autoconf.c revision 1.25
1 /* $NetBSD: autoconf.c,v 1.25 2020/05/02 16:44:36 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 1.25 2020/05/02 16:44:36 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 struct disklist *x86_alldisks; 86 int x86_ndisks; 87 int x86_found_console; 88 89 #include "bios32.h" 90 #if NBIOS32 > 0 91 #include <machine/bios32.h> 92 /* XXX */ 93 extern void platform_init(void); 94 #endif 95 96 #include "opt_pcibios.h" 97 #ifdef PCIBIOS 98 #include <dev/pci/pcireg.h> 99 #include <dev/pci/pcivar.h> 100 #include <i386/pci/pcibios.h> 101 #endif 102 103 #ifdef DEBUG_GEOM 104 #define DPRINTF(a) printf a 105 #else 106 #define DPRINTF(a) 107 #endif 108 109 /* 110 * Determine i/o configuration for a machine. 111 */ 112 void 113 cpu_configure(void) 114 { 115 struct pcb *pcb; 116 117 xen_startrtclock(); 118 119 #if defined(DOM0OPS) 120 if (xendomain_is_dom0()) { 121 #if NBIOS32 > 0 122 bios32_init(); 123 platform_init(); 124 /* identify hypervisor type from SMBIOS */ 125 identify_hypervisor(); 126 #endif /* NBIOS32 > 0 */ 127 } 128 #endif /* DOM0OPS */ 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 #if NIOAPIC > 0 141 ioapic_enable(); 142 #endif 143 /* resync cr0 after FPU configuration */ 144 pcb = lwp_getpcb(&lwp0); 145 pcb->pcb_cr0 = rcr0(); 146 #ifdef MULTIPROCESSOR 147 /* propagate this to the idle pcb's. */ 148 cpu_init_idle_lwps(); 149 #endif 150 151 spl0(); 152 } 153 154 void 155 cpu_rootconf(void) 156 { 157 cpu_bootconf(); 158 159 printf("boot device: %s\n", 160 booted_device ? device_xname(booted_device) : 161 bootspec ? bootspec : "<unknown>"); 162 rootconf(); 163 } 164 165 166 /* 167 * Attempt to find the device from which we were booted. 168 */ 169 void 170 cpu_bootconf(void) 171 { 172 xen_bootconf(); 173 } 174 #include "pci.h" 175 176 #include <dev/isa/isavar.h> 177 #if NPCI > 0 178 #include <dev/pci/pcivar.h> 179 #endif 180 181 182 #if defined(NFS_BOOT_BOOTSTATIC) && defined(DOM0OPS) 183 static int 184 dom0_bootstatic_callback(struct nfs_diskless *nd) 185 { 186 #if 0 187 struct ifnet *ifp = nd->nd_ifp; 188 #endif 189 int flags = 0; 190 union xen_cmdline_parseinfo xcp; 191 struct sockaddr_in *sin; 192 193 memset(&xcp, 0, sizeof(xcp.xcp_netinfo)); 194 xcp.xcp_netinfo.xi_ifno = 0; /* XXX first interface hardcoded */ 195 xcp.xcp_netinfo.xi_root = nd->nd_root.ndm_host; 196 xen_parse_cmdline(XEN_PARSE_NETINFO, &xcp); 197 198 if (xcp.xcp_netinfo.xi_root[0] != '\0') { 199 flags |= NFS_BOOT_HAS_SERVER; 200 if (strchr(xcp.xcp_netinfo.xi_root, ':') != NULL) 201 flags |= NFS_BOOT_HAS_ROOTPATH; 202 } 203 204 nd->nd_myip.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[0]); 205 nd->nd_gwip.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[2]); 206 nd->nd_mask.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[3]); 207 208 sin = (struct sockaddr_in *) &nd->nd_root.ndm_saddr; 209 memset((void *)sin, 0, sizeof(*sin)); 210 sin->sin_len = sizeof(*sin); 211 sin->sin_family = AF_INET; 212 sin->sin_addr.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[1]); 213 214 if (nd->nd_myip.s_addr) 215 flags |= NFS_BOOT_HAS_MYIP; 216 if (nd->nd_gwip.s_addr) 217 flags |= NFS_BOOT_HAS_GWIP; 218 if (nd->nd_mask.s_addr) 219 flags |= NFS_BOOT_HAS_MASK; 220 if (sin->sin_addr.s_addr) 221 flags |= NFS_BOOT_HAS_SERVADDR; 222 223 return flags; 224 } 225 #endif 226 227 void 228 device_register(device_t dev, void *aux) 229 { 230 /* 231 * Handle network interfaces here, the attachment information is 232 * not available driver independently later. 233 * For disks, there is nothing useful available at attach time. 234 */ 235 #if NXENNET_HYPERVISOR > 0 || NXENNET_XENBUS > 0 || defined(DOM0OPS) 236 if (device_class(dev) == DV_IFNET) { 237 union xen_cmdline_parseinfo xcp; 238 239 #ifdef NFS_BOOT_BOOTSTATIC 240 #ifdef DOM0OPS 241 if (xendomain_is_privileged()) { 242 nfs_bootstatic_callback = dom0_bootstatic_callback; 243 } else 244 #endif 245 #if NXENNET_HYPERVISOR > 0 || NXENNET_XENBUS > 0 246 nfs_bootstatic_callback = xennet_bootstatic_callback; 247 #endif 248 #endif 249 xen_parse_cmdline(XEN_PARSE_BOOTDEV, &xcp); 250 if (strncmp(xcp.xcp_bootdev, device_xname(dev), 251 sizeof(xcp.xcp_bootdev)) == 0) 252 { 253 goto found; 254 } 255 } 256 #endif 257 if (device_class(dev) == DV_IFNET) { 258 struct btinfo_netif *bin = lookup_bootinfo(BTINFO_NETIF); 259 if (bin == NULL) 260 return; 261 262 /* 263 * We don't check the driver name against the device name 264 * passed by the boot ROM. The ROM should stay usable 265 * if the driver gets obsoleted. 266 * The physical attachment information (checked below) 267 * must be sufficient to identify the device. 268 */ 269 270 if (bin->bus == BI_BUS_ISA && 271 device_is_a(device_parent(dev), "isa")) { 272 struct isa_attach_args *iaa = aux; 273 274 /* compare IO base address */ 275 /* XXXJRT what about multiple I/O addrs? */ 276 if (iaa->ia_nio > 0 && 277 bin->addr.iobase == iaa->ia_io[0].ir_addr) 278 goto found; 279 } 280 #if NPCI > 0 281 if (bin->bus == BI_BUS_PCI && 282 device_is_a(device_parent(dev), "pci")) { 283 struct pci_attach_args *paa = aux; 284 int b, d, f; 285 286 /* 287 * Calculate BIOS representation of: 288 * 289 * <bus,device,function> 290 * 291 * and compare. 292 */ 293 pci_decompose_tag(paa->pa_pc, paa->pa_tag, &b, &d, &f); 294 if (bin->addr.tag == ((b << 8) | (d << 3) | f)) 295 goto found; 296 } 297 #endif 298 } 299 return; 300 301 found: 302 if (booted_device) { 303 /* XXX should be a "panic()" */ 304 printf("warning: double match for boot device (%s, %s)\n", 305 device_xname(booted_device), device_xname(dev)); 306 return; 307 } 308 booted_device = dev; 309 } 310
Indexes created Thu Oct 02 14:10:14 GMT 2025