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Add support to boot from ide hard disks.

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This commit is contained in:
veego 1999-02-16 07:25:43 +00:00
parent 8d45c4eb84
commit 8dcc2f0651
1 changed files with 38 additions and 9 deletions
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47
sys/arch/alpha/alpha/dec_eb164.c
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@ -1,4 +1,4 @@
/* $NetBSD: dec_eb164.c,v 1.27 1999/02/13 02:41:40 thorpej Exp $ */
/* $NetBSD: dec_eb164.c,v 1.28 1999/02/16 07:25:43 veego Exp $ */
/*
* Copyright (c) 1995, 1996, 1997 Carnegie-Mellon University.
@ -32,7 +32,7 @@
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: dec_eb164.c,v 1.27 1999/02/13 02:41:40 thorpej Exp $");
__KERNEL_RCSID(0, "$NetBSD: dec_eb164.c,v 1.28 1999/02/16 07:25:43 veego Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -150,8 +150,8 @@ dec_eb164_device_register(dev, aux)
struct device *dev;
void *aux;
{
static int found, initted, scsiboot, netboot;
static struct device *pcidev, *scsidev;
static int found, initted, scsiboot, ideboot, netboot;
static struct device *pcidev, *scsipidev;
struct bootdev_data *b = bootdev_data;
struct device *parent = dev->dv_parent;
struct cfdata *cf = dev->dv_cfdata;
@ -163,8 +163,15 @@ dec_eb164_device_register(dev, aux)
if (!initted) {
scsiboot = (strcmp(b->protocol, "SCSI") == 0);
netboot = (strcmp(b->protocol, "BOOTP") == 0);
/*
* Add an extra check to boot from ide drives:
* Newer SRM firmware use the protocol identifier IDE,
* older SRM firmware use the protocol identifier SCSI.
*/
ideboot = (strcmp(b->protocol, "IDE") == 0);
#if 0
printf("scsiboot = %d, netboot = %d\n", scsiboot, netboot);
printf("scsiboot = %d, ideboot = %d, netboot = %d\n", scsiboot,
ideboot, netboot);
#endif
initted =1;
}
@ -186,7 +193,7 @@ dec_eb164_device_register(dev, aux)
}
}
if (scsiboot && (scsidev == NULL)) {
if ( (ideboot || scsiboot) && (scsipidev == NULL) ) {
if (parent != pcidev)
return;
else {
@ -197,9 +204,9 @@ dec_eb164_device_register(dev, aux)
/* XXX function? */
scsidev = dev;
scsipidev = dev;
#if 0
printf("\nscsidev = %s\n", scsidev->dv_xname);
printf("\nscsipidev = %s\n", scsipidev->dv_xname);
#endif
return;
}
@ -211,7 +218,7 @@ dec_eb164_device_register(dev, aux)
!strcmp(cd->cd_name, "cd"))) {
struct scsipibus_attach_args *sa = aux;
if (parent->dv_parent != scsidev)
if (parent->dv_parent != scsipidev)
return;
if (b->unit / 100 != sa->sa_sc_link->scsipi_scsi.target)
@ -241,6 +248,28 @@ dec_eb164_device_register(dev, aux)
found = 1;
}
/*
* Support to boot from IDE drives.
* Should work with all SRM firmware versions, but is at the
* moment limited to hard disks. (No support for booting from an
* IDE cdrom).
*/
if ( (ideboot || scsiboot) && !strcmp(cd->cd_name, "wd")) {
if ((strncmp("pciide", parent->dv_xname, 6) != 0)) {
return;
} else {
if (parent != scsipidev)
return;
}
/* we've found it! */
booted_device = dev;
#if 0
printf("\nbooted_device = %s\n", booted_device->dv_xname);
#endif
found = 1;
}
if (netboot) {
if (parent != pcidev)
return;