autoconf.c revision 1.15.2.2
1 /* $NetBSD: autoconf.c,v 1.15.2.2 2014/08/20 00:03:30 tls 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 1.15.2.2 2014/08/20 00:03:30 tls Exp $"); 49 50 #include "opt_xen.h" 51 #include "opt_compat_oldboot.h" 52 #include "opt_multiprocessor.h" 53 #include "opt_nfs_boot.h" 54 55 #include <sys/param.h> 56 #include <sys/systm.h> 57 #include <sys/buf.h> 58 #include <sys/disklabel.h> 59 #include <sys/disk.h> 60 #include <sys/conf.h> 61 #ifdef COMPAT_OLDBOOT 62 #include <sys/reboot.h> 63 #endif 64 #include <sys/device.h> 65 #include <sys/vnode.h> 66 #include <sys/fcntl.h> 67 #include <sys/dkio.h> 68 #include <sys/proc.h> 69 #include <sys/kauth.h> 70 71 #ifdef NFS_BOOT_BOOTSTATIC 72 #include <net/if.h> 73 #include <net/if_ether.h> 74 #include <netinet/in.h> 75 #include <nfs/rpcv2.h> 76 #include <nfs/nfsproto.h> 77 #include <nfs/nfs.h> 78 #include <nfs/nfsmount.h> 79 #include <nfs/nfsdiskless.h> 80 #include <xen/if_xennetvar.h> 81 #endif 82 83 #include <machine/pte.h> 84 #include <machine/cpu.h> 85 #include <machine/gdt.h> 86 #include <machine/pcb.h> 87 #include <machine/bootinfo.h> 88 89 static int is_valid_disk(device_t); 90 91 struct disklist *x86_alldisks; 92 int x86_ndisks; 93 94 #include "bios32.h" 95 #if NBIOS32 > 0 96 #include <machine/bios32.h> 97 #endif 98 99 #include "opt_pcibios.h" 100 #ifdef PCIBIOS 101 #include <dev/pci/pcireg.h> 102 #include <dev/pci/pcivar.h> 103 #include <i386/pci/pcibios.h> 104 #endif 105 106 /* 107 * Determine i/o configuration for a machine. 108 */ 109 void 110 cpu_configure(void) 111 { 112 struct pcb *pcb; 113 114 startrtclock(); 115 116 #if NBIOS32 > 0 && defined(DOM0OPS) 117 if (xendomain_is_dom0()) 118 bios32_init(); 119 #endif /* NBIOS32 > 0 && DOM0OPS */ 120 #ifdef PCIBIOS 121 pcibios_init(); 122 #endif 123 124 if (config_rootfound("mainbus", NULL) == NULL) 125 panic("configure: mainbus not configured"); 126 127 #ifdef INTRDEBUG 128 intr_printconfig(); 129 #endif 130 131 /* resync cr0 after FPU configuration */ 132 pcb = lwp_getpcb(&lwp0); 133 pcb->pcb_cr0 = rcr0(); 134 #ifdef MULTIPROCESSOR 135 /* propagate this to the idle pcb's. */ 136 cpu_init_idle_lwps(); 137 #endif 138 139 spl0(); 140 } 141 142 void 143 cpu_rootconf(void) 144 { 145 cpu_bootconf(); 146 147 printf("boot device: %s\n", 148 booted_device ? device_xname(booted_device) : "<unknown>"); 149 rootconf(); 150 } 151 152 153 /* 154 * Attempt to find the device from which we were booted. 155 */ 156 void 157 cpu_bootconf(void) 158 { 159 device_t dv; 160 deviter_t di; 161 union xen_cmdline_parseinfo xcp; 162 163 if (booted_device) 164 return; 165 166 xen_parse_cmdline(XEN_PARSE_BOOTDEV, &xcp); 167 168 for (dv = deviter_first(&di, DEVITER_F_ROOT_FIRST); 169 dv != NULL; 170 dv = deviter_next(&di)) { 171 bool is_ifnet, is_disk; 172 const char *devname; 173 174 is_ifnet = (device_class(dv) == DV_IFNET); 175 is_disk = is_valid_disk(dv); 176 devname = device_xname(dv); 177 178 if (!is_ifnet && !is_disk) 179 continue; 180 181 if (is_disk && xcp.xcp_bootdev[0] == 0) { 182 booted_device = dv; 183 break; 184 } 185 186 if (strncmp(xcp.xcp_bootdev, devname, strlen(devname))) 187 continue; 188 189 if (is_disk && strlen(xcp.xcp_bootdev) > strlen(devname)) { 190 booted_partition = toupper( 191 xcp.xcp_bootdev[strlen(devname)]) - 'A'; 192 } 193 194 booted_device = dv; 195 break; 196 } 197 deviter_release(&di); 198 } 199 200 #include "pci.h" 201 202 #include <dev/isa/isavar.h> 203 #if NPCI > 0 204 #include <dev/pci/pcivar.h> 205 #endif 206 207 208 #if defined(NFS_BOOT_BOOTSTATIC) && defined(DOM0OPS) 209 static int 210 dom0_bootstatic_callback(struct nfs_diskless *nd) 211 { 212 #if 0 213 struct ifnet *ifp = nd->nd_ifp; 214 #endif 215 int flags = 0; 216 union xen_cmdline_parseinfo xcp; 217 struct sockaddr_in *sin; 218 219 memset(&xcp, 0, sizeof(xcp.xcp_netinfo)); 220 xcp.xcp_netinfo.xi_ifno = 0; /* XXX first interface hardcoded */ 221 xcp.xcp_netinfo.xi_root = nd->nd_root.ndm_host; 222 xen_parse_cmdline(XEN_PARSE_NETINFO, &xcp); 223 224 if (xcp.xcp_netinfo.xi_root[0] != '\0') { 225 flags |= NFS_BOOT_HAS_SERVER; 226 if (strchr(xcp.xcp_netinfo.xi_root, ':') != NULL) 227 flags |= NFS_BOOT_HAS_ROOTPATH; 228 } 229 230 nd->nd_myip.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[0]); 231 nd->nd_gwip.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[2]); 232 nd->nd_mask.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[3]); 233 234 sin = (struct sockaddr_in *) &nd->nd_root.ndm_saddr; 235 memset((void *)sin, 0, sizeof(*sin)); 236 sin->sin_len = sizeof(*sin); 237 sin->sin_family = AF_INET; 238 sin->sin_addr.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[1]); 239 240 if (nd->nd_myip.s_addr) 241 flags |= NFS_BOOT_HAS_MYIP; 242 if (nd->nd_gwip.s_addr) 243 flags |= NFS_BOOT_HAS_GWIP; 244 if (nd->nd_mask.s_addr) 245 flags |= NFS_BOOT_HAS_MASK; 246 if (sin->sin_addr.s_addr) 247 flags |= NFS_BOOT_HAS_SERVADDR; 248 249 return flags; 250 } 251 #endif 252 253 void 254 device_register(device_t dev, void *aux) 255 { 256 /* 257 * Handle network interfaces here, the attachment information is 258 * not available driver independently later. 259 * For disks, there is nothing useful available at attach time. 260 */ 261 #if NXENNET_HYPERVISOR > 0 || NXENNET_XENBUS > 0 || defined(DOM0OPS) 262 if (device_class(dev) == DV_IFNET) { 263 union xen_cmdline_parseinfo xcp; 264 265 #ifdef NFS_BOOT_BOOTSTATIC 266 #ifdef DOM0OPS 267 if (xendomain_is_privileged()) { 268 nfs_bootstatic_callback = dom0_bootstatic_callback; 269 } else 270 #endif 271 #if NXENNET_HYPERVISOR > 0 || NXENNET_XENBUS > 0 272 nfs_bootstatic_callback = xennet_bootstatic_callback; 273 #endif 274 #endif 275 xen_parse_cmdline(XEN_PARSE_BOOTDEV, &xcp); 276 if (strncmp(xcp.xcp_bootdev, device_xname(dev), 277 sizeof(xcp.xcp_bootdev)) == 0) 278 { 279 goto found; 280 } 281 } 282 #endif 283 if (device_class(dev) == DV_IFNET) { 284 struct btinfo_netif *bin = lookup_bootinfo(BTINFO_NETIF); 285 if (bin == NULL) 286 return; 287 288 /* 289 * We don't check the driver name against the device name 290 * passed by the boot ROM. The ROM should stay usable 291 * if the driver gets obsoleted. 292 * The physical attachment information (checked below) 293 * must be sufficient to identify the device. 294 */ 295 296 if (bin->bus == BI_BUS_ISA && 297 device_is_a(device_parent(dev), "isa")) { 298 struct isa_attach_args *iaa = aux; 299 300 /* compare IO base address */ 301 /* XXXJRT what about multiple I/O addrs? */ 302 if (iaa->ia_nio > 0 && 303 bin->addr.iobase == iaa->ia_io[0].ir_addr) 304 goto found; 305 } 306 #if NPCI > 0 307 if (bin->bus == BI_BUS_PCI && 308 device_is_a(device_parent(dev), "pci")) { 309 struct pci_attach_args *paa = aux; 310 int b, d, f; 311 312 /* 313 * Calculate BIOS representation of: 314 * 315 * <bus,device,function> 316 * 317 * and compare. 318 */ 319 pci_decompose_tag(paa->pa_pc, paa->pa_tag, &b, &d, &f); 320 if (bin->addr.tag == ((b << 8) | (d << 3) | f)) 321 goto found; 322 } 323 #endif 324 } 325 return; 326 327 found: 328 if (booted_device) { 329 /* XXX should be a "panic()" */ 330 printf("warning: double match for boot device (%s, %s)\n", 331 device_xname(booted_device), device_xname(dev)); 332 return; 333 } 334 booted_device = dev; 335 } 336 337 static int 338 is_valid_disk(device_t dv) 339 { 340 341 if (device_class(dv) != DV_DISK) 342 return (0); 343 344 return (device_is_a(dv, "dk") || 345 device_is_a(dv, "sd") || 346 device_is_a(dv, "wd") || 347 device_is_a(dv, "ld") || 348 device_is_a(dv, "ed") || 349 device_is_a(dv, "xbd")); 350 } 351
Indexes created Fri Oct 03 02:09:57 GMT 2025