this bug and submitted these patches to dunstan@. He sent them to me
to test, and I discovered they were needed for the atmel kernel config
files. Since we were playing with them in the terminal room after the
developer's summit today, I thought I'd go ahead and commit them to
allow those folks that now have atmel hardware (thanks Andre) a chance
to try it out w/o my help. Since dunstan@ is asleep right now, risk
stepping on his toes a little by going ahead and committing this
change.
Submitted by: dunstan@, bde@
Tested by: bde@
This change will let us to have full configuration of a running kernel
available in sysctl:
sysctl -b kern.conftxt
The same configuration is also contained within the kernel image. It can be
obtained with:
config -x <kernelfile>
Current functionality lets you to quickly recover kernel configuration, by
simply redirecting output from commands presented above and starting kernel
build procedure. "include" statements are also honored, which means options
and devices from included files are also included.
Please note that comments from configuration files are not preserved by
default. In order to preserve them, you can use -C flag for config(8). This
will bring configuration file and included files literally; however,
redirection to a file no longer works directly.
This commit was followed by discussion, that took place on freebsd-current@.
For more details, look here:
http://lists.freebsd.org/pipermail/freebsd-current/2007-March/069994.htmlhttp://lists.freebsd.org/pipermail/freebsd-current/2007-May/071844.html
Development of this patch took place in Perforce, hierarchy:
//depot/user/wkoszek/wkoszek_kconftxt/
Support from: freebsd-current@ (links above)
Reviewed by: imp@
Approved by: imp@
- The code that creates hints.c and env.c from the skeleton files
moved into separate functions.
- Sanity checks for missing "ident" and "cputype" directives moved
into main(), alongside the existing check for "machine".
PR: bin/90310
Submitted by: Matt Emmerton <matt@gsicomp.on.ca>
Don't keep duplicate files in the files list just to
mark the device as "known" later. XXX: Since the
device list isn't unique (there can be two "device foo"
directives, as this the case with LINT+DEFAULTS), we
have to traverse it all to mark all copies of the same
device as "used", but this is not worse than it was.
directory before the specified config file. This is implemented by
opening DEFAULTS as stdin if it exists, and if so resetting stdin to the
actual config file when DEFAULTS is fully parsed via yywrap(). In short,
this lets us create DEFAULTS kernel configs in /sys/<arch>/conf that can
enable certain options or devices by default and allow users to disable
them via 'nooptions' or 'nodevice' rather than having to create kludge
NO_FOO options.
Requested by: scottl
Reviewed by: scottl
allows us to specify the machine_arch as well as machine. If
specified then a second link will be made, similar to machine, from
$MACHINE_ARCH to $S/$MACHINE_ARCH/include.
This is for ports where MACHINE != MACHINE_ARCH (pc98 today, others in
the future?).
Reviewed by: arch@, nyan@
remaining consumers to have the count passed as an option. This is
i4b, pc98/wdc, and coda.
Bump configvers.h from 500013 to 600000.
Remove heuristics that tried to parse "device ed5" as 5 units of the ed
device. This broke things like the snd_emu10k1 device, which required
quotes to make it parse right. The no-longer-needed quotes have been
removed from NOTES, GENERIC etc. eg, I've removed the quotes from:
device snd_maestro
device "snd_maestro3"
device snd_mss
I believe everything will still compile and work after this.
It doesn't actually do it yet though. This adds a flag to config so
that we can exclude certain vendor files from this even when the rest
of the kernel has it on. make -DNO_WERROR would also bypass all of it.
to be included into this one. This works the same way as #include
does in C; as far as the user is concerned, the included file is
inlined into the current one.
Since config(8) is no longer limited to working on one user-supplied
file, printing just a line number in an error message is not
sufficient. The new global variable yyfile represents the file
currently being parsed, and must be printed as well.
Reviewed by: imp
Obtained from: OpenBSD
Use Warner Losh's "hint" driver to decode ascii strings to fill the
resource table at boot time.
config(8) no longer generates an ioconf.c table - ie: the configuration
no longer has to be compiled into the kernel. You can reconfigure your
isa devices with the likes of this at loader(8) time:
set hint.ed.0.port=0x320
userconfig will be rewritten to use this style interface one day and will
move to /boot/userconfig.4th or something like that.
It is still possible to statically compile in a set of hints into a kernel
if you do not wish to use loader(8). See the "hints" directive in GENERIC
as an example.
All device wiring has been moved out of config(8). There is a set of
helper scripts (see i386/conf/gethints.pl, and the same for alpha and pc98)
that extract the 'at isa? port foo irq bar' from the old files and produces
a hints file. If you install this file as /boot/device.hints (and update
/boot/defaults/loader.conf - You can do a build/install in sys/boot) then
loader will load it automatically for you. You can also compile in the
hints directly with: hints "device.hints" as well.
There are a few things that I'm not too happy with yet. Under this scheme,
things like LINT would no longer be useful as "documentation" of settings.
I have renamed this file to 'NOTES' and stored the example hints strings
in it. However... this is not something that config(8) understands, so
there is a script that extracts the build-specific data from the
documentation file (NOTES) to produce a LINT that can be config'ed and
built. A stack of man4 pages will need updating. :-/
Also, since there is no longer a difference between 'device' and
'pseudo-device' I collapsed the two together, and the resulting 'device'
takes a 'number of units' for devices that still have it statically
allocated. eg: 'device fe 4' will compile the fe driver with NFE set
to 4. You can then set hints for 4 units (0 - 3). Also note that
'device fe0' will be interpreted as "zero units of 'fe'" which would be
bad, so there is a config warning for this. This is only needed for
old drivers that still have static limits on numbers of units.
All the statically limited drivers that I could find were marked.
Please exercise EXTREME CAUTION when transitioning!
Moral support by: phk, msmith, dfr, asmodai, imp, and others
config(8). This commit allows control of the creation of the
#include "foo.h" files. We now only create them explicitly when needed.
BTW; these are mostly bad because they usually imply static limits on
numbers of units for devices. eg: struct mysoftc sc[NFOO];
These static limits have Got To Go.
- redo the "at" configuration system so that it just syntax checks
to make sure the device you're configuring something "at" appears to
exist. Nuke a bunch of complexity that was responsible for creating
"clones" of wildcard devices and some wierd stuff in a few places
including the scbus config tables etc.
- merge "controller" and "device" - there is no difference as far as
the kernel is concernend, it's just something there to make life
difficult for config file writers. "controller" is now an alias for
"device".
- emit full scsi config into the resource tables. We could trivially
change cam to use that rather than it's own "special" table for wiring
and static configuration. ATA could use this too for static wiring.
- try and emulate some of the quirks of the old system where it made
sense. Some were too strange though and I'd be very suprised if they
were features and not outright bugs. nexus handling is still strange.
One thing in particular is that some of the wierd entries in the
newbus devtables is now gone as it was a quirk side effect of the
wildcard/question-mark cloning above.
GENERIC and LINT still build etc.
directory than the default one. If the option is not given, then the
output of config is exactly as before. Only when an alternate output
directory has been specified will config modify its behavior.
Additional changed:
o Remove the now conflicting and unused NODEV define. It
conflicts with NODEV in sys/param.h.
o Rename the now conflicting MACHINE token to ARCH. It
conflicts with MACHINE in sys/param.h.
o Fix some easy style bugs.
o Fix some easy grammar bugs in the manpage.
Approved by: peter, archie
- make this work: options FOO123=456 *without quotes*
- grumble (but accept) vector xxxintr, and tty/net/bio/cam flags.
- complain if a device is specified twice (eg: 2 x psm0)
- don't require quotes around: port IO_COM2
- recognize negative numbers. (ie: options CAM_DEBUG_UNIT=-1)
- GC some more unused stuff (we don't have composite disks from config(8)).
- various other nits (snprintf paranoia etc)
I zapped the MACHINE_MIPS stuff, it isn't likely to be useful apart from
recognition of the machine name. It would be reasonable to expect new
ports would look something like the alpha/i386 from a config perspective.
candidate for this is "npx0", more are likely to follow.
Check for pseudo-devices that are being configured, but don't appear
in any "files" file. The ``pseudo-device bpf 2'' already hit me too
often.
non-standard and not used. "port auto" is equal to "port?" or missing "port"
keyword now. "port none" is really probe routine task (return -1 for
no ports).
