an iso-image created from the resulting release won't boot. I don't
know if this change is the source of that, but one more knowledgable
than I about the x86 booter needs to look at this, and I don't want
the waters muddied any more than necessary.
Support 32bit addresses >64k as valid on bios calls.
Move stack for dosboot and biosboot to >64 so stack doesn't hit data.
Use disk sector number passed by mbr code to select default partition
(the mbr code doesn't do this yet).
NB only biosboot and dosboot have been tested so far.
(changes approved by christos and fvdl)
is supported on later IBM PS/2 models; this is necessary to detect memory
over 64MB
thanks go to Pavel Cahyna for testing on his IBM PS/2 machine with 128MB
bump biosboot version to 2.15
to read sector 18, and fallback to 1.44MB drive geometry if that fails.
This allows to boot from 1.44MB floppy disk in 2.88MB drive.
Tested with 2.88MB drive in IBM PS/2 model 95 donated
by 'Yokotashi' <lhc at kanal ucw cz> and Pavel Cahyna
<pavel.cahyna at st ms mff cuni cz>
Bump biosboot version.
Fixes PR kern/3418 by Keith Moore.
Change okayed by Frank van den Linden.
0x13 Function 0) after a read error. This is a requirement mentioned
in most BIOS documentation.
This answers PR 18591.
Incidentally, on the Soekris Engineering net45x1 single-board
computer, this fixes a bug where the bootloader corrupts the kernel
while loading it from certain varieties of CompactFlash card
(especially varieties identified by NetBSD as <TOSHIBA THNCF064MBA>).
via the Configuration Port, so restructure the code a little
to allow for them, and list at least one other system that does
(anything based on AMD Elan SC520).
XXX We don't actually check for Elan SC520 yet.
user; the boot blocks don't work when built with e.g. -mcpu=i486
(probably due to how branches are aligned in that case, causing
segment boundaries to be crossed).
there are other architectures (e.g. IA64) which also use PXE.
* Get the console right in pxeboot, from Andreas Gustafsson.
* Add a "com0" version of pxeboot, to address the same issue that
biosboot_com0 addresses.
* Add separate directories for the individual netboot ROMs and
always build them.
* Each bootloader Makefile explicitly specifies the start file
and link address it wishes to use.
* genprom becomes a proper host program.
* Make sure all generated files get cleaned up.
* Set BINDIR in Makefile.inc
* Add compressed image support to pxeboot.
* Make pxeboot use the default serial console speed (9600).
written by Alfred Perlstein, Paul Saab, John Baldwin for FreeBSD.
Still needs some work, but this will load a kernel on a Soekris net4501.
Many thanks to Frank van der Linden and his simulator wizardry for
helping me debug the low-level startup code.
