Date: Sun, 4 Oct 1998 11:21:45 +0200 (METDST) From: Michael Class <michaelc@hpbbse.bbn.hp.com> To: current@FreeBSD.ORG Subject: Problem with 3-stage bootloader Message-ID: <Pine.HPP.3.94.981004112111.21393A-100000@hpbbse.bbn.hp.com>
next in thread | raw e-mail | index | archive | help
Hello,
I was just trying to use the new 3-stage bootloader.
It failed for my setup. To me it looks like it will only work,
if the FreeBSD slice is the first in the partition-table of a disk.
I can make it to work with the following patch (not meant as a
correct solution, but to give you an idea, of what the reason for
the failure is). Basically only the first slice-table entry is copied,
but afterwards the code assumes that all 4 entries are in memory.
*** biosdisk.c Sun Oct 4 11:08:12 1998
--- biosdisk.c.orig Sun Oct 4 11:07:22 1998
***************
*** 78,84 ****
#define BD_MODEEDD3 0x2
#define BD_FLOPPY (1<<2)
struct disklabel od_disklabel;
! struct dos_partition od_parttab[4];
#define BD_LABELOK (1<<3)
#define BD_PARTTABOK (1<<4)
};
--- 78,84 ----
#define BD_MODEEDD3 0x2
#define BD_FLOPPY (1<<2)
struct disklabel od_disklabel;
! struct dos_partition od_parttab;
#define BD_LABELOK (1<<3)
#define BD_PARTTABOK (1<<4)
};
***************
*** 288,294 ****
sector = 0;
goto unsliced; /* may be a floppy */
}
! bcopy(buf + DOSPARTOFF, &od->od_parttab, sizeof(struct dos_partition) * 4);
dptr = &od->od_parttab;
od->od_flags |= BD_PARTTABOK;
--- 288,294 ----
sector = 0;
goto unsliced; /* may be a floppy */
}
! bcopy(buf + DOSPARTOFF, &od->od_parttab, sizeof(struct dos_partition));
dptr = &od->od_parttab;
od->od_flags |= BD_PARTTABOK;
After this patch I can boot an aout-kernel on my machine. Unfortunately
I am still failing on an ELF-Kernel. I get immediately dropped in the
debugger, but a stacktrace gives only garbage back.
Michael
___________________________________________________________________________
Michael Class E-Mail: michael_class@hp.com
E-Business Solutions Center Phone: +49 7031 14-3707
EBSO-SERC Fax: +49 7031 14-4196
___________________________________________________________________________
Hewlett-Packard GmbH, PO Box 1430, 71004 Boeblingen
Sitz der Gesellschaft: Böblingen, Amtsgericht Böblingen HRB 4081
Geschäftsführer: Jörg Menno Harms (Vorsitzender), Heribert Schmitz,
Rudi Speier, Fritz Schuller, Hans-Günter Hohmann
___________________________________________________________________________
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.HPP.3.94.981004112111.21393A-100000>