autoconf.c revision 1.18.2.1
1 /* $NetBSD: autoconf.c,v 1.18.2.1 2018/10/13 17:16:12 martin 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 1.18.2.1 2018/10/13 17:16:12 martin 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 /* XXX */ 98 extern void platform_init(void); 99 #endif 100 101 #include "opt_pcibios.h" 102 #ifdef PCIBIOS 103 #include <dev/pci/pcireg.h> 104 #include <dev/pci/pcivar.h> 105 #include <i386/pci/pcibios.h> 106 #endif 107 108 /* 109 * Determine i/o configuration for a machine. 110 */ 111 void 112 cpu_configure(void) 113 { 114 struct pcb *pcb; 115 116 startrtclock(); 117 118 #if defined(DOM0OPS) 119 if (xendomain_is_dom0()) { 120 #if NBIOS32 > 0 121 bios32_init(); 122 platform_init(); 123 /* identify hypervisor type from SMBIOS */ 124 identify_hypervisor(); 125 #endif /* NBIOS32 > 0 */ 126 } else 127 #endif /* DOM0OPS */ 128 vm_guest = VM_GUEST_XEN; 129 #ifdef PCIBIOS 130 pcibios_init(); 131 #endif 132 133 if (config_rootfound("mainbus", NULL) == NULL) 134 panic("configure: mainbus not configured"); 135 136 #ifdef INTRDEBUG 137 intr_printconfig(); 138 #endif 139 140 /* resync cr0 after FPU configuration */ 141 pcb = lwp_getpcb(&lwp0); 142 pcb->pcb_cr0 = rcr0(); 143 #ifdef MULTIPROCESSOR 144 /* propagate this to the idle pcb's. */ 145 cpu_init_idle_lwps(); 146 #endif 147 148 spl0(); 149 } 150 151 void 152 cpu_rootconf(void) 153 { 154 cpu_bootconf(); 155 156 printf("boot device: %s\n", 157 booted_device ? device_xname(booted_device) : 158 bootspec ? bootspec : "<unknown>"); 159 rootconf(); 160 } 161 162 163 /* 164 * Attempt to find the device from which we were booted. 165 */ 166 void 167 cpu_bootconf(void) 168 { 169 device_t dv; 170 deviter_t di; 171 union xen_cmdline_parseinfo xcp; 172 static char bootspecbuf[sizeof(xcp.xcp_bootdev)]; 173 174 if (booted_device) 175 return; 176 177 xen_parse_cmdline(XEN_PARSE_BOOTDEV, &xcp); 178 179 for (dv = deviter_first(&di, DEVITER_F_ROOT_FIRST); 180 dv != NULL; 181 dv = deviter_next(&di)) { 182 bool is_ifnet, is_disk; 183 const char *devname; 184 185 is_ifnet = (device_class(dv) == DV_IFNET); 186 is_disk = is_valid_disk(dv); 187 devname = device_xname(dv); 188 189 if (!is_ifnet && !is_disk) 190 continue; 191 192 if (is_disk && xcp.xcp_bootdev[0] == 0) { 193 booted_device = dv; 194 break; 195 } 196 197 if (strncmp(xcp.xcp_bootdev, devname, strlen(devname))) 198 continue; 199 200 if (is_disk && strlen(xcp.xcp_bootdev) > strlen(devname)) { 201 booted_partition = toupper( 202 xcp.xcp_bootdev[strlen(devname)]) - 'A'; 203 } 204 205 booted_device = dv; 206 break; 207 } 208 deviter_release(&di); 209 210 if (booted_device) 211 return; 212 213 /* 214 * not a boot device name, pass through to MI code 215 */ 216 if (xcp.xcp_bootdev[0] != '\0') { 217 strlcpy(bootspecbuf, xcp.xcp_bootdev, sizeof(bootspecbuf)); 218 bootspec = bootspecbuf; 219 return; 220 } 221 } 222 223 #include "pci.h" 224 225 #include <dev/isa/isavar.h> 226 #if NPCI > 0 227 #include <dev/pci/pcivar.h> 228 #endif 229 230 231 #if defined(NFS_BOOT_BOOTSTATIC) && defined(DOM0OPS) 232 static int 233 dom0_bootstatic_callback(struct nfs_diskless *nd) 234 { 235 #if 0 236 struct ifnet *ifp = nd->nd_ifp; 237 #endif 238 int flags = 0; 239 union xen_cmdline_parseinfo xcp; 240 struct sockaddr_in *sin; 241 242 memset(&xcp, 0, sizeof(xcp.xcp_netinfo)); 243 xcp.xcp_netinfo.xi_ifno = 0; /* XXX first interface hardcoded */ 244 xcp.xcp_netinfo.xi_root = nd->nd_root.ndm_host; 245 xen_parse_cmdline(XEN_PARSE_NETINFO, &xcp); 246 247 if (xcp.xcp_netinfo.xi_root[0] != '\0') { 248 flags |= NFS_BOOT_HAS_SERVER; 249 if (strchr(xcp.xcp_netinfo.xi_root, ':') != NULL) 250 flags |= NFS_BOOT_HAS_ROOTPATH; 251 } 252 253 nd->nd_myip.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[0]); 254 nd->nd_gwip.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[2]); 255 nd->nd_mask.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[3]); 256 257 sin = (struct sockaddr_in *) &nd->nd_root.ndm_saddr; 258 memset((void *)sin, 0, sizeof(*sin)); 259 sin->sin_len = sizeof(*sin); 260 sin->sin_family = AF_INET; 261 sin->sin_addr.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[1]); 262 263 if (nd->nd_myip.s_addr) 264 flags |= NFS_BOOT_HAS_MYIP; 265 if (nd->nd_gwip.s_addr) 266 flags |= NFS_BOOT_HAS_GWIP; 267 if (nd->nd_mask.s_addr) 268 flags |= NFS_BOOT_HAS_MASK; 269 if (sin->sin_addr.s_addr) 270 flags |= NFS_BOOT_HAS_SERVADDR; 271 272 return flags; 273 } 274 #endif 275 276 void 277 device_register(device_t dev, void *aux) 278 { 279 /* 280 * Handle network interfaces here, the attachment information is 281 * not available driver independently later. 282 * For disks, there is nothing useful available at attach time. 283 */ 284 #if NXENNET_HYPERVISOR > 0 || NXENNET_XENBUS > 0 || defined(DOM0OPS) 285 if (device_class(dev) == DV_IFNET) { 286 union xen_cmdline_parseinfo xcp; 287 288 #ifdef NFS_BOOT_BOOTSTATIC 289 #ifdef DOM0OPS 290 if (xendomain_is_privileged()) { 291 nfs_bootstatic_callback = dom0_bootstatic_callback; 292 } else 293 #endif 294 #if NXENNET_HYPERVISOR > 0 || NXENNET_XENBUS > 0 295 nfs_bootstatic_callback = xennet_bootstatic_callback; 296 #endif 297 #endif 298 xen_parse_cmdline(XEN_PARSE_BOOTDEV, &xcp); 299 if (strncmp(xcp.xcp_bootdev, device_xname(dev), 300 sizeof(xcp.xcp_bootdev)) == 0) 301 { 302 goto found; 303 } 304 } 305 #endif 306 if (device_class(dev) == DV_IFNET) { 307 struct btinfo_netif *bin = lookup_bootinfo(BTINFO_NETIF); 308 if (bin == NULL) 309 return; 310 311 /* 312 * We don't check the driver name against the device name 313 * passed by the boot ROM. The ROM should stay usable 314 * if the driver gets obsoleted. 315 * The physical attachment information (checked below) 316 * must be sufficient to identify the device. 317 */ 318 319 if (bin->bus == BI_BUS_ISA && 320 device_is_a(device_parent(dev), "isa")) { 321 struct isa_attach_args *iaa = aux; 322 323 /* compare IO base address */ 324 /* XXXJRT what about multiple I/O addrs? */ 325 if (iaa->ia_nio > 0 && 326 bin->addr.iobase == iaa->ia_io[0].ir_addr) 327 goto found; 328 } 329 #if NPCI > 0 330 if (bin->bus == BI_BUS_PCI && 331 device_is_a(device_parent(dev), "pci")) { 332 struct pci_attach_args *paa = aux; 333 int b, d, f; 334 335 /* 336 * Calculate BIOS representation of: 337 * 338 * <bus,device,function> 339 * 340 * and compare. 341 */ 342 pci_decompose_tag(paa->pa_pc, paa->pa_tag, &b, &d, &f); 343 if (bin->addr.tag == ((b << 8) | (d << 3) | f)) 344 goto found; 345 } 346 #endif 347 } 348 return; 349 350 found: 351 if (booted_device) { 352 /* XXX should be a "panic()" */ 353 printf("warning: double match for boot device (%s, %s)\n", 354 device_xname(booted_device), device_xname(dev)); 355 return; 356 } 357 booted_device = dev; 358 } 359 360 static int 361 is_valid_disk(device_t dv) 362 { 363 364 if (device_class(dv) != DV_DISK) 365 return (0); 366 367 return (device_is_a(dv, "dk") || 368 device_is_a(dv, "sd") || 369 device_is_a(dv, "wd") || 370 device_is_a(dv, "ld") || 371 device_is_a(dv, "ed") || 372 device_is_a(dv, "xbd")); 373 } 374
Indexes created Fri Oct 03 02:09:57 GMT 2025