NOTES revision 52909
1#
2# LINT -- config file for checking all the sources, tries to pull in
3#	as much of the source tree as it can.
4#
5# $FreeBSD: head/sys/conf/NOTES 52909 1999-11-05 20:37:23Z obrien $
6#
7# NB: You probably don't want to try running a kernel built from this
8# file.  Instead, you should start from GENERIC, and add options from
9# this file as required.
10#
11
12#
13# This directive is mandatory; it defines the architecture to be
14# configured for; in this case, the 386 family based IBM-PC and
15# compatibles.
16#
17machine		i386
18
19# 
20# This is the ``identification'' of the kernel.  Usually this should
21# be the same as the name of your kernel.
22#
23ident		LINT
24
25#
26# The `maxusers' parameter controls the static sizing of a number of
27# internal system tables by a complicated formula defined in param.c.
28#
29maxusers	10
30
31#
32# The `makeoptions' parameter allows variables to be passed to the
33# generated Makefile in the build area.
34#
35# CONF_CFLAGS gives some extra compiler flags that are added to ${CFLAGS}
36# after most other flags.  Here we use it to inhibit use of non-optimal
37# gcc builtin functions (e.g., memcmp).
38#
39# DEBUG happens to be magic.
40# The following is equivalent to 'config -g KERNELNAME' and creates
41# 'kernel.debug' compiled with -g debugging as well as a normal
42# 'kernel'.  Use 'make install.debug' to install the debug kernel
43# but that isn't normally necessary as the debug symbols are not loaded
44# by the kernel and are not useful there anyway.
45#
46# KERNEL can be overridden so that you can change the default name of your
47# kernel.
48#
49makeoptions	CONF_CFLAGS=-fno-builtin  #Don't allow use of memcmp, etc.
50#makeoptions	DEBUG=-g		#Build kernel with gdb(1) debug symbols
51#makeoptions	KERNEL=foo		#Build kernel "foo" and install "/foo"
52
53#
54# Certain applications can grow to be larger than the 128M limit
55# that FreeBSD initially imposes.  Below are some options to
56# allow that limit to grow to 256MB, and can be increased further
57# with changing the parameters.  MAXDSIZ is the maximum that the
58# limit can be set to, and the DFLDSIZ is the default value for
59# the limit.  You might want to set the default lower than the
60# max, and explicitly set the maximum with a shell command for processes
61# that regularly exceed the limit like INND.
62#
63options 	MAXDSIZ="(256*1024*1024)"
64options 	DFLDSIZ="(256*1024*1024)"
65
66# 
67# BLKDEV_IOSIZE sets the default block size used in user block
68# device I/O.  Note that this value will be overriden by the label
69# when specifying a block device from a label with a non-0 
70# partition blocksize.  The default is PAGE_SIZE.
71#
72options		BLKDEV_IOSIZE=8192
73
74# Options for the VM subsystem
75#options 	PQ_NOOPT		# No coloring
76options 	PQ_LARGECACHE		# color for 512k/16k cache
77#options 	PQ_HUGECACHE		# color for 1024k/16k cache
78
79# This allows you to actually store this configuration file into
80# the kernel binary itself, where it may be later read by saying:
81#    strings -aout -n 3 /kernel | grep ^___ | sed -e 's/^___//' > MYKERNEL
82#
83options         INCLUDE_CONFIG_FILE     # Include this file in kernel
84
85
86#####################################################################
87# SMP OPTIONS:
88#
89# SMP enables building of a Symmetric MultiProcessor Kernel.
90# APIC_IO enables the use of the IO APIC for Symmetric I/O.
91# NCPU sets the number of CPUs, defaults to 2.
92# NBUS sets the number of busses, defaults to 4.
93# NAPIC sets the number of IO APICs on the motherboard, defaults to 1.
94# NINTR sets the total number of INTs provided by the motherboard.
95#
96# Notes:
97#
98#  An SMP kernel will ONLY run on an Intel MP spec. qualified motherboard.
99#
100#  Be sure to disable 'cpu I386_CPU' && 'cpu I486_CPU' for SMP kernels.
101#
102#  Check the 'Rogue SMP hardware' section to see if additional options
103#   are required by your hardware.
104#
105
106# Mandatory:
107options 	SMP			# Symmetric MultiProcessor Kernel
108options 	APIC_IO			# Symmetric (APIC) I/O
109
110# Optional, these are the defaults plus 1:
111options 	NCPU=5			# number of CPUs
112options 	NBUS=5			# number of busses
113options 	NAPIC=2			# number of IO APICs
114options 	NINTR=25		# number of INTs
115
116#
117# Rogue SMP hardware:
118#
119
120# Bridged PCI cards:
121#
122# The MP tables of most of the current generation MP motherboards
123#  do NOT properly support bridged PCI cards.  To use one of these
124#  cards you should refer to ???
125
126
127#####################################################################
128# CPU OPTIONS
129
130#
131# You must specify at least one CPU (the one you intend to run on);
132# deleting the specification for CPUs you don't need to use may make
133# parts of the system run faster.  This is especially true removing
134# I386_CPU.
135#
136cpu		I386_CPU
137cpu		I486_CPU
138cpu		I586_CPU		# aka Pentium(tm)
139cpu		I686_CPU		# aka Pentium Pro(tm)
140
141#
142# Options for CPU features.
143#
144# CPU_BLUELIGHTNING_FPU_OP_CACHE enables FPU operand cache on IBM
145# BlueLightning CPU.  It works only with Cyrix FPU, and this option
146# should not be used with Intel FPU.
147#
148# CPU_BLUELIGHTNING_3X enables triple-clock mode on IBM Blue Lightning 
149# CPU if CPU supports it. The default is double-clock mode on
150# BlueLightning CPU box.  
151#
152# CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1).
153#
154# CPU_DIRECT_MAPPED_CACHE sets L1 cache of Cyrix 486DLC CPU in direct
155# mapped mode.  Default is 2-way set associative mode.
156#
157# CPU_CYRIX_NO_LOCK enables weak locking for the entire address space
158# of Cyrix 6x86 and 6x86MX CPUs by setting the NO_LOCK bit of CCR1.
159# Otherwise, the NO_LOCK bit of CCR1 is cleared.  (NOTE 3)
160#
161# CPU_DISABLE_5X86_LSSER disables load store serialize (i.e. enables
162# reorder).  This option should not be used if you use memory mapped
163# I/O device(s). 
164#
165# CPU_FASTER_5X86_FPU enables faster FPU exception handler.
166#
167# CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products
168# for i386 machines. 
169#
170# CPU_IORT defines I/O clock delay time (NOTE 1).  Default values of
171# I/O clock delay time on Cyrix 5x86 and 6x86 are 0 and 7,respectively
172# (no clock delay).
173#
174# CPU_LOOP_EN prevents flushing the prefetch buffer if the destination
175# of a jump is already present in the prefetch buffer on Cyrix 5x86(NOTE
176# 1). 
177#
178# CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1).
179#
180# CPU_SUSP_HLT enables suspend on HALT.  If this option is set, CPU
181# enters suspend mode following execution of HALT instruction.
182#
183# CPU_WT_ALLOC enables write allocation on Cyrix 6x86/6x86MX and AMD
184# K5/K6/K6-2 cpus.
185#
186# CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache
187# flush at hold state.
188#
189# CYRIX_CACHE_REALLY_WORKS enables (1) CPU cache on Cyrix 486 CPUs
190# without cache flush at hold state, and (2) write-back CPU cache on
191# Cyrix 6x86 whose revision < 2.7 (NOTE 2).
192#
193# NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY
194# Pentiums) from locking up when a LOCK CMPXCHG8B instruction is
195# executed.  This should be included for ALL kernels that won't run
196# on a Pentium.
197#
198# NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors
199# which indicates that the 15-16MB range is *definitely* not being 
200# occupied by an ISA memory hole.
201#
202# NOTE 1: The options, CPU_BTB_EN, CPU_LOOP_EN, CPU_IORT,
203# CPU_LOOP_EN and CPU_RSTK_EN should not be used because of CPU bugs.
204# These options may crash your system. 
205#
206# NOTE 2: If CYRIX_CACHE_REALLY_WORKS is not set, CPU cache is enabled
207# in write-through mode when revision < 2.7.  If revision of Cyrix
208# 6x86 >= 2.7, CPU cache is always enabled in write-back mode.
209#
210# NOTE 3: This option may cause failures for software that requires
211# locked cycles in order to operate correctly.
212#
213options 	CPU_BLUELIGHTNING_FPU_OP_CACHE
214options 	CPU_BLUELIGHTNING_3X
215options 	CPU_BTB_EN
216options 	CPU_DIRECT_MAPPED_CACHE
217options 	CPU_DISABLE_5X86_LSSER
218options 	CPU_FASTER_5X86_FPU
219options 	CPU_I486_ON_386
220options 	CPU_IORT
221options 	CPU_LOOP_EN
222options 	CPU_RSTK_EN
223options 	CPU_SUSP_HLT
224options 	CPU_WT_ALLOC
225options 	CYRIX_CACHE_WORKS
226options 	CYRIX_CACHE_REALLY_WORKS
227#options 	NO_F00F_HACK
228
229#
230# A math emulator is mandatory if you wish to run on hardware which
231# does not have a floating-point processor.  Pick either the original,
232# bogus (but freely-distributable) math emulator, or a much more
233# fully-featured but GPL-licensed emulator taken from Linux.
234#
235options 	MATH_EMULATE		#Support for x87 emulation
236# Don't enable both of these in a real config.
237options 	GPL_MATH_EMULATE	#Support for x87 emulation via
238					#new math emulator 
239
240
241#####################################################################
242# COMPATIBILITY OPTIONS                                             
243
244#
245# Implement system calls compatible with 4.3BSD and older versions of
246# FreeBSD.  You probably do NOT want to remove this as much current code
247# still relies on the 4.3 emulation.
248#
249options 	COMPAT_43
250
251#
252# Allow user-mode programs to manipulate their local descriptor tables.
253# This option is required for the WINE Windows(tm) emulator, and is
254# not used by anything else (that we know of).
255#
256options 	USER_LDT		#allow user-level control of i386 ldt
257
258#
259# These three options provide support for System V Interface
260# Definition-style interprocess communication, in the form of shared
261# memory, semaphores, and message queues, respectively.
262#
263options 	SYSVSHM
264options 	SYSVSEM
265options 	SYSVMSG
266
267#
268# This option includes a MD5 routine in the kernel, this is used for
269# various authentication and privacy uses.
270#
271options 	MD5
272
273
274#####################################################################
275# DEBUGGING OPTIONS
276
277#
278# Enable the kernel debugger.
279#
280options 	DDB
281
282#
283# Don't drop into DDB for a panic. Intended for unattended operation
284# where you may want to drop to DDB from the console, but still want
285# the machine to recover from a panic
286#
287options 	DDB_UNATTENDED
288
289#
290# If using GDB remote mode to debug the kernel, there's a non-standard
291# extension to the remote protocol that can be used to use the serial
292# port as both the debugging port and the system console.  It's non-
293# standard and you're on your own if you enable it.  See also the
294# "remotechat" variables in the FreeBSD specific version of gdb.
295#
296options 	GDB_REMOTE_CHAT
297
298# 
299# KTRACE enables the system-call tracing facility ktrace(2).
300#
301options 	KTRACE			#kernel tracing
302
303#
304# The INVARIANTS option is used in a number of source files to enable
305# extra sanity checking of internal structures.  This support is not
306# enabled by default because of the extra time it would take to check
307# for these conditions, which can only occur as a result of
308# programming errors.
309#
310options 	INVARIANTS
311
312#
313# The INVARIANT_SUPPORT option makes us compile in support for
314# verifying some of the internal structures.  It is a prerequisite for
315# 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
316# called.  The intent is that you can set 'INVARIANTS' for single
317# source files (by changing the source file or specifying it on the
318# command line) if you have 'INVARIANT_SUPPORT' enabled.
319#
320options 	INVARIANT_SUPPORT
321
322#
323# The DIAGNOSTIC option is used to enable extra debugging information
324# from some parts of the kernel.  As this makes everything more noisy,
325# it is disabled by default.
326#
327options 	DIAGNOSTIC
328
329#
330# PERFMON causes the driver for Pentium/Pentium Pro performance counters
331# to be compiled.  See perfmon(4) for more information.
332#
333options 	PERFMON
334
335
336#
337# This option let some drivers co-exist that can't co-exist in a running
338# system.  This is used to be able to compile all kernel code in one go for
339# quality assurance purposes (like this file, which the option takes it name
340# from.)
341#
342options COMPILING_LINT
343
344
345# XXX - this doesn't belong here.
346# Allow ordinary users to take the console - this is useful for X.
347options 	UCONSOLE
348
349# XXX - this doesn't belong here either
350options 	USERCONFIG		#boot -c editor
351options 	INTRO_USERCONFIG	#imply -c and show intro screen
352options 	VISUAL_USERCONFIG	#visual boot -c editor
353
354# XXX - neither does this
355options 	ROOTDEVNAME=\"da0s2e\"
356
357#####################################################################
358# NETWORKING OPTIONS
359
360#
361# Protocol families:
362#  Only the INET (Internet) family is officially supported in FreeBSD.
363#  Source code for the NS (Xerox Network Service) is provided for amusement
364#  value.
365#
366options 	INET			#Internet communications protocols
367
368options 	IPX			#IPX/SPX communications protocols
369options 	IPXIP			#IPX in IP encapsulation (not available)
370options 	IPTUNNEL		#IP in IPX encapsulation (not available)
371
372options		NCP			#NetWare Core protocol
373
374options 	NETATALK		#Appletalk communications protocols
375
376# These are currently broken but are shipped due to interest.
377#options 	NS			#Xerox NS protocols
378
379# These are currently broken and are no longer shipped due to lack
380# of interest.
381#options 	CCITT			#X.25 network layer
382#options 	ISO
383#options 	TPIP			#ISO TP class 4 over IP
384#options 	TPCONS			#ISO TP class 0 over X.25
385#options 	LLC			#X.25 link layer for Ethernets
386#options 	HDLC			#X.25 link layer for serial lines
387#options 	EON			#ISO CLNP over IP
388#options 	NSIP			#XNS over IP
389
390# netgraph(4). Enable the base netgraph code with the NETGRAPH option.
391# Individual node types can be enabled with the corresponding option
392# listed below; however, this is not strictly necessary as netgraph
393# will automatically load the corresponding KLD module if the node type
394# is not already compiled into the kernel.
395options			NETGRAPH		#netgraph(4) system
396options			NETGRAPH_ASYNC
397options			NETGRAPH_CISCO
398options			NETGRAPH_ECHO
399options			NETGRAPH_FRAME_RELAY
400options			NETGRAPH_HOLE
401options			NETGRAPH_IFACE
402options			NETGRAPH_LMI
403options			NETGRAPH_PPP
404options			NETGRAPH_PPPOE
405options			NETGRAPH_RFC1490
406options			NETGRAPH_SOCKET
407options			NETGRAPH_TEE
408options			NETGRAPH_TTY
409options			NETGRAPH_UI
410options			NETGRAPH_VJC
411
412device			mn0	# Munich32x/Falc54 Nx64kbit/sec cards.
413
414#
415# Network interfaces:
416#  The `loop' pseudo-device is MANDATORY when networking is enabled.
417#  The `ether' pseudo-device provides generic code to handle
418#  Ethernets; it is MANDATORY when a Ethernet device driver is
419#  configured or token-ring is enabled.
420#  The 'fddi' pseudo-device provides generic code to support FDDI.
421#  The `sppp' pseudo-device serves a similar role for certain types
422#  of synchronous PPP links (like `cx', `ar').
423#  The `sl' pseudo-device implements the Serial Line IP (SLIP) service.
424#  The `ppp' pseudo-device implements the Point-to-Point Protocol.
425#  The `bpf' pseudo-device enables the Berkeley Packet Filter.  Be
426#  aware of the legal and administrative consequences of enabling this
427#  option.  The number of devices determines the maximum number of
428#  simultaneous BPF clients programs runnable.
429#  The `disc' pseudo-device implements a minimal network interface,
430#  which throws away all packets sent and never receives any.  It is
431#  included for testing purposes.
432#  The `tun' pseudo-device implements (user-)ppp and nos-tun
433#  The `streams' pseudo-device implements SysVR4 STREAMS emulation.
434#
435# The PPP_BSDCOMP option enables support for compress(1) style entire
436# packet compression, the PPP_DEFLATE is for zlib/gzip style compression.
437# PPP_FILTER enables code for filtering the ppp data stream and selecting
438# events for resetting the demand dial activity timer - requires bpf.
439# See pppd(8) for more details.
440#
441pseudo-device	ether			#Generic Ethernet
442pseudo-device	token			#Generic TokenRing
443pseudo-device	fddi			#Generic FDDI
444pseudo-device	sppp			#Generic Synchronous PPP
445pseudo-device	loop			#Network loopback device
446pseudo-device	bpf			#Berkeley packet filter
447pseudo-device	disc			#Discard device
448pseudo-device	tun			#Tunnel driver (ppp(8), nos-tun(8))
449pseudo-device	sl	2		#Serial Line IP
450pseudo-device	ppp	2		#Point-to-point protocol
451pseudo-device	streams
452options PPP_BSDCOMP			#PPP BSD-compress support
453options PPP_DEFLATE			#PPP zlib/deflate/gzip support
454options PPP_FILTER			#enable bpf filtering (needs bpf)
455
456#
457# Internet family options:
458#
459# TCP_COMPAT_42 causes the TCP code to emulate certain bugs present in
460# 4.2BSD.  This option should not be used unless you have a 4.2BSD
461# machine and TCP connections fail.
462#
463# MROUTING enables the kernel multicast packet forwarder, which works
464# with mrouted(8).
465#
466# IPFIREWALL enables support for IP firewall construction, in
467# conjunction with the `ipfw' program.  IPFIREWALL_VERBOSE sends
468# logged packets to the system logger.  IPFIREWALL_VERBOSE_LIMIT
469# limits the number of times a matching entry can be logged.
470#
471# WARNING:  IPFIREWALL defaults to a policy of "deny ip from any to any"
472# and if you do not add other rules during startup to allow access,
473# YOU WILL LOCK YOURSELF OUT.  It is suggested that you set firewall_type=open
474# in /etc/rc.conf when first enabling this feature, then refining the
475# firewall rules in /etc/rc.firewall after you've tested that the new kernel
476# feature works properly.
477#
478# IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
479# allow everything.  Use with care, if a cracker can crash your
480# firewall machine, they can get to your protected machines.  However,
481# if you are using it as an as-needed filter for specific problems as
482# they arise, then this may be for you.  Changing the default to 'allow'
483# means that you won't get stuck if the kernel and /sbin/ipfw binary get
484# out of sync.
485#
486# IPDIVERT enables the divert IP sockets, used by ``ipfw divert''
487#
488# IPFILTER_LKM enables LKM support for an ipfilter module (untested).
489#
490# IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
491# packets without touching the ttl).  This can be useful to hide firewalls
492# from traceroute and similar tools.
493#
494# TCPDEBUG is undocumented.
495#
496options 	TCP_COMPAT_42		#emulate 4.2BSD TCP bugs
497options 	MROUTING		# Multicast routing
498options         IPFIREWALL              #firewall
499options         IPFIREWALL_VERBOSE      #print information about
500					# dropped packets
501options         IPFIREWALL_FORWARD      #enable transparent proxy support
502options 	IPFIREWALL_VERBOSE_LIMIT=100 #limit verbosity
503options 	IPFIREWALL_DEFAULT_TO_ACCEPT #allow everything by default
504options 	IPDIVERT		#divert sockets
505#options 	IPFILTER_LKM		#kernel support for ip_fil.o LKM
506options 	IPSTEALTH		#support for stealth forwarding
507options 	TCPDEBUG
508
509# The following options add sysctl variables for controlling how certain
510# TCP packets are handled.
511# 
512# TCP_DROP_SYNFIN adds support for ignoring TCP packets with SYN+FIN. This
513# prevents nmap et al. from identifying the TCP/IP stack, but breaks support
514# for RFC1644 extensions and is not recommended for web servers.
515# 
516# TCP_RESTRICT_RST adds support for blocking the emission of TCP RST packets.
517# This is useful on systems which are exposed to SYN floods (e.g. IRC servers)
518# or any system which one does not want to be easily portscannable.
519# 
520options 	TCP_DROP_SYNFIN		#drop TCP packets with SYN+FIN
521options 	TCP_RESTRICT_RST	#restrict emission of TCP RST
522
523# ICMP_BANDLIM enables icmp error response bandwidth limiting.   You
524# typically want this option as it will help protect the machine from
525# D.O.S. packet attacks.
526#
527options         ICMP_BANDLIM
528
529# DUMMYNET enables the "dummynet" bandwidth limiter. You need
530# IPFIREWALL as well. See the dummynet(4) manpage for more info.
531# BRIDGE enables bridging between ethernet cards -- see bridge(4).
532# You can use IPFIREWALL and dummynet together with bridging.
533options DUMMYNET
534options BRIDGE
535
536#
537# ATM (HARP version) options
538#
539# ATM_CORE includes the base ATM functionality code.  This must be included
540#	for ATM support.
541#
542# ATM_IP includes support for running IP over ATM.
543#
544# At least one (and usually only one) of the following signalling managers 
545# must be included (note that all signalling managers include PVC support):
546# ATM_SIGPVC includes support for the PVC-only signalling manager `sigpvc'.
547# ATM_SPANS includes support for the `spans' signalling manager, which runs
548#	the FORE Systems's proprietary SPANS signalling protocol. 
549# ATM_UNI includes support for the `uni30' and `uni31' signalling managers, 
550#	which run the ATM Forum UNI 3.x signalling protocols.
551#
552# The `hea' driver provides support for the Efficient Networks, Inc.
553# ENI-155p ATM PCI Adapter.
554#
555# The `hfa' driver provides support for the FORE Systems, Inc.
556# PCA-200E ATM PCI Adapter.
557#
558options 	ATM_CORE		#core ATM protocol family
559options 	ATM_IP			#IP over ATM support
560options 	ATM_SIGPVC		#SIGPVC signalling manager
561options 	ATM_SPANS		#SPANS signalling manager
562options 	ATM_UNI			#UNI signalling manager
563device		hea0			#Efficient ENI-155p ATM PCI
564device		hfa0			#FORE PCA-200E ATM PCI
565
566
567#####################################################################
568# FILESYSTEM OPTIONS
569
570#
571# Only the root, /usr, and /tmp filesystems need be statically
572# compiled; everything else will be automatically loaded at mount
573# time.  (Exception: the UFS family---FFS, and MFS --- cannot
574# currently be demand-loaded.)  Some people still prefer to statically
575# compile other filesystems as well.
576#
577# NB: The NULL, PORTAL, UMAP and UNION filesystems are known to be
578# buggy, and WILL panic your system if you attempt to do anything with
579# them.  They are included here as an incentive for some enterprising
580# soul to sit down and fix them.
581#
582
583# One of these is mandatory:
584options 	FFS			#Fast filesystem
585options 	MFS			#Memory File System
586options 	NFS			#Network File System
587
588# The rest are optional:
589# options	NFS_NOSERVER		#Disable the NFS-server code.
590options 	CD9660			#ISO 9660 filesystem
591options 	FDESC			#File descriptor filesystem
592options 	KERNFS			#Kernel filesystem
593options 	MSDOSFS			#MS DOS File System
594options 	NTFS			#NT File System
595options 	NULLFS			#NULL filesystem
596options		NWFS			#NetWare filesystem
597options 	PORTAL			#Portal filesystem
598options 	PROCFS			#Process filesystem
599options 	UMAPFS			#UID map filesystem
600options 	UNION			#Union filesystem
601# The xFS_ROOT options REQUIRE the associated ``options xFS''
602options 	CD9660_ROOT		#CD-ROM usable as root device
603options 	FFS_ROOT		#FFS usable as root device
604options 	MFS_ROOT		#MFS usable as root device
605options 	NFS_ROOT		#NFS usable as root device
606# This code is still experimental (e.g. doesn't handle disk slices well).
607# Also, 'options MFS' is currently incompatible with DEVFS.
608options 	DEVFS			#devices filesystem
609
610# Soft updates is technique for improving file system speed and
611# making abrupt shutdown less risky.  It is not enabled by default due
612# to copyright restraints on the code that implement it.
613#
614# Read ../../ufs/ffs/README.softupdates to learn what you need to
615# do to enable this.  ../../contrib/softupdates/README gives
616# more details on how they actually work.
617#
618#options 	SOFTUPDATES
619
620# Make space in the kernel for a MFS root filesystem.  Define to the number
621# of kilobytes to reserve for the filesystem.
622options 	MFS_ROOT_SIZE=10
623
624# Allow this many swap-devices.
625options 	NSWAPDEV=20
626
627# Disk quotas are supported when this option is enabled.
628options 	QUOTA			#enable disk quotas
629
630# In particular multi-session CD-Rs might require a huge amount of
631# time in order to "settle".  If we are about mounting them as the
632# root f/s, we gotta wait a little.
633#
634# The number is supposed to be in seconds.
635options 	CD9660_ROOTDELAY=20
636
637# If you are running a machine just as a fileserver for PC and MAC
638# users, using SAMBA or Netatalk, you may consider setting this option
639# and keeping all those users' directories on a filesystem that is
640# mounted with the suiddir option. This gives new files the same
641# ownership as the directory (similar to group). It's a security hole
642# if you let these users run programs, so confine it to file-servers
643# (but it'll save you lots of headaches in those cases). Root owned
644# directories are exempt and X bits are cleared. The suid bit must be
645# set on the directory as well; see chmod(1) PC owners can't see/set
646# ownerships so they keep getting their toes trodden on. This saves
647# you all the support calls as the filesystem it's used on will act as
648# they expect: "It's my dir so it must be my file".
649#
650options 	SUIDDIR
651
652# NFS options:
653options 	NFS_MINATTRTIMO=3	# VREG attrib cache timeout in sec
654options 	NFS_MAXATTRTIMO=60
655options 	NFS_MINDIRATTRTIMO=30	# VDIR attrib cache timeout in sec
656options 	NFS_MAXDIRATTRTIMO=60
657options 	NFS_GATHERDELAY=10	# Default write gather delay (msec)
658options 	NFS_UIDHASHSIZ=29	# Tune the size of nfssvc_sock with this
659options 	NFS_WDELAYHASHSIZ=16	# and with this
660options 	NFS_MUIDHASHSIZ=63	# Tune the size of nfsmount with this
661options 	NFS_DEBUG		# Enable NFS Debugging
662
663# Coda stuff:
664options 	CODA			#CODA filesystem.
665pseudo-device	vcoda	4		#coda minicache <-> venus comm.
666
667#
668# Add support for the EXT2FS filesystem of Linux fame.  Be a bit
669# careful with this - the ext2fs code has a tendency to lag behind
670# changes and not be exercised very much, so mounting read/write could
671# be dangerous (and even mounting read only could result in panics.)
672#
673options 	EXT2FS
674
675
676
677#####################################################################
678# POSIX P1003.1B
679
680# Real time extensions added in the 1993 Posix
681# P1003_1B: Infrastructure
682# _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
683# _KPOSIX_VERSION:             Version kernel is built for
684
685options 	P1003_1B
686options 	_KPOSIX_PRIORITY_SCHEDULING
687options 	_KPOSIX_VERSION=199309L
688
689
690#####################################################################
691# SCSI DEVICES
692
693# SCSI DEVICE CONFIGURATION
694
695# The SCSI subsystem consists of the `base' SCSI code, a number of
696# high-level SCSI device `type' drivers, and the low-level host-adapter
697# device drivers.  The host adapters are listed in the ISA and PCI
698# device configuration sections below.
699#
700# Beginning with FreeBSD 2.0.5 you can wire down your SCSI devices so
701# that a given bus, target, and LUN always come on line as the same
702# device unit.  In earlier versions the unit numbers were assigned
703# in the order that the devices were probed on the SCSI bus.  This
704# means that if you removed a disk drive, you may have had to rewrite
705# your /etc/fstab file, and also that you had to be careful when adding
706# a new disk as it may have been probed earlier and moved your device
707# configuration around.
708
709# This old behavior is maintained as the default behavior.  The unit
710# assignment begins with the first non-wired down unit for a device
711# type.  For example, if you wire a disk as "da3" then the first
712# non-wired disk will be assigned da4.
713
714# The syntax for wiring down devices is:
715
716# controller	scbus0 at ahc0		# Single bus device
717# controller	scbus1 at ahc1 bus 0	# Single bus device
718# controller	scbus3 at ahc2 bus 0	# Twin bus device
719# controller	scbus2 at ahc2 bus 1	# Twin bus device
720# device 	da0 at scbus0 target 0 unit 0
721# device	da1 at scbus3 target 1
722# device	da2 at scbus2 target 3
723# device	sa1 at scbus1 target 6
724# device	cd0 at scbus?
725
726# "units" (SCSI logical unit number) that are not specified are
727# treated as if specified as LUN 0.
728
729# All SCSI devices allocate as many units as are required.
730
731# The "unknown" device (uk? in pre-2.0.5) is now part of the base SCSI
732# configuration and doesn't have to be explicitly configured.
733
734controller	scbus0	#base SCSI code
735device		ch0	#SCSI media changers
736device		da0	#SCSI direct access devices (aka disks)
737device		sa0	#SCSI tapes
738device		cd0	#SCSI CD-ROMs
739device		pass0	#CAM passthrough driver
740
741# The previous devices (ch, da, st, cd) are recognized by config.
742# config doesn't (and shouldn't) know about these newer ones,
743# so we have to specify that they are on a SCSI bus with the "at scbus?"
744# clause.
745
746device pt0 at scbus?	# SCSI processor type
747
748# CAM OPTIONS:
749# debugging options:
750# -- NOTE --  If you specify one of the bus/target/lun options, you must
751#             specify them all!
752# CAMDEBUG: When defined enables debugging macros
753# CAM_DEBUG_BUS:  Debug the given bus.  Use -1 to debug all busses.
754# CAM_DEBUG_TARGET:  Debug the given target.  Use -1 to debug all targets.
755# CAM_DEBUG_LUN:  Debug the given lun.  Use -1 to debug all luns.
756# CAM_DEBUG_FLAGS:  OR together CAM_DEBUG_INFO, CAM_DEBUG_TRACE,
757#                   CAM_DEBUG_SUBTRACE, and CAM_DEBUG_CDB
758# 
759# CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
760# SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
761# SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
762# SCSI_REPORT_GEOMETRY: Always report disk geometry at boot up instead
763#                       of only when booting verbosely.
764# SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
765#             queue after a bus reset, and the number of milliseconds to
766#             freeze the device queue after a bus device reset.
767options 	CAMDEBUG
768options 	CAM_DEBUG_BUS=-1
769options 	CAM_DEBUG_TARGET=-1
770options 	CAM_DEBUG_LUN=-1
771options 	CAM_DEBUG_FLAGS="CAM_DEBUG_INFO|CAM_DEBUG_TRACE|CAM_DEBUG_CDB"
772options 	CAM_MAX_HIGHPOWER=4
773options 	SCSI_NO_SENSE_STRINGS
774options 	SCSI_NO_OP_STRINGS
775options 	SCSI_REPORT_GEOMETRY
776options 	SCSI_DELAY=8000	# Be pessimistic about Joe SCSI device
777
778# Options for the CAM CDROM driver:
779# CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
780# CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
781#                           enforced if there is I/O waiting for another LUN
782# The compiled in defaults for these variables are 2 and 10 seconds,
783# respectively.
784#
785# These can also be changed on the fly with the following sysctl variables:
786# kern.cam.cd.changer.min_busy_seconds
787# kern.cam.cd.changer.max_busy_seconds
788#
789options 	CHANGER_MIN_BUSY_SECONDS=2
790options 	CHANGER_MAX_BUSY_SECONDS=10
791
792# Options for the CAM sequential access driver:
793# SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
794# SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
795# SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
796# SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
797options 	SA_SPACE_TIMEOUT="(60)"
798options 	SA_REWIND_TIMEOUT="(2*60)"
799options 	SA_ERASE_TIMEOUT="(4*60)"
800options		SA_1FM_AT_EOD
801
802# Optional timeout for the CAM processor target (pt) device
803# This is specified in seconds.  The default is 60 seconds.
804options		SCSI_PT_DEFAULT_TIMEOUT="60"
805
806
807#####################################################################
808# MISCELLANEOUS DEVICES AND OPTIONS
809
810# The `pty' device usually turns out to be ``effectively mandatory'',
811# as it is required for `telnetd', `rlogind', `screen', `emacs', and
812# `xterm', among others.
813
814pseudo-device	pty		#Pseudo ttys
815pseudo-device	speaker		#Play IBM BASIC-style noises out your speaker
816pseudo-device	gzip		#Exec gzipped a.out's
817pseudo-device	vn		#Vnode driver (turns a file into a device)
818pseudo-device	md		#Memory/malloc disk
819pseudo-device	snp	3	#Snoop device - to look at pty/vty/etc..
820pseudo-device	ccd	4	#Concatenated disk driver
821
822# Configuring Vinum into the kernel is not necessary, since the kld
823# module gets started automatically when vinum(8) starts.  This 
824# device is also untested.  Use at your own risk.
825#
826# The option VINUMDEBUG must match the value set in CFLAGS
827# in /usr/src/sbin/vinum/Makefile.  Failure to do so will result in
828# the following message from vinum(8):
829#
830# Can't get vinum config: Invalid argument
831#
832# see vinum(4) for more reasons not to use these options.
833pseudo-device	vinum		#Vinum concat/mirror/raid driver
834options 	VINUMDEBUG	#enable Vinum debugging hooks
835
836# These are only for watching for bitrot in old tty code.
837# broken
838#pseudo-device	tb
839
840# Size of the kernel message buffer.  Should be N * pagesize.
841options 	MSGBUF_SIZE=40960
842
843
844#####################################################################
845# HARDWARE DEVICE CONFIGURATION
846
847# ISA and EISA devices:
848# EISA support is available for some device, so they can be auto-probed.
849# Micro Channel is not supported at all.
850
851#
852# Mandatory ISA devices: isa, npx
853#
854controller	isa0
855
856#
857# Options for `isa':
858#
859# AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
860# interrupt controller.  This saves about 0.7-1.25 usec for each interrupt.
861# This option breaks suspend/resume on some portables.
862#
863# AUTO_EOI_2 enables the `automatic EOI' feature for the slave 8259A
864# interrupt controller.  This saves about 0.7-1.25 usec for each interrupt.
865# Automatic EOI is documented not to work for for the slave with the
866# original i8259A, but it works for some clones and some integrated
867# versions.
868#
869# MAXMEM specifies the amount of RAM on the machine; if this is not
870# specified, FreeBSD will first read the amount of memory from the CMOS
871# RAM, so the amount of memory will initially be limited to 64MB or 16MB
872# depending on the BIOS.  If the BIOS reports 64MB, a memory probe will
873# then attempt to detect the installed amount of RAM.  If this probe
874# fails to detect >64MB RAM you will have to use the MAXMEM option.
875# The amount is in kilobytes, so for a machine with 128MB of RAM, it would
876# be 131072 (128 * 1024).
877#
878# BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
879# reset the CPU for reboot.  This is needed on some systems with broken
880# keyboard controllers.
881#
882# PAS_JOYSTICK_ENABLE enables the gameport on the ProAudio Spectrum
883
884options 	AUTO_EOI_1
885#options 	AUTO_EOI_2
886options 	MAXMEM="(128*1024)"
887#options 	BROKEN_KEYBOARD_RESET
888#options 	PAS_JOYSTICK_ENABLE
889
890# Enable support for the kernel PLL to use an external PPS signal,
891# under supervision of [x]ntpd(8)
892# More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
893
894options 	PPS_SYNC
895
896# If you see the "calcru: negative time of %ld usec for pid %d (%s)\n"
897# message you probably have some broken sw/hw which disables interrupts
898# for too long.  You can make the system more resistant to this by
899# choosing a high value for NTIMECOUNTER.  The default is 5, there
900# is no upper limit but more than a couple of hundred are not productive.
901# A better strategy may be to sysctl -w kern.timecounter.method=1
902
903options 	NTIMECOUNTER=20
904
905# Enable PnP support in the kernel.  This allows you to automatically
906# attach to PnP cards for drivers that support it and allows you to
907# configure cards from USERCONFIG.  See pnp(4) for more info.
908controller	pnp0
909
910# The keyboard controller; it controls the keyboard and the PS/2 mouse.
911controller	atkbdc0	at isa? port IO_KBD
912
913# The AT keyboard
914device		atkbd0	at atkbdc? irq 1
915
916# Options for atkbd:
917options 	ATKBD_DFLT_KEYMAP	# specify the built-in keymap
918makeoptions	ATKBD_DFLT_KEYMAP="jp.106"
919
920# These options are valid for other keyboard drivers as well.
921options 	KBD_DISABLE_KEYMAP_LOAD	# refuse to load a keymap
922options 	KBD_INSTALL_CDEV	# install a CDEV entry in /dev
923
924# `flags' for atkbd:
925#       0x01    Force detection of keyboard, else we always assume a keyboard
926#       0x02    Don't reset keyboard, useful for some newer ThinkPads
927#       0x04    Old-style (XT) keyboard support, useful for older ThinkPads
928
929# PS/2 mouse
930device		psm0	at atkbdc? irq 12
931
932# Options for psm:
933options 	PSM_HOOKAPM		#hook the APM resume event, useful
934					#for some laptops
935options 	PSM_RESETAFTERSUSPEND	#reset the device at the resume event
936
937# The video card driver.
938device		vga0	at isa? port ? conflicts
939
940# Options for vga:
941# Try the following option if the mouse pointer is not drawn correctly 
942# or font does not seem to be loaded properly.  May cause flicker on 
943# some systems.
944options 	VGA_ALT_SEQACCESS
945
946# If you can dispense with some vga driver features, you may want to
947# use the following options to save some memory.
948options 	VGA_NO_FONT_LOADING	# don't save/load font
949options 	VGA_NO_MODE_CHANGE	# don't change video modes
950
951# Older video cards may require this option for proper operation.
952options 	VGA_SLOW_IOACCESS	# do byte-wide i/o's to TS and GDC regs
953
954# The following option probably won't work with the LCD displays.
955options		VGA_WIDTH90		# support 90 column modes
956
957# To include support for VESA video modes
958options 	VESA
959
960# Splash screen at start up!  Screen savers require this too.
961pseudo-device	splash
962
963# The pcvt console driver (vt220 compatible).
964device		vt0	at isa?
965options 	XSERVER			# support for running an X server.
966options 	FAT_CURSOR		# start with block cursor
967# This PCVT option is for keyboards such as those used on IBM ThinkPad laptops
968options 	PCVT_SCANSET=2 		# IBM keyboards are non-std
969# Other PCVT options are documented in pcvt(4).
970options 	PCVT_24LINESDEF
971options 	PCVT_CTRL_ALT_DEL
972options 	PCVT_EMU_MOUSE
973options 	PCVT_FREEBSD=211
974options 	PCVT_META_ESC
975options 	PCVT_NSCREENS=9
976options 	PCVT_PRETTYSCRNS
977options 	PCVT_SCREENSAVER
978options 	PCVT_USEKBDSEC
979options 	PCVT_VT220KEYB
980
981# The syscons console driver (sco color console compatible).
982device		sc0	at isa?
983options 	MAXCONS=16		# number of virtual consoles
984options 	SC_ALT_MOUSE_IMAGE	# simplified mouse cursor in text mode
985options 	SC_DFLT_FONT		# compile font in
986makeoptions	SC_DFLT_FONT=cp850
987options 	SC_DISABLE_DDBKEY	# disable `debug' key
988options 	SC_DISABLE_REBOOT	# disable reboot key sequence
989options 	SC_HISTORY_SIZE=200	# number of history buffer lines
990options 	SC_MOUSE_CHAR=0x3	# char code for text mode mouse cursor
991options 	SC_PIXEL_MODE		# add support for the raster text mode
992
993# You can selectively disable features in syscons.
994options 	SC_NO_CUTPASTE
995options 	SC_NO_FONT_LOADING
996options 	SC_NO_HISTORY
997options 	SC_NO_SYSMOUSE
998
999#
1000# The Numeric Processing eXtension driver.  In addition to this, you
1001# may configure a math emulator (see above).  If your machine has a
1002# hardware FPU and the kernel configuration includes the npx device
1003# *and* a math emulator compiled into the kernel, the hardware FPU
1004# will be used, unless it is found to be broken or unless "flags" to
1005# npx0 includes "0x08", which requests preference for the emulator.
1006device		npx0	at nexus? port IO_NPX flags 0x0 irq 13
1007
1008#
1009# `flags' for npx0:
1010#	0x01	don't use the npx registers to optimize bcopy.
1011#	0x02	don't use the npx registers to optimize bzero.
1012#	0x04	don't use the npx registers to optimize copyin or copyout.
1013#	0x08	use emulator even if hardware FPU is available.
1014# The npx registers are normally used to optimize copying and zeroing when
1015# all of the following conditions are satisfied:
1016#	I586_CPU is an option
1017#	the cpu is an i586 (perhaps not a Pentium)
1018#	the probe for npx0 succeeds
1019#	INT 16 exception handling works.
1020# Then copying and zeroing using the npx registers is normally 30-100% faster.
1021# The flags can be used to control cases where it doesn't work or is slower.
1022# Setting them at boot time using userconfig works right (the optimizations
1023# are not used until later in the bootstrap when npx0 is attached).
1024# Flag 0x08 automatically disables the i586 optimized routines.
1025#
1026
1027#
1028# Optional ISA and EISA devices:
1029#
1030
1031#
1032# SCSI host adapters: `aha', `aic', `bt'
1033#
1034# adv: All Narrow SCSI bus AdvanSys controllers.
1035# adw: Second Generation AdvanSys controllers including the ADV940UW.
1036# aha: Adaptec 154x
1037# ahc: Adaptec 274x/284x/294x
1038# aic: Adaptec 152x
1039# bt: Most Buslogic controllers
1040#
1041# Note that the order is important in order for Buslogic cards to be
1042# probed correctly.
1043#
1044
1045controller	bt0	at isa? port IO_BT0 irq ?
1046controller	adv0	at isa? port ? irq ?
1047controller	adw0
1048controller	aha0	at isa? port ? irq ?
1049controller	aic0	at isa? port ? irq ?
1050
1051#
1052# Compaq Smart RAID controller.  This driver also uses the major number
1053# of wd, in order to be able to boot a pure RAID system.
1054# Only one line of each is needed, the code finds all available controllers
1055# and devices.
1056#
1057controller	ida0
1058device		id0
1059
1060#
1061# Mylex DAC960, AMI MegaRAID controllers.  Only one entry is needed; the code 
1062# will find and configure all supported controllers.
1063#
1064controller	mlx0		# Mylex DAC960
1065controller	amr0		# AMI MegaRAID
1066
1067#
1068# ATA and ATAPI devices
1069# This is work in progress, use at your own risk.
1070# It currently reuses the majors of wd.c and friends.
1071# It cannot co-exist with the old system in one kernel.
1072# You only need one "controller ata0" for it to find all
1073# PCI devices on modern machines.
1074#controller	ata0
1075#device		atadisk0	# ATA disk drives
1076#device		atapicd0	# ATAPI CDROM drives
1077#device		atapifd0	# ATAPI floppy drives
1078#device		atapist0	# ATAPI tape drives
1079#
1080# If you need ISA only devices, this is the lines to add:
1081#controller	ata1	at isa? port IO_WD1 irq 14
1082#controller	ata2	at isa? port IO_WD2 irq 15
1083# 
1084# All the controller lines can coexist, the driver will
1085# find out which ones are there.
1086
1087#
1088# ST-506, ESDI, and IDE hard disks: `wdc' and `wd'
1089#
1090# The flags fields are used to enable the multi-sector I/O and
1091# the 32BIT I/O modes.  The flags may be used in either the controller
1092# definition or in the individual disk definitions.  The controller
1093# definition is supported for the boot configuration stuff.
1094#
1095# Each drive has a 16 bit flags value defined:
1096#	The low 8 bits are the maximum value for the multi-sector I/O,
1097#	where 0xff defaults to the maximum that the drive can handle.
1098#	The high bit of the 16 bit flags (0x8000) allows probing for
1099#	32 bit transfers.  Bit 14 (0x4000) enables a hack to wake
1100#	up powered-down laptop drives.  Bit 13 (0x2000) allows
1101#	probing for PCI IDE DMA controllers, such as Intel's PIIX
1102#	south bridges. Bit 12 (0x1000) sets LBA mode instead of the
1103#	default CHS mode for accessing the drive. See the wd.4 man page.
1104#
1105# The flags field for the drives can be specified in the controller
1106# specification with the low 16 bits for drive 0, and the high 16 bits
1107# for drive 1.
1108# e.g.:
1109#controller	wdc0	at isa? port IO_WD1 irq 14 flags 0x00ff8004
1110#
1111# specifies that drive 0 will be allowed to probe for 32 bit transfers and
1112# a maximum multi-sector transfer of 4 sectors, and drive 1 will not be
1113# allowed to probe for 32 bit transfers, but will allow multi-sector
1114# transfers up to the maximum that the drive supports.
1115#
1116# If you are using a PCI controller that is not running in compatibility
1117# mode (for example, it is a 2nd IDE PCI interface), then use config line(s)
1118# such as:
1119#
1120#controller	wdc2	at isa? port 0 irq ? flags 0xa0ffa0ff
1121#device		wd4	at wdc2 drive 0
1122#device		wd5	at wdc2 drive 1
1123#
1124#controller	wdc3	at isa? port 0 irq ? flags 0xa0ffa0ff
1125#device		wd6	at wdc3 drive 0
1126#device		wd7	at wdc3 drive 1
1127#
1128# Note that the above config would be useful for a Promise card, when used
1129# on a MB that already has a PIIX controller.  Note the bogus irq and port
1130# entries.  These are automatically filled in by the IDE/PCI support.
1131#
1132
1133controller	wdc0	at isa? port IO_WD1 irq 14
1134device		wd0	at wdc0 drive 0
1135device		wd1	at wdc0 drive 1
1136controller	wdc1	at isa? port IO_WD2 irq 15
1137device		wd2	at wdc1 drive 0
1138device		wd3	at wdc1 drive 1
1139
1140#
1141# This option allow you to override the default probe time for IDE
1142# devices, to get a faster probe.  Setting this below 10000 violate
1143# the IDE specs, but may still work for you (it will work for most
1144# people).
1145#
1146options 	IDE_DELAY=8000	# Be optimistic about Joe IDE device
1147
1148# IDE CD-ROM & CD-R/RW  driver - requires wdc controller
1149device          wcd0
1150
1151# IDE floppy driver - requires wdc controller
1152device          wfd0
1153
1154# IDE tape driver - requires wdc controller
1155device          wst0
1156
1157
1158#
1159# Standard floppy disk controllers and floppy tapes: `fdc', `fd', and `ft'
1160#
1161controller	fdc0	at isa? port IO_FD1 irq 6 drq 2
1162#
1163# FDC_DEBUG enables floppy debugging.  Since the debug output is huge, you
1164# gotta turn it actually on by setting the variable fd_debug with DDB,
1165# however.
1166options 	FDC_DEBUG
1167# FDC_YE enables support for the floppies used on the Libretto.  This is a
1168# pcmcia floppy.  You will also need to add
1169#card "Y-E DATA" "External FDD"
1170#        config 0x4 "fdc0" 10
1171# to your pccard.conf file.
1172options 	FDC_YE		#XXX newbus broken
1173#
1174# Activate this line instead of the fdc0 line above if you happen to
1175# have an Insight floppy tape.  Probing them proved to be dangerous
1176# for people with floppy disks only, so it's "hidden" behind a flag:
1177#controller fdc0 at isa? port IO_FD1 flags 1 irq 6 drq 2
1178
1179device		fd0	at fdc0 drive 0
1180device		fd1	at fdc0 drive 1
1181
1182# M-systems DiskOnchip products see src/sys/contrib/dev/fla/README
1183device		fla0	at isa?
1184
1185#
1186# Other standard PC hardware: `mse', `sio', etc.
1187#
1188# mse: Logitech and ATI InPort bus mouse ports
1189# sio: serial ports (see sio(4))
1190
1191device		mse0	at isa? port 0x23c irq 5
1192
1193device		sio0	at isa? port IO_COM1 flags 0x10 irq 4
1194
1195#
1196# `flags' for serial drivers that support consoles (only for sio now):
1197#	0x10	enable console support for this unit.  The other console flags
1198#		are ignored unless this is set.  Enabling console support does
1199#		not make the unit the preferred console - boot with -h or set
1200#		the 0x20 flag for that.  Currently, at most one unit can have
1201#		console support; the first one (in config file order) with
1202#		this flag set is preferred.  Setting this flag for sio0 gives
1203#		the old behaviour.
1204#	0x20	force this unit to be the console (unless there is another
1205#		higher priority console).  This replaces the COMCONSOLE option.
1206#	0x40	reserve this unit for low level console operations.  Do not
1207#		access the device in any normal way.
1208#	0x80	use this port for serial line gdb support in ddb.
1209#
1210# PnP `flags' (set via userconfig using pnp x flags y)
1211#	0x1	disable probing of this device.  Used to prevent your modem
1212#		from being attached as a PnP modem.
1213#
1214
1215# Options for serial drivers that support consoles (only for sio now):
1216options 	BREAK_TO_DEBUGGER	#a BREAK on a comconsole goes to 
1217					#DDB, if available.
1218options 	CONSPEED=9600		#default speed for serial console (default 9600)
1219
1220# Options for sio:
1221options 	COM_ESP			#code for Hayes ESP
1222options 	COM_MULTIPORT		#code for some cards with shared IRQs
1223options 	EXTRA_SIO=2		#number of extra sio ports to allocate
1224
1225# Other flags for sio that aren't documented in the man page.
1226#	0x20000	enable hardware RTS/CTS and larger FIFOs.  Only works for
1227#		ST16650A-compatible UARTs.
1228
1229#
1230# Network interfaces: `cx', `ed', `el', `ep', `ie', `is', `le', `lnc'
1231#
1232# ar: Arnet SYNC/570i hdlc sync 2/4 port V.35/X.21 serial driver (requires sppp)
1233# cs: IBM Etherjet and other Crystal Semi CS89x0-based adapters
1234# cx: Cronyx/Sigma multiport sync/async (with Cisco or PPP framing)
1235# ed: Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503
1236# el: 3Com 3C501 (slow!)
1237# ep: 3Com 3C509
1238# ex: Intel EtherExpress Pro/10 and other i82595-based adapters
1239# fe: Fujitsu MB86960A/MB86965A Ethernet
1240# ie: AT&T StarLAN 10 and EN100; 3Com 3C507; unknown NI5210; Intel EtherExpress
1241# le: Digital Equipment EtherWorks 2 and EtherWorks 3 (DEPCA, DE100,
1242#     DE101, DE200, DE201, DE202, DE203, DE204, DE205, DE422)
1243# lnc: Lance/PCnet cards (Isolan, Novell NE2100, NE32-VL, AMD Am7990 & Am79C960)
1244# rdp: RealTek RTL 8002-based pocket ethernet adapters
1245# sr: RISCom/N2 hdlc sync 1/2 port V.35/X.21 serial driver (requires sppp)
1246# wl: Lucent Wavelan (ISA card only).
1247# wi: Lucent WaveLAN/IEEE 802.11 PCMCIA adapters. Note: this supports both
1248#     the PCMCIA and ISA cards: the ISA card is really a PCMCIA to ISA
1249#     bridge with a PCMCIA adapter plugged into it.
1250# xe: Xircom/Intel EtherExpress Pro100/16 PC Card ethernet controller.
1251# ze: IBM/National Semiconductor PCMCIA ethernet controller.
1252# zp: 3Com PCMCIA Etherlink III (It does not require shared memory for
1253#     send/receive operation, but it needs 'iomem' to read/write the
1254#     attribute memory)
1255# oltr: Olicom ISA token-ring adapters OC-3115, OC-3117, OC-3118 and OC-3133 
1256#       (no options needed)
1257#
1258device ar0 at isa? port 0x300 irq 10 iomem 0xd0000
1259device cs0 at isa? port 0x300 irq ?
1260device cx0 at isa? port 0x240 irq 15 drq 7
1261device ed0 at isa? port 0x280 irq 5 iomem 0xd8000
1262device el0 at isa? port 0x300 irq 9
1263device ep0
1264device ex0 at isa? port? irq?
1265device fe0 at isa? port 0x300 irq ?
1266device ie0 at isa? port 0x300 irq 5 iomem 0xd0000
1267device ie1 at isa? port 0x360 irq 7 iomem 0xd0000
1268device le0 at isa? port 0x300 irq 5 iomem 0xd0000
1269device lnc0 at isa? port 0x280 irq 10 drq 0
1270device rdp0 at isa? port 0x378 irq 7 flags 2
1271device sr0 at isa? port 0x300 irq 5 iomem 0xd0000
1272device wi0 at isa? port? irq?
1273options 	WLCACHE		# enables the signal-strength cache
1274options 	WLDEBUG		# enables verbose debugging output
1275device wl0 at isa? port 0x300 irq ?
1276device xe0 at isa? port? irq ?
1277# We can (bogusly) include both the dedicated PCCARD drivers and the generic
1278# support when COMPILING_LINT.
1279device ze0 at isa? port 0x300 irq 5 iomem 0xd8000
1280device zp0 at isa? port 0x300 irq 10 iomem 0xd8000
1281
1282device oltr0 at isa?
1283
1284#
1285# ATM related options
1286#
1287# The `en' device provides support for Efficient Networks (ENI)
1288# ENI-155 PCI midway cards, and the Adaptec 155Mbps PCI ATM cards (ANA-59x0).
1289#
1290# atm pseudo-device provides generic atm functions and is required for
1291# atm devices.
1292# NATM enables the netnatm protocol family that can be used to
1293# bypass TCP/IP.
1294#
1295# the current driver supports only PVC operations (no atm-arp, no multicast).
1296# for more details, please read the original documents at 
1297# http://www.ccrc.wustl.edu/pub/chuck/bsdatm/wucs.html
1298#
1299pseudo-device	atm
1300device en0
1301device en1
1302options 	NATM			#native ATM
1303
1304#
1305# Audio drivers: `snd', `sb', `pas', `gus', `pca'
1306#
1307# snd: Voxware sound support code
1308# sb: SoundBlaster PCM - SoundBlaster, SB Pro, SB16, ProAudioSpectrum
1309# sbxvi: SoundBlaster 16
1310# sbmidi: SoundBlaster 16 MIDI interface
1311# pas: ProAudioSpectrum PCM and MIDI
1312# gus: Gravis Ultrasound - Ultrasound, Ultrasound 16, Ultrasound MAX
1313# gusxvi: Gravis Ultrasound 16-bit PCM	(do not use)
1314# mss: Microsoft Sound System
1315# css: Crystal Sound System (CSS 423x PnP)
1316# sscape: Ensoniq Soundscape MIDI interface
1317# sscape_mss: Ensoniq Soundscape PCM (requires sscape)
1318# opl: Yamaha OPL-2 and OPL-3 FM - SB, SB Pro, SB 16, ProAudioSpectrum
1319# uart: stand-alone 6850 UART for MIDI
1320# mpu: Roland MPU-401 stand-alone card
1321#
1322# Note: It has been reported that ISA DMA with the SoundBlaster will
1323# lock up the machine (PR docs/5358).  If this happens to you,
1324# turning off USWC write posting in your machine's BIOS may fix
1325# the problem.
1326# 
1327# Beware!  The addresses specified below are also hard-coded in
1328# i386/isa/sound/sound_config.h.  If you change the values here, you
1329# must also change the values in the include file.
1330#
1331# pcm: PCM audio through various sound cards.
1332#
1333# This has support for a large number of new audio cards, based on
1334# CS423x, OPTi931, Yamaha OPL-SAx, and also for SB16, GusPnP.
1335# For more information about this driver and supported cards,
1336# see the pcm.4 man page and /sys/i386/isa/snd/CARDS.
1337#
1338# The flags of the device tells the device a bit more info about the
1339# device that normally is obtained through the PnP interface.
1340#	bit  2..0   secondary DMA channel;
1341#	bit  4      set if the board uses two dma channels;
1342#	bit 15..8   board type, overrides autodetection; leave it
1343#		    zero if don't know what to put in (and you don't,
1344#		    since this is unsupported at the moment...).
1345#
1346# This driver will use the new PnP code if it's available.
1347#
1348# pca: PCM audio through your PC speaker
1349#
1350# If you have a GUS-MAX card and want to use the CS4231 codec on the
1351# card the drqs for the gus max must be 8 bit (1, 2, or 3).
1352# 
1353# If you would like to use the full duplex option on the gus, then define
1354# flags to be the ``read dma channel''.
1355#
1356# options BROKEN_BUS_CLOCK	#PAS-16 isn't working and OPTI chipset
1357# options SYMPHONY_PAS		#PAS-16 isn't working and SYMPHONY chipset
1358# options EXCLUDE_SBPRO		#PAS-16
1359# options SBC_IRQ=5		#PAS-16. Must match irq on sb0 line.
1360# PAS16: The order of the pas0/sb0/opl0 is important since the
1361#	sb emulation is enabled in the pas-16 attach.
1362#
1363# To override the GUS defaults use:
1364# options GUS_DMA2
1365# options GUS_DMA
1366# options GUS_IRQ
1367#
1368# The i386/isa/sound/sound.doc has more information.
1369
1370# Controls all "VOXWARE" driver sound devices.  See Luigi's driver
1371# below for an alternate which may work better for some cards.
1372#
1373controller	snd0
1374device pas0     at isa? port 0x388 irq 10 drq 6
1375device sb0      at isa? port 0x220 irq 5 drq 1
1376device sbxvi0   at isa? drq 5
1377device sbmidi0  at isa? port 0x330
1378device awe0     at isa? port 0x620
1379device gus0 at isa? port 0x220 irq 12 drq 1
1380#device gus0 at isa? port 0x220 irq 12 drq 1 flags 0x3
1381device mss0 at isa? port 0x530 irq 10 drq 1
1382device css0	at isa? port 0x534 irq 5 drq 1 flags 0x08
1383device sscape0  at isa? port 0x330 irq 9 drq 0
1384device trix0    at isa? port 0x330 irq 6 drq 0
1385device sscape_mss0  at isa? port 0x534 irq 5 drq 1
1386device opl0     at isa? port 0x388
1387device mpu0     at isa? port 0x330 irq 6 drq 0
1388device uart0 at isa? port 0x330 irq 5
1389
1390# The newpcm driver (use INSTEAD of snd0 and all VOXWARE drivers!).
1391# You may also wish to enable the pnp controller with this, for pnp
1392# sound cards.
1393#
1394# For non-pnp sound cards only:
1395#device pcm0 at isa? port ? irq 10 drq 1 flags 0x0
1396#
1397# For pnp sound cards:
1398#device pcm0
1399
1400# Not controlled by `snd'
1401device pca0 at isa? port IO_TIMER1
1402
1403#
1404# Miscellaneous hardware:
1405#
1406# mcd: Mitsumi CD-ROM
1407# scd: Sony CD-ROM
1408# matcd: Matsushita/Panasonic CD-ROM
1409# wt: Wangtek and Archive QIC-02/QIC-36 tape drives
1410# ctx: Cortex-I frame grabber
1411# apm: Laptop Advanced Power Management (experimental)
1412# spigot: The Creative Labs Video Spigot video-acquisition board
1413# meteor: Matrox Meteor video capture board
1414# bktr: Brooktree bt848/848a/849a/878/879 video capture and TV Tuner board
1415# cy: Cyclades serial driver
1416# dgb: Digiboard PC/Xi and PC/Xe series driver (ALPHA QUALITY!)
1417# dgm: Digiboard PC/Xem driver
1418# gp:  National Instruments AT-GPIB and AT-GPIB/TNT board
1419# asc: GI1904-based hand scanners, e.g. the Trust Amiscan Grey
1420# gsc: Genius GS-4500 hand scanner.
1421# joy: joystick
1422# labpc: National Instrument's Lab-PC and Lab-PC+
1423# rc: RISCom/8 multiport card
1424# rp: Comtrol Rocketport(ISA) - single card
1425# tw: TW-523 power line interface for use with X-10 home control products
1426# si: Specialix SI/XIO 4-32 port terminal multiplexor
1427# stl: Stallion EasyIO and EasyConnection 8/32 (cd1400 based)
1428# stli: Stallion EasyConnection 8/64, ONboard, Brumby (intelligent)
1429
1430# Notes on APM
1431#  The flags takes the following meaning for apm0:
1432#    0x0020  Statclock is broken.
1433#    0x0011  Limit APM protocol to 1.1 or 1.0
1434#    0x0010  Limit APM protocol to 1.0
1435#  If apm is omitted, some systems require sysctl -w kern.timecounter.method=1
1436#  for correct timekeeping.
1437
1438# Notes on the spigot:
1439#  The video spigot is at 0xad6.  This port address can not be changed.
1440#  The irq values may only be 10, 11, or 15
1441#  I/O memory is an 8kb region.  Possible values are:
1442#    0a0000, 0a2000, ..., 0fffff, f00000, f02000, ..., ffffff
1443#    The start address must be on an even boundary.
1444#  Add the following option if you want to allow non-root users to be able
1445#  to access the spigot.  This option is not secure because it allows users
1446#  direct access to the I/O page. 
1447#  	options SPIGOT_UNSECURE
1448
1449# Notes on the Comtrol Rocketport driver:
1450#
1451# The exact values used for rp0 depend on how many boards you have
1452# in the system.  The manufacturer's sample configs are listed as:
1453#
1454#   Comtrol Rocketport ISA single card
1455#               device  rp0     at isa? port 0x280
1456#
1457#   If instead you have two ISA cards, one installed at 0x100 and the
1458#   second installed at 0x180, then you should add the following to
1459#   your kernel configuration file:
1460#
1461#               device  rp0     at isa? port 0x100
1462#               device  rp1     at isa? port 0x180
1463#
1464#   For 4 ISA cards, it might be something like this:
1465#
1466#               device  rp0     at isa? port 0x180
1467#               device  rp1     at isa? port 0x100
1468#               device  rp2     at isa? port 0x340
1469#               device  rp3     at isa? port 0x240
1470#
1471#   And for PCI cards, you only need say:
1472#
1473#               device rp0
1474#               device rp1
1475#               ...
1476#   Note: Make sure that any Rocketport PCI devices are specified BEFORE the
1477#   ISA Rocketport devices.
1478
1479# Notes on the Digiboard driver:
1480#
1481# The following flag values have special meanings:
1482#	0x01 - alternate layout of pins (dgb & dgm)
1483#	0x02 - use the windowed PC/Xe in 64K mode (dgb only)
1484
1485# Notes on the Specialix SI/XIO driver:
1486#  **This is NOT a Specialix supported Driver!**
1487#  The host card is memory, not IO mapped.
1488#  The Rev 1 host cards use a 64K chunk, on a 32K boundary.
1489#  The Rev 2 host cards use a 32K chunk, on a 32K boundary.
1490#  The cards can use an IRQ of 11, 12 or 15.
1491
1492# Notes on the Stallion stl and stli drivers:
1493#  See src/i386/isa/README.stl for complete instructions.
1494#  This is version 0.0.5alpha, unsupported by Stallion.
1495#  The stl driver has a secondary IO port hard coded at 0x280.  You need
1496#     to change src/i386/isa/stallion.c if you reconfigure this on the boards.
1497#  The "flags" and "iosiz" settings on the stli driver depend on the board:
1498#	EasyConnection 8/64 ISA:     flags 23         iosiz 0x1000
1499#	EasyConnection 8/64 EISA:    flags 24         iosiz 0x10000
1500#	EasyConnection 8/64 MCA:     flags 25         iosiz 0x1000
1501#	ONboard ISA:                 flags 4          iosiz 0x10000
1502#	ONboard EISA:                flags 7          iosiz 0x10000
1503#	ONboard MCA:                 flags 3          iosiz 0x10000
1504#	Brumby:                      flags 2          iosiz 0x4000
1505#	Stallion:                    flags 1          iosiz 0x10000
1506
1507device		mcd0	at isa? port 0x300 irq 10
1508# for the Sony CDU31/33A CDROM
1509device		scd0	at isa? port 0x230
1510# for the SoundBlaster 16 multicd - up to 4 devices
1511controller      matcd0  at isa? port 0x230
1512device		wt0	at isa? port 0x300 irq 5 drq 1
1513device		ctx0	at isa? port 0x230 iomem 0xd0000
1514device		spigot0 at isa? port 0xad6 irq 15 iomem 0xee000
1515device		apm0	at nexus? 
1516device		gp0	at isa? port 0x2c0
1517device		gsc0	at isa? port IO_GSC1 drq 3
1518device		joy0	at isa? port IO_GAME
1519device		cy0	at isa? irq 10 iomem 0xd4000 iosiz 0x2000
1520options 	CY_PCI_FASTINTR		# Use with cy_pci unless irq is shared
1521device		dgb0	at isa? port 0x220 iomem 0xfc000 iosiz ?
1522options 	NDGBPORTS=16		# Defaults to 16*NDGB
1523device		dgm0	at isa? port 0x104 iomem 0xd0000 iosiz ?
1524device		labpc0	at isa? port 0x260 irq 5
1525device          rc0     at isa? port 0x220 irq 12
1526device          rp0     at isa? port 0x280
1527# the port and irq for tw0 are fictitious
1528device          tw0     at isa? port 0x380 irq 11
1529device		si0	at isa? iomem 0xd0000 irq 12
1530device		asc0	at isa? port IO_ASC1 drq 3 irq 10
1531device		stl0	at isa? port 0x2a0 irq 10
1532device		stli0	at isa? port 0x2a0 iomem 0xcc000 flags 23 iosiz 0x1000
1533# You are unlikely to have the hardware for loran0 <phk@FreeBSD.org>
1534device		loran0	at isa? port ? irq 5
1535# HOT1 Xilinx 6200 card (www.vcc.com)
1536device		xrpu0
1537
1538#
1539# EISA devices:
1540#
1541# The EISA bus device is eisa0.  It provides auto-detection and
1542# configuration support for all devices on the EISA bus.
1543#
1544# The `ahb' device provides support for the Adaptec 174X adapter.
1545#
1546# The `ahc' device provides support for the Adaptec 274X and 284X
1547# adapters.  The 284X, although a VLB card responds to EISA probes.
1548#
1549# fea: DEC DEFEA EISA FDDI adapter
1550#
1551controller	eisa0
1552controller	ahb0
1553controller	ahc0
1554device		fea0
1555
1556# The aic7xxx driver will attempt to use memory mapped I/O for all PCI
1557# controllers that have it configured only if this option is set. Unfortunately,
1558# this doesn't work on some motherboards, which prevents it from being the
1559# default.
1560options AHC_ALLOW_MEMIO
1561
1562# By default, only 10 EISA slots are probed, since the slot numbers
1563# above clash with the configuration address space of the PCI subsystem,
1564# and the EISA probe is not very smart about this.  This is sufficient
1565# for most machines, but in particular the HP NetServer LC series comes
1566# with an onboard AIC7770 dual-channel SCSI controller on EISA slot #11,
1567# thus you need to bump this figure to 12 for them.
1568options EISA_SLOTS=12
1569
1570#
1571# MII bus support is required for some PCI 10/100 ethernet NICs,
1572# namely those which use MII-compliant transceivers or implement
1573# tranceiver control interfaces that operate like an MII. Adding
1574# "controller miibus0" to the kernel config pulls in support for
1575# the generic miibus API and all of the PHY drivers, including a
1576# generic one for PHYs that aren't specifically handled by an
1577# individual driver.
1578controller	miibus0
1579
1580#
1581# PCI devices & PCI options:
1582#
1583# The main PCI bus device is `pci'.  It provides auto-detection and
1584# configuration support for all devices on the PCI bus, using either
1585# configuration mode defined in the PCI specification.
1586#
1587# The `ahc' device provides support for the Adaptec 29/3940(U)(W)
1588# and motherboard based AIC7870/AIC7880 adapters.
1589#
1590# The `amd' device provides support for the AMD 53C974 SCSI host
1591# adapter chip as found on devices such as the Tekram DC-390(T).
1592#
1593# The `ncr' device provides support for the NCR 53C810 and 53C825
1594# self-contained SCSI host adapters.
1595#
1596# The `isp' device provides support for the Qlogic ISP 1020, 1040
1597# nd 1040B PCI SCSI host adapters, as well as the Qlogic ISP 2100
1598# FC/AL Host Adapter.
1599#
1600# The `al' device provides support for PCI fast ethernet adapters
1601# based on the ADMtek Inc. AL981 "Comet" and the AN985 "Centaur" chips.
1602#
1603# The `ax' device provides support for PCI fast ethernet adapters
1604# based on the ASIX Electronics AX88140A chip, including the Alfa
1605# Inc. GFC2204.
1606#
1607# The `de' device provides support for the Digital Equipment DC21040
1608# self-contained Ethernet adapter.
1609#
1610# The `dm' device provides support for PCI fast ethernet adapters
1611# based on the the Davicom DM9100 and DM9102 controller chips, including
1612# the Jaton Corporation XPressNet.
1613# 
1614# The `fxp' device provides support for the Intel EtherExpress Pro/100B
1615# PCI Fast Ethernet adapters.
1616#
1617# The `mx' device provides support for various fast ethernet adapters
1618# based on the Macronix 98713, 987615 and 98725 series chips.
1619#
1620# The `pn' device provides support for various fast ethernet adapters
1621# based on the Lite-On 82c168 and 82c169 PNIC chips, including the
1622# LinkSys LNE100TX, the NetGear FA310TX rev. D1 and the Matrox
1623# FastNIC 10/100.
1624#
1625# The 'rl' device provides support for PCI fast ethernet adapters based
1626# on the RealTek 8129/8139 chipset. Note that the RealTek driver defaults
1627# to using programmed I/O to do register accesses because memory mapped
1628# mode seems to cause severe lockups on SMP hardware. This driver also
1629# supports the Accton EN1207D `Cheetah' adapter, which uses a chip called
1630# the MPX 5030/5038, which is either a RealTek in disguise or a RealTek
1631# workalike.
1632#
1633# The 'sf' device provides support for Adaptec Duralink PCI fast
1634# ethernet adapters based on the Adaptec AIC-6915 "starfire" controller.
1635# This includes dual and quad port cards, as well as one 100baseFX card.
1636# Most of these are 64-bit PCI devices, except for one single port
1637# card which is 32-bit.
1638#
1639# The 'ste' device provides support for adapters based on the Sundance
1640# Technologies ST201 PCI fast ethernet controller. This includes the
1641# D-Link DFE-550TX.
1642#
1643# The 'sis' device provides support for adapters based on the Silicon
1644# Integrated Systems SiS 900 and SiS 7016 PCI fast ethernet controller
1645# chips.
1646#
1647# The 'sk' device provides support for the SysKonnect SK-984x series
1648# PCI gigabit ethernet NICs. This includes the SK-9841 and SK-9842
1649# single port cards (single mode and multimode fiber) and the
1650# SK-9843 and SK-9844 dual port cards (also single mode and multimode).
1651# The driver will autodetect the number of ports on the card and
1652# attach each one as a separate network interface.
1653#
1654# The 'ti' device provides support for PCI gigabit ethernet NICs based
1655# on the Alteon Networks Tigon 1 and Tigon 2 chipsets. This includes the
1656# Alteon AceNIC, the 3Com 3c985, the Netgear GA620 and various others.
1657# Note that you will probably want to bump up NMBCLUSTERS a lot to use
1658# this driver.
1659#
1660# The 'tl' device provides support for the Texas Instruments TNETE100
1661# series 'ThunderLAN' cards and integrated ethernet controllers. This
1662# includes several Compaq Netelligent 10/100 cards and the built-in
1663# ethernet controllers in several Compaq Prosignia, Proliant and
1664# Deskpro systems. It also supports several Olicom 10Mbps and 10/100
1665# boards.
1666#
1667# The `tx' device provides support for the SMC 9432TX cards.
1668#
1669# The `vr' device provides support for various fast ethernet adapters
1670# based on the VIA Technologies VT3043 `Rhine I' and VT86C100A `Rhine II'
1671# chips, including the D-Link DFE530TX, the Hawking Technologies PN102TX,
1672# and the AOpen/Acer ALN-320.
1673#
1674# The `vx' device provides support for the 3Com 3C590 and 3C595
1675# early support
1676#
1677# The `wb' device provides support for various fast ethernet adapters
1678# based on the Winbond W89C840F chip. Note: this is not the same as
1679# the Winbond W89C940F, which is an NE2000 clone.
1680#
1681# The `xl' device provides support for the 3Com 3c900, 3c905 and
1682# 3c905B (Fast) Etherlink XL cards and integrated controllers. This
1683# includes the integrated 3c905B-TX chips in certain Dell Optiplex and
1684# Dell Precision desktop machines and the integrated 3c905-TX chips
1685# in Dell Latitude laptop docking stations.
1686#
1687# The `fpa' device provides support for the Digital DEFPA PCI FDDI
1688# adapter. pseudo-device fddi is also needed.
1689#
1690# The `meteor' device is a PCI video capture board. It can also have the
1691# following options:
1692#   options METEOR_ALLOC_PAGES=xxx	preallocate kernel pages for data entry
1693#	figure (ROWS*COLUMN*BYTES_PER_PIXEL*FRAME+PAGE_SIZE-1)/PAGE_SIZE
1694#   options METEOR_DEALLOC_PAGES	remove all allocated pages on close(2)
1695#   options METEOR_DEALLOC_ABOVE=xxx	remove all allocated pages above the
1696#	specified amount. If this value is below the allocated amount no action
1697#	taken
1698#   options METEOR_SYSTEM_DEFAULT={METEOR_PAL|METEOR_NTSC|METEOR_SECAM}, used
1699#	for initialization of fps routine when a signal is not present.
1700#
1701# The 'bktr' device is a PCI video capture device using the Brooktree 
1702# bt848/bt848a/bt849a/bt878/bt879 chipset. When used with a TV Tuner it forms a
1703# TV card, eg Miro PC/TV, Hauppauge WinCast/TV WinTV, VideoLogic Captivator,
1704# Intel Smart Video III, AverMedia, IMS Turbo, FlyVideo. 
1705#
1706# options OVERRIDE_CARD=xxx
1707# options OVERRIDE_TUNER=xxx
1708# options OVERRIDE_MSP=1
1709# options OVERRIDE_DBX=1
1710# These options can be used to override the auto detection
1711# The current values for xxx are found in /usr/src/sys/pci/brooktree848.c
1712# Using sysctl(8) run-time overrides on a per-card basis can be made
1713#
1714# options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
1715# or
1716# options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
1717# Specifes the default video capture mode.
1718# This is required for Dual Crystal (28&35Mhz) boards where PAL is used
1719# to prevent hangs during initialisation.  eg VideoLogic Captivator PCI.
1720#
1721# options BKTR_USE_PLL
1722# PAL or SECAM users who have a 28Mhz crystal (and no 35Mhz crystal)
1723# must enable PLL mode with this option. eg some new Bt878 cards.
1724#
1725# options BKTR_GPIO_ACCESS
1726# This enable IOCTLs which give user level access to the GPIO port.
1727#
1728# options BKTR_NO_MSP_RESET
1729# Prevents the MSP34xx reset. Good if you initialise the MSP in another OS first
1730#
1731# options BKTR_430_FX_MODE
1732# Switch Bt878/879 cards into Intel 430FX chipset compatibility mode.
1733#
1734# options BKTR_SIS_VIA_MODE
1735# Switch Bt878/879 cards into SIS/VIA chipset compatibility mode which is
1736# needed for some old SiS and VIA chipset motherboards.
1737# This also allows Bt878/879 chips to work on old OPTi (<1997) chipset
1738# motherboards and motherboards with bad or incomplete PCI 2.1 support.
1739# As a rough guess, old = before 1998
1740#
1741#
1742# The oltr driver supports the following Olicom PCI token-ring adapters
1743# OC-3136, OC-3137, OC-3139, OC-3140, OC-3141, OC-3540, OC-3250
1744#
1745controller	pci0
1746controller	ahc1
1747controller	amd0
1748controller	ncr0
1749controller	isp0
1750#
1751# Options for ISP
1752#
1753#	SCSI_ISP_NO_FWLOAD_MASK	- mask of isp unit numbers (obviously
1754#				  a max of 32) that you wish to disable
1755#				  to disable the loading of firmware on.
1756#	SCSI_ISP_NO_NVRAM_MASK	- mask of isp unit numbers (obviously
1757#				  a max of 32) that you wish to disable
1758#				  them picking up information from NVRAM
1759#				  (for broken cards you can't fix the NVRAM
1760#				  on- very rare, or for systems you can't
1761#				  change NVRAM on (e.g. alpha) and you don't
1762#				  like what's in there)
1763#	SCSI_ISP_PREFER_MEM_MAP	- control preference for using memory mappings
1764#				  instead of I/O space mappings. It defaults
1765#				  to 1 for i386, 0 for alpha. Set to 1 to
1766#				  unconditionally prefer mapping memory,
1767#				  else it will use I/O space mappings. Of
1768#				  course, this can fail if the PCI implement-
1769#				  ation doesn't support what you want.
1770#
1771#	SCSI_ISP_FCDUPLEX	- mask of isp unit numbers (obviously
1772#				  a max of 32) that you wish to set fibre
1773#				  channel full duplex mode on.
1774#				  to disable the loading of firmware on.
1775#	SCSI_ISP_FABRIC		  enable loading of Fabric f/w flavor (2100).
1776#	SCSI_ISP_SCCLUN		  enable loading of expanded lun f/w (2100).
1777#
1778#	ISP_DISABLE_1020_SUPPORT	Disable support for 1020/1040 cards
1779#	ISP_DISABLE_1080_SUPPORT	Disable support for 1080/1240 cards
1780#	ISP_DISABLE_2100_SUPPORT	Disable support for 2100 cards
1781#	(these really just to save code space)
1782#	(use of all three will cause the driver to not compile)
1783options SCSI_ISP_NO_FWLOAD_MASK=0x12	# disable FW load for isp1 and isp4
1784options SCSI_ISP_NO_NVRAM_MASK=0x1	# disable NVRAM for isp0
1785options SCSI_ISP_PREFER_MEM_MAP=0	# prefer I/O mapping
1786options SCSI_ISP_FCDUPLEX=0x4		# isp2 is a Fibre Channel card
1787					# we want in full duplex mode.
1788#options ISP_DISABLE_1020_SUPPORT
1789#options ISP_DISABLE_1080_SUPPORT
1790#options ISP_DISABLE_2100_SUPPORT
1791
1792device		al0
1793device		ax0
1794device		de0
1795device		dm0
1796device		fxp0
1797device		mx0
1798device		pn0
1799device		rl0
1800device		sf0
1801device		sis0
1802device		sk0
1803device		ste0
1804device		ti0
1805device		tl0
1806device		tx0
1807device		vr0
1808device		vx0
1809device		wb0
1810device		xl0
1811device		fpa0
1812device		meteor0
1813#The oltr driver in the ISA section will also find PCI cards.
1814#device		oltr0
1815
1816
1817# Brooktree driver has been ported to the new I2C framework. Thus,
1818# you'll need to have the following 3 lines in the kernel config.
1819#     controller smbus0
1820#     controller iicbus0
1821#     controller iicbb0
1822# The iic and smb devices are only needed if you want to control other
1823# I2C slaves connected to the external connector of some cards.
1824#
1825device		bktr0
1826
1827#
1828# PCI options
1829#
1830#options 	PCI_QUIET	#quiets PCI code on chipset settings
1831
1832#
1833# PCCARD/PCMCIA
1834#
1835# card: pccard slots
1836# pcic: isa/pccard bridge
1837controller	pcic0 at isa?
1838controller	pcic1 at isa?
1839controller	card0
1840
1841# You may need to reset all pccards after resuming
1842options 	PCIC_RESUME_RESET	# reset after resume
1843
1844#
1845# Laptop/Notebook options:
1846#
1847# See also:
1848#  apm under `Miscellaneous hardware'
1849# above.
1850
1851# For older notebooks that signal a powerfail condition (external
1852# power supply dropped, or battery state low) by issuing an NMI:
1853
1854options 	POWERFAIL_NMI	# make it beep instead of panicing
1855
1856#
1857# SMB bus
1858#
1859# System Management Bus support provided by the 'smbus' device.
1860#
1861# Supported devices:
1862# smb	standard io
1863#
1864# Supported interfaces:
1865# iicsmb I2C to SMB bridge with any iicbus interface
1866# bktr	brooktree848 I2C hardware interface
1867# intpm	Intel PIIX4 Power Management Unit
1868# alpm	Acer Aladdin-IV/V/Pro2 Power Management Unit
1869#
1870controller smbus0
1871controller intpm0
1872controller alpm0
1873
1874device smb0	at smbus?
1875
1876#
1877# I2C Bus
1878#
1879# Philips i2c bus support is provided by the `iicbus' device.
1880#
1881# Supported devices:
1882# ic	i2c network interface
1883# iic	i2c standard io
1884# iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
1885#
1886# Supported interfaces:
1887# pcf	Philips PCF8584 ISA-bus controller
1888# bktr	brooktree848 I2C software interface
1889#
1890# Other:
1891# iicbb	generic I2C bit-banging code (needed by lpbb, bktr)
1892#
1893controller iicbus0
1894controller iicbb0
1895
1896device ic0	at iicbus?
1897device iic0	at iicbus?
1898device iicsmb0	at iicbus?
1899
1900controller pcf0	at isa? port 0x320 irq 5
1901
1902# ISDN4BSD section
1903#
1904# see /usr/share/examples/isdn/ROADMAP for an introduction to isdn4bsd.
1905#
1906# i4b passive ISDN cards support (isic - I4b Siemens Isdn Chipset driver)
1907# note that the ``options'' and ``device'' lines must BOTH be defined !
1908#
1909# Non-PnP Cards:
1910# --------------
1911#
1912# Teles S0/8 or Niccy 1008
1913options TEL_S0_8
1914#device	isic0 at isa? iomem 0xd0000 irq 5 flags 1
1915#
1916# Teles S0/16 or Creatix ISDN-S0 or Niccy 1016
1917options TEL_S0_16
1918#device	isic0 at isa? port 0xd80 iomem 0xd0000 irq 5 flags 2
1919#
1920# Teles S0/16.3 
1921options TEL_S0_16_3
1922#device	isic0 at isa? port 0xd80 irq 5 flags 3
1923#
1924# AVM A1 or AVM Fritz!Card
1925options AVM_A1
1926#device	isic0 at isa? port 0x340 irq 5 flags 4
1927#
1928# USRobotics Sportster ISDN TA intern
1929options USR_STI
1930#device isic0 at isa? port 0x268 irq 5 flags 7
1931#
1932# ITK ix1 Micro ( < V.3, non-PnP version )
1933options ITKIX1
1934#device isic0 at isa? port 0x398 irq 10 flags 18
1935#
1936# ELSA PCC-16
1937options "ELSA_PCC16"
1938#device isic0 at isa? port 0x360 irq 10 flags 19
1939#
1940# PnP-Cards:
1941# ----------
1942#
1943# Teles S0/16.3 PnP
1944options TEL_S0_16_3_P
1945#device	isic0 at isa? port ? irq ?
1946#
1947# Creatix ISDN-S0 P&P
1948options CRTX_S0_P
1949#device	isic0 at isa? port ? irq ?
1950#
1951# Dr. Neuhaus Niccy Go@
1952options DRN_NGO
1953#device	isic0 at isa? port ? irq ?
1954#
1955# Sedlbauer Win Speed
1956options SEDLBAUER
1957#device	isic0 at isa? port ? irq ?
1958#
1959# Dynalink IS64PH
1960options DYNALINK
1961#device	isic0 at isa? port ? irq ?
1962#
1963# ELSA QuickStep 1000pro ISA
1964options ELSA_QS1ISA
1965#device	isic0 at isa? port ? irq ?
1966#
1967# ITK ix1 Micro ( V.3, PnP version )
1968options "ITKIX1"
1969#device isic0 at isa? port ? irq ?
1970#
1971# AVM Fritz!Card PnP
1972options "AVM_PNP"  
1973#device isic0 at isa? port ? irq ?
1974#
1975# Siemens I-Surf 2.0 
1976options "SIEMENS_ISURF2"  
1977#device isic0 at isa? port ? irq ?
1978#
1979# PCI-Cards:
1980# ----------
1981#
1982# ELSA QuickStep 1000pro PCI
1983options ELSA_QS1PCI
1984#device  isic0
1985#
1986# AVM Fritz!Card PCI
1987options "AVM_A1_PCI" 
1988#device  isic0
1989#
1990# PCMCIA-Cards:
1991# -------------
1992#
1993# AVM PCMCIA Fritz!Card
1994options AVM_A1_PCMCIA
1995device	isic0 at isa? port 0x340 irq 5 flags 10
1996#
1997# Active Cards:
1998# -------------
1999#
2000# Stollmann Tina-dd control device
2001device tina0 at isa? port 0x260 irq 10
2002#
2003# ISDN Protocol Stack
2004# -------------------
2005# 
2006# Q.921 / layer 2 - i4b passive cards D channel handling
2007pseudo-device	"i4bq921"
2008#
2009# Q.931 / layer 3 - i4b passive cards D channel handling
2010pseudo-device	"i4bq931"
2011#
2012# layer 4 - i4b common passive and active card handling
2013pseudo-device	"i4b"
2014#
2015# ISDN devices
2016# ------------
2017#
2018# userland driver to do ISDN tracing (for passive cards only)
2019pseudo-device   "i4btrc"	4
2020#
2021# userland driver to control the whole thing
2022pseudo-device   "i4bctl"
2023#
2024# userland driver for access to raw B channel
2025pseudo-device   "i4brbch"       4
2026#
2027# userland driver for telephony
2028pseudo-device   "i4btel"        2
2029#
2030# network driver for IP over raw HDLC ISDN
2031pseudo-device   "i4bipr"	4
2032# enable VJ header compression detection for ipr i/f
2033options 	IPR_VJ
2034#
2035# network driver for sync PPP over ISDN
2036pseudo-device	"i4bisppp"	4
2037
2038
2039# Parallel-Port Bus
2040#
2041# Parallel port bus support is provided by the `ppbus' device.
2042# Multiple devices may be attached to the parallel port, devices
2043# are automatically probed and attached when found.
2044#
2045# Supported devices:
2046# vpo	Iomega Zip Drive
2047#	Requires SCSI disk support ('scbus' and 'da'), best
2048#	performance is achieved with ports in EPP 1.9 mode.
2049# lpt	Parallel Printer
2050# plip	Parallel network interface
2051# ppi	General-purpose I/O ("Geek Port") + IEEE1284 I/O
2052# pps	Pulse per second Timing Interface
2053# lpbb	Philips official parallel port I2C bit-banging interface
2054#
2055# Supported interfaces:
2056# ppc	ISA-bus parallel port interfaces.  
2057#
2058
2059options 	DEBUG_1284	# IEEE1284 signaling protocol debug
2060options 	PERIPH_1284	# Makes your computer act as a IEEE1284
2061				# compliant peripheral
2062options 	DONTPROBE_1284	# Avoid boot detection of PnP parallel devices
2063options 	VP0_DEBUG	# ZIP/ZIP+ debug
2064options 	LPT_DEBUG	# Printer driver debug
2065options 	PPC_DEBUG	# Parallel chipset level debug
2066options 	PLIP_DEBUG	# Parallel network IP interface debug
2067
2068controller	ppbus0
2069controller	vpo0	at ppbus?
2070device		lpt0	at ppbus?
2071device		plip0	at ppbus?
2072device		ppi0	at ppbus?
2073device		pps0	at ppbus?
2074device		lpbb0	at ppbus?
2075
2076device		ppc0	at isa? port? irq 7
2077
2078# Kernel BOOTP support 
2079
2080options 	BOOTP		# Use BOOTP to obtain IP address/hostname
2081options 	BOOTP_NFSROOT	# NFS mount root filesystem using BOOTP info
2082options 	BOOTP_NFSV3	# Use NFS v3 to NFS mount root
2083options 	BOOTP_COMPAT	# Workaround for broken bootp daemons.
2084options 	BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
2085
2086#
2087# Add tie-ins for a hardware watchdog.  This only enable the hooks;
2088# the user must still supply the actual driver.
2089#
2090options 	HW_WDOG
2091
2092#
2093# Set the number of PV entries per process.  Increasing this can
2094# stop panics related to heavy use of shared memory. However, that can
2095# (combined with large amounts of physical memory) cause panics at
2096# boot time due the kernel running out of VM space.
2097#
2098# If you're tweaking this, you might also want to increase the sysctls
2099# "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
2100#
2101# The value below is the one more than the default.
2102#
2103options         PMAP_SHPGPERPROC=201
2104
2105#
2106# Disable swapping. This option removes all code which actually performs
2107# swapping, so it's not possible to turn it back on at run-time.
2108#
2109# This is sometimes usable for systems which don't have any swap space
2110# (see also sysctls "vm.defer_swapspace_pageouts" and
2111# "vm.disable_swapspace_pageouts")
2112#
2113#options 	NO_SWAPPING
2114
2115# Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
2116# for sendfile(2) that are used to map file VM pages, and normally
2117# default to a quantity that is roughly 16*MAXUSERS+512. You would
2118# typically want about 4 of these for each simultaneous file send.
2119#
2120options 	NSFBUFS=1024
2121
2122#
2123# Enable extra debugging code for locks.  This stores the filename and
2124# line of whatever acquired the lock in the lock itself, and change a
2125# number of function calls to pass around the relevant data.  This is
2126# not at all useful unless you are debugging lock code.  Also note
2127# that it is likely to break e.g. fstat(1) unless you recompile your
2128# userland with -DDEBUG_LOCKS as well.
2129#
2130options 	DEBUG_LOCKS
2131
2132# More undocumented options for linting.
2133
2134options 	CLK_CALIBRATION_LOOP
2135options 	CLK_USE_I8254_CALIBRATION
2136options 	CLK_USE_TSC_CALIBRATION
2137options 	TIMER_FREQ="((14318182+6)/12)"
2138options 	CLUSTERDEBUG
2139options 	COMPAT_LINUX
2140options 	CPU_UPGRADE_HW_CACHE
2141options 	DEBUG
2142options 	DEBUG_VFS_LOCKS
2143#options 	DISABLE_PSE
2144options 	I586_PMC_GUPROF=0x70000
2145options 	IBCS2
2146options 	KEY
2147options 	KEY_DEBUG
2148options 	LOCKF_DEBUG
2149options 	LOUTB
2150options 	KBD_MAXRETRY=4
2151options 	KBD_MAXWAIT=6
2152options 	KBD_RESETDELAY=201
2153options 	KBDIO_DEBUG=2
2154options 	MSGMNB=2049
2155options 	MSGMNI=41
2156options 	MSGSEG=2049
2157options 	MSGSSZ=16
2158options 	MSGTQL=41
2159options 	NBUF=512
2160options 	NETATALKDEBUG
2161options 	NMBCLUSTERS=1024
2162options 	NPX_DEBUG
2163options 	PANIC_REBOOT_WAIT_TIME=16
2164options 	PSM_DEBUG=1
2165options 	SCSI_NCR_DEBUG
2166options 	SCSI_NCR_DFLT_TAGS=4
2167options 	SCSI_NCR_MAX_SYNC=10000
2168options 	SCSI_NCR_MAX_WIDE=1
2169options 	SCSI_NCR_MYADDR=7
2170options 	SEMMAP=31
2171options 	SEMMNI=11
2172options 	SEMMNS=61
2173options 	SEMMNU=31
2174options 	SEMMSL=61
2175options 	SEMOPM=101
2176options 	SEMUME=11
2177options 	SHOW_BUSYBUFS	# List buffers that prevent root unmount
2178options 	SHMALL=1025
2179options 	SHMMAX="(SHMMAXPGS*PAGE_SIZE+1)"
2180options 	SHMMAXPGS=1025
2181options 	SHMMIN=2
2182options 	SHMMNI=33
2183options 	SHMSEG=9
2184options 	SI_DEBUG
2185options 	SIMPLELOCK_DEBUG
2186options 	SPX_HACK
2187options 	VFS_BIO_DEBUG
2188options 	ENABLE_ALART
2189
2190# The 'dpt' driver provides support for DPT controllers (http://www.dpt.com/).
2191# These have hardware RAID-{0,1,5} support, and do multi-initiator I/O.
2192# The DPT controllers are commonly re-licensed under other brand-names -
2193# some controllers by Olivetti, Dec, HP, AT&T, SNI, AST, Alphatronic, NEC and
2194# Compaq are actually DPT controllers.
2195#
2196# See sys/dev/dpt for debugging and other subtle options.
2197#   DPT_VERIFY_HINTR        Performs some strict hardware interrupts testing.
2198#                           Only use if you suspect PCI bus corruption problems
2199#   DPT_RESTRICTED_FREELIST Normally, the freelist used by the DPT for queue
2200#                           will grow to accommodate increased use. This growth
2201#                           will NOT shrink.  To restrict the number of queue
2202#                           slots to exactly what the DPT can hold at one time,
2203#                           enable this option.
2204#   DPT_MEASURE_PERFORMANCE Enables a set of (semi)invasive metrics. Various
2205#                           instruments are enabled.  The tools in 
2206#                           /usr/sbin/dpt_* assume these to be enabled.
2207#   DPT_FREELIST_IS_STACK   For optimal L{1,2} CPU cache utilization, enable
2208#                           this option.  Otherwise, the transaction queue is
2209#                           a LIFO.  I cannot measure the performance gain.
2210#   DPT_HANDLE_TIMEOUTS     Normally device timeouts are handled by the DPT.
2211#                           If you ant the driver to handle timeouts, enable
2212#                           this option.  If your system is very busy, this
2213#                           option will create more trouble than solve.
2214#   DPT_TIMEOUT_FACTOR      Used to compute the excessive amount of time to
2215#                           wait when timing out with the above option.
2216#  DPT_DEBUG_xxxx           These are controllable from sys/dev/dpt/dpt.h
2217#  DPT_LOST_IRQ             When enabled, will try, once per second, to catch
2218#                           any interrupt that got lost.  Seems to help in some
2219#                           DPT-firmware/Motherboard combinations.  Minimal
2220#                           cost, great benefit.
2221#  DPT_RESET_HBA            Make "reset" actually reset the controller
2222#                           instead of fudging it.  Only enable this if you
2223#			    are 100% certain you need it.
2224#  DPT_SHUTDOWN_SLEEP       Reset controller if a request take more than
2225#                           this number of seconds.  Do NOT enable this
2226#			    unless you are really, really, really certain
2227#			    you need it.  You are advised to call Simon (the
2228#			    driver author) before setting it, and NEVER,
2229#			    EVER set it to less than 300s (5 minutes).
2230
2231controller      dpt0
2232
2233# DPT options
2234options DPT_VERIFY_HINTR
2235options DPT_RESTRICTED_FREELIST
2236#!CAM# options DPT_MEASURE_PERFORMANCE
2237options DPT_FREELIST_IS_STACK
2238#!CAM# options DPT_HANDLE_TIMEOUTS
2239options DPT_TIMEOUT_FACTOR=4
2240options DPT_INTR_DELAY=200      # Some motherboards need that
2241options DPT_LOST_IRQ
2242options DPT_RESET_HBA
2243
2244# Don't EVER set this without having talked to Simon Shapiro on the phone
2245# first.
2246options DPT_SHUTDOWN_SLEEP=500
2247
2248# USB support
2249# UHCI controller 
2250controller	uhci0
2251# OHCI controller
2252controller	ohci0
2253# General USB code (mandatory for USB)
2254controller	usb0
2255#
2256# Generic USB device driver
2257device		ugen0
2258# Human Interface Device (anything with buttons and dials)
2259device		uhid0
2260# USB keyboard
2261device		ukbd0
2262# USB printer
2263device		ulpt0
2264# USB Iomega Zip 100 Drive
2265controller	umass0
2266# USB mouse
2267device		ums0
2268#
2269
2270# debugging options for the USB subsystem
2271#
2272options 	UHCI_DEBUG
2273options 	OHCI_DEBUG
2274options 	USB_DEBUG
2275
2276options 	UGEN_DEBUG
2277options 	UHID_DEBUG
2278options 	UHUB_DEBUG
2279options 	UKBD_DEBUG
2280options 	ULPT_DEBUG
2281options 	UMASS_DEBUG
2282options 	UMS_DEBUG
2283
2284# options for ukbd:
2285options 	UKBD_DFLT_KEYMAP	# specify the built-in keymap
2286makeoptions	UKBD_DFLT_KEYMAP=it.iso
2287
2288#
2289# Embedded system options:
2290#
2291# An embedded system might want to run something other than init.
2292options 	INIT_PATH="/sbin/init:/stand/sysinstall"
2293
2294