HEADS UP! boot2 problems
Jeremy Chadwick
freebsd at jdc.parodius.com
Thu Aug 5 10:34:15 PDT 2004
All,
This commit works great. I also tested boot0sio (just for fun), works
fine as well.
Greatly appreciated; and a big thanks to Matt Dillon (as usual). :-)
--
| Jeremy Chadwick jdc at parodius.com |
| Parodius Networking http://www.parodius.com/ |
| UNIX Systems Administrator Mountain View, CA, USA |
| Making life hard for others since 1977. |
On Thu, Aug 05, 2004 at 06:27:28AM +0000, Alexander Kabaev wrote:
> On Fri, Jul 30, 2004 at 03:21:19PM +0000, Alexander Kabaev wrote:
> > On Thu, Jul 29, 2004 at 08:39:43PM -0600, Scott Long wrote:
> > > All,
> > >
> > > The GCC 3.4 import seems to have broken the boot2 loader on at least
> > > i386. This doesn't affect normal world and kernel builds and installs,
> > > but does affect writing new bootblocks via the disklabel program. You
> > > should refrain from doing this until it gets fixed. It's being looked
> > > into right now.
> > >
> > > Scott
> >
> > Commit below made boot2 usable again.
>
> As suggested by Matt Dillon, the problems were caused by imcompletely
> zeroed out BSS. I merged approproate fixes from DragonflyBSD in commit
> below. Success/failure reports from people affected are appreciated.
>
> kann 2004-08-05 06:00:05 UTC
>
> FreeBSD src repository
>
> Modified files:
> sys/boot/i386/boot2 boot1.S
> sys/boot/i386/btx/lib btxcsu.s
> Log:
> Move boot2 BSS zeroing into btx startup code out of boot1. boot1 does not
> have clear idea on boot2 BSS size and leaves portion of it not zeroed out.
> btxcsu.s is in much better position for this job.
>
> Obtained from: DragonflyBSD (with minor adjustments)
>
> Revision Changes Path
> 1.29 +0 -4 src/sys/boot/i386/boot2/boot1.S
> 1.4 +9 -1 src/sys/boot/i386/btx/lib/btxcsu.s
>
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