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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		CHARNUCH_JA_PIERDOLE
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	9000000
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
148#
149# Compile-time defaults for dmesg boot tagging
150#
151# Default boot tag; may use 'kern.boot_tag' loader tunable to override.  The
152# current boot's tag is also exposed via the 'kern.boot_tag' sysctl.
153options 	BOOT_TAG=\"\"
154# Maximum boot tag size the kernel's static buffer should accomodate.  Maximum
155# size for both BOOT_TAG and the assocated tunable.
156options 	BOOT_TAG_SZ=32
157
158options 	GEOM_BDE		# Disk encryption.
159options 	GEOM_CACHE		# Disk cache.
160options 	GEOM_CONCAT		# Disk concatenation.
161options 	GEOM_ELI		# Disk encryption.
162options 	GEOM_GATE		# Userland services.
163options 	GEOM_JOURNAL		# Journaling.
164options 	GEOM_LABEL		# Providers labelization.
165options 	GEOM_LINUX_LVM		# Linux LVM2 volumes
166options 	GEOM_MAP		# Map based partitioning
167options 	GEOM_MIRROR		# Disk mirroring.
168options 	GEOM_MULTIPATH		# Disk multipath
169options 	GEOM_NOP		# Test class.
170options 	GEOM_PART_APM		# Apple partitioning
171options 	GEOM_PART_BSD		# BSD disklabel
172options 	GEOM_PART_BSD64		# BSD disklabel64
173options 	GEOM_PART_EBR		# Extended Boot Records
174options 	GEOM_PART_EBR_COMPAT	# Backward compatible partition names
175options 	GEOM_PART_GPT		# GPT partitioning
176options 	GEOM_PART_LDM		# Logical Disk Manager
177options 	GEOM_PART_MBR		# MBR partitioning
178options 	GEOM_PART_VTOC8		# SMI VTOC8 disk label
179options 	GEOM_RAID		# Soft RAID functionality.
180options 	GEOM_RAID3		# RAID3 functionality.
181options 	GEOM_SHSEC		# Shared secret.
182options 	GEOM_STRIPE		# Disk striping.
183options 	GEOM_UZIP		# Read-only compressed disks
184options 	GEOM_VINUM		# Vinum logical volume manager
185options 	GEOM_VIRSTOR		# Virtual storage.
186options 	GEOM_ZERO		# Performance testing helper.
187
188#
189# The root device and filesystem type can be compiled in;
190# this provides a fallback option if the root device cannot
191# be correctly guessed by the bootstrap code, or an override if
192# the RB_DFLTROOT flag (-r) is specified when booting the kernel.
193#
194options 	ROOTDEVNAME=\"ufs:da0s2e\"
195
196
197#####################################################################
198# Scheduler options:
199#
200# Specifying one of SCHED_4BSD or SCHED_ULE is mandatory.  These options
201# select which scheduler is compiled in.
202#
203# SCHED_4BSD is the historical, proven, BSD scheduler.  It has a global run
204# queue and no CPU affinity which makes it suboptimal for SMP.  It has very
205# good interactivity and priority selection.
206#
207# SCHED_ULE provides significant performance advantages over 4BSD on many
208# workloads on SMP machines.  It supports cpu-affinity, per-cpu runqueues
209# and scheduler locks.  It also has a stronger notion of interactivity 
210# which leads to better responsiveness even on uniprocessor machines.  This
211# is the default scheduler.
212#
213# SCHED_STATS is a debugging option which keeps some stats in the sysctl
214# tree at 'kern.sched.stats' and is useful for debugging scheduling decisions.
215#
216options 	SCHED_4BSD
217options 	SCHED_STATS
218#options 	SCHED_ULE
219
220#####################################################################
221# SMP OPTIONS:
222#
223# SMP enables building of a Symmetric MultiProcessor Kernel.
224
225# Mandatory:
226options 	SMP			# Symmetric MultiProcessor Kernel
227
228# EARLY_AP_STARTUP releases the Application Processors earlier in the
229# kernel startup process (before devices are probed) rather than at the
230# end.  This is a temporary option for use during the transition from
231# late to early AP startup.
232options		EARLY_AP_STARTUP
233
234# MAXCPU defines the maximum number of CPUs that can boot in the system.
235# A default value should be already present, for every architecture.
236options 	MAXCPU=32
237
238# NUMA enables use of Non-Uniform Memory Access policies in various kernel
239# subsystems.
240options 	NUMA
241
242# MAXMEMDOM defines the maximum number of memory domains that can boot in the
243# system.  A default value should already be defined by every architecture.
244options 	MAXMEMDOM=2
245
246# ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin
247# if the thread that currently owns the mutex is executing on another
248# CPU.  This behavior is enabled by default, so this option can be used
249# to disable it.
250options 	NO_ADAPTIVE_MUTEXES
251
252# ADAPTIVE_RWLOCKS changes the behavior of reader/writer locks to spin
253# if the thread that currently owns the rwlock is executing on another
254# CPU.  This behavior is enabled by default, so this option can be used
255# to disable it.
256options 	NO_ADAPTIVE_RWLOCKS
257
258# ADAPTIVE_SX changes the behavior of sx locks to spin if the thread that
259# currently owns the sx lock is executing on another CPU.
260# This behavior is enabled by default, so this option can be used to
261# disable it.
262options 	NO_ADAPTIVE_SX
263
264# MUTEX_NOINLINE forces mutex operations to call functions to perform each
265# operation rather than inlining the simple cases.  This can be used to
266# shrink the size of the kernel text segment.  Note that this behavior is
267# already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
268# and WITNESS options.
269options 	MUTEX_NOINLINE
270
271# RWLOCK_NOINLINE forces rwlock operations to call functions to perform each
272# operation rather than inlining the simple cases.  This can be used to
273# shrink the size of the kernel text segment.  Note that this behavior is
274# already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
275# and WITNESS options.
276options 	RWLOCK_NOINLINE
277
278# SX_NOINLINE forces sx lock operations to call functions to perform each
279# operation rather than inlining the simple cases.  This can be used to
280# shrink the size of the kernel text segment.  Note that this behavior is
281# already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
282# and WITNESS options.
283options 	SX_NOINLINE
284
285# SMP Debugging Options:
286#
287# CALLOUT_PROFILING enables rudimentary profiling of the callwheel data
288#	  structure used as backend in callout(9).
289# PREEMPTION allows the threads that are in the kernel to be preempted by
290#	  higher priority [interrupt] threads.  It helps with interactivity
291#	  and allows interrupt threads to run sooner rather than waiting.
292#	  WARNING! Only tested on amd64 and i386.
293# FULL_PREEMPTION instructs the kernel to preempt non-realtime kernel
294#	  threads.  Its sole use is to expose race conditions and other
295#	  bugs during development.  Enabling this option will reduce
296#	  performance and increase the frequency of kernel panics by
297#	  design.  If you aren't sure that you need it then you don't.
298#	  Relies on the PREEMPTION option.  DON'T TURN THIS ON.
299# SLEEPQUEUE_PROFILING enables rudimentary profiling of the hash table
300#	  used to hold active sleep queues as well as sleep wait message
301#	  frequency.
302# TURNSTILE_PROFILING enables rudimentary profiling of the hash table
303#	  used to hold active lock queues.
304# UMTX_PROFILING enables rudimentary profiling of the hash table used 
305#	  to hold active lock queues.
306# WITNESS enables the witness code which detects deadlocks and cycles
307#         during locking operations.
308# WITNESS_KDB causes the witness code to drop into the kernel debugger if
309#	  a lock hierarchy violation occurs or if locks are held when going to
310#	  sleep.
311# WITNESS_SKIPSPIN disables the witness checks on spin mutexes.
312options 	PREEMPTION
313options 	FULL_PREEMPTION
314options 	WITNESS
315options 	WITNESS_KDB
316options 	WITNESS_SKIPSPIN
317
318# LOCK_PROFILING - Profiling locks.  See LOCK_PROFILING(9) for details.
319options 	LOCK_PROFILING
320# Set the number of buffers and the hash size.  The hash size MUST be larger
321# than the number of buffers.  Hash size should be prime.
322options 	MPROF_BUFFERS="1536"
323options 	MPROF_HASH_SIZE="1543"
324
325# Profiling for the callout(9) backend.
326options 	CALLOUT_PROFILING
327
328# Profiling for internal hash tables.
329options 	SLEEPQUEUE_PROFILING
330options 	TURNSTILE_PROFILING
331options 	UMTX_PROFILING
332
333
334#####################################################################
335# COMPATIBILITY OPTIONS
336
337# Old tty interface.
338options 	COMPAT_43TTY
339
340# Note that as a general rule, COMPAT_FREEBSD<n> depends on
341# COMPAT_FREEBSD<n+1>, COMPAT_FREEBSD<n+2>, etc.
342
343# Enable FreeBSD4 compatibility syscalls
344options 	COMPAT_FREEBSD4
345
346# Enable FreeBSD5 compatibility syscalls
347options 	COMPAT_FREEBSD5
348
349# Enable FreeBSD6 compatibility syscalls
350options 	COMPAT_FREEBSD6
351
352# Enable FreeBSD7 compatibility syscalls
353options 	COMPAT_FREEBSD7
354
355# Enable FreeBSD9 compatibility syscalls
356options 	COMPAT_FREEBSD9
357
358# Enable FreeBSD10 compatibility syscalls
359options 	COMPAT_FREEBSD10
360
361# Enable FreeBSD11 compatibility syscalls
362options 	COMPAT_FREEBSD11
363
364# Enable FreeBSD12 compatibility syscalls
365options 	COMPAT_FREEBSD12
366
367# Enable Linux Kernel Programming Interface
368options 	COMPAT_LINUXKPI
369
370#
371# These three options provide support for System V Interface
372# Definition-style interprocess communication, in the form of shared
373# memory, semaphores, and message queues, respectively.
374#
375options 	SYSVSHM
376options 	SYSVSEM
377options 	SYSVMSG
378
379
380#####################################################################
381# DEBUGGING OPTIONS
382
383#
384# Compile with kernel debugger related code.
385#
386options 	KDB
387
388#
389# Print a stack trace of the current thread on the console for a panic.
390#
391options 	KDB_TRACE
392
393#
394# Don't enter the debugger for a panic. Intended for unattended operation
395# where you may want to enter the debugger from the console, but still want
396# the machine to recover from a panic.
397#
398options 	KDB_UNATTENDED
399
400#
401# Enable the ddb debugger backend.
402#
403options 	DDB
404
405#
406# Print the numerical value of symbols in addition to the symbolic
407# representation.
408#
409options 	DDB_NUMSYM
410
411#
412# Enable the remote gdb debugger backend.
413#
414options 	GDB
415
416#
417# SYSCTL_DEBUG enables a 'sysctl' debug tree that can be used to dump the
418# contents of the registered sysctl nodes on the console.  It is disabled by
419# default because it generates excessively verbose console output that can
420# interfere with serial console operation.
421#
422options 	SYSCTL_DEBUG
423
424#
425# Enable textdump by default, this disables kernel core dumps.
426#
427options		TEXTDUMP_PREFERRED
428
429#
430# Enable extra debug messages while performing textdumps.
431#
432options		TEXTDUMP_VERBOSE
433
434#
435# NO_SYSCTL_DESCR omits the sysctl node descriptions to save space in the
436# resulting kernel.
437options		NO_SYSCTL_DESCR
438
439#
440# MALLOC_DEBUG_MAXZONES enables multiple uma zones for malloc(9)
441# allocations that are smaller than a page.  The purpose is to isolate
442# different malloc types into hash classes, so that any buffer
443# overruns or use-after-free will usually only affect memory from
444# malloc types in that hash class.  This is purely a debugging tool;
445# by varying the hash function and tracking which hash class was
446# corrupted, the intersection of the hash classes from each instance
447# will point to a single malloc type that is being misused.  At this
448# point inspection or memguard(9) can be used to catch the offending
449# code.
450#
451options 	MALLOC_DEBUG_MAXZONES=8
452
453#
454# DEBUG_MEMGUARD builds and enables memguard(9), a replacement allocator
455# for the kernel used to detect modify-after-free scenarios.  See the
456# memguard(9) man page for more information on usage.
457#
458options 	DEBUG_MEMGUARD
459
460#
461# DEBUG_REDZONE enables buffer underflows and buffer overflows detection for
462# malloc(9).
463#
464options 	DEBUG_REDZONE
465
466#
467# EARLY_PRINTF enables support for calling a special printf (eprintf)
468# very early in the kernel (before cn_init() has been called).  This
469# should only be used for debugging purposes early in boot.  Normally,
470# it is not defined.  It is commented out here because this feature
471# isn't generally available. And the required eputc() isn't defined.
472#
473#options	EARLY_PRINTF
474
475#
476# KTRACE enables the system-call tracing facility ktrace(2).  To be more
477# SMP-friendly, KTRACE uses a worker thread to process most trace events
478# asynchronously to the thread generating the event.  This requires a
479# pre-allocated store of objects representing trace events.  The
480# KTRACE_REQUEST_POOL option specifies the initial size of this store.
481# The size of the pool can be adjusted both at boottime and runtime via
482# the kern.ktrace_request_pool tunable and sysctl.
483#
484options 	KTRACE			#kernel tracing
485options 	KTRACE_REQUEST_POOL=101
486
487#
488# KTR is a kernel tracing facility imported from BSD/OS.  It is
489# enabled with the KTR option.  KTR_ENTRIES defines the number of
490# entries in the circular trace buffer; it may be an arbitrary number.
491# KTR_BOOT_ENTRIES defines the number of entries during the early boot,
492# before malloc(9) is functional.
493# KTR_COMPILE defines the mask of events to compile into the kernel as
494# defined by the KTR_* constants in <sys/ktr.h>.  KTR_MASK defines the
495# initial value of the ktr_mask variable which determines at runtime
496# what events to trace.  KTR_CPUMASK determines which CPU's log
497# events, with bit X corresponding to CPU X.  The layout of the string
498# passed as KTR_CPUMASK must match a series of bitmasks each of them
499# separated by the "," character (ie:
500# KTR_CPUMASK=0xAF,0xFFFFFFFFFFFFFFFF).  KTR_VERBOSE enables
501# dumping of KTR events to the console by default.  This functionality
502# can be toggled via the debug.ktr_verbose sysctl and defaults to off
503# if KTR_VERBOSE is not defined.  See ktr(4) and ktrdump(8) for details.
504#
505options 	KTR
506options 	KTR_BOOT_ENTRIES=1024
507options 	KTR_ENTRIES=(128*1024)
508options 	KTR_COMPILE=(KTR_ALL)
509options 	KTR_MASK=KTR_INTR
510options 	KTR_CPUMASK=0x3
511options 	KTR_VERBOSE
512
513#
514# ALQ(9) is a facility for the asynchronous queuing of records from the kernel
515# to a vnode, and is employed by services such as ktr(4) to produce trace
516# files based on a kernel event stream.  Records are written asynchronously
517# in a worker thread.
518#
519options 	ALQ
520options 	KTR_ALQ
521
522#
523# The INVARIANTS option is used in a number of source files to enable
524# extra sanity checking of internal structures.  This support is not
525# enabled by default because of the extra time it would take to check
526# for these conditions, which can only occur as a result of
527# programming errors.
528#
529options 	INVARIANTS
530
531#
532# The INVARIANT_SUPPORT option makes us compile in support for
533# verifying some of the internal structures.  It is a prerequisite for
534# 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
535# called.  The intent is that you can set 'INVARIANTS' for single
536# source files (by changing the source file or specifying it on the
537# command line) if you have 'INVARIANT_SUPPORT' enabled.  Also, if you
538# wish to build a kernel module with 'INVARIANTS', then adding
539# 'INVARIANT_SUPPORT' to your kernel will provide all the necessary
540# infrastructure without the added overhead.
541#
542options 	INVARIANT_SUPPORT
543
544#
545# The KASSERT_PANIC_OPTIONAL option allows kasserts to fire without
546# necessarily inducing a panic.  Panic is the default behavior, but
547# runtime options can configure it either entirely off, or off with a
548# limit.
549#
550options 	KASSERT_PANIC_OPTIONAL
551
552#
553# The DIAGNOSTIC option is used to enable extra debugging information
554# and invariants checking.  The added checks are too expensive or noisy
555# for an INVARIANTS kernel and thus are disabled by default.  It is
556# expected that a kernel configured with DIAGNOSTIC will also have the
557# INVARIANTS option enabled.
558#
559options 	DIAGNOSTIC
560
561#
562# REGRESSION causes optional kernel interfaces necessary only for regression
563# testing to be enabled.  These interfaces may constitute security risks
564# when enabled, as they permit processes to easily modify aspects of the
565# run-time environment to reproduce unlikely or unusual (possibly normally
566# impossible) scenarios.
567#
568options 	REGRESSION
569
570#
571# This option lets some drivers co-exist that can't co-exist in a running
572# system.  This is used to be able to compile all kernel code in one go for
573# quality assurance purposes (like this file, which the option takes it name
574# from.)
575#
576options 	COMPILING_LINT
577
578#
579# STACK enables the stack(9) facility, allowing the capture of kernel stack
580# for the purpose of procinfo(1), etc.  stack(9) will also be compiled in
581# automatically if DDB(4) is compiled into the kernel.
582#
583options 	STACK
584
585#
586# The NUM_CORE_FILES option specifies the limit for the number of core
587# files generated by a particular process, when the core file format
588# specifier includes the %I pattern. Since we only have 1 character for
589# the core count in the format string, meaning the range will be 0-9, the
590# maximum value allowed for this option is 10.
591# This core file limit can be adjusted at runtime via the debug.ncores
592# sysctl.
593#
594options 	NUM_CORE_FILES=5
595
596#
597# The TSLOG option enables timestamped logging of events, especially
598# function entries/exits, in order to track the time spent by the kernel.
599# In particular, this is useful when investigating the early boot process,
600# before it is possible to use more sophisticated tools like DTrace.
601# The TSLOGSIZE option controls the size of the (preallocated, fixed
602# length) buffer used for storing these events (default: 262144 records).
603#
604# For security reasons the TSLOG option should not be enabled on systems
605# used in production.
606#
607options 	TSLOG
608options 	TSLOGSIZE=262144
609
610
611#####################################################################
612# PERFORMANCE MONITORING OPTIONS
613
614#
615# The hwpmc driver that allows the use of in-CPU performance monitoring
616# counters for performance monitoring.  The base kernel needs to be configured
617# with the 'options' line, while the hwpmc device can be either compiled
618# in or loaded as a loadable kernel module.
619#
620# Additional configuration options may be required on specific architectures,
621# please see hwpmc(4).
622
623device		hwpmc			# Driver (also a loadable module)
624options 	HWPMC_DEBUG
625options 	HWPMC_HOOKS		# Other necessary kernel hooks
626
627
628#####################################################################
629# NETWORKING OPTIONS
630
631#
632# Protocol families
633#
634options 	INET			#Internet communications protocols
635options 	INET6			#IPv6 communications protocols
636
637options		RATELIMIT		# TX rate limiting support
638
639options 	ROUTETABLES=2		# allocated fibs up to 65536. default is 1.
640					# but that would be a bad idea as they are large.
641
642options 	TCP_OFFLOAD		# TCP offload support.
643options		TCP_RFC7413		# TCP Fast Open
644
645options		TCPHPTS
646
647# In order to enable IPSEC you MUST also add device crypto to 
648# your kernel configuration
649options 	IPSEC			#IP security (requires device crypto)
650
651# Option IPSEC_SUPPORT does not enable IPsec, but makes it possible to 
652# load it as a kernel module. You still MUST add device crypto to your kernel
653# configuration.
654options		IPSEC_SUPPORT
655#options 	IPSEC_DEBUG		#debug for IP security
656
657
658# TLS framing and encryption of data transmitted over TCP sockets.
659options		KERN_TLS		# TLS transmit offload
660
661#
662# SMB/CIFS requester
663# NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
664# options.
665options 	NETSMB			#SMB/CIFS requester
666
667# mchain library. It can be either loaded as KLD or compiled into kernel
668options 	LIBMCHAIN
669
670# libalias library, performing NAT
671options 	LIBALIAS
672
673#
674# SCTP is a NEW transport protocol defined by
675# RFC2960 updated by RFC3309 and RFC3758.. and
676# soon to have a new base RFC and many many more
677# extensions. This release supports all the extensions
678# including many drafts (most about to become RFC's).
679# It is the reference implementation of SCTP
680# and is quite well tested.
681#
682# Note YOU MUST have both INET and INET6 defined.
683# You don't have to enable V6, but SCTP is 
684# dual stacked and so far we have not torn apart
685# the V6 and V4.. since an association can span
686# both a V6 and V4 address at the SAME time :-)
687#
688options 	SCTP
689# There are bunches of options:
690# this one turns on all sorts of
691# nastily printing that you can
692# do. It's all controlled by a
693# bit mask (settable by socket opt and
694# by sysctl). Including will not cause
695# logging until you set the bits.. but it
696# can be quite verbose.. so without this
697# option we don't do any of the tests for
698# bits and prints.. which makes the code run
699# faster.. if you are not debugging don't use.
700options 	SCTP_DEBUG
701#
702# All that options after that turn on specific types of
703# logging. You can monitor CWND growth, flight size
704# and all sorts of things. Go look at the code and
705# see. I have used this to produce interesting 
706# charts and graphs as well :->
707# 
708# I have not yet committed the tools to get and print
709# the logs, I will do that eventually .. before then
710# if you want them send me an email rrs@freebsd.org
711# You basically must have ktr(4) enabled for these
712# and you then set the sysctl to turn on/off various
713# logging bits. Use ktrdump(8) to pull the log and run
714# it through a display program.. and graphs and other
715# things too.
716#
717options 	SCTP_LOCK_LOGGING
718options 	SCTP_MBUF_LOGGING
719options 	SCTP_MBCNT_LOGGING
720options 	SCTP_PACKET_LOGGING
721options 	SCTP_LTRACE_CHUNKS
722options 	SCTP_LTRACE_ERRORS
723
724
725# altq(9). Enable the base part of the hooks with the ALTQ option.
726# Individual disciplines must be built into the base system and can not be
727# loaded as modules at this point. ALTQ requires a stable TSC so if yours is
728# broken or changes with CPU throttling then you must also have the ALTQ_NOPCC
729# option.
730options 	ALTQ
731options 	ALTQ_CBQ	# Class Based Queueing
732options 	ALTQ_RED	# Random Early Detection
733options 	ALTQ_RIO	# RED In/Out
734options 	ALTQ_CODEL	# CoDel Active Queueing
735options 	ALTQ_HFSC	# Hierarchical Packet Scheduler
736options 	ALTQ_FAIRQ	# Fair Packet Scheduler
737options 	ALTQ_CDNR	# Traffic conditioner
738options 	ALTQ_PRIQ	# Priority Queueing
739options 	ALTQ_NOPCC	# Required if the TSC is unusable
740options 	ALTQ_DEBUG
741
742# netgraph(4). Enable the base netgraph code with the NETGRAPH option.
743# Individual node types can be enabled with the corresponding option
744# listed below; however, this is not strictly necessary as netgraph
745# will automatically load the corresponding KLD module if the node type
746# is not already compiled into the kernel. Each type below has a
747# corresponding man page, e.g., ng_async(8).
748options 	NETGRAPH		# netgraph(4) system
749options 	NETGRAPH_DEBUG		# enable extra debugging, this
750					# affects netgraph(4) and nodes
751# Node types
752options 	NETGRAPH_ASYNC
753options 	NETGRAPH_ATMLLC
754options 	NETGRAPH_ATM_ATMPIF
755options 	NETGRAPH_BLUETOOTH		# ng_bluetooth(4)
756options 	NETGRAPH_BLUETOOTH_BT3C		# ng_bt3c(4)
757options 	NETGRAPH_BLUETOOTH_HCI		# ng_hci(4)
758options 	NETGRAPH_BLUETOOTH_L2CAP	# ng_l2cap(4)
759options 	NETGRAPH_BLUETOOTH_SOCKET	# ng_btsocket(4)
760options 	NETGRAPH_BLUETOOTH_UBT		# ng_ubt(4)
761options 	NETGRAPH_BLUETOOTH_UBTBCMFW	# ubtbcmfw(4)
762options 	NETGRAPH_BPF
763options 	NETGRAPH_BRIDGE
764options 	NETGRAPH_CAR
765options 	NETGRAPH_CHECKSUM
766options 	NETGRAPH_CISCO
767options 	NETGRAPH_DEFLATE
768options 	NETGRAPH_DEVICE
769options 	NETGRAPH_ECHO
770options 	NETGRAPH_EIFACE
771options 	NETGRAPH_ETHER
772options 	NETGRAPH_FRAME_RELAY
773options 	NETGRAPH_GIF
774options 	NETGRAPH_GIF_DEMUX
775options 	NETGRAPH_HOLE
776options 	NETGRAPH_IFACE
777options 	NETGRAPH_IP_INPUT
778options 	NETGRAPH_IPFW
779options 	NETGRAPH_KSOCKET
780options 	NETGRAPH_L2TP
781options 	NETGRAPH_LMI
782options 	NETGRAPH_MPPC_COMPRESSION
783options 	NETGRAPH_MPPC_ENCRYPTION
784options 	NETGRAPH_NETFLOW
785options 	NETGRAPH_NAT
786options 	NETGRAPH_ONE2MANY
787options 	NETGRAPH_PATCH
788options 	NETGRAPH_PIPE
789options 	NETGRAPH_PPP
790options 	NETGRAPH_PPPOE
791options 	NETGRAPH_PPTPGRE
792options 	NETGRAPH_PRED1
793options 	NETGRAPH_RFC1490
794options 	NETGRAPH_SOCKET
795options 	NETGRAPH_SPLIT
796options 	NETGRAPH_SPPP
797options 	NETGRAPH_TAG
798options 	NETGRAPH_TCPMSS
799options 	NETGRAPH_TEE
800options 	NETGRAPH_UI
801options 	NETGRAPH_VJC
802options 	NETGRAPH_VLAN
803
804# NgATM - Netgraph ATM
805options 	NGATM_ATM
806options 	NGATM_ATMBASE
807options 	NGATM_SSCOP
808options 	NGATM_SSCFU
809options 	NGATM_UNI
810options 	NGATM_CCATM
811
812device		mn	# Munich32x/Falc54 Nx64kbit/sec cards.
813
814# Network stack virtualization.
815options	VIMAGE
816options	VNET_DEBUG	# debug for VIMAGE
817
818#
819# Network interfaces:
820#  The `loop' device is MANDATORY when networking is enabled.
821device		loop
822
823#  The `ether' device provides generic code to handle
824#  Ethernets; it is MANDATORY when an Ethernet device driver is
825#  configured.
826device		ether
827
828#  The `vlan' device implements the VLAN tagging of Ethernet frames
829#  according to IEEE 802.1Q.
830device		vlan
831
832# The `vxlan' device implements the VXLAN encapsulation of Ethernet
833# frames in UDP packets according to RFC7348.
834device		vxlan
835
836#  The `wlan' device provides generic code to support 802.11
837#  drivers, including host AP mode; it is MANDATORY for the wi,
838#  and ath drivers and will eventually be required by all 802.11 drivers.
839device		wlan
840options 	IEEE80211_DEBUG		#enable debugging msgs
841options 	IEEE80211_SUPPORT_MESH	#enable 802.11s D3.0 support
842options 	IEEE80211_SUPPORT_TDMA	#enable TDMA support
843
844#  The `wlan_wep', `wlan_tkip', and `wlan_ccmp' devices provide
845#  support for WEP, TKIP, and AES-CCMP crypto protocols optionally
846#  used with 802.11 devices that depend on the `wlan' module.
847device		wlan_wep
848device		wlan_ccmp
849device		wlan_tkip
850
851#  The `wlan_xauth' device provides support for external (i.e. user-mode)
852#  authenticators for use with 802.11 drivers that use the `wlan'
853#  module and support 802.1x and/or WPA security protocols.
854device		wlan_xauth
855
856#  The `wlan_acl' device provides a MAC-based access control mechanism
857#  for use with 802.11 drivers operating in ap mode and using the
858#  `wlan' module.
859#  The 'wlan_amrr' device provides AMRR transmit rate control algorithm
860device		wlan_acl
861device		wlan_amrr
862
863#  The `sppp' device serves a similar role for certain types
864#  of synchronous PPP links (like `cx', `ar').
865device		sppp
866
867#  The `bpf' device enables the Berkeley Packet Filter.  Be
868#  aware of the legal and administrative consequences of enabling this
869#  option.  DHCP requires bpf.
870device		bpf
871
872#  The `netmap' device implements memory-mapped access to network
873#  devices from userspace, enabling wire-speed packet capture and
874#  generation even at 10Gbit/s. Requires support in the device
875#  driver. Supported drivers are ixgbe, e1000, re.
876device		netmap
877
878#  The `disc' device implements a minimal network interface,
879#  which throws away all packets sent and never receives any.  It is
880#  included for testing and benchmarking purposes.
881device		disc
882
883# The `epair' device implements a virtual back-to-back connected Ethernet
884# like interface pair.
885device		epair
886
887#  The `edsc' device implements a minimal Ethernet interface,
888#  which discards all packets sent and receives none.
889device		edsc
890
891#  The `tuntap' device implements (user-)ppp, nos-tun(8) and a pty-like virtual
892#  Ethernet interface
893device		tuntap
894
895#  The `gif' device implements IPv6 over IP4 tunneling,
896#  IPv4 over IPv6 tunneling, IPv4 over IPv4 tunneling and
897#  IPv6 over IPv6 tunneling.
898#  The `gre' device implements GRE (Generic Routing Encapsulation) tunneling,
899#  as specified in the RFC 2784 and RFC 2890.
900#  The `me' device implements Minimal Encapsulation within IPv4 as
901#  specified in the RFC 2004.
902#  The XBONEHACK option allows the same pair of addresses to be configured on
903#  multiple gif interfaces.
904device		gif
905device		gre
906device		me
907options 	XBONEHACK
908
909#  The `stf' device implements 6to4 encapsulation.
910device		stf
911
912# The pf packet filter consists of three devices:
913#  The `pf' device provides /dev/pf and the firewall code itself.
914#  The `pflog' device provides the pflog0 interface which logs packets.
915#  The `pfsync' device provides the pfsync0 interface used for
916#   synchronization of firewall state tables (over the net).
917device		pf
918device		pflog
919device		pfsync
920
921# Bridge interface.
922device		if_bridge
923
924# Common Address Redundancy Protocol. See carp(4) for more details.
925device		carp
926
927# IPsec interface.
928device		enc
929
930# Link aggregation interface.
931device		lagg
932
933#
934# Internet family options:
935#
936# MROUTING enables the kernel multicast packet forwarder, which works
937# with mrouted and XORP.
938#
939# IPFIREWALL enables support for IP firewall construction, in
940# conjunction with the `ipfw' program.  IPFIREWALL_VERBOSE sends
941# logged packets to the system logger.  IPFIREWALL_VERBOSE_LIMIT
942# limits the number of times a matching entry can be logged.
943#
944# WARNING:  IPFIREWALL defaults to a policy of "deny ip from any to any"
945# and if you do not add other rules during startup to allow access,
946# YOU WILL LOCK YOURSELF OUT.  It is suggested that you set firewall_type=open
947# in /etc/rc.conf when first enabling this feature, then refining the
948# firewall rules in /etc/rc.firewall after you've tested that the new kernel
949# feature works properly.
950#
951# IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
952# allow everything.  Use with care, if a cracker can crash your
953# firewall machine, they can get to your protected machines.  However,
954# if you are using it as an as-needed filter for specific problems as
955# they arise, then this may be for you.  Changing the default to 'allow'
956# means that you won't get stuck if the kernel and /sbin/ipfw binary get
957# out of sync.
958#
959# IPDIVERT enables the divert IP sockets, used by ``ipfw divert''.  It
960# depends on IPFIREWALL if compiled into the kernel.
961#
962# IPFIREWALL_NAT adds support for in kernel nat in ipfw, and it requires
963# LIBALIAS.
964#
965# IPFIREWALL_NAT64 adds support for in kernel NAT64 in ipfw.
966#
967# IPFIREWALL_NPTV6 adds support for in kernel NPTv6 in ipfw.
968#
969# IPFIREWALL_PMOD adds support for protocols modification module. Currently
970# it supports only TCP MSS modification.
971#
972# IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
973# packets without touching the TTL).  This can be useful to hide firewalls
974# from traceroute and similar tools.
975#
976# PF_DEFAULT_TO_DROP causes the default pf(4) rule to deny everything.
977#
978# TCPDEBUG enables code which keeps traces of the TCP state machine
979# for sockets with the SO_DEBUG option set, which can then be examined
980# using the trpt(8) utility.
981#
982# TCPPCAP enables code which keeps the last n packets sent and received
983# on a TCP socket.
984#
985# TCP_BLACKBOX enables enhanced TCP event logging.
986#
987# TCP_HHOOK enables the hhook(9) framework hooks for the TCP stack.
988#
989# RADIX_MPATH provides support for equal-cost multi-path routing.
990#
991options 	MROUTING		# Multicast routing
992options 	IPFIREWALL		#firewall
993options 	IPFIREWALL_VERBOSE	#enable logging to syslogd(8)
994options 	IPFIREWALL_VERBOSE_LIMIT=100	#limit verbosity
995options 	IPFIREWALL_DEFAULT_TO_ACCEPT	#allow everything by default
996options 	IPFIREWALL_NAT		#ipfw kernel nat support
997options 	IPFIREWALL_NAT64	#ipfw kernel NAT64 support
998options 	IPFIREWALL_NPTV6	#ipfw kernel IPv6 NPT support
999options 	IPDIVERT		#divert sockets
1000options 	IPFILTER		#ipfilter support
1001options 	IPFILTER_LOG		#ipfilter logging
1002options 	IPFILTER_LOOKUP		#ipfilter pools
1003options 	IPFILTER_DEFAULT_BLOCK	#block all packets by default
1004options 	IPSTEALTH		#support for stealth forwarding
1005options 	PF_DEFAULT_TO_DROP	#drop everything by default
1006options 	TCPDEBUG
1007options 	TCPPCAP
1008options 	TCP_BLACKBOX
1009options 	TCP_HHOOK
1010options 	RADIX_MPATH
1011
1012# The MBUF_STRESS_TEST option enables options which create
1013# various random failures / extreme cases related to mbuf
1014# functions.  See mbuf(9) for a list of available test cases.
1015# MBUF_PROFILING enables code to profile the mbuf chains
1016# exiting the system (via participating interfaces) and
1017# return a logarithmic histogram of monitored parameters
1018# (e.g. packet size, wasted space, number of mbufs in chain).
1019options 	MBUF_STRESS_TEST
1020options 	MBUF_PROFILING
1021
1022# Statically link in accept filters
1023options 	ACCEPT_FILTER_DATA
1024options 	ACCEPT_FILTER_DNS
1025options 	ACCEPT_FILTER_HTTP
1026
1027# TCP_SIGNATURE adds support for RFC 2385 (TCP-MD5) digests. These are
1028# carried in TCP option 19. This option is commonly used to protect
1029# TCP sessions (e.g. BGP) where IPSEC is not available nor desirable.
1030# This is enabled on a per-socket basis using the TCP_MD5SIG socket option.
1031# This requires the use of 'device crypto' and either 'options IPSEC' or
1032# 'options IPSEC_SUPPORT'.
1033options 	TCP_SIGNATURE		#include support for RFC 2385
1034
1035# DUMMYNET enables the "dummynet" bandwidth limiter.  You need IPFIREWALL
1036# as well.  See dummynet(4) and ipfw(8) for more info.  When you run
1037# DUMMYNET it is advisable to also have at least "options HZ=1000" to achieve
1038# a smooth scheduling of the traffic.
1039options 	DUMMYNET
1040
1041# The DEBUGNET option enables a basic debug/panic-time networking API.  It
1042# is used by NETDUMP and NETGDB.
1043options 	DEBUGNET
1044
1045# The NETDUMP option enables netdump(4) client support in the kernel.
1046# This allows a panicking kernel to transmit a kernel dump to a remote host.
1047options 	NETDUMP
1048
1049# The NETGDB option enables netgdb(4) support in the kernel.  This allows a
1050# panicking kernel to be debugged as a GDB remote over the network.
1051options 	NETGDB
1052
1053#####################################################################
1054# FILESYSTEM OPTIONS
1055
1056#
1057# Only the root filesystem needs to be statically compiled or preloaded
1058# as module; everything else will be automatically loaded at mount
1059# time.  Some people still prefer to statically compile other
1060# filesystems as well.
1061#
1062# NB: The UNION filesystem was known to be buggy in the past.  It is now
1063# being actively maintained, although there are still some issues being
1064# resolved.
1065#
1066
1067# One of these is mandatory:
1068options 	FFS			#Fast filesystem
1069options 	NFSCL			#Network File System client
1070
1071# The rest are optional:
1072options 	AUTOFS			#Automounter filesystem
1073options 	CD9660			#ISO 9660 filesystem
1074options 	FDESCFS			#File descriptor filesystem
1075options 	FUSEFS			#FUSEFS support module
1076options 	MSDOSFS			#MS DOS File System (FAT, FAT32)
1077options 	NFSLOCKD		#Network Lock Manager
1078options 	NFSD			#Network Filesystem Server
1079options 	KGSSAPI			#Kernel GSSAPI implementation
1080
1081options 	NULLFS			#NULL filesystem
1082options 	PROCFS			#Process filesystem (requires PSEUDOFS)
1083options 	PSEUDOFS		#Pseudo-filesystem framework
1084options 	PSEUDOFS_TRACE		#Debugging support for PSEUDOFS
1085options 	SMBFS			#SMB/CIFS filesystem
1086options 	TMPFS			#Efficient memory filesystem
1087options 	UDF			#Universal Disk Format
1088options 	UNIONFS			#Union filesystem
1089# The xFS_ROOT options REQUIRE the associated ``options xFS''
1090options 	NFS_ROOT		#NFS usable as root device
1091
1092# Soft updates is a technique for improving filesystem speed and
1093# making abrupt shutdown less risky.
1094#
1095options 	SOFTUPDATES
1096
1097# Extended attributes allow additional data to be associated with files,
1098# and is used for ACLs, Capabilities, and MAC labels.
1099# See src/sys/ufs/ufs/README.extattr for more information.
1100options 	UFS_EXTATTR
1101options 	UFS_EXTATTR_AUTOSTART
1102
1103# Access Control List support for UFS filesystems.  The current ACL
1104# implementation requires extended attribute support, UFS_EXTATTR,
1105# for the underlying filesystem.
1106# See src/sys/ufs/ufs/README.acls for more information.
1107options 	UFS_ACL
1108
1109# Directory hashing improves the speed of operations on very large
1110# directories at the expense of some memory.
1111options 	UFS_DIRHASH
1112
1113# Gjournal-based UFS journaling support.
1114options 	UFS_GJOURNAL
1115
1116# Make space in the kernel for a root filesystem on a md device.
1117# Define to the number of kilobytes to reserve for the filesystem.
1118# This is now optional.
1119# If not defined, the root filesystem passed in as the MFS_IMAGE makeoption
1120# will be automatically embedded in the kernel during linking. Its exact size
1121# will be consumed within the kernel.
1122# If defined, the old way of embedding the filesystem in the kernel will be
1123# used. That is to say MD_ROOT_SIZE KB will be allocated in the kernel and
1124# later, the filesystem image passed in as the MFS_IMAGE makeoption will be
1125# dd'd into the reserved space if it fits.
1126options 	MD_ROOT_SIZE=10
1127
1128# Make the md device a potential root device, either with preloaded
1129# images of type mfs_root or md_root.
1130options 	MD_ROOT
1131
1132# Write-protect the md root device so that it may not be mounted writeable.
1133options 	MD_ROOT_READONLY
1134
1135# Allow to read MD image from external memory regions
1136options		MD_ROOT_MEM
1137
1138# Disk quotas are supported when this option is enabled.
1139options 	QUOTA			#enable disk quotas
1140
1141# If you are running a machine just as a fileserver for PC and MAC
1142# users, using SAMBA, you may consider setting this option
1143# and keeping all those users' directories on a filesystem that is
1144# mounted with the suiddir option. This gives new files the same
1145# ownership as the directory (similar to group). It's a security hole
1146# if you let these users run programs, so confine it to file-servers
1147# (but it'll save you lots of headaches in those cases). Root owned
1148# directories are exempt and X bits are cleared. The suid bit must be
1149# set on the directory as well; see chmod(1). PC owners can't see/set
1150# ownerships so they keep getting their toes trodden on. This saves
1151# you all the support calls as the filesystem it's used on will act as
1152# they expect: "It's my dir so it must be my file".
1153#
1154options 	SUIDDIR
1155
1156# NFS options:
1157options 	NFS_MINATTRTIMO=3	# VREG attrib cache timeout in sec
1158options 	NFS_MAXATTRTIMO=60
1159options 	NFS_MINDIRATTRTIMO=30	# VDIR attrib cache timeout in sec
1160options 	NFS_MAXDIRATTRTIMO=60
1161options 	NFS_DEBUG		# Enable NFS Debugging
1162
1163#
1164# Add support for the EXT2FS filesystem of Linux fame.  Be a bit
1165# careful with this - the ext2fs code has a tendency to lag behind
1166# changes and not be exercised very much, so mounting read/write could
1167# be dangerous (and even mounting read only could result in panics.)
1168#
1169options 	EXT2FS
1170
1171# The system memory devices; /dev/mem, /dev/kmem
1172device		mem
1173
1174# The kernel symbol table device; /dev/ksyms
1175device		ksyms
1176
1177# Optional character code conversion support with LIBICONV.
1178# Each option requires their base file system and LIBICONV.
1179options 	CD9660_ICONV
1180options 	MSDOSFS_ICONV
1181options 	UDF_ICONV
1182
1183
1184#####################################################################
1185# POSIX P1003.1B
1186
1187# Real time extensions added in the 1993 POSIX
1188# _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
1189
1190options 	_KPOSIX_PRIORITY_SCHEDULING
1191# p1003_1b_semaphores are very experimental,
1192# user should be ready to assist in debugging if problems arise.
1193options 	P1003_1B_SEMAPHORES
1194
1195# POSIX message queue
1196options 	P1003_1B_MQUEUE
1197
1198#####################################################################
1199# SECURITY POLICY PARAMETERS
1200
1201# Support for BSM audit
1202options 	AUDIT
1203
1204# Support for Mandatory Access Control (MAC):
1205options 	MAC
1206options 	MAC_BIBA
1207options 	MAC_BSDEXTENDED
1208options 	MAC_IFOFF
1209options 	MAC_LOMAC
1210options 	MAC_MLS
1211options 	MAC_NONE
1212options 	MAC_NTPD
1213options 	MAC_PARTITION
1214options 	MAC_PORTACL
1215options 	MAC_SEEOTHERUIDS
1216options 	MAC_STUB
1217options 	MAC_TEST
1218
1219# Support for Capsicum
1220options 	CAPABILITIES	# fine-grained rights on file descriptors
1221options 	CAPABILITY_MODE	# sandboxes with no global namespace access
1222
1223
1224#####################################################################
1225# CLOCK OPTIONS
1226
1227# The granularity of operation is controlled by the kernel option HZ whose
1228# default value (1000 on most architectures) means a granularity of 1ms
1229# (1s/HZ).  Historically, the default was 100, but finer granularity is
1230# required for DUMMYNET and other systems on modern hardware.  There are
1231# reasonable arguments that HZ should, in fact, be 100 still; consider,
1232# that reducing the granularity too much might cause excessive overhead in
1233# clock interrupt processing, potentially causing ticks to be missed and thus
1234# actually reducing the accuracy of operation.
1235
1236options 	HZ=100
1237
1238# Enable support for the kernel PLL to use an external PPS signal,
1239# under supervision of [x]ntpd(8)
1240# More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
1241
1242options 	PPS_SYNC
1243
1244# Enable support for generic feed-forward clocks in the kernel.
1245# The feed-forward clock support is an alternative to the feedback oriented
1246# ntpd/system clock approach, and is to be used with a feed-forward
1247# synchronization algorithm such as the RADclock:
1248# More info here: http://www.synclab.org/radclock
1249
1250options 	FFCLOCK
1251
1252
1253#####################################################################
1254# SCSI DEVICES
1255
1256# SCSI DEVICE CONFIGURATION
1257
1258# The SCSI subsystem consists of the `base' SCSI code, a number of
1259# high-level SCSI device `type' drivers, and the low-level host-adapter
1260# device drivers.  The host adapters are listed in the ISA and PCI
1261# device configuration sections below.
1262#
1263# It is possible to wire down your SCSI devices so that a given bus,
1264# target, and LUN always come on line as the same device unit.  In
1265# earlier versions the unit numbers were assigned in the order that
1266# the devices were probed on the SCSI bus.  This means that if you
1267# removed a disk drive, you may have had to rewrite your /etc/fstab
1268# file, and also that you had to be careful when adding a new disk
1269# as it may have been probed earlier and moved your device configuration
1270# around.
1271
1272# This old behavior is maintained as the default behavior.  The unit
1273# assignment begins with the first non-wired down unit for a device
1274# type.  For example, if you wire a disk as "da3" then the first
1275# non-wired disk will be assigned da4.
1276
1277# The syntax for wiring down devices is:
1278
1279hint.scbus.0.at="ahc0"
1280hint.scbus.1.at="ahc1"
1281hint.scbus.1.bus="0"
1282hint.scbus.3.at="ahc2"
1283hint.scbus.3.bus="0"
1284hint.scbus.2.at="ahc2"
1285hint.scbus.2.bus="1"
1286hint.da.0.at="scbus0"
1287hint.da.0.target="0"
1288hint.da.0.unit="0"
1289hint.da.1.at="scbus3"
1290hint.da.1.target="1"
1291hint.da.2.at="scbus2"
1292hint.da.2.target="3"
1293hint.sa.1.at="scbus1"
1294hint.sa.1.target="6"
1295
1296# "units" (SCSI logical unit number) that are not specified are
1297# treated as if specified as LUN 0.
1298
1299# All SCSI devices allocate as many units as are required.
1300
1301# The ch driver drives SCSI Media Changer ("jukebox") devices.
1302#
1303# The da driver drives SCSI Direct Access ("disk") and Optical Media
1304# ("WORM") devices.
1305#
1306# The sa driver drives SCSI Sequential Access ("tape") devices.
1307#
1308# The cd driver drives SCSI Read Only Direct Access ("cd") devices.
1309#
1310# The ses driver drives SCSI Environment Services ("ses") and
1311# SAF-TE ("SCSI Accessible Fault-Tolerant Enclosure") devices.
1312#
1313# The pt driver drives SCSI Processor devices.
1314#
1315# The sg driver provides a passthrough API that is compatible with the
1316# Linux SG driver.  It will work in conjunction with the COMPAT_LINUX
1317# option to run linux SG apps.  It can also stand on its own and provide
1318# source level API compatibility for porting apps to FreeBSD.
1319#
1320# Target Mode support is provided here but also requires that a SIM
1321# (SCSI Host Adapter Driver) provide support as well.
1322#
1323# The targ driver provides target mode support as a Processor type device.
1324# It exists to give the minimal context necessary to respond to Inquiry
1325# commands. There is a sample user application that shows how the rest
1326# of the command support might be done in /usr/share/examples/scsi_target.
1327#
1328# The targbh driver provides target mode support and exists to respond
1329# to incoming commands that do not otherwise have a logical unit assigned
1330# to them.
1331#
1332# The pass driver provides a passthrough API to access the CAM subsystem.
1333
1334device		scbus		#base SCSI code
1335device		ch		#SCSI media changers
1336device		da		#SCSI direct access devices (aka disks)
1337device		sa		#SCSI tapes
1338device		cd		#SCSI CD-ROMs
1339device		ses		#Enclosure Services (SES and SAF-TE)
1340device		pt		#SCSI processor
1341device		targ		#SCSI Target Mode Code
1342device		targbh		#SCSI Target Mode Blackhole Device
1343device		pass		#CAM passthrough driver
1344device		sg		#Linux SCSI passthrough
1345device		ctl		#CAM Target Layer
1346
1347# CAM OPTIONS:
1348# debugging options:
1349# CAMDEBUG		Compile in all possible debugging.
1350# CAM_DEBUG_COMPILE	Debug levels to compile in.
1351# CAM_DEBUG_FLAGS	Debug levels to enable on boot.
1352# CAM_DEBUG_BUS		Limit debugging to the given bus.
1353# CAM_DEBUG_TARGET	Limit debugging to the given target.
1354# CAM_DEBUG_LUN		Limit debugging to the given lun.
1355# CAM_DEBUG_DELAY	Delay in us after printing each debug line.
1356# CAM_IO_STATS		Publish additional CAM device statics by sysctl
1357#
1358# CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
1359# SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
1360# SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
1361# SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
1362#             queue after a bus reset, and the number of milliseconds to
1363#             freeze the device queue after a bus device reset.  This
1364#             can be changed at boot and runtime with the
1365#             kern.cam.scsi_delay tunable/sysctl.
1366options 	CAMDEBUG
1367options 	CAM_DEBUG_COMPILE=-1
1368options 	CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO|CAM_DEBUG_PROBE|CAM_DEBUG_PERIPH)
1369options 	CAM_DEBUG_BUS=-1
1370options 	CAM_DEBUG_TARGET=-1
1371options 	CAM_DEBUG_LUN=-1
1372options 	CAM_DEBUG_DELAY=1
1373options 	CAM_MAX_HIGHPOWER=4
1374options 	SCSI_NO_SENSE_STRINGS
1375options 	SCSI_NO_OP_STRINGS
1376options 	SCSI_DELAY=5000	# Be pessimistic about Joe SCSI device
1377options 	CAM_IOSCHED_DYNAMIC
1378options		CAM_IO_STATS
1379options		CAM_TEST_FAILURE
1380
1381# Options for the CAM CDROM driver:
1382# CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
1383# CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
1384#                           enforced if there is I/O waiting for another LUN
1385# The compiled in defaults for these variables are 2 and 10 seconds,
1386# respectively.
1387#
1388# These can also be changed on the fly with the following sysctl variables:
1389# kern.cam.cd.changer.min_busy_seconds
1390# kern.cam.cd.changer.max_busy_seconds
1391#
1392options 	CHANGER_MIN_BUSY_SECONDS=2
1393options 	CHANGER_MAX_BUSY_SECONDS=10
1394
1395# Options for the CAM sequential access driver:
1396# SA_IO_TIMEOUT: Timeout for read/write/wfm  operations, in minutes
1397# SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
1398# SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
1399# SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
1400# SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
1401options 	SA_IO_TIMEOUT=4
1402options 	SA_SPACE_TIMEOUT=60
1403options 	SA_REWIND_TIMEOUT=(2*60)
1404options 	SA_ERASE_TIMEOUT=(4*60)
1405options 	SA_1FM_AT_EOD
1406
1407# Optional timeout for the CAM processor target (pt) device
1408# This is specified in seconds.  The default is 60 seconds.
1409options 	SCSI_PT_DEFAULT_TIMEOUT=60
1410
1411# Optional enable of doing SES passthrough on other devices (e.g., disks)
1412#
1413# Normally disabled because a lot of newer SCSI disks report themselves
1414# as having SES capabilities, but this can then clot up attempts to build
1415# a topology with the SES device that's on the box these drives are in....
1416options 	SES_ENABLE_PASSTHROUGH
1417
1418
1419#####################################################################
1420# MISCELLANEOUS DEVICES AND OPTIONS
1421
1422device		pty		#BSD-style compatibility pseudo ttys
1423device		nmdm		#back-to-back tty devices
1424device		md		#Memory/malloc disk
1425device		snp		#Snoop device - to look at pty/vty/etc..
1426device		ccd		#Concatenated disk driver
1427device		firmware	#firmware(9) support
1428
1429# Kernel side iconv library
1430options 	LIBICONV
1431
1432# Size of the kernel message buffer.  Should be N * pagesize.
1433options 	MSGBUF_SIZE=40960
1434
1435
1436#####################################################################
1437# HARDWARE BUS CONFIGURATION
1438
1439#
1440# PCI bus & PCI options:
1441#
1442device		pci
1443options 	PCI_HP			# PCI-Express native HotPlug
1444options 	PCI_IOV			# PCI SR-IOV support
1445
1446
1447#####################################################################
1448# HARDWARE DEVICE CONFIGURATION
1449
1450# For ISA the required hints are listed.
1451# PCI, CardBus, SD/MMC and pccard are self identifying buses, so
1452# no hints are needed.
1453
1454#
1455# Mandatory devices:
1456#
1457
1458# These options are valid for other keyboard drivers as well.
1459options 	KBD_DISABLE_KEYMAP_LOAD	# refuse to load a keymap
1460options 	KBD_INSTALL_CDEV	# install a CDEV entry in /dev
1461
1462device		kbdmux			# keyboard multiplexer
1463options		KBDMUX_DFLT_KEYMAP	# specify the built-in keymap
1464makeoptions	KBDMUX_DFLT_KEYMAP=it.iso
1465
1466options 	FB_DEBUG		# Frame buffer debugging
1467
1468# Enable experimental features of the syscons terminal emulator (teken).
1469options 	TEKEN_CONS25		# cons25-style terminal emulation
1470options 	TEKEN_UTF8		# UTF-8 output handling
1471
1472# The vt video console driver.
1473device		vt
1474options		VT_ALT_TO_ESC_HACK=1	# Prepend ESC sequence to ALT keys
1475options		VT_MAXWINDOWS=16	# Number of virtual consoles
1476options		VT_TWOBUTTON_MOUSE	# Use right mouse button to paste
1477
1478# The following options set the default framebuffer size.
1479options		VT_FB_DEFAULT_HEIGHT=480
1480options		VT_FB_DEFAULT_WIDTH=640
1481
1482# The following options will let you change the default vt terminal colors.
1483options		TERMINAL_NORM_ATTR=(FG_GREEN|BG_BLACK)
1484options		TERMINAL_KERN_ATTR=(FG_LIGHTRED|BG_BLACK)
1485
1486#
1487# Optional devices:
1488#
1489
1490#
1491# SCSI host adapters:
1492#
1493# aacraid: Adaptec by PMC RAID controllers, Series 6/7/8 and upcoming
1494#          families. Container interface, CAM required.
1495# ahc: Adaptec 274x/284x/2910/293x/294x/394x/3950x/3960x/398X/4944/
1496#      19160x/29160x, aic7770/aic78xx
1497# ahd: Adaptec 29320/39320 Controllers.
1498# esp: Emulex ESP, NCR 53C9x and QLogic FAS families based controllers
1499#      including the AMD Am53C974 (found on devices such as the Tekram
1500#      DC-390(T)) and the Sun ESP and FAS families of controllers
1501# isp: Qlogic ISP 1020, 1040 and 1040B PCI SCSI host adapters,
1502#      ISP 1240 Dual Ultra SCSI, ISP 1080 and 1280 (Dual) Ultra2,
1503#      ISP 12160 Ultra3 SCSI,
1504#      Qlogic ISP 2100 and ISP 2200 1Gb Fibre Channel host adapters.
1505#      Qlogic ISP 2300 and ISP 2312 2Gb Fibre Channel host adapters.
1506#      Qlogic ISP 2322 and ISP 6322 2Gb Fibre Channel host adapters.
1507# ispfw: Firmware module for Qlogic host adapters
1508# mpr: LSI-Logic MPT/Fusion Gen 3
1509# mps: LSI-Logic MPT/Fusion Gen 2
1510# mpt: LSI-Logic MPT/Fusion 53c1020 or 53c1030 Ultra4
1511#      or FC9x9 Fibre Channel host adapters.
1512# sym: Symbios/Logic 53C8XX family of PCI-SCSI I/O processors:
1513#      53C810, 53C810A, 53C815, 53C825,  53C825A, 53C860, 53C875,
1514#      53C876, 53C885,  53C895, 53C895A, 53C896,  53C897, 53C1510D,
1515#      53C1010-33, 53C1010-66.
1516
1517device		aacraid
1518device		ahc
1519device		ahd
1520device		esp
1521device		iscsi_initiator
1522device		isp
1523hint.isp.0.disable="1"
1524hint.isp.0.role="3"
1525hint.isp.0.prefer_iomap="1"
1526hint.isp.0.prefer_memmap="1"
1527hint.isp.0.fwload_disable="1"
1528hint.isp.0.ignore_nvram="1"
1529hint.isp.0.fullduplex="1"
1530hint.isp.0.topology="lport"
1531hint.isp.0.topology="nport"
1532hint.isp.0.topology="lport-only"
1533hint.isp.0.topology="nport-only"
1534# we can't get u_int64_t types, nor can we get strings if it's got
1535# a leading 0x, hence this silly dodge.
1536hint.isp.0.portwnn="w50000000aaaa0000"
1537hint.isp.0.nodewnn="w50000000aaaa0001"
1538device		ispfw
1539device		mpr			# LSI-Logic MPT-Fusion 3
1540device		mps			# LSI-Logic MPT-Fusion 2
1541device		mpt			# LSI-Logic MPT-Fusion
1542device		sym
1543
1544# The aic7xxx driver will attempt to use memory mapped I/O for all PCI
1545# controllers that have it configured only if this option is set. Unfortunately,
1546# this doesn't work on some motherboards, which prevents it from being the
1547# default.
1548options 	AHC_ALLOW_MEMIO
1549
1550# Dump the contents of the ahc controller configuration PROM.
1551options 	AHC_DUMP_EEPROM
1552
1553# Bitmap of units to enable targetmode operations.
1554options 	AHC_TMODE_ENABLE
1555
1556# Compile in Aic7xxx Debugging code.
1557options 	AHC_DEBUG
1558
1559# Aic7xxx driver debugging options. See sys/dev/aic7xxx/aic7xxx.h
1560options 	AHC_DEBUG_OPTS
1561
1562# Print register bitfields in debug output.  Adds ~128k to driver
1563# See ahc(4).
1564options 	AHC_REG_PRETTY_PRINT
1565
1566# Compile in aic79xx debugging code.
1567options 	AHD_DEBUG
1568
1569# Aic79xx driver debugging options.  Adds ~215k to driver.  See ahd(4).
1570options 	AHD_DEBUG_OPTS=0xFFFFFFFF
1571
1572# Print human-readable register definitions when debugging
1573options 	AHD_REG_PRETTY_PRINT
1574
1575# Bitmap of units to enable targetmode operations.
1576options 	AHD_TMODE_ENABLE
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 	SYM_SETUP_SCSI_DIFF	#-HVD support for 825a, 875, 885
1599					# disabled:0 (default), enabled:1
1600#options 	SYM_SETUP_PCI_PARITY	#-PCI parity checking
1601					# disabled:0, enabled:1 (default)
1602#options 	SYM_SETUP_MAX_LUN	#-Number of LUNs supported
1603					# default:8, range:[1..64]
1604
1605#
1606# Compaq "CISS" RAID controllers (SmartRAID 5* series)
1607# These controllers have a SCSI-like interface, and require the
1608# CAM infrastructure.
1609#
1610device		ciss
1611
1612#
1613# Intel Integrated RAID controllers.
1614# This driver was developed and is maintained by Intel.  Contacts
1615# at Intel for this driver are
1616# "Kannanthanam, Boji T" <boji.t.kannanthanam@intel.com> and
1617# "Leubner, Achim" <achim.leubner@intel.com>.
1618#
1619device		iir
1620
1621#
1622# Mylex AcceleRAID and eXtremeRAID controllers with v6 and later
1623# firmware.  These controllers have a SCSI-like interface, and require
1624# the CAM infrastructure.
1625#
1626device		mly
1627
1628#
1629# Compaq Smart RAID, Mylex DAC960 and AMI MegaRAID controllers.  Only
1630# one entry is needed; the code will find and configure all supported
1631# controllers.
1632#
1633device		ida		# Compaq Smart RAID
1634device		mlx		# Mylex DAC960
1635device		amr		# AMI MegaRAID
1636device		amrp		# SCSI Passthrough interface (optional, CAM req.)
1637device		mfi		# LSI MegaRAID SAS
1638device		mfip		# LSI MegaRAID SAS passthrough, requires CAM
1639options 	MFI_DEBUG
1640device		mrsas		# LSI/Avago MegaRAID SAS/SATA, 6Gb/s and 12Gb/s
1641
1642#
1643# 3ware ATA RAID
1644#
1645device		twe		# 3ware ATA RAID
1646
1647#
1648# Serial ATA host controllers:
1649#
1650# ahci: Advanced Host Controller Interface (AHCI) compatible
1651# mvs:  Marvell 88SX50XX/88SX60XX/88SX70XX/SoC controllers
1652# siis: SiliconImage SiI3124/SiI3132/SiI3531 controllers
1653#
1654# These drivers are part of cam(4) subsystem. They supersede less featured
1655# ata(4) subsystem drivers, supporting same hardware.
1656
1657device		ahci
1658device		mvs
1659device		siis
1660
1661#
1662# The 'ATA' driver supports all legacy ATA/ATAPI controllers, including
1663# PC Card devices. You only need one "device ata" for it to find all
1664# PCI and PC Card ATA/ATAPI devices on modern machines.
1665# Alternatively, individual bus and chipset drivers may be chosen by using
1666# the 'atacore' driver then selecting the drivers on a per vendor basis.
1667# For example to build a system which only supports a VIA chipset,
1668# omit 'ata' and include the 'atacore', 'atapci' and 'atavia' drivers.
1669device		ata
1670
1671# Modular ATA
1672#device		atacore		# Core ATA functionality
1673#device		atapccard	# CARDBUS support
1674#device		ataisa		# ISA bus support
1675#device		atapci		# PCI bus support; only generic chipset support
1676
1677# PCI ATA chipsets
1678#device		ataacard	# ACARD
1679#device		ataacerlabs	# Acer Labs Inc. (ALI)
1680#device		ataamd		# American Micro Devices (AMD)
1681#device		ataati		# ATI
1682#device		atacenatek	# Cenatek
1683#device		atacypress	# Cypress
1684#device		atacyrix	# Cyrix
1685#device		atahighpoint	# HighPoint
1686#device		ataintel	# Intel
1687#device		ataite		# Integrated Technology Inc. (ITE)
1688#device		atajmicron	# JMicron
1689#device		atamarvell	# Marvell
1690#device		atamicron	# Micron
1691#device		atanational	# National
1692#device		atanetcell	# NetCell
1693#device		atanvidia	# nVidia
1694#device		atapromise	# Promise
1695#device		ataserverworks	# ServerWorks
1696#device		atasiliconimage	# Silicon Image Inc. (SiI) (formerly CMD)
1697#device		atasis		# Silicon Integrated Systems Corp.(SiS)
1698#device		atavia		# VIA Technologies Inc.
1699
1700#
1701# For older non-PCI, non-PnPBIOS systems, these are the hints lines to add:
1702hint.ata.0.at="isa"
1703hint.ata.0.port="0x1f0"
1704hint.ata.0.irq="14"
1705hint.ata.1.at="isa"
1706hint.ata.1.port="0x170"
1707hint.ata.1.irq="15"
1708
1709#
1710# uart: newbusified driver for serial interfaces.  It consolidates the sio(4),
1711#	sab(4) and zs(4) drivers.
1712#
1713device		uart
1714
1715# Options for uart(4)
1716options 	UART_PPS_ON_CTS		# Do time pulse capturing using CTS
1717					# instead of DCD.
1718options 	UART_POLL_FREQ		# Set polling rate, used when hw has
1719					# no interrupt support (50 Hz default).
1720
1721# The following hint should only be used for pure ISA devices.  It is not
1722# needed otherwise.  Use of hints is strongly discouraged.
1723hint.uart.0.at="isa"
1724
1725# The following 3 hints are used when the UART is a system device (i.e., a
1726# console or debug port), but only on platforms that don't have any other
1727# means to pass the information to the kernel.  The unit number of the hint
1728# is only used to bundle the hints together.  There is no relation to the
1729# unit number of the probed UART.
1730hint.uart.0.port="0x3f8"
1731hint.uart.0.flags="0x10"
1732hint.uart.0.baud="115200"
1733
1734# `flags' for serial drivers that support consoles like sio(4) and uart(4):
1735#	0x10	enable console support for this unit.  Other console flags
1736#		(if applicable) are ignored unless this is set.  Enabling
1737#		console support does not make the unit the preferred console.
1738#		Boot with -h or set boot_serial=YES in the loader.  For sio(4)
1739#		specifically, the 0x20 flag can also be set (see above).
1740#		Currently, at most one unit can have console support; the
1741#		first one (in config file order) with this flag set is
1742#		preferred.  Setting this flag for sio0 gives the old behavior.
1743#	0x80	use this port for serial line gdb support in ddb.  Also known
1744#		as debug port.
1745#
1746
1747# Options for serial drivers that support consoles:
1748options 	BREAK_TO_DEBUGGER	# A BREAK/DBG on the console goes to
1749					# ddb, if available.
1750
1751# Solaris implements a new BREAK which is initiated by a character
1752# sequence CR ~ ^b which is similar to a familiar pattern used on
1753# Sun servers by the Remote Console.  There are FreeBSD extensions:
1754# CR ~ ^p requests force panic and CR ~ ^r requests a clean reboot.
1755options 	ALT_BREAK_TO_DEBUGGER
1756
1757# Serial Communications Controller
1758# Supports the Siemens SAB 82532 and Zilog Z8530 multi-channel
1759# communications controllers.
1760device		scc
1761
1762# PCI Universal Communications driver
1763# Supports various multi port PCI I/O cards.
1764device		puc
1765
1766#
1767# Network interfaces:
1768#
1769# MII bus support is required for many PCI Ethernet NICs,
1770# namely those which use MII-compliant transceivers or implement
1771# transceiver control interfaces that operate like an MII.  Adding
1772# "device miibus" to the kernel config pulls in support for the generic
1773# miibus API, the common support for for bit-bang'ing the MII and all
1774# of the PHY drivers, including a generic one for PHYs that aren't
1775# specifically handled by an individual driver.  Support for specific
1776# PHYs may be built by adding "device mii", "device mii_bitbang" if
1777# needed by the NIC driver and then adding the appropriate PHY driver.
1778device  	mii		# Minimal MII support
1779device  	mii_bitbang	# Common module for bit-bang'ing the MII
1780device  	miibus		# MII support w/ bit-bang'ing and all PHYs
1781
1782device  	acphy		# Altima Communications AC101
1783device  	amphy		# AMD AM79c873 / Davicom DM910{1,2}
1784device  	atphy		# Attansic/Atheros F1
1785device  	axphy		# Asix Semiconductor AX88x9x
1786device  	bmtphy		# Broadcom BCM5201/BCM5202 and 3Com 3c905C
1787device		bnxt		# Broadcom NetXtreme-C/NetXtreme-E
1788device  	brgphy		# Broadcom BCM54xx/57xx 1000baseTX
1789device  	ciphy		# Cicada/Vitesse CS/VSC8xxx
1790device  	e1000phy	# Marvell 88E1000 1000/100/10-BT
1791device  	gentbi		# Generic 10-bit 1000BASE-{LX,SX} fiber ifaces
1792device  	icsphy		# ICS ICS1889-1893
1793device  	ip1000phy	# IC Plus IP1000A/IP1001
1794device  	jmphy		# JMicron JMP211/JMP202
1795device  	lxtphy		# Level One LXT-970
1796device  	mlphy		# Micro Linear 6692
1797device  	nsgphy		# NatSemi DP8361/DP83865/DP83891
1798device  	nsphy		# NatSemi DP83840A
1799device  	nsphyter	# NatSemi DP83843/DP83815
1800device  	pnaphy		# HomePNA
1801device  	qsphy		# Quality Semiconductor QS6612
1802device  	rdcphy		# RDC Semiconductor R6040
1803device  	rgephy		# RealTek 8169S/8110S/8211B/8211C
1804device  	rlphy		# RealTek 8139
1805device  	rlswitch	# RealTek 8305
1806device  	smcphy		# SMSC LAN91C111
1807device  	tdkphy		# TDK 89Q2120
1808device  	tlphy		# Texas Instruments ThunderLAN
1809device  	truephy		# LSI TruePHY
1810device		xmphy		# XaQti XMAC II
1811
1812# an:   Aironet 4500/4800 802.11 wireless adapters. Supports the PCMCIA,
1813#       PCI and ISA varieties.
1814# ae:   Support for gigabit ethernet adapters based on the Attansic/Atheros
1815#       L2 PCI-Express FastEthernet controllers.
1816# age:  Support for gigabit ethernet adapters based on the Attansic/Atheros
1817#       L1 PCI express gigabit ethernet controllers.
1818# alc:  Support for Atheros AR8131/AR8132 PCIe ethernet controllers.
1819# ale:  Support for Atheros AR8121/AR8113/AR8114 PCIe ethernet controllers.
1820# ath:  Atheros a/b/g WiFi adapters (requires ath_hal and wlan)
1821# bce:	Broadcom NetXtreme II (BCM5706/BCM5708) PCI/PCIe Gigabit Ethernet
1822#       adapters.
1823# bfe:	Broadcom BCM4401 Ethernet adapter.
1824# bge:	Support for gigabit ethernet adapters based on the Broadcom
1825#	BCM570x family of controllers, including the 3Com 3c996-T,
1826#	the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41, and
1827#	the embedded gigE NICs on Dell PowerEdge 2550 servers.
1828# bnxt:	Broadcom NetXtreme-C and NetXtreme-E PCIe 10/25/50G Ethernet adapters.
1829# bxe:	Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet
1830#       adapters.
1831# bwi:	Broadcom BCM430* and BCM431* family of wireless adapters.
1832# bwn:	Broadcom BCM43xx family of wireless adapters.
1833# cas:	Sun Cassini/Cassini+ and National Semiconductor DP83065 Saturn
1834# cxgb: Chelsio T3 based 1GbE/10GbE PCIe Ethernet adapters.
1835# cxgbe:Chelsio T4, T5, and T6-based 1/10/25/40/100GbE PCIe Ethernet
1836#	adapters.
1837# cxgbev: Chelsio T4, T5, and T6-based PCIe Virtual Functions.
1838# dc:   Support for PCI fast ethernet adapters based on the DEC/Intel 21143
1839#       and various workalikes including:
1840#       the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
1841#       AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
1842#       82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
1843#       and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
1844#       replaces the old al, ax, dm, pn and mx drivers.  List of brands:
1845#       Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110,
1846#       SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX,
1847#       LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
1848#       KNE110TX.
1849# em:   Intel Pro/1000 Gigabit Ethernet 82542, 82543, 82544 based adapters.
1850# fxp:  Intel EtherExpress Pro/100B
1851#	(hint of prefer_iomap can be done to prefer I/O instead of Mem mapping)
1852# gem:  Apple GMAC/Sun ERI/Sun GEM
1853# hme:  Sun HME (Happy Meal Ethernet)
1854# jme:  JMicron JMC260 Fast Ethernet/JMC250 Gigabit Ethernet based adapters.
1855# le:   AMD Am7900 LANCE and Am79C9xx PCnet
1856# lge:	Support for PCI gigabit ethernet adapters based on the Level 1
1857#	LXT1001 NetCellerator chipset. This includes the D-Link DGE-500SX,
1858#	SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
1859# lio:  Support for Cavium 23XX Ethernet adapters
1860# malo: Marvell Libertas wireless NICs.
1861# mwl:  Marvell 88W8363 802.11n wireless NICs.
1862#	Requires the mwl firmware module
1863# mwlfw: Marvell 88W8363 firmware
1864# msk:	Support for gigabit ethernet adapters based on the Marvell/SysKonnect
1865#	Yukon II Gigabit controllers, including 88E8021, 88E8022, 88E8061,
1866#	88E8062, 88E8035, 88E8036, 88E8038, 88E8050, 88E8052, 88E8053,
1867#	88E8055, 88E8056 and D-Link 560T/550SX.
1868# mlxfw: Mellanox firmware update module.
1869# mlx5:	Mellanox ConnectX-4 and ConnectX-4 LX IB and Eth shared code module.
1870# mlx5en:Mellanox ConnectX-4 and ConnectX-4 LX PCIe Ethernet adapters.
1871# my:	Myson Fast Ethernet (MTD80X, MTD89X)
1872# nge:	Support for PCI gigabit ethernet adapters based on the National
1873#	Semiconductor DP83820 and DP83821 chipset. This includes the
1874#	SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante FriendlyNet
1875#	GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the Surecom
1876#	EP-320G-TX and the Netgear GA622T.
1877# oce:	Emulex 10 Gbit adapters (OneConnect Ethernet)
1878# ral:	Ralink Technology IEEE 802.11 wireless adapter
1879# re:   RealTek 8139C+/8169/816xS/811xS/8101E PCI/PCIe Ethernet adapter
1880# rl:   Support for PCI fast ethernet adapters based on the RealTek 8129/8139
1881#       chipset.  Note that the RealTek driver defaults to using programmed
1882#       I/O to do register accesses because memory mapped mode seems to cause
1883#       severe lockups on SMP hardware.  This driver also supports the
1884#       Accton EN1207D `Cheetah' adapter, which uses a chip called
1885#       the MPX 5030/5038, which is either a RealTek in disguise or a
1886#       RealTek workalike.  Note that the D-Link DFE-530TX+ uses the RealTek
1887#       chipset and is supported by this driver, not the 'vr' driver.
1888# rtwn: RealTek wireless adapters.
1889# rtwnfw: RealTek wireless firmware.
1890# sge:  Silicon Integrated Systems SiS190/191 Fast/Gigabit Ethernet adapter
1891# sis:  Support for NICs based on the Silicon Integrated Systems SiS 900,
1892#       SiS 7016 and NS DP83815 PCI fast ethernet controller chips.
1893# sk:   Support for the SysKonnect SK-984x series PCI gigabit ethernet NICs.
1894#       This includes the SK-9841 and SK-9842 single port cards (single mode
1895#       and multimode fiber) and the SK-9843 and SK-9844 dual port cards
1896#       (also single mode and multimode).
1897#       The driver will autodetect the number of ports on the card and
1898#       attach each one as a separate network interface.
1899# ste:  Sundance Technologies ST201 PCI fast ethernet controller, includes
1900#       the D-Link DFE-550TX.
1901# stge: Support for gigabit ethernet adapters based on the Sundance/Tamarack
1902#       TC9021 family of controllers, including the Sundance ST2021/ST2023,
1903#       the Sundance/Tamarack TC9021, the D-Link DL-4000 and ASUS NX1101.
1904# ti:   Support for PCI gigabit ethernet NICs based on the Alteon Networks
1905#       Tigon 1 and Tigon 2 chipsets.  This includes the Alteon AceNIC, the
1906#       3Com 3c985, the Netgear GA620 and various others.  Note that you will
1907#       probably want to bump up kern.ipc.nmbclusters a lot to use this driver.
1908# vr:   Support for various fast ethernet adapters based on the VIA
1909#       Technologies VT3043 `Rhine I' and VT86C100A `Rhine II' chips,
1910#       including the D-Link DFE520TX and D-Link DFE530TX (see 'rl' for
1911#       DFE530TX+), the Hawking Technologies PN102TX, and the AOpen/Acer ALN-320.
1912# vte:  DM&P Vortex86 RDC R6040 Fast Ethernet
1913# wi:   Lucent WaveLAN/IEEE 802.11 PCMCIA adapters. Note: this supports both
1914#       the PCMCIA and ISA cards: the ISA card is really a PCMCIA to ISA
1915#       bridge with a PCMCIA adapter plugged into it.
1916# xl:   Support for the 3Com 3c900, 3c905, 3c905B and 3c905C (Fast)
1917#       Etherlink XL cards and integrated controllers.  This includes the
1918#       integrated 3c905B-TX chips in certain Dell Optiplex and Dell
1919#       Precision desktop machines and the integrated 3c905-TX chips
1920#       in Dell Latitude laptop docking stations.
1921#       Also supported: 3Com 3c980(C)-TX, 3Com 3cSOHO100-TX, 3Com 3c450-TX
1922
1923# Order for ISA devices is important here
1924
1925device		an
1926device		wi
1927
1928# PCI Ethernet NICs that use the common MII bus controller code.
1929device		ae		# Attansic/Atheros L2 FastEthernet
1930device		age		# Attansic/Atheros L1 Gigabit Ethernet
1931device		alc		# Atheros AR8131/AR8132 Ethernet
1932device		ale		# Atheros AR8121/AR8113/AR8114 Ethernet
1933device		bce		# Broadcom BCM5706/BCM5708 Gigabit Ethernet
1934device		bfe		# Broadcom BCM440x 10/100 Ethernet
1935device		bge		# Broadcom BCM570xx Gigabit Ethernet
1936device		cas		# Sun Cassini/Cassini+ and NS DP83065 Saturn
1937device		dc		# DEC/Intel 21143 and various workalikes
1938device		et		# Agere ET1310 10/100/Gigabit Ethernet
1939device		fxp		# Intel EtherExpress PRO/100B (82557, 82558)
1940hint.fxp.0.prefer_iomap="0"
1941device		gem		# Apple GMAC/Sun ERI/Sun GEM
1942device		hme		# Sun HME (Happy Meal Ethernet)
1943device		jme		# JMicron JMC250 Gigabit/JMC260 Fast Ethernet
1944device		lge		# Level 1 LXT1001 gigabit Ethernet
1945device		mlxfw		# Mellanox firmware update module
1946device		mlx5		# Shared code module between IB and Ethernet
1947device		mlx5en		# Mellanox ConnectX-4 and ConnectX-4 LX
1948device		msk		# Marvell/SysKonnect Yukon II Gigabit Ethernet
1949device		my		# Myson Fast Ethernet (MTD80X, MTD89X)
1950device		nge		# NatSemi DP83820 gigabit Ethernet
1951device		re		# RealTek 8139C+/8169/8169S/8110S
1952device		rl		# RealTek 8129/8139
1953device		sge		# Silicon Integrated Systems SiS190/191
1954device		sis		# Silicon Integrated Systems SiS 900/SiS 7016
1955device		sk		# SysKonnect SK-984x & SK-982x gigabit Ethernet
1956device		ste		# Sundance ST201 (D-Link DFE-550TX)
1957device		stge		# Sundance/Tamarack TC9021 gigabit Ethernet
1958device		vr		# VIA Rhine, Rhine II
1959device		vte		# DM&P Vortex86 RDC R6040 Fast Ethernet
1960device		xl		# 3Com 3c90x (``Boomerang'', ``Cyclone'')
1961
1962# PCI/PCI-X/PCIe Ethernet NICs that use iflib infrastructure
1963device		iflib
1964device		em		# Intel Pro/1000 Gigabit Ethernet
1965device		ix		# Intel Pro/10Gbe PCIE Ethernet
1966device		ixv		# Intel Pro/10Gbe PCIE Ethernet VF
1967
1968# PCI Ethernet NICs.
1969device		cxgb		# Chelsio T3 10 Gigabit Ethernet
1970device		cxgb_t3fw	# Chelsio T3 10 Gigabit Ethernet firmware
1971device		cxgbe		# Chelsio T4-T6 1/10/25/40/100 Gigabit Ethernet
1972device		cxgbev		# Chelsio T4-T6 Virtual Functions
1973device		le		# AMD Am7900 LANCE and Am79C9xx PCnet
1974device		mxge		# Myricom Myri-10G 10GbE NIC
1975device		oce		# Emulex 10 GbE (OneConnect Ethernet)
1976device		ti		# Alteon Networks Tigon I/II gigabit Ethernet
1977
1978# PCI IEEE 802.11 Wireless NICs
1979device		ath		# Atheros pci/cardbus NIC's
1980device		ath_hal		# pci/cardbus chip support
1981#device		ath_ar5210	# AR5210 chips
1982#device		ath_ar5211	# AR5211 chips
1983#device		ath_ar5212	# AR5212 chips
1984#device		ath_rf2413
1985#device		ath_rf2417
1986#device		ath_rf2425
1987#device		ath_rf5111
1988#device		ath_rf5112
1989#device		ath_rf5413
1990#device		ath_ar5416	# AR5416 chips
1991# All of the AR5212 parts have a problem when paired with the AR71xx
1992# CPUS.  These parts have a bug that triggers a fatal bus error on the AR71xx
1993# only.  Details of the exact nature of the bug are sketchy, but some can be
1994# found at https://forum.openwrt.org/viewtopic.php?pid=70060 on pages 4, 5 and
1995# 6.  This option enables this workaround.  There is a performance penalty
1996# for this work around, but without it things don't work at all.  The DMA
1997# from the card usually bursts 128 bytes, but on the affected CPUs, only
1998# 4 are safe.
1999options	   	AH_RXCFG_SDMAMW_4BYTES
2000#device		ath_ar9160	# AR9160 chips
2001#device		ath_ar9280	# AR9280 chips
2002#device		ath_ar9285	# AR9285 chips
2003device		ath_rate_sample	# SampleRate tx rate control for ath
2004device		bwi		# Broadcom BCM430* BCM431*
2005device		bwn		# Broadcom BCM43xx
2006device		malo		# Marvell Libertas wireless NICs.
2007device		mwl		# Marvell 88W8363 802.11n wireless NICs.
2008device		mwlfw
2009device		ral		# Ralink Technology RT2500 wireless NICs.
2010device		rtwn		# Realtek wireless NICs
2011device		rtwnfw
2012
2013# Use sf_buf(9) interface for jumbo buffers on ti(4) controllers.
2014#options 	TI_SF_BUF_JUMBO
2015# Turn on the header splitting option for the ti(4) driver firmware.  This
2016# only works for Tigon II chips, and has no effect for Tigon I chips.
2017# This option requires the TI_SF_BUF_JUMBO option above.
2018#options 	TI_JUMBO_HDRSPLIT
2019
2020# These two options allow manipulating the mbuf cluster size and mbuf size,
2021# respectively.  Be very careful with NIC driver modules when changing
2022# these from their default values, because that can potentially cause a
2023# mismatch between the mbuf size assumed by the kernel and the mbuf size
2024# assumed by a module.  The only driver that currently has the ability to
2025# detect a mismatch is ti(4).
2026options 	MCLSHIFT=12	# mbuf cluster shift in bits, 12 == 4KB
2027options 	MSIZE=512	# mbuf size in bytes
2028
2029#
2030# Sound drivers
2031#
2032# sound: The generic sound driver.
2033#
2034
2035device		sound
2036
2037#
2038# snd_*: Device-specific drivers.
2039#
2040# The flags of the device tell the device a bit more info about the
2041# device that normally is obtained through the PnP interface.
2042#	bit  2..0   secondary DMA channel;
2043#	bit  4      set if the board uses two dma channels;
2044#	bit 15..8   board type, overrides autodetection; leave it
2045#		    zero if don't know what to put in (and you don't,
2046#		    since this is unsupported at the moment...).
2047#
2048# snd_ad1816:		Analog Devices AD1816 ISA PnP/non-PnP.
2049# snd_als4000:		Avance Logic ALS4000 PCI.
2050# snd_atiixp:		ATI IXP 200/300/400 PCI.
2051# snd_cmi:		CMedia CMI8338/CMI8738 PCI.
2052# snd_cs4281:		Crystal Semiconductor CS4281 PCI.
2053# snd_csa:		Crystal Semiconductor CS461x/428x PCI. (except
2054#			4281)
2055# snd_ds1:		Yamaha DS-1 PCI.
2056# snd_emu10k1:		Creative EMU10K1 PCI and EMU10K2 (Audigy) PCI.
2057# snd_emu10kx:		Creative SoundBlaster Live! and Audigy
2058# snd_envy24:		VIA Envy24 and compatible, needs snd_spicds.
2059# snd_envy24ht:		VIA Envy24HT and compatible, needs snd_spicds.
2060# snd_es137x:		Ensoniq AudioPCI ES137x PCI.
2061# snd_ess:		Ensoniq ESS ISA PnP/non-PnP, to be used in
2062#			conjunction with snd_sbc.
2063# snd_fm801:		Forte Media FM801 PCI.
2064# snd_gusc:		Gravis UltraSound ISA PnP/non-PnP.
2065# snd_hda:		Intel High Definition Audio (Controller) and
2066#			compatible.
2067# snd_hdspe:		RME HDSPe AIO and RayDAT.
2068# snd_ich:		Intel ICH AC'97 and some more audio controllers
2069#			embedded in a chipset, for example nVidia
2070#			nForce controllers.
2071# snd_maestro:		ESS Technology Maestro-1/2x PCI.
2072# snd_maestro3:		ESS Technology Maestro-3/Allegro PCI.
2073# snd_mss:		Microsoft Sound System ISA PnP/non-PnP.
2074# snd_neomagic:		Neomagic 256 AV/ZX PCI.
2075# snd_sb16:		Creative SoundBlaster16, to be used in
2076#			conjunction with snd_sbc.
2077# snd_sb8:		Creative SoundBlaster (pre-16), to be used in
2078#			conjunction with snd_sbc.
2079# snd_sbc:		Creative SoundBlaster ISA PnP/non-PnP.
2080#			Supports ESS and Avance ISA chips as well.
2081# snd_solo:		ESS Solo-1x PCI.
2082# snd_spicds:		SPI codec driver, needed by Envy24/Envy24HT drivers.
2083# snd_t4dwave:		Trident 4DWave DX/NX PCI, Sis 7018 PCI and Acer Labs
2084#			M5451 PCI.
2085# snd_uaudio:		USB audio.
2086# snd_via8233:		VIA VT8233x PCI.
2087# snd_via82c686:	VIA VT82C686A PCI.
2088# snd_vibes:		S3 Sonicvibes PCI.
2089
2090device		snd_ad1816
2091device		snd_als4000
2092device		snd_atiixp
2093device		snd_cmi
2094device		snd_cs4281
2095device		snd_csa
2096device		snd_ds1
2097device		snd_emu10k1
2098device		snd_emu10kx
2099device		snd_envy24
2100device		snd_envy24ht
2101device		snd_es137x
2102device		snd_ess
2103device		snd_fm801
2104device		snd_gusc
2105device		snd_hda
2106device		snd_hdspe
2107device		snd_ich
2108device		snd_maestro
2109device		snd_maestro3
2110device		snd_mss
2111device		snd_neomagic
2112device		snd_sb16
2113device		snd_sb8
2114device		snd_sbc
2115device		snd_solo
2116device		snd_spicds
2117device		snd_t4dwave
2118device		snd_uaudio
2119device		snd_via8233
2120device		snd_via82c686
2121device		snd_vibes
2122
2123# For non-PnP sound cards:
2124hint.pcm.0.at="isa"
2125hint.pcm.0.irq="10"
2126hint.pcm.0.drq="1"
2127hint.pcm.0.flags="0x0"
2128hint.sbc.0.at="isa"
2129hint.sbc.0.port="0x220"
2130hint.sbc.0.irq="5"
2131hint.sbc.0.drq="1"
2132hint.sbc.0.flags="0x15"
2133hint.gusc.0.at="isa"
2134hint.gusc.0.port="0x220"
2135hint.gusc.0.irq="5"
2136hint.gusc.0.drq="1"
2137hint.gusc.0.flags="0x13"
2138
2139#
2140# Following options are intended for debugging/testing purposes:
2141#
2142# SND_DEBUG                    Enable extra debugging code that includes
2143#                              sanity checking and possible increase of
2144#                              verbosity.
2145#
2146# SND_DIAGNOSTIC               Similar in a spirit of INVARIANTS/DIAGNOSTIC,
2147#                              zero tolerance against inconsistencies.
2148#
2149# SND_FEEDER_MULTIFORMAT       By default, only 16/32 bit feeders are compiled
2150#                              in. This options enable most feeder converters
2151#                              except for 8bit. WARNING: May bloat the kernel.
2152#
2153# SND_FEEDER_FULL_MULTIFORMAT  Ditto, but includes 8bit feeders as well.
2154#
2155# SND_FEEDER_RATE_HP           (feeder_rate) High precision 64bit arithmetic
2156#                              as much as possible (the default trying to
2157#                              avoid it). Possible slowdown.
2158#
2159# SND_PCM_64                   (Only applicable for i386/32bit arch)
2160#                              Process 32bit samples through 64bit
2161#                              integer/arithmetic. Slight increase of dynamic
2162#                              range at a cost of possible slowdown.
2163#
2164# SND_OLDSTEREO                Only 2 channels are allowed, effectively
2165#                              disabling multichannel processing.
2166#
2167options		SND_DEBUG
2168options		SND_DIAGNOSTIC
2169options		SND_FEEDER_MULTIFORMAT
2170options		SND_FEEDER_FULL_MULTIFORMAT
2171options		SND_FEEDER_RATE_HP
2172options		SND_PCM_64
2173options		SND_OLDSTEREO
2174
2175#
2176# Miscellaneous hardware:
2177#
2178# cmx: OmniKey CardMan 4040 pccard smartcard reader
2179
2180device		cmx
2181
2182#
2183# PC Card/PCMCIA and Cardbus
2184#
2185# cbb: pci/cardbus bridge implementing YENTA interface
2186# pccard: pccard slots
2187# cardbus: cardbus slots
2188device		cbb
2189device		pccard
2190device		cardbus
2191
2192#
2193# MMC/SD
2194#
2195# mmc 		MMC/SD bus
2196# mmcsd		MMC/SD memory card
2197# sdhci		Generic PCI SD Host Controller
2198#
2199device		mmc
2200device		mmcsd
2201device		sdhci
2202
2203#
2204# SMB bus
2205#
2206# System Management Bus support is provided by the 'smbus' device.
2207# Access to the SMBus device is via the 'smb' device (/dev/smb*),
2208# which is a child of the 'smbus' device.
2209#
2210# Supported devices:
2211# smb		standard I/O through /dev/smb*
2212#
2213# Supported SMB interfaces:
2214# iicsmb	I2C to SMB bridge with any iicbus interface
2215# intpm		Intel PIIX4 (82371AB, 82443MX) Power Management Unit
2216# alpm		Acer Aladdin-IV/V/Pro2 Power Management Unit
2217# ichsmb	Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
2218# viapm		VIA VT82C586B/596B/686A and VT8233 Power Management Unit
2219# amdpm		AMD 756 Power Management Unit
2220# amdsmb	AMD 8111 SMBus 2.0 Controller
2221# nfpm		NVIDIA nForce Power Management Unit
2222# nfsmb		NVIDIA nForce2/3/4 MCP SMBus 2.0 Controller
2223# ismt		Intel SMBus 2.0 controller chips (on Atom S1200, C2000)
2224#
2225device		smbus		# Bus support, required for smb below.
2226
2227device		intpm
2228device		alpm
2229device		ichsmb
2230device		viapm
2231device		amdpm
2232device		amdsmb
2233device		nfpm
2234device		nfsmb
2235device		ismt
2236
2237device		smb
2238
2239# SMBus peripheral devices
2240#
2241# jedec_dimm	Asset and temperature reporting for DDR3 and DDR4 DIMMs
2242#
2243device		jedec_dimm
2244
2245# I2C Bus
2246#
2247# Philips i2c bus support is provided by the `iicbus' device.
2248#
2249# Supported devices:
2250# ic	i2c network interface
2251# iic	i2c standard io
2252# iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
2253# iicoc simple polling driver for OpenCores I2C controller
2254#
2255# Other:
2256# iicbb	generic I2C bit-banging code (needed by lpbb)
2257#
2258device		iicbus		# Bus support, required for ic/iic/iicsmb below.
2259device		iicbb		# bitbang driver; implements i2c on a pair of gpio pins
2260
2261device		ic
2262device		iic		# userland access to i2c slave devices via ioctl(8)
2263device		iicsmb		# smb over i2c bridge
2264device		iicoc		# OpenCores I2C controller support
2265
2266# I2C bus multiplexer (mux) devices
2267device		iicmux		# i2c mux core driver
2268device		iic_gpiomux	# i2c mux hardware controlled via gpio pins
2269device		ltc430x		# LTC4305 and LTC4306 i2c mux chips
2270
2271# I2C peripheral devices
2272#
2273device		ad7418		# Analog Devices temp and voltage sensor
2274device		ads111x		# Texas Instruments ADS101x and ADS111x ADCs
2275device		ds1307		# Dallas DS1307 RTC and compatible
2276device		ds13rtc		# All Dallas/Maxim ds13xx chips
2277device		ds1672		# Dallas DS1672 RTC
2278device		ds3231		# Dallas DS3231 RTC + temperature
2279device		icee		# AT24Cxxx and compatible EEPROMs
2280device		isl12xx		# Intersil ISL12xx RTC
2281device		lm75		# LM75 compatible temperature sensor
2282device		nxprtc		# NXP RTCs: PCA/PFC212x PCA/PCF85xx
2283device		rtc8583		# Epson RTC-8583
2284device		s35390a		# Seiko Instruments S-35390A RTC
2285device		sy8106a		# Silergy Corp. SY8106A buck regulator
2286device		syr827		# Silergy Corp. DC/DC regulator
2287
2288# Parallel-Port Bus
2289#
2290# Parallel port bus support is provided by the `ppbus' device.
2291# Multiple devices may be attached to the parallel port, devices
2292# are automatically probed and attached when found.
2293#
2294# Supported devices:
2295# lpt	Parallel Printer
2296# plip	Parallel network interface
2297# ppi	General-purpose I/O ("Geek Port") + IEEE1284 I/O
2298# pps	Pulse per second Timing Interface
2299# lpbb	Philips official parallel port I2C bit-banging interface
2300# pcfclock Parallel port clock driver.
2301#
2302# Supported interfaces:
2303# ppc	ISA-bus parallel port interfaces.
2304#
2305
2306options 	PPC_PROBE_CHIPSET # Enable chipset specific detection
2307				  # (see flags in ppc(4))
2308options 	DEBUG_1284	# IEEE1284 signaling protocol debug
2309options 	PERIPH_1284	# Makes your computer act as an IEEE1284
2310				# compliant peripheral
2311options 	DONTPROBE_1284	# Avoid boot detection of PnP parallel devices
2312options 	LPT_DEBUG	# Printer driver debug
2313options 	PPC_DEBUG	# Parallel chipset level debug
2314options 	PLIP_DEBUG	# Parallel network IP interface debug
2315options 	PCFCLOCK_VERBOSE         # Verbose pcfclock driver
2316options 	PCFCLOCK_MAX_RETRIES=5   # Maximum read tries (default 10)
2317
2318device		ppc
2319hint.ppc.0.at="isa"
2320hint.ppc.0.irq="7"
2321device		ppbus
2322device		lpt
2323device		plip
2324device		ppi
2325device		pps
2326device		lpbb
2327device		pcfclock
2328
2329# General Purpose I/O pins
2330device		dwgpio		# Synopsys DesignWare APB GPIO Controller
2331device  	gpio		# gpio interfaces and bus support
2332device  	gpiobacklight	# sysctl control of gpio-based backlight
2333device  	gpioiic		# i2c via gpio bitbang
2334device  	gpiokeys	# kbd(4) glue for gpio-based key input
2335device  	gpioled		# led(4) gpio glue
2336device  	gpiopower	# event handler for gpio-based powerdown
2337device  	gpiopps		# Pulse per second input from gpio pin
2338device  	gpioregulator	# extres/regulator glue for gpio pin
2339device  	gpiospi		# SPI via gpio bitbang
2340device  	gpioths		# 1-wire temp/humidity sensor on gpio pin
2341
2342# Pulse width modulation
2343device  	pwmbus		# pwm interface and bus support
2344device  	pwmc		# userland control access to pwm outputs
2345
2346#
2347# Etherswitch framework and drivers
2348#
2349# etherswitch	The etherswitch(4) framework
2350# miiproxy	Proxy device for miibus(4) functionality
2351# 
2352# Switch hardware support:
2353# arswitch	Atheros switches
2354# ip17x 	IC+ 17x family switches
2355# rtl8366r	Realtek RTL8366 switches
2356# ukswitch	Multi-PHY switches
2357#
2358device		etherswitch
2359device		miiproxy
2360device		arswitch
2361device		ip17x
2362device		rtl8366rb
2363device		ukswitch
2364
2365# Kernel BOOTP support
2366
2367options 	BOOTP		# Use BOOTP to obtain IP address/hostname
2368				# Requires NFSCL and NFS_ROOT
2369options 	BOOTP_NFSROOT	# NFS mount root filesystem using BOOTP info
2370options 	BOOTP_NFSV3	# Use NFS v3 to NFS mount root
2371options 	BOOTP_COMPAT	# Workaround for broken bootp daemons.
2372options 	BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
2373options 	BOOTP_BLOCKSIZE=8192 # Override NFS block size
2374
2375#
2376# Enable software watchdog routines, even if hardware watchdog is present.
2377# By default, software watchdog timer is enabled only if no hardware watchdog
2378# is present.
2379#
2380options 	SW_WATCHDOG
2381
2382#
2383# Add the software deadlock resolver thread.
2384#
2385options 	DEADLKRES
2386
2387#
2388# Disable swapping of stack pages.  This option removes all
2389# code which actually performs swapping, so it's not possible to turn
2390# it back on at run-time.
2391#
2392# This is sometimes usable for systems which don't have any swap space
2393# (see also sysctl "vm.disable_swapspace_pageouts")
2394#
2395#options 	NO_SWAPPING
2396
2397# Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
2398# for sendfile(2) that are used to map file VM pages, and normally
2399# default to a quantity that is roughly 16*MAXUSERS+512. You would
2400# typically want about 4 of these for each simultaneous file send.
2401#
2402options 	NSFBUFS=1024
2403
2404#
2405# Enable extra debugging code for locks.  This stores the filename and
2406# line of whatever acquired the lock in the lock itself, and changes a
2407# number of function calls to pass around the relevant data.  This is
2408# not at all useful unless you are debugging lock code.  Note that
2409# modules should be recompiled as this option modifies KBI.
2410#
2411options 	DEBUG_LOCKS
2412
2413
2414#####################################################################
2415# USB support
2416# UHCI controller
2417device		uhci
2418# OHCI controller
2419device		ohci
2420# EHCI controller
2421device		ehci
2422# XHCI controller
2423device		xhci
2424# SL811 Controller
2425#device		slhci
2426# General USB code (mandatory for USB)
2427device		usb
2428#
2429# USB Double Bulk Pipe devices
2430device		udbp
2431# USB Fm Radio
2432device		ufm
2433# USB temperature meter
2434device		ugold
2435# USB LED
2436device		uled
2437# Human Interface Device (anything with buttons and dials)
2438device		uhid
2439# USB keyboard
2440device		ukbd
2441# USB printer
2442device		ulpt
2443# USB mass storage driver (Requires scbus and da)
2444device		umass
2445# USB mass storage driver for device-side mode
2446device		usfs
2447# USB support for Belkin F5U109 and Magic Control Technology serial adapters
2448device		umct
2449# USB modem support
2450device		umodem
2451# USB mouse
2452device		ums
2453# USB touchpad(s)
2454device		atp
2455device		wsp
2456# eGalax USB touch screen
2457device		uep
2458# Diamond Rio 500 MP3 player
2459device		urio
2460#
2461# USB serial support
2462device		ucom
2463# USB support for 3G modem cards by Option, Novatel, Huawei and Sierra
2464device		u3g
2465# USB support for Technologies ARK3116 based serial adapters
2466device		uark
2467# USB support for Belkin F5U103 and compatible serial adapters
2468device		ubsa
2469# USB support for serial adapters based on the FT8U100AX and FT8U232AM
2470device		uftdi
2471# USB support for some Windows CE based serial communication.
2472device		uipaq
2473# USB support for Prolific PL-2303 serial adapters
2474device		uplcom
2475# USB support for Silicon Laboratories CP2101/CP2102 based USB serial adapters
2476device		uslcom
2477# USB Visor and Palm devices
2478device		uvisor
2479# USB serial support for DDI pocket's PHS
2480device		uvscom
2481#
2482# USB ethernet support
2483device		uether
2484# ADMtek USB ethernet. Supports the LinkSys USB100TX,
2485# the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
2486# and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
2487# eval board.
2488device		aue
2489
2490# ASIX Electronics AX88172 USB 2.0 ethernet driver. Used in the
2491# LinkSys USB200M and various other adapters.
2492device		axe
2493# ASIX Electronics AX88178A/AX88179 USB 2.0/3.0 gigabit ethernet driver.
2494device		axge
2495
2496#
2497# Devices which communicate using Ethernet over USB, particularly
2498# Communication Device Class (CDC) Ethernet specification. Supports
2499# Sharp Zaurus PDAs, some DOCSIS cable modems and so on.
2500device		cdce
2501#
2502# CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
2503# and Netmate II, and the Belkin F5U111.
2504device		cue
2505#
2506# Kawasaki LSI ethernet. Supports the LinkSys USB10T,
2507# Entrega USB-NET-E45, Peracom Ethernet Adapter, the
2508# 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
2509# the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
2510# and 2104USB, and the Corega USB-T.
2511device		kue
2512#
2513# RealTek RTL8150 USB to fast ethernet. Supports the Melco LUA-KTX
2514# and the GREEN HOUSE GH-USB100B.
2515device		rue
2516#
2517# Davicom DM9601E USB to fast ethernet. Supports the Corega FEther USB-TXC.
2518device		udav
2519#
2520# RealTek RTL8152/RTL8153 USB Ethernet driver
2521device		ure
2522#
2523# Moschip MCS7730/MCS7840 USB to fast ethernet. Supports the Sitecom LN030.
2524device		mos
2525#
2526# HSxPA devices from Option N.V
2527device		uhso
2528
2529# Realtek RTL8188SU/RTL8191SU/RTL8192SU wireless driver
2530device		rsu
2531#
2532# Ralink Technology RT2501USB/RT2601USB wireless driver
2533device		rum
2534# Ralink Technology RT2700U/RT2800U/RT3000U wireless driver
2535device		run
2536#
2537# Atheros AR5523 wireless driver
2538device		uath
2539#
2540# Conexant/Intersil PrismGT wireless driver
2541device		upgt
2542#
2543# Ralink Technology RT2500USB wireless driver
2544device		ural
2545#
2546# RNDIS USB ethernet driver
2547device		urndis
2548# Realtek RTL8187B/L wireless driver
2549device		urtw
2550#
2551# ZyDas ZD1211/ZD1211B wireless driver
2552device		zyd
2553#
2554# Sierra USB wireless driver
2555device		usie
2556
2557# 
2558# debugging options for the USB subsystem
2559#
2560options 	USB_DEBUG
2561options 	U3G_DEBUG
2562
2563# options for ukbd:
2564options 	UKBD_DFLT_KEYMAP	# specify the built-in keymap
2565makeoptions	UKBD_DFLT_KEYMAP=jp.106
2566
2567# options for uplcom:
2568options 	UPLCOM_INTR_INTERVAL=100	# interrupt pipe interval
2569						# in milliseconds
2570
2571# options for uvscom:
2572options 	UVSCOM_DEFAULT_OPKTSIZE=8	# default output packet size
2573options 	UVSCOM_INTR_INTERVAL=100	# interrupt pipe interval
2574						# in milliseconds
2575
2576#####################################################################
2577# FireWire support
2578
2579device		firewire	# FireWire bus code
2580device		sbp		# SCSI over Firewire (Requires scbus and da)
2581device		sbp_targ	# SBP-2 Target mode  (Requires scbus and targ)
2582device		fwe		# Ethernet over FireWire (non-standard!)
2583device		fwip		# IP over FireWire (RFC2734 and RFC3146)
2584
2585#####################################################################
2586# dcons support (Dumb Console Device)
2587
2588device		dcons			# dumb console driver
2589device		dcons_crom		# FireWire attachment
2590options 	DCONS_BUF_SIZE=16384	# buffer size
2591options 	DCONS_POLL_HZ=100	# polling rate
2592options 	DCONS_FORCE_CONSOLE=0	# force to be the primary console
2593options 	DCONS_FORCE_GDB=1	# force to be the gdb device
2594
2595#####################################################################
2596# crypto subsystem
2597#
2598# This is a port of the OpenBSD crypto framework.  Include this when
2599# configuring IPSEC and when you have a h/w crypto device to accelerate
2600# user applications that link to OpenSSL.
2601#
2602# Drivers are ports from OpenBSD with some simple enhancements that have
2603# been fed back to OpenBSD.
2604
2605device		crypto		# core crypto support
2606
2607# Only install the cryptodev device if you are running tests, or know
2608# specifically why you need it.  In most cases, it is not needed and
2609# will make things slower.
2610device		cryptodev	# /dev/crypto for access to h/w
2611
2612device		rndtest		# FIPS 140-2 entropy tester
2613
2614device		ccr		# Chelsio T6
2615
2616device		hifn		# Hifn 7951, 7781, etc.
2617options 	HIFN_DEBUG	# enable debugging support: hw.hifn.debug
2618options 	HIFN_RNDTEST	# enable rndtest support
2619
2620device		ubsec		# Broadcom 5501, 5601, 58xx
2621options 	UBSEC_DEBUG	# enable debugging support: hw.ubsec.debug
2622options 	UBSEC_RNDTEST	# enable rndtest support
2623
2624#####################################################################
2625
2626
2627#
2628# Embedded system options:
2629#
2630# An embedded system might want to run something other than init.
2631options 	INIT_PATH=/sbin/init:/rescue/init
2632
2633# Debug options
2634options 	BUS_DEBUG	# enable newbus debugging
2635options 	DEBUG_VFS_LOCKS	# enable VFS lock debugging
2636options 	SOCKBUF_DEBUG	# enable sockbuf last record/mb tail checking
2637options 	IFMEDIA_DEBUG	# enable debugging in net/if_media.c
2638
2639#
2640# Verbose SYSINIT
2641#
2642# Make the SYSINIT process performed by mi_startup() verbose.  This is very
2643# useful when porting to a new architecture.  If DDB is also enabled, this
2644# will print function names instead of addresses.  If defined with a value
2645# of zero, the verbose code is compiled-in but disabled by default, and can
2646# be enabled with the debug.verbose_sysinit=1 tunable.
2647options 	VERBOSE_SYSINIT
2648
2649#####################################################################
2650# SYSV IPC KERNEL PARAMETERS
2651#
2652# Maximum number of System V semaphores that can be used on the system at
2653# one time.
2654options 	SEMMNI=11
2655
2656# Total number of semaphores system wide
2657options 	SEMMNS=61
2658
2659# Total number of undo structures in system
2660options 	SEMMNU=31
2661
2662# Maximum number of System V semaphores that can be used by a single process
2663# at one time.
2664options 	SEMMSL=61
2665
2666# Maximum number of operations that can be outstanding on a single System V
2667# semaphore at one time.
2668options 	SEMOPM=101
2669
2670# Maximum number of undo operations that can be outstanding on a single
2671# System V semaphore at one time.
2672options 	SEMUME=11
2673
2674# Maximum number of shared memory pages system wide.
2675options 	SHMALL=1025
2676
2677# Maximum size, in bytes, of a single System V shared memory region.
2678options 	SHMMAX=(SHMMAXPGS*PAGE_SIZE+1)
2679options 	SHMMAXPGS=1025
2680
2681# Minimum size, in bytes, of a single System V shared memory region.
2682options 	SHMMIN=2
2683
2684# Maximum number of shared memory regions that can be used on the system
2685# at one time.
2686options 	SHMMNI=33
2687
2688# Maximum number of System V shared memory regions that can be attached to
2689# a single process at one time.
2690options 	SHMSEG=9
2691
2692# Set the amount of time (in seconds) the system will wait before
2693# rebooting automatically when a kernel panic occurs.  If set to (-1),
2694# the system will wait indefinitely until a key is pressed on the
2695# console.
2696options 	PANIC_REBOOT_WAIT_TIME=16
2697
2698# Attempt to bypass the buffer cache and put data directly into the
2699# userland buffer for read operation when O_DIRECT flag is set on the
2700# file.  Both offset and length of the read operation must be
2701# multiples of the physical media sector size.
2702#
2703options 	DIRECTIO
2704
2705# Specify a lower limit for the number of swap I/O buffers.  They are
2706# (among other things) used when bypassing the buffer cache due to
2707# DIRECTIO kernel option enabled and O_DIRECT flag set on file.
2708#
2709options 	NSWBUF_MIN=120
2710
2711#####################################################################
2712
2713# More undocumented options for linting.
2714# Note that documenting these is not considered an affront.
2715
2716options 	CAM_DEBUG_DELAY
2717
2718# VFS cluster debugging.
2719options 	CLUSTERDEBUG
2720
2721options 	DEBUG
2722
2723# Kernel filelock debugging.
2724options 	LOCKF_DEBUG
2725
2726# System V compatible message queues
2727# Please note that the values provided here are used to test kernel
2728# building.  The defaults in the sources provide almost the same numbers.
2729# MSGSSZ must be a power of 2 between 8 and 1024.
2730options 	MSGMNB=2049	# Max number of chars in queue
2731options 	MSGMNI=41	# Max number of message queue identifiers
2732options 	MSGSEG=2049	# Max number of message segments
2733options 	MSGSSZ=16	# Size of a message segment
2734options 	MSGTQL=41	# Max number of messages in system
2735
2736options 	NBUF=512	# Number of buffer headers
2737
2738options 	SC_DEBUG_LEVEL=5	# Syscons debug level
2739options 	SC_RENDER_DEBUG	# syscons rendering debugging
2740
2741options 	VFS_BIO_DEBUG	# VFS buffer I/O debugging
2742
2743options 	KSTACK_MAX_PAGES=32 # Maximum pages to give the kernel stack
2744options 	KSTACK_USAGE_PROF
2745
2746# Adaptec Array Controller driver options
2747options 	AAC_DEBUG	# Debugging levels:
2748				# 0 - quiet, only emit warnings
2749				# 1 - noisy, emit major function
2750				#     points and things done
2751				# 2 - extremely noisy, emit trace
2752				#     items in loops, etc.
2753
2754# Resource Accounting
2755options 	RACCT
2756
2757# Resource Limits
2758options 	RCTL
2759
2760# Yet more undocumented options for linting.
2761options 	MAXFILES=999
2762
2763# Random number generator
2764# Allow the CSPRNG algorithm to be loaded as a module.
2765#options 	RANDOM_LOADABLE
2766# Select this to allow high-rate but potentially expensive
2767# harvesting of Slab-Allocator entropy. In very high-rate
2768# situations the value of doing this is dubious at best.
2769options 	RANDOM_ENABLE_UMA	# slab allocator
2770
2771# Select this to allow high-rate but potentially expensive
2772# harvesting of of the m_next pointer in the mbuf. Note that
2773# the m_next pointer is NULL except when receiving > 4K
2774# jumbo frames or sustained bursts by way of LRO. Thus in
2775# the common case it is stirring zero in to the entropy
2776# pool. In cases where it is not NULL it is pointing to one
2777# of a small (in the thousands to 10s of thousands) number
2778# of 256 byte aligned mbufs. Hence it is, even in the best
2779# case, a poor source of entropy. And in the absence of actual
2780# runtime analysis of entropy collection may mislead the user in
2781# to believe that substantially more entropy is being collected
2782# than in fact is - leading to a different class of security
2783# risk. In high packet rate situations ethernet entropy
2784# collection is also very expensive, possibly leading to as
2785# much as a 50% drop in packets received.
2786# This option is present to maintain backwards compatibility
2787# if desired, however it cannot be recommended for use in any
2788# environment.
2789options 	RANDOM_ENABLE_ETHER	# ether_input
2790
2791# Module to enable execution of application via emulators like QEMU
2792options         IMAGACT_BINMISC
2793
2794# zlib I/O stream support
2795# This enables support for compressed core dumps.
2796options 	GZIO
2797
2798# zstd support
2799# This enables support for Zstd compressed core dumps and GEOM_UZIP images.
2800options 	ZSTDIO
2801
2802# BHND(4) drivers
2803options		BHND_LOGLEVEL	# Logging threshold level
2804
2805# evdev interface 
2806device		evdev		# input event device support
2807options 	EVDEV_SUPPORT	# evdev support in legacy drivers
2808options 	EVDEV_DEBUG	# enable event debug msgs
2809device		uinput		# install /dev/uinput cdev
2810options 	UINPUT_DEBUG	# enable uinput debug msgs
2811
2812# Encrypted kernel crash dumps.
2813options 	EKCD
2814
2815# Serial Peripheral Interface (SPI) support.
2816device		spibus		# Bus support.
2817device		at45d		# DataFlash driver
2818device		cqspi		# 
2819device		mx25l		# SPIFlash driver
2820device		n25q		# 
2821device		spigen		# Generic access to SPI devices from userland.
2822# Enable legacy /dev/spigenN name aliases for /dev/spigenX.Y devices.
2823options 	SPIGEN_LEGACY_CDEVNAME # legacy device names for spigen
2824
2825# Compression supports.
2826device		zlib		# gzip/zlib compression/decompression library
2827device		xz		# xz_embedded LZMA de-compression library
2828
2829# Kernel support for stats(3).
2830options 	STATS