Commit Graph

67 Commits

Author SHA1 Message Date
Alexander Kabaev
0f8a5e9b3f Restore Rev. 1.40 (remove "Keyboard yes/no" printf).
GCC 3.2 overflows boot2 by 12 bytes, this patch brings it back
within the boundaries, with 12 bytes available for future bloat.

Approved by:	obrien
2002-09-01 21:29:10 +00:00
Ruslan Ermilov
d2893b161b Drop support for COPY, -c has been the default mode of install(1)
for a long time now.

Approved by:	bde
2002-07-29 09:40:17 +00:00
Poul-Henning Kamp
cb37d870a6 Revert the part of Kirks UFS2 commit which added divdi3.c and moddi3.c
to libi386, this issue was resolved already in a cleaner way.
2002-06-21 11:00:00 +00:00
Kirk McKusick
1c85e6a35d This commit adds basic support for the UFS2 filesystem. The UFS2
filesystem expands the inode to 256 bytes to make space for 64-bit
block pointers. It also adds a file-creation time field, an ability
to use jumbo blocks per inode to allow extent like pointer density,
and space for extended attributes (up to twice the filesystem block
size worth of attributes, e.g., on a 16K filesystem, there is space
for 32K of attributes). UFS2 fully supports and runs existing UFS1
filesystems. New filesystems built using newfs can be built in either
UFS1 or UFS2 format using the -O option. In this commit UFS1 is
the default format, so if you want to build UFS2 format filesystems,
you must specify -O 2. This default will be changed to UFS2 when
UFS2 proves itself to be stable. In this commit the boot code for
reading UFS2 filesystems is not compiled (see /sys/boot/common/ufsread.c)
as there is insufficient space in the boot block. Once the size of the
boot block is increased, this code can be defined.

Things to note: the definition of SBSIZE has changed to SBLOCKSIZE.
The header file <ufs/ufs/dinode.h> must be included before
<ufs/ffs/fs.h> so as to get the definitions of ufs2_daddr_t and
ufs_lbn_t.

Still TODO:
Verify that the first level bootstraps work for all the architectures.
Convert the utility ffsinfo to understand UFS2 and test growfs.
Add support for the extended attribute storage. Update soft updates
to ensure integrity of extended attribute storage. Switch the
current extended attribute interfaces to use the extended attribute
storage. Add the extent like functionality (framework is there,
but is currently never used).

Sponsored by: DARPA & NAI Labs.
Reviewed by:	Poul-Henning Kamp <phk@freebsd.org>
2002-06-21 06:18:05 +00:00
Poul-Henning Kamp
080ef30b20 Add explicit dependency on ufsread.c 2002-06-05 12:30:45 +00:00
Poul-Henning Kamp
833468e219 Preparation for UFS2 commit:
Factor the ufs reading code out of the i386/boot2 loader so it can
be reused by for instance sparc64.

Sponsored by: DARPA and NAI Labs.
2002-06-05 11:10:38 +00:00
Ruslan Ermilov
475ab3cda6 Align CLEANFILES with revision 1.25 changes. 2002-05-13 16:16:00 +00:00
Bruce Evans
e754a32842 Saved 176 bytes by compiling with -fno-guess-branch-probability. The
default of -fguess-branch-probablility causes time optimizations (?)
like rewriting `if (foo) x++;' as
`if (!foo) goto forth; back: ; ...; forth: x++; goto back;".  This is
pessimizes space especially well on i386's because one short branch
gets converted to 2 long ones.

Removed -fno-align-foo since it is implied by -Os.  Previous commit
messages seem to have overstated the new alignment bugs in gcc.  The
only case that affects boot2 is that -fno-align-functions (or
equivalently -falign-functions=1) actually gives -falign-functions=2.
This is caused by FUNCTION_BOUNDARY being 2 (bytes) instead of 1.
The default case where the optimization level is 1 and no alignment
options are given is more broken.  All alignments are minimal, modulo
the bug in FUNCTION_BOUNDARY.  This is caused by toplev.c setting
defaults too early.

Some hacks in previous commits ar not needed now, but may as well be
kept until gcc is fixed.  The previous on in the Makefile saved 96
bytes of text due to the wrong FUNCTION_BOUNDARY and 32 bytes of data
due to unrelated bloat in the alignment of large objects.  There aren't
even any options to control alignment of data.
2002-05-12 15:45:28 +00:00
Peter Wemm
92948f4701 Save about 60 bytes by #define memcpy __builtin_memcpy and removing
the function we provided.  Restore the Keyboard: yes/no  printf for the
probe diagnostics.  We end up with 40 bytes free.
2002-05-11 21:49:39 +00:00
Peter Wemm
7a163a83da Use a crowbar and duct-tape to make boot2 fit again. This gets it down
to 4 bytes free.  I removed a printf (the Keyboard yes/no) since it is of
marginal value and sed'ed the generated asm output to remove the unwanted
aligns.  There's probably a better way to gain a few extra bytes than
losing the printf.  Shortening strings is probably a better option but this
should get us over the hurdle.
2002-05-11 21:39:59 +00:00
John Baldwin
88f0d73da4 - Axe -mpreferred-stack-boundary=2 as -Os turns this on by default.
- Axe -fdata-sections as turning it on or off makes no difference.  If
  it did make a difference it would serve to bloat boot2 even further with
  extra padding.
- Axe -fforce-addr.  This gets us 32 bytes so we are down to only being
  64-bytes over.

We still can't compile this with gcc 3.1.  The problem seems to be that
the -fno-align-foo options don't actually work.  Comparing the new and
old output it turns out that gcc is 4-byte padding all the functions and
labels and what not despite the passed in arguments thus adding the
unfortunate bloat to boot2.
2002-05-10 04:05:42 +00:00
David E. O'Brien
7571ef5ae3 -ffreestanding is the word for /sys. 2002-05-10 00:53:45 +00:00
Pierre Beyssac
2b9592079f Code cleanup, no functional change.
Patch adapted from PR.

PR:		i386/36015
Submitted by:	thomas@cuivre.fr.eu.org
MFC after:	1 week
2002-04-11 09:21:10 +00:00
Pierre Beyssac
038148d678 Add option -n to i386 boot2 to disallow boot interruption by keypress.
PR:		i386/36016
Submitted by:	Thomas Quinot <thomas@cuivre.fr.eu.org>
Reviewed by:	rnordier
MFC after:	1 week
2002-03-23 19:40:27 +00:00
Ruslan Ermilov
9662d32c73 Implement -m and -p loader(8) "boot" command options in boot2.
(This is more useful for 4.x where boot blocks can still load
kernels, modulo the PR kern/17422.)
2002-03-13 11:03:36 +00:00
Ian Dowse
870fb18bc1 Oops, the previous revision (1.35) broke booting from floppies
because the buffers we use could end up spanning a 64k boundary.
Unfortunately it causes too much bloat (228 -> 72 bytes free) to
just reinstate the old malloc() function.

Instead, define a structure that contains all 4 buffers which must
not cross 64k boundaries. We allocate a 64k-aligned instance in
main() using the magic that was in the old boot2 malloc() function.
This brings the free space down to 168 bytes, but that is still
better than it was before revision 1.35 (136 bytes).

Reported by:	Mike Brancato <funnyguy@digitalsmackdown.net>
Pointy-hat to:	iedowse
2002-01-17 22:39:19 +00:00
Ian Dowse
e9f9046337 Make the i386 boot2 fully blocksize-agnostic, as has already been
done with boot1 on the alpha. We use 4k buffers regardless of the
actual filesystem block size.

Remove the simple malloc() implementation, as it is no longer used.
2002-01-14 19:39:19 +00:00
Ian Dowse
7e9c85d4ce Increase BSIZEMAX from 8k to 16k, so that we can reliably boot from
filesystems with 16k blocks.
2002-01-09 15:46:17 +00:00
Jonathan Lemon
c80bd6e378 Allow the RBX_DUAL flag to appear in bootinfo. 2001-10-23 20:27:05 +00:00
John Baldwin
b0606ca15f Add in a hack to support IBM "El Torito" CD-ROM booting BIOS's which expect
the first sector of the emulated floppy to contain a valid MS-DOS BPB that
it can modify.  Since boot1 is the first sector of boot.flp, this resulted
in the BIOS overwriting part of boot1: specifically the function used to
read in sectors from the disk.

Submitted by:	Mark Peek <mark@whistle.com>
Submitted by:	Doug Ambrisko <ambrisko@ambrisko.com>
PR:		i386/26382
Obtained from:	NetBSD, OpenBSD (the example BPB)
MFC after:	1 month
2001-07-31 19:50:09 +00:00
Robert Nordier
816aa3c0b5 Unset MAINTAINER. 2001-07-21 14:32:47 +00:00
David E. O'Brien
5e6220d9d0 * include/elf.h has been repo copied to include/elf-hints.h, and it no
longer includes machine/elf.h.
* consumers of elf.h now use the minimalist elf header possible.

This change is motivated by Binutils 2.11.0 and too much clashing over
our base elf headers and the Binutils elf headers.
2001-05-02 23:56:21 +00:00
Robert Nordier
ce6a6a0f90 Set MAINTAINER. 2000-10-02 17:23:16 +00:00
John Baldwin
8dfe6fb59c - Inline all the functions that are only called once. This results in a
savings of 68 bytes in boot2.
- Also add a comment warning that you can't remove the empty exit()
  function.
2000-07-06 01:51:27 +00:00
John Baldwin
cbf3fb883e Add in support for EDD to support large disks via LBA. This uses a
method similar to that of the loader to avoid potentially breaking older
drives in that we only use EDD if the desired cylinder is > 1023.
2000-06-26 22:57:16 +00:00
Ruslan Ermilov
5737d0e1d4 Treat \t and \n inside /boot.config as whitespaces.
PR:		19215
2000-06-13 13:07:53 +00:00
John Baldwin
638bac9fc0 Clean up all of the 16-bit assembly code in the x86 bootstrap to work
with the new binutils.  Now that we have a decent assembler, all the old
m4 macros are no longer needed.  Instead, straight assembly can be used
since as(1) now understands 16-bit addressing, branches, etc.  Also,
several bugs have been fixed in as(1), allowing boot0.s to be further
cleaned up.
2000-05-23 12:18:49 +00:00
John Baldwin
2cb6d95d48 Add a missing dependency: boot2 depends on the BTX kernel. 2000-04-11 14:49:13 +00:00
Ruslan Ermilov
a6120246a2 Support the new ata(4) syntax, while providing backward compatibility for wd(4).
Reviewed by:	jkh, msmith, sos
Approved by:	jkh
2000-02-09 19:23:46 +00:00
David E. O'Brien
c8e02dfe73 Add -fdata-sections, which is a new GCC 2.95 optimization. Remove
-fschedule-insns as it wasn't such a big win with 2.95 after all.

Add the *BIG* win "-mpreferred-stack-boundary=2" optimiztion submitted by
Dima.  GCC 2.95 ensures the stack frame is always properly [opitimally]
aligned by surrounding every function call by code simular to
"addl $-12, %esp" / "addl $12, %esp".  Here we need the reduction in space,
with speed not an issue.
1999-11-15 04:23:40 +00:00
David E. O'Brien
cd37fe517b Return this file to its pre-spammed version. Thanks to some new compiler
optimizations, we can go from 3 bytes free with the spammed version, to
279 bytes free with the full version.
1999-11-14 22:17:06 +00:00
David E. O'Brien
cf49270ac3 Enter complier upgrade mode again. We need to cut 169 bytes from this:
Remove some printf() calls, reduce size of buffers, and abbreviate
	some strings.

Hopefully the boot people will fix this spamage after the cut over to
Gcc 2.95.2 as the system compiler.
1999-11-14 00:41:54 +00:00
David E. O'Brien
73de3d0ff7 Turn on the -fforce-addr and -fschedule-insns optimizations. Adding
either one gives us an additional 32 bytes of additional space available
when using EGCS 1.1.2.  With GCC 2.95.2 -fforce-addr gives us 12 more bytes,
and adding -fschedule-insns gives us an additional 4 bytes.
1999-11-13 23:08:46 +00:00
Peter Wemm
c3aac50f28 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
Robert Nordier
50d57a133e Reintroduce LBA (cyl > 1023) support in the bootblocks, enabled by
means of a build option.
1999-07-20 01:19:23 +00:00
Robert Nordier
bc53095dd4 Fix use of e_phoff in place of e_phnum. 1999-06-19 20:50:38 +00:00
Robert Nordier
0e5731f9f4 Fix damage introduced in previous commit. 1999-04-05 07:36:30 +00:00
Robert Nordier
bf0eae60c5 Optimize better for space.
Thanks to: jdp
1999-04-05 07:24:51 +00:00
David E. O'Brien
df5ee53868 Remove the string ">>> FreeBSD/i386 BOOT". I need to reduce the size of
boot2 by 16 bytes.  I expect this to be temperary until the boot2 authors
can do the proper fix.
1999-04-04 21:15:41 +00:00
Joerg Wunsch
9859e703f6 Make <DEL> an alternative rubout character for command input; many
serial terminals use this as their default rubout key.
1999-03-31 08:28:42 +00:00
Robert Nordier
391911b768 Check size of partition before using it. 1999-01-29 03:36:42 +00:00
Mike Smith
5d3d992565 Fill in the bi_bios_dev field in the bootinfo struct; the loader doesn't
guess this value well in anything other than the simplest of situations.
1999-01-24 00:10:10 +00:00
Robert Nordier
726c0943c0 Drop boot.help support. 1999-01-11 11:36:03 +00:00
Robert Nordier
c03fa7f977 Use etc/make.conf settings for serial port and speed.
Submitted by: rvb
Reviewed by: bde
1999-01-10 14:48:05 +00:00
Peter Wemm
c03b24b2d8 Damn, I thought I had committed this already, but it seems not.
Move the relocated boot1 and arg transfer space from 0x600/0x800 to
0x700/0x900.  In theory this should make no difference, apart from the fact
that Buslogic controllers happen to use a few bytes at 0x600 for some sort
of scratch space for it's int 0x13 hook (!!!), causing the machine to crash
badly when the boot2 code makes it's callbacks into boot1 for disk IO.

Submitted by:	Robert Nordier <rnordier@freebsd.org>
1999-01-10 13:29:52 +00:00
Robert Nordier
0293eac42c Prevent boot.config being parsed more than once. 1998-11-08 18:37:28 +00:00
Robert Nordier
7ac90f7d65 Drop the familiar 'text=xxxx data=xxxx bss=xxxx ...' display while
loading.  This eliminates noise when loading boot/loader; and when
loading a kernel, they generally flash by too fast to be
intelligible anyway.
1998-11-08 18:29:29 +00:00
Robert Nordier
9888bdcd29 boot1: Eliminate EDD detection and optional use of disk packet
interface.  Do some general consistency fixes and space optimizations.
Use of some freed-up space to defend against possible BIOS misfeatures.

boot2: Revise disk read interface to provide for boot1 changes.  Free
up space for this.
1998-11-08 15:36:35 +00:00
Robert Nordier
548bf5dd17 Make use of BIOS int 0x13 extensions configurable, and disabled
by default.
1998-11-05 20:52:25 +00:00
Robert Nordier
c589107988 biosboot compatibility fix: change behavior of backspace in getstr().
Noticed by: abial

Optimize away a few bytes to make space for the above.
1998-10-27 20:16:36 +00:00