 88 int x86_ndisks; 89 int x86_found_console; 90 91 #include "bios32.h" 92 #if NBIOS32 > 0 93 #include <machine/bios32.h> 94 /* XXX */ 95 extern void platform_init(void); 96 #endif 97 98 #include "opt_pcibios.h" 99 #ifdef PCIBIOS 100 #include <dev/pci/pcireg.h> 101 #include <dev/pci/pcivar.h> 102 #include <i386/pci/pcibios.h> 103 #endif 104 105 #ifdef DEBUG_GEOM 106 #define DPRINTF(a) printf a 107 #else 108 #define DPRINTF(a) 109 #endif 110 111 /* 112 * Determine i/o configuration for a machine. 113 */ 114 void 115 cpu_configure(void) 116 { 117 struct pcb *pcb; 118 119 xen_startrtclock(); 120 121 #if defined(DOM0OPS) 122 if (xendomain_is_dom0()) { 123 #if NBIOS32 > 0 124 bios32_init(); 125 platform_init(); 126 /* identify hypervisor type from SMBIOS */ 127 identify_hypervisor(); 128 #endif /* NBIOS32 > 0 */ 129 } 130 #endif /* DOM0OPS */ 131 #ifdef PCIBIOS 132 pcibios_init(); 133 #endif 134 135 if (config_rootfound("mainbus", NULL) == NULL) 136 panic("configure: mainbus not configured"); 137 138 #ifdef INTRDEBUG 139 intr_printconfig(); 140 #endif 141 142 #if NIOAPIC > 0 143 ioapic_enable(); 144 #endif 145 /* resync cr0 after FPU configuration */ 146 pcb = lwp_getpcb(&lwp0); 147 pcb->pcb_cr0 = rcr0(); 148 #ifdef MULTIPROCESSOR 149 /* propagate this to the idle pcb's. */ 150 cpu_init_idle_lwps(); 151 #endif 152 153 spl0(); 154 } 155 156 void 157 cpu_rootconf(void) 158 { 159 cpu_bootconf(); 160 161 printf("boot device: %s\n", 162 booted_device ? device_xname(booted_device) : 163 bootspec ? bootspec : "<unknown>"); 164 rootconf(); 165 } 166 167 168 /* 169 * Attempt to find the device from which we were booted. 170 */ 171 void 172 cpu_bootconf(void) 173 { 174 xen_bootconf(); 175 } 176 #include "pci.h" 177 178 #include <dev/isa/isavar.h> 179 #if NPCI > 0 180 #include <dev/pci/pcivar.h> 181 #endif 182 183 184 #if defined(NFS_BOOT_BOOTSTATIC) && defined(DOM0OPS) 185 static int 186 dom0_bootstatic_callback(struct nfs_diskless *nd) 187 { 188 #if 0 189 struct ifnet *ifp = nd->nd_ifp; 190 #endif 191 int flags = 0; 192 union xen_cmdline_parseinfo xcp; 193 struct sockaddr_in *sin; 194 195 memset(&xcp, 0, sizeof(xcp.xcp_netinfo)); 196 xcp.xcp_netinfo.xi_ifno = 0; /* XXX first interface hardcoded */ 197 xcp.xcp_netinfo.xi_root = nd->nd_root.ndm_host; 198 xen_parse_cmdline(XEN_PARSE_NETINFO, &xcp); 199 200 if (xcp.xcp_netinfo.xi_root[0] != '\0') { 201 flags |= NFS_BOOT_HAS_SERVER; 202 if (strchr(xcp.xcp_netinfo.xi_root, ':') != NULL) 203 flags |= NFS_BOOT_HAS_ROOTPATH; 204 } 205 206 nd->nd_myip.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[0]); 207 nd->nd_gwip.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[2]); 208 nd->nd_mask.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[3]); 209 210 sin = (struct sockaddr_in *) &nd->nd_root.ndm_saddr; 211 memset((void *)sin, 0, sizeof(*sin)); 212 sin->sin_len = sizeof(*sin); 213 sin->sin_family = AF_INET; 214 sin->sin_addr.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[1]); 215 216 if (nd->nd_myip.s_addr) 217 flags |= NFS_BOOT_HAS_MYIP; 218 if (nd->nd_gwip.s_addr) 219 flags |= NFS_BOOT_HAS_GWIP; 220 if (nd->nd_mask.s_addr) 221 flags |= NFS_BOOT_HAS_MASK; 222 if (sin->sin_addr.s_addr) 223 flags |= NFS_BOOT_HAS_SERVADDR; 224 225 return flags; 226 } 227 #endif 228 229 void 230 device_register(device_t dev, void *aux) 231 { 232 device_t isaboot, pciboot; 233 device_t found = NULL; 234 235 isaboot = device_isa_register(dev, aux); 236 pciboot = device_pci_register(dev, aux); 237 238 /* 239 * Handle network interfaces here, the attachment information is 240 * not available driver independently later. 241 * For disks, there is nothing useful available at attach time. 242 */ 243 #if NXENNET_HYPERVISOR > 0 || NXENNET_XENBUS > 0 || defined(DOM0OPS) 244 if (device_class(dev) == DV_IFNET) { 245 union xen_cmdline_parseinfo xcp; 246 247 #ifdef NFS_BOOT_BOOTSTATIC 248 #ifdef DOM0OPS 249 if (xendomain_is_privileged()) { 250 nfs_bootstatic_callback = dom0_bootstatic_callback; 251 } else 252 #endif 253 #if NXENNET_HYPERVISOR > 0 || NXENNET_XENBUS > 0 254 nfs_bootstatic_callback = xennet_bootstatic_callback; 255 #endif 256 #endif 257 xen_parse_cmdline(XEN_PARSE_BOOTDEV, &xcp); 258 if (strncmp(xcp.xcp_bootdev, device_xname(dev), 259 sizeof(xcp.xcp_bootdev)) == 0) 260 { 261 found = dev; 262 } 263 } 264 #endif 265 if (found == NULL) { 266 if (isaboot != NULL) 267 found = isaboot; 268 else if (pciboot != NULL) 269 found = pciboot; 270 } 271 272 if (found) { 273 if (booted_device) { 274 /* XXX should be a "panic()" */ 275 printf("warning: double match for boot device (%s, %s)\n", 276 device_xname(booted_device), device_xname(dev)); 277 return; 278 } 279 booted_device = found; 280 booted_method = "device/register"; 281 } 282 } 283
Indexes created Fri Oct 03 02:09:57 GMT 2025