3f18fe8123
- Replace most remaining uses of l_addr with uvm_lwp_getuarea() or lwp_getpcb(). - Amend assembly in ports where it accesses PCB via struct user. - Rename L_ADDR to L_PCB in few places. Reduce sys/user.h inclusions.
380 lines
9.2 KiB
C
380 lines
9.2 KiB
C
/* $NetBSD: autoconf.c,v 1.13 2009/11/27 03:23:15 rmind Exp $ */
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/* NetBSD: autoconf.c,v 1.75 2003/12/30 12:33:22 pk Exp */
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)autoconf.c 7.1 (Berkeley) 5/9/91
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*/
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/*
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* Setup the system to run on the current machine.
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*
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* Configure() is called at boot time and initializes the vba
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* device tables and the memory controller monitoring. Available
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* devices are determined (from possibilities mentioned in ioconf.c),
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* and the drivers are initialized.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.13 2009/11/27 03:23:15 rmind Exp $");
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#include "opt_xen.h"
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#include "opt_compat_oldboot.h"
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#include "opt_multiprocessor.h"
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#include "opt_nfs_boot.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/buf.h>
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#include <sys/disklabel.h>
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#include <sys/disk.h>
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#include <sys/conf.h>
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#ifdef COMPAT_OLDBOOT
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#include <sys/reboot.h>
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#endif
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#include <sys/device.h>
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#include <sys/vnode.h>
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#include <sys/fcntl.h>
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#include <sys/dkio.h>
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#include <sys/proc.h>
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#include <sys/kauth.h>
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#ifdef NFS_BOOT_BOOTSTATIC
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#include <net/if.h>
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#include <net/if_ether.h>
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#include <netinet/in.h>
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#include <nfs/rpcv2.h>
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#include <nfs/nfsproto.h>
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#include <nfs/nfs.h>
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#include <nfs/nfsmount.h>
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#include <nfs/nfsdiskless.h>
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#include <xen/if_xennetvar.h>
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#endif
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#include <machine/pte.h>
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#include <machine/cpu.h>
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#include <machine/gdt.h>
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#include <machine/pcb.h>
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#include <machine/bootinfo.h>
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static void findroot(void);
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static int is_valid_disk(device_t);
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static void handle_wedges(device_t, int);
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struct disklist *x86_alldisks;
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int x86_ndisks;
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#include "bios32.h"
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#if NBIOS32 > 0
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#include <machine/bios32.h>
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#endif
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#include "opt_pcibios.h"
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#ifdef PCIBIOS
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <i386/pci/pcibios.h>
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#endif
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#include "opt_kvm86.h"
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#ifdef KVM86
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#include <machine/kvm86.h>
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#endif
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/*
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* Determine i/o configuration for a machine.
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*/
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void
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cpu_configure(void)
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{
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struct pcb *pcb;
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startrtclock();
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#if NBIOS32 > 0 && defined(DOM0OPS)
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if (xendomain_is_dom0())
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bios32_init();
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#endif /* NBIOS32 > 0 && DOM0OPS */
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#ifdef PCIBIOS
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pcibios_init();
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#endif
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#ifdef KVM86
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kvm86_init();
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#endif
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if (config_rootfound("mainbus", NULL) == NULL)
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panic("configure: mainbus not configured");
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#ifdef INTRDEBUG
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intr_printconfig();
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#endif
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/* resync cr0 after FPU configuration */
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pcb = lwp_getpcb(&lwp0);
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pcb->pcb_cr0 = rcr0();
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#ifdef MULTIPROCESSOR
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/* propagate this to the idle pcb's. */
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cpu_init_idle_lwps();
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#endif
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spl0();
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}
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void
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cpu_rootconf(void)
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{
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findroot();
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if (booted_wedge) {
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KASSERT(booted_device != NULL);
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printf("boot device: %s (%s)\n",
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device_xname(booted_wedge), device_xname(booted_device));
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setroot(booted_wedge, 0);
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} else {
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printf("boot device: %s\n",
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booted_device ? device_xname(booted_device) : "<unknown>");
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setroot(booted_device, booted_partition);
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}
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}
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/*
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* Attempt to find the device from which we were booted.
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* If we can do so, and not instructed not to do so,
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* change rootdev to correspond to the load device.
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*/
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void
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findroot(void)
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{
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device_t dv;
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deviter_t di;
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union xen_cmdline_parseinfo xcp;
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if (booted_device)
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return;
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xen_parse_cmdline(XEN_PARSE_BOOTDEV, &xcp);
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for (dv = deviter_first(&di, DEVITER_F_ROOT_FIRST);
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dv != NULL;
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dv = deviter_next(&di)) {
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bool is_ifnet, is_disk;
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const char *devname;
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is_ifnet = (device_class(dv) == DV_IFNET);
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is_disk = is_valid_disk(dv);
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devname = device_xname(dv);
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if (!is_ifnet && !is_disk)
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continue;
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if (is_disk && xcp.xcp_bootdev[0] == 0) {
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handle_wedges(dv, 0);
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break;
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}
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if (strncmp(xcp.xcp_bootdev, devname, strlen(devname)))
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continue;
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if (is_disk && strlen(xcp.xcp_bootdev) > strlen(devname)) {
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booted_partition = toupper(
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xcp.xcp_bootdev[strlen(devname)]) - 'A';
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}
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booted_device = dv;
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break;
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}
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deviter_release(&di);
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}
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#include "pci.h"
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#include <dev/isa/isavar.h>
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#if NPCI > 0
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#include <dev/pci/pcivar.h>
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#endif
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#if defined(NFS_BOOT_BOOTSTATIC) && defined(DOM0OPS)
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static int
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dom0_bootstatic_callback(struct nfs_diskless *nd)
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{
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#if 0
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struct ifnet *ifp = nd->nd_ifp;
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#endif
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int flags = 0;
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union xen_cmdline_parseinfo xcp;
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struct sockaddr_in *sin;
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memset(&xcp, 0, sizeof(xcp.xcp_netinfo));
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xcp.xcp_netinfo.xi_ifno = 0; /* XXX first interface hardcoded */
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xcp.xcp_netinfo.xi_root = nd->nd_root.ndm_host;
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xen_parse_cmdline(XEN_PARSE_NETINFO, &xcp);
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if (xcp.xcp_netinfo.xi_root[0] != '\0') {
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flags |= NFS_BOOT_HAS_SERVER;
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if (strchr(xcp.xcp_netinfo.xi_root, ':') != NULL)
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flags |= NFS_BOOT_HAS_ROOTPATH;
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}
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nd->nd_myip.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[0]);
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nd->nd_gwip.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[2]);
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nd->nd_mask.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[3]);
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sin = (struct sockaddr_in *) &nd->nd_root.ndm_saddr;
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memset((void *)sin, 0, sizeof(*sin));
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sin->sin_len = sizeof(*sin);
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sin->sin_family = AF_INET;
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sin->sin_addr.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[1]);
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if (nd->nd_myip.s_addr)
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flags |= NFS_BOOT_HAS_MYIP;
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if (nd->nd_gwip.s_addr)
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flags |= NFS_BOOT_HAS_GWIP;
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if (nd->nd_mask.s_addr)
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flags |= NFS_BOOT_HAS_MASK;
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if (sin->sin_addr.s_addr)
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flags |= NFS_BOOT_HAS_SERVADDR;
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return flags;
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}
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#endif
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void
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device_register(device_t dev, void *aux)
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{
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/*
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* Handle network interfaces here, the attachment information is
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* not available driver independently later.
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* For disks, there is nothing useful available at attach time.
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*/
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#if NXENNET_HYPERVISOR > 0 || NXENNET_XENBUS > 0 || defined(DOM0OPS)
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if (device_class(dev) == DV_IFNET) {
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union xen_cmdline_parseinfo xcp;
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#ifdef NFS_BOOT_BOOTSTATIC
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#ifdef DOM0OPS
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if (xendomain_is_privileged()) {
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nfs_bootstatic_callback = dom0_bootstatic_callback;
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} else
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#endif
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#if NXENNET_HYPERVISOR > 0 || NXENNET_XENBUS > 0
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nfs_bootstatic_callback = xennet_bootstatic_callback;
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#endif
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#endif
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xen_parse_cmdline(XEN_PARSE_BOOTDEV, &xcp);
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if (strncmp(xcp.xcp_bootdev, device_xname(dev),
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sizeof(xcp.xcp_bootdev)) == 0)
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{
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goto found;
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}
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}
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#endif
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if (device_class(dev) == DV_IFNET) {
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struct btinfo_netif *bin = lookup_bootinfo(BTINFO_NETIF);
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if (bin == NULL)
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return;
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/*
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* We don't check the driver name against the device name
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* passed by the boot ROM. The ROM should stay usable
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* if the driver gets obsoleted.
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* The physical attachment information (checked below)
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* must be sufficient to identify the device.
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*/
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if (bin->bus == BI_BUS_ISA &&
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device_is_a(device_parent(dev), "isa")) {
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struct isa_attach_args *iaa = aux;
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/* compare IO base address */
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/* XXXJRT what about multiple I/O addrs? */
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if (iaa->ia_nio > 0 &&
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bin->addr.iobase == iaa->ia_io[0].ir_addr)
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goto found;
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}
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#if NPCI > 0
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if (bin->bus == BI_BUS_PCI &&
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device_is_a(device_parent(dev), "pci")) {
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struct pci_attach_args *paa = aux;
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int b, d, f;
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/*
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* Calculate BIOS representation of:
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*
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* <bus,device,function>
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*
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* and compare.
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*/
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pci_decompose_tag(paa->pa_pc, paa->pa_tag, &b, &d, &f);
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if (bin->addr.tag == ((b << 8) | (d << 3) | f))
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goto found;
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}
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#endif
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}
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return;
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found:
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if (booted_device) {
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/* XXX should be a "panic()" */
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printf("warning: double match for boot device (%s, %s)\n",
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device_xname(booted_device), device_xname(dev));
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return;
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}
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booted_device = dev;
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}
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static void
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handle_wedges(device_t dv, int par)
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{
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if (config_handle_wedges(dv, par) == 0)
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return;
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booted_device = dv;
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booted_partition = par;
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}
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static int
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is_valid_disk(device_t dv)
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{
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if (device_class(dv) != DV_DISK)
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return (0);
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return (device_is_a(dv, "dk") ||
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device_is_a(dv, "sd") ||
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device_is_a(dv, "wd") ||
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device_is_a(dv, "ld") ||
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device_is_a(dv, "ed") ||
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device_is_a(dv, "xbd"));
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}
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