Date: Tue, 13 Jun 2000 16:18:29 -0700 From: Peter Wemm <peter@netplex.com.au> To: current@freebsd.org Subject: HEADS UP!: config changes... Message-ID: <20000613231829.2F4BF1CD7@overcee.netplex.com.au>
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*** CAUTION IS REQUIRED ***!
FYI, an intrusive commit has been done that requires careful attention. If
you ignore this or mess it up, it can burn your house down, shoot your dog,
close your bank accounts, report you to the IRS, or maybe even something
bad.
An old version 500001 config(8) will (I think) generate a buildable config.
If you ignore the dire warnings and manage to get a kernel built somehow,
you will have a less than fulfilling experience. Most likely you just will
not be able to type anything as your console would be dead as the atkbd
controller will have failed to probe.
In a nutshell, what you need to do is:
# update /usr/sbin/config
cd src/usr.sbin/config; make cleandir obj depend && make all install
# update /boot/loader.conf
cd src/sys/boot; make obj depend all install
# update your kernel config files
cd src/sys/i386/conf
perl gethints.pl < YOURKERNEL > /boot/device.hints
vi YOURKERNEL
change *ALL* "device foo0 at isa? port blah etc" to "device foo" - see
GENERIC for examples. All the 'at ? port ?' stuff is handled by
the new /boot/device.hints
See GENERIC - if you use a static limited device (eg: fe, aha, le, etc)
where GENERIC has 'device le 1' *and* you had more than one device
(eg: device le0 at ..., device le1 at ...) then you will need to specify
more units. (eg: "device le 2" in the example above.)
# I cannot stress this enough: **SAVE A WORKING /kernel**
cp /kernel /kernel.works
This is not quite yet complete, but is fully functional. There may still
be some syntax changes to the hints stuff in the future, so pay attention.
With respect to LINT - we had a lot of documentation in the file that would
have been lost if the 'at isa? port ...' was removed, so I've copied it to
a file called 'NOTES' which is NOT something you can feed to config. This
file is documentation only. I chose to not keep both LINT and NOTES
as they would have gotten out of sync fairly quickly. However, it is
still possible to generate a buildable test-coverage LINT.
ie:
cd src/sys/i386/conf; make LINT; config LINT
LINT will be generated from the NOTES file.
Hopefully I have not forgotten anything. I had to make minor tweaks after
I generated and uploaded the patches. I have not tested it as well on
the Alpha as I have on the i386.
------- Forwarded Message
Date: Tue, 13 Jun 2000 15:28:50 -0700
From: Peter Wemm <peter@FreeBSD.org>
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/usr.sbin/config Makefile config.h config.y ...
peter 2000/06/13 15:28:50 PDT
Modified files:
usr.sbin/config Makefile config.h config.y configvers.h
lang.l main.c mkheaders.c mkmakefile.c
mkoptions.c
sys/alpha/conf GENERIC SIMOS
sys/boot/forth loader.conf
sys/conf Makefile.alpha Makefile.i386
Makefile.pc98 files.alpha files.i386
files.pc98
sys/i386/conf GENERIC NEWCARD NOTES
sys/i386/isa if_cx.c
sys/i4b/driver i4b_isppp.c
sys/i4b/tina-dd i4b_tina_dd.c
sys/kern subr_bus.c
sys/pc98/conf GENERIC
sys/pc98/pc98 wd.c
Added files:
sys/alpha/conf GENERIC.hints gethints.pl
sys/i386/conf GENERIC.hints Makefile NEWCARD.hints
gethints.pl makeLINT.pl
sys/pc98/conf GENERIC.hints gethints.pl
Removed files:
usr.sbin/config mkioconf.c
sys/i386/conf LINT
Log:
Borrow phk's axe and apply the next stage of config(8)'s evolution.
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
Revision Changes Path
1.27 +2 -2 src/usr.sbin/config/Makefile
1.37 +14 -29 src/usr.sbin/config/config.h
1.43 +21 -230 src/usr.sbin/config/config.y
1.21 +2 -2 src/usr.sbin/config/configvers.h
1.28 +10 -36 src/usr.sbin/config/lang.l
1.39 +17 -23 src/usr.sbin/config/main.c
1.16 +20 -42 src/usr.sbin/config/mkheaders.c
1.53 +103 -68 src/usr.sbin/config/mkmakefile.c
1.19 +11 -15 src/usr.sbin/config/mkoptions.c
1.81 +24 -24 src/sys/alpha/conf/GENERIC
1.12 +8 -8 src/sys/alpha/conf/SIMOS
1.27 +2 -2 src/sys/boot/forth/loader.conf
1.61 +8 -8 src/sys/conf/Makefile.alpha
1.191 +8 -8 src/sys/conf/Makefile.i386
1.92 +8 -8 src/sys/conf/Makefile.pc98
1.52 +1 -2 src/sys/conf/files.alpha
1.322 +1 -2 src/sys/conf/files.i386
1.155 +1 -3 src/sys/conf/files.pc98
1.260 +40 -46 src/sys/i386/conf/GENERIC
1.27 +41 -43 src/sys/i386/conf/NEWCARD
1.783 +404 -271 src/sys/i386/conf/NOTES
1.34 +1 -5 src/sys/i386/isa/if_cx.c
1.8 +1 -4 src/sys/i4b/driver/i4b_isppp.c
1.7 +1 -5 src/sys/i4b/tina-dd/i4b_tina_dd.c
1.68 +98 -63 src/sys/kern/subr_bus.c
1.142 +122 -68 src/sys/pc98/conf/GENERIC
1.113 +3 -6 src/sys/pc98/pc98/wd.c
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