/* $OpenBSD: autoconf.c,v 1.33 2007/06/01 23:14:06 deraadt Exp $ */
/*
* Copyright (c) 1996, 1997 Per Fogelstrom
* Copyright (c) 1995 Theo de Raadt
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department and Ralph Campbell.
*
* 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.
*
* from: Utah Hdr: autoconf.c 1.31 91/01/21
*
* from: @(#)autoconf.c 8.1 (Berkeley) 6/10/93
* $Id: autoconf.c,v 1.1 2008/03/04 16:07:19 nbrk Exp $
*/
/*
* Setup the system to run on the current machine.
*
* cpu_configure() is called at boot time. Available
* devices are determined (from possibilities mentioned in ioconf.c),
* and the drivers are initialized.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/disklabel.h>
#include <sys/conf.h>
#include <sys/reboot.h>
#include <sys/device.h>
#include <dev/cons.h>
#include <uvm/uvm_extern.h>
#include <machine/autoconf.h>
#include <machine/powerpc.h>
#include <sys/disk.h>
#include <scsi/scsi_all.h>
#include <scsi/scsi_disk.h>
#include <scsi/scsiconf.h>
#include <scsi/sdvar.h>
void dumpconf(void);
struct device *getdevunit(char *, int);
static struct devmap *findtype(char **);
void makebootdev(char *cp);
int getpno(char **);
/*
* The following several variables are related to
* the configuration process, and are used in initializing
* the machine.
*/
int cold = 1; /* if 1, still working on cold-start */
char bootdev[16]; /* to hold boot dev name */
struct device *bootdv = NULL;
struct dumpmem dumpmem[VM_PHYSSEG_MAX];
u_int ndumpmem;
/*
* Configure all devices found that we know about.
* This is done at boot time.
*/
void
cpu_configure()
{
(void)splhigh(); /* To be really sure.. */
calc_delayconst();
if (config_rootfound("mainbus", "mainbus") == 0)
panic("no mainbus found");
(void)spl0();
cold = 0;
}
struct devmap {
char *att;
char *dev;
int type;
};
#define T_IFACE 0x10
#define T_BUS 0x00
#define T_SCSI 0x11
#define T_IDE 0x12
#define T_DISK 0x21
static struct devmap *
findtype(char **s)
{
static struct devmap devmap[] = {
{ "/ht", NULL, T_BUS },
{ "/ht@", NULL, T_BUS },
{ "/pci@", NULL, T_BUS },
{ "/pci", NULL, T_BUS },
{ "/AppleKiwi@", NULL, T_BUS },
{ "/AppleKiwi", NULL, T_BUS },
{ "/mac-io@", NULL, T_BUS },
{ "/mac-io", NULL, T_BUS },
{ "/@", NULL, T_BUS },
{ "/LSILogic,sas@", "sd", T_SCSI },
{ "/scsi@", "sd", T_SCSI },
{ "/ide", "wd", T_IDE },
{ "/ata", "wd", T_IDE },
{ "/k2-sata-root", NULL, T_BUS },
{ "/k2-sata", "wd", T_IDE },
{ "/disk@", "sd", T_DISK },
{ "/disk", "wd", T_DISK },
{ "/usb@", "sd", T_SCSI },
{ "/ADPT,2940U2B@", "sd", T_SCSI },
{ "/bcom5704@4", "bge0", T_IFACE },
{ "/bcom5704@4,1", "bge1", T_IFACE },
{ "/ethernet", "gem0", T_IFACE },
{ NULL, NULL }
};
struct devmap *dp = &devmap[0];
while (dp->att) {
if (strncmp(*s, dp->att, strlen(dp->att)) == 0) {
*s += strlen(dp->att);
break;
}
dp++;
}
if (dp->att == NULL)
printf("string [%s] not found\n", *s);
return(dp);
}
/*
* Look at the string 'bp' and decode the boot device.
* Boot names look like: '/pci/scsi@c/disk@0,0/bsd'
* '/pci/mac-io/ide@20000/disk@0,0/bsd
* '/pci/mac-io/ide/disk/bsd
* '/ht@0,f2000000/pci@2/bcom5704@4/bsd'
*/
void
makebootdev(char *bp)
{
int unit, ptype;
char *dev, *cp;
struct devmap *dp;
cp = bp;
do {
while(*cp && *cp != '/')
cp++;
dp = findtype(&cp);
if (!dp->att) {
printf("Warning: bootpath unrecognized: %s\n", bp);
return;
}
} while((dp->type & T_IFACE) == 0);
if (dp->att && dp->type == T_IFACE) {
snprintf(bootdev, sizeof bootdev, "%s", dp->dev);
return;
}
dev = dp->dev;
while(*cp && *cp != '/')
cp++;
ptype = dp->type;
dp = findtype(&cp);
if (dp->att && dp->type == T_DISK) {
unit = getpno(&cp);
if (ptype == T_SCSI) {
struct device *dv;
struct sd_softc *sd;
TAILQ_FOREACH(dv, &alldevs, dv_list) {
if (dv->dv_class != DV_DISK ||
strcmp(dv->dv_cfdata->cf_driver->cd_name, "sd"))
continue;
sd = (struct sd_softc *)dv;
if (sd->sc_link->target != unit)
continue;
snprintf(bootdev, sizeof bootdev,
"%s%c", dv->dv_xname, 'a');
return;
}
}
snprintf(bootdev, sizeof bootdev, "%s%d%c", dev, unit, 'a');
return;
}
printf("Warning: boot device unrecognized: %s\n", bp);
}
int
getpno(char **cp)
{
int val = 0, digit;
char *cx = *cp;
while (*cx) {
if (*cx >= '0' && *cx <= '9')
digit = *cx - '0';
else if (*cx >= 'a' && *cx <= 'f')
digit = *cx - 'a' + 0x0a;
else
break;
val = val * 16 + digit;
cx++;
}
*cp = cx;
return (val);
}
void
device_register(struct device *dev, void *aux)
{
}
/*
* find a device matching "name" and unit number
*/
struct device *
getdevunit(char *name, int unit)
{
struct device *dev = TAILQ_FIRST(&alldevs);
char num[10], fullname[16];
int lunit;
/* compute length of name and decimal expansion of unit number */
snprintf(num, sizeof num, "%d", unit);
lunit = strlen(num);
if (strlen(name) + lunit >= sizeof(fullname) - 1)
panic("config_attach: device name too long");
strlcpy(fullname, name, sizeof fullname);
strlcat(fullname, num, sizeof fullname);
while (strcmp(dev->dv_xname, fullname) != 0)
if ((dev = TAILQ_NEXT(dev, dv_list)) == NULL)
return NULL;
return dev;
}
/*
* Now that we are fully operational, we can checksum the
* disks, and using some heuristics, hopefully are able to
* always determine the correct root disk.
*/
void
diskconf(void)
{
dev_t temp;
int part = 0;
printf("bootpath: %s\n", bootpath);
makebootdev(bootpath);
/* Lookup boot device from boot if not set by configuration */
bootdv = parsedisk(bootdev, strlen(bootdev), 0, &temp);
setroot(bootdv, part, RB_USERREQ);
dumpconf();
}
struct nam2blk nam2blk[] = {
{ "wd", 0 },
{ "sd", 2 },
{ "raid", 19 },
{ NULL, -1 }
};