xref: /freebsd/sys/conf/NOTES (revision 4ec234c813eed05c166859bba82c882e40826eb9)
1# $FreeBSD$
2#
3# NOTES -- Lines that can be cut/pasted into kernel and hints configs.
4#
5# Lines that begin with 'device', 'options', 'machine', 'ident', 'maxusers',
6# 'makeoptions', 'hints', etc. go into the kernel configuration that you
7# run config(8) with.
8#
9# Lines that begin with 'hint.' are NOT for config(8), they go into your
10# hints file.  See /boot/device.hints and/or the 'hints' config(8) directive.
11#
12# Please use ``make LINT'' to create an old-style LINT file if you want to
13# do kernel test-builds.
14#
15# This file contains machine independent kernel configuration notes.  For
16# machine dependent notes, look in /sys/<arch>/conf/NOTES.
17#
18
19#
20# NOTES conventions and style guide:
21#
22# Large block comments should begin and end with a line containing only a
23# comment character.
24#
25# To describe a particular object, a block comment (if it exists) should
26# come first.  Next should come device, options, and hints lines in that
27# order.  All device and option lines must be described by a comment that
28# doesn't just expand the device or option name.  Use only a concise
29# comment on the same line if possible.  Very detailed descriptions of
30# devices and subsystems belong in man pages.
31#
32# A space followed by a tab separates 'options' from an option name.  Two
33# spaces followed by a tab separate 'device' from a device name.  Comments
34# after an option or device should use one space after the comment character.
35# To comment out a negative option that disables code and thus should not be
36# enabled for LINT builds, precede 'options' with "#!".
37#
38
39#
40# This is the ``identification'' of the kernel.  Usually this should
41# be the same as the name of your kernel.
42#
43ident		LINT
44
45#
46# The `maxusers' parameter controls the static sizing of a number of
47# internal system tables by a formula defined in subr_param.c.
48# Omitting this parameter or setting it to 0 will cause the system to
49# auto-size based on physical memory.
50#
51maxusers	10
52
53# To statically compile in device wiring instead of /boot/device.hints
54#hints		"LINT.hints"		# Default places to look for devices.
55
56# Use the following to compile in values accessible to the kernel
57# through getenv() (or kenv(1) in userland). The format of the file
58# is 'variable=value', see kenv(1)
59#
60#env		"LINT.env"
61
62#
63# The `makeoptions' parameter allows variables to be passed to the
64# generated Makefile in the build area.
65#
66# CONF_CFLAGS gives some extra compiler flags that are added to ${CFLAGS}
67# after most other flags.  Here we use it to inhibit use of non-optimal
68# gcc built-in functions (e.g., memcmp).
69#
70# DEBUG happens to be magic.
71# The following is equivalent to 'config -g KERNELNAME' and creates
72# 'kernel.debug' compiled with -g debugging as well as a normal
73# 'kernel'.  Use 'make install.debug' to install the debug kernel
74# but that isn't normally necessary as the debug symbols are not loaded
75# by the kernel and are not useful there anyway.
76#
77# KERNEL can be overridden so that you can change the default name of your
78# kernel.
79#
80# MODULES_OVERRIDE can be used to limit modules built to a specific list.
81#
82makeoptions	CONF_CFLAGS=-fno-builtin  #Don't allow use of memcmp, etc.
83#makeoptions	DEBUG=-g		#Build kernel with gdb(1) debug symbols
84#makeoptions	KERNEL=foo		#Build kernel "foo" and install "/foo"
85# Only build ext2fs module plus those parts of the sound system I need.
86#makeoptions	MODULES_OVERRIDE="ext2fs sound/sound sound/driver/maestro3"
87makeoptions	DESTDIR=/tmp
88
89#
90# FreeBSD processes are subject to certain limits to their consumption
91# of system resources.  See getrlimit(2) for more details.  Each
92# resource limit has two values, a "soft" limit and a "hard" limit.
93# The soft limits can be modified during normal system operation, but
94# the hard limits are set at boot time.  Their default values are
95# in sys/<arch>/include/vmparam.h.  There are two ways to change them:
96#
97# 1.  Set the values at kernel build time.  The options below are one
98#     way to allow that limit to grow to 1GB.  They can be increased
99#     further by changing the parameters:
100#
101# 2.  In /boot/loader.conf, set the tunables kern.maxswzone,
102#     kern.maxbcache, kern.maxtsiz, kern.dfldsiz, kern.maxdsiz,
103#     kern.dflssiz, kern.maxssiz and kern.sgrowsiz.
104#
105# The options in /boot/loader.conf override anything in the kernel
106# configuration file.  See the function init_param1 in
107# sys/kern/subr_param.c for more details.
108#
109
110options 	MAXDSIZ=(1024UL*1024*1024)
111options 	MAXSSIZ=(128UL*1024*1024)
112options 	DFLDSIZ=(1024UL*1024*1024)
113
114#
115# BLKDEV_IOSIZE sets the default block size used in user block
116# device I/O.  Note that this value will be overridden by the label
117# when specifying a block device from a label with a non-0
118# partition blocksize.  The default is PAGE_SIZE.
119#
120options 	BLKDEV_IOSIZE=8192
121
122#
123# MAXPHYS and DFLTPHYS
124#
125# These are the maximal and safe 'raw' I/O block device access sizes.
126# Reads and writes will be split into MAXPHYS chunks for known good
127# devices and DFLTPHYS for the rest. Some applications have better
128# performance with larger raw I/O access sizes. Note that certain VM
129# parameters are derived from these values and making them too large
130# can make an unbootable kernel.
131#
132# The defaults are 64K and 128K respectively.
133options 	DFLTPHYS=(64*1024)
134options 	MAXPHYS=(128*1024)
135
136
137# This allows you to actually store this configuration file into
138# the kernel binary itself. See config(8) for more details.
139#
140options 	INCLUDE_CONFIG_FILE     # Include this file in kernel
141
142#
143# Compile-time defaults for various boot parameters
144#
145options 	BOOTVERBOSE=1
146options 	BOOTHOWTO=RB_MULTIPLE
147
148options 	GEOM_AES		# Don't use, use GEOM_BDE
149options 	GEOM_BDE		# Disk encryption.
150options 	GEOM_BSD		# BSD disklabels
151options 	GEOM_CACHE		# Disk cache.
152options 	GEOM_CONCAT		# Disk concatenation.
153options 	GEOM_ELI		# Disk encryption.
154options 	GEOM_FOX		# Redundant path mitigation
155options 	GEOM_GATE		# Userland services.
156options 	GEOM_JOURNAL		# Journaling.
157options 	GEOM_LABEL		# Providers labelization.
158options 	GEOM_LINUX_LVM		# Linux LVM2 volumes
159options 	GEOM_MBR		# DOS/MBR partitioning
160options 	GEOM_MIRROR		# Disk mirroring.
161options 	GEOM_MULTIPATH		# Disk multipath
162options 	GEOM_NOP		# Test class.
163options 	GEOM_PART_APM		# Apple partitioning
164options 	GEOM_PART_BSD		# BSD disklabel
165options 	GEOM_PART_EBR		# Extended Boot Records
166options 	GEOM_PART_EBR_COMPAT	# Backward compatible partition names
167options 	GEOM_PART_GPT		# GPT partitioning
168options 	GEOM_PART_LDM		# Logical Disk Manager
169options 	GEOM_PART_MBR		# MBR partitioning
170options 	GEOM_PART_PC98		# PC-9800 disk partitioning
171options 	GEOM_PART_VTOC8		# SMI VTOC8 disk label
172options 	GEOM_PC98		# NEC PC9800 partitioning
173options 	GEOM_RAID		# Soft RAID functionality.
174options 	GEOM_RAID3		# RAID3 functionality.
175options 	GEOM_SHSEC		# Shared secret.
176options 	GEOM_STRIPE		# Disk striping.
177options 	GEOM_SUNLABEL		# Sun/Solaris partitioning
178options 	GEOM_UZIP		# Read-only compressed disks
179options 	GEOM_VIRSTOR		# Virtual storage.
180options 	GEOM_VOL		# Volume names from UFS superblock
181options 	GEOM_ZERO		# Performance testing helper.
182
183#
184# The root device and filesystem type can be compiled in;
185# this provides a fallback option if the root device cannot
186# be correctly guessed by the bootstrap code, or an override if
187# the RB_DFLTROOT flag (-r) is specified when booting the kernel.
188#
189options 	ROOTDEVNAME=\"ufs:da0s2e\"
190
191
192#####################################################################
193# Scheduler options:
194#
195# Specifying one of SCHED_4BSD or SCHED_ULE is mandatory.  These options
196# select which scheduler is compiled in.
197#
198# SCHED_4BSD is the historical, proven, BSD scheduler.  It has a global run
199# queue and no CPU affinity which makes it suboptimal for SMP.  It has very
200# good interactivity and priority selection.
201#
202# SCHED_ULE provides significant performance advantages over 4BSD on many
203# workloads on SMP machines.  It supports cpu-affinity, per-cpu runqueues
204# and scheduler locks.  It also has a stronger notion of interactivity
205# which leads to better responsiveness even on uniprocessor machines.  This
206# is the default scheduler.
207#
208# SCHED_STATS is a debugging option which keeps some stats in the sysctl
209# tree at 'kern.sched.stats' and is useful for debugging scheduling decisions.
210#
211options 	SCHED_4BSD
212options 	SCHED_STATS
213#options 	SCHED_ULE
214
215#####################################################################
216# SMP OPTIONS:
217#
218# SMP enables building of a Symmetric MultiProcessor Kernel.
219
220# Mandatory:
221options 	SMP			# Symmetric MultiProcessor Kernel
222
223# MAXCPU defines the maximum number of CPUs that can boot in the system.
224# A default value should be already present, for every architecture.
225options 	MAXCPU=32
226
227# MAXMEMDOM defines the maximum number of memory domains that can boot in the
228# system.  A default value should already be defined by every architecture.
229options 	MAXMEMDOM=1
230
231# ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin
232# if the thread that currently owns the mutex is executing on another
233# CPU.  This behavior is enabled by default, so this option can be used
234# to disable it.
235options 	NO_ADAPTIVE_MUTEXES
236
237# ADAPTIVE_RWLOCKS changes the behavior of reader/writer locks to spin
238# if the thread that currently owns the rwlock is executing on another
239# CPU.  This behavior is enabled by default, so this option can be used
240# to disable it.
241options 	NO_ADAPTIVE_RWLOCKS
242
243# ADAPTIVE_SX changes the behavior of sx locks to spin if the thread that
244# currently owns the sx lock is executing on another CPU.
245# This behavior is enabled by default, so this option can be used to
246# disable it.
247options 	NO_ADAPTIVE_SX
248
249# MUTEX_NOINLINE forces mutex operations to call functions to perform each
250# operation rather than inlining the simple cases.  This can be used to
251# shrink the size of the kernel text segment.  Note that this behavior is
252# already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
253# and WITNESS options.
254options 	MUTEX_NOINLINE
255
256# RWLOCK_NOINLINE forces rwlock operations to call functions to perform each
257# operation rather than inlining the simple cases.  This can be used to
258# shrink the size of the kernel text segment.  Note that this behavior is
259# already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
260# and WITNESS options.
261options 	RWLOCK_NOINLINE
262
263# SX_NOINLINE forces sx lock operations to call functions to perform each
264# operation rather than inlining the simple cases.  This can be used to
265# shrink the size of the kernel text segment.  Note that this behavior is
266# already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
267# and WITNESS options.
268options 	SX_NOINLINE
269
270# SMP Debugging Options:
271#
272# CALLOUT_PROFILING enables rudimentary profiling of the callwheel data
273#	  structure used as backend in callout(9).
274# PREEMPTION allows the threads that are in the kernel to be preempted by
275#	  higher priority [interrupt] threads.  It helps with interactivity
276#	  and allows interrupt threads to run sooner rather than waiting.
277#	  WARNING! Only tested on amd64 and i386.
278# FULL_PREEMPTION instructs the kernel to preempt non-realtime kernel
279#	  threads.  Its sole use is to expose race conditions and other
280#	  bugs during development.  Enabling this option will reduce
281#	  performance and increase the frequency of kernel panics by
282#	  design.  If you aren't sure that you need it then you don't.
283#	  Relies on the PREEMPTION option.  DON'T TURN THIS ON.
284# MUTEX_DEBUG enables various extra assertions in the mutex code.
285# SLEEPQUEUE_PROFILING enables rudimentary profiling of the hash table
286#	  used to hold active sleep queues as well as sleep wait message
287#	  frequency.
288# TURNSTILE_PROFILING enables rudimentary profiling of the hash table
289#	  used to hold active lock queues.
290# UMTX_PROFILING enables rudimentary profiling of the hash table used
291	  to hold active lock queues.
292# WITNESS enables the witness code which detects deadlocks and cycles
293#         during locking operations.
294# WITNESS_KDB causes the witness code to drop into the kernel debugger if
295#	  a lock hierarchy violation occurs or if locks are held when going to
296#	  sleep.
297# WITNESS_SKIPSPIN disables the witness checks on spin mutexes.
298options 	PREEMPTION
299options 	FULL_PREEMPTION
300options 	MUTEX_DEBUG
301options 	WITNESS
302options 	WITNESS_KDB
303options 	WITNESS_SKIPSPIN
304
305# LOCK_PROFILING - Profiling locks.  See LOCK_PROFILING(9) for details.
306options 	LOCK_PROFILING
307# Set the number of buffers and the hash size.  The hash size MUST be larger
308# than the number of buffers.  Hash size should be prime.
309options 	MPROF_BUFFERS="1536"
310options 	MPROF_HASH_SIZE="1543"
311
312# Profiling for the callout(9) backend.
313options 	CALLOUT_PROFILING
314
315# Profiling for internal hash tables.
316options 	SLEEPQUEUE_PROFILING
317options 	TURNSTILE_PROFILING
318options 	UMTX_PROFILING
319
320
321#####################################################################
322# COMPATIBILITY OPTIONS
323
324#
325# Implement system calls compatible with 4.3BSD and older versions of
326# FreeBSD.  You probably do NOT want to remove this as much current code
327# still relies on the 4.3 emulation.  Note that some architectures that
328# are supported by FreeBSD do not include support for certain important
329# aspects of this compatibility option, namely those related to the
330# signal delivery mechanism.
331#
332options 	COMPAT_43
333
334# Old tty interface.
335options 	COMPAT_43TTY
336
337# Note that as a general rule, COMPAT_FREEBSD<n> depends on
338# COMPAT_FREEBSD<n+1>, COMPAT_FREEBSD<n+2>, etc.
339
340# Enable FreeBSD4 compatibility syscalls
341options 	COMPAT_FREEBSD4
342
343# Enable FreeBSD5 compatibility syscalls
344options 	COMPAT_FREEBSD5
345
346# Enable FreeBSD6 compatibility syscalls
347options 	COMPAT_FREEBSD6
348
349# Enable FreeBSD7 compatibility syscalls
350options 	COMPAT_FREEBSD7
351
352#
353# These three options provide support for System V Interface
354# Definition-style interprocess communication, in the form of shared
355# memory, semaphores, and message queues, respectively.
356#
357options 	SYSVSHM
358options 	SYSVSEM
359options 	SYSVMSG
360
361
362#####################################################################
363# DEBUGGING OPTIONS
364
365#
366# Compile with kernel debugger related code.
367#
368options 	KDB
369
370#
371# Print a stack trace of the current thread on the console for a panic.
372#
373options 	KDB_TRACE
374
375#
376# Don't enter the debugger for a panic. Intended for unattended operation
377# where you may want to enter the debugger from the console, but still want
378# the machine to recover from a panic.
379#
380options 	KDB_UNATTENDED
381
382#
383# Enable the ddb debugger backend.
384#
385options 	DDB
386
387#
388# Print the numerical value of symbols in addition to the symbolic
389# representation.
390#
391options 	DDB_NUMSYM
392
393#
394# Enable the remote gdb debugger backend.
395#
396options 	GDB
397
398#
399# SYSCTL_DEBUG enables a 'sysctl' debug tree that can be used to dump the
400# contents of the registered sysctl nodes on the console.  It is disabled by
401# default because it generates excessively verbose console output that can
402# interfere with serial console operation.
403#
404options 	SYSCTL_DEBUG
405
406#
407# Enable textdump by default, this disables kernel core dumps.
408#
409options		TEXTDUMP_PREFERRED
410
411#
412# Enable extra debug messages while performing textdumps.
413#
414options		TEXTDUMP_VERBOSE
415
416#
417# NO_SYSCTL_DESCR omits the sysctl node descriptions to save space in the
418# resulting kernel.
419options		NO_SYSCTL_DESCR
420
421#
422# MALLOC_DEBUG_MAXZONES enables multiple uma zones for malloc(9)
423# allocations that are smaller than a page.  The purpose is to isolate
424# different malloc types into hash classes, so that any buffer
425# overruns or use-after-free will usually only affect memory from
426# malloc types in that hash class.  This is purely a debugging tool;
427# by varying the hash function and tracking which hash class was
428# corrupted, the intersection of the hash classes from each instance
429# will point to a single malloc type that is being misused.  At this
430# point inspection or memguard(9) can be used to catch the offending
431# code.
432#
433options 	MALLOC_DEBUG_MAXZONES=8
434
435#
436# DEBUG_MEMGUARD builds and enables memguard(9), a replacement allocator
437# for the kernel used to detect modify-after-free scenarios.  See the
438# memguard(9) man page for more information on usage.
439#
440options 	DEBUG_MEMGUARD
441
442#
443# DEBUG_REDZONE enables buffer underflows and buffer overflows detection for
444# malloc(9).
445#
446options 	DEBUG_REDZONE
447
448#
449# KTRACE enables the system-call tracing facility ktrace(2).  To be more
450# SMP-friendly, KTRACE uses a worker thread to process most trace events
451# asynchronously to the thread generating the event.  This requires a
452# pre-allocated store of objects representing trace events.  The
453# KTRACE_REQUEST_POOL option specifies the initial size of this store.
454# The size of the pool can be adjusted both at boottime and runtime via
455# the kern.ktrace_request_pool tunable and sysctl.
456#
457options 	KTRACE			#kernel tracing
458options 	KTRACE_REQUEST_POOL=101
459
460#
461# KTR is a kernel tracing facility imported from BSD/OS.  It is
462# enabled with the KTR option.  KTR_ENTRIES defines the number of
463# entries in the circular trace buffer; it may be an arbitrary number.
464# KTR_BOOT_ENTRIES defines the number of entries during the early boot,
465# before malloc(9) is functional.
466# KTR_COMPILE defines the mask of events to compile into the kernel as
467# defined by the KTR_* constants in <sys/ktr.h>.  KTR_MASK defines the
468# initial value of the ktr_mask variable which determines at runtime
469# what events to trace.  KTR_CPUMASK determines which CPU's log
470# events, with bit X corresponding to CPU X.  The layout of the string
471# passed as KTR_CPUMASK must match a series of bitmasks each of them
472# separated by the "," character (ie:
473# KTR_CPUMASK=0xAF,0xFFFFFFFFFFFFFFFF).  KTR_VERBOSE enables
474# dumping of KTR events to the console by default.  This functionality
475# can be toggled via the debug.ktr_verbose sysctl and defaults to off
476# if KTR_VERBOSE is not defined.  See ktr(4) and ktrdump(8) for details.
477#
478options 	KTR
479options 	KTR_BOOT_ENTRIES=1024
480options 	KTR_ENTRIES=(128*1024)
481options 	KTR_COMPILE=(KTR_INTR|KTR_PROC)
482options 	KTR_MASK=KTR_INTR
483options 	KTR_CPUMASK=0x3
484options 	KTR_VERBOSE
485
486#
487# ALQ(9) is a facility for the asynchronous queuing of records from the kernel
488# to a vnode, and is employed by services such as ktr(4) to produce trace
489# files based on a kernel event stream.  Records are written asynchronously
490# in a worker thread.
491#
492options 	ALQ
493options 	KTR_ALQ
494
495#
496# The INVARIANTS option is used in a number of source files to enable
497# extra sanity checking of internal structures.  This support is not
498# enabled by default because of the extra time it would take to check
499# for these conditions, which can only occur as a result of
500# programming errors.
501#
502options 	INVARIANTS
503
504#
505# The INVARIANT_SUPPORT option makes us compile in support for
506# verifying some of the internal structures.  It is a prerequisite for
507# 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
508# called.  The intent is that you can set 'INVARIANTS' for single
509# source files (by changing the source file or specifying it on the
510# command line) if you have 'INVARIANT_SUPPORT' enabled.  Also, if you
511# wish to build a kernel module with 'INVARIANTS', then adding
512# 'INVARIANT_SUPPORT' to your kernel will provide all the necessary
513# infrastructure without the added overhead.
514#
515options 	INVARIANT_SUPPORT
516
517#
518# The DIAGNOSTIC option is used to enable extra debugging information
519# from some parts of the kernel.  As this makes everything more noisy,
520# it is disabled by default.
521#
522options 	DIAGNOSTIC
523
524#
525# REGRESSION causes optional kernel interfaces necessary only for regression
526# testing to be enabled.  These interfaces may constitute security risks
527# when enabled, as they permit processes to easily modify aspects of the
528# run-time environment to reproduce unlikely or unusual (possibly normally
529# impossible) scenarios.
530#
531options 	REGRESSION
532
533#
534# This option lets some drivers co-exist that can't co-exist in a running
535# system.  This is used to be able to compile all kernel code in one go for
536# quality assurance purposes (like this file, which the option takes it name
537# from.)
538#
539options 	COMPILING_LINT
540
541#
542# STACK enables the stack(9) facility, allowing the capture of kernel stack
543# for the purpose of procinfo(1), etc.  stack(9) will also be compiled in
544# automatically if DDB(4) is compiled into the kernel.
545#
546options 	STACK
547
548
549#####################################################################
550# PERFORMANCE MONITORING OPTIONS
551
552#
553# The hwpmc driver that allows the use of in-CPU performance monitoring
554# counters for performance monitoring.  The base kernel needs to be configured
555# with the 'options' line, while the hwpmc device can be either compiled
556# in or loaded as a loadable kernel module.
557#
558# Additional configuration options may be required on specific architectures,
559# please see hwpmc(4).
560
561device		hwpmc			# Driver (also a loadable module)
562options 	HWPMC_HOOKS		# Other necessary kernel hooks
563
564
565#####################################################################
566# NETWORKING OPTIONS
567
568#
569# Protocol families
570#
571options 	INET			#Internet communications protocols
572options 	INET6			#IPv6 communications protocols
573
574options 	ROUTETABLES=2		# allocated fibs up to 65536. default is 1.
575					# but that would be a bad idea as they are large.
576
577options 	TCP_OFFLOAD		# TCP offload support.
578
579# In order to enable IPSEC you MUST also add device crypto to
580# your kernel configuration
581options 	IPSEC			#IP security (requires device crypto)
582#options 	IPSEC_DEBUG		#debug for IP security
583#
584# #DEPRECATED#
585# Set IPSEC_FILTERTUNNEL to change the default of the sysctl to force packets
586# coming through a tunnel to be processed by any configured packet filtering
587# twice. The default is that packets coming out of a tunnel are _not_ processed;
588# they are assumed trusted.
589#
590# IPSEC history is preserved for such packets, and can be filtered
591# using ipfw(8)'s 'ipsec' keyword, when this option is enabled.
592#
593#options 	IPSEC_FILTERTUNNEL	#filter ipsec packets from a tunnel
594#
595# Set IPSEC_NAT_T to enable NAT-Traversal support.  This enables
596# optional UDP encapsulation of ESP packets.
597#
598options		IPSEC_NAT_T		#NAT-T support, UDP encap of ESP
599
600options 	IPX			#IPX/SPX communications protocols
601
602options 	NETATALK		#Appletalk communications protocols
603options 	NETATALKDEBUG		#Appletalk debugging
604
605#
606# SMB/CIFS requester
607# NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
608# options.
609options 	NETSMB			#SMB/CIFS requester
610
611# mchain library. It can be either loaded as KLD or compiled into kernel
612options 	LIBMCHAIN
613
614# libalias library, performing NAT
615options 	LIBALIAS
616
617# flowtable cache
618options 	FLOWTABLE
619
620#
621# SCTP is a NEW transport protocol defined by
622# RFC2960 updated by RFC3309 and RFC3758.. and
623# soon to have a new base RFC and many many more
624# extensions. This release supports all the extensions
625# including many drafts (most about to become RFC's).
626# It is the reference implementation of SCTP
627# and is quite well tested.
628#
629# Note YOU MUST have both INET and INET6 defined.
630# You don't have to enable V6, but SCTP is
631# dual stacked and so far we have not torn apart
632# the V6 and V4.. since an association can span
633# both a V6 and V4 address at the SAME time :-)
634#
635options 	SCTP
636# There are bunches of options:
637# this one turns on all sorts of
638# nastily printing that you can
639# do. It's all controlled by a
640# bit mask (settable by socket opt and
641# by sysctl). Including will not cause
642# logging until you set the bits.. but it
643# can be quite verbose.. so without this
644# option we don't do any of the tests for
645# bits and prints.. which makes the code run
646# faster.. if you are not debugging don't use.
647options 	SCTP_DEBUG
648#
649# This option turns off the CRC32c checksum. Basically,
650# you will not be able to talk to anyone else who
651# has not done this. Its more for experimentation to
652# see how much CPU the CRC32c really takes. Most new
653# cards for TCP support checksum offload.. so this
654# option gives you a "view" into what SCTP would be
655# like with such an offload (which only exists in
656# high in iSCSI boards so far). With the new
657# splitting 8's algorithm its not as bad as it used
658# to be.. but it does speed things up try only
659# for in a captured lab environment :-)
660options 	SCTP_WITH_NO_CSUM
661#
662
663#
664# All that options after that turn on specific types of
665# logging. You can monitor CWND growth, flight size
666# and all sorts of things. Go look at the code and
667# see. I have used this to produce interesting
668# charts and graphs as well :->
669#
670# I have not yet committed the tools to get and print
671# the logs, I will do that eventually .. before then
672# if you want them send me an email rrs@freebsd.org
673# You basically must have ktr(4) enabled for these
674# and you then set the sysctl to turn on/off various
675# logging bits. Use ktrdump(8) to pull the log and run
676# it through a display program.. and graphs and other
677# things too.
678#
679options 	SCTP_LOCK_LOGGING
680options 	SCTP_MBUF_LOGGING
681options 	SCTP_MBCNT_LOGGING
682options 	SCTP_PACKET_LOGGING
683options 	SCTP_LTRACE_CHUNKS
684options 	SCTP_LTRACE_ERRORS
685
686
687# altq(9). Enable the base part of the hooks with the ALTQ option.
688# Individual disciplines must be built into the base system and can not be
689# loaded as modules at this point. ALTQ requires a stable TSC so if yours is
690# broken or changes with CPU throttling then you must also have the ALTQ_NOPCC
691# option.
692options 	ALTQ
693options 	ALTQ_CBQ	# Class Based Queueing
694options 	ALTQ_RED	# Random Early Detection
695options 	ALTQ_RIO	# RED In/Out
696options 	ALTQ_HFSC	# Hierarchical Packet Scheduler
697options 	ALTQ_CDNR	# Traffic conditioner
698options 	ALTQ_PRIQ	# Priority Queueing
699options 	ALTQ_NOPCC	# Required if the TSC is unusable
700options 	ALTQ_DEBUG
701
702# netgraph(4). Enable the base netgraph code with the NETGRAPH option.
703# Individual node types can be enabled with the corresponding option
704# listed below; however, this is not strictly necessary as netgraph
705# will automatically load the corresponding KLD module if the node type
706# is not already compiled into the kernel. Each type below has a
707# corresponding man page, e.g., ng_async(8).
708options 	NETGRAPH		# netgraph(4) system
709options 	NETGRAPH_DEBUG		# enable extra debugging, this
710					# affects netgraph(4) and nodes
711# Node types
712options 	NETGRAPH_ASYNC
713options 	NETGRAPH_ATMLLC
714options 	NETGRAPH_ATM_ATMPIF
715options 	NETGRAPH_BLUETOOTH		# ng_bluetooth(4)
716options 	NETGRAPH_BLUETOOTH_BT3C		# ng_bt3c(4)
717options 	NETGRAPH_BLUETOOTH_HCI		# ng_hci(4)
718options 	NETGRAPH_BLUETOOTH_L2CAP	# ng_l2cap(4)
719options 	NETGRAPH_BLUETOOTH_SOCKET	# ng_btsocket(4)
720options 	NETGRAPH_BLUETOOTH_UBT		# ng_ubt(4)
721options 	NETGRAPH_BLUETOOTH_UBTBCMFW	# ubtbcmfw(4)
722options 	NETGRAPH_BPF
723options 	NETGRAPH_BRIDGE
724options 	NETGRAPH_CAR
725options 	NETGRAPH_CISCO
726options 	NETGRAPH_DEFLATE
727options 	NETGRAPH_DEVICE
728options 	NETGRAPH_ECHO
729options 	NETGRAPH_EIFACE
730options 	NETGRAPH_ETHER
731options 	NETGRAPH_FRAME_RELAY
732options 	NETGRAPH_GIF
733options 	NETGRAPH_GIF_DEMUX
734options 	NETGRAPH_HOLE
735options 	NETGRAPH_IFACE
736options 	NETGRAPH_IP_INPUT
737options 	NETGRAPH_IPFW
738options 	NETGRAPH_KSOCKET
739options 	NETGRAPH_L2TP
740options 	NETGRAPH_LMI
741# MPPC compression requires proprietary files (not included)
742#options 	NETGRAPH_MPPC_COMPRESSION
743options 	NETGRAPH_MPPC_ENCRYPTION
744options 	NETGRAPH_NETFLOW
745options 	NETGRAPH_NAT
746options 	NETGRAPH_ONE2MANY
747options 	NETGRAPH_PATCH
748options 	NETGRAPH_PIPE
749options 	NETGRAPH_PPP
750options 	NETGRAPH_PPPOE
751options 	NETGRAPH_PPTPGRE
752options 	NETGRAPH_PRED1
753options 	NETGRAPH_RFC1490
754options 	NETGRAPH_SOCKET
755options 	NETGRAPH_SPLIT
756options 	NETGRAPH_SPPP
757options 	NETGRAPH_TAG
758options 	NETGRAPH_TCPMSS
759options 	NETGRAPH_TEE
760options 	NETGRAPH_UI
761options 	NETGRAPH_VJC
762options 	NETGRAPH_VLAN
763
764# NgATM - Netgraph ATM
765options 	NGATM_ATM
766options 	NGATM_ATMBASE
767options 	NGATM_SSCOP
768options 	NGATM_SSCFU
769options 	NGATM_UNI
770options 	NGATM_CCATM
771
772device		mn	# Munich32x/Falc54 Nx64kbit/sec cards.
773
774# Network stack virtualization.
775#options	VIMAGE
776#options	VNET_DEBUG	# debug for VIMAGE
777
778#
779# Network interfaces:
780#  The `loop' device is MANDATORY when networking is enabled.
781device		loop
782
783#  The `ether' device provides generic code to handle
784#  Ethernets; it is MANDATORY when an Ethernet device driver is
785#  configured or token-ring is enabled.
786device		ether
787
788#  The `vlan' device implements the VLAN tagging of Ethernet frames
789#  according to IEEE 802.1Q.
790device		vlan
791
792#  The `wlan' device provides generic code to support 802.11
793#  drivers, including host AP mode; it is MANDATORY for the wi,
794#  and ath drivers and will eventually be required by all 802.11 drivers.
795device		wlan
796options 	IEEE80211_DEBUG		#enable debugging msgs
797options 	IEEE80211_AMPDU_AGE	#age frames in AMPDU reorder q's
798options 	IEEE80211_SUPPORT_MESH	#enable 802.11s D3.0 support
799options 	IEEE80211_SUPPORT_TDMA	#enable TDMA support
800
801#  The `wlan_wep', `wlan_tkip', and `wlan_ccmp' devices provide
802#  support for WEP, TKIP, and AES-CCMP crypto protocols optionally
803#  used with 802.11 devices that depend on the `wlan' module.
804device		wlan_wep
805device		wlan_ccmp
806device		wlan_tkip
807
808#  The `wlan_xauth' device provides support for external (i.e. user-mode)
809#  authenticators for use with 802.11 drivers that use the `wlan'
810#  module and support 802.1x and/or WPA security protocols.
811device		wlan_xauth
812
813#  The `wlan_acl' device provides a MAC-based access control mechanism
814#  for use with 802.11 drivers operating in ap mode and using the
815#  `wlan' module.
816#  The 'wlan_amrr' device provides AMRR transmit rate control algorithm
817device		wlan_acl
818device		wlan_amrr
819
820# Generic TokenRing
821device		token
822
823#  The `fddi' device provides generic code to support FDDI.
824device		fddi
825
826#  The `arcnet' device provides generic code to support Arcnet.
827device		arcnet
828
829#  The `sppp' device serves a similar role for certain types
830#  of synchronous PPP links (like `cx', `ar').
831device		sppp
832
833#  The `bpf' device enables the Berkeley Packet Filter.  Be
834#  aware of the legal and administrative consequences of enabling this
835#  option.  DHCP requires bpf.
836device		bpf
837
838#  The `netmap' device implements memory-mapped access to network
839#  devices from userspace, enabling wire-speed packet capture and
840#  generation even at 10Gbit/s. Requires support in the device
841#  driver. Supported drivers are ixgbe, e1000, re.
842device		netmap
843
844#  The `disc' device implements a minimal network interface,
845#  which throws away all packets sent and never receives any.  It is
846#  included for testing and benchmarking purposes.
847device		disc
848
849# The `epair' device implements a virtual back-to-back connected Ethernet
850# like interface pair.
851device		epair
852
853#  The `edsc' device implements a minimal Ethernet interface,
854#  which discards all packets sent and receives none.
855device		edsc
856
857#  The `tap' device is a pty-like virtual Ethernet interface
858device		tap
859
860#  The `tun' device implements (user-)ppp and nos-tun(8)
861device		tun
862
863#  The `gif' device implements IPv6 over IP4 tunneling,
864#  IPv4 over IPv6 tunneling, IPv4 over IPv4 tunneling and
865#  IPv6 over IPv6 tunneling.
866#  The `gre' device implements two types of IP4 over IP4 tunneling:
867#  GRE and MOBILE, as specified in the RFC1701 and RFC2004.
868#  The XBONEHACK option allows the same pair of addresses to be configured on
869#  multiple gif interfaces.
870device		gif
871device		gre
872options 	XBONEHACK
873
874#  The `faith' device captures packets sent to it and diverts them
875#  to the IPv4/IPv6 translation daemon.
876#  The `stf' device implements 6to4 encapsulation.
877device		faith
878device		stf
879
880#  The `ef' device provides support for multiple ethernet frame types
881#  specified via ETHER_* options. See ef(4) for details.
882device		ef
883options 	ETHER_II		# enable Ethernet_II frame
884options 	ETHER_8023		# enable Ethernet_802.3 (Novell) frame
885options 	ETHER_8022		# enable Ethernet_802.2 frame
886options 	ETHER_SNAP		# enable Ethernet_802.2/SNAP frame
887
888# The pf packet filter consists of three devices:
889#  The `pf' device provides /dev/pf and the firewall code itself.
890#  The `pflog' device provides the pflog0 interface which logs packets.
891#  The `pfsync' device provides the pfsync0 interface used for
892#   synchronization of firewall state tables (over the net).
893device		pf
894device		pflog
895device		pfsync
896
897# Bridge interface.
898device		if_bridge
899
900# Common Address Redundancy Protocol. See carp(4) for more details.
901device		carp
902
903# IPsec interface.
904device		enc
905
906# Link aggregation interface.
907device		lagg
908
909#
910# Internet family options:
911#
912# MROUTING enables the kernel multicast packet forwarder, which works
913# with mrouted and XORP.
914#
915# IPFIREWALL enables support for IP firewall construction, in
916# conjunction with the `ipfw' program.  IPFIREWALL_VERBOSE sends
917# logged packets to the system logger.  IPFIREWALL_VERBOSE_LIMIT
918# limits the number of times a matching entry can be logged.
919#
920# WARNING:  IPFIREWALL defaults to a policy of "deny ip from any to any"
921# and if you do not add other rules during startup to allow access,
922# YOU WILL LOCK YOURSELF OUT.  It is suggested that you set firewall_type=open
923# in /etc/rc.conf when first enabling this feature, then refining the
924# firewall rules in /etc/rc.firewall after you've tested that the new kernel
925# feature works properly.
926#
927# IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
928# allow everything.  Use with care, if a cracker can crash your
929# firewall machine, they can get to your protected machines.  However,
930# if you are using it as an as-needed filter for specific problems as
931# they arise, then this may be for you.  Changing the default to 'allow'
932# means that you won't get stuck if the kernel and /sbin/ipfw binary get
933# out of sync.
934#
935# IPDIVERT enables the divert IP sockets, used by ``ipfw divert''.  It
936# depends on IPFIREWALL if compiled into the kernel.
937#
938# IPFIREWALL_NAT adds support for in kernel nat in ipfw, and it requires
939# LIBALIAS.
940#
941# IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
942# packets without touching the TTL).  This can be useful to hide firewalls
943# from traceroute and similar tools.
944#
945# PF_DEFAULT_TO_DROP causes the default pf(4) rule to deny everything.
946#
947# TCPDEBUG enables code which keeps traces of the TCP state machine
948# for sockets with the SO_DEBUG option set, which can then be examined
949# using the trpt(8) utility.
950#
951# RADIX_MPATH provides support for equal-cost multi-path routing.
952#
953options 	MROUTING		# Multicast routing
954options 	IPFIREWALL		#firewall
955options 	IPFIREWALL_VERBOSE	#enable logging to syslogd(8)
956options 	IPFIREWALL_VERBOSE_LIMIT=100	#limit verbosity
957options 	IPFIREWALL_DEFAULT_TO_ACCEPT	#allow everything by default
958options 	IPFIREWALL_NAT		#ipfw kernel nat support
959options 	IPDIVERT		#divert sockets
960options 	IPFILTER		#ipfilter support
961options 	IPFILTER_LOG		#ipfilter logging
962options 	IPFILTER_LOOKUP		#ipfilter pools
963options 	IPFILTER_DEFAULT_BLOCK	#block all packets by default
964options 	IPSTEALTH		#support for stealth forwarding
965options 	PF_DEFAULT_TO_DROP	#drop everything by default
966options 	TCPDEBUG
967options 	RADIX_MPATH
968
969# The MBUF_STRESS_TEST option enables options which create
970# various random failures / extreme cases related to mbuf
971# functions.  See mbuf(9) for a list of available test cases.
972# MBUF_PROFILING enables code to profile the mbuf chains
973# exiting the system (via participating interfaces) and
974# return a logarithmic histogram of monitored parameters
975# (e.g. packet size, wasted space, number of mbufs in chain).
976options 	MBUF_STRESS_TEST
977options 	MBUF_PROFILING
978
979# Statically link in accept filters
980options 	ACCEPT_FILTER_DATA
981options 	ACCEPT_FILTER_DNS
982options 	ACCEPT_FILTER_HTTP
983
984# TCP_SIGNATURE adds support for RFC 2385 (TCP-MD5) digests. These are
985# carried in TCP option 19. This option is commonly used to protect
986# TCP sessions (e.g. BGP) where IPSEC is not available nor desirable.
987# This is enabled on a per-socket basis using the TCP_MD5SIG socket option.
988# This requires the use of 'device crypto', 'options IPSEC'
989# or 'device cryptodev'.
990options 	TCP_SIGNATURE		#include support for RFC 2385
991
992# DUMMYNET enables the "dummynet" bandwidth limiter.  You need IPFIREWALL
993# as well.  See dummynet(4) and ipfw(8) for more info.  When you run
994# DUMMYNET it is advisable to also have at least "options HZ=1000" to achieve
995# a smooth scheduling of the traffic.
996options 	DUMMYNET
997
998#####################################################################
999# FILESYSTEM OPTIONS
1000
1001#
1002# Only the root filesystem needs to be statically compiled or preloaded
1003# as module; everything else will be automatically loaded at mount
1004# time.  Some people still prefer to statically compile other
1005# filesystems as well.
1006#
1007# NB: The UNION filesystem was known to be buggy in the past.  It is now
1008# being actively maintained, although there are still some issues being
1009# resolved.
1010#
1011
1012# One of these is mandatory:
1013options 	FFS			#Fast filesystem
1014options 	NFSCLIENT		#Network File System client
1015
1016# The rest are optional:
1017options 	CD9660			#ISO 9660 filesystem
1018options 	FDESCFS			#File descriptor filesystem
1019options 	FUSE			#FUSE support module
1020options 	MSDOSFS			#MS DOS File System (FAT, FAT32)
1021options 	NFSSERVER		#Network File System server
1022options 	NFSLOCKD		#Network Lock Manager
1023options 	NFSCL			#New Network Filesystem Client
1024options 	NFSD			#New Network Filesystem Server
1025options 	KGSSAPI			#Kernel GSSAPI implementation
1026
1027options 	NULLFS			#NULL filesystem
1028options 	PROCFS			#Process filesystem (requires PSEUDOFS)
1029options 	PSEUDOFS		#Pseudo-filesystem framework
1030options 	PSEUDOFS_TRACE		#Debugging support for PSEUDOFS
1031options 	SMBFS			#SMB/CIFS filesystem
1032options 	TMPFS			#Efficient memory filesystem
1033options 	UDF			#Universal Disk Format
1034options 	UNIONFS			#Union filesystem
1035# The xFS_ROOT options REQUIRE the associated ``options xFS''
1036options 	NFS_ROOT		#NFS usable as root device
1037
1038# Soft updates is a technique for improving filesystem speed and
1039# making abrupt shutdown less risky.
1040#
1041options 	SOFTUPDATES
1042
1043# Extended attributes allow additional data to be associated with files,
1044# and is used for ACLs, Capabilities, and MAC labels.
1045# See src/sys/ufs/ufs/README.extattr for more information.
1046options 	UFS_EXTATTR
1047options 	UFS_EXTATTR_AUTOSTART
1048
1049# Access Control List support for UFS filesystems.  The current ACL
1050# implementation requires extended attribute support, UFS_EXTATTR,
1051# for the underlying filesystem.
1052# See src/sys/ufs/ufs/README.acls for more information.
1053options 	UFS_ACL
1054
1055# Directory hashing improves the speed of operations on very large
1056# directories at the expense of some memory.
1057options 	UFS_DIRHASH
1058
1059# Gjournal-based UFS journaling support.
1060options 	UFS_GJOURNAL
1061
1062# Make space in the kernel for a root filesystem on a md device.
1063# Define to the number of kilobytes to reserve for the filesystem.
1064options 	MD_ROOT_SIZE=10
1065
1066# Make the md device a potential root device, either with preloaded
1067# images of type mfs_root or md_root.
1068options 	MD_ROOT
1069
1070# Disk quotas are supported when this option is enabled.
1071options 	QUOTA			#enable disk quotas
1072
1073# If you are running a machine just as a fileserver for PC and MAC
1074# users, using SAMBA or Netatalk, you may consider setting this option
1075# and keeping all those users' directories on a filesystem that is
1076# mounted with the suiddir option. This gives new files the same
1077# ownership as the directory (similar to group). It's a security hole
1078# if you let these users run programs, so confine it to file-servers
1079# (but it'll save you lots of headaches in those cases). Root owned
1080# directories are exempt and X bits are cleared. The suid bit must be
1081# set on the directory as well; see chmod(1). PC owners can't see/set
1082# ownerships so they keep getting their toes trodden on. This saves
1083# you all the support calls as the filesystem it's used on will act as
1084# they expect: "It's my dir so it must be my file".
1085#
1086options 	SUIDDIR
1087
1088# NFS options:
1089options 	NFS_MINATTRTIMO=3	# VREG attrib cache timeout in sec
1090options 	NFS_MAXATTRTIMO=60
1091options 	NFS_MINDIRATTRTIMO=30	# VDIR attrib cache timeout in sec
1092options 	NFS_MAXDIRATTRTIMO=60
1093options 	NFS_GATHERDELAY=10	# Default write gather delay (msec)
1094options 	NFS_WDELAYHASHSIZ=16	# and with this
1095options 	NFS_DEBUG		# Enable NFS Debugging
1096
1097#
1098# Add support for the EXT2FS filesystem of Linux fame.  Be a bit
1099# careful with this - the ext2fs code has a tendency to lag behind
1100# changes and not be exercised very much, so mounting read/write could
1101# be dangerous (and even mounting read only could result in panics.)
1102#
1103options 	EXT2FS
1104
1105#
1106# Add support for the ReiserFS filesystem (used in Linux). Currently,
1107# this is limited to read-only access.
1108#
1109options 	REISERFS
1110
1111# Use real implementations of the aio_* system calls.  There are numerous
1112# stability and security issues in the current aio code that make it
1113# unsuitable for inclusion on machines with untrusted local users.
1114options 	VFS_AIO
1115
1116# Cryptographically secure random number generator; /dev/random
1117device		random
1118
1119# The system memory devices; /dev/mem, /dev/kmem
1120device		mem
1121
1122# The kernel symbol table device; /dev/ksyms
1123device		ksyms
1124
1125# Optional character code conversion support with LIBICONV.
1126# Each option requires their base file system and LIBICONV.
1127options 	CD9660_ICONV
1128options 	MSDOSFS_ICONV
1129options 	UDF_ICONV
1130
1131
1132#####################################################################
1133# POSIX P1003.1B
1134
1135# Real time extensions added in the 1993 POSIX
1136# _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
1137
1138options 	_KPOSIX_PRIORITY_SCHEDULING
1139# p1003_1b_semaphores are very experimental,
1140# user should be ready to assist in debugging if problems arise.
1141options 	P1003_1B_SEMAPHORES
1142
1143# POSIX message queue
1144options 	P1003_1B_MQUEUE
1145
1146#####################################################################
1147# SECURITY POLICY PARAMETERS
1148
1149# Support for BSM audit
1150options 	AUDIT
1151
1152# Support for Mandatory Access Control (MAC):
1153options 	MAC
1154options 	MAC_BIBA
1155options 	MAC_BSDEXTENDED
1156options 	MAC_IFOFF
1157options 	MAC_LOMAC
1158options 	MAC_MLS
1159options 	MAC_NONE
1160options 	MAC_PARTITION
1161options 	MAC_PORTACL
1162options 	MAC_SEEOTHERUIDS
1163options 	MAC_STUB
1164options 	MAC_TEST
1165
1166# Support for Capsicum
1167options 	CAPABILITIES	# fine-grained rights on file descriptors
1168options 	CAPABILITY_MODE	# sandboxes with no global namespace access
1169
1170
1171#####################################################################
1172# CLOCK OPTIONS
1173
1174# The granularity of operation is controlled by the kernel option HZ whose
1175# default value (1000 on most architectures) means a granularity of 1ms
1176# (1s/HZ).  Historically, the default was 100, but finer granularity is
1177# required for DUMMYNET and other systems on modern hardware.  There are
1178# reasonable arguments that HZ should, in fact, be 100 still; consider,
1179# that reducing the granularity too much might cause excessive overhead in
1180# clock interrupt processing, potentially causing ticks to be missed and thus
1181# actually reducing the accuracy of operation.
1182
1183options 	HZ=100
1184
1185# Enable support for the kernel PLL to use an external PPS signal,
1186# under supervision of [x]ntpd(8)
1187# More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
1188
1189options 	PPS_SYNC
1190
1191# Enable support for generic feed-forward clocks in the kernel.
1192# The feed-forward clock support is an alternative to the feedback oriented
1193# ntpd/system clock approach, and is to be used with a feed-forward
1194# synchronization algorithm such as the RADclock:
1195# More info here: http://www.synclab.org/radclock
1196
1197options 	FFCLOCK
1198
1199
1200#####################################################################
1201# SCSI DEVICES
1202
1203# SCSI DEVICE CONFIGURATION
1204
1205# The SCSI subsystem consists of the `base' SCSI code, a number of
1206# high-level SCSI device `type' drivers, and the low-level host-adapter
1207# device drivers.  The host adapters are listed in the ISA and PCI
1208# device configuration sections below.
1209#
1210# It is possible to wire down your SCSI devices so that a given bus,
1211# target, and LUN always come on line as the same device unit.  In
1212# earlier versions the unit numbers were assigned in the order that
1213# the devices were probed on the SCSI bus.  This means that if you
1214# removed a disk drive, you may have had to rewrite your /etc/fstab
1215# file, and also that you had to be careful when adding a new disk
1216# as it may have been probed earlier and moved your device configuration
1217# around.  (See also option GEOM_VOL for a different solution to this
1218# problem.)
1219
1220# This old behavior is maintained as the default behavior.  The unit
1221# assignment begins with the first non-wired down unit for a device
1222# type.  For example, if you wire a disk as "da3" then the first
1223# non-wired disk will be assigned da4.
1224
1225# The syntax for wiring down devices is:
1226
1227hint.scbus.0.at="ahc0"
1228hint.scbus.1.at="ahc1"
1229hint.scbus.1.bus="0"
1230hint.scbus.3.at="ahc2"
1231hint.scbus.3.bus="0"
1232hint.scbus.2.at="ahc2"
1233hint.scbus.2.bus="1"
1234hint.da.0.at="scbus0"
1235hint.da.0.target="0"
1236hint.da.0.unit="0"
1237hint.da.1.at="scbus3"
1238hint.da.1.target="1"
1239hint.da.2.at="scbus2"
1240hint.da.2.target="3"
1241hint.sa.1.at="scbus1"
1242hint.sa.1.target="6"
1243
1244# "units" (SCSI logical unit number) that are not specified are
1245# treated as if specified as LUN 0.
1246
1247# All SCSI devices allocate as many units as are required.
1248
1249# The ch driver drives SCSI Media Changer ("jukebox") devices.
1250#
1251# The da driver drives SCSI Direct Access ("disk") and Optical Media
1252# ("WORM") devices.
1253#
1254# The sa driver drives SCSI Sequential Access ("tape") devices.
1255#
1256# The cd driver drives SCSI Read Only Direct Access ("cd") devices.
1257#
1258# The ses driver drives SCSI Environment Services ("ses") and
1259# SAF-TE ("SCSI Accessible Fault-Tolerant Enclosure") devices.
1260#
1261# The pt driver drives SCSI Processor devices.
1262#
1263# The sg driver provides a passthrough API that is compatible with the
1264# Linux SG driver.  It will work in conjunction with the COMPAT_LINUX
1265# option to run linux SG apps.  It can also stand on its own and provide
1266# source level API compatibility for porting apps to FreeBSD.
1267#
1268# Target Mode support is provided here but also requires that a SIM
1269# (SCSI Host Adapter Driver) provide support as well.
1270#
1271# The targ driver provides target mode support as a Processor type device.
1272# It exists to give the minimal context necessary to respond to Inquiry
1273# commands. There is a sample user application that shows how the rest
1274# of the command support might be done in /usr/share/examples/scsi_target.
1275#
1276# The targbh driver provides target mode support and exists to respond
1277# to incoming commands that do not otherwise have a logical unit assigned
1278# to them.
1279#
1280# The pass driver provides a passthrough API to access the CAM subsystem.
1281
1282device		scbus		#base SCSI code
1283device		ch		#SCSI media changers
1284device		da		#SCSI direct access devices (aka disks)
1285device		sa		#SCSI tapes
1286device		cd		#SCSI CD-ROMs
1287device		ses		#Enclosure Services (SES and SAF-TE)
1288device		pt		#SCSI processor
1289device		targ		#SCSI Target Mode Code
1290device		targbh		#SCSI Target Mode Blackhole Device
1291device		pass		#CAM passthrough driver
1292device		sg		#Linux SCSI passthrough
1293device		ctl		#CAM Target Layer
1294
1295# CAM OPTIONS:
1296# debugging options:
1297# CAMDEBUG		Compile in all possible debugging.
1298# CAM_DEBUG_COMPILE	Debug levels to compile in.
1299# CAM_DEBUG_FLAGS	Debug levels to enable on boot.
1300# CAM_DEBUG_BUS		Limit debugging to the given bus.
1301# CAM_DEBUG_TARGET	Limit debugging to the given target.
1302# CAM_DEBUG_LUN		Limit debugging to the given lun.
1303# CAM_DEBUG_DELAY	Delay in us after printing each debug line.
1304#
1305# CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
1306# SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
1307# SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
1308# SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
1309#             queue after a bus reset, and the number of milliseconds to
1310#             freeze the device queue after a bus device reset.  This
1311#             can be changed at boot and runtime with the
1312#             kern.cam.scsi_delay tunable/sysctl.
1313options 	CAMDEBUG
1314options 	CAM_DEBUG_COMPILE=-1
1315options 	CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO|CAM_DEBUG_PROBE|CAM_DEBUG_PERIPH)
1316options 	CAM_DEBUG_BUS=-1
1317options 	CAM_DEBUG_TARGET=-1
1318options 	CAM_DEBUG_LUN=-1
1319options 	CAM_DEBUG_DELAY=1
1320options 	CAM_MAX_HIGHPOWER=4
1321options 	SCSI_NO_SENSE_STRINGS
1322options 	SCSI_NO_OP_STRINGS
1323options 	SCSI_DELAY=5000	# Be pessimistic about Joe SCSI device
1324
1325# Options for the CAM CDROM driver:
1326# CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
1327# CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
1328#                           enforced if there is I/O waiting for another LUN
1329# The compiled in defaults for these variables are 2 and 10 seconds,
1330# respectively.
1331#
1332# These can also be changed on the fly with the following sysctl variables:
1333# kern.cam.cd.changer.min_busy_seconds
1334# kern.cam.cd.changer.max_busy_seconds
1335#
1336options 	CHANGER_MIN_BUSY_SECONDS=2
1337options 	CHANGER_MAX_BUSY_SECONDS=10
1338
1339# Options for the CAM sequential access driver:
1340# SA_IO_TIMEOUT: Timeout for read/write/wfm  operations, in minutes
1341# SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
1342# SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
1343# SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
1344# SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
1345options 	SA_IO_TIMEOUT=4
1346options 	SA_SPACE_TIMEOUT=60
1347options 	SA_REWIND_TIMEOUT=(2*60)
1348options 	SA_ERASE_TIMEOUT=(4*60)
1349options 	SA_1FM_AT_EOD
1350
1351# Optional timeout for the CAM processor target (pt) device
1352# This is specified in seconds.  The default is 60 seconds.
1353options 	SCSI_PT_DEFAULT_TIMEOUT=60
1354
1355# Optional enable of doing SES passthrough on other devices (e.g., disks)
1356#
1357# Normally disabled because a lot of newer SCSI disks report themselves
1358# as having SES capabilities, but this can then clot up attempts to build
1359# a topology with the SES device that's on the box these drives are in....
1360options 	SES_ENABLE_PASSTHROUGH
1361
1362
1363#####################################################################
1364# MISCELLANEOUS DEVICES AND OPTIONS
1365
1366device		pty		#BSD-style compatibility pseudo ttys
1367device		nmdm		#back-to-back tty devices
1368device		md		#Memory/malloc disk
1369device		snp		#Snoop device - to look at pty/vty/etc..
1370device		ccd		#Concatenated disk driver
1371device		firmware	#firmware(9) support
1372
1373# Kernel side iconv library
1374options 	LIBICONV
1375
1376# Size of the kernel message buffer.  Should be N * pagesize.
1377options 	MSGBUF_SIZE=40960
1378
1379
1380#####################################################################
1381# HARDWARE DEVICE CONFIGURATION
1382
1383# For ISA the required hints are listed.
1384# EISA, MCA, PCI, CardBus, SD/MMC and pccard are self identifying buses, so
1385# no hints are needed.
1386
1387#
1388# Mandatory devices:
1389#
1390
1391# These options are valid for other keyboard drivers as well.
1392options 	KBD_DISABLE_KEYMAP_LOAD	# refuse to load a keymap
1393options 	KBD_INSTALL_CDEV	# install a CDEV entry in /dev
1394
1395options 	FB_DEBUG		# Frame buffer debugging
1396
1397device		splash			# Splash screen and screen saver support
1398
1399# Various screen savers.
1400device		blank_saver
1401device		daemon_saver
1402device		dragon_saver
1403device		fade_saver
1404device		fire_saver
1405device		green_saver
1406device		logo_saver
1407device		rain_saver
1408device		snake_saver
1409device		star_saver
1410device		warp_saver
1411
1412# The syscons console driver (SCO color console compatible).
1413device		sc
1414hint.sc.0.at="isa"
1415options 	MAXCONS=16		# number of virtual consoles
1416options 	SC_ALT_MOUSE_IMAGE	# simplified mouse cursor in text mode
1417options 	SC_DFLT_FONT		# compile font in
1418makeoptions	SC_DFLT_FONT=cp850
1419options 	SC_DISABLE_KDBKEY	# disable `debug' key
1420options 	SC_DISABLE_REBOOT	# disable reboot key sequence
1421options 	SC_HISTORY_SIZE=200	# number of history buffer lines
1422options 	SC_MOUSE_CHAR=0x3	# char code for text mode mouse cursor
1423options 	SC_PIXEL_MODE		# add support for the raster text mode
1424
1425# The following options will let you change the default colors of syscons.
1426options 	SC_NORM_ATTR=(FG_GREEN|BG_BLACK)
1427options 	SC_NORM_REV_ATTR=(FG_YELLOW|BG_GREEN)
1428options 	SC_KERNEL_CONS_ATTR=(FG_RED|BG_BLACK)
1429options 	SC_KERNEL_CONS_REV_ATTR=(FG_BLACK|BG_RED)
1430
1431# The following options will let you change the default behavior of
1432# cut-n-paste feature
1433options 	SC_CUT_SPACES2TABS	# convert leading spaces into tabs
1434options 	SC_CUT_SEPCHARS=\"x09\"	# set of characters that delimit words
1435					# (default is single space - \"x20\")
1436
1437# If you have a two button mouse, you may want to add the following option
1438# to use the right button of the mouse to paste text.
1439options 	SC_TWOBUTTON_MOUSE
1440
1441# You can selectively disable features in syscons.
1442options 	SC_NO_CUTPASTE
1443options 	SC_NO_FONT_LOADING
1444options 	SC_NO_HISTORY
1445options 	SC_NO_MODE_CHANGE
1446options 	SC_NO_SYSMOUSE
1447options 	SC_NO_SUSPEND_VTYSWITCH
1448
1449# `flags' for sc
1450#	0x80	Put the video card in the VESA 800x600 dots, 16 color mode
1451#	0x100	Probe for a keyboard device periodically if one is not present
1452
1453# Enable experimental features of the syscons terminal emulator (teken).
1454options 	TEKEN_CONS25		# cons25-style terminal emulation
1455options 	TEKEN_UTF8		# UTF-8 output handling
1456
1457#
1458# Optional devices:
1459#
1460
1461#
1462# SCSI host adapters:
1463#
1464# adv: All Narrow SCSI bus AdvanSys controllers.
1465# adw: Second Generation AdvanSys controllers including the ADV940UW.
1466# aha: Adaptec 154x/1535/1640
1467# ahb: Adaptec 174x EISA controllers
1468# ahc: Adaptec 274x/284x/2910/293x/294x/394x/3950x/3960x/398X/4944/
1469#      19160x/29160x, aic7770/aic78xx
1470# ahd: Adaptec 29320/39320 Controllers.
1471# aic: Adaptec 6260/6360, APA-1460 (PC Card), NEC PC9801-100 (C-BUS)
1472# bt:  Most Buslogic controllers: including BT-445, BT-54x, BT-64x, BT-74x,
1473#      BT-75x, BT-946, BT-948, BT-956, BT-958, SDC3211B, SDC3211F, SDC3222F
1474# esp: Emulex ESP, NCR 53C9x and QLogic FAS families based controllers
1475#      including the AMD Am53C974 (found on devices such as the Tekram
1476#      DC-390(T)) and the Sun ESP and FAS families of controllers
1477# isp: Qlogic ISP 1020, 1040 and 1040B PCI SCSI host adapters,
1478#      ISP 1240 Dual Ultra SCSI, ISP 1080 and 1280 (Dual) Ultra2,
1479#      ISP 12160 Ultra3 SCSI,
1480#      Qlogic ISP 2100 and ISP 2200 1Gb Fibre Channel host adapters.
1481#      Qlogic ISP 2300 and ISP 2312 2Gb Fibre Channel host adapters.
1482#      Qlogic ISP 2322 and ISP 6322 2Gb Fibre Channel host adapters.
1483# ispfw: Firmware module for Qlogic host adapters
1484# mpt: LSI-Logic MPT/Fusion 53c1020 or 53c1030 Ultra4
1485#      or FC9x9 Fibre Channel host adapters.
1486# ncr: NCR 53C810, 53C825 self-contained SCSI host adapters.
1487# sym: Symbios/Logic 53C8XX family of PCI-SCSI I/O processors:
1488#      53C810, 53C810A, 53C815, 53C825,  53C825A, 53C860, 53C875,
1489#      53C876, 53C885,  53C895, 53C895A, 53C896,  53C897, 53C1510D,
1490#      53C1010-33, 53C1010-66.
1491# trm: Tekram DC395U/UW/F DC315U adapters.
1492# wds: WD7000
1493
1494#
1495# Note that the order is important in order for Buslogic ISA/EISA cards to be
1496# probed correctly.
1497#
1498device		bt
1499hint.bt.0.at="isa"
1500hint.bt.0.port="0x330"
1501device		adv
1502hint.adv.0.at="isa"
1503device		adw
1504device		aha
1505hint.aha.0.at="isa"
1506device		aic
1507hint.aic.0.at="isa"
1508device		ahb
1509device		ahc
1510device		ahd
1511device		esp
1512device		iscsi_initiator
1513device		isp
1514hint.isp.0.disable="1"
1515hint.isp.0.role="3"
1516hint.isp.0.prefer_iomap="1"
1517hint.isp.0.prefer_memmap="1"
1518hint.isp.0.fwload_disable="1"
1519hint.isp.0.ignore_nvram="1"
1520hint.isp.0.fullduplex="1"
1521hint.isp.0.topology="lport"
1522hint.isp.0.topology="nport"
1523hint.isp.0.topology="lport-only"
1524hint.isp.0.topology="nport-only"
1525# we can't get u_int64_t types, nor can we get strings if it's got
1526# a leading 0x, hence this silly dodge.
1527hint.isp.0.portwnn="w50000000aaaa0000"
1528hint.isp.0.nodewnn="w50000000aaaa0001"
1529device		ispfw
1530device		mpt
1531device		ncr
1532device		sym
1533device		trm
1534device		wds
1535hint.wds.0.at="isa"
1536hint.wds.0.port="0x350"
1537hint.wds.0.irq="11"
1538hint.wds.0.drq="6"
1539
1540# The aic7xxx driver will attempt to use memory mapped I/O for all PCI
1541# controllers that have it configured only if this option is set. Unfortunately,
1542# this doesn't work on some motherboards, which prevents it from being the
1543# default.
1544options 	AHC_ALLOW_MEMIO
1545
1546# Dump the contents of the ahc controller configuration PROM.
1547options 	AHC_DUMP_EEPROM
1548
1549# Bitmap of units to enable targetmode operations.
1550options 	AHC_TMODE_ENABLE
1551
1552# Compile in Aic7xxx Debugging code.
1553options 	AHC_DEBUG
1554
1555# Aic7xxx driver debugging options. See sys/dev/aic7xxx/aic7xxx.h
1556options 	AHC_DEBUG_OPTS
1557
1558# Print register bitfields in debug output.  Adds ~128k to driver
1559# See ahc(4).
1560options 	AHC_REG_PRETTY_PRINT
1561
1562# Compile in aic79xx debugging code.
1563options 	AHD_DEBUG
1564
1565# Aic79xx driver debugging options.  Adds ~215k to driver.  See ahd(4).
1566options 	AHD_DEBUG_OPTS=0xFFFFFFFF
1567
1568# Print human-readable register definitions when debugging
1569options 	AHD_REG_PRETTY_PRINT
1570
1571# Bitmap of units to enable targetmode operations.
1572options 	AHD_TMODE_ENABLE
1573
1574# The adw driver will attempt to use memory mapped I/O for all PCI
1575# controllers that have it configured only if this option is set.
1576options 	ADW_ALLOW_MEMIO
1577
1578# Options used in dev/iscsi (Software iSCSI stack)
1579#
1580options 	ISCSI_INITIATOR_DEBUG=9
1581
1582# Options used in dev/isp/ (Qlogic SCSI/FC driver).
1583#
1584#	ISP_TARGET_MODE		-	enable target mode operation
1585#
1586options 	ISP_TARGET_MODE=1
1587#
1588#	ISP_DEFAULT_ROLES	-	default role
1589#		none=0
1590#		target=1
1591#		initiator=2
1592#		both=3			(not supported currently)
1593#
1594#	ISP_INTERNAL_TARGET		(trivial internal disk target, for testing)
1595#
1596options 	ISP_DEFAULT_ROLES=0
1597
1598# Options used in dev/sym/ (Symbios SCSI driver).
1599#options 	SYM_SETUP_LP_PROBE_MAP	#-Low Priority Probe Map (bits)
1600					# Allows the ncr to take precedence
1601					# 1 (1<<0) -> 810a, 860
1602					# 2 (1<<1) -> 825a, 875, 885, 895
1603					# 4 (1<<2) -> 895a, 896, 1510d
1604#options 	SYM_SETUP_SCSI_DIFF	#-HVD support for 825a, 875, 885
1605					# disabled:0 (default), enabled:1
1606#options 	SYM_SETUP_PCI_PARITY	#-PCI parity checking
1607					# disabled:0, enabled:1 (default)
1608#options 	SYM_SETUP_MAX_LUN	#-Number of LUNs supported
1609					# default:8, range:[1..64]
1610
1611# The 'dpt' driver provides support for old DPT controllers (http://www.dpt.com/).
1612# These have hardware RAID-{0,1,5} support, and do multi-initiator I/O.
1613# The DPT controllers are commonly re-licensed under other brand-names -
1614# some controllers by Olivetti, Dec, HP, AT&T, SNI, AST, Alphatronic, NEC and
1615# Compaq are actually DPT controllers.
1616#
1617# See src/sys/dev/dpt for debugging and other subtle options.
1618#  DPT_MEASURE_PERFORMANCE  Enables a set of (semi)invasive metrics. Various
1619#                           instruments are enabled.  The tools in
1620#                           /usr/sbin/dpt_* assume these to be enabled.
1621#  DPT_DEBUG_xxxx           These are controllable from sys/dev/dpt/dpt.h
1622#  DPT_RESET_HBA            Make "reset" actually reset the controller
1623#                           instead of fudging it.  Only enable this if you
1624#			    are 100% certain you need it.
1625
1626device		dpt
1627
1628# DPT options
1629#!CAM# options 	DPT_MEASURE_PERFORMANCE
1630options 	DPT_RESET_HBA
1631
1632#
1633# Compaq "CISS" RAID controllers (SmartRAID 5* series)
1634# These controllers have a SCSI-like interface, and require the
1635# CAM infrastructure.
1636#
1637device		ciss
1638
1639#
1640# Intel Integrated RAID controllers.
1641# This driver was developed and is maintained by Intel.  Contacts
1642# at Intel for this driver are
1643# "Kannanthanam, Boji T" <boji.t.kannanthanam@intel.com> and
1644# "Leubner, Achim" <achim.leubner@intel.com>.
1645#
1646device		iir
1647
1648#
1649# Mylex AcceleRAID and eXtremeRAID controllers with v6 and later
1650# firmware.  These controllers have a SCSI-like interface, and require
1651# the CAM infrastructure.
1652#
1653device		mly
1654
1655#
1656# Compaq Smart RAID, Mylex DAC960 and AMI MegaRAID controllers.  Only
1657# one entry is needed; the code will find and configure all supported
1658# controllers.
1659#
1660device		ida		# Compaq Smart RAID
1661device		mlx		# Mylex DAC960
1662device		amr		# AMI MegaRAID
1663device		amrp		# SCSI Passthrough interface (optional, CAM req.)
1664device		mfi		# LSI MegaRAID SAS
1665device		mfip		# LSI MegaRAID SAS passthrough, requires CAM
1666options 	MFI_DEBUG
1667
1668#
1669# 3ware ATA RAID
1670#
1671device		twe		# 3ware ATA RAID
1672
1673#
1674# Serial ATA host controllers:
1675#
1676# ahci: Advanced Host Controller Interface (AHCI) compatible
1677# mvs:  Marvell 88SX50XX/88SX60XX/88SX70XX/SoC controllers
1678# siis: SiliconImage SiI3124/SiI3132/SiI3531 controllers
1679#
1680# These drivers are part of cam(4) subsystem. They supersede less featured
1681# ata(4) subsystem drivers, supporting same hardware.
1682
1683device		ahci
1684device		mvs
1685device		siis
1686
1687#
1688# The 'ATA' driver supports all legacy ATA/ATAPI controllers, including
1689# PC Card devices. You only need one "device ata" for it to find all
1690# PCI and PC Card ATA/ATAPI devices on modern machines.
1691# Alternatively, individual bus and chipset drivers may be chosen by using
1692# the 'atacore' driver then selecting the drivers on a per vendor basis.
1693# For example to build a system which only supports a VIA chipset,
1694# omit 'ata' and include the 'atacore', 'atapci' and 'atavia' drivers.
1695device		ata
1696
1697# Modular ATA
1698#device		atacore		# Core ATA functionality
1699#device		atacard		# CARDBUS support
1700#device		atabus		# PC98 cbus support
1701#device		ataisa		# ISA bus support
1702#device		atapci		# PCI bus support; only generic chipset support
1703
1704# PCI ATA chipsets
1705#device		ataahci		# AHCI SATA
1706#device		ataacard	# ACARD
1707#device		ataacerlabs	# Acer Labs Inc. (ALI)
1708#device		ataadaptec	# Adaptec
1709#device		ataamd		# American Micro Devices (AMD)
1710#device		ataati		# ATI
1711#device		atacenatek	# Cenatek
1712#device		atacypress	# Cypress
1713#device		atacyrix	# Cyrix
1714#device		atahighpoint	# HighPoint
1715#device		ataintel	# Intel
1716#device		ataite		# Integrated Technology Inc. (ITE)
1717#device		atajmicron	# JMicron
1718#device		atamarvell	# Marvell
1719#device		atamicron	# Micron
1720#device		atanational	# National
1721#device		atanetcell	# NetCell
1722#device		atanvidia	# nVidia
1723#device		atapromise	# Promise
1724#device		ataserverworks	# ServerWorks
1725#device		atasiliconimage	# Silicon Image Inc. (SiI) (formerly CMD)
1726#device		atasis		# Silicon Integrated Systems Corp.(SiS)
1727#device		atavia		# VIA Technologies Inc.
1728
1729#
1730# For older non-PCI, non-PnPBIOS systems, these are the hints lines to add:
1731hint.ata.0.at="isa"
1732hint.ata.0.port="0x1f0"
1733hint.ata.0.irq="14"
1734hint.ata.1.at="isa"
1735hint.ata.1.port="0x170"
1736hint.ata.1.irq="15"
1737
1738#
1739# The following options are valid on the ATA driver:
1740#
1741# ATA_STATIC_ID:	controller numbering is static ie depends on location
1742#			else the device numbers are dynamically allocated.
1743# ATA_REQUEST_TIMEOUT:	the number of seconds to wait for an ATA request
1744#			before timing out.
1745
1746options 	ATA_STATIC_ID
1747#options 	ATA_REQUEST_TIMEOUT=10
1748
1749#
1750# Standard floppy disk controllers and floppy tapes, supports
1751# the Y-E DATA External FDD (PC Card)
1752#
1753device		fdc
1754hint.fdc.0.at="isa"
1755hint.fdc.0.port="0x3F0"
1756hint.fdc.0.irq="6"
1757hint.fdc.0.drq="2"
1758#
1759# FDC_DEBUG enables floppy debugging.  Since the debug output is huge, you
1760# gotta turn it actually on by setting the variable fd_debug with DDB,
1761# however.
1762options 	FDC_DEBUG
1763#
1764# Activate this line if you happen to have an Insight floppy tape.
1765# Probing them proved to be dangerous for people with floppy disks only,
1766# so it's "hidden" behind a flag:
1767#hint.fdc.0.flags="1"
1768
1769# Specify floppy devices
1770hint.fd.0.at="fdc0"
1771hint.fd.0.drive="0"
1772hint.fd.1.at="fdc0"
1773hint.fd.1.drive="1"
1774
1775#
1776# uart: newbusified driver for serial interfaces.  It consolidates the sio(4),
1777#	sab(4) and zs(4) drivers.
1778#
1779device		uart
1780
1781# Options for uart(4)
1782options 	UART_PPS_ON_CTS		# Do time pulse capturing using CTS
1783					# instead of DCD.
1784options 	UART_POLL_FREQ		# Set polling rate, used when hw has
1785					# no interrupt support (50 Hz default).
1786
1787# The following hint should only be used for pure ISA devices.  It is not
1788# needed otherwise.  Use of hints is strongly discouraged.
1789hint.uart.0.at="isa"
1790
1791# The following 3 hints are used when the UART is a system device (i.e., a
1792# console or debug port), but only on platforms that don't have any other
1793# means to pass the information to the kernel.  The unit number of the hint
1794# is only used to bundle the hints together.  There is no relation to the
1795# unit number of the probed UART.
1796hint.uart.0.port="0x3f8"
1797hint.uart.0.flags="0x10"
1798hint.uart.0.baud="115200"
1799
1800# `flags' for serial drivers that support consoles like sio(4) and uart(4):
1801#	0x10	enable console support for this unit.  Other console flags
1802#		(if applicable) are ignored unless this is set.  Enabling
1803#		console support does not make the unit the preferred console.
1804#		Boot with -h or set boot_serial=YES in the loader.  For sio(4)
1805#		specifically, the 0x20 flag can also be set (see above).
1806#		Currently, at most one unit can have console support; the
1807#		first one (in config file order) with this flag set is
1808#		preferred.  Setting this flag for sio0 gives the old behavior.
1809#	0x80	use this port for serial line gdb support in ddb.  Also known
1810#		as debug port.
1811#
1812
1813# Options for serial drivers that support consoles:
1814options 	BREAK_TO_DEBUGGER	# A BREAK on a serial console goes to
1815					# ddb, if available.
1816
1817# Solaris implements a new BREAK which is initiated by a character
1818# sequence CR ~ ^b which is similar to a familiar pattern used on
1819# Sun servers by the Remote Console.  There are FreeBSD extensions:
1820# CR ~ ^p requests force panic and CR ~ ^r requests a clean reboot.
1821options 	ALT_BREAK_TO_DEBUGGER
1822
1823# Serial Communications Controller
1824# Supports the Siemens SAB 82532 and Zilog Z8530 multi-channel
1825# communications controllers.
1826device		scc
1827
1828# PCI Universal Communications driver
1829# Supports various multi port PCI I/O cards.
1830device		puc
1831
1832#
1833# Network interfaces:
1834#
1835# MII bus support is required for many PCI Ethernet NICs,
1836# namely those which use MII-compliant transceivers or implement
1837# transceiver control interfaces that operate like an MII.  Adding
1838# "device miibus" to the kernel config pulls in support for the generic
1839# miibus API, the common support for for bit-bang'ing the MII and all
1840# of the PHY drivers, including a generic one for PHYs that aren't
1841# specifically handled by an individual driver.  Support for specific
1842# PHYs may be built by adding "device mii", "device mii_bitbang" if
1843# needed by the NIC driver and then adding the appropriate PHY driver.
1844device  	mii		# Minimal MII support
1845device  	mii_bitbang	# Common module for bit-bang'ing the MII
1846device  	miibus		# MII support w/ bit-bang'ing and all PHYs
1847
1848device  	acphy		# Altima Communications AC101
1849device  	amphy		# AMD AM79c873 / Davicom DM910{1,2}
1850device  	atphy		# Attansic/Atheros F1
1851device  	axphy		# Asix Semiconductor AX88x9x
1852device  	bmtphy		# Broadcom BCM5201/BCM5202 and 3Com 3c905C
1853device  	brgphy		# Broadcom BCM54xx/57xx 1000baseTX
1854device  	ciphy		# Cicada/Vitesse CS/VSC8xxx
1855device  	e1000phy	# Marvell 88E1000 1000/100/10-BT
1856device  	gentbi		# Generic 10-bit 1000BASE-{LX,SX} fiber ifaces
1857device  	icsphy		# ICS ICS1889-1893
1858device  	ip1000phy	# IC Plus IP1000A/IP1001
1859device  	jmphy		# JMicron JMP211/JMP202
1860device  	lxtphy		# Level One LXT-970
1861device  	mlphy		# Micro Linear 6692
1862device  	nsgphy		# NatSemi DP8361/DP83865/DP83891
1863device  	nsphy		# NatSemi DP83840A
1864device  	nsphyter	# NatSemi DP83843/DP83815
1865device  	pnaphy		# HomePNA
1866device  	qsphy		# Quality Semiconductor QS6612
1867device  	rdcphy		# RDC Semiconductor R6040
1868device  	rgephy		# RealTek 8169S/8110S/8211B/8211C
1869device  	rlphy		# RealTek 8139
1870device  	rlswitch	# RealTek 8305
1871device  	smcphy		# SMSC LAN91C111
1872device  	tdkphy		# TDK 89Q2120
1873device  	tlphy		# Texas Instruments ThunderLAN
1874device  	truephy		# LSI TruePHY
1875device		xmphy		# XaQti XMAC II
1876
1877# an:   Aironet 4500/4800 802.11 wireless adapters. Supports the PCMCIA,
1878#       PCI and ISA varieties.
1879# ae:   Support for gigabit ethernet adapters based on the Attansic/Atheros
1880#       L2 PCI-Express FastEthernet controllers.
1881# age:  Support for gigabit ethernet adapters based on the Attansic/Atheros
1882#       L1 PCI express gigabit ethernet controllers.
1883# alc:  Support for Atheros AR8131/AR8132 PCIe ethernet controllers.
1884# ale:  Support for Atheros AR8121/AR8113/AR8114 PCIe ethernet controllers.
1885# ath:  Atheros a/b/g WiFi adapters (requires ath_hal and wlan)
1886# bce:	Broadcom NetXtreme II (BCM5706/BCM5708) PCI/PCIe Gigabit Ethernet
1887#       adapters.
1888# bfe:	Broadcom BCM4401 Ethernet adapter.
1889# bge:	Support for gigabit ethernet adapters based on the Broadcom
1890#	BCM570x family of controllers, including the 3Com 3c996-T,
1891#	the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41, and
1892#	the embedded gigE NICs on Dell PowerEdge 2550 servers.
1893# bxe:	Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet
1894#       adapters.
1895# bwi:	Broadcom BCM430* and BCM431* family of wireless adapters.
1896# bwn:	Broadcom BCM43xx family of wireless adapters.
1897# cas:	Sun Cassini/Cassini+ and National Semiconductor DP83065 Saturn
1898# cm:	Arcnet SMC COM90c26 / SMC COM90c56
1899#	(and SMC COM90c66 in '56 compatibility mode) adapters.
1900# cxgbe: Support for PCI express 10Gb/1Gb adapters based on the Chelsio T4
1901#       (Terminator 4) ASIC.
1902# dc:   Support for PCI fast ethernet adapters based on the DEC/Intel 21143
1903#       and various workalikes including:
1904#       the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
1905#       AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
1906#       82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
1907#       and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
1908#       replaces the old al, ax, dm, pn and mx drivers.  List of brands:
1909#       Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110,
1910#       SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX,
1911#       LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
1912#       KNE110TX.
1913# de:   Digital Equipment DC21040
1914# em:   Intel Pro/1000 Gigabit Ethernet 82542, 82543, 82544 based adapters.
1915# igb:  Intel Pro/1000 PCI Express Gigabit Ethernet: 82575 and later adapters.
1916# ep:   3Com 3C509, 3C529, 3C556, 3C562D, 3C563D, 3C572, 3C574X, 3C579, 3C589
1917#       and PC Card devices using these chipsets.
1918# ex:   Intel EtherExpress Pro/10 and other i82595-based adapters,
1919#       Olicom Ethernet PC Card devices.
1920# fe:   Fujitsu MB86960A/MB86965A Ethernet
1921# fea:  DEC DEFEA EISA FDDI adapter
1922# fpa:  Support for the Digital DEFPA PCI FDDI. `device fddi' is also needed.
1923# fxp:  Intel EtherExpress Pro/100B
1924#	(hint of prefer_iomap can be done to prefer I/O instead of Mem mapping)
1925# gem:  Apple GMAC/Sun ERI/Sun GEM
1926# hme:  Sun HME (Happy Meal Ethernet)
1927# jme:  JMicron JMC260 Fast Ethernet/JMC250 Gigabit Ethernet based adapters.
1928# le:   AMD Am7900 LANCE and Am79C9xx PCnet
1929# lge:	Support for PCI gigabit ethernet adapters based on the Level 1
1930#	LXT1001 NetCellerator chipset. This includes the D-Link DGE-500SX,
1931#	SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
1932# malo: Marvell Libertas wireless NICs.
1933# mwl:  Marvell 88W8363 802.11n wireless NICs.
1934#	Requires the mwl firmware module
1935# mwlfw: Marvell 88W8363 firmware
1936# msk:	Support for gigabit ethernet adapters based on the Marvell/SysKonnect
1937#	Yukon II Gigabit controllers, including 88E8021, 88E8022, 88E8061,
1938#	88E8062, 88E8035, 88E8036, 88E8038, 88E8050, 88E8052, 88E8053,
1939#	88E8055, 88E8056 and D-Link 560T/550SX.
1940# lmc:	Support for the LMC/SBE wide-area network interface cards.
1941# my:	Myson Fast Ethernet (MTD80X, MTD89X)
1942# nge:	Support for PCI gigabit ethernet adapters based on the National
1943#	Semiconductor DP83820 and DP83821 chipset. This includes the
1944#	SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante FriendlyNet
1945#	GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the Surecom
1946#	EP-320G-TX and the Netgear GA622T.
1947# oce:	Emulex 10 Gbit adapters (OneConnect Ethernet)
1948# pcn:	Support for PCI fast ethernet adapters based on the AMD Am79c97x
1949#	PCnet-FAST, PCnet-FAST+, PCnet-FAST III, PCnet-PRO and PCnet-Home
1950#	chipsets. These can also be handled by the le(4) driver if the
1951#	pcn(4) driver is left out of the kernel. The le(4) driver does not
1952#	support the additional features like the MII bus and burst mode of
1953#	the PCnet-FAST and greater chipsets though.
1954# ral:	Ralink Technology IEEE 802.11 wireless adapter
1955# re:   RealTek 8139C+/8169/816xS/811xS/8101E PCI/PCIe Ethernet adapter
1956# rl:   Support for PCI fast ethernet adapters based on the RealTek 8129/8139
1957#       chipset.  Note that the RealTek driver defaults to using programmed
1958#       I/O to do register accesses because memory mapped mode seems to cause
1959#       severe lockups on SMP hardware.  This driver also supports the
1960#       Accton EN1207D `Cheetah' adapter, which uses a chip called
1961#       the MPX 5030/5038, which is either a RealTek in disguise or a
1962#       RealTek workalike.  Note that the D-Link DFE-530TX+ uses the RealTek
1963#       chipset and is supported by this driver, not the 'vr' driver.
1964# sf:   Support for Adaptec Duralink PCI fast ethernet adapters based on the
1965#       Adaptec AIC-6915 "starfire" controller.
1966#       This includes dual and quad port cards, as well as one 100baseFX card.
1967#       Most of these are 64-bit PCI devices, except for one single port
1968#       card which is 32-bit.
1969# sge:  Silicon Integrated Systems SiS190/191 Fast/Gigabit Ethernet adapter
1970# sis:  Support for NICs based on the Silicon Integrated Systems SiS 900,
1971#       SiS 7016 and NS DP83815 PCI fast ethernet controller chips.
1972# sk:   Support for the SysKonnect SK-984x series PCI gigabit ethernet NICs.
1973#       This includes the SK-9841 and SK-9842 single port cards (single mode
1974#       and multimode fiber) and the SK-9843 and SK-9844 dual port cards
1975#       (also single mode and multimode).
1976#       The driver will autodetect the number of ports on the card and
1977#       attach each one as a separate network interface.
1978# sn:   Support for ISA and PC Card Ethernet devices using the
1979#       SMC91C90/92/94/95 chips.
1980# ste:  Sundance Technologies ST201 PCI fast ethernet controller, includes
1981#       the D-Link DFE-550TX.
1982# stge: Support for gigabit ethernet adapters based on the Sundance/Tamarack
1983#       TC9021 family of controllers, including the Sundance ST2021/ST2023,
1984#       the Sundance/Tamarack TC9021, the D-Link DL-4000 and ASUS NX1101.
1985# ti:   Support for PCI gigabit ethernet NICs based on the Alteon Networks
1986#       Tigon 1 and Tigon 2 chipsets.  This includes the Alteon AceNIC, the
1987#       3Com 3c985, the Netgear GA620 and various others.  Note that you will
1988#       probably want to bump up kern.ipc.nmbclusters a lot to use this driver.
1989# tl:   Support for the Texas Instruments TNETE100 series 'ThunderLAN'
1990#       cards and integrated ethernet controllers.  This includes several
1991#       Compaq Netelligent 10/100 cards and the built-in ethernet controllers
1992#       in several Compaq Prosignia, Proliant and Deskpro systems.  It also
1993#       supports several Olicom 10Mbps and 10/100 boards.
1994# tx:   SMC 9432 TX, BTX and FTX cards. (SMC EtherPower II series)
1995# txp:	Support for 3Com 3cR990 cards with the "Typhoon" chipset
1996# vr:   Support for various fast ethernet adapters based on the VIA
1997#       Technologies VT3043 `Rhine I' and VT86C100A `Rhine II' chips,
1998#       including the D-Link DFE520TX and D-Link DFE530TX (see 'rl' for
1999#       DFE530TX+), the Hawking Technologies PN102TX, and the AOpen/Acer ALN-320.
2000# vte:  DM&P Vortex86 RDC R6040 Fast Ethernet
2001# vx:   3Com 3C590 and 3C595
2002# wb:   Support for fast ethernet adapters based on the Winbond W89C840F chip.
2003#       Note: this is not the same as the Winbond W89C940F, which is a
2004#       NE2000 clone.
2005# wi:   Lucent WaveLAN/IEEE 802.11 PCMCIA adapters. Note: this supports both
2006#       the PCMCIA and ISA cards: the ISA card is really a PCMCIA to ISA
2007#       bridge with a PCMCIA adapter plugged into it.
2008# xe:   Xircom/Intel EtherExpress Pro100/16 PC Card ethernet controller,
2009#       Accton Fast EtherCard-16, Compaq Netelligent 10/100 PC Card,
2010#       Toshiba 10/100 Ethernet PC Card, Xircom 16-bit Ethernet + Modem 56
2011# xl:   Support for the 3Com 3c900, 3c905, 3c905B and 3c905C (Fast)
2012#       Etherlink XL cards and integrated controllers.  This includes the
2013#       integrated 3c905B-TX chips in certain Dell Optiplex and Dell
2014#       Precision desktop machines and the integrated 3c905-TX chips
2015#       in Dell Latitude laptop docking stations.
2016#       Also supported: 3Com 3c980(C)-TX, 3Com 3cSOHO100-TX, 3Com 3c450-TX
2017
2018# Order for ISA/EISA devices is important here
2019
2020device		cm
2021hint.cm.0.at="isa"
2022hint.cm.0.port="0x2e0"
2023hint.cm.0.irq="9"
2024hint.cm.0.maddr="0xdc000"
2025device		ep
2026device		ex
2027device		fe
2028hint.fe.0.at="isa"
2029hint.fe.0.port="0x300"
2030device		fea
2031device		sn
2032hint.sn.0.at="isa"
2033hint.sn.0.port="0x300"
2034hint.sn.0.irq="10"
2035device		an
2036device		wi
2037device		xe
2038
2039# PCI Ethernet NICs that use the common MII bus controller code.
2040device		ae		# Attansic/Atheros L2 FastEthernet
2041device		age		# Attansic/Atheros L1 Gigabit Ethernet
2042device		alc		# Atheros AR8131/AR8132 Ethernet
2043device		ale		# Atheros AR8121/AR8113/AR8114 Ethernet
2044device		bce		# Broadcom BCM5706/BCM5708 Gigabit Ethernet
2045device		bfe		# Broadcom BCM440x 10/100 Ethernet
2046device		bge		# Broadcom BCM570xx Gigabit Ethernet
2047device		cas		# Sun Cassini/Cassini+ and NS DP83065 Saturn
2048device		cxgb		# Chelsio T3 10 Gigabit Ethernet
2049device		cxgb_t3fw	# Chelsio T3 10 Gigabit Ethernet firmware
2050device		dc		# DEC/Intel 21143 and various workalikes
2051device		et		# Agere ET1310 10/100/Gigabit Ethernet
2052device		fxp		# Intel EtherExpress PRO/100B (82557, 82558)
2053hint.fxp.0.prefer_iomap="0"
2054device		gem		# Apple GMAC/Sun ERI/Sun GEM
2055device		hme		# Sun HME (Happy Meal Ethernet)
2056device		jme		# JMicron JMC250 Gigabit/JMC260 Fast Ethernet
2057device		lge		# Level 1 LXT1001 gigabit Ethernet
2058device		msk		# Marvell/SysKonnect Yukon II Gigabit Ethernet
2059device		my		# Myson Fast Ethernet (MTD80X, MTD89X)
2060device		nge		# NatSemi DP83820 gigabit Ethernet
2061device		re		# RealTek 8139C+/8169/8169S/8110S
2062device		rl		# RealTek 8129/8139
2063device		pcn		# AMD Am79C97x PCI 10/100 NICs
2064device		sf		# Adaptec AIC-6915 (``Starfire'')
2065device		sge		# Silicon Integrated Systems SiS190/191
2066device		sis		# Silicon Integrated Systems SiS 900/SiS 7016
2067device		sk		# SysKonnect SK-984x & SK-982x gigabit Ethernet
2068device		ste		# Sundance ST201 (D-Link DFE-550TX)
2069device		stge		# Sundance/Tamarack TC9021 gigabit Ethernet
2070device		tl		# Texas Instruments ThunderLAN
2071device		tx		# SMC EtherPower II (83c170 ``EPIC'')
2072device		vr		# VIA Rhine, Rhine II
2073device		vte		# DM&P Vortex86 RDC R6040 Fast Ethernet
2074device		wb		# Winbond W89C840F
2075device		xl		# 3Com 3c90x (``Boomerang'', ``Cyclone'')
2076
2077# PCI Ethernet NICs.
2078device		cxgbe		# Chelsio T4 10GbE PCIe adapter
2079device		de		# DEC/Intel DC21x4x (``Tulip'')
2080device		em		# Intel Pro/1000 Gigabit Ethernet
2081device		igb		# Intel Pro/1000 PCIE Gigabit Ethernet
2082device		ixgb		# Intel Pro/10Gbe PCI-X Ethernet
2083device		ixgbe		# Intel Pro/10Gbe PCIE Ethernet
2084device		le		# AMD Am7900 LANCE and Am79C9xx PCnet
2085device		mxge		# Myricom Myri-10G 10GbE NIC
2086device		nxge		# Neterion Xframe 10GbE Server/Storage Adapter
2087device		oce		# Emulex 10 GbE (OneConnect Ethernet)
2088device		ti		# Alteon Networks Tigon I/II gigabit Ethernet
2089device		txp		# 3Com 3cR990 (``Typhoon'')
2090device		vx		# 3Com 3c590, 3c595 (``Vortex'')
2091device		vxge		# Exar/Neterion XFrame 3100 10GbE
2092
2093# PCI FDDI NICs.
2094device		fpa
2095
2096# PCI WAN adapters.
2097device		lmc
2098
2099# PCI IEEE 802.11 Wireless NICs
2100device		ath		# Atheros pci/cardbus NIC's
2101device		ath_hal		# pci/cardbus chip support
2102#device		ath_ar5210	# AR5210 chips
2103#device		ath_ar5211	# AR5211 chips
2104#device		ath_ar5212	# AR5212 chips
2105#device		ath_rf2413
2106#device		ath_rf2417
2107#device		ath_rf2425
2108#device		ath_rf5111
2109#device		ath_rf5112
2110#device		ath_rf5413
2111#device		ath_ar5416	# AR5416 chips
2112options 	AH_SUPPORT_AR5416	# enable AR5416 tx/rx descriptors
2113# All of the AR5212 parts have a problem when paired with the AR71xx
2114# CPUS.  These parts have a bug that triggers a fatal bus error on the AR71xx
2115# only.  Details of the exact nature of the bug are sketchy, but some can be
2116# found at https://forum.openwrt.org/viewtopic.php?pid=70060 on pages 4, 5 and
2117# 6.  This option enables this workaround.  There is a performance penalty
2118# for this work around, but without it things don't work at all.  The DMA
2119# from the card usually bursts 128 bytes, but on the affected CPUs, only
2120# 4 are safe.
2121options	   	AH_RXCFG_SDMAMW_4BYTES
2122#device		ath_ar9160	# AR9160 chips
2123#device		ath_ar9280	# AR9280 chips
2124#device		ath_ar9285	# AR9285 chips
2125device		ath_rate_sample	# SampleRate tx rate control for ath
2126device		bwi		# Broadcom BCM430* BCM431*
2127device		bwn		# Broadcom BCM43xx
2128device		malo		# Marvell Libertas wireless NICs.
2129device		mwl		# Marvell 88W8363 802.11n wireless NICs.
2130device		mwlfw
2131device		ral		# Ralink Technology RT2500 wireless NICs.
2132
2133# Use sf_buf(9) interface for jumbo buffers on ti(4) controllers.
2134#options 	TI_SF_BUF_JUMBO
2135# Turn on the header splitting option for the ti(4) driver firmware.  This
2136# only works for Tigon II chips, and has no effect for Tigon I chips.
2137# This option requires the TI_SF_BUF_JUMBO option above.
2138#options 	TI_JUMBO_HDRSPLIT
2139
2140# These two options allow manipulating the mbuf cluster size and mbuf size,
2141# respectively.  Be very careful with NIC driver modules when changing
2142# these from their default values, because that can potentially cause a
2143# mismatch between the mbuf size assumed by the kernel and the mbuf size
2144# assumed by a module.  The only driver that currently has the ability to
2145# detect a mismatch is ti(4).
2146options 	MCLSHIFT=12	# mbuf cluster shift in bits, 12 == 4KB
2147options 	MSIZE=512	# mbuf size in bytes
2148
2149#
2150# ATM related options (Cranor version)
2151# (note: this driver cannot be used with the HARP ATM stack)
2152#
2153# The `en' device provides support for Efficient Networks (ENI)
2154# ENI-155 PCI midway cards, and the Adaptec 155Mbps PCI ATM cards (ANA-59x0).
2155#
2156# The `hatm' device provides support for Fore/Marconi HE155 and HE622
2157# ATM PCI cards.
2158#
2159# The `fatm' device provides support for Fore PCA200E ATM PCI cards.
2160#
2161# The `patm' device provides support for IDT77252 based cards like
2162# ProSum's ProATM-155 and ProATM-25 and IDT's evaluation boards.
2163#
2164# atm device provides generic atm functions and is required for
2165# atm devices.
2166# NATM enables the netnatm protocol family that can be used to
2167# bypass TCP/IP.
2168#
2169# utopia provides the access to the ATM PHY chips and is required for en,
2170# hatm and fatm.
2171#
2172# the current driver supports only PVC operations (no atm-arp, no multicast).
2173# for more details, please read the original documents at
2174# http://www.ccrc.wustl.edu/pub/chuck/tech/bsdatm/bsdatm.html
2175#
2176device		atm
2177device		en
2178device		fatm			#Fore PCA200E
2179device		hatm			#Fore/Marconi HE155/622
2180device		patm			#IDT77252 cards (ProATM and IDT)
2181device		utopia			#ATM PHY driver
2182options 	NATM			#native ATM
2183
2184options 	LIBMBPOOL		#needed by patm, iatm
2185
2186#
2187# Sound drivers
2188#
2189# sound: The generic sound driver.
2190#
2191
2192device		sound
2193
2194#
2195# snd_*: Device-specific drivers.
2196#
2197# The flags of the device tell the device a bit more info about the
2198# device that normally is obtained through the PnP interface.
2199#	bit  2..0   secondary DMA channel;
2200#	bit  4      set if the board uses two dma channels;
2201#	bit 15..8   board type, overrides autodetection; leave it
2202#		    zero if don't know what to put in (and you don't,
2203#		    since this is unsupported at the moment...).
2204#
2205# snd_ad1816:		Analog Devices AD1816 ISA PnP/non-PnP.
2206# snd_als4000:		Avance Logic ALS4000 PCI.
2207# snd_atiixp:		ATI IXP 200/300/400 PCI.
2208# snd_audiocs:		Crystal Semiconductor CS4231 SBus/EBus. Only
2209#			for sparc64.
2210# snd_cmi:		CMedia CMI8338/CMI8738 PCI.
2211# snd_cs4281:		Crystal Semiconductor CS4281 PCI.
2212# snd_csa:		Crystal Semiconductor CS461x/428x PCI. (except
2213#			4281)
2214# snd_ds1:		Yamaha DS-1 PCI.
2215# snd_emu10k1:		Creative EMU10K1 PCI and EMU10K2 (Audigy) PCI.
2216# snd_emu10kx:		Creative SoundBlaster Live! and Audigy
2217# snd_envy24:		VIA Envy24 and compatible, needs snd_spicds.
2218# snd_envy24ht:		VIA Envy24HT and compatible, needs snd_spicds.
2219# snd_es137x:		Ensoniq AudioPCI ES137x PCI.
2220# snd_ess:		Ensoniq ESS ISA PnP/non-PnP, to be used in
2221#			conjunction with snd_sbc.
2222# snd_fm801:		Forte Media FM801 PCI.
2223# snd_gusc:		Gravis UltraSound ISA PnP/non-PnP.
2224# snd_hda:		Intel High Definition Audio (Controller) and
2225#			compatible.
2226# snd_hdspe:		RME HDSPe AIO and RayDAT.
2227# snd_ich:		Intel ICH AC'97 and some more audio controllers
2228#			embedded in a chipset, for example nVidia
2229#			nForce controllers.
2230# snd_maestro:		ESS Technology Maestro-1/2x PCI.
2231# snd_maestro3:		ESS Technology Maestro-3/Allegro PCI.
2232# snd_mss:		Microsoft Sound System ISA PnP/non-PnP.
2233# snd_neomagic:		Neomagic 256 AV/ZX PCI.
2234# snd_sb16:		Creative SoundBlaster16, to be used in
2235#			conjunction with snd_sbc.
2236# snd_sb8:		Creative SoundBlaster (pre-16), to be used in
2237#			conjunction with snd_sbc.
2238# snd_sbc:		Creative SoundBlaster ISA PnP/non-PnP.
2239#			Supports ESS and Avance ISA chips as well.
2240# snd_solo:		ESS Solo-1x PCI.
2241# snd_spicds:		SPI codec driver, needed by Envy24/Envy24HT drivers.
2242# snd_t4dwave:		Trident 4DWave DX/NX PCI, Sis 7018 PCI and Acer Labs
2243#			M5451 PCI.
2244# snd_uaudio:		USB audio.
2245# snd_via8233:		VIA VT8233x PCI.
2246# snd_via82c686:	VIA VT82C686A PCI.
2247# snd_vibes:		S3 Sonicvibes PCI.
2248
2249device		snd_ad1816
2250device		snd_als4000
2251device		snd_atiixp
2252#device		snd_audiocs
2253device		snd_cmi
2254device		snd_cs4281
2255device		snd_csa
2256device		snd_ds1
2257device		snd_emu10k1
2258device		snd_emu10kx
2259device		snd_envy24
2260device		snd_envy24ht
2261device		snd_es137x
2262device		snd_ess
2263device		snd_fm801
2264device		snd_gusc
2265device		snd_hda
2266device		snd_hdspe
2267device		snd_ich
2268device		snd_maestro
2269device		snd_maestro3
2270device		snd_mss
2271device		snd_neomagic
2272device		snd_sb16
2273device		snd_sb8
2274device		snd_sbc
2275device		snd_solo
2276device		snd_spicds
2277device		snd_t4dwave
2278device		snd_uaudio
2279device		snd_via8233
2280device		snd_via82c686
2281device		snd_vibes
2282
2283# For non-PnP sound cards:
2284hint.pcm.0.at="isa"
2285hint.pcm.0.irq="10"
2286hint.pcm.0.drq="1"
2287hint.pcm.0.flags="0x0"
2288hint.sbc.0.at="isa"
2289hint.sbc.0.port="0x220"
2290hint.sbc.0.irq="5"
2291hint.sbc.0.drq="1"
2292hint.sbc.0.flags="0x15"
2293hint.gusc.0.at="isa"
2294hint.gusc.0.port="0x220"
2295hint.gusc.0.irq="5"
2296hint.gusc.0.drq="1"
2297hint.gusc.0.flags="0x13"
2298
2299#
2300# Following options are intended for debugging/testing purposes:
2301#
2302# SND_DEBUG                    Enable extra debugging code that includes
2303#                              sanity checking and possible increase of
2304#                              verbosity.
2305#
2306# SND_DIAGNOSTIC               Similar in a spirit of INVARIANTS/DIAGNOSTIC,
2307#                              zero tolerance against inconsistencies.
2308#
2309# SND_FEEDER_MULTIFORMAT       By default, only 16/32 bit feeders are compiled
2310#                              in. This options enable most feeder converters
2311#                              except for 8bit. WARNING: May bloat the kernel.
2312#
2313# SND_FEEDER_FULL_MULTIFORMAT  Ditto, but includes 8bit feeders as well.
2314#
2315# SND_FEEDER_RATE_HP           (feeder_rate) High precision 64bit arithmetic
2316#                              as much as possible (the default trying to
2317#                              avoid it). Possible slowdown.
2318#
2319# SND_PCM_64                   (Only applicable for i386/32bit arch)
2320#                              Process 32bit samples through 64bit
2321#                              integer/arithmetic. Slight increase of dynamic
2322#                              range at a cost of possible slowdown.
2323#
2324# SND_OLDSTEREO                Only 2 channels are allowed, effectively
2325#                              disabling multichannel processing.
2326#
2327options		SND_DEBUG
2328options		SND_DIAGNOSTIC
2329options		SND_FEEDER_MULTIFORMAT
2330options		SND_FEEDER_FULL_MULTIFORMAT
2331options		SND_FEEDER_RATE_HP
2332options		SND_PCM_64
2333options		SND_OLDSTEREO
2334
2335#
2336# IEEE-488 hardware:
2337# pcii:		PCIIA cards (uPD7210 based isa cards)
2338# tnt4882:	National Instruments PCI-GPIB card.
2339
2340device	pcii
2341hint.pcii.0.at="isa"
2342hint.pcii.0.port="0x2e1"
2343hint.pcii.0.irq="5"
2344hint.pcii.0.drq="1"
2345
2346device	tnt4882
2347
2348#
2349# Miscellaneous hardware:
2350#
2351# scd: Sony CD-ROM using proprietary (non-ATAPI) interface
2352# mcd: Mitsumi CD-ROM using proprietary (non-ATAPI) interface
2353# bktr: Brooktree bt848/848a/849a/878/879 video capture and TV Tuner board
2354# joy: joystick (including IO DATA PCJOY PC Card joystick)
2355# cmx: OmniKey CardMan 4040 pccard smartcard reader
2356
2357# Mitsumi CD-ROM
2358device		mcd
2359hint.mcd.0.at="isa"
2360hint.mcd.0.port="0x300"
2361# for the Sony CDU31/33A CDROM
2362device		scd
2363hint.scd.0.at="isa"
2364hint.scd.0.port="0x230"
2365device		joy			# PnP aware, hints for non-PnP only
2366hint.joy.0.at="isa"
2367hint.joy.0.port="0x201"
2368device		cmx
2369
2370#
2371# The 'bktr' device is a PCI video capture device using the Brooktree
2372# bt848/bt848a/bt849a/bt878/bt879 chipset. When used with a TV Tuner it forms a
2373# TV card, e.g. Miro PC/TV, Hauppauge WinCast/TV WinTV, VideoLogic Captivator,
2374# Intel Smart Video III, AverMedia, IMS Turbo, FlyVideo.
2375#
2376# options 	OVERRIDE_CARD=xxx
2377# options 	OVERRIDE_TUNER=xxx
2378# options 	OVERRIDE_MSP=1
2379# options 	OVERRIDE_DBX=1
2380# These options can be used to override the auto detection
2381# The current values for xxx are found in src/sys/dev/bktr/bktr_card.h
2382# Using sysctl(8) run-time overrides on a per-card basis can be made
2383#
2384# options 	BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
2385# or
2386# options 	BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
2387# Specifies the default video capture mode.
2388# This is required for Dual Crystal (28&35MHz) boards where PAL is used
2389# to prevent hangs during initialization, e.g. VideoLogic Captivator PCI.
2390#
2391# options 	BKTR_USE_PLL
2392# This is required for PAL or SECAM boards with a 28MHz crystal and no 35MHz
2393# crystal, e.g. some new Bt878 cards.
2394#
2395# options 	BKTR_GPIO_ACCESS
2396# This enables IOCTLs which give user level access to the GPIO port.
2397#
2398# options 	BKTR_NO_MSP_RESET
2399# Prevents the MSP34xx reset. Good if you initialize the MSP in another OS first
2400#
2401# options 	BKTR_430_FX_MODE
2402# Switch Bt878/879 cards into Intel 430FX chipset compatibility mode.
2403#
2404# options 	BKTR_SIS_VIA_MODE
2405# Switch Bt878/879 cards into SIS/VIA chipset compatibility mode which is
2406# needed for some old SiS and VIA chipset motherboards.
2407# This also allows Bt878/879 chips to work on old OPTi (<1997) chipset
2408# motherboards and motherboards with bad or incomplete PCI 2.1 support.
2409# As a rough guess, old = before 1998
2410#
2411# options 	BKTR_NEW_MSP34XX_DRIVER
2412# Use new, more complete initialization scheme for the msp34* soundchip.
2413# Should fix stereo autodetection if the old driver does only output
2414# mono sound.
2415
2416#
2417# options 	BKTR_USE_FREEBSD_SMBUS
2418# Compile with FreeBSD SMBus implementation
2419#
2420# Brooktree driver has been ported to the new I2C framework. Thus,
2421# you'll need to have the following 3 lines in the kernel config.
2422#     device smbus
2423#     device iicbus
2424#     device iicbb
2425#     device iicsmb
2426# The iic and smb devices are only needed if you want to control other
2427# I2C slaves connected to the external connector of some cards.
2428#
2429device		bktr
2430
2431#
2432# PC Card/PCMCIA and Cardbus
2433#
2434# cbb: pci/cardbus bridge implementing YENTA interface
2435# pccard: pccard slots
2436# cardbus: cardbus slots
2437device		cbb
2438device		pccard
2439device		cardbus
2440
2441#
2442# MMC/SD
2443#
2444# mmc 		MMC/SD bus
2445# mmcsd		MMC/SD memory card
2446# sdhci		Generic PCI SD Host Controller
2447#
2448device		mmc
2449device		mmcsd
2450device		sdhci
2451
2452#
2453# SMB bus
2454#
2455# System Management Bus support is provided by the 'smbus' device.
2456# Access to the SMBus device is via the 'smb' device (/dev/smb*),
2457# which is a child of the 'smbus' device.
2458#
2459# Supported devices:
2460# smb		standard I/O through /dev/smb*
2461#
2462# Supported SMB interfaces:
2463# iicsmb	I2C to SMB bridge with any iicbus interface
2464# bktr		brooktree848 I2C hardware interface
2465# intpm		Intel PIIX4 (82371AB, 82443MX) Power Management Unit
2466# alpm		Acer Aladdin-IV/V/Pro2 Power Management Unit
2467# ichsmb	Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
2468# viapm		VIA VT82C586B/596B/686A and VT8233 Power Management Unit
2469# amdpm		AMD 756 Power Management Unit
2470# amdsmb	AMD 8111 SMBus 2.0 Controller
2471# nfpm		NVIDIA nForce Power Management Unit
2472# nfsmb		NVIDIA nForce2/3/4 MCP SMBus 2.0 Controller
2473#
2474device		smbus		# Bus support, required for smb below.
2475
2476device		intpm
2477device		alpm
2478device		ichsmb
2479device		viapm
2480device		amdpm
2481device		amdsmb
2482device		nfpm
2483device		nfsmb
2484
2485device		smb
2486
2487#
2488# I2C Bus
2489#
2490# Philips i2c bus support is provided by the `iicbus' device.
2491#
2492# Supported devices:
2493# ic	i2c network interface
2494# iic	i2c standard io
2495# iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
2496# iicoc simple polling driver for OpenCores I2C controller
2497#
2498# Supported interfaces:
2499# bktr	brooktree848 I2C software interface
2500#
2501# Other:
2502# iicbb	generic I2C bit-banging code (needed by lpbb, bktr)
2503#
2504device		iicbus		# Bus support, required for ic/iic/iicsmb below.
2505device		iicbb
2506
2507device		ic
2508device		iic
2509device		iicsmb		# smb over i2c bridge
2510device		iicoc		# OpenCores I2C controller support
2511
2512# I2C peripheral devices
2513#
2514# ds133x	Dallas Semiconductor DS1337, DS1338 and DS1339 RTC
2515# ds1374	Dallas Semiconductor DS1374 RTC
2516# ds1672	Dallas Semiconductor DS1672 RTC
2517# s35390a	Seiko Instruments S-35390A RTC
2518#
2519device		ds133x
2520device		ds1374
2521device		ds1672
2522device		s35390a
2523
2524# Parallel-Port Bus
2525#
2526# Parallel port bus support is provided by the `ppbus' device.
2527# Multiple devices may be attached to the parallel port, devices
2528# are automatically probed and attached when found.
2529#
2530# Supported devices:
2531# vpo	Iomega Zip Drive
2532#	Requires SCSI disk support ('scbus' and 'da'), best
2533#	performance is achieved with ports in EPP 1.9 mode.
2534# lpt	Parallel Printer
2535# plip	Parallel network interface
2536# ppi	General-purpose I/O ("Geek Port") + IEEE1284 I/O
2537# pps	Pulse per second Timing Interface
2538# lpbb	Philips official parallel port I2C bit-banging interface
2539# pcfclock Parallel port clock driver.
2540#
2541# Supported interfaces:
2542# ppc	ISA-bus parallel port interfaces.
2543#
2544
2545options 	PPC_PROBE_CHIPSET # Enable chipset specific detection
2546				  # (see flags in ppc(4))
2547options 	DEBUG_1284	# IEEE1284 signaling protocol debug
2548options 	PERIPH_1284	# Makes your computer act as an IEEE1284
2549				# compliant peripheral
2550options 	DONTPROBE_1284	# Avoid boot detection of PnP parallel devices
2551options 	VP0_DEBUG	# ZIP/ZIP+ debug
2552options 	LPT_DEBUG	# Printer driver debug
2553options 	PPC_DEBUG	# Parallel chipset level debug
2554options 	PLIP_DEBUG	# Parallel network IP interface debug
2555options 	PCFCLOCK_VERBOSE         # Verbose pcfclock driver
2556options 	PCFCLOCK_MAX_RETRIES=5   # Maximum read tries (default 10)
2557
2558device		ppc
2559hint.ppc.0.at="isa"
2560hint.ppc.0.irq="7"
2561device		ppbus
2562device		vpo
2563device		lpt
2564device		plip
2565device		ppi
2566device		pps
2567device		lpbb
2568device		pcfclock
2569
2570# Kernel BOOTP support
2571
2572options 	BOOTP		# Use BOOTP to obtain IP address/hostname
2573				# Requires NFSCLIENT and NFS_ROOT
2574options 	BOOTP_NFSROOT	# NFS mount root filesystem using BOOTP info
2575options 	BOOTP_NFSV3	# Use NFS v3 to NFS mount root
2576options 	BOOTP_COMPAT	# Workaround for broken bootp daemons.
2577options 	BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
2578options 	BOOTP_BLOCKSIZE=8192 # Override NFS block size
2579
2580#
2581# Add software watchdog routines.
2582#
2583options 	SW_WATCHDOG
2584
2585#
2586# Add the software deadlock resolver thread.
2587#
2588options 	DEADLKRES
2589
2590#
2591# Disable swapping of stack pages.  This option removes all
2592# code which actually performs swapping, so it's not possible to turn
2593# it back on at run-time.
2594#
2595# This is sometimes usable for systems which don't have any swap space
2596# (see also sysctls "vm.defer_swapspace_pageouts" and
2597# "vm.disable_swapspace_pageouts")
2598#
2599#options 	NO_SWAPPING
2600
2601# Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
2602# for sendfile(2) that are used to map file VM pages, and normally
2603# default to a quantity that is roughly 16*MAXUSERS+512. You would
2604# typically want about 4 of these for each simultaneous file send.
2605#
2606options 	NSFBUFS=1024
2607
2608#
2609# Enable extra debugging code for locks.  This stores the filename and
2610# line of whatever acquired the lock in the lock itself, and changes a
2611# number of function calls to pass around the relevant data.  This is
2612# not at all useful unless you are debugging lock code.  Also note
2613# that it is likely to break e.g. fstat(1) unless you recompile your
2614# userland with -DDEBUG_LOCKS as well.
2615#
2616options 	DEBUG_LOCKS
2617
2618
2619#####################################################################
2620# USB support
2621# UHCI controller
2622device		uhci
2623# OHCI controller
2624device		ohci
2625# EHCI controller
2626device		ehci
2627# XHCI controller
2628device		xhci
2629# SL811 Controller
2630#device		slhci
2631# General USB code (mandatory for USB)
2632device		usb
2633#
2634# USB Double Bulk Pipe devices
2635device		udbp
2636# USB Fm Radio
2637device		ufm
2638# Human Interface Device (anything with buttons and dials)
2639device		uhid
2640# USB keyboard
2641device		ukbd
2642# USB printer
2643device		ulpt
2644# USB mass storage driver (Requires scbus and da)
2645device		umass
2646# USB mass storage driver for device-side mode
2647device		usfs
2648# USB support for Belkin F5U109 and Magic Control Technology serial adapters
2649device		umct
2650# USB modem support
2651device		umodem
2652# USB mouse
2653device		ums
2654# eGalax USB touch screen
2655device		uep
2656# Diamond Rio 500 MP3 player
2657device		urio
2658#
2659# USB serial support
2660device		ucom
2661# USB support for 3G modem cards by Option, Novatel, Huawei and Sierra
2662device		u3g
2663# USB support for Technologies ARK3116 based serial adapters
2664device		uark
2665# USB support for Belkin F5U103 and compatible serial adapters
2666device		ubsa
2667# USB support for serial adapters based on the FT8U100AX and FT8U232AM
2668device		uftdi
2669# USB support for some Windows CE based serial communication.
2670device		uipaq
2671# USB support for Prolific PL-2303 serial adapters
2672device		uplcom
2673# USB support for Silicon Laboratories CP2101/CP2102 based USB serial adapters
2674device		uslcom
2675# USB Visor and Palm devices
2676device		uvisor
2677# USB serial support for DDI pocket's PHS
2678device		uvscom
2679#
2680# ADMtek USB ethernet. Supports the LinkSys USB100TX,
2681# the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
2682# and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
2683# eval board.
2684device		aue
2685
2686# ASIX Electronics AX88172 USB 2.0 ethernet driver. Used in the
2687# LinkSys USB200M and various other adapters.
2688device		axe
2689
2690#
2691# Devices which communicate using Ethernet over USB, particularly
2692# Communication Device Class (CDC) Ethernet specification. Supports
2693# Sharp Zaurus PDAs, some DOCSIS cable modems and so on.
2694device		cdce
2695#
2696# CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
2697# and Netmate II, and the Belkin F5U111.
2698device		cue
2699#
2700# Kawasaki LSI ethernet. Supports the LinkSys USB10T,
2701# Entrega USB-NET-E45, Peracom Ethernet Adapter, the
2702# 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
2703# the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
2704# and 2104USB, and the Corega USB-T.
2705device		kue
2706#
2707# RealTek RTL8150 USB to fast ethernet. Supports the Melco LUA-KTX
2708# and the GREEN HOUSE GH-USB100B.
2709device		rue
2710#
2711# Davicom DM9601E USB to fast ethernet. Supports the Corega FEther USB-TXC.
2712device		udav
2713#
2714# Moschip MCS7730/MCS7840 USB to fast ethernet. Supports the Sitecom LN030.
2715device		mos
2716#
2717# HSxPA devices from Option N.V
2718device		uhso
2719
2720# Realtek RTL8188SU/RTL8191SU/RTL8192SU wireless driver
2721device		rsu
2722#
2723# Ralink Technology RT2501USB/RT2601USB wireless driver
2724device		rum
2725# Ralink Technology RT2700U/RT2800U/RT3000U wireless driver
2726device		run
2727#
2728# Atheros AR5523 wireless driver
2729device		uath
2730#
2731# Conexant/Intersil PrismGT wireless driver
2732device		upgt
2733#
2734# Ralink Technology RT2500USB wireless driver
2735device		ural
2736#
2737# Realtek RTL8187B/L wireless driver
2738device		urtw
2739#
2740# Realtek RTL8188CU/RTL8192CU wireless driver
2741device		urtwn
2742#
2743# ZyDas ZD1211/ZD1211B wireless driver
2744device		zyd
2745#
2746# Sierra USB wireless driver
2747device		usie
2748
2749#
2750# debugging options for the USB subsystem
2751#
2752options 	USB_DEBUG
2753options 	U3G_DEBUG
2754
2755# options for ukbd:
2756options 	UKBD_DFLT_KEYMAP	# specify the built-in keymap
2757makeoptions	UKBD_DFLT_KEYMAP=it.iso
2758
2759# options for uplcom:
2760options 	UPLCOM_INTR_INTERVAL=100	# interrupt pipe interval
2761						# in milliseconds
2762
2763# options for uvscom:
2764options 	UVSCOM_DEFAULT_OPKTSIZE=8	# default output packet size
2765options 	UVSCOM_INTR_INTERVAL=100	# interrupt pipe interval
2766						# in milliseconds
2767
2768#####################################################################
2769# FireWire support
2770
2771device		firewire	# FireWire bus code
2772device		sbp		# SCSI over Firewire (Requires scbus and da)
2773device		sbp_targ	# SBP-2 Target mode  (Requires scbus and targ)
2774device		fwe		# Ethernet over FireWire (non-standard!)
2775device		fwip		# IP over FireWire (RFC2734 and RFC3146)
2776
2777#####################################################################
2778# dcons support (Dumb Console Device)
2779
2780device		dcons			# dumb console driver
2781device		dcons_crom		# FireWire attachment
2782options 	DCONS_BUF_SIZE=16384	# buffer size
2783options 	DCONS_POLL_HZ=100	# polling rate
2784options 	DCONS_FORCE_CONSOLE=0	# force to be the primary console
2785options 	DCONS_FORCE_GDB=1	# force to be the gdb device
2786
2787#####################################################################
2788# crypto subsystem
2789#
2790# This is a port of the OpenBSD crypto framework.  Include this when
2791# configuring IPSEC and when you have a h/w crypto device to accelerate
2792# user applications that link to OpenSSL.
2793#
2794# Drivers are ports from OpenBSD with some simple enhancements that have
2795# been fed back to OpenBSD.
2796
2797device		crypto		# core crypto support
2798device		cryptodev	# /dev/crypto for access to h/w
2799
2800device		rndtest		# FIPS 140-2 entropy tester
2801
2802device		hifn		# Hifn 7951, 7781, etc.
2803options 	HIFN_DEBUG	# enable debugging support: hw.hifn.debug
2804options 	HIFN_RNDTEST	# enable rndtest support
2805
2806device		ubsec		# Broadcom 5501, 5601, 58xx
2807options 	UBSEC_DEBUG	# enable debugging support: hw.ubsec.debug
2808options 	UBSEC_RNDTEST	# enable rndtest support
2809
2810#####################################################################
2811
2812
2813#
2814# Embedded system options:
2815#
2816# An embedded system might want to run something other than init.
2817options 	INIT_PATH=/sbin/init:/rescue/init
2818
2819# Debug options
2820options 	BUS_DEBUG	# enable newbus debugging
2821options 	DEBUG_VFS_LOCKS	# enable VFS lock debugging
2822options 	SOCKBUF_DEBUG	# enable sockbuf last record/mb tail checking
2823
2824#
2825# Verbose SYSINIT
2826#
2827# Make the SYSINIT process performed by mi_startup() verbose.  This is very
2828# useful when porting to a new architecture.  If DDB is also enabled, this
2829# will print function names instead of addresses.
2830options 	VERBOSE_SYSINIT
2831
2832#####################################################################
2833# SYSV IPC KERNEL PARAMETERS
2834#
2835# Maximum number of System V semaphores that can be used on the system at
2836# one time.
2837options 	SEMMNI=11
2838
2839# Total number of semaphores system wide
2840options 	SEMMNS=61
2841
2842# Total number of undo structures in system
2843options 	SEMMNU=31
2844
2845# Maximum number of System V semaphores that can be used by a single process
2846# at one time.
2847options 	SEMMSL=61
2848
2849# Maximum number of operations that can be outstanding on a single System V
2850# semaphore at one time.
2851options 	SEMOPM=101
2852
2853# Maximum number of undo operations that can be outstanding on a single
2854# System V semaphore at one time.
2855options 	SEMUME=11
2856
2857# Maximum number of shared memory pages system wide.
2858options 	SHMALL=1025
2859
2860# Maximum size, in bytes, of a single System V shared memory region.
2861options 	SHMMAX=(SHMMAXPGS*PAGE_SIZE+1)
2862options 	SHMMAXPGS=1025
2863
2864# Minimum size, in bytes, of a single System V shared memory region.
2865options 	SHMMIN=2
2866
2867# Maximum number of shared memory regions that can be used on the system
2868# at one time.
2869options 	SHMMNI=33
2870
2871# Maximum number of System V shared memory regions that can be attached to
2872# a single process at one time.
2873options 	SHMSEG=9
2874
2875# Compress user core dumps.
2876options		COMPRESS_USER_CORES
2877# required to compress file output from kernel for COMPRESS_USER_CORES.
2878device		gzio
2879
2880# Set the amount of time (in seconds) the system will wait before
2881# rebooting automatically when a kernel panic occurs.  If set to (-1),
2882# the system will wait indefinitely until a key is pressed on the
2883# console.
2884options 	PANIC_REBOOT_WAIT_TIME=16
2885
2886# Attempt to bypass the buffer cache and put data directly into the
2887# userland buffer for read operation when O_DIRECT flag is set on the
2888# file.  Both offset and length of the read operation must be
2889# multiples of the physical media sector size.
2890#
2891options 	DIRECTIO
2892
2893# Specify a lower limit for the number of swap I/O buffers.  They are
2894# (among other things) used when bypassing the buffer cache due to
2895# DIRECTIO kernel option enabled and O_DIRECT flag set on file.
2896#
2897options 	NSWBUF_MIN=120
2898
2899#####################################################################
2900
2901# More undocumented options for linting.
2902# Note that documenting these is not considered an affront.
2903
2904options 	CAM_DEBUG_DELAY
2905
2906# VFS cluster debugging.
2907options 	CLUSTERDEBUG
2908
2909options 	DEBUG
2910
2911# Kernel filelock debugging.
2912options 	LOCKF_DEBUG
2913
2914# System V compatible message queues
2915# Please note that the values provided here are used to test kernel
2916# building.  The defaults in the sources provide almost the same numbers.
2917# MSGSSZ must be a power of 2 between 8 and 1024.
2918options 	MSGMNB=2049	# Max number of chars in queue
2919options 	MSGMNI=41	# Max number of message queue identifiers
2920options 	MSGSEG=2049	# Max number of message segments
2921options 	MSGSSZ=16	# Size of a message segment
2922options 	MSGTQL=41	# Max number of messages in system
2923
2924options 	NBUF=512	# Number of buffer headers
2925
2926options 	SCSI_NCR_DEBUG
2927options 	SCSI_NCR_MAX_SYNC=10000
2928options 	SCSI_NCR_MAX_WIDE=1
2929options 	SCSI_NCR_MYADDR=7
2930
2931options 	SC_DEBUG_LEVEL=5	# Syscons debug level
2932options 	SC_RENDER_DEBUG	# syscons rendering debugging
2933
2934options 	VFS_BIO_DEBUG	# VFS buffer I/O debugging
2935
2936options 	KSTACK_MAX_PAGES=32 # Maximum pages to give the kernel stack
2937
2938# Adaptec Array Controller driver options
2939options 	AAC_DEBUG	# Debugging levels:
2940				# 0 - quiet, only emit warnings
2941				# 1 - noisy, emit major function
2942				#     points and things done
2943				# 2 - extremely noisy, emit trace
2944				#     items in loops, etc.
2945
2946# Resource Accounting
2947options 	RACCT
2948
2949# Resource Limits
2950options 	RCTL
2951
2952# Yet more undocumented options for linting.
2953# BKTR_ALLOC_PAGES has no effect except to cause warnings, and
2954# BROOKTREE_ALLOC_PAGES hasn't actually been superseded by it, since the
2955# driver still mostly spells this option BROOKTREE_ALLOC_PAGES.
2956##options 	BKTR_ALLOC_PAGES=(217*4+1)
2957options 	BROOKTREE_ALLOC_PAGES=(217*4+1)
2958options 	MAXFILES=999
2959
2960# Random number generator
2961options 	RANDOM_YARROW	# Yarrow RNG
2962##options 	RANDOM_FORTUNA	# Fortuna RNG - not yet implemented
2963options 	RANDOM_DEBUG	# Debugging messages
2964options 	RANDOM_RWFILE	# Read and write entropy cache
2965