boot diskless with it, you get a panic because setconf() is only
called for mountroot == ffs_mountroot. It really needs to be called
no matter what manner of rootfs we have. I can't really say if
swapgeneric will work with a CD-ROM though. (I get the feeling I'm
the only one who uses swapgeneric these days anyway.)
there may even be LKMs.) Also, change the internal name of `unixdomain'
to `localdomain' since AF_LOCAL is now the preferred name of this family.
Declare netisr correctly and in the right place.
It closed the wrong device (usually the B partition instead of the C
partition).
It closed a device without having opened it.
It didn't open a device often enough. This caused swap partitions on
slices other than the first slice looked at to be unavailable for swapping.
It didn't check the device number sufficiently.
Remove silly "Naffy, the Wonder Porpoise" attribution and add more
justifiable (and overdue) attribution to Bruce Evans. Look at it
as a delete and add operation batched together, not a substitution. :-)
notice, performed all of the structural changes necessary to get this thing
to work with the unidirectional-DMA version of voxware.
This work is -not- complete, but it's in far better shape than it was, and
I may not touch it again for another few months.
The ``flags 1'' in the fdc line is now only needed for owners of an
Insight tape (perhaps there aren't any? Mine is disfunctional). All
other probes are safe wrt. to the motor-control line of floppy disk
drives. Document the flag in LINT finally.
as side-effect, removed some legacy code that was necessary
when we called vm_fault inside of vm_fault_quick instead of using
the kernel/user space byte move routines.
algorithm is used on aic7770 Rev E or higher chips to improve perfomance.
This required a hardware change but we don't know exactly what (most
likely some special register to do fast SCB indexing into host memory),
and we are not at all sure that there are more than 4 SCBs on these
chips. This probe will still classify the revision of the aic7xxx, but
we now default to 4 SCBs (at least until we know more of what was done).
This also fixes a bug in the timeout routine where we cleared a flag
too soon making it imposible to enter one section of the routine.
Submitted by: Timeout bug - Dan Eischen <deischen@iworks.InterWorks.org>
interrupts to zero to start with. This is the value we return in
most cases. The sense code then outbs the apropriate value to cause
sense retrieval. The return value was uninitialized before this
change (something that was an okay thing with the old sequencer code,
but not with the semantics of the new).
This problem caused us to always retrieve sense upon recieving a non
zero status byte. This is exactly what was happening for the "target
busy" status returned by exabyte tape drives when they rewind or
power on with a tape installed. The request sense proved fatal.
This should fix the tape problems.
It is the kernel driver's responsibility to do the list manipulation whenever
a selection timeout or a request sense occurs.
Print out the interrupt type that the device has been set to. It seems that
one of the Asus motherboards botches this and David thought a diagnostic would
be nice.
Fix a bug in my diagnostic code that David found.
Reviewed by: Wcarchive and David Greenman
to be `int' or smaller and some functions returned `int' instead
of `void'. The first bug was detected when console functions were
defined in a place central enough for type checking to actually
work and the second bug was introduced when the interface was
changed to match what the console functions in other drivers actually
return.
through the use of the config file flags as opposed to the option
"NSECS_MULTI". "NSECS_MULTI" has been removed from the driver.
The new capability allows boot-time modification of the config.
I made the changes I sent you before. In the interests of cleanliness, I made
modifications to /sys/i386/isa/tw.c to kill the warnings and make it compile
clean. While I was at it, I also made a bunch of internal functions static.
Submitted by: Gene Stark <gene@starkhome.cs.sunysb.edu>
higher level scsi code.
Spls should never be conditionalized, so don't do so here.
Restructure the get_scb routine so that we can't get into an infinite
loop if the ccbs are exhausted and we are are called with SCSI_NOSLEEP set.
Other driver maintainer's that based their scb allocation routines on Julian's
code should look at these changes and implement them for their driver.
The aic7xxx driver inspired these changes because early revs of the
aic7770 chips have so few SCBs that you can actually run out. If you
have a rev C or aic7770 (as is reported by the driver probe) and had more
than 2 drives, you could get into an infinite loop when using up all of
the SCBs. Since the driver will only allow two SCBs per device and I
only had two devices, I never saw this problem on my Rev C card.
Bzero only 19 bytes of the scb instead of 2k (ack!). This was a hold
over from when a struct SCB only contained the information downloaded
to the board, but we now store kernel driver data in there as well. This
greatly lowers the overhead for small transactions (I get ~1MB/sec for
dds with a 512 byte block size).
Submitted by: John Dyson with the aic7xxx specific optimization by me
higher level scsi code.
Spls should never be conditionalized, so don't do so here.
Restructure the get_ccb routine so that we can't get into an infinite
loop if the ccbs are exhausted and we are are called with SCSI_NOSLEEP set.
Other driver maintainer's that based their ccb allocation routines on Julian's
code should look at these changes and implement them for their driver.
Submitted by: John Dyson
don't expect this to work yet.. but at least they're here..
(hey this cvs stuff is fun!)
activate with a line exactly like the isa line in the config file,
(but specifying eisa :)
patches to come..
Change the interfaces of these functions to save space. The code
that takes the least amount of space is often the opposite to what
you might expect. E.g., it helps to waste a few bytes passing
pointers so that the compiler can't see that certain addresses
are identical (gcc likes to waste space by reloading fat constants
even when the constant is already in a register).
Rewrite getbootdev() to save 80 bytes of space and to make it less
ugly. 32 bytes were saved simply by omitting the continue statements
in the pseudo-switch.
recently introduced bloat in just 2 calls to biosread(), although
very little in calls to putc() and serial_putc(). Gcc produces
amazingly bad code for unnecessary conversions. E.g., if it has
`int x' in register %edx and wants to pass a char, then it could
simply push %edx and access only one byte in the callee. Instead,
it sometimes unnecessarily spills %edx; it always sign extends
%edx and pushes the result.
Remove useless `extern' in function prototypes.
Remove unused declaration of `end'.
Declare pbzero() and pcpy() like the library bzero and bcopy().
Declare printf() properly.
do fit, and beeping in case of an overflow.
. Drop a comment about the ``FORCE_COMCONSOLE'' option into
README.serial.
. Increase the name buffer for the root directory from 100 bytes
to 8 KB; this is in no way ideal, but (IMHO) the best that can
be done by now. People did encounter problems with their root
dir name listing overflowing the allocated buffer space. Once
we've got the three-stage boot, we should implement some basic
malloc(). Swap space is already getting tight now, perhaps the
swap should go into another 64 KB segment instead.
. Make the keyboard probe less paranoid. It should not give up in
case of a keyboard that's continuously demanding RESEND's. Even
though the keyboard reset apparently has not been reported to be
complete, it's at the very least proven that there IS something
like a keyboard available.
This solves problems with the ``Gateway-2000 AllKey programmable''
(sp?) keyboard, that experienced a total hang with the previous
probe.
Thanks goes to Scott Blachowicz <scott@statsci.com> for his
extensive testing of my various interim (debugging) bootblocks
to get this working.
interested parties.
Make the loader refuse to load anything below 1 MB -- we didn't
support it since FreeBSD 2.0R. Avoid gratuitously wiping out the BIOS
variables or the loader.
the kernel at 0-640k; we haven't had the ability to do that since before
2.0R. Furthermore, I fail to see how putting an instruction at 0 and then
doing a .org 0x500 is going to prevent the stuff from getting clobbered
in the first place; a.out is just too stupid to know about sparse address
spaces.
Previously, this worked right if both AUTO_EOI_1 and AUTO_EOI_2 are
defined, but not if AUTO_EOI_1 is defined and AUTO_EOI_2 is not defined.
The latter case should be the default. DUMMY_NOPS should be the default
too. Currently there are only two NOPs slowing down rtcin() (although
there are no delays in writertc()) and several FASTER_NOPs slowing down
interrupt handling in vector.s.
Fix stack offsets for the (previously) unused untested
FAST_INTR_HANDLER_USES_ES case.
This should NOT go into 2.0.5 /phk
Support disk slices. This involves mainly replacing inline code with
function calls. Support for ST506 drives is temporarily broken since
the `setgeom' arg to dsopen() is not implemented completely enough to
use. The `setgeom' arg will go away and ST506 drives will be supported
in another way. A large amount of dead code is left in wdopen() as a
reminder of the problems here.
Close the device in wdsize(). Open tracking was broken on all drives
with a swap device.
Remove support for soft write protection. There are no ioctls to set
it. It was used to disable writing to unlabelled disks, but we want
to support writing to foreign partitions on unlabeled disks.
Use generic dkbad routines to do about 2/3 of the work for supporting
bad144.
Improve disk statistics: estimate 4MB/sec instead of 8MB/sec for
the transfer rate (ISA max is 4MB/sec, old IDE max is 3.3MB/sec);
fix dk_xfer[] (it counted sectors, not transfers); keep the estimate
dk_seek[] = dk_xfer[] (was sectors, is now transfers); only count
words actually transferred (the count is still too high after a
failed write and after retries). Remove wdxfer[].
Fix indentation in wdattach(). Fix resulting botched printing of the
disk size for ST506 drives. Print the disk geometry less cryptically.
o Fix the keyboard probe to properly wait for the ready bit before
sending a command to the keyboard controller. This should avoid the
problems some people are experiencing where the boot blocks hang the
system during keyboard probe. (It does solve it for me.)
o Fix a bug that effectively prevented the boot blocks from ever
passing control to the serial console. [while(--retries) instead of
while(retries--)]
o Gratuitously reduced the keyboard probe timeout from 500 to 5
seconds. :)
o Introduced a new option ``FORCE_COMCONSOLE'' as a commented-out
example in the Makefile, to force the usage of a serial console
regardless of a keyboard being connected or not.
o Moved all external declarations to boot.h, declared all functions
there, and ANSIfied all function declarations/definitions.
(printf() remains bogus, however -- i'm too lazy to fix this.)
We're in the ninetees, dunno why we should still support compilers
from the 70's.
and #if defined (I586_CPU) thingies into identifycpu() so that we only
compile in what's actually needed for a given CPU. So far as I can tell,
none of my 386 machines generate a cpu_vendor code, so I made the extra vendor
and feature line conditional on I486_CPU and I586_CPU. (Otherwise we
print out a blank line which looks silly.)
at least one user out there who's system won't autoboot from the
serial console because of what sounds like 'phantom keystrokes'
making the timeout timer trip. I've tried to solve this by
adding an extra call to init_serial() right before the 'Boot:'
prompt is printed (done only if RB_SERIAL is set) to hopefully
make sure that the input buffer is clear. Unfortunately, the fellow
is in Germany and I haven't heard back from him yet. I haven't
been able to duplicate this problem on my hardware, so this is
a stab in the dark. At the very least, it shouldn't hurt anything.
kernels with 'options I586_CPU.'
The declaration for pentium_mhz is hidden inside an #ifdef I586_CPU,
but machdep.c refers to it whether I586_CPU is defined or not. This
temporary hack puts the offending code inside an #ifdef I586_CPU as
well so that a kernel without it will successfully compile.
I must emphasize the word 'temporary:' somebody needs to seriously
beat on the identifycpu() function with an #ifdef stick so that
I386_CPU, I486_CPU and I586_CPU will do the right things.
Dropping into the debugger when a break comes down the serial line is a
>MISFEATURE (1st class)< and has been put under it's own #ifdef. This
should be a magic sequence of chars instead.
For those where it was easy, drivers were also fixed to call
dev_attach() during probe rather than attach (in keeping with the
new design articulated in a mail message five months ago). For
a few that were really easy, correct state tracking was added as well.
The `fd' driver was fixed to correctly fill in the description.
The CPU identify code was fixed to attach a `cpu' device. The code
was also massively reordered to fill in cpu_model with somethingremotely
resembling what identifycpu() prints out. A few bytes saved by using
%b to format the features list rather than lots of ifs.
new driver code, there are diffs to several other existing files
on the system and a man page.
This version of matcd implements the rest of the key ioctls related to
playing audio CDs and reading table of contents information from any
type of disc.
This update also corrects several problems detected since the original
version 1(10) was released. These include:
1. Jordons report on the kernel -c string problem.
2. A problem with the driver being confused by other types of
devices located at addresses it probes.
3. An old CD TOC wouldn't always be cleared after a disc change.
4. Cleaned up code so -Wall yields no warnings on 2.0 and later.
5. A problem with drive getting out of sync with the driver when
changing between CD-Data and CD-DA.
There have only been two reports from the field relating to problems
so either the first release isn't really being used or doesn't have
many problems.
If there are any problems with this submission, please let me know.
Submitted by: Frank Durda IV <uhclem%nemesis@fw.ast.com>
1.5 seconds in ftintr_wait().
Three people have reported that this fixes the problem they are having.
Submitted by: Steve Gerakines <steve2@genesis.tiac.net>
drivers to protect DDB from being invoked while the console is in
process-controlled (i.e., graphics) mode.
Implement the logic to use this hook from within pcvt. (I'm sure
Søren will do the syscons part RSN).
I've still got one occasion where the system stalled, but my attempts
to trigger the situation artificially resulted int the expected
behaviour. It's hard to track bugs without the console and DDB
available. :-/
warnings and are cosmetic only. Poul once requested them, but neither
Sean nor Søren commented on them, so i commit it now before it's
getting lost some day.
card. This is the braindamaged card with the 80186 CPU on it. It is
slow, probably not very good after all, but hey, if you have one lying
around doing nothing anyway...
Added the "zp0" driver to GENERIC.
will cause kernel compiles to work even if the src/includes directory
doesn't exist but still do the 'Right Thing' and pull files from the
source tree if it does exist.
Reviewed by: Bruce Evans
#179). The fix implements a ttyhalfclose() (sort of), resetting the
session and pgrp pointers when the physical device is about to be
closed.
Suggested by: bde
old type (stty) ioctls can easily bypass locking bits.
It involves manual conversion from old ioctls to new ones,
large piece of code duplicated from tty_compat.c
after ttioctl too, because it can change t_line.
Remove (TS_CNTTB | TS_LNCH) test, it is always inherits from
old tty mode and can't be reach in currently setted mode.
o the includes are now properly done by <sys/foo.h> instead of "foo.h"
o a bunch of undeclared functions has been resolved
o pcvt finally supports devconfig
When attempting to abort a command, don't assume that just because the
sequecer happens to have SCBPTR pointing at the scb we want that it is
an active command.
- catch the interrupt type (EDGE/LEVEL) before chip reset instead
of guessing the right type.
- Add pause variable to the ahc struct to better handle the different
interrupt types and pausing the sequencer.
- CLRINTSTAT -> CLRSCSIINT: This is a documented bit in the CLRINT
register in newer Adaptec documentation, so use their name for it.
- Report valid residual byte counts.
- Don't mess with the target scratch areas > id 8 on single, narrow,
channel devices. The BIOS does a checksum of this area and can
flip out if we zero it out.
- Initialize the sequencer FLAGS scratch ram variable in the single
channel devices to 0. This was the cause of the annoying warning
where we would get a cmdcmplt the first time we did any type of
transfer negotiation with no valid scb. It also fixes the problem
that looked like the INTSTAT register wasn't clearing fast enough.
This only showed up on 294x cards, not motherboard aic7870s.
- Add the AHC_AIC7870 type and use it as the superset of aic7870
based controllers.
- clear the sync offset section of the targ scratch area so that
we default to asyncronous transfers. This was only a problem
for wide controllers because there was a scenario where the
offset wouldn't get updated before a data(out/in) phase would
occur. This required some change in the sequencer code since we
were depending on this field to hold the rate to negotiate.
- allow sync and wide negotiated commands to be tagged (the sequencer
now handles this properly).
I'm not exactly sure why all the inb/outw stuff got added to netboot.h
and I'd be happy if someone like Martin or Bruce could take a look at it!
Submitted by: "Serge A. Babkin" <babkin@hq.icb.chel.su>
* to reduce the number of adapter failures. Transceiver select
* logic changed to use value from EEPROM. Autoconfiguration
* features added.
Submitted by: "Serge A. Babkin" <babkin@hq.icb.chel.su>
Etherlink III 'zp' on 2.0R, but it did not work with the -current.
Noriyuki Takahashi <hor@aecl.ntt.jp> san has fixed this bug.
Our alpha-testers are tested this driver with 3C589B-COMBO and
3C589B-TP. And it works fine.
I also fixed a little about the use of ZP_DEBUG symbol and beautified
the awful Frankenstein-style indent :-) with "indent -c0 -nfc1 -i4".
[Also merge with Bruce's last changes]
Submitted by: "HOSOKAWA Tatsumi" <hosokawa@mt.cs.keio.ac.jp>
update what has actually been touched. This should speed up
screen access on slow hardware.
Introduced setting of "destructive" cursor size, much like
the old hardware cursor.
Install the biosboot as /usr/mdec/boot[12]
Make the traditional links from [swf]dboot and boot[swf]d to boot[12] files.
Install dosboot as /usr/mdec/boot/fbsdboot.exe
if (tp->t_line != 0)
test when CS_ODONE, it fails for NTTYDISC, use
if (linesw[tp->t_line].l_start != ttstart)
instead.
Reviewed by:
Submitted by:
Obtained from:
CVS:
BREAK/parity/framing errors.
Term "correctly" assumes POSIX spec. and 4.4 ttyinput() behaviour.
1) Discard BREAK/parity at interrupt level when apropriate IGN*
is set in iflag. It helps "raw" mode works even IGN* is set.
2) Zero parity (if INPCK) and framing directly in buffer
before passing it to b_to_q() in "raw" mode.
Efficency:
interrupt level: if no error occurse, only two "test" commands added
"raw" mode: buf scan incc times for parity/framing added
Reviewed by:
Submitted by:
Obtained from:
CVS:
Report floppy/tape units on seperate lines as fdX:/ftX: to correct lots of
ways the current scheme failed to end the output with \n.
Add controller and/or drive designator to the fron of several messages
that come from this drive. [It's not fun to track down driver messages
using grep over the source tree.]
Reviewed by: joerg
- ignore the partition table if it is identical with the bogus one in
/usr/src/sys/i386/boot/biosboot/start.S. Honoring the bogus size
field was fatal. The error is detected but other compatibilty
cruft weakens the error handling too much for this case.
- weaken the partition entry checking to allow the following treatments
of C/H/S addresses when C should be >= 1024:
(1) allow C = 1023, H = max, S = max.
(2) allow C to be correct modulo 1024.
Other compatibilty cruft weakens the error handling to allow all
C/H/S addresses, but there too many errors were reported.
Improve error messages:
- print C/H/S addresses if relevant.
- distinguish primary partition table from extended partition tables.
- don't use diskerr() except for i/o errors.
NOT derived from the Linux code and is thus not GPL'd. It is the author's
express wish that the GPL copyrighted version be removed and this BSD copyright
version take its place. Considering our own stance on this, I'm certainly
not going to argue! [Note to NetBSD folks: You're free to grab it now :-)]
Submitted by: Mikael Hybsch <micke@dynas.se>
ultra14f.c and eliminate constants.
Correct EISA slot scan loops to look at slots 1 to 15 inclusive (off
by 1 errors all over the place). Other drivers need this, I will get
to it after a little more work.
Correct the ultrastore EISA probe so that it starts after the last
EISA slot probed instead of starting over from slot 0.
We need an eisa.h to move a lot of common constants into. I will
write it if someone tells me where it should go (sys/eisa?).
#include <i386/isa/isa.h>
return IO_EISASIZE instead of hard coded 0x1000.
if_ep.c:
Remove commented out disabling of interrupts that gave a
"comment withing a comment" warning.
Fixed the I/O statistics
Allow WD1007 type controllers to work
Support MULTI-BLOCK I/O
Correct delay to use port 0x84, reading the status register
might not be a long enough delay.
Changed probe message to match SCSI type devices.
to the user address space unless pcb_onfault is set. The code is currently
commented out because iBCS2 and process debugging parts of the kernel
need to be changed/fixed first.
probe of the device and shouldn't affect normal operation. It seems that
some version of the aic7870 are extreamly slow in clearing their interrupt
register so the added delay is required to ensure we don't poll a stale
interrupt value.
Clean up debugging printfs and stuff superflous output into #ifdef AHC_DEBUG.
Ensure that sdtrpending and wdtrpending are cleared in all cases after
we recieve an SDTR or WDTR message.
With this commit, the 294x should work or at least be much closer to
working properly.
with individual devices for each type of sound card:
opl, sb, sbxvi, sbmidi, pas, mpu, gus, gusxvi, gusmax, mss, uart
EXCLUDE_* options are no longer required to be included in the config file.
They are automatically determined by local.h depending on the devices
included.
Move #includes in local.h to os.h so files are included in the proper
order to avoid warnings.
soundcard.c now has additional code to reflect the device driver
routines needed.
Define new EXCLUDE_SB16MIDI for use in sb16_midi.c and dev_table.h.
#ifndef EXCLUDE_SEQUENCER or EXCLUDE_AUDIO have been added to
soundcard.c and sound_switch.c where appropriate.
Probe outputs changed to reflect new device names.
Readme.freebsd not needed. Update sound.doc with new config instructions.
Reviewed by: wollman
To use this: recompile src/gnu/usr.bin/cc, compile your kernel. The
files you want to profile should be compiled with '-a -g'. "strip -x"
the kernel and run. You don't need to profile all files in the kernel.
My next commit is the program to extract the data from the running kernel.
$Id$ information, and other code to make sound driver compile and work
correctly with FreeBSD.
Integrate changes obtained from Sujal Patel. These changes are:
o local.h: reverse option logic from EXCLUDE_* to AUDIO_*
o pas2_mixer.c: small addition
o ad1848.c: minor change with macro names
o sequencer.c: minor change with note check
o many spelling corrections in comments in about every other file
messages like this:
wdc0 at 0x1f0-0x1f7 irq 14 on isa
wdc0: unit 0 (wd0): <ST506>
wd0: size unknown, using BIOS values: 615 cyl, 4 head, 17 sec, bytes/sec 512
npx0 at 0xf0-0xff irq 13 on motherboard
npx0: changing root device to wd0a
^^^^^^
The spurious 'npx0: ' pops up if you have a 386 with a 387 FPU.
Make the sound configuration a little neater
(see /sys/i386/isa/sound/Readme.freebsd)
Add support for the Microsoft Sound Source.
Document the sound options again.
Submitted by: Sujal Patel <smpatel@wam.umd.edu>
Obtained from: Voxware
Let "grey delete" be a function key (default is 0x7f)
Fix the xor cursor again..
Made the backspace key generate del as default
Made CTRL-space generate nul as default.
Feb. 10th snapshot. The keyboard probe in the bootblock seems to
have been singled out as the cause of these problems, so I've beefed it
up alittle. This pushes us right up to the edge of the size limit:
the second stage boot is now 7152 bytes in size, just 8 bytes under
the wire. On the other hand, the new probe now does almost exactly
what syscons does, so hopefully this will do the trick. It seems
to work properly on my hardware, but then so did the old probe.
compiler.
Be carefull about over usage of volatile, it really killed performance
in a few areas and there was a better place to make things volatile in
almost all cases. The driver can now receive at full speed without RNR
errors.
New functions create - vm_object_pip_wakeup and pagedaemon_wakeup that
are used to reduce the actual number of wakeups.
New function vm_page_protect which is used in conjuction with some new
page flags to reduce the number of calls to pmap_page_protect.
Minor changes to reduce unnecessary spl nesting.
Rewrote vm_page_alloc() to improve readability.
Various other mostly cosmetic changes.
(a) bring back ttselect, now that we have xxxdevtotty() it isn't dangerous.
(b) remove all of the wrappers that have been replaced by ttselect
(c) fix formatting in syscons.c and definition in syscons.h
(d) add cxdevtotty
NOT DONE:
(e) make pcvt work... it was already broken...when someone fixes pcvt to
link properly, just rename get_pccons to xxxdevtotty and we're done
Include proper files for 2.x.
Remove old unused argument to ixreset (int uba)
Nolonger convert ether_type to host byte order.
Use arp_ifinit in place of arpwhohas.
Change cb_ias to be non volatile.
is close to 1000000 / 960 usec so the confusion probably didn't matter.
Test for COMCONSOLE before testing for RB_SERIAL so that the RB_SERIAL
test can be optimized away if COMCONSOLE is 1.
Simplify and Uniformize style of previous commit.
(b) add a function callback vector to tty drivers that will return a pointer
to a valid tty structure based upon a dev_t
(c) make syscons structures the same size whether or not APM is enabled so
utilities don't crash if NAPM changes (and make the damn kernel compile!)
(d) rewrite /dev/snp ioctl interface so that it is device driver and i386
independant
Removed screensavers from syscons, they are now LKM's. This makes it
possible to do some really "interesting" screensavers...
Fixed bug that sometimes caused garbage to appear when leaving
"scroll-lock" history.
Reformattet indentation, it got too deep for a normal 80 pos screen.
Split up in syscons.c & syscons.h for use with the saver-lkm's.
Temporarily removed -s option from vidcontrol, savers should now
be loaded with modload.
commands per target. I could have followed the route of the ncr driver
and gone to great lengths to get the SCSI subsystem to support more, but
I think I'll use the time saved to help Julian and Peter make tagged
queuing a better handled generic feature. This also includes some comment
and enum clean up and a possible fix for the hanging PCI controllers.
returned to user mode without enabling ASTs. The problem fixed itself
at the next syscall or non-FPU trap, if any. It hung the system for
a test process that masked SIGFPE's and divided by zero. The faulting
division was returned to endlessly and this gave plently of opportunities
for the swi_ast_phantom case to be reached; after it was reached the
system hung because the ASTs for preemption and SIGINT handling were
disabled.
just thinking about it.
Two changes need to be made to allow 'config kernel swap generic' to
work properly without requiring any compile-time flags:
/usr/src/usr.sbin/config/mkswapconf.c: we need to define a dummy stub
for the setconf() function to replace the one in swapgeneric.c that
isn't available in non-generic configurations.
/usr/src/sys/i386/i386/autoconf.c: the -a boot flag causes setroot()
to be skipped and lets setconf() prompt the user for a root device.
If you skip setroot() in a non-generic kernel, you could get severely
hosed. To avoid this, we silently ignore the -a flag if rootdev != NODEV.
(rootdev is always initialized to NODEV in swapgeneric.c, so if
we find that rootdev is something other than NODEV, we know we're
not using a generic configuration.)
briefly over it, and see some serious architectural issues in this stuff.
On the other hand, I doubt that we will have any solution to these issues
before 2.1, so we might as well leave this in.
Most of the stuff is bracketed by #ifdef's so it shouldn't matter too much
in the normal case.
Reviewed by: phk
Submitted by: HOSOKAWA, Tatsumi <hosokawa@mt.cs.keio.ac.jp>
Slice 0 is now for the first BSD slice. The first BSD slice is
the first DOSpartition with id 0xa5 or the whole disk if their
are no DOSpartitions (except the latter is not yet implemented).
Existing partitions on it work the same as in 2.0 except the
'd' partition is no longer special and partitions are relative
to the skice.
Slice 1 is now for the whole disk and gets a read-only label
describing the disk. Previously, slice 0 was for the whole disk
and there was no label on it.
Slices 2-31 are for DOSpartitions. Slice 0 is an alias for one
of these if there is a BSD slice. Previously, slices 1-31 were
for DOSpartitions.
diskslice_machdep.c:
Expand whole disk slice to include all DOSpartitions. More work
is required for >1024 cylinders and to rewrite the label iff the
driver is unsure about the geometry.
subr_diskslice.c:
New function dsisopen() to help handle media changes.
when ttselect() is improved. This requires using an array of tty structs
and not using ttymalloc().
Fix an off by 1 error. Some caclulations seem to be off by a factor
of NCY. NCY defaults to 16, which gives 256 tty structs occupying
0xd000 bytes. The minor number encoding only allows 16 ttys.
Update the types of timeout functions to 2.0.
It boots FreeBSD from a running MS-DOS system.
It's compiled using some MS-DOS tools, but there is a binary
hidden in the uuencoded file. (Go ahead, flame me if you can come up
with a solution for the problem. Just saying "this is bad" doesn't count!)
Rod, you were right: one would have to deal with weird interfaces to the
memory managers, and it seems that Christian found them all, and made them
work.
Thanks Christian!
Reviewed by: phk
Submitted by: DI. Christian Gusenbauer <cg@fimp01.fim.uni-linz.ac.at>
Christians README:
------------------
Hi Everybody!
This is version 1.5 of "fbsdboot", a program that allows you to boot a kernel
from a MS-DOS partition or a FreeBSD partition. This program runs using DOS.
It works with various memory managers (like EMM386, 386MAX) under certain
circumstances.
First, a FreeBSD kernel is always loaded to memory starting at 0x100000. To
assure that loading the kernel *does not* overwrite memory used by memory
managers, high memory for the kernel is allocated and after loading the kernel
it's moved to 0x100000.
Second, there are many ways to switch to protected mode which is necessary to
start the kernel. Each BIOS gives you the possibility to use INT15H (AH=89H)
to do that. But some memory-managers like 386max does not allow you to use
this method.
An other way to do the switch is to use DPMI services, but they do not
guarantee, that the protected mode application is executed with privilege
level 0. Therefore this method is *not* used.
VCPI services offer another way to switch to protected mode, and VCPI servers
are built into "emm386.exe", "386max" and "qemm". That's why, this method is
implemented in fbsdboot.exe.
Fbsdboot.exe tries to switch to protected mode using VCPI services. If they're
not available INT15H is used to do the switch. If that fails, it's not possible
for this version of fbsdboot.exe to boot a kernel :-(.
You can get commandline options of fbsdboot if you start it with "-?" as option!
I don't know, if fbsdboot works with QEMM, as I don't have the possibility to
test it.
Enjoy and have fun!
Christian.
cg@fimp01.fim.uni-linz.ac.at
PS: Many thanks to Bruce Evans for his assistance!
