- Copy stable/10@296371 to releng/10.3 in preparation for 10.3-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.3.
- Update default pkg(8) configuration to use the quarterly branch.

Approved by: re (implicit)

MFC 292682:
Fix remaining direct tests of the carry flag in the v86 %eflags via a
magic number to use V86_CY() instead. These should have been fixed as
part of the cleanup in r226746 but were missed.

The md5 sums of the object files were unchanged, so there should be no
functional change.

PR: 205424
Submitted by: Alexander Kuleshov <kuleshovmail@gmail.com>

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Change <sys/diskpc98.h> to not redefine the same symbols that are
being defined in <sys/diskmbr.h>. Instead give the symbols here a
"PC98_" prefix. This way, both <sys/diskmbr.h> and <sys/diskpc98.h>
can be included in the same C source file.

The renaming is trivial. The only gotcha is that DOSBBSECTOR is
also redefined from 0 to 1. This because DOSBBSECTOR was always
used in conjunction with an addition of 1. The PC98_BBSECTOR symbol
is defined as 1 and the expression is simplified.

Note: it is not believed that ports are seriously impacted; or at
all for that matter.

Approved by: nyan@

Don't pad disk partition sizes with leading zeros. This was already
fixed in a different way by the new disk code used for other
platforms.

MFC after: 1 week

i386 boot: consolidate MAXBDDEV definition

MFC after: 1 month

Fix debug messages of bd_io().

MFC after: 1 week

Merge the missing changes from i386.
Teach the loader about the FAT partitions.

Use the common PC98_MID_* defines instead of a magic number.

MFi386: revision 1.55.

Tweak the verbose disk printing a bit.

MFi386: part of 1.52

Split the pc98_partition specific routine in bd_opendisk()
into bd_open_pc98().

MFi386: part of revision 1.51

Rework the read/write support in the bios disk driver some to cut down
on duplicated code.
- All of the bounce buffer and retry logic duplicated in bd_read() and
bd_write() are merged into a single bd_io() routine that takes an
extra direction argument. bd_read() and bd_write() are now simple
wrappers around bd_io().

MFi386: revision 1.50

Reindent the read/write code of bd_realstrategy() so it is more readable.

Slightly cleanup the 'bootdev' concept on x86 by changing the various
macros to treat the 'slice' field as a real part of the bootdev instead
of as hack that spans two other fields (adaptor (sic) and controller)
that are not used in any modern FreeBSD boot code.

MFC after: 1 week

Extend struct devdesc with a unit field, called d_unit. Promote the
device (kind) specific unit field to the common field. This change
allows a future version of libefi to work without requiring anything
more than what is defined in struct devdesc and as such makes it
possible to compile said version of libefi for different platforms
without requiring that those platforms have identical derivatives
of struct devdesc.

MFi386: revision 1.46.

Remove ifdef PC98.

Merged from libi386/biosdisk.c revisions 1.37 and 1.41.

Fix another beak.

Seen by: pjd

Unspam sys/boot, the dev_t commit should not have touched these.

Spotted by: peter

My new keyboard can't spell.

Do the dreaded s/dev_t/struct cdev */
Bump __FreeBSD_version accordingly.

Premptively fix GCC3.4 issue: add break; after empty default: clauses.

PR: 65493
Submitted by: Pawel Worach <sajd@telia.com>

Use __FBSDID().
Also some minor style cleanups.

Libdisk does not need to include <sys/diskslice.h> any more.

Move the remaining bits of <sys/diskslice.h> to <i386/include/bootinfo.h>

Move i386/pc98 specific bits from <sys/reboot.h> to
<i386/include/bootinfo.h> as well.

Adjust includes in sys/boot accordingly.

Use NDOSPART instead of NEXTDOSPART.

Use NEXTDOSPART instead of MAX_SLICES.

Add SCSI MO device support.

Submitted by: Kawanobe Koh <kawanobe@st.rim.or.jp>

Rename the dos_partition structure for pc98 to pc98_partition.

Added '#include <sys/diskpc98.h>'.

Submitted by: kawanobe@st.rim.or.jp (Kawanobe Koh)

MFi386: revision 1.35 (Add support for writing to BIOS disks)

Update to C99, s/__FUNCTION__/__func__/,
also don't use ANSI string concatenation.

Merged from the following changes.

sys/boot/i386/btx/btx/Makefile 1.9
sys/boot/i386/btx/btx/btx.s 1.23
sys/boot/i386/libi386/biosdisk.c 1.32 and 1.33
sys/boot/i386/libi386/biosmem.c 1.5
sys/boot/i386/libi386/comconsole.c 1.8
sys/boot/i386/libi386/gatea20.c 1.3
sys/boot/i386/libi386/time.c 1.4
sys/boot/i386/libi386/vidconsole.c 1.13
sys/boot/i386/loader/Makefile 1.48
sys/boot/i386/loader/main.c 1.22

Merged from sys/boot/i386/libi386/biosdisk.c revision 1.31.

Sync with sys/boot/i386/libi386/biosdisk.c revision 1.30.

Synced with following files:
src/sys/boot/i386/Makefile.inc 1.1
src/sys/boot/i386/btx/btx/btx.s 1.15
src/sys/boot/i386/btx/btxldr/Makefile 1.8
src/sys/boot/i386/btx/btxldr/btxldr.s 1.9
src/sys/boot/i386/libi386/biosdisk.c 1.29
src/sys/boot/i386/loader/Makefile 1.42
src/sys/boot/i386/loader/main.c 1.18
(entry point address of loader was not changed.)

Reviewed by: nyan

Sync with sys/boot/i386/libi386/biosdisk.c revision 1.27 and 1.28.

Submitted by: Kaho Toshikazu <kaho@elam.kais.kyoto-u.ac.jp>

Fixed to get the BIOS geometry.

- Supported the bd_getbigeom function and use this function to get BIOS
geometry.
- Use i386/libi386/bootinfo.c instead of pc98/libpc98/bootinfo.c.

Submitted by: IMAI Takeshi <take-i@ceres.dti.ne.jp>

Remove BAD144 support, it has already been disabled for some time.

Cosmetic changes.

- Fixed DMA 64k boundary problem.
- Test the processor flag to detect disk I/O BIOS errors.

Submitted by: IMAI Takeshi <take-i@ceres.dti.ne.jp>

$Id$ -> $FreeBSD$

- Don't assume that SCSI ID numbers of HDD units are contiguous. That
is, don't assume that SCSI ID corresponds to a unit number of da
device. Unit number of da device is provided by 2nd stage loader
and 3rd stage loader now use it.
- Fix drive letter to display.

Submitted by: IMAI Takeshi <take-i@ceres.dti.ne.jp>

Provides discontinuous unit number support to make external FDD
bootable on 1 FDD PC98 machines. (When an external FDD unit is
installed, unit numbers become discontinuous.)

Submitted by: IMAI Takeshi <take-i@ceres.dti.ne.jp>

Make loader be able to load 1.2MB fd on machines w/ 1.44MB fdd.

Sumbmitted by: IMAI Takeshi <take-i@ceres.dti.ne.jp>

When SCSI IDs are not contiguous, the loader could not find correct
unit number for da device. This commit fixes this problem.

Submitted by: IMAI Takeshi <take-i@ceres.dti.ne.jp>

PC98 version of new boot loader. Because boot2 has not yet ported,
files in boot2 directory are copies from legacy biosboot.

Submitted by: IMAI Takeshi <take-i@ceres.dti.ne.jp>