92 Commits

Author SHA1 Message Date
jhb
4c2a550344 Revert MEM_USR back to 0xa000 for BTX clients. Instead, adjust boot2
to run at 0xc000 by changing its virtual start address from 0x1000 to
0x2000.

Tested by:	phk
2002-10-08 18:19:02 +00:00
phk
07c608aac1 Now that ufsread.c doesn't do 64bit divide remainder operations,
don't bother with libkern.

Sponsored by:	DARPA & NAI Labs.
2002-10-08 15:49:35 +00:00
phk
a2f1fdc5bf Save a couple of bytes by not returning ints nobody care about.
Sponsored by:	DARPA & NAI labs
2002-10-08 15:48:43 +00:00
green
7a416624c8 Reinstate rev 1.36 with an important line that got missed. Note this
also improves the "random undocumented offsets into various memory
spaces" a little bit.
2002-10-08 12:09:16 +00:00
phk
ecc00e796c Remove unused TYPE_WD and TYPE_WFD. 2002-10-08 10:17:16 +00:00
phk
b8d521263b Correctly calculate dmadat: We need to take the address of _end, it's
contents is irrelevant and likely to be zero;

This doesn't change the resultant value, but it does save a couple of bytes
because &_end is constant.
2002-10-08 10:15:42 +00:00
phk
6f7830c860 Unbreak boot2 by backing out rev 1.36 to Makefile, which does not
work as advertised:

	bang# pwd
	/bang/src/sys/boot/i386/boot2
	bang# make clean >& /dev/null
	bang# cvs -q update -r 1.35 Makefile >& /dev/null
	bang# make >& /dev/null
	bang# cat /usr/obj/`pwd`/boot2.h
	#define XREADORG 0x725
	bang# cvs -q update -r 1.36 Makefile > & /dev/null
	bang# make clean > & /dev/null
	bang# make > & /dev/null
	bang# cat /usr/obj/`pwd`/boot2.h
	#define XREADORG 0x25
	bang#
2002-10-08 07:52:28 +00:00
phk
24fb0bb017 Save four bytes by shortening a string two chars.
Sponsored by:	DARPA & NAI Labs.
2002-10-08 07:06:24 +00:00
green
6c65d531e9 Correct a bug in adding 0x700 to a number. 2002-10-07 22:21:16 +00:00
phk
881f1b527c Conditionalize the number of sectors loaded by boot1.s on UFS1/UFS12.
Conditionalize the "XX bytes left" checks reference on UFS1/UFS12.

Conditionally build the necessary 64bit math for boot2 if UFS12.

Sponsored by:	DARPA & NAI Labs.
2002-10-07 21:36:06 +00:00
phk
6cc4e6467c Change the comment character from # to // in boot1.s and run
it through CPP so we can conditionalized things.

Sponsored by:	DARPA & NAI Labs
2002-10-07 20:56:09 +00:00
phk
87986ee87a Correctly compensate for both offset and unoffset on-disk BSD disklabels.
Sponsored by:	DARPA & NAI Labs.
2002-10-07 13:11:28 +00:00
phk
1270e840d8 Move MEM_USR a page upwards to make space for larger UFS1 boot2.
Load 4 sectors more than we used to.  This is harmless overhead for
the UFS1_ONLY case, but sufficient for boot2(UFS1+2).

Sponsored by:	DARPA & NAI Labs
2002-10-07 12:15:11 +00:00
phk
c91ffdd939 Move the definition of UFS1_ONLY into the Makefiles where it belongs.
Sponsored by:	DARPA & NAI Labs.
2002-10-07 08:09:20 +00:00
iwasaki
f42743371e Don't call INT 12H anymore in boot program.
Many recent machine have a broken INT 12H (Get base memory size)
implementation and boot program stops if INT 12H is called.

This commit should solve the problem at very first step of FreeBSD
installation occurred on newer some machines.

Reviewed by:	bde, jhb
MFC after:	1 week
2002-10-01 19:31:09 +00:00
phk
19150ba4f8 Split MBR and PC98 on-disk sliceformats out from disklabel.h, step 1:
Peter had repocopied sys/disklabel.h to sys/diskpc98.h and sys/diskmbr.h.

These two new copies are still intact copies of disklabel.h and
therefore protected by #ifndef _SYS_DISKLABEL_H_ so #including them
in programs which already include <sys.disklabel.h> is currently a
no-op.

This commit adds a number of such #includes.

Once I have verified that I have fixed all the places which need fixing,
I will commit the updated versions of the three #include files.

Sponsored by:   DARPA & NAI Labs.
2002-10-01 07:24:55 +00:00
kan
ae4b45674c 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
ru
a8adf98c82 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
phk
25b1090f3a 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
mckusick
88d85c15ef 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
phk
12c36bfb94 Add explicit dependency on ufsread.c 2002-06-05 12:30:45 +00:00
phk
7d924377ca 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
ru
825bd47b27 Align CLEANFILES with revision 1.25 changes. 2002-05-13 16:16:00 +00:00
bde
d526f40e5c 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
4daf43a4a4 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
f9b8106499 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
jhb
446a06fc8c - 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
obrien
b12dc54a67 -ffreestanding is the word for /sys. 2002-05-10 00:53:45 +00:00
pb
bfa5faab11 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
pb
67873bb7a8 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
ru
bb48189d63 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
iedowse
8ff94b6175 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
iedowse
d40b4fe11b 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
iedowse
ae08498603 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
peter
364766b6e6 Fix the ILLEGAL fdisk table that is there for supporting "dangerously
dedicated" mode.  This was specifying that there are 256 (illegal!)
heads on the disk.  If bioses store that in a byte, and it gets truncated
to 0, then that almost certainly causes the infamous divide-by-zero
nightmare.

This is also most likely the reason why the Thinkpad T20/A20 series
were locking up when FreeBSD was installed.  This is also the most likely
reason why a boot1 being present causes an IA64 box to lock up at boot.
(removing the "part4" stuff from boot1.s fixes the IA64 boxes and would
most likely have fixed the T20/A20 and some TP600E series thinkpads)
2001-11-01 06:19:32 +00:00
jlemon
66b3b14455 Allow the RBX_DUAL flag to appear in bootinfo. 2001-10-23 20:27:05 +00:00
jhb
198dfe1ce3 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
rnordier
ba4e5273cd Unset MAINTAINER. 2001-07-21 14:32:47 +00:00
obrien
538e761e02 * 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
rnordier
56de11b718 Set MAINTAINER. 2000-10-02 17:23:16 +00:00
jhb
1bc7f5bab2 - 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
jhb
037bed528d Doh. The disklabel is not 0x200 bytes of zeros, but it is 0x200 bytes long. 2000-07-06 00:29:40 +00:00
jhb
06878d47d6 Clarify the comments in here a bit. The first sector of boot2 is not just
zeros, it is actually the disklabel itself.  boot2.ldr is simply a
placeholder in the boot2 binary.
2000-07-06 00:22:50 +00:00
jhb
cf55ba84f4 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
jhb
3cb8680a56 Comment this bad boy. Hopefully the next person that comes along won't
have to spend a few hours reading the code to figure all this out.
2000-06-19 22:50:46 +00:00
ru
b2d0212ee6 Treat \t and \n inside /boot.config as whitespaces.
PR:		19215
2000-06-13 13:07:53 +00:00
jhb
5053ee0d6c 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
jhb
2ac8d6674b Add a missing dependency: boot2 depends on the BTX kernel. 2000-04-11 14:49:13 +00:00
ru
4b1fee2e59 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
obrien
48ebb77e0e 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