int
main()
{
int currname = 0;
printf("\n>> OpenBSD [%dKB] UNIFIED BOOT %s HP 9000/%s CPU\n",
(__LDPGSZ / 1024), version, getmachineid());
printf(">> Enter \"reset\" to reset system.\n");
bdev = B_TYPE(bootdev);
badapt = B_ADAPTOR(bootdev);
bctlr = B_CONTROLLER(bootdev);
bunit = B_UNIT(bootdev);
bpart = B_PARTITION(bootdev);
for (;;) {
name = names[currname++];
if (currname == NUMNAMES)
currname = 0;
if (!noconsole) {
howto = 0;
getbootdev(&howto);
} else
printf(": %s\n", name);
exec(name, lowram, howto);
printf("boot: %s\n", strerror(errno));
}
return (0);
}
static void
findbootdev(void)
{
int type, ctlr, slave, punit, part;
int scsiboot, hpibboot, netboot;
struct dev_data *dd;
booted_device = NULL;
booted_partition = 0;
if ((bootdev & B_MAGICMASK) != B_DEVMAGIC)
return;
type = B_TYPE(bootdev);
ctlr = B_ADAPTOR(bootdev);
slave = B_CONTROLLER(bootdev);
punit = B_UNIT(bootdev);
part = B_PARTITION(bootdev);
scsiboot = (type == 4); /* sd major */
hpibboot = (type == 0 || type == 2); /* ct/rd major */
netboot = (type == 6); /* le - special */
/*
* Check for network boot first, since it's a little
* different. The BOOTROM/boot program can only boot
* off of the first (lowest select code) ethernet
* device. device_register() knows this and only
* registers one DV_IFNET. This is a safe assumption
* since the code that finds devices on the DIO bus
* always starts at scode 0 and works its way up.
*/
if (netboot) {
for (dd = LIST_FIRST(&dev_data_list); dd != NULL;
dd = LIST_NEXT(dd, dd_list)) {
if (device_class(dd->dd_dev) == DV_IFNET) {
/*
* Found it!
*/
booted_device = dd->dd_dev;
break;
}
}
return;
}
/*
* Check for HP-IB boots next.
*/
if (hpibboot) {
findbootdev_slave(&dev_data_list_hpib, ctlr,
slave, punit);
if (booted_device == NULL)
return;
/*
* Sanity check.
*/
if ((type == 0 && !device_is_a(booted_device, "ct")) ||
(type == 2 && !device_is_a(booted_device, "rd"))) {
printf("WARNING: boot device/type mismatch!\n");
printf("device = %s, type = %d\n",
booted_device->dv_xname, type);
booted_device = NULL;
}
goto out;
}
/*
* Check for SCSI boots last.
*/
if (scsiboot) {
findbootdev_slave(&dev_data_list_scsi, ctlr,
slave, punit);
if (booted_device == NULL)
return;
/*
* Sanity check.
*/
if ((type == 4 && !device_is_a(booted_device, "sd"))) {
printf("WARNING: boot device/type mismatch!\n");
printf("device = %s, type = %d\n",
booted_device->dv_xname, type);
booted_device = NULL;
}
goto out;
}
/* Oof! */
printf("WARNING: UNKNOWN BOOT DEVICE TYPE = %d\n", type);
out:
if (booted_device != NULL)
booted_partition = part;
}
void
cpu_rootconf(void)
{
struct dev_data *dd;
struct device *dv;
struct vfsops *vops;
/*
* Find boot device.
*/
if ((bootdev & B_MAGICMASK) != B_DEVMAGIC) {
printf("WARNING: boot program didn't supply boot device.\n");
printf("Please update your boot program.\n");
} else {
findbootdev();
if (booted_device == NULL) {
printf("WARNING: can't find match for bootdev:\n");
printf(
"type = %d, ctlr = %d, slave = %d, punit = %d, part = %d\n",
B_TYPE(bootdev), B_ADAPTOR(bootdev),
B_CONTROLLER(bootdev), B_UNIT(bootdev),
B_PARTITION(bootdev));
bootdev = 0; /* invalidate bootdev */
} else {
printf("boot device: %s\n", booted_device->dv_xname);
}
}
dv = booted_device;
/*
* If wild carded root device and wired down NFS root file system,
* pick the network interface device to use.
*/
if (rootspec == NULL) {
vops = vfs_getopsbyname("nfs");
if (vops != NULL && vops->vfs_mountroot == mountroot) {
for (dd = LIST_FIRST(&dev_data_list);
dd != NULL; dd = LIST_NEXT(dd, dd_list)) {
if (device_class(dd->dd_dev) == DV_IFNET) {
/* Got it! */
dv = dd->dd_dev;
break;
}
}
if (dd == NULL) {
printf("no network interface for NFS root");
dv = NULL;
}
}
}
/*
* If bootdev is bogus, ask the user anyhow.
*/
if (bootdev == 0)
boothowto |= RB_ASKNAME;
/*
* If we booted from tape, ask the user.
*/
if (booted_device != NULL && device_class(booted_device) == DV_TAPE)
boothowto |= RB_ASKNAME;
setroot(dv, booted_partition);
/*
* Set bootdev based on what we found as the root.
* This is given to the boot program when we reboot.
*/
setbootdev();
}
void
dkcsumattach(void)
{
struct device *dv;
struct buf *bp;
struct bdevsw *bdsw;
dev_t dev;
int error;
u_int32_t csum;
bios_diskinfo_t *bdi, *hit;
/* do nothing if no diskinfo passed from /boot, or a bad length */
if (bios_diskinfo == NULL || bios_cksumlen * DEV_BSIZE > MAXBSIZE)
return;
/*
* XXX Whatif DEV_BSIZE is changed to something else than the BIOS
* blocksize? Today, /boot doesn't cover that case so neither need
* I care here.
*/
bp = geteblk(bios_cksumlen * DEV_BSIZE); /* XXX error check? */
for (dv = alldevs.tqh_first; dv; dv = dv->dv_list.tqe_next) {
if (dv->dv_class != DV_DISK)
continue;
bp->b_dev = dev = dev_rawpart(dv);
if (dev == NODEV)
continue;
bdsw = &bdevsw[major(dev)];
/*
* This open operation guarantees a proper initialization
* of the device, for future strategy calls.
*/
error = (*bdsw->d_open)(dev, FREAD, S_IFCHR, curproc);
if (error) {
/* XXX What to do here? */
if (error != EIO)
printf("dkcsum: open of %s failed (%d)\n",
dv->dv_xname, error);
continue;
}
/* Read blocks to cksum. XXX maybe a d_read should be used. */
bp->b_blkno = 0;
bp->b_bcount = bios_cksumlen * DEV_BSIZE;
bp->b_flags = B_BUSY | B_READ;
bp->b_cylin = 0;
(*bdsw->d_strategy)(bp);
if (biowait(bp)) {
/* XXX What to do here? */
printf("dkcsum: read of %s failed (%d)\n",
dv->dv_xname, error);
error = (*bdsw->d_close)(dev, 0, S_IFCHR, curproc);
if (error)
printf("dkcsum: close of %s failed (%d)\n",
dv->dv_xname, error);
continue;
}
error = (*bdsw->d_close)(dev, FREAD, S_IFCHR, curproc);
if (error) {
/* XXX What to do here? */
printf("dkcsum: close of %s failed (%d)\n",
dv->dv_xname, error);
continue;
}
csum = adler32(0, bp->b_data, bios_cksumlen * DEV_BSIZE);
#ifdef DEBUG
printf("dkcsum: checksum of %s is %x\n", dv->dv_xname, csum);
#endif
/* Find the BIOS device */
hit = 0;
for (bdi = bios_diskinfo; bdi->bios_number != -1; bdi++) {
/* Skip non-harddrives */
if (!(bdi->bios_number & 0x80))
continue;
#ifdef DEBUG
printf("dkcsum: "
"attempting to match with BIOS drive %x csum %x\n",
bdi->bios_number, bdi->checksum);
#endif
if (bdi->checksum == csum) {
if (!hit && !(bdi->flags & BDI_PICKED))
hit = bdi;
else {
/* XXX add other heuristics here. */
printf("dkcsum: warning: "
"dup BSD->BIOS disk mapping\n");
}
}
}
/*
* If we have no hit, that's OK, we can see a lot more devices
* than the BIOS can, so this case is pretty normal.
*/
if (hit) {
#ifdef DIAGNOSTIC
printf("dkcsum: %s matched BIOS disk %x\n",
dv->dv_xname, hit->bios_number);
#endif
} else {
#ifdef DIAGNOSTIC
printf("dkcsum: %s had no matching BIOS disk\n",
dv->dv_xname);
#endif
continue;
}
/* Fixup bootdev if units match. This means that all of
* hd*, sd*, wd*, will be interpreted the same. Not 100%
* backwards compatible, but sd* and wd* should be phased-
* out in the bootblocks.
*/
if (B_UNIT(bootdev) == (hit->bios_number & 0x7F)) {
int type, ctrl, adap, part, unit;
/* Translate to MAKEBOOTDEV() style */
type = major(bp->b_dev);
adap = B_ADAPTOR(bootdev);
ctrl = B_CONTROLLER(bootdev);
unit = DISKUNIT(bp->b_dev);
part = B_PARTITION(bootdev);
bootdev = MAKEBOOTDEV(type, ctrl, adap, unit, part);
}
/* This will overwrite /boot's guess, just so you remember */
hit->bsd_dev = MAKEBOOTDEV(major(bp->b_dev), 0, 0,
DISKUNIT(bp->b_dev), RAW_PART);
hit->flags |= BDI_PICKED;
}
bp->b_flags |= B_INVAL;
brelse(bp);
}
int
devopen(struct open_file *f, const char *fname, char **file)
{
int error;
int dev, adapt, ctlr, unit, part;
struct devsw *dp = &devsw[0];
dev = B_TYPE(bootdev);
adapt = B_ADAPTOR(bootdev);
ctlr = B_CONTROLLER(bootdev);
unit = B_UNIT(bootdev);
part = B_PARTITION(bootdev);
if ((error = devparse(fname, &dev, &adapt, &ctlr, &unit, &part, file)))
return(error);
/*
* Set up filesystem type based on what device we're opening.
*/
switch (dev) {
case 0: /* ct */
bcopy(file_system_rawfs, file_system, sizeof(struct fs_ops));
break;
case 2: /* hd */
bcopy(file_system_ufs, file_system, sizeof(struct fs_ops));
break;
case 4: /* sd */
bcopy(file_system_ufs, file_system, sizeof(struct fs_ops));
bcopy(file_system_cd9660, &file_system[1],
sizeof(struct fs_ops));
nfsys = 2;
break;
case 6: /* le */
bcopy(file_system_nfs, file_system, sizeof(struct fs_ops));
break;
default:
/* XXX what else should we do here? */
printf("WARNING: BOGUS BOOT DEV TYPE 0x%x!\n", dev);
return (EIO);
}
dp = &devsw[dev];
if (!dp->dv_open)
return(ENODEV);
f->f_dev = dp;
if ((error = (*dp->dv_open)(f, adapt, ctlr, part)) == 0) {
if ((error =
(*punitsw[dev].p_punit)(adapt, ctlr, &unit)) != 0) {
goto bad;
}
opendev = MAKEBOOTDEV(dev, adapt, ctlr, unit, part);
return(0);
}
bad:
printf("%s(%d,%d,%d,%d): %s\n", devsw[dev].dv_name,
adapt, ctlr, unit, part, strerror(error));
return(error);
}
