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a6bef20793
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48 Commits

Author SHA1 Message Date
John Baldwin
a6bef20793 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
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
John Baldwin
35bdac5bbd 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
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
05c7fdda18 In the event of a disk error, boot2 is expecting an error 
code to be returned: give it one
 1999-01-13 23:30:07 +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
21ffb6774a Revise error messages. 1998-11-11 08:56:17 +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
9244e1a412 Avoid interruptions while talking to keyboard controller. 1998-10-27 20:19:24 +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
Robert Nordier
1a8efde980 Make serial port, data format, and bps configurable. 1998-10-20 20:20:48 +00:00
Robert Nordier
ae99ddc79e Fix some glitches in the input routine: 
Don't display a \b if not acting on it.
Don't process binary zero chars (which result from pressing function
keys, etc. on the PC).
 1998-10-17 11:25:05 +00:00
Robert Nordier
918ddbed16 Having probed the keyboard, turn off the -P flag. 1998-10-17 10:35:15 +00:00
Robert Nordier
93d51dcaf9 Treat all options as toggles (ie. -c -c is the same no -c). Since 
the boot.config settings are persistent, this seems to provide a
useful override capability, and should break only on broken
boot.config's.

Output a cosmetic newline if booting with no input.
 1998-10-17 09:50:09 +00:00
Robert Nordier
3044a22097 biosboot compatibility fix: 
If we have a boot.config command, display it.
 1998-10-17 09:16:01 +00:00
Robert Nordier
7fa25d805a biosboot compatibility fix: 
Read boot.help before parsing boot.config.  We were parsing
boot.config first, which could result in boot.help being read
from a different location (or not found), which would probably
just cause surprise, without being useful.
 1998-10-17 09:01:13 +00:00
Robert Nordier
67ac585edf Fix path to sio.s 1998-10-15 22:08:13 +00:00
Robert Nordier
da55c91100 Add serial, dual, and probe-keyboard support. 1998-10-15 20:04:21 +00:00
Robert Nordier
ee2e4f9b32 Fix btx include path. 1998-10-14 01:53:56 +00:00
Robert Nordier
59ea046e5d Include <bsd.prog.mk>. Add install target (to /boot for now). 1998-10-14 00:24:16 +00:00
Robert Nordier
757ee5cca9 Fix flow of control after directory listing; enable EDD support; 
cosmetics.
 1998-10-13 23:43:38 +00:00
Robert Nordier
b2848194f5 Make v86.ctl default more explicit; simplify read error-handling; 
twiddle.
 1998-10-13 23:00:47 +00:00
Robert Nordier
c71b9b3c24 Adjust NDEV value. 
Optimize reading of system time.
 1998-10-13 22:17:05 +00:00
Robert Nordier
fd4afc6487 Change to a 15-sector boot2. 
Refine slice-handling.
 1998-10-13 21:35:42 +00:00
Robert Nordier
8f65b6a695 Don't use an absolute path to objcopy. 
Noticed by: Scott Mace <smace@intt.org>
 1998-10-13 18:29:18 +00:00
Robert Nordier
0ad50c1c9d Improve drive recognition and handling. 1998-10-13 17:41:06 +00:00
Robert Nordier
4d8eda2252 New boot blocks: support for /boot/loader; a.out & ELF; cyl > 1023; 
multiple 0xa5 slices; etc.
 1998-10-12 21:16:26 +00:00