/*      $NetBSD: autoconf.c,v 1.26 2023/10/17 12:07:42 bouyer Exp $     */
/*      NetBSD: autoconf.c,v 1.75 2003/12/30 12:33:22 pk Exp    */

/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * William Jolitz.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      @(#)autoconf.c  7.1 (Berkeley) 5/9/91
 */

/*
 * Setup the system to run on the current machine.
 *
 * Configure() is called at boot time and initializes the vba
 * device tables and the memory controller monitoring.  Available
 * devices are determined (from possibilities mentioned in ioconf.c),
 * and the drivers are initialized.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.26 2023/10/17 12:07:42 bouyer Exp $");

#include "opt_xen.h"
#include "opt_multiprocessor.h"
#include "opt_nfs_boot.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/disklabel.h>
#include <sys/disk.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/vnode.h>
#include <sys/fcntl.h>
#include <sys/dkio.h>
#include <sys/proc.h>
#include <sys/kauth.h>

#ifdef NFS_BOOT_BOOTSTATIC
#include <net/if.h>
#include <net/if_ether.h>
#include <netinet/in.h>
#include <nfs/rpcv2.h>
#include <nfs/nfsproto.h>
#include <nfs/nfs.h>
#include <nfs/nfsmount.h>
#include <nfs/nfsdiskless.h>
#include <xen/if_xennetvar.h>
#endif

#include <machine/pte.h>
#include <machine/cpu.h>
#include <machine/gdt.h>
#include <machine/pcb.h>
#include <machine/bootinfo.h>

#include <x86/autoconf.h>

struct disklist *x86_alldisks;
int x86_ndisks;
int x86_found_console;

#include "bios32.h"
#if NBIOS32 > 0
#include <machine/bios32.h>
/* XXX */
extern void platform_init(void);
#endif

#include "opt_pcibios.h"
#ifdef PCIBIOS
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <i386/pci/pcibios.h>
#endif

#ifdef DEBUG_GEOM
#define DPRINTF(a) printf a
#else
#define DPRINTF(a)
#endif

/*
 * Determine i/o configuration for a machine.
 */
void
cpu_configure(void)
{
        struct pcb *pcb;

        xen_startrtclock();

#if defined(DOM0OPS)
        if (xendomain_is_dom0()) {
#if NBIOS32 > 0
                bios32_init();
                platform_init();
                /* identify hypervisor type from SMBIOS */
                identify_hypervisor();
#endif /* NBIOS32 > 0 */
        }
#endif /* DOM0OPS */
#ifdef PCIBIOS
        pcibios_init();
#endif

        if (config_rootfound("mainbus", NULL) == NULL)
                panic("configure: mainbus not configured");

#ifdef INTRDEBUG
        intr_printconfig();
#endif

#if NIOAPIC > 0
        ioapic_enable();
#endif
        /* resync cr0 after FPU configuration */
        pcb = lwp_getpcb(&lwp0);
        pcb->pcb_cr0 = rcr0();
#ifdef MULTIPROCESSOR
        /* propagate this to the idle pcb's. */
        cpu_init_idle_lwps();
#endif

        spl0();
}

void
cpu_rootconf(void)
{
        cpu_bootconf();

        printf("boot device: %s\n",
            booted_device ? device_xname(booted_device) :
            bootspec ? bootspec : "<unknown>");
        rootconf();
}


/*
 * Attempt to find the device from which we were booted.
 */
void
cpu_bootconf(void)
{
        xen_bootconf();
}
#include "pci.h"

#include <dev/isa/isavar.h>
#if NPCI > 0
#include <dev/pci/pcivar.h>
#endif


#if defined(NFS_BOOT_BOOTSTATIC) && defined(DOM0OPS)
static int
dom0_bootstatic_callback(struct nfs_diskless *nd)
{
#if 0
        struct ifnet *ifp = nd->nd_ifp;
#endif
        int flags = 0;
        union xen_cmdline_parseinfo xcp;
        struct sockaddr_in *sin;

        memset(&xcp, 0, sizeof(xcp.xcp_netinfo));
        xcp.xcp_netinfo.xi_ifno = 0; /* XXX first interface hardcoded */
        xcp.xcp_netinfo.xi_root = nd->nd_root.ndm_host;
        xen_parse_cmdline(XEN_PARSE_NETINFO, &xcp);

        if (xcp.xcp_netinfo.xi_root[0] != '\0') {
                flags |= NFS_BOOT_HAS_SERVER;
                if (strchr(xcp.xcp_netinfo.xi_root, ':') != NULL)
                        flags |= NFS_BOOT_HAS_ROOTPATH;
        }

        nd->nd_myip.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[0]);
        nd->nd_gwip.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[2]);
        nd->nd_mask.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[3]);

        sin = (struct sockaddr_in *) &nd->nd_root.ndm_saddr;
        memset((void *)sin, 0, sizeof(*sin));
        sin->sin_len = sizeof(*sin);
        sin->sin_family = AF_INET;
        sin->sin_addr.s_addr = ntohl(xcp.xcp_netinfo.xi_ip[1]);

        if (nd->nd_myip.s_addr)
                flags |= NFS_BOOT_HAS_MYIP;
        if (nd->nd_gwip.s_addr)
                flags |= NFS_BOOT_HAS_GWIP;
        if (nd->nd_mask.s_addr)
                flags |= NFS_BOOT_HAS_MASK;
        if (sin->sin_addr.s_addr)
                flags |= NFS_BOOT_HAS_SERVADDR;

        return flags;
}
#endif

void
device_register(device_t dev, void *aux)
{
        device_t isaboot, pciboot;
        device_t found = NULL;

        isaboot = device_isa_register(dev, aux);
        pciboot = device_pci_register(dev, aux);

        /*
         * Handle network interfaces here, the attachment information is
         * not available driver independently later.
         * For disks, there is nothing useful available at attach time.
         */
#if NXENNET_HYPERVISOR > 0 || NXENNET_XENBUS > 0 || defined(DOM0OPS)
        if (device_class(dev) == DV_IFNET) {
                union xen_cmdline_parseinfo xcp;

#ifdef NFS_BOOT_BOOTSTATIC
#ifdef DOM0OPS
                if (xendomain_is_privileged()) {
                        nfs_bootstatic_callback = dom0_bootstatic_callback;
                } else
#endif
#if NXENNET_HYPERVISOR > 0 || NXENNET_XENBUS > 0
                nfs_bootstatic_callback = xennet_bootstatic_callback;
#endif
#endif
                xen_parse_cmdline(XEN_PARSE_BOOTDEV, &xcp);
                if (strncmp(xcp.xcp_bootdev, device_xname(dev),
                    sizeof(xcp.xcp_bootdev)) == 0)
                {
                        found = dev;
                }
        }
#endif
        if (found == NULL) {
                if (isaboot != NULL) 
                        found = isaboot;
                else if (pciboot != NULL)
                        found = pciboot;
        }

        if (found) {
                if (booted_device) {
                        /* XXX should be a "panic()" */
                        printf("warning: double match for boot device (%s, %s)\n",
                            device_xname(booted_device), device_xname(dev));
                        return;
                }
                booted_device = found;
                booted_method = "device/register";
        }
}