3 # NOTES -- Lines that can be cut/pasted into kernel and hints configs.
5 # Lines that begin with 'device', 'options', 'machine', 'ident', 'maxusers',
6 # 'makeoptions', 'hints', etc. go into the kernel configuration that you
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.
12 # Please use ``make LINT'' to create an old-style LINT file if you want to
13 # do kernel test-builds.
15 # This file contains machine independent kernel configuration notes. For
16 # machine dependent notes, look in /sys/<arch>/conf/NOTES.
20 # NOTES conventions and style guide:
22 # Large block comments should begin and end with a line containing only a
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.
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 "#!".
40 # This is the ``identification'' of the kernel. Usually this should
41 # be the same as the name of your kernel.
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.
54 # The `makeoptions' parameter allows variables to be passed to the
55 # generated Makefile in the build area.
57 # CONF_CFLAGS gives some extra compiler flags that are added to ${CFLAGS}
58 # after most other flags. Here we use it to inhibit use of non-optimal
59 # gcc builtin functions (e.g., memcmp).
61 # DEBUG happens to be magic.
62 # The following is equivalent to 'config -g KERNELNAME' and creates
63 # 'kernel.debug' compiled with -g debugging as well as a normal
64 # 'kernel'. Use 'make install.debug' to install the debug kernel
65 # but that isn't normally necessary as the debug symbols are not loaded
66 # by the kernel and are not useful there anyway.
68 # KERNEL can be overridden so that you can change the default name of your
71 # MODULES_OVERRIDE can be used to limit modules built to a specific list.
73 makeoptions CONF_CFLAGS=-fno-builtin #Don't allow use of memcmp, etc.
74 #makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
75 #makeoptions KERNEL=foo #Build kernel "foo" and install "/foo"
76 # Only build Linux API modules and plus those parts of the sound system I need.
77 #makeoptions MODULES_OVERRIDE="linux sound/sound sound/driver/maestro3"
78 makeoptions DESTDIR=/tmp
81 # FreeBSD processes are subject to certain limits to their consumption
82 # of system resources. See getrlimit(2) for more details. Each
83 # resource limit has two values, a "soft" limit and a "hard" limit.
84 # The soft limits can be modified during normal system operation, but
85 # the hard limits are set at boot time. Their default values are
86 # in sys/<arch>/include/vmparam.h. There are two ways to change them:
88 # 1. Set the values at kernel build time. The options below are one
89 # way to allow that limit to grow to 1GB. They can be increased
90 # further by changing the parameters:
92 # 2. In /boot/loader.conf, set the tunables kern.maxswzone,
93 # kern.maxbcache, kern.maxtsiz, kern.dfldsiz, kern.maxdsiz,
94 # kern.dflssiz, kern.maxssiz and kern.sgrowsiz.
96 # The options in /boot/loader.conf override anything in the kernel
97 # configuration file. See the function init_param1 in
98 # sys/kern/subr_param.c for more details.
101 options MAXDSIZ=(1024UL*1024*1024)
102 options MAXSSIZ=(128UL*1024*1024)
103 options DFLDSIZ=(1024UL*1024*1024)
106 # BLKDEV_IOSIZE sets the default block size used in user block
107 # device I/O. Note that this value will be overridden by the label
108 # when specifying a block device from a label with a non-0
109 # partition blocksize. The default is PAGE_SIZE.
111 options BLKDEV_IOSIZE=8192
113 # Options for the VM subsystem
114 # L2 cache size (in KB) can be specified in PQ_CACHESIZE
115 options PQ_CACHESIZE=512 # color for 512k cache
116 # Deprecated options supported for backwards compatibility
117 #options PQ_NOOPT # No coloring
118 #options PQ_LARGECACHE # color for 512k cache
119 #options PQ_HUGECACHE # color for 1024k cache
120 #options PQ_MEDIUMCACHE # color for 256k cache
121 #options PQ_NORMALCACHE # color for 64k cache
123 # This allows you to actually store this configuration file into
124 # the kernel binary itself, where it may be later read by saying:
125 # strings -n 3 /boot/kernel/kernel | sed -n 's/^___//p' > MYKERNEL
127 options INCLUDE_CONFIG_FILE # Include this file in kernel
129 options GEOM_AES # Don't use, use GEOM_BDE
130 options GEOM_APPLE # Apple partitioning
131 options GEOM_BDE # Disk encryption.
132 options GEOM_BSD # BSD disklabels
133 options GEOM_CONCAT # Disk concatenation.
134 options GEOM_ELI # Disk encryption.
135 options GEOM_FOX # Redundant path mitigation
136 options GEOM_GATE # Userland services.
137 options GEOM_GPT # GPT partitioning
138 options GEOM_LABEL # Providers labelization.
139 options GEOM_MBR # DOS/MBR partitioning
140 options GEOM_MIRROR # Disk mirroring.
141 options GEOM_NOP # Test class.
142 options GEOM_PC98 # NEC PC9800 partitioning
143 options GEOM_RAID3 # RAID3 functionality.
144 options GEOM_SHSEC # Shared secret.
145 options GEOM_STRIPE # Disk striping.
146 options GEOM_SUNLABEL # Sun/Solaris partitioning
147 options GEOM_UZIP # Read-only compressed disks
148 options GEOM_VOL # Volume names from UFS superblock
149 options GEOM_ZERO # Peformance testing helper.
152 # The root device and filesystem type can be compiled in;
153 # this provides a fallback option if the root device cannot
154 # be correctly guessed by the bootstrap code, or an override if
155 # the RB_DFLTROOT flag (-r) is specified when booting the kernel.
157 options ROOTDEVNAME=\"ufs:da0s2e\"
160 #####################################################################
163 # Specifying one of SCHED_4BSD or SCHED_ULE is mandatory. These options
164 # select which scheduler is compiled in.
166 # SCHED_4BSD is the historical, proven, BSD scheduler. It has a global run
167 # queue and no cpu affinity which makes it suboptimal for SMP. It has very
168 # good interactivity and priority selection.
170 # SCHED_ULE is a new scheduler that has been designed for SMP and has some
171 # advantages for UP as well. It is intended to replace the 4BSD scheduler
172 # over time. NOTE: SCHED_ULE is currently considered experimental and is
173 # not recommended for production use at this time.
178 #####################################################################
181 # SMP enables building of a Symmetric MultiProcessor Kernel.
184 options SMP # Symmetric MultiProcessor Kernel
186 # ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin
187 # if the thread that currently owns the mutex is executing on another
188 # CPU. This behaviour is enabled by default, so this option can be used
190 options NO_ADAPTIVE_MUTEXES
192 # ADAPTIVE_RWLOCKS changes the behavior of reader/writer locks to spin
193 # if the thread that currently owns the rwlock is executing on another
194 # CPU. This behaviour is enabled by default, so this option can be used
196 options NO_ADAPTIVE_RWLOCKS
199 # ADAPTIVE_GIANT causes the Giant lock to also be made adaptive when
200 # running without NO_ADAPTIVE_MUTEXES. Normally, because Giant is assumed
201 # to be held for extended periods, contention on Giant will cause a thread
202 # to sleep rather than spinning.
203 options ADAPTIVE_GIANT
206 # ADAPTIVE_SX changes the behavior of sx locks to spin if the thread
207 # that currently owns the lock is executing on another CPU. Note that
208 # in addition to enabling this option, individual sx locks must be
209 # initialized with the SX_ADAPTIVESPIN flag.
212 # MUTEX_NOINLINE forces mutex operations to call functions to perform each
213 # operation rather than inlining the simple cases. This can be used to
214 # shrink the size of the kernel text segment. Note that this behavior is
215 # already implied by the INVARIANT_SUPPORT, INVARIANTS, MUTEX_PROFILING,
216 # and WITNESS options.
217 options MUTEX_NOINLINE
219 # MUTEX_WAKE_ALL changes the mutex unlock algorithm to wake all waiters
220 # when a contested mutex is released rather than just awaking the highest
222 options MUTEX_WAKE_ALL
224 # RWLOCK_NOINLINE forces rwlock operations to call functions to perform each
225 # operation rather than inlining the simple cases. This can be used to
226 # shrink the size of the kernel text segment. Note that this behavior is
227 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
228 # and WITNESS options.
229 options RWLOCK_NOINLINE
231 # SX_NOINLINE forces sx lock operations to call functions to perform each
232 # operation rather than inlining the simple cases. This can be used to
233 # shrink the size of the kernel text segment. Note that this behavior is
234 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
235 # and WITNESS options.
238 # SMP Debugging Options:
240 # PREEMPTION allows the threads that are in the kernel to be preempted
241 # by higher priority threads. It helps with interactivity and
242 # allows interrupt threads to run sooner rather than waiting.
243 # WARNING! Only tested on alpha, amd64, and i386.
244 # FULL_PREEMPTION instructs the kernel to preempt non-realtime kernel
245 # threads. Its sole use is to expose race conditions and other
246 # bugs during development. Enabling this option will reduce
247 # performance and increase the frequency of kernel panics by
248 # design. If you aren't sure that you need it then you don't.
249 # Relies on the PREEMPTION option. DON'T TURN THIS ON.
250 # MUTEX_DEBUG enables various extra assertions in the mutex code.
251 # SLEEPQUEUE_PROFILING enables rudimentary profiling of the hash table
252 # used to hold active sleep queues.
253 # TURNSTILE_PROFILING enables rudimentary profiling of the hash table
254 # used to hold active lock queues.
255 # WITNESS enables the witness code which detects deadlocks and cycles
256 # during locking operations.
257 # WITNESS_KDB causes the witness code to drop into the kernel debugger if
258 # a lock hierarchy violation occurs or if locks are held when going to
260 # WITNESS_SKIPSPIN disables the witness checks on spin mutexes.
262 options FULL_PREEMPTION
266 options WITNESS_SKIPSPIN
268 # MUTEX_PROFILING - Profiling mutual exclusion locks (mutexes). See
269 # MUTEX_PROFILING(9) for details.
270 options MUTEX_PROFILING
271 # Set the number of buffers and the hash size. The hash size MUST be larger
272 # than the number of buffers. Hash size should be prime.
273 options MPROF_BUFFERS="1536"
274 options MPROF_HASH_SIZE="1543"
276 # Profiling for internal hash tables.
277 options SLEEPQUEUE_PROFILING
278 options TURNSTILE_PROFILING
281 #####################################################################
282 # COMPATIBILITY OPTIONS
285 # Implement system calls compatible with 4.3BSD and older versions of
286 # FreeBSD. You probably do NOT want to remove this as much current code
287 # still relies on the 4.3 emulation. Note that some architectures that
288 # are supported by FreeBSD do not include support for certain important
289 # aspects of this compatibility option, namely those related to the
290 # signal delivery mechanism.
294 # Enable FreeBSD4 compatibility syscalls
295 options COMPAT_FREEBSD4
297 # Enable FreeBSD5 compatibility syscalls
298 options COMPAT_FREEBSD5
301 # These three options provide support for System V Interface
302 # Definition-style interprocess communication, in the form of shared
303 # memory, semaphores, and message queues, respectively.
310 #####################################################################
314 # Compile with kernel debugger related code.
319 # Print a stack trace of the current thread on the console for a panic.
324 # Don't enter the debugger for a panic. Intended for unattended operation
325 # where you may want to enter the debugger from the console, but still want
326 # the machine to recover from a panic.
328 options KDB_UNATTENDED
331 # Enable the ddb debugger backend.
336 # Print the numerical value of symbols in addition to the symbolic
342 # Enable the remote gdb debugger backend.
347 # SYSCTL_DEBUG enables a 'sysctl' debug tree that can be used to dump the
348 # contents of the registered sysctl nodes on the console. It is disabled by
349 # default because it generates excessively verbose consol output that can
350 # interfere with serial console operation.
355 # DEBUG_MEMGUARD builds and enables memguard(9), a replacement allocator
356 # for the kernel used to detect modify-after-free scenarios. See the
357 # memguard(9) man page for more information on usage.
359 options DEBUG_MEMGUARD
362 # DEBUG_REDZONE enables buffer underflows and buffer overflows detection for
365 options DEBUG_REDZONE
368 # KTRACE enables the system-call tracing facility ktrace(2). To be more
369 # SMP-friendly, KTRACE uses a worker thread to process most trace events
370 # asynchronously to the thread generating the event. This requires a
371 # pre-allocated store of objects representing trace events. The
372 # KTRACE_REQUEST_POOL option specifies the initial size of this store.
373 # The size of the pool can be adjusted both at boottime and runtime via
374 # the kern.ktrace_request_pool tunable and sysctl.
376 options KTRACE #kernel tracing
377 options KTRACE_REQUEST_POOL=101
380 # KTR is a kernel tracing mechanism imported from BSD/OS. Currently
381 # it has no userland interface aside from a few sysctl's. It is
382 # enabled with the KTR option. KTR_ENTRIES defines the number of
383 # entries in the circular trace buffer; it must be a power of two.
384 # KTR_COMPILE defines the mask of events to compile into the kernel as
385 # defined by the KTR_* constants in <sys/ktr.h>. KTR_MASK defines the
386 # initial value of the ktr_mask variable which determines at runtime
387 # what events to trace. KTR_CPUMASK determines which CPU's log
388 # events, with bit X corresponding to cpu X. KTR_VERBOSE enables
389 # dumping of KTR events to the console by default. This functionality
390 # can be toggled via the debug.ktr_verbose sysctl and defaults to off
391 # if KTR_VERBOSE is not defined.
394 options KTR_ENTRIES=1024
395 options KTR_COMPILE=(KTR_INTR|KTR_PROC)
396 options KTR_MASK=KTR_INTR
397 options KTR_CPUMASK=0x3
401 # ALQ(9) is a facilty for the asynchronous queuing of records from the kernel
402 # to a vnode, and is employed by services such as KTR(4) to produce trace
403 # files based on a kernel event stream. Records are written asynchronously
404 # in a worker thread.
410 # Print information on which SYSINIT mi_startup() is up to. If DDB is
411 # enabled, DDB will be used to look up the name of the function and print
412 # that instead of the function pointer.
414 options VERBOSE_SYSINIT
417 # The INVARIANTS option is used in a number of source files to enable
418 # extra sanity checking of internal structures. This support is not
419 # enabled by default because of the extra time it would take to check
420 # for these conditions, which can only occur as a result of
421 # programming errors.
426 # The INVARIANT_SUPPORT option makes us compile in support for
427 # verifying some of the internal structures. It is a prerequisite for
428 # 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
429 # called. The intent is that you can set 'INVARIANTS' for single
430 # source files (by changing the source file or specifying it on the
431 # command line) if you have 'INVARIANT_SUPPORT' enabled. Also, if you
432 # wish to build a kernel module with 'INVARIANTS', then adding
433 # 'INVARIANT_SUPPORT' to your kernel will provide all the necessary
434 # infrastructure without the added overhead.
436 options INVARIANT_SUPPORT
439 # The DIAGNOSTIC option is used to enable extra debugging information
440 # from some parts of the kernel. As this makes everything more noisy,
441 # it is disabled by default.
446 # REGRESSION causes optional kernel interfaces necessary only for regression
447 # testing to be enabled. These interfaces may constitute security risks
448 # when enabled, as they permit processes to easily modify aspects of the
449 # run-time environment to reproduce unlikely or unusual (possibly normally
450 # impossible) scenarios.
455 # RESTARTABLE_PANICS allows one to continue from a panic as if it were
456 # a call to the debugger via the Debugger() function instead. It is only
457 # useful if a kernel debugger is present. To restart from a panic, reset
458 # the panicstr variable to NULL and continue execution. This option is
459 # for development use only and should NOT be used in production systems
460 # to "workaround" a panic.
462 #options RESTARTABLE_PANICS
465 # This option let some drivers co-exist that can't co-exist in a running
466 # system. This is used to be able to compile all kernel code in one go for
467 # quality assurance purposes (like this file, which the option takes it name
470 options COMPILING_LINT
473 #####################################################################
474 # PERFORMANCE MONITORING OPTIONS
477 # The hwpmc driver that allows the use of in-CPU performance monitoring
478 # counters for performance monitoring. The base kernel needs to configured
479 # with the 'options' line, while the hwpmc device can be either compiled
480 # in or loaded as a loadable kernel module.
482 # Additional configuration options may be required on specific architectures,
483 # please see hwpmc(4).
485 device hwpmc # Driver (also a loadable module)
486 options HWPMC_HOOKS # Other necessary kernel hooks
489 #####################################################################
494 # Only the INET (Internet) family is officially supported in FreeBSD.
496 options INET #Internet communications protocols
497 options INET6 #IPv6 communications protocols
498 options IPSEC #IP security
499 options IPSEC_ESP #IP security (crypto; define w/ IPSEC)
500 options IPSEC_DEBUG #debug for IP security
502 # Set IPSEC_FILTERGIF to force packets coming through a gif tunnel
503 # to be processed by any configured packet filtering (ipfw, ipf).
504 # The default is that packets coming from a tunnel are _not_ processed;
505 # they are assumed trusted.
507 # IPSEC history is preserved for such packets, and can be filtered
508 # using ipfw(8)'s 'ipsec' keyword, when this option is enabled.
510 #options IPSEC_FILTERGIF #filter ipsec packets from a tunnel
512 #options FAST_IPSEC #new IPsec (cannot define w/ IPSEC)
514 options IPX #IPX/SPX communications protocols
515 options IPXIP #IPX in IP encapsulation (not available)
517 options NCP #NetWare Core protocol
519 options NETATALK #Appletalk communications protocols
520 options NETATALKDEBUG #Appletalk debugging
524 # NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
526 options NETSMB #SMB/CIFS requester
528 # mchain library. It can be either loaded as KLD or compiled into kernel
531 # libalias library, performing NAT
534 # altq(9). Enable the base part of the hooks with the ALTQ option.
535 # Individual disciplines must be built into the base system and can not be
536 # loaded as modules at this point. In order to build a SMP kernel you must
537 # also have the ALTQ_NOPCC option.
539 options ALTQ_CBQ # Class Bases Queueing
540 options ALTQ_RED # Random Early Detection
541 options ALTQ_RIO # RED In/Out
542 options ALTQ_HFSC # Hierarchical Packet Scheduler
543 options ALTQ_CDNR # Traffic conditioner
544 options ALTQ_PRIQ # Priority Queueing
545 options ALTQ_NOPCC # Required for SMP build
548 # netgraph(4). Enable the base netgraph code with the NETGRAPH option.
549 # Individual node types can be enabled with the corresponding option
550 # listed below; however, this is not strictly necessary as netgraph
551 # will automatically load the corresponding KLD module if the node type
552 # is not already compiled into the kernel. Each type below has a
553 # corresponding man page, e.g., ng_async(8).
554 options NETGRAPH # netgraph(4) system
555 options NETGRAPH_DEBUG # enable extra debugging, this
556 # affects netgraph(4) and nodes
558 options NETGRAPH_ASYNC
559 options NETGRAPH_ATMLLC
560 options NETGRAPH_ATM_ATMPIF
561 options NETGRAPH_BLUETOOTH # ng_bluetooth(4)
562 options NETGRAPH_BLUETOOTH_BT3C # ng_bt3c(4)
563 options NETGRAPH_BLUETOOTH_H4 # ng_h4(4)
564 options NETGRAPH_BLUETOOTH_HCI # ng_hci(4)
565 options NETGRAPH_BLUETOOTH_L2CAP # ng_l2cap(4)
566 options NETGRAPH_BLUETOOTH_SOCKET # ng_btsocket(4)
567 options NETGRAPH_BLUETOOTH_UBT # ng_ubt(4)
568 options NETGRAPH_BLUETOOTH_UBTBCMFW # ubtbcmfw(4)
570 options NETGRAPH_BRIDGE
571 options NETGRAPH_CISCO
572 options NETGRAPH_DEFLATE
573 options NETGRAPH_DEVICE
574 options NETGRAPH_ECHO
575 options NETGRAPH_EIFACE
576 options NETGRAPH_ETHER
578 options NETGRAPH_FRAME_RELAY
580 options NETGRAPH_GIF_DEMUX
581 options NETGRAPH_HOLE
582 options NETGRAPH_IFACE
583 options NETGRAPH_IP_INPUT
584 options NETGRAPH_IPFW
585 options NETGRAPH_KSOCKET
586 options NETGRAPH_L2TP
588 # MPPC compression requires proprietary files (not included)
589 #options NETGRAPH_MPPC_COMPRESSION
590 options NETGRAPH_MPPC_ENCRYPTION
591 options NETGRAPH_NETFLOW
593 options NETGRAPH_ONE2MANY
595 options NETGRAPH_PPPOE
596 options NETGRAPH_PPTPGRE
597 options NETGRAPH_PRED1
598 options NETGRAPH_RFC1490
599 options NETGRAPH_SOCKET
600 options NETGRAPH_SPLIT
601 options NETGRAPH_SPPP
603 options NETGRAPH_TCPMSS
609 # NgATM - Netgraph ATM
611 options NGATM_ATMBASE
617 device mn # Munich32x/Falc54 Nx64kbit/sec cards.
620 # Network interfaces:
621 # The `loop' device is MANDATORY when networking is enabled.
622 # The `ether' device provides generic code to handle
623 # Ethernets; it is MANDATORY when an Ethernet device driver is
624 # configured or token-ring is enabled.
625 # The `vlan' device implements the VLAN tagging of Ethernet frames
626 # according to IEEE 802.1Q. It requires `device miibus'.
627 # The `wlan' device provides generic code to support 802.11
628 # drivers, including host AP mode; it is MANDATORY for the wi,
629 # ath, and awi drivers and will eventually be required by all 802.11 drivers.
630 # The `wlan_wep', `wlan_tkip', and `wlan_ccmp' devices provide
631 # support for WEP, TKIP, and AES-CCMP crypto protocols optionally
632 # used with 802.11 devices that depend on the `wlan' module.
633 # The `wlan_xauth' device provides support for external (i.e. user-mode)
634 # authenticators for use with 802.11 drivers that use the `wlan'
635 # module and support 802.1x and/or WPA security protocols.
636 # The `wlan_acl' device provides a MAC-based access control mechanism
637 # for use with 802.11 drivers operating in ap mode and using the
639 # The `fddi' device provides generic code to support FDDI.
640 # The `arcnet' device provides generic code to support Arcnet.
641 # The `sppp' device serves a similar role for certain types
642 # of synchronous PPP links (like `cx', `ar').
643 # The `sl' device implements the Serial Line IP (SLIP) service.
644 # The `ppp' device implements the Point-to-Point Protocol.
645 # The `bpf' device enables the Berkeley Packet Filter. Be
646 # aware of the legal and administrative consequences of enabling this
647 # option. The number of devices determines the maximum number of
648 # simultaneous BPF clients programs runnable. DHCP requires bpf.
649 # The `disc' device implements a minimal network interface,
650 # which throws away all packets sent and never receives any. It is
651 # included for testing and benchmarking purposes.
652 # The `edsc' device implements a minimal Ethernet interface,
653 # which discards all packets sent and receives none.
654 # The `tap' device is a pty-like virtual Ethernet interface
655 # The `tun' device implements (user-)ppp and nos-tun
656 # The `gif' device implements IPv6 over IP4 tunneling,
657 # IPv4 over IPv6 tunneling, IPv4 over IPv4 tunneling and
658 # IPv6 over IPv6 tunneling.
659 # The `gre' device implements two types of IP4 over IP4 tunneling:
660 # GRE and MOBILE, as specified in the RFC1701 and RFC2004.
661 # The XBONEHACK option allows the same pair of addresses to be configured on
662 # multiple gif interfaces.
663 # The `faith' device captures packets sent to it and diverts them
664 # to the IPv4/IPv6 translation daemon.
665 # The `stf' device implements 6to4 encapsulation.
666 # The `ef' device provides support for multiple ethernet frame types
667 # specified via ETHER_* options. See ef(4) for details.
669 # The pf packet filter consists of three devices:
670 # The `pf' device provides /dev/pf and the firewall code itself.
671 # The `pflog' device provides the pflog0 interface which logs packets.
672 # The `pfsync' device provides the pfsync0 interface used for
673 # synchronization of firewall state tables (over the net).
675 # The PPP_BSDCOMP option enables support for compress(1) style entire
676 # packet compression, the PPP_DEFLATE is for zlib/gzip style compression.
677 # PPP_FILTER enables code for filtering the ppp data stream and selecting
678 # events for resetting the demand dial activity timer - requires bpf.
679 # See pppd(8) for more details.
681 device ether #Generic Ethernet
682 device vlan #VLAN support (needs miibus)
683 device wlan #802.11 support
684 device wlan_wep #802.11 WEP support
685 device wlan_ccmp #802.11 CCMP support
686 device wlan_tkip #802.11 TKIP support
687 device wlan_xauth #802.11 external authenticator support
688 device wlan_acl #802.11 MAC ACL support
689 device token #Generic TokenRing
690 device fddi #Generic FDDI
691 device arcnet #Generic Arcnet
692 device sppp #Generic Synchronous PPP
693 device loop #Network loopback device
694 device bpf #Berkeley packet filter
695 device disc #Discard device based on loopback
696 device edsc #Ethernet discard device
697 device tap #Virtual Ethernet driver
698 device tun #Tunnel driver (ppp(8), nos-tun(8))
699 device sl #Serial Line IP
700 device gre #IP over IP tunneling
701 device if_bridge #Bridge interface
702 device pf #PF OpenBSD packet-filter firewall
703 device pflog #logging support interface for PF
704 device pfsync #synchronization interface for PF
705 device carp #Common Address Redundancy Protocol
706 device ppp #Point-to-point protocol
707 options PPP_BSDCOMP #PPP BSD-compress support
708 options PPP_DEFLATE #PPP zlib/deflate/gzip support
709 options PPP_FILTER #enable bpf filtering (needs bpf)
710 device lagg #Link aggregation interface
712 device ef # Multiple ethernet frames support
713 options ETHER_II # enable Ethernet_II frame
714 options ETHER_8023 # enable Ethernet_802.3 (Novell) frame
715 options ETHER_8022 # enable Ethernet_802.2 frame
716 options ETHER_SNAP # enable Ethernet_802.2/SNAP frame
719 device gif #IPv6 and IPv4 tunneling
721 device faith #for IPv6 and IPv4 translation
722 device stf #6to4 IPv6 over IPv4 encapsulation
725 # Internet family options:
727 # MROUTING enables the kernel multicast packet forwarder, which works
730 # PIM enables Protocol Independent Multicast in the kernel.
731 # Requires MROUTING enabled.
733 # IPFIREWALL enables support for IP firewall construction, in
734 # conjunction with the `ipfw' program. IPFIREWALL_VERBOSE sends
735 # logged packets to the system logger. IPFIREWALL_VERBOSE_LIMIT
736 # limits the number of times a matching entry can be logged.
738 # WARNING: IPFIREWALL defaults to a policy of "deny ip from any to any"
739 # and if you do not add other rules during startup to allow access,
740 # YOU WILL LOCK YOURSELF OUT. It is suggested that you set firewall_type=open
741 # in /etc/rc.conf when first enabling this feature, then refining the
742 # firewall rules in /etc/rc.firewall after you've tested that the new kernel
743 # feature works properly.
745 # IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
746 # allow everything. Use with care, if a cracker can crash your
747 # firewall machine, they can get to your protected machines. However,
748 # if you are using it as an as-needed filter for specific problems as
749 # they arise, then this may be for you. Changing the default to 'allow'
750 # means that you won't get stuck if the kernel and /sbin/ipfw binary get
753 # IPDIVERT enables the divert IP sockets, used by ``ipfw divert''. It
754 # depends on IPFIREWALL if compiled into the kernel.
756 # IPFIREWALL_FORWARD enables changing of the packet destination either
757 # to do some sort of policy routing or transparent proxying. Used by
758 # ``ipfw forward''. All redirections apply to locally generated
759 # packets too. Because of this great care is required when
760 # crafting the ruleset.
762 # IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
763 # packets without touching the ttl). This can be useful to hide firewalls
764 # from traceroute and similar tools.
766 # TCPDEBUG enables code which keeps traces of the TCP state machine
767 # for sockets with the SO_DEBUG option set, which can then be examined
768 # using the trpt(8) utility.
770 options MROUTING # Multicast routing
771 options PIM # Protocol Independent Multicast
772 options IPFIREWALL #firewall
773 options IPFIREWALL_VERBOSE #enable logging to syslogd(8)
774 options IPFIREWALL_VERBOSE_LIMIT=100 #limit verbosity
775 options IPFIREWALL_DEFAULT_TO_ACCEPT #allow everything by default
776 options IPFIREWALL_FORWARD #packet destination changes
777 options IPV6FIREWALL #firewall for IPv6
778 options IPV6FIREWALL_VERBOSE
779 options IPV6FIREWALL_VERBOSE_LIMIT=100
780 options IPV6FIREWALL_DEFAULT_TO_ACCEPT
781 options IPDIVERT #divert sockets
782 options IPFILTER #ipfilter support
783 options IPFILTER_LOG #ipfilter logging
784 options IPFILTER_LOOKUP #ipfilter pools
785 options IPFILTER_DEFAULT_BLOCK #block all packets by default
786 options IPSTEALTH #support for stealth forwarding
789 # The MBUF_STRESS_TEST option enables options which create
790 # various random failures / extreme cases related to mbuf
791 # functions. See mbuf(9) for a list of available test cases.
792 options MBUF_STRESS_TEST
794 # Statically Link in accept filters
795 options ACCEPT_FILTER_DATA
796 options ACCEPT_FILTER_HTTP
798 # TCP_DROP_SYNFIN adds support for ignoring TCP packets with SYN+FIN. This
799 # prevents nmap et al. from identifying the TCP/IP stack, but breaks support
800 # for RFC1644 extensions and is not recommended for web servers.
802 options TCP_DROP_SYNFIN #drop TCP packets with SYN+FIN
804 # TCP_SIGNATURE adds support for RFC 2385 (TCP-MD5) digests. These are
805 # carried in TCP option 19. This option is commonly used to protect
806 # TCP sessions (e.g. BGP) where IPSEC is not available nor desirable.
807 # This is enabled on a per-socket basis using the TCP_MD5SIG socket option.
808 # This requires the use of 'device crypto', 'options FAST_IPSEC' or 'options
809 # IPSEC', and 'device cryptodev'.
810 #options TCP_SIGNATURE #include support for RFC 2385
812 # DUMMYNET enables the "dummynet" bandwidth limiter. You need IPFIREWALL
813 # as well. See dummynet(4) and ipfw(8) for more info. When you run
814 # DUMMYNET it is advisable to also have at least "options HZ=1000" to achieve
815 # a smooth scheduling of the traffic.
819 # BRIDGE enables bridging between ethernet cards -- see bridge(4).
820 # You can use IPFIREWALL and DUMMYNET together with bridging.
821 # NOTE: This option is deprecated and will be removed in the future.
822 # See if_bridge(4) for an alternative.
826 # Zero copy sockets support. This enables "zero copy" for sending and
827 # receiving data via a socket. The send side works for any type of NIC,
828 # the receive side only works for NICs that support MTUs greater than the
829 # page size of your architecture and that support header splitting. See
830 # zero_copy(9) for more details.
831 options ZERO_COPY_SOCKETS
834 # ATM (HARP version) options
836 # ATM_CORE includes the base ATM functionality code. This must be included
839 # ATM_IP includes support for running IP over ATM.
841 # At least one (and usually only one) of the following signalling managers
842 # must be included (note that all signalling managers include PVC support):
843 # ATM_SIGPVC includes support for the PVC-only signalling manager `sigpvc'.
844 # ATM_SPANS includes support for the `spans' signalling manager, which runs
845 # the FORE Systems's proprietary SPANS signalling protocol.
846 # ATM_UNI includes support for the `uni30' and `uni31' signalling managers,
847 # which run the ATM Forum UNI 3.x signalling protocols.
849 # The `hfa' driver provides support for the FORE Systems, Inc.
850 # PCA-200E ATM PCI Adapter.
852 # The `harp' pseudo-driver makes all NATM interface drivers available to HARP.
854 options ATM_CORE #core ATM protocol family
855 options ATM_IP #IP over ATM support
856 options ATM_SIGPVC #SIGPVC signalling manager
857 options ATM_SPANS #SPANS signalling manager
858 options ATM_UNI #UNI signalling manager
860 device hfa #FORE PCA-200E ATM PCI
861 device harp #Pseudo-interface for NATM
864 #####################################################################
868 # Only the root, /usr, and /tmp filesystems need be statically
869 # compiled; everything else will be automatically loaded at mount
870 # time. (Exception: the UFS family--- FFS --- cannot
871 # currently be demand-loaded.) Some people still prefer to statically
872 # compile other filesystems as well.
874 # NB: The PORTAL, UMAP and UNION filesystems are known to be buggy, and
875 # WILL panic your system if you attempt to do anything with them. They
876 # are included here as an incentive for some enterprising soul to sit
880 # One of these is mandatory:
881 options FFS #Fast filesystem
882 options NFSCLIENT #Network File System client
884 # The rest are optional:
885 options CD9660 #ISO 9660 filesystem
886 options FDESCFS #File descriptor filesystem
887 options HPFS #OS/2 File system
888 options MSDOSFS #MS DOS File System (FAT, FAT32)
889 options NFSSERVER #Network File System server
890 # XXX don't build NFSLOCKD since it conflicts with ATM_SPANS
891 #options NFSLOCKD #Network Lock Manager
892 options NTFS #NT File System
893 options NULLFS #NULL filesystem
894 # Broken (depends on NCP):
895 #options NWFS #NetWare filesystem
896 options PORTALFS #Portal filesystem
897 options PROCFS #Process filesystem (requires PSEUDOFS)
898 options PSEUDOFS #Pseudo-filesystem framework
899 options PSEUDOFS_TRACE #Debugging support for PSEUDOFS
900 options SMBFS #SMB/CIFS filesystem
901 options UDF #Universal Disk Format
902 # Broken (seriously (functionally) broken):
903 #options UMAPFS #UID map filesystem
904 options UNIONFS #Union filesystem
905 # The xFS_ROOT options REQUIRE the associated ``options xFS''
906 options NFS_ROOT #NFS usable as root device
908 # Soft updates is a technique for improving filesystem speed and
909 # making abrupt shutdown less risky.
913 # Extended attributes allow additional data to be associated with files,
914 # and is used for ACLs, Capabilities, and MAC labels.
915 # See src/sys/ufs/ufs/README.extattr for more information.
917 options UFS_EXTATTR_AUTOSTART
919 # Access Control List support for UFS filesystems. The current ACL
920 # implementation requires extended attribute support, UFS_EXTATTR,
921 # for the underlying filesystem.
922 # See src/sys/ufs/ufs/README.acls for more information.
925 # Directory hashing improves the speed of operations on very large
926 # directories at the expense of some memory.
929 # Make space in the kernel for a root filesystem on a md device.
930 # Define to the number of kilobytes to reserve for the filesystem.
931 options MD_ROOT_SIZE=10
933 # Make the md device a potential root device, either with preloaded
934 # images of type mfs_root or md_root.
937 # Disk quotas are supported when this option is enabled.
938 options QUOTA #enable disk quotas
940 # If you are running a machine just as a fileserver for PC and MAC
941 # users, using SAMBA or Netatalk, you may consider setting this option
942 # and keeping all those users' directories on a filesystem that is
943 # mounted with the suiddir option. This gives new files the same
944 # ownership as the directory (similar to group). It's a security hole
945 # if you let these users run programs, so confine it to file-servers
946 # (but it'll save you lots of headaches in those cases). Root owned
947 # directories are exempt and X bits are cleared. The suid bit must be
948 # set on the directory as well; see chmod(1) PC owners can't see/set
949 # ownerships so they keep getting their toes trodden on. This saves
950 # you all the support calls as the filesystem it's used on will act as
951 # they expect: "It's my dir so it must be my file".
956 options NFS_MINATTRTIMO=3 # VREG attrib cache timeout in sec
957 options NFS_MAXATTRTIMO=60
958 options NFS_MINDIRATTRTIMO=30 # VDIR attrib cache timeout in sec
959 options NFS_MAXDIRATTRTIMO=60
960 options NFS_GATHERDELAY=10 # Default write gather delay (msec)
961 options NFS_WDELAYHASHSIZ=16 # and with this
962 options NFS_DEBUG # Enable NFS Debugging
965 options CODA #CODA filesystem.
966 device vcoda #coda minicache <-> venus comm.
967 # Use the old Coda 5.x venus<->kernel interface instead of the new
968 # realms-aware 6.x protocol.
969 #options CODA_COMPAT_5
972 # Add support for the EXT2FS filesystem of Linux fame. Be a bit
973 # careful with this - the ext2fs code has a tendency to lag behind
974 # changes and not be exercised very much, so mounting read/write could
975 # be dangerous (and even mounting read only could result in panics.)
980 # Add support for the ReiserFS filesystem (used in Linux). Currently,
981 # this is limited to read-only access.
985 # Use real implementations of the aio_* system calls. There are numerous
986 # stability and security issues in the current aio code that make it
987 # unsuitable for inclusion on machines with untrusted local users.
990 # Cryptographically secure random number generator; /dev/random
993 # The system memory devices; /dev/mem, /dev/kmem
996 # Optional character code conversion support with LIBICONV.
997 # Each option requires their base file system and LIBICONV.
999 options MSDOSFS_ICONV
1004 #####################################################################
1007 # Real time extensions added in the 1993 Posix
1008 # _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
1010 options _KPOSIX_PRIORITY_SCHEDULING
1011 # p1003_1b_semaphores are very experimental,
1012 # user should be ready to assist in debugging if problems arise.
1013 options P1003_1B_SEMAPHORES
1016 #####################################################################
1017 # SECURITY POLICY PARAMETERS
1019 # Support for BSM audit
1022 # Support for Mandatory Access Control (MAC):
1025 options MAC_BSDEXTENDED
1031 options MAC_PARTITION
1033 options MAC_SEEOTHERUIDS
1038 #####################################################################
1041 # The granularity of operation is controlled by the kernel option HZ whose
1042 # default value (1000 on most architectures) means a granularity of 1ms
1043 # (1s/HZ). Historically, the default was 100, but finer granularity is
1044 # required for DUMMYNET and other systems on modern hardware. There are
1045 # reasonable arguments that HZ should, in fact, be 100 still; consider,
1046 # that reducing the granularity too much might cause excessive overhead in
1047 # clock interrupt processing, potentially causing ticks to be missed and thus
1048 # actually reducing the accuracy of operation.
1052 # Enable support for the kernel PLL to use an external PPS signal,
1053 # under supervision of [x]ntpd(8)
1054 # More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
1059 #####################################################################
1062 # SCSI DEVICE CONFIGURATION
1064 # The SCSI subsystem consists of the `base' SCSI code, a number of
1065 # high-level SCSI device `type' drivers, and the low-level host-adapter
1066 # device drivers. The host adapters are listed in the ISA and PCI
1067 # device configuration sections below.
1069 # It is possible to wire down your SCSI devices so that a given bus,
1070 # target, and LUN always come on line as the same device unit. In
1071 # earlier versions the unit numbers were assigned in the order that
1072 # the devices were probed on the SCSI bus. This means that if you
1073 # removed a disk drive, you may have had to rewrite your /etc/fstab
1074 # file, and also that you had to be careful when adding a new disk
1075 # as it may have been probed earlier and moved your device configuration
1076 # around. (See also option GEOM_VOL for a different solution to this
1079 # This old behavior is maintained as the default behavior. The unit
1080 # assignment begins with the first non-wired down unit for a device
1081 # type. For example, if you wire a disk as "da3" then the first
1082 # non-wired disk will be assigned da4.
1084 # The syntax for wiring down devices is:
1086 hint.scbus.0.at="ahc0"
1087 hint.scbus.1.at="ahc1"
1088 hint.scbus.1.bus="0"
1089 hint.scbus.3.at="ahc2"
1090 hint.scbus.3.bus="0"
1091 hint.scbus.2.at="ahc2"
1092 hint.scbus.2.bus="1"
1093 hint.da.0.at="scbus0"
1094 hint.da.0.target="0"
1096 hint.da.1.at="scbus3"
1097 hint.da.1.target="1"
1098 hint.da.2.at="scbus2"
1099 hint.da.2.target="3"
1100 hint.sa.1.at="scbus1"
1101 hint.sa.1.target="6"
1103 # "units" (SCSI logical unit number) that are not specified are
1104 # treated as if specified as LUN 0.
1106 # All SCSI devices allocate as many units as are required.
1108 # The ch driver drives SCSI Media Changer ("jukebox") devices.
1110 # The da driver drives SCSI Direct Access ("disk") and Optical Media
1113 # The sa driver drives SCSI Sequential Access ("tape") devices.
1115 # The cd driver drives SCSI Read Only Direct Access ("cd") devices.
1117 # The ses driver drives SCSI Environment Services ("ses") and
1118 # SAF-TE ("SCSI Accessible Fault-Tolerant Enclosure") devices.
1120 # The pt driver drives SCSI Processor devices.
1122 # The sg driver provides a passthrough API that is compatible with the
1123 # Linux SG driver. It will work in conjunction with the COMPAT_LINUX
1124 # option to run linux SG apps. It can also stand on its own and provide
1125 # source level API compatiblity for porting apps to FreeBSD.
1127 # Target Mode support is provided here but also requires that a SIM
1128 # (SCSI Host Adapter Driver) provide support as well.
1130 # The targ driver provides target mode support as a Processor type device.
1131 # It exists to give the minimal context necessary to respond to Inquiry
1132 # commands. There is a sample user application that shows how the rest
1133 # of the command support might be done in /usr/share/examples/scsi_target.
1135 # The targbh driver provides target mode support and exists to respond
1136 # to incoming commands that do not otherwise have a logical unit assigned
1139 # The "unknown" device (uk? in pre-2.0.5) is now part of the base SCSI
1140 # configuration as the "pass" driver.
1142 device scbus #base SCSI code
1143 device ch #SCSI media changers
1144 device da #SCSI direct access devices (aka disks)
1145 device sa #SCSI tapes
1146 device cd #SCSI CD-ROMs
1147 device ses #SCSI Environmental Services (and SAF-TE)
1148 device pt #SCSI processor
1149 device targ #SCSI Target Mode Code
1150 device targbh #SCSI Target Mode Blackhole Device
1151 device pass #CAM passthrough driver
1152 device sg #Linux SCSI passthrough
1155 # debugging options:
1156 # -- NOTE -- If you specify one of the bus/target/lun options, you must
1158 # CAMDEBUG: When defined enables debugging macros
1159 # CAM_DEBUG_BUS: Debug the given bus. Use -1 to debug all busses.
1160 # CAM_DEBUG_TARGET: Debug the given target. Use -1 to debug all targets.
1161 # CAM_DEBUG_LUN: Debug the given lun. Use -1 to debug all luns.
1162 # CAM_DEBUG_FLAGS: OR together CAM_DEBUG_INFO, CAM_DEBUG_TRACE,
1163 # CAM_DEBUG_SUBTRACE, and CAM_DEBUG_CDB
1165 # CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
1166 # CAM_NEW_TRAN_CODE: this is the new transport layer code that will be switched
1168 # SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
1169 # SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
1170 # SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
1171 # queue after a bus reset, and the number of milliseconds to
1172 # freeze the device queue after a bus device reset. This
1173 # can be changed at boot and runtime with the
1174 # kern.cam.scsi_delay tunable/sysctl.
1176 options CAM_DEBUG_BUS=-1
1177 options CAM_DEBUG_TARGET=-1
1178 options CAM_DEBUG_LUN=-1
1179 options CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO|CAM_DEBUG_TRACE|CAM_DEBUG_CDB)
1180 options CAM_MAX_HIGHPOWER=4
1181 options SCSI_NO_SENSE_STRINGS
1182 options SCSI_NO_OP_STRINGS
1183 options SCSI_DELAY=5000 # Be pessimistic about Joe SCSI device
1185 # Options for the CAM CDROM driver:
1186 # CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
1187 # CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
1188 # enforced if there is I/O waiting for another LUN
1189 # The compiled in defaults for these variables are 2 and 10 seconds,
1192 # These can also be changed on the fly with the following sysctl variables:
1193 # kern.cam.cd.changer.min_busy_seconds
1194 # kern.cam.cd.changer.max_busy_seconds
1196 options CHANGER_MIN_BUSY_SECONDS=2
1197 options CHANGER_MAX_BUSY_SECONDS=10
1199 # Options for the CAM sequential access driver:
1200 # SA_IO_TIMEOUT: Timeout for read/write/wfm operations, in minutes
1201 # SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
1202 # SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
1203 # SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
1204 # SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
1205 options SA_IO_TIMEOUT=4
1206 options SA_SPACE_TIMEOUT=60
1207 options SA_REWIND_TIMEOUT=(2*60)
1208 options SA_ERASE_TIMEOUT=(4*60)
1209 options SA_1FM_AT_EOD
1211 # Optional timeout for the CAM processor target (pt) device
1212 # This is specified in seconds. The default is 60 seconds.
1213 options SCSI_PT_DEFAULT_TIMEOUT=60
1215 # Optional enable of doing SES passthrough on other devices (e.g., disks)
1217 # Normally disabled because a lot of newer SCSI disks report themselves
1218 # as having SES capabilities, but this can then clot up attempts to build
1219 # build a topology with the SES device that's on the box these drives
1221 options SES_ENABLE_PASSTHROUGH
1224 #####################################################################
1225 # MISCELLANEOUS DEVICES AND OPTIONS
1227 # The `pty' device usually turns out to be ``effectively mandatory'',
1228 # as it is required for `telnetd', `rlogind', `screen', `emacs', and
1229 # `xterm', among others.
1231 device pty #Pseudo ttys
1232 device nmdm #back-to-back tty devices
1233 device md #Memory/malloc disk
1234 device snp #Snoop device - to look at pty/vty/etc..
1235 device ccd #Concatenated disk driver
1236 device firmware #firmware(9) support
1238 # Kernel side iconv library
1241 # Size of the kernel message buffer. Should be N * pagesize.
1242 options MSGBUF_SIZE=40960
1244 # Maximum size of a tty or pty input buffer.
1248 #####################################################################
1249 # HARDWARE DEVICE CONFIGURATION
1251 # For ISA the required hints are listed.
1252 # EISA, MCA, PCI and pccard are self identifying buses, so no hints
1256 # Mandatory devices:
1259 # The keyboard controller; it controls the keyboard and the PS/2 mouse.
1261 hint.atkbdc.0.at="isa"
1262 hint.atkbdc.0.port="0x060"
1266 hint.atkbd.0.at="atkbdc"
1267 hint.atkbd.0.irq="1"
1269 # Options for atkbd:
1270 options ATKBD_DFLT_KEYMAP # specify the built-in keymap
1271 makeoptions ATKBD_DFLT_KEYMAP=jp.106
1273 # These options are valid for other keyboard drivers as well.
1274 options KBD_DISABLE_KEYMAP_LOAD # refuse to load a keymap
1275 options KBD_INSTALL_CDEV # install a CDEV entry in /dev
1277 # `flags' for atkbd:
1278 # 0x01 Force detection of keyboard, else we always assume a keyboard
1279 # 0x02 Don't reset keyboard, useful for some newer ThinkPads
1280 # 0x03 Force detection and avoid reset, might help with certain
1282 # 0x04 Old-style (XT) keyboard support, useful for older ThinkPads
1286 hint.psm.0.at="atkbdc"
1290 options PSM_HOOKRESUME #hook the system resume event, useful
1292 options PSM_RESETAFTERSUSPEND #reset the device at the resume event
1294 # Video card driver for VGA adapters.
1299 # Try the following option if the mouse pointer is not drawn correctly
1300 # or font does not seem to be loaded properly. May cause flicker on
1302 options VGA_ALT_SEQACCESS
1304 # If you can dispense with some vga driver features, you may want to
1305 # use the following options to save some memory.
1306 #options VGA_NO_FONT_LOADING # don't save/load font
1307 #options VGA_NO_MODE_CHANGE # don't change video modes
1309 # Older video cards may require this option for proper operation.
1310 options VGA_SLOW_IOACCESS # do byte-wide i/o's to TS and GDC regs
1312 # The following option probably won't work with the LCD displays.
1313 options VGA_WIDTH90 # support 90 column modes
1315 options FB_DEBUG # Frame buffer debugging
1317 device splash # Splash screen and screen saver support
1319 # Various screen savers.
1332 # The syscons console driver (sco color console compatible).
1335 options MAXCONS=16 # number of virtual consoles
1336 options SC_ALT_MOUSE_IMAGE # simplified mouse cursor in text mode
1337 options SC_DFLT_FONT # compile font in
1338 makeoptions SC_DFLT_FONT=cp850
1339 options SC_DISABLE_KDBKEY # disable `debug' key
1340 options SC_DISABLE_REBOOT # disable reboot key sequence
1341 options SC_HISTORY_SIZE=200 # number of history buffer lines
1342 options SC_MOUSE_CHAR=0x3 # char code for text mode mouse cursor
1343 options SC_PIXEL_MODE # add support for the raster text mode
1345 # The following options will let you change the default colors of syscons.
1346 options SC_NORM_ATTR=(FG_GREEN|BG_BLACK)
1347 options SC_NORM_REV_ATTR=(FG_YELLOW|BG_GREEN)
1348 options SC_KERNEL_CONS_ATTR=(FG_RED|BG_BLACK)
1349 options SC_KERNEL_CONS_REV_ATTR=(FG_BLACK|BG_RED)
1351 # The following options will let you change the default behaviour of
1352 # cut-n-paste feature
1353 options SC_CUT_SPACES2TABS # convert leading spaces into tabs
1354 options SC_CUT_SEPCHARS=\"x09\" # set of characters that delimit words
1355 # (default is single space - \"x20\")
1357 # If you have a two button mouse, you may want to add the following option
1358 # to use the right button of the mouse to paste text.
1359 options SC_TWOBUTTON_MOUSE
1361 # You can selectively disable features in syscons.
1362 options SC_NO_CUTPASTE
1363 options SC_NO_FONT_LOADING
1364 options SC_NO_HISTORY
1365 options SC_NO_SYSMOUSE
1366 options SC_NO_SUSPEND_VTYSWITCH
1369 # 0x80 Put the video card in the VESA 800x600 dots, 16 color mode
1370 # 0x100 Probe for a keyboard device periodically if one is not present
1377 # SCSI host adapters:
1379 # adv: All Narrow SCSI bus AdvanSys controllers.
1380 # adw: Second Generation AdvanSys controllers including the ADV940UW.
1381 # aha: Adaptec 154x/1535/1640
1382 # ahb: Adaptec 174x EISA controllers
1383 # ahc: Adaptec 274x/284x/2910/293x/294x/394x/3950x/3960x/398X/4944/
1384 # 19160x/29160x, aic7770/aic78xx
1385 # ahd: Adaptec 29320/39320 Controllers.
1386 # aic: Adaptec 6260/6360, APA-1460 (PC Card), NEC PC9801-100 (C-BUS)
1387 # amd: Support for the AMD 53C974 SCSI host adapter chip as found on devices
1388 # such as the Tekram DC-390(T).
1389 # bt: Most Buslogic controllers: including BT-445, BT-54x, BT-64x, BT-74x,
1390 # BT-75x, BT-946, BT-948, BT-956, BT-958, SDC3211B, SDC3211F, SDC3222F
1391 # esp: NCR53c9x. Only for SBUS hardware right now.
1392 # isp: Qlogic ISP 1020, 1040 and 1040B PCI SCSI host adapters,
1393 # ISP 1240 Dual Ultra SCSI, ISP 1080 and 1280 (Dual) Ultra2,
1394 # ISP 12160 Ultra3 SCSI,
1395 # Qlogic ISP 2100 and ISP 2200 1Gb Fibre Channel host adapters.
1396 # Qlogic ISP 2300 and ISP 2312 2Gb Fibre Channel host adapters.
1397 # ispfw: Firmware module for Qlogic host adapters
1398 # mpt: LSI-Logic MPT/Fusion 53c1020 or 53c1030 Ultra4
1399 # or FC9x9 Fibre Channel host adapters.
1400 # ncr: NCR 53C810, 53C825 self-contained SCSI host adapters.
1401 # sym: Symbios/Logic 53C8XX family of PCI-SCSI I/O processors:
1402 # 53C810, 53C810A, 53C815, 53C825, 53C825A, 53C860, 53C875,
1403 # 53C876, 53C885, 53C895, 53C895A, 53C896, 53C897, 53C1510D,
1404 # 53C1010-33, 53C1010-66.
1405 # trm: Tekram DC395U/UW/F DC315U adapters.
1409 # Note that the order is important in order for Buslogic ISA/EISA cards to be
1414 hint.bt.0.port="0x330"
1428 hint.isp.0.disable="1"
1430 hint.isp.0.prefer_iomap="1"
1431 hint.isp.0.prefer_memmap="1"
1432 hint.isp.0.fwload_disable="1"
1433 hint.isp.0.ignore_nvram="1"
1434 hint.isp.0.fullduplex="1"
1435 hint.isp.0.topology="lport"
1436 hint.isp.0.topology="nport"
1437 hint.isp.0.topology="lport-only"
1438 hint.isp.0.topology="nport-only"
1439 # we can't get u_int64_t types, nor can we get strings if it's got
1440 # a leading 0x, hence this silly dodge.
1441 hint.isp.0.portwnn="w50000000aaaa0000"
1442 hint.isp.0.nodewnn="w50000000aaaa0001"
1450 hint.wds.0.port="0x350"
1454 # The aic7xxx driver will attempt to use memory mapped I/O for all PCI
1455 # controllers that have it configured only if this option is set. Unfortunately,
1456 # this doesn't work on some motherboards, which prevents it from being the
1458 options AHC_ALLOW_MEMIO
1460 # Dump the contents of the ahc controller configuration PROM.
1461 options AHC_DUMP_EEPROM
1463 # Bitmap of units to enable targetmode operations.
1464 options AHC_TMODE_ENABLE
1466 # Compile in Aic7xxx Debugging code.
1469 # Aic7xxx driver debugging options. See sys/dev/aic7xxx/aic7xxx.h
1470 options AHC_DEBUG_OPTS
1472 # Print register bitfields in debug output. Adds ~128k to driver
1474 options AHC_REG_PRETTY_PRINT
1476 # Compile in aic79xx debugging code.
1479 # Aic79xx driver debugging options. Adds ~215k to driver. See ahd(4).
1480 options AHD_DEBUG_OPTS=0xFFFFFFFF
1482 # Print human-readable register definitions when debugging
1483 options AHD_REG_PRETTY_PRINT
1485 # Bitmap of units to enable targetmode operations.
1486 options AHD_TMODE_ENABLE
1488 # The adw driver will attempt to use memory mapped I/O for all PCI
1489 # controllers that have it configured only if this option is set.
1490 options ADW_ALLOW_MEMIO
1492 # Options used in dev/isp/ (Qlogic SCSI/FC driver).
1494 # ISP_TARGET_MODE - enable target mode operation
1496 options ISP_TARGET_MODE=1
1498 # Options used in dev/sym/ (Symbios SCSI driver).
1499 #options SYM_SETUP_LP_PROBE_MAP #-Low Priority Probe Map (bits)
1500 # Allows the ncr to take precedence
1501 # 1 (1<<0) -> 810a, 860
1502 # 2 (1<<1) -> 825a, 875, 885, 895
1503 # 4 (1<<2) -> 895a, 896, 1510d
1504 #options SYM_SETUP_SCSI_DIFF #-HVD support for 825a, 875, 885
1505 # disabled:0 (default), enabled:1
1506 #options SYM_SETUP_PCI_PARITY #-PCI parity checking
1507 # disabled:0, enabled:1 (default)
1508 #options SYM_SETUP_MAX_LUN #-Number of LUNs supported
1509 # default:8, range:[1..64]
1511 # The 'asr' driver provides support for current DPT/Adaptec SCSI RAID
1512 # controllers (SmartRAID V and VI and later).
1513 # These controllers require the CAM infrastructure.
1517 # The 'dpt' driver provides support for old DPT controllers (http://www.dpt.com/).
1518 # These have hardware RAID-{0,1,5} support, and do multi-initiator I/O.
1519 # The DPT controllers are commonly re-licensed under other brand-names -
1520 # some controllers by Olivetti, Dec, HP, AT&T, SNI, AST, Alphatronic, NEC and
1521 # Compaq are actually DPT controllers.
1523 # See src/sys/dev/dpt for debugging and other subtle options.
1524 # DPT_MEASURE_PERFORMANCE Enables a set of (semi)invasive metrics. Various
1525 # instruments are enabled. The tools in
1526 # /usr/sbin/dpt_* assume these to be enabled.
1527 # DPT_HANDLE_TIMEOUTS Normally device timeouts are handled by the DPT.
1528 # If you ant the driver to handle timeouts, enable
1529 # this option. If your system is very busy, this
1530 # option will create more trouble than solve.
1531 # DPT_TIMEOUT_FACTOR Used to compute the excessive amount of time to
1532 # wait when timing out with the above option.
1533 # DPT_DEBUG_xxxx These are controllable from sys/dev/dpt/dpt.h
1534 # DPT_LOST_IRQ When enabled, will try, once per second, to catch
1535 # any interrupt that got lost. Seems to help in some
1536 # DPT-firmware/Motherboard combinations. Minimal
1537 # cost, great benefit.
1538 # DPT_RESET_HBA Make "reset" actually reset the controller
1539 # instead of fudging it. Only enable this if you
1540 # are 100% certain you need it.
1545 #!CAM# options DPT_MEASURE_PERFORMANCE
1546 #!CAM# options DPT_HANDLE_TIMEOUTS
1547 options DPT_TIMEOUT_FACTOR=4
1548 options DPT_LOST_IRQ
1549 options DPT_RESET_HBA
1552 # Compaq "CISS" RAID controllers (SmartRAID 5* series)
1553 # These controllers have a SCSI-like interface, and require the
1554 # CAM infrastructure.
1559 # Intel Integrated RAID controllers.
1560 # This driver was developed and is maintained by Intel. Contacts
1561 # at Intel for this driver are
1562 # "Kannanthanam, Boji T" <boji.t.kannanthanam@intel.com> and
1563 # "Leubner, Achim" <achim.leubner@intel.com>.
1568 # Mylex AcceleRAID and eXtremeRAID controllers with v6 and later
1569 # firmware. These controllers have a SCSI-like interface, and require
1570 # the CAM infrastructure.
1575 # Compaq Smart RAID, Mylex DAC960 and AMI MegaRAID controllers. Only
1576 # one entry is needed; the code will find and configure all supported
1579 device ida # Compaq Smart RAID
1580 device mlx # Mylex DAC960
1581 device amr # AMI MegaRAID
1582 device mfi # LSI MegaRAID SAS
1583 device mfip # LSI MegaRAID SAS passthrough, requires CAM
1589 device twe # 3ware ATA RAID
1592 # The 'ATA' driver supports all ATA and ATAPI devices, including PC Card
1593 # devices. You only need one "device ata" for it to find all
1594 # PCI and PC Card ATA/ATAPI devices on modern machines.
1596 device atadisk # ATA disk drives
1597 device ataraid # ATA RAID drives
1598 device atapicd # ATAPI CDROM drives
1599 device atapifd # ATAPI floppy drives
1600 device atapist # ATAPI tape drives
1601 device atapicam # emulate ATAPI devices as SCSI ditto via CAM
1602 # needs CAM to be present (scbus & pass)
1604 # For older non-PCI, non-PnPBIOS systems, these are the hints lines to add:
1606 hint.ata.0.port="0x1f0"
1609 hint.ata.1.port="0x170"
1613 # The following options are valid on the ATA driver:
1615 # ATA_STATIC_ID: controller numbering is static ie depends on location
1616 # else the device numbers are dynamically allocated.
1618 options ATA_STATIC_ID
1621 # Standard floppy disk controllers and floppy tapes, supports
1622 # the Y-E DATA External FDD (PC Card)
1626 hint.fdc.0.port="0x3F0"
1630 # FDC_DEBUG enables floppy debugging. Since the debug output is huge, you
1631 # gotta turn it actually on by setting the variable fd_debug with DDB,
1635 # Activate this line if you happen to have an Insight floppy tape.
1636 # Probing them proved to be dangerous for people with floppy disks only,
1637 # so it's "hidden" behind a flag:
1638 #hint.fdc.0.flags="1"
1640 # Specify floppy devices
1647 # sio: serial ports (see sio(4)), including support for various
1648 # PC Card devices, such as Modem and NICs (see etc/defaults/pccard.conf)
1652 hint.sio.0.port="0x3F8"
1653 hint.sio.0.flags="0x10"
1657 options COM_ESP # Code for Hayes ESP.
1658 options COM_MULTIPORT # Code for some cards with shared IRQs.
1659 options CONSPEED=115200 # Speed for serial console
1662 # `flags' specific to sio(4). See below for flags used by both sio(4) and
1664 # 0x20 force this unit to be the console (unless there is another
1665 # higher priority console). This replaces the COMCONSOLE option.
1666 # 0x40 reserve this unit for low level console operations. Do not
1667 # access the device in any normal way.
1669 # 0x1 disable probing of this device. Used to prevent your modem
1670 # from being attached as a PnP modem.
1671 # Other flags for sio that aren't documented in the man page.
1672 # 0x20000 enable hardware RTS/CTS and larger FIFOs. Only works for
1673 # ST16650A-compatible UARTs.
1676 # uart: newbusified driver for serial interfaces. It consolidates the sio(4),
1677 # sab(4) and zs(4) drivers.
1681 # Options for uart(4)
1682 options UART_PPS_ON_CTS # Do time pulse capturing using CTS
1685 # The following hint should only be used for pure ISA devices. It is not
1686 # needed otherwise. Use of hints is strongly discouraged.
1687 hint.uart.0.at="isa"
1689 # The following 3 hints are used when the UART is a system device (i.e., a
1690 # console or debug port), but only on platforms that don't have any other
1691 # means to pass the information to the kernel. The unit number of the hint
1692 # is only used to bundle the hints together. There is no relation to the
1693 # unit number of the probed UART.
1694 hint.uart.0.port="0x3f8"
1695 hint.uart.0.flags="0x10"
1696 hint.uart.0.baud="115200"
1698 # `flags' for serial drivers that support consoles like sio(4) and uart(4):
1699 # 0x10 enable console support for this unit. Other console flags
1700 # (if applicable) are ignored unless this is set. Enabling
1701 # console support does not make the unit the preferred console.
1702 # Boot with -h or set boot_serial=YES in the loader. For sio(4)
1703 # specifically, the 0x20 flag can also be set (see above).
1704 # Currently, at most one unit can have console support; the
1705 # first one (in config file order) with this flag set is
1706 # preferred. Setting this flag for sio0 gives the old behaviour.
1707 # 0x80 use this port for serial line gdb support in ddb. Also known
1711 # Options for serial drivers that support consoles:
1712 options BREAK_TO_DEBUGGER # A BREAK on a serial console goes to
1713 # ddb, if available.
1715 # Solaris implements a new BREAK which is initiated by a character
1716 # sequence CR ~ ^b which is similar to a familiar pattern used on
1717 # Sun servers by the Remote Console.
1718 options ALT_BREAK_TO_DEBUGGER
1720 # PCI Universal Communications driver
1721 # Supports various single and multi port PCI serial cards. Maybe later
1722 # also the parallel ports on combination serial/parallel cards. New cards
1723 # can be added in src/sys/dev/puc/pucdata.c.
1725 # If the PUC_FASTINTR option is used the driver will try to use fast
1726 # interrupts. The card must then be the only user of that interrupt.
1727 # Interrupts cannot be shared when using PUC_FASTINTR.
1729 options PUC_FASTINTR
1732 # Network interfaces:
1734 # MII bus support is required for some PCI 10/100 ethernet NICs,
1735 # namely those which use MII-compliant transceivers or implement
1736 # transceiver control interfaces that operate like an MII. Adding
1737 # "device miibus" to the kernel config pulls in support for
1738 # the generic miibus API and all of the PHY drivers, including a
1739 # generic one for PHYs that aren't specifically handled by an
1740 # individual driver.
1743 # an: Aironet 4500/4800 802.11 wireless adapters. Supports the PCMCIA,
1744 # PCI and ISA varieties.
1745 # awi: Support for IEEE 802.11 PC Card devices using the AMD Am79C930 and
1746 # Harris (Intersil) Chipset with PCnetMobile firmware by AMD.
1747 # bge: Support for gigabit ethernet adapters based on the Broadcom
1748 # BCM570x family of controllers, including the 3Com 3c996-T,
1749 # the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41, and
1750 # the embedded gigE NICs on Dell PowerEdge 2550 servers.
1751 # cm: Arcnet SMC COM90c26 / SMC COM90c56
1752 # (and SMC COM90c66 in '56 compatibility mode) adapters.
1753 # cnw: Xircom CNW/Netware Airsurfer PC Card adapter
1754 # cs: IBM Etherjet and other Crystal Semi CS89x0-based adapters
1755 # dc: Support for PCI fast ethernet adapters based on the DEC/Intel 21143
1756 # and various workalikes including:
1757 # the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
1758 # AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
1759 # 82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
1760 # and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
1761 # replaces the old al, ax, dm, pn and mx drivers. List of brands:
1762 # Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110,
1763 # SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX,
1764 # LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
1766 # de: Digital Equipment DC21040
1767 # em: Intel Pro/1000 Gigabit Ethernet 82542, 82543, 82544 based adapters.
1768 # ep: 3Com 3C509, 3C529, 3C556, 3C562D, 3C563D, 3C572, 3C574X, 3C579, 3C589
1769 # and PC Card devices using these chipsets.
1770 # ex: Intel EtherExpress Pro/10 and other i82595-based adapters,
1771 # Olicom Ethernet PC Card devices.
1772 # fe: Fujitsu MB86960A/MB86965A Ethernet
1773 # fea: DEC DEFEA EISA FDDI adapter
1774 # fpa: Support for the Digital DEFPA PCI FDDI. `device fddi' is also needed.
1775 # fxp: Intel EtherExpress Pro/100B
1776 # (hint of prefer_iomap can be done to prefer I/O instead of Mem mapping)
1777 # gem: Apple GMAC/Sun ERI/Sun GEM
1778 # hme: Sun HME (Happy Meal Ethernet)
1779 # jme: JMicron JMC260 Fast Ethernet/JMC250 Gigabit Ethernet based adapters.
1780 # le: AMD Am7900 LANCE and Am79C9xx PCnet
1781 # lge: Support for PCI gigabit ethernet adapters based on the Level 1
1782 # LXT1001 NetCellerator chipset. This includes the D-Link DGE-500SX,
1783 # SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
1784 # msk: Support for gigabit ethernet adapters based on the Marvell/SysKonnect
1785 # Yukon II Gigabit controllers, including 88E8021, 88E8022, 88E8061,
1786 # 88E8062, 88E8035, 88E8036, 88E8038, 88E8050, 88E8052, 88E8053,
1787 # 88E8055, 88E8056 and D-Link 560T/550SX.
1788 # my: Myson Fast Ethernet (MTD80X, MTD89X)
1789 # nge: Support for PCI gigabit ethernet adapters based on the National
1790 # Semiconductor DP83820 and DP83821 chipset. This includes the
1791 # SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante FriendlyNet
1792 # GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the LinkSys
1793 # EG1032 and EG1064, the Surecom EP-320G-TX and the Netgear GA622T.
1794 # pcn: Support for PCI fast ethernet adapters based on the AMD Am79c97x
1795 # chipsets, including the PCnet/FAST, PCnet/FAST+, PCnet/PRO and
1796 # PCnet/Home. These were previously handled by the lnc driver (and
1797 # still will be if you leave this driver out of the kernel).
1798 # re: RealTek 8139C+/8169/816xS/811xS/8101E PCI/PCIe Ethernet adapter
1799 # rl: Support for PCI fast ethernet adapters based on the RealTek 8129/8139
1800 # chipset. Note that the RealTek driver defaults to using programmed
1801 # I/O to do register accesses because memory mapped mode seems to cause
1802 # severe lockups on SMP hardware. This driver also supports the
1803 # Accton EN1207D `Cheetah' adapter, which uses a chip called
1804 # the MPX 5030/5038, which is either a RealTek in disguise or a
1805 # RealTek workalike. Note that the D-Link DFE-530TX+ uses the RealTek
1806 # chipset and is supported by this driver, not the 'vr' driver.
1807 # sf: Support for Adaptec Duralink PCI fast ethernet adapters based on the
1808 # Adaptec AIC-6915 "starfire" controller.
1809 # This includes dual and quad port cards, as well as one 100baseFX card.
1810 # Most of these are 64-bit PCI devices, except for one single port
1811 # card which is 32-bit.
1812 # sis: Support for NICs based on the Silicon Integrated Systems SiS 900,
1813 # SiS 7016 and NS DP83815 PCI fast ethernet controller chips.
1814 # sbsh: Support for Granch SBNI16 SHDSL modem PCI adapters
1815 # sk: Support for the SysKonnect SK-984x series PCI gigabit ethernet NICs.
1816 # This includes the SK-9841 and SK-9842 single port cards (single mode
1817 # and multimode fiber) and the SK-9843 and SK-9844 dual port cards
1818 # (also single mode and multimode).
1819 # The driver will autodetect the number of ports on the card and
1820 # attach each one as a separate network interface.
1821 # sn: Support for ISA and PC Card Ethernet devices using the
1822 # SMC91C90/92/94/95 chips.
1823 # ste: Sundance Technologies ST201 PCI fast ethernet controller, includes
1824 # the D-Link DFE-550TX.
1825 # stge: Support for gigabit ethernet adapters based on the Sundance/Tamarack
1826 # TC9021 family of controllers, including the Sundance ST2021/ST2023,
1827 # the Sundance/Tamarack TC9021, the D-Link DL-4000 and ASUS NX1101.
1828 # ti: Support for PCI gigabit ethernet NICs based on the Alteon Networks
1829 # Tigon 1 and Tigon 2 chipsets. This includes the Alteon AceNIC, the
1830 # 3Com 3c985, the Netgear GA620 and various others. Note that you will
1831 # probably want to bump up kern.ipc.nmbclusters a lot to use this driver.
1832 # tl: Support for the Texas Instruments TNETE100 series 'ThunderLAN'
1833 # cards and integrated ethernet controllers. This includes several
1834 # Compaq Netelligent 10/100 cards and the built-in ethernet controllers
1835 # in several Compaq Prosignia, Proliant and Deskpro systems. It also
1836 # supports several Olicom 10Mbps and 10/100 boards.
1837 # tx: SMC 9432 TX, BTX and FTX cards. (SMC EtherPower II series)
1838 # txp: Support for 3Com 3cR990 cards with the "Typhoon" chipset
1839 # vr: Support for various fast ethernet adapters based on the VIA
1840 # Technologies VT3043 `Rhine I' and VT86C100A `Rhine II' chips,
1841 # including the D-Link DFE530TX (see 'rl' for DFE530TX+), the Hawking
1842 # Technologies PN102TX, and the AOpen/Acer ALN-320.
1843 # vx: 3Com 3C590 and 3C595
1844 # wb: Support for fast ethernet adapters based on the Winbond W89C840F chip.
1845 # Note: this is not the same as the Winbond W89C940F, which is a
1847 # wi: Lucent WaveLAN/IEEE 802.11 PCMCIA adapters. Note: this supports both
1848 # the PCMCIA and ISA cards: the ISA card is really a PCMCIA to ISA
1849 # bridge with a PCMCIA adapter plugged into it.
1850 # xe: Xircom/Intel EtherExpress Pro100/16 PC Card ethernet controller,
1851 # Accton Fast EtherCard-16, Compaq Netelligent 10/100 PC Card,
1852 # Toshiba 10/100 Ethernet PC Card, Xircom 16-bit Ethernet + Modem 56
1853 # xl: Support for the 3Com 3c900, 3c905, 3c905B and 3c905C (Fast)
1854 # Etherlink XL cards and integrated controllers. This includes the
1855 # integrated 3c905B-TX chips in certain Dell Optiplex and Dell
1856 # Precision desktop machines and the integrated 3c905-TX chips
1857 # in Dell Latitude laptop docking stations.
1858 # Also supported: 3Com 3c980(C)-TX, 3Com 3cSOHO100-TX, 3Com 3c450-TX
1860 # Order for ISA/EISA devices is important here
1864 hint.cm.0.port="0x2e0"
1866 hint.cm.0.maddr="0xdc000"
1869 hint.cs.0.port="0x300"
1874 hint.fe.0.port="0x300"
1878 hint.sn.0.port="0x300"
1886 # PCI Ethernet NICs that use the common MII bus controller code.
1887 device dc # DEC/Intel 21143 and various workalikes
1888 device fxp # Intel EtherExpress PRO/100B (82557, 82558)
1889 hint.fxp.0.prefer_iomap="0"
1890 device gem # Apple GMAC/Sun ERI/Sun GEM
1891 device hme # Sun HME (Happy Meal Ethernet)
1892 device jme # JMicron JMC250 Gigabit/JMC260 Fast Ethernet
1893 device msk # Marvell/SysKonnect Yukon II Gigabit Ethernet
1894 device my # Myson Fast Ethernet (MTD80X, MTD89X)
1895 device re # RealTek 8139C+/8169/8169S/8110S
1896 device rl # RealTek 8129/8139
1897 device pcn # AMD Am79C97x PCI 10/100 NICs
1898 device sf # Adaptec AIC-6915 (``Starfire'')
1899 device sbsh # Granch SBNI16 SHDSL modem
1900 device sis # Silicon Integrated Systems SiS 900/SiS 7016
1901 device ste # Sundance ST201 (D-Link DFE-550TX)
1902 device stge # Sundance/Tamarack TC9021 gigabit Ethernet
1903 device tl # Texas Instruments ThunderLAN
1904 device tx # SMC EtherPower II (83c170 ``EPIC'')
1905 device vr # VIA Rhine, Rhine II
1906 device wb # Winbond W89C840F
1907 device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
1909 # PCI Ethernet NICs.
1910 device de # DEC/Intel DC21x4x (``Tulip'')
1911 device le # AMD Am7900 LANCE and Am79C9xx PCnet
1912 device txp # 3Com 3cR990 (``Typhoon'')
1913 device vx # 3Com 3c590, 3c595 (``Vortex'')
1915 # PCI Gigabit & FDDI NICs.
1917 device cxgb # Chelsio T3 10 Gigabit Ethernet
1924 # Use "private" jumbo buffers allocated exclusively for the ti(4) driver.
1925 # This option is incompatible with the TI_JUMBO_HDRSPLIT option below.
1926 #options TI_PRIVATE_JUMBOS
1927 # Turn on the header splitting option for the ti(4) driver firmware. This
1928 # only works for Tigon II chips, and has no effect for Tigon I chips.
1929 options TI_JUMBO_HDRSPLIT
1931 # These two options allow manipulating the mbuf cluster size and mbuf size,
1932 # respectively. Be very careful with NIC driver modules when changing
1933 # these from their default values, because that can potentially cause a
1934 # mismatch between the mbuf size assumed by the kernel and the mbuf size
1935 # assumed by a module. The only driver that currently has the ability to
1936 # detect a mismatch is ti(4).
1937 options MCLSHIFT=12 # mbuf cluster shift in bits, 12 == 4KB
1938 options MSIZE=512 # mbuf size in bytes
1941 # ATM related options (Cranor version)
1942 # (note: this driver cannot be used with the HARP ATM stack)
1944 # The `en' device provides support for Efficient Networks (ENI)
1945 # ENI-155 PCI midway cards, and the Adaptec 155Mbps PCI ATM cards (ANA-59x0).
1947 # The `hatm' device provides support for Fore/Marconi HE155 and HE622
1950 # The `fatm' device provides support for Fore PCA200E ATM PCI cards.
1952 # The `patm' device provides support for IDT77252 based cards like
1953 # ProSum's ProATM-155 and ProATM-25 and IDT's evaluation boards.
1955 # atm device provides generic atm functions and is required for
1957 # NATM enables the netnatm protocol family that can be used to
1960 # utopia provides the access to the ATM PHY chips and is required for en,
1963 # the current driver supports only PVC operations (no atm-arp, no multicast).
1964 # for more details, please read the original documents at
1965 # http://www.ccrc.wustl.edu/pub/chuck/tech/bsdatm/bsdatm.html
1969 device fatm #Fore PCA200E
1970 device hatm #Fore/Marconi HE155/622
1971 device patm #IDT77252 cards (ProATM and IDT)
1972 device utopia #ATM PHY driver
1973 options NATM #native ATM
1975 options LIBMBPOOL #needed by patm, iatm
1980 # sound: The generic sound driver.
1986 # snd_*: Device-specific drivers.
1988 # The flags of the device tells the device a bit more info about the
1989 # device that normally is obtained through the PnP interface.
1990 # bit 2..0 secondary DMA channel;
1991 # bit 4 set if the board uses two dma channels;
1992 # bit 15..8 board type, overrides autodetection; leave it
1993 # zero if don't know what to put in (and you don't,
1994 # since this is unsupported at the moment...).
1996 # snd_ad1816: Analog Devices AD1816 ISA PnP/non-PnP.
1997 # snd_als4000: Avance Logic ALS4000 PCI.
1998 # snd_atiixp: ATI IXP 200/300/400 PCI.
1999 # snd_au88x0 Aureal Vortex 1/2/Advantage PCI. This driver
2000 # lacks support for playback and recording.
2001 # snd_audiocs: Crystal Semiconductor CS4231 SBus/EBus. Only
2003 # snd_cmi: CMedia CMI8338/CMI8738 PCI.
2004 # snd_cs4281: Crystal Semiconductor CS4281 PCI.
2005 # snd_csa: Crystal Semiconductor CS461x/428x PCI. (except
2007 # snd_ds1: Yamaha DS-1 PCI.
2008 # snd_emu10k1: Creative EMU10K1 PCI and EMU10K2 (Audigy) PCI.
2009 # snd_envy24: VIA Envy24 and compatible, needs snd_spicds.
2010 # snd_envy24ht: VIA Envy24HT and compatible, needs snd_spicds.
2011 # snd_es137x: Ensoniq AudioPCI ES137x PCI.
2012 # snd_ess: Ensoniq ESS ISA PnP/non-PnP, to be used in
2013 # conjunction with snd_sbc.
2014 # snd_fm801: Forte Media FM801 PCI.
2015 # snd_gusc: Gravis UltraSound ISA PnP/non-PnP.
2016 # snd_hda: Intel High Definition Audio (Controller) and
2018 # snd_ich: Intel ICH PCI and some more audio controllers
2019 # embedded in a chipset, for example nVidia
2020 # nForce controllers.
2021 # snd_maestro: ESS Technology Maestro-1/2x PCI.
2022 # snd_maestro3: ESS Technology Maestro-3/Allegro PCI.
2023 # snd_mss: Microsoft Sound System ISA PnP/non-PnP.
2024 # snd_neomagic: Neomagic 256 AV/ZX PCI.
2025 # snd_sb16: Creative SoundBlaster16, to be used in
2026 # conjuction with snd_sbc.
2027 # snd_sb8: Creative SoundBlaster (pre-16), to be used in
2028 # conjuction with snd_sbc.
2029 # snd_sbc: Creative SoundBlaster ISA PnP/non-PnP.
2030 # Supports ESS and Avance ISA chips as well.
2031 # snd_solo: ESS Solo-1x PCI.
2032 # snd_t4dwave: Trident 4DWave DX/NX PCI, Sis 7018 PCI and Acer Labs
2034 # snd_via8233: VIA VT8233x PCI.
2035 # snd_via82c686: VIA VT82C686A PCI.
2036 # snd_vibes: S3 Sonicvibes PCI.
2037 # snd_uaudio: USB audio.
2068 device snd_via82c686
2072 # For non-pnp sound cards:
2076 hint.pcm.0.flags="0x0"
2078 hint.sbc.0.port="0x220"
2081 hint.sbc.0.flags="0x15"
2082 hint.gusc.0.at="isa"
2083 hint.gusc.0.port="0x220"
2086 hint.gusc.0.flags="0x13"
2089 # IEEE-488 hardware:
2090 # pcii: PCIIA cards (uPD7210 based isa cards)
2092 hint.pcii.0.at="isa"
2093 hint.pcii.0.port="0x2e1"
2098 # Miscellaneous hardware:
2100 # scd: Sony CD-ROM using proprietary (non-ATAPI) interface
2101 # mcd: Mitsumi CD-ROM using proprietary (non-ATAPI) interface
2102 # bktr: Brooktree bt848/848a/849a/878/879 video capture and TV Tuner board
2103 # cy: Cyclades serial driver
2104 # joy: joystick (including IO DATA PCJOY PC Card joystick)
2105 # rc: RISCom/8 multiport card
2106 # rp: Comtrol Rocketport(ISA/PCI) - single card
2107 # si: Specialix SI/XIO 4-32 port terminal multiplexor
2108 # nmdm: nullmodem terminal driver (see nmdm(4))
2110 # Notes on the Comtrol Rocketport driver:
2112 # The exact values used for rp0 depend on how many boards you have
2113 # in the system. The manufacturer's sample configs are listed as:
2115 # device rp # core driver support
2117 # Comtrol Rocketport ISA single card
2118 # hint.rp.0.at="isa"
2119 # hint.rp.0.port="0x280"
2121 # If instead you have two ISA cards, one installed at 0x100 and the
2122 # second installed at 0x180, then you should add the following to
2123 # your kernel probe hints:
2124 # hint.rp.0.at="isa"
2125 # hint.rp.0.port="0x100"
2126 # hint.rp.1.at="isa"
2127 # hint.rp.1.port="0x180"
2129 # For 4 ISA cards, it might be something like this:
2130 # hint.rp.0.at="isa"
2131 # hint.rp.0.port="0x180"
2132 # hint.rp.1.at="isa"
2133 # hint.rp.1.port="0x100"
2134 # hint.rp.2.at="isa"
2135 # hint.rp.2.port="0x340"
2136 # hint.rp.3.at="isa"
2137 # hint.rp.3.port="0x240"
2139 # For PCI cards, you need no hints.
2144 hint.mcd.0.port="0x300"
2145 # for the Sony CDU31/33A CDROM
2148 hint.scd.0.port="0x230"
2149 device joy # PnP aware, hints for nonpnp only
2151 hint.joy.0.port="0x201"
2154 hint.rc.0.port="0x220"
2158 hint.rp.0.port="0x280"
2162 hint.si.0.maddr="0xd0000"
2167 # The 'bktr' device is a PCI video capture device using the Brooktree
2168 # bt848/bt848a/bt849a/bt878/bt879 chipset. When used with a TV Tuner it forms a
2169 # TV card, e.g. Miro PC/TV, Hauppauge WinCast/TV WinTV, VideoLogic Captivator,
2170 # Intel Smart Video III, AverMedia, IMS Turbo, FlyVideo.
2172 # options OVERRIDE_CARD=xxx
2173 # options OVERRIDE_TUNER=xxx
2174 # options OVERRIDE_MSP=1
2175 # options OVERRIDE_DBX=1
2176 # These options can be used to override the auto detection
2177 # The current values for xxx are found in src/sys/dev/bktr/bktr_card.h
2178 # Using sysctl(8) run-time overrides on a per-card basis can be made
2180 # options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
2182 # options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
2183 # Specifies the default video capture mode.
2184 # This is required for Dual Crystal (28&35Mhz) boards where PAL is used
2185 # to prevent hangs during initialisation, e.g. VideoLogic Captivator PCI.
2187 # options BKTR_USE_PLL
2188 # This is required for PAL or SECAM boards with a 28Mhz crystal and no 35Mhz
2189 # crystal, e.g. some new Bt878 cards.
2191 # options BKTR_GPIO_ACCESS
2192 # This enable IOCTLs which give user level access to the GPIO port.
2194 # options BKTR_NO_MSP_RESET
2195 # Prevents the MSP34xx reset. Good if you initialise the MSP in another OS first
2197 # options BKTR_430_FX_MODE
2198 # Switch Bt878/879 cards into Intel 430FX chipset compatibility mode.
2200 # options BKTR_SIS_VIA_MODE
2201 # Switch Bt878/879 cards into SIS/VIA chipset compatibility mode which is
2202 # needed for some old SiS and VIA chipset motherboards.
2203 # This also allows Bt878/879 chips to work on old OPTi (<1997) chipset
2204 # motherboards and motherboards with bad or incomplete PCI 2.1 support.
2205 # As a rough guess, old = before 1998
2207 # options BKTR_NEW_MSP34XX_DRIVER
2208 # Use new, more complete initialization scheme for the msp34* soundchip.
2209 # Should fix stereo autodetection if the old driver does only output
2213 # options BKTR_USE_FREEBSD_SMBUS
2214 # Compile with FreeBSD SMBus implementation
2216 # Brooktree driver has been ported to the new I2C framework. Thus,
2217 # you'll need to have the following 3 lines in the kernel config.
2222 # The iic and smb devices are only needed if you want to control other
2223 # I2C slaves connected to the external connector of some cards.
2228 # PC Card/PCMCIA and Cardbus
2231 # pccbb: pci/cardbus bridge implementing YENTA interface
2232 # pccard: pccard slots
2233 # cardbus: cardbus slots
2241 # System Management Bus support is provided by the 'smbus' device.
2242 # Access to the SMBus device is via the 'smb' device (/dev/smb*),
2243 # which is a child of the 'smbus' device.
2245 # Supported devices:
2246 # smb standard I/O through /dev/smb*
2248 # Supported SMB interfaces:
2249 # iicsmb I2C to SMB bridge with any iicbus interface
2250 # bktr brooktree848 I2C hardware interface
2251 # intpm Intel PIIX4 (82371AB, 82443MX) Power Management Unit
2252 # alpm Acer Aladdin-IV/V/Pro2 Power Management Unit
2253 # ichsmb Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
2254 # viapm VIA VT82C586B/596B/686A and VT8233 Power Management Unit
2255 # amdpm AMD 756 Power Management Unit
2256 # amdsmb AMD 8111 SMBus 2.0 Controller
2257 # nfpm NVIDIA nForce Power Management Unit
2258 # nfsmb NVIDIA nForce2/3/4 MCP SMBus 2.0 Controller
2260 device smbus # Bus support, required for smb below.
2276 # Philips i2c bus support is provided by the `iicbus' device.
2278 # Supported devices:
2279 # ic i2c network interface
2280 # iic i2c standard io
2281 # iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
2283 # Supported interfaces:
2284 # bktr brooktree848 I2C software interface
2287 # iicbb generic I2C bit-banging code (needed by lpbb, bktr)
2289 device iicbus # Bus support, required for ic/iic/iicsmb below.
2294 device iicsmb # smb over i2c bridge
2298 # Parallel port bus support is provided by the `ppbus' device.
2299 # Multiple devices may be attached to the parallel port, devices
2300 # are automatically probed and attached when found.
2302 # Supported devices:
2303 # vpo Iomega Zip Drive
2304 # Requires SCSI disk support ('scbus' and 'da'), best
2305 # performance is achieved with ports in EPP 1.9 mode.
2306 # lpt Parallel Printer
2307 # plip Parallel network interface
2308 # ppi General-purpose I/O ("Geek Port") + IEEE1284 I/O
2309 # pps Pulse per second Timing Interface
2310 # lpbb Philips official parallel port I2C bit-banging interface
2312 # Supported interfaces:
2313 # ppc ISA-bus parallel port interfaces.
2316 options PPC_PROBE_CHIPSET # Enable chipset specific detection
2317 # (see flags in ppc(4))
2318 options DEBUG_1284 # IEEE1284 signaling protocol debug
2319 options PERIPH_1284 # Makes your computer act as an IEEE1284
2320 # compliant peripheral
2321 options DONTPROBE_1284 # Avoid boot detection of PnP parallel devices
2322 options VP0_DEBUG # ZIP/ZIP+ debug
2323 options LPT_DEBUG # Printer driver debug
2324 options PPC_DEBUG # Parallel chipset level debug
2325 options PLIP_DEBUG # Parallel network IP interface debug
2326 options PCFCLOCK_VERBOSE # Verbose pcfclock driver
2327 options PCFCLOCK_MAX_RETRIES=5 # Maximum read tries (default 10)
2341 # Kernel BOOTP support
2343 options BOOTP # Use BOOTP to obtain IP address/hostname
2344 # Requires NFSCLIENT and NFS_ROOT
2345 options BOOTP_NFSROOT # NFS mount root filesystem using BOOTP info
2346 options BOOTP_NFSV3 # Use NFS v3 to NFS mount root
2347 options BOOTP_COMPAT # Workaround for broken bootp daemons.
2348 options BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
2351 # Add software watchdog routines.
2356 # Disable swapping of stack pages. This option removes all
2357 # code which actually performs swapping, so it's not possible to turn
2358 # it back on at run-time.
2360 # This is sometimes usable for systems which don't have any swap space
2361 # (see also sysctls "vm.defer_swapspace_pageouts" and
2362 # "vm.disable_swapspace_pageouts")
2364 #options NO_SWAPPING
2366 # Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
2367 # for sendfile(2) that are used to map file VM pages, and normally
2368 # default to a quantity that is roughly 16*MAXUSERS+512. You would
2369 # typically want about 4 of these for each simultaneous file send.
2371 options NSFBUFS=1024
2374 # Enable extra debugging code for locks. This stores the filename and
2375 # line of whatever acquired the lock in the lock itself, and change a
2376 # number of function calls to pass around the relevant data. This is
2377 # not at all useful unless you are debugging lock code. Also note
2378 # that it is likely to break e.g. fstat(1) unless you recompile your
2379 # userland with -DDEBUG_LOCKS as well.
2384 #####################################################################
2392 # General USB code (mandatory for USB)
2395 # USB Double Bulk Pipe devices
2399 # Generic USB device driver
2401 # Human Interface Device (anything with buttons and dials)
2407 # USB Iomega Zip 100 Drive (Requires scbus and da)
2409 # USB support for Belkin F5U109 and Magic Control Technology serial adapters
2415 # Diamond Rio 500 Mp3 player
2420 # USB serial support
2422 # USB support for Arkmicro Technologies ARK3116 based serial adapters
2424 # USB support for Belkin F5U103 and compatible serial adapters
2426 # USB support for BWCT console serial adapters
2428 # USB support for serial adapters based on the FT8U100AX and FT8U232AM
2430 # USB support for Prolific PL-2303 serial adapters
2432 # USB Visor and Palm devices
2434 # USB serial support for DDI pocket's PHS
2437 # ADMtek USB ethernet. Supports the LinkSys USB100TX,
2438 # the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
2439 # and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
2443 # ASIX Electronics AX88172 USB 2.0 ethernet driver. Used in the
2444 # LinkSys USB200M and various other adapters.
2449 # Devices which communicate using Ethernet over USB, particularly
2450 # Communication Device Class (CDC) Ethernet specification. Supports
2451 # Sharp Zaurus PDAs, some DOCSIS cable modems and so on.
2454 # CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
2455 # and Netmate II, and the Belkin F5U111.
2458 # Kawasaki LSI ethernet. Supports the LinkSys USB10T,
2459 # Entrega USB-NET-E45, Peracom Ethernet Adapter, the
2460 # 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
2461 # the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
2462 # and 2104USB, and the Corega USB-T.
2465 # RealTek RTL8150 USB to fast ethernet. Supports the Melco LUA-KTX
2466 # and the GREEN HOUSE GH-USB100B.
2469 # Davicom DM9601E USB to fast ethernet. Supports the Corega FEther USB-TXC.
2473 # debugging options for the USB subsystem
2478 options UKBD_DFLT_KEYMAP # specify the built-in keymap
2479 makeoptions UKBD_DFLT_KEYMAP=it.iso
2481 # options for uplcom:
2482 options UPLCOM_INTR_INTERVAL=100 # interrupt pipe interval
2485 # options for uvscom:
2486 options UVSCOM_DEFAULT_OPKTSIZE=8 # default output packet size
2487 options UVSCOM_INTR_INTERVAL=100 # interrupt pipe interval
2490 #####################################################################
2493 device firewire # FireWire bus code
2494 device sbp # SCSI over Firewire (Requires scbus and da)
2495 device sbp_targ # SBP-2 Target mode (Requires scbus and targ)
2496 device fwe # Ethernet over FireWire (non-standard!)
2497 device fwip # IP over FireWire (rfc2734 and rfc3146)
2499 #####################################################################
2500 # dcons support (Dumb Console Device)
2502 device dcons # dumb console driver
2503 device dcons_crom # FireWire attachment
2504 options DCONS_BUF_SIZE=16384 # buffer size
2505 options DCONS_POLL_HZ=100 # polling rate
2506 options DCONS_FORCE_CONSOLE=0 # force to be the primary console
2507 options DCONS_FORCE_GDB=1 # force to be the gdb device
2509 #####################################################################
2512 # This is a port of the openbsd crypto framework. Include this when
2513 # configuring FAST_IPSEC and when you have a h/w crypto device to accelerate
2514 # user applications that link to openssl.
2516 # Drivers are ports from openbsd with some simple enhancements that have
2517 # been fed back to openbsd.
2519 device crypto # core crypto support
2520 device cryptodev # /dev/crypto for access to h/w
2522 device rndtest # FIPS 140-2 entropy tester
2524 device hifn # Hifn 7951, 7781, etc.
2525 options HIFN_DEBUG # enable debugging support: hw.hifn.debug
2526 options HIFN_RNDTEST # enable rndtest support
2528 device ubsec # Broadcom 5501, 5601, 58xx
2529 options UBSEC_DEBUG # enable debugging support: hw.ubsec.debug
2530 options UBSEC_RNDTEST # enable rndtest support
2532 #####################################################################
2536 # Embedded system options:
2538 # An embedded system might want to run something other than init.
2539 options INIT_PATH=/sbin/init:/stand/sysinstall
2542 options BUS_DEBUG # enable newbus debugging
2543 options DEBUG_VFS_LOCKS # enable vfs lock debugging
2544 options SOCKBUF_DEBUG # enable sockbuf last record/mb tail checking
2546 #####################################################################
2547 # SYSV IPC KERNEL PARAMETERS
2549 # Maximum number of entries in a semaphore map.
2552 # Maximum number of System V semaphores that can be used on the system at
2556 # Total number of semaphores system wide
2559 # Total number of undo structures in system
2562 # Maximum number of System V semaphores that can be used by a single process
2566 # Maximum number of operations that can be outstanding on a single System V
2567 # semaphore at one time.
2570 # Maximum number of undo operations that can be outstanding on a single
2571 # System V semaphore at one time.
2574 # Maximum number of shared memory pages system wide.
2577 # Maximum size, in bytes, of a single System V shared memory region.
2578 options SHMMAX=(SHMMAXPGS*PAGE_SIZE+1)
2579 options SHMMAXPGS=1025
2581 # Minimum size, in bytes, of a single System V shared memory region.
2584 # Maximum number of shared memory regions that can be used on the system
2588 # Maximum number of System V shared memory regions that can be attached to
2589 # a single process at one time.
2592 # Set the amount of time (in seconds) the system will wait before
2593 # rebooting automatically when a kernel panic occurs. If set to (-1),
2594 # the system will wait indefinitely until a key is pressed on the
2596 options PANIC_REBOOT_WAIT_TIME=16
2598 # Attempt to bypass the buffer cache and put data directly into the
2599 # userland buffer for read operation when O_DIRECT flag is set on the
2600 # file. Both offset and length of the read operation must be
2601 # multiples of the physical media sector size.
2605 # Specify a lower limit for the number of swap I/O buffers. They are
2606 # (among other things) used when bypassing the buffer cache due to
2607 # DIRECTIO kernel option enabled and O_DIRECT flag set on file.
2609 options NSWBUF_MIN=120
2611 #####################################################################
2613 # More undocumented options for linting.
2614 # Note that documenting these are not considered an affront.
2616 options CAM_DEBUG_DELAY
2618 # VFS cluster debugging.
2619 options CLUSTERDEBUG
2623 # Kernel filelock debugging.
2626 # System V compatible message queues
2627 # Please note that the values provided here are used to test kernel
2628 # building. The defaults in the sources provide almost the same numbers.
2629 # MSGSSZ must be a power of 2 between 8 and 1024.
2630 options MSGMNB=2049 # Max number of chars in queue
2631 options MSGMNI=41 # Max number of message queue identifiers
2632 options MSGSEG=2049 # Max number of message segments
2633 options MSGSSZ=16 # Size of a message segment
2634 options MSGTQL=41 # Max number of messages in system
2636 options NBUF=512 # Number of buffer headers
2638 options SCSI_NCR_DEBUG
2639 options SCSI_NCR_MAX_SYNC=10000
2640 options SCSI_NCR_MAX_WIDE=1
2641 options SCSI_NCR_MYADDR=7
2643 options SC_DEBUG_LEVEL=5 # Syscons debug level
2644 options SC_RENDER_DEBUG # syscons rendering debugging
2646 options SHOW_BUSYBUFS # List buffers that prevent root unmount
2647 options SLIP_IFF_OPTS
2648 options VFS_BIO_DEBUG # VFS buffer I/O debugging
2650 options KSTACK_MAX_PAGES=32 # Maximum pages to give the kernel stack
2652 # Adaptec Array Controller driver options
2653 options AAC_DEBUG # Debugging levels:
2654 # 0 - quiet, only emit warnings
2655 # 1 - noisy, emit major function
2656 # points and things done
2657 # 2 - extremely noisy, emit trace
2658 # items in loops, etc.
2660 # Yet more undocumented options for linting.
2661 # BKTR_ALLOC_PAGES has no effect except to cause warnings, and
2662 # BROOKTREE_ALLOC_PAGES hasn't actually been superseded by it, since the
2663 # driver still mostly spells this option BROOKTREE_ALLOC_PAGES.
2664 ##options BKTR_ALLOC_PAGES=(217*4+1)
2665 options BROOKTREE_ALLOC_PAGES=(217*4+1)
2666 options MAXFILES=999
2667 options NDEVFSINO=1025
2668 options NDEVFSOVERFLOW=32769
2670 # Yet more undocumented options for linting.