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Commit Graph

608 Commits

Author SHA1 Message Date
John Baldwin
4b9657e974 Optimize the int 15/87 handler for space to shave another 16 bytes off of
BTX (and thus boot2):
- Don't bother saving %eax, %ebx, or %ecx as it is not necessary.
- Use a more compact sequence to load the base value out of a GDT entry
  by loading the contiguous low 24 bits into the upper 24 bits of %eax,
  loading the high 8 bits into %al, and using a ror to rotate the bits
  (2 mov's and a ror) rather than loading the pieces in smaller chunks
  (3 mov's and a shl).
- Use movzwl + leal instead of movl + movw + shll + addl.
- Use 'xchgl %eax,%foo' rather than 'movl %eax,%foo' for cases where
  it's ok to trash %eax.  xchgl %eax, foo is a 1-byte opcode whereas the
  mov is a 2-byte opcode.
- Use movzwl rather than xorl + movw.

MFC after:	1 week
2006-09-28 19:38:02 +00:00
John Baldwin
c4f7c44bb3 Add an 'smap' command that dumps out the BIOS SMAP.
MFC after:	1 week
2006-09-28 19:07:13 +00:00
John Baldwin
add92b34d1 A couple of simple tweaks that trim BTX by 6 bytes. Since BTX is
16-byte aligned within boot2 however, this actually trims boot2 by 16
bytes.
2006-09-28 16:30:36 +00:00
Ruslan Ermilov
2d78e8c5f1 Add -march=i386 to fix amd64 build by generating the same code
as i386 would do.
2006-09-28 10:02:04 +00:00
John Baldwin
3ea944faa0 Emulate moving cr0, cr2, cr3, or cr4 into any i386 general register
rather than just emulating mov cr0, eax.  This fixes some Compaq/HP BIOS
with DMA (as the BIOS tried to read cr3 so it could translate addresses
if paging was enabled).

MFC after:	1 week
2006-09-27 19:32:26 +00:00
Ruslan Ermilov
b0e014af29 - Include <sys/reboot.h> to get the RB_* defines.
- Make the PROBE_KEYBOARD option better resemble the -P option in
  boot2, i.e., if keyboard isn't present then boot with both
  RB_SERIAL and RB_MULTIPLE set.

Reviewed by:	jhb
2006-09-05 19:28:03 +00:00
Yaroslav Tykhiy
776fc0e90e Commit the results of the typo hunt by Darren Pilgrim.
This change affects documentation and comments only,
no real code involved.

PR:		misc/101245
Submitted by:	Darren Pilgrim <darren pilgrim bitfreak org>
Tested by:	md5(1)
MFC after:	1 week
2006-08-04 07:56:35 +00:00
Ian Dowse
9c0ce099e6 Increment the disk block offset after writing, not before. This
fixes filesystem corruption when nextboot.conf is located after
cylinder 1023. The bug appears to have been introduced at the time
bd_read was copied to create bd_write.

PR:		bin/98005
Reported by:	yar
MFC after:	1 week
2006-05-31 09:05:49 +00:00
John Baldwin
cde0d87b26 Restore the pre-5.x behavior of only beeping if the user makes a bad
selection and not always beeping on startup.  The two bytes for the extra
'jmp' instruction were obtained by removing recognition of BSD/OS
partitions.

Requested by:	many
Tested by:	subset of many
Head nod:	imp, keramida
MFC after:	2 weeks
2006-05-03 13:43:46 +00:00
John Baldwin
b5fd832d94 Use PTOV() to convert physical addresses to appropriate virtual addresses
in the loader when searching for the ACPI RSDP.  (The loader runs in a flat
mode with va 0 == pa 0xa000.)
2006-04-25 18:42:22 +00:00
Maxim Sobolev
e101181393 Merge in timeout into A20-enable routine from cdboot/boot1.
MFC after:	1 day
2006-04-11 20:53:49 +00:00
John Baldwin
31062da1b0 Drop the gateA20() function in the loader as it is unused. All the other
boot loaders that load the loader already handle A20.  In fact, they are
required to do so in order to setup the environment that btxldr expects.
2006-04-11 20:11:30 +00:00
John Baldwin
a115c84d58 Minor whitespace tweak. 2006-04-11 20:09:42 +00:00
John Baldwin
3793634041 Tweak comment. 2006-04-11 17:36:08 +00:00
John Baldwin
70e040dfcf Use the proper condition to determine that we matched an filename.
Otherwise, we could match on a filename that had the wrong last character
(such as /boot/loaded instead of /boot/loader).

PR:		kern/95625
Submitted by:	Oliver Fromme <olli@secnetix.de>
MFC after:	1 month
2006-04-11 17:26:54 +00:00
Maxim Sobolev
cd86367a5a When enabling A20 put upper limit on amount of time we wait for the keyboard
controller to get ready (65K x ISA access time, visually around 1 second).
If we have wait more than that amount it's likely that the hardware is a
legacy-free one and simply doesn't have keyboard controller and doesn't
require enabling A20 at all.

This makes cdboot working for MacBook Pro with Boot Camp.

MFC after:	1 day
2006-04-11 04:39:29 +00:00
Ruslan Ermilov
e1fe3dba5c Reimplementation of world/kernel build options. For details, see:
http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html

The src.conf(5) manpage is to follow in a few days.

Brought to you by:	imp, jhb, kris, phk, ru (all bugs are mine)
2006-03-17 18:54:44 +00:00
Jung-uk Kim
07b4d1cc39 Export SMBIOS serial numbers by default. To turn it off, use
'BOOT_HIDE_SERIAL_NUMBERS' knob.

Suggested by:	ceri
2006-03-14 19:02:00 +00:00
Jung-uk Kim
1c9e617c34 Micro-optimize invalid UUID check. 2006-03-10 23:33:27 +00:00
Jung-uk Kim
65796b26b3 - Implement serial numbers, UUID, and asset tag (turned off by default).
Use 'BOOT_SENSITIVE_INFO=YES' variable to turn them on.
- Use 'uint*_t' instead of 'u_int*_t', correct compilation warnings, and
update copyright while I am here.
2006-03-09 22:49:44 +00:00
Maxim Sobolev
e4f5866fd5 For the cases when loading bzip2-compressed kernels enabled use last
3MB of physical memory for heap instead of range between 1MB and 4MB.
This makes this feature working with PAE and amd64 kernels, which are
loaded at 2MB. Teach i386_copyin() to avoid using range allocated by
heap in such case, so that it won't trash heap in the low memory
conditions.

This should make loading bzip2-compressed kernels/modules/mfs images
generally useable, so that re@ team is welcome to evaluate merits
of using this feature in the installation CDs.

Valuable suggestions by:	jhb
2005-12-21 02:17:58 +00:00
Maxim Sobolev
f668cd5df7 If LOADER_BZIP2_SUPPORT is defined allocate heap in the 1MB-4MB range to
provide enough room for decompression (up to 2.5MB is necessary). This
should be safe to do since we load i386 kernels after 8MB mark now, so
that 16MB is the minimum amount of RAM necessary to even boot FreeBSD.

This makes bzip2-support  practically useable.
2005-12-19 09:26:42 +00:00
Maxim Sobolev
915dad0e92 Long-long time ago, when the trees were large and memory expensive amount of
memory directly available to loader(8) and friends was limited to 640K on i386.
Those times have passed long time ago and now loader(8) can directly access
up to 4GB of RAM at least theoretically. At the same time, there are several
places where it's assumed that malloc() will only allocate memory within
first megabyte.

Remove that assumption by allocating appropriate bounce buffers for BIOS
calls on stack where necessary.

This allows using memory above first megabyte for heap if necessary.
2005-12-19 09:00:11 +00:00
Ruslan Ermilov
6e7a7ba194 Consistently use OPT_* macros to test/set boot options. 2005-11-03 07:35:36 +00:00
Scott Long
fe8388fec2 Add back some bits. 2005-10-30 05:41:42 +00:00
Jung-uk Kim
529bc4bf80 Export processor socket information. New environment variables are:
smbios.socket.enabled:		number of enabled sockets
smbios.socket.populated:	number of populated sockets
2005-10-18 20:03:31 +00:00
Maxim Sobolev
a9c76d92d2 Re-implement rev.1.76 with respect to the code size. 2005-10-16 20:22:36 +00:00
Maxim Sobolev
6267ee870d Backout previous commit - for some reason it overflows space constrains on
amd64. Better version will follow.
2005-10-16 19:49:44 +00:00
Maxim Sobolev
50d89fc56a Add new option `q', which makes second stage loader quiet unless autoboot
is disabled or fails.

MFC after:	1 week
2005-10-16 01:55:35 +00:00
Ruslan Ermilov
fddd9c1d2f Cause all flags passed by boot2 to set the respective loader(8)
boot_* variable.  The end effect is that all flags from boot2
are now passed to the kernel.
2005-09-22 15:14:13 +00:00
Ruslan Ermilov
4750e08f7b Add loader(8) variables for RB_DFLTROOT, RB_MUTE, and RB_PAUSE:
"boot_dfltroot", "boot_mute", and "boot_pause" respectively.
2005-09-22 15:06:58 +00:00
Ruslan Ermilov
5272ce4796 - RBX_MASK wasn't updated when RB_PAUSE was changed from 0x40000
to 0x100000 in rev. 1.67.

- NOPT wasn't updated (decremented) in previous revision.
2005-09-22 11:20:33 +00:00
Ian Dowse
4832a19173 Add a "comconsole_speed" loader variable that can be used to change
the serial console speed (i386 and amd64 only). If the previous
stage boot loader requested a serial console (RB_SERIAL or RB_MULTIPLE)
then the default speed is determined from the current serial port
speed. Otherwise it is set to 9600 or the value of BOOT_COMCONSOLE_SPEED
at compile time.

This makes it possible to set the serial port speed once in
/boot.config and the setting will propagate to boot2, loader and
the kernel serial console.
2005-08-18 01:39:43 +00:00
Ian Dowse
a00a259113 Add the ability to specify the boot2 serial console speed in
/boot.config or on the "boot:" prompt line via a "-S<speed>" flag,
e.g. "-h -S19200". This adds about 50 bytes to the size of boot2
and required a few other small changes to limit the size impact.
This changes only affects boot2; there are further loader changes
to follow.
2005-08-18 00:42:45 +00:00
Suleiman Souhlal
1446d11a9b The kernel is usually at /boot/kernel/kernel nowadays.
PR:	i386/81756
Submitted by:	trasz <trasz@buziaczek.pl>
2005-08-06 00:33:42 +00:00
Jung-uk Kim
fd95fd457f Simplify SMBIOS loader variables and drop `hint.smbios.0.enabled'.
They are not real hints.

Reported by:	des
Pointed out by:	peter
Approved by:	anholt (mentor)
2005-07-27 19:11:10 +00:00
Andrey A. Chernov
63ecaee8d6 Add -mno-sse3 for prescott/nocona 2005-07-15 12:22:14 +00:00
Jung-uk Kim
3e709972e1 Scan static SMBIOS structures and export the following environment
variables to loader:

hint.smbios.0.enabled		"YES" when SMBIOS is detected

hint.smbios.0.bios.vendor	BIOS vendor
hint.smbios.0.bios.version	BIOS version
hint.smbios.0.bios.reldate	BIOS release date

hint.smbios.0.system.maker	System manufacturer
hint.smbios.0.system.product	System product name
hint.smbios.0.system.version	System version number

hint.smbios.0.planar.maker	Base board manufacturer
hint.smbios.0.planar.product	Base board product name
hint.smbios.0.planar.version	Base board version number

hint.smbios.0.chassis.maker	Enclosure manufacturer
hint.smbios.0.chassis.version	Enclosure version

These strings can be used to detect hardware quirks and to set appropriate
flags.  For example, Compaq R3000 series and some HP laptops require

	hint.atkbd.0.flags="0x9"

to boot.  See amd64/67745 for more detail.

Note: Please do not abuse this feature to resolve general problem when it
      can be fixed programmatically.  This must be used as a last resort.

PR:		kern/81449
Approved by:	anholt (mentor)
2005-07-14 19:52:22 +00:00
David E. O'Brien
659e382f5b Temperarly disable building in the bzip2 support by default so we can fit
on the i386 floppies.  Sigh, I hate floppies.
2005-06-01 15:32:57 +00:00
David E. O'Brien
264d3e6b45 Put bzip2 support on equal footing with gzip support.
Enable bzip2 support by default, set LOADER_NO_BZIP2_SUPPORT to disable it.

Pointy hat to:	sobomax
2005-05-31 21:16:50 +00:00
John Baldwin
8b7c03a7a4 - Add support to the loader for multiple consoles.
- Teach the i386 and pc98 loaders to honor multiple console requests from
  their respective boot2 binaries so that the same console(s) are used in
  both boot2 and the loader.
- Since the kernel doesn't support multiple consoles, whichever console is
  listed first is treated as the "primary" console and is passed to the
  kernel in the boot_howto flags.

PR:		kern/66425
Submitted by:	Gavin Atkinson gavin at ury dot york dot ac dot uk
MFC after:	1 week
2005-05-27 19:31:00 +00:00
John Baldwin
9389b62e52 Fix a warning by adding a missing 'const'.
MFC after:	1 week
2005-05-27 19:28:04 +00:00
John Baldwin
5b09b18204 Print out the commands from /boot.config after parsing them so that they
output is sent to the correct console(s).

PR:		kern/66425
Submitted by:	Gavin Atkinson gavin at ury dot york dot ac dot uk
MFC after:	1 week
2005-05-27 19:26:11 +00:00
Philippe Charnier
f942457007 Remove unused variables. Remove prototype for function that does not exist. 2005-05-20 13:14:18 +00:00
Ruslan Ermilov
e2bc0fb2ea Allow BOOT_BOOT0_COMCONSOLE_SPEED to be derived from BOOT_COMCONSOLE_SPEED
at compile time.
2005-04-25 17:41:35 +00:00
Garrett Wollman
98576a6485 Pass the hostname we got from DHCP to the kernel so that machines can
share a read-only NFS root.
2005-04-17 21:38:22 +00:00
Nate Lawson
2626a56934 Extend a local buffer to prevent an overflow of the XSDT address.
Submitted by:	Joerg Sonnenberger
Obtained from:	DragonflyBSD
MFC after:	1 day
2005-04-16 17:38:24 +00:00
Stefan Farfeleder
94bd92c387 Fix 'implicit int' instance. 2005-04-09 14:07:13 +00:00
David E. O'Brien
0ed36875f4 Ensure GCC does not use FP registers in integer code.
I think all we really need is -fno-sse2.
I really don't like cluttering up the compiler invocation,
but this bigger hammer will fix reported problems for now.
2005-03-15 18:43:36 +00:00
Alexander Kabaev
721d5bfe2e Allow kernels loaded by pxeboot, which was compiled with LOADER_TFTP_SUPPORT,
to stll be able to mount NFS root as prescribed by DCHP configuration. Since
pxeboot is using TFTP to get to the files, pxeboot can not rely on NFS to
provide it a root directory hande as a side effect. pxeboot has to  make RPC
mount call itself.
2005-03-12 21:26:53 +00:00