autoconf.c revision 87620
14Srgrimes/*- 24Srgrimes * Copyright (c) 1990 The Regents of the University of California. 34Srgrimes * All rights reserved. 44Srgrimes * 54Srgrimes * This code is derived from software contributed to Berkeley by 64Srgrimes * William Jolitz. 74Srgrimes * 84Srgrimes * Redistribution and use in source and binary forms, with or without 94Srgrimes * modification, are permitted provided that the following conditions 104Srgrimes * are met: 114Srgrimes * 1. Redistributions of source code must retain the above copyright 124Srgrimes * notice, this list of conditions and the following disclaimer. 134Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 144Srgrimes * notice, this list of conditions and the following disclaimer in the 154Srgrimes * documentation and/or other materials provided with the distribution. 164Srgrimes * 3. All advertising materials mentioning features or use of this software 174Srgrimes * must display the following acknowledgement: 184Srgrimes * This product includes software developed by the University of 194Srgrimes * California, Berkeley and its contributors. 204Srgrimes * 4. Neither the name of the University nor the names of its contributors 214Srgrimes * may be used to endorse or promote products derived from this software 224Srgrimes * without specific prior written permission. 234Srgrimes * 244Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 254Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 264Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 274Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 284Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 294Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 304Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 314Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 324Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 334Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 344Srgrimes * SUCH DAMAGE. 354Srgrimes * 36620Srgrimes * from: @(#)autoconf.c 7.1 (Berkeley) 5/9/91 3750477Speter * $FreeBSD: head/sys/i386/i386/autoconf.c 87620 2001-12-10 20:02:22Z guido $ 384Srgrimes */ 394Srgrimes 404Srgrimes/* 414Srgrimes * Setup the system to run on the current machine. 424Srgrimes * 438876Srgrimes * Configure() is called at boot time and initializes the vba 444Srgrimes * device tables and the memory controller monitoring. Available 454Srgrimes * devices are determined (from possibilities mentioned in ioconf.c), 464Srgrimes * and the drivers are initialized. 474Srgrimes */ 4832358Seivind#include "opt_bootp.h" 4971785Speter#include "opt_isa.h" 5053888Sdillon#include "opt_nfs.h" 5137272Sjmg#include "opt_nfsroot.h" 5245720Speter#include "opt_bus.h" 5325164Speter 542056Swollman#include <sys/param.h> 552056Swollman#include <sys/systm.h> 5645720Speter#include <sys/bus.h> 572056Swollman#include <sys/conf.h> 5831328Speter#include <sys/disklabel.h> 5936809Sbde#include <sys/diskslice.h> 602056Swollman#include <sys/reboot.h> 612056Swollman#include <sys/kernel.h> 6236809Sbde#include <sys/malloc.h> 6312604Sbde#include <sys/mount.h> 6449558Sphk#include <sys/cons.h> 654Srgrimes 6683651Speter#if defined(NFSCLIENT) && defined(NFS_ROOT) 6783651Speter#include <sys/socket.h> 6883651Speter#include <net/if.h> 6983651Speter#include <net/if_dl.h> 7083651Speter#include <net/if_types.h> 7183651Speter#include <net/if_var.h> 7283651Speter#include <net/ethernet.h> 7383651Speter#include <netinet/in.h> 7483651Speter#include <nfs/rpcv2.h> 7583651Speter#include <nfs/nfsproto.h> 7683651Speter#include <nfsclient/nfs.h> 7783651Speter#include <nfsclient/nfsdiskless.h> 7883651Speter#endif 7983651Speter 8020641Sbde#include <machine/bootinfo.h> 817090Sbde#include <machine/md_var.h> 8227288Sfsmp#ifdef APIC_IO 8325164Speter#include <machine/smp.h> 8450197Speter#else 8550197Speter#include <i386/isa/icu.h> 8625164Speter#endif /* APIC_IO */ 8727288Sfsmp 8871785Speter#ifdef DEV_ISA 8950769Sdfr#include <isa/isavar.h> 9055117Sbde 9146915Speterdevice_t isa_bus_device = 0; 9255117Sbde#endif 9346915Speter 9442817Speterstatic void configure_first __P((void *)); 9512604Sbdestatic void configure __P((void *)); 9642817Speterstatic void configure_final __P((void *)); 9712604Sbde 9883651Speter#if defined(NFSCLIENT) && defined(NFS_ROOT) 9965500Smsmithstatic void pxe_setup_nfsdiskless(void); 10065500Smsmith#endif 10165500Smsmith 10242817SpeterSYSINIT(configure1, SI_SUB_CONFIGURE, SI_ORDER_FIRST, configure_first, NULL); 10342817Speter/* SI_ORDER_SECOND is hookable */ 10442817SpeterSYSINIT(configure2, SI_SUB_CONFIGURE, SI_ORDER_THIRD, configure, NULL); 10542817Speter/* SI_ORDER_MIDDLE is hookable */ 10642817SpeterSYSINIT(configure3, SI_SUB_CONFIGURE, SI_ORDER_ANY, configure_final, NULL); 10742817Speter 10846806Sphkdev_t rootdev = NODEV; 10946806Sphkdev_t dumpdev = NODEV; 11042817Speter 11145720Speterdevice_t nexus_dev; 11245720Speter 1134Srgrimes/* 1144Srgrimes * Determine i/o configuration for a machine. 1154Srgrimes */ 11610665Sbdestatic void 11742817Speterconfigure_first(dummy) 11842817Speter void *dummy; 11942817Speter{ 12042817Speter} 12142817Speter 12242817Speterstatic void 12310665Sbdeconfigure(dummy) 12410653Sdg void *dummy; 1254Srgrimes{ 1264Srgrimes 12729675Sgibbs /* 12850184Speter * Activate the ICU's. Note that we are explicitly at splhigh() 12950184Speter * at present as we have no way to disable stray PCI level triggered 13050184Speter * interrupts until the devices have had a driver attached. This 13150184Speter * is particularly a problem when the interrupts are shared. For 13250184Speter * example, if IRQ 10 is shared between a disk and network device 13350184Speter * and the disk device generates an interrupt, if we "activate" 13450184Speter * IRQ 10 when the network driver is set up, then we will get 13550184Speter * recursive interrupt 10's as nothing will know how to turn off 13650184Speter * the disk device's interrupt. 13750184Speter * 13850184Speter * Having the ICU's active means we can probe interrupt routing to 13950184Speter * see if a device causes the corresponding pending bit to be set. 14050184Speter * 14150184Speter * This is all rather inconvenient. 14229675Sgibbs */ 14327288Sfsmp#ifdef APIC_IO 14427288Sfsmp bsp_apic_configure(); 14525172Speter enable_intr(); 14627288Sfsmp#else 14727288Sfsmp enable_intr(); 14825172Speter INTREN(IRQ_SLAVE); 14927288Sfsmp#endif /* APIC_IO */ 15012791Sgibbs 15145720Speter /* nexus0 is the top of the i386 device tree */ 15254073Smdodd device_add_child(root_bus, "nexus", 0); 15312791Sgibbs 15438779Snsouch /* initialize new bus architecture */ 15538779Snsouch root_bus_configure(); 15638779Snsouch 15771785Speter#ifdef DEV_ISA 15850184Speter /* 15950184Speter * Explicitly probe and attach ISA last. The isa bus saves 16050184Speter * it's device node at attach time for us here. 16150184Speter */ 16245720Speter if (isa_bus_device) 16350769Sdfr isa_probe_children(isa_bus_device); 16450769Sdfr#endif 16545720Speter 16631336Sbde /* 16731336Sbde * Now we're ready to handle (pending) interrupts. 16831336Sbde * XXX this is slightly misplaced. 16931336Sbde */ 17031336Sbde spl0(); 17142817Speter} 17231337Sbde 17342817Speterstatic void 17442817Speterconfigure_final(dummy) 17542817Speter void *dummy; 17642817Speter{ 17742817Speter int i; 17822564Sbde 17987620Sguido cninit_finish(); 18010665Sbde 18120641Sbde if (bootverbose) { 18227561Sfsmp 18327561Sfsmp#ifdef APIC_IO 18427615Sfsmp imen_dump(); 18527561Sfsmp#endif /* APIC_IO */ 18627561Sfsmp 18720641Sbde /* 18820641Sbde * Print out the BIOS's idea of the disk geometries. 18920641Sbde */ 19020641Sbde printf("BIOS Geometries:\n"); 19120641Sbde for (i = 0; i < N_BIOS_GEOM; i++) { 19220641Sbde unsigned long bios_geom; 19320641Sbde int max_cylinder, max_head, max_sector; 19420641Sbde 19520641Sbde bios_geom = bootinfo.bi_bios_geom[i]; 19620641Sbde 19720641Sbde /* 19820641Sbde * XXX the bootstrap punts a 1200K floppy geometry 19920641Sbde * when the get-disk-geometry interrupt fails. Skip 20020641Sbde * drives that have this geometry. 20120641Sbde */ 20220641Sbde if (bios_geom == 0x4f010f) 20320641Sbde continue; 20420641Sbde 20520641Sbde printf(" %x:%08lx ", i, bios_geom); 20620641Sbde max_cylinder = bios_geom >> 16; 20720641Sbde max_head = (bios_geom >> 8) & 0xff; 20820641Sbde max_sector = bios_geom & 0xff; 20920641Sbde printf( 21020641Sbde "0..%d=%d cylinders, 0..%d=%d heads, 1..%d=%d sectors\n", 21120641Sbde max_cylinder, max_cylinder + 1, 21220641Sbde max_head, max_head + 1, 21320641Sbde max_sector, max_sector); 21420641Sbde } 21520641Sbde printf(" %d accounted for\n", bootinfo.bi_n_bios_used); 21620641Sbde 21716075Sjoerg printf("Device configuration finished.\n"); 21820641Sbde } 21929675Sgibbs cold = 0; 22029675Sgibbs} 22116075Sjoerg 22253888Sdillon#ifdef BOOTP 22353888Sdillonextern void bootpc_init(void); 22453888Sdillon#endif 22552778Smsmith/* 22652778Smsmith * Do legacy root filesystem discovery. 22752778Smsmith */ 22829675Sgibbsvoid 22929675Sgibbscpu_rootconf() 23029675Sgibbs{ 23153888Sdillon#ifdef BOOTP 23253888Sdillon bootpc_init(); 23353888Sdillon#endif 23483651Speter#if defined(NFSCLIENT) && defined(NFS_ROOT) 23552778Smsmith#if !defined(BOOTP_NFSROOT) 23665500Smsmith pxe_setup_nfsdiskless(); 23752778Smsmith if (nfs_diskless_valid) 2387731Sphk#endif 23952778Smsmith rootdevnames[0] = "nfs:"; 2404Srgrimes#endif 24129675Sgibbs} 24252778SmsmithSYSINIT(cpu_rootconf, SI_SUB_ROOT_CONF, SI_ORDER_FIRST, cpu_rootconf, NULL) 24317355Sbde 2448833Sdgu_long bootdev = 0; /* not a dev_t - encoding is different */ 2454Srgrimes 24683651Speter#if defined(NFSCLIENT) && defined(NFS_ROOT) 24765500Smsmith 24865500Smsmithstatic int 24965500Smsmithinaddr_to_sockaddr(char *ev, struct sockaddr_in *sa) 25065500Smsmith{ 25165500Smsmith u_int32_t a[4]; 25265500Smsmith char *cp; 25365500Smsmith 25465500Smsmith bzero(sa, sizeof(*sa)); 25565500Smsmith sa->sin_len = sizeof(*sa); 25665500Smsmith sa->sin_family = AF_INET; 25765500Smsmith 25865500Smsmith if ((cp = getenv(ev)) == NULL) 25965500Smsmith return(1); 26065500Smsmith if (sscanf(cp, "%d.%d.%d.%d", &a[0], &a[1], &a[2], &a[3]) != 4) 26165500Smsmith return(1); 26265500Smsmith /* XXX is this ordering correct? */ 26365500Smsmith sa->sin_addr.s_addr = (a[3] << 24) + (a[2] << 16) + (a[1] << 8) + a[0]; 26465500Smsmith return(0); 26565500Smsmith} 26665500Smsmith 26765500Smsmithstatic int 26865500Smsmithhwaddr_to_sockaddr(char *ev, struct sockaddr_dl *sa) 26965500Smsmith{ 27065500Smsmith char *cp; 27165500Smsmith u_int32_t a[6]; 27265500Smsmith 27365500Smsmith bzero(sa, sizeof(*sa)); 27465500Smsmith sa->sdl_len = sizeof(*sa); 27565500Smsmith sa->sdl_family = AF_LINK; 27665500Smsmith sa->sdl_type = IFT_ETHER; 27765500Smsmith sa->sdl_alen = ETHER_ADDR_LEN; 27865500Smsmith if ((cp = getenv(ev)) == NULL) 27965500Smsmith return(1); 28065500Smsmith if (sscanf(cp, "%x:%x:%x:%x:%x:%x", &a[0], &a[1], &a[2], &a[3], &a[4], &a[5]) != 6) 28165500Smsmith return(1); 28265500Smsmith sa->sdl_data[0] = a[0]; 28365500Smsmith sa->sdl_data[1] = a[1]; 28465500Smsmith sa->sdl_data[2] = a[2]; 28565500Smsmith sa->sdl_data[3] = a[3]; 28665500Smsmith sa->sdl_data[4] = a[4]; 28765500Smsmith sa->sdl_data[5] = a[5]; 28865500Smsmith return(0); 28965500Smsmith} 29065500Smsmith 29165500Smsmithstatic int 29265500Smsmithdecode_nfshandle(char *ev, u_char *fh) 29365500Smsmith{ 29465500Smsmith u_char *cp; 29565500Smsmith int len, val; 29665500Smsmith 29765500Smsmith if (((cp = getenv(ev)) == NULL) || (strlen(cp) < 2) || (*cp != 'X')) 29865500Smsmith return(0); 29965500Smsmith len = 0; 30065500Smsmith cp++; 30165500Smsmith for (;;) { 30265500Smsmith if (*cp == 'X') 30365500Smsmith return(len); 30465500Smsmith if ((sscanf(cp, "%2x", &val) != 1) || (val > 0xff)) 30565500Smsmith return(0); 30665500Smsmith *(fh++) = val; 30765500Smsmith len++; 30865500Smsmith cp += 2; 30965500Smsmith if (len > NFSX_V2FH) 31065500Smsmith return(0); 31165500Smsmith } 31265500Smsmith} 31365500Smsmith 31465500Smsmith/* 31565500Smsmith * Populate the essential fields in the nfsv3_diskless structure. 31665500Smsmith * 31765500Smsmith * The loader is expected to export the following environment variables: 31865500Smsmith * 31965500Smsmith * boot.netif.ip IP address on boot interface 32065500Smsmith * boot.netif.netmask netmask on boot interface 32165500Smsmith * boot.netif.gateway default gateway (optional) 32265500Smsmith * boot.netif.hwaddr hardware address of boot interface 32365500Smsmith * boot.nfsroot.server IP address of root filesystem server 32465500Smsmith * boot.nfsroot.path path of the root filesystem on server 32565500Smsmith * boot.nfsroot.nfshandle NFS handle for root filesystem on server 32665500Smsmith */ 32765500Smsmithstatic void 32883651Speterpxe_setup_nfsdiskless(void) 32965500Smsmith{ 33065500Smsmith struct nfs_diskless *nd = &nfs_diskless; 33165500Smsmith struct ifnet *ifp; 33265500Smsmith struct ifaddr *ifa; 33365500Smsmith struct sockaddr_dl *sdl, ourdl; 33465500Smsmith struct sockaddr_in myaddr, netmask; 33565500Smsmith char *cp; 33665500Smsmith 33765500Smsmith /* set up interface */ 33865500Smsmith if (inaddr_to_sockaddr("boot.netif.ip", &myaddr)) 33965500Smsmith return; 34065500Smsmith if (inaddr_to_sockaddr("boot.netif.netmask", &netmask)) { 34165500Smsmith printf("PXE: no netmask\n"); 34265500Smsmith return; 34365500Smsmith } 34465500Smsmith bcopy(&myaddr, &nd->myif.ifra_addr, sizeof(myaddr)); 34565500Smsmith bcopy(&myaddr, &nd->myif.ifra_broadaddr, sizeof(myaddr)); 34665500Smsmith ((struct sockaddr_in *) &nd->myif.ifra_broadaddr)->sin_addr.s_addr = 34765500Smsmith myaddr.sin_addr.s_addr | ~ netmask.sin_addr.s_addr; 34865500Smsmith bcopy(&netmask, &nd->myif.ifra_mask, sizeof(netmask)); 34965500Smsmith 35065500Smsmith if (hwaddr_to_sockaddr("boot.netif.hwaddr", &ourdl)) { 35165500Smsmith printf("PXE: no hardware address\n"); 35265500Smsmith return; 35365500Smsmith } 35465500Smsmith ifa = NULL; 35565500Smsmith TAILQ_FOREACH(ifp, &ifnet, if_link) { 35665500Smsmith TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { 35765500Smsmith if ((ifa->ifa_addr->sa_family == AF_LINK) && 35865500Smsmith (sdl = ((struct sockaddr_dl *)ifa->ifa_addr))) { 35965500Smsmith if ((sdl->sdl_type == ourdl.sdl_type) && 36065500Smsmith (sdl->sdl_alen == ourdl.sdl_alen) && 36165500Smsmith !bcmp(sdl->sdl_data + sdl->sdl_nlen, 36265500Smsmith ourdl.sdl_data + ourdl.sdl_nlen, 36365500Smsmith sdl->sdl_alen)) 36465500Smsmith goto match_done; 36565500Smsmith } 36665500Smsmith } 36765500Smsmith } 36865500Smsmith printf("PXE: no interface\n"); 36965500Smsmith return; /* no matching interface */ 37065500Smsmithmatch_done: 37165500Smsmith sprintf(nd->myif.ifra_name, "%s%d", ifp->if_name, ifp->if_unit); 37265500Smsmith 37365500Smsmith 37465500Smsmith /* set up gateway */ 37565500Smsmith inaddr_to_sockaddr("boot.netif.gateway", &nd->mygateway); 37665500Smsmith 37765500Smsmith /* XXX set up swap? */ 37865500Smsmith 37965500Smsmith /* set up root mount */ 38065500Smsmith nd->root_args.rsize = 8192; /* XXX tunable? */ 38165500Smsmith nd->root_args.wsize = 8192; 38265500Smsmith nd->root_args.sotype = SOCK_DGRAM; 38365500Smsmith nd->root_args.flags = (NFSMNT_WSIZE | NFSMNT_RSIZE | NFSMNT_RESVPORT); 38465500Smsmith if (inaddr_to_sockaddr("boot.nfsroot.server", &nd->root_saddr)) { 38565500Smsmith printf("PXE: no server\n"); 38665500Smsmith return; 38765500Smsmith } 38865500Smsmith nd->root_saddr.sin_port = htons(NFS_PORT); 38965500Smsmith if (decode_nfshandle("boot.nfsroot.nfshandle", &nd->root_fh[0]) == 0) { 39065500Smsmith printf("PXE: no NFS handle\n"); 39165500Smsmith return; 39265500Smsmith } 39365500Smsmith if ((cp = getenv("boot.nfsroot.path")) != NULL) 39465500Smsmith strncpy(nd->root_hostnam, cp, MNAMELEN - 1); 39565500Smsmith 39665500Smsmith nfs_diskless_valid = 1; 39765500Smsmith} 39865500Smsmith#endif 399