The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/conf/NOTES

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    1 # $FreeBSD: releng/5.2/sys/conf/NOTES 122796 2003-11-16 12:26:10Z akiyama $
    2 #
    3 # NOTES -- Lines that can be cut/pasted into kernel and hints configs.
    4 #
    5 # Lines that begin with 'device', 'options', 'machine', 'ident', 'maxusers',
    6 # 'makeoptions', 'hints', etc. go into the kernel configuration that you
    7 # run config(8) with.
    8 #
    9 # Lines that begin with 'hint.' are NOT for config(8), they go into your
   10 # hints file.  See /boot/device.hints and/or the 'hints' config(8) directive.
   11 #
   12 # Please use ``make LINT'' to create an old-style LINT file if you want to
   13 # do kernel test-builds.
   14 #
   15 # This file contains machine independent kernel configuration notes.  For
   16 # machine dependent notes, look in /sys/<arch>/conf/NOTES.
   17 #
   18 
   19 #
   20 # NOTES conventions and style guide:
   21 #
   22 # Large block comments should begin and end with a line containing only a
   23 # comment character.
   24 #
   25 # To describe a particular object, a block comment (if it exists) should
   26 # come first.  Next should come device, options, and hints lines in that
   27 # order.  All device and option lines must be described by a comment that
   28 # doesn't just expand the device or option name.  Use only a concise
   29 # comment on the same line if possible.  Very detailed descriptions of
   30 # devices and subsystems belong in manpages.
   31 #
   32 # A space followed by a tab separates 'options' from an option name.  Two
   33 # spaces followed by a tab separate 'device' from a device name.  Comments
   34 # after an option or device should use one space after the comment character.
   35 # To comment out a negative option that disables code and thus should not be
   36 # enabled for LINT builds, precede 'options' with "#!".
   37 #
   38 
   39 #
   40 # This is the ``identification'' of the kernel.  Usually this should
   41 # be the same as the name of your kernel.
   42 #
   43 ident           LINT
   44 
   45 #
   46 # The `maxusers' parameter controls the static sizing of a number of
   47 # internal system tables by a formula defined in subr_param.c.
   48 # Omitting this parameter or setting it to 0 will cause the system to
   49 # auto-size based on physical memory.
   50 #
   51 maxusers        10
   52 
   53 #
   54 # The `makeoptions' parameter allows variables to be passed to the
   55 # generated Makefile in the build area.
   56 #
   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).
   60 #
   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.
   67 #
   68 # KERNEL can be overridden so that you can change the default name of your
   69 # kernel.
   70 #
   71 # MODULES_OVERRIDE can be used to limit modules built to a specific list.
   72 #
   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/snd sound/pcm sound/driver/maestro3"
   78 makeoptions     DESTDIR=/tmp
   79 
   80 
   81 #
   82 # Certain applications can grow to be larger than the 512M limit
   83 # that FreeBSD initially imposes.  Below are some options to
   84 # allow that limit to grow to 1GB, and can be increased further
   85 # with changing the parameters.  MAXDSIZ is the maximum that the
   86 # limit can be set to, and the DFLDSIZ is the default value for
   87 # the limit.  MAXSSIZ is the maximum that the stack limit can be
   88 # set to.  You might want to set the default lower than the max, 
   89 # and explicitly set the maximum with a shell command for processes
   90 # that regularly exceed the limit like INND.
   91 #
   92 options         MAXDSIZ=(1024UL*1024*1024)
   93 options         MAXSSIZ=(128UL*1024*1024)
   94 options         DFLDSIZ=(1024UL*1024*1024)
   95 
   96 #
   97 # BLKDEV_IOSIZE sets the default block size used in user block
   98 # device I/O.  Note that this value will be overriden by the label
   99 # when specifying a block device from a label with a non-0
  100 # partition blocksize.  The default is PAGE_SIZE.
  101 #
  102 options         BLKDEV_IOSIZE=8192
  103 
  104 # Options for the VM subsystem
  105 # L2 cache size (in KB) can be specified in PQ_CACHESIZE
  106 options         PQ_CACHESIZE=512        # color for 512k/16k cache
  107 # Deprecated options supported for backwards compatibility
  108 #options        PQ_NOOPT                # No coloring
  109 #options        PQ_LARGECACHE           # color for 512k/16k cache
  110 #options        PQ_HUGECACHE            # color for 1024k/16k cache
  111 #options        PQ_MEDIUMCACHE          # color for 256k/16k cache
  112 #options        PQ_NORMALCACHE          # color for 64k/16k cache
  113 
  114 # This allows you to actually store this configuration file into
  115 # the kernel binary itself, where it may be later read by saying:
  116 #    strings -n 3 /boot/kernel/kernel | sed -n 's/^___//p' > MYKERNEL
  117 #
  118 options         INCLUDE_CONFIG_FILE     # Include this file in kernel
  119 
  120 options         GEOM_AES                # Don't use, use GEOM_BDE
  121 options         GEOM_APPLE              # Apple partitioning
  122 options         GEOM_BDE                # Disk encryption.
  123 options         GEOM_BSD                # BSD disklabels
  124 options         GEOM_FOX                # Redundant path mitigation
  125 options         GEOM_GPT                # GPT partitioning
  126 options         GEOM_MBR                # DOS/MBR partitioning
  127 options         GEOM_PC98               # NEC PC9800 partitioning
  128 options         GEOM_SUNLABEL           # Sun/Solaris partitioning
  129 options         GEOM_VOL                # Volume names from UFS superblock
  130 
  131 #
  132 # The root device and filesystem type can be compiled in;
  133 # this provides a fallback option if the root device cannot
  134 # be correctly guessed by the bootstrap code, or an override if
  135 # the RB_DFLTROOT flag (-r) is specified when booting the kernel.
  136 #
  137 options         ROOTDEVNAME=\"ufs:da0s2e\"
  138 
  139 
  140 #####################################################################
  141 # Scheduler options:
  142 #
  143 # Specifying one of SCHED_4BSD or SCHED_ULE is mandatory.  These options
  144 # select which scheduler is compiled in.
  145 #
  146 # SCHED_4BSD is the historical, proven, BSD scheduler.  It has a global run
  147 # queue and no cpu affinity which makes it suboptimal for SMP.  It has very
  148 # good interactivity and priority selection.
  149 #
  150 # SCHED_ULE is a new experimental scheduler that has been designed for SMP,
  151 # but will work just fine on UP too.  Users of this scheduler should expect
  152 # some hicups and be prepaired to provide feedback.
  153 #
  154 options         SCHED_4BSD
  155 #options        SCHED_ULE
  156 
  157 #####################################################################
  158 # SMP OPTIONS:
  159 #
  160 # SMP enables building of a Symmetric MultiProcessor Kernel.
  161 
  162 # Mandatory:
  163 options         SMP                     # Symmetric MultiProcessor Kernel
  164 
  165 # ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin
  166 # if the thread that currently owns the mutex is executing on another
  167 # CPU.
  168 options         ADAPTIVE_MUTEXES
  169 
  170 # MUTEX_NOINLINE forces mutex operations to call functions to perform each
  171 # operation rather than inlining the simple cases.  This can be used to
  172 # shrink the size of the kernel text segment.  Note that this behavior is
  173 # already implied by the INVARIANT_SUPPORT, INVARIANTS, MUTEX_PROFILING,
  174 # and WITNESS options.
  175 options         MUTEX_NOINLINE
  176 
  177 # SMP Debugging Options:
  178 #
  179 # MUTEX_DEBUG enables various extra assertions in the mutex code.
  180 # WITNESS enables the witness code which detects deadlocks and cycles
  181 #         during locking operations.
  182 # WITNESS_DDB causes the witness code to drop into the kernel debugger if
  183 #         a lock heirarchy violation occurs or if locks are held when going to
  184 #         sleep.
  185 # WITNESS_SKIPSPIN disables the witness checks on spin mutexes.
  186 options         MUTEX_DEBUG
  187 options         WITNESS
  188 options         WITNESS_DDB
  189 options         WITNESS_SKIPSPIN
  190 
  191 #
  192 # MUTEX_PROFILING - Profiling mutual exclusion locks (mutexes).  This
  193 # records four numbers for each acquisition point (identified by
  194 # source file name and line number): longest time held, total time held,
  195 # number of non-recursive acquisitions, and average time held. Measurements
  196 # are made and stored in nanoseconds (using nanotime(9)), but are presented
  197 # in microseconds, which should be sufficient for the locks which actually
  198 # want this (those that are held long and / or often).  The MUTEX_PROFILING
  199 # option has the following sysctl namespace for controlling and viewing its
  200 # operation:
  201 #
  202 #  debug.mutex.prof.enable - enable / disable profiling
  203 #  debug.mutex.prof.acquisitions - number of mutex acquisitions held
  204 #  debug.mutex.prof.records - number of acquisition points recorded
  205 #  debug.mutex.prof.maxrecords - max number of acquisition points
  206 #  debug.mutex.prof.rejected - number of rejections (due to full table)
  207 #  debug.mutex.prof.hashsize - hash size
  208 #  debug.mutex.prof.collisions - number of hash collisions
  209 #  debug.mutex.prof.stats - profiling statistics
  210 #
  211 options         MUTEX_PROFILING
  212 
  213 
  214 #####################################################################
  215 # COMPATIBILITY OPTIONS                                             
  216 
  217 #
  218 # Implement system calls compatible with 4.3BSD and older versions of
  219 # FreeBSD.  You probably do NOT want to remove this as much current code
  220 # still relies on the 4.3 emulation.  Note that some architectures that
  221 # are supported by FreeBSD do not include support for certain important
  222 # aspects of this compatibility option, namely those related to the
  223 # signal delivery mechanism.
  224 #
  225 options         COMPAT_43
  226 
  227 #
  228 # Be compatible with SunOS.  The COMPAT_43 option above pulls in most
  229 # (all?) of the changes that this option turns on.
  230 #
  231 options         COMPAT_SUNOS
  232 
  233 # Enable FreeBSD4 compatibility syscalls
  234 options         COMPAT_FREEBSD4
  235 
  236 #
  237 # These three options provide support for System V Interface
  238 # Definition-style interprocess communication, in the form of shared
  239 # memory, semaphores, and message queues, respectively.
  240 #
  241 options         SYSVSHM
  242 options         SYSVSEM
  243 options         SYSVMSG
  244 
  245 
  246 #####################################################################
  247 # DEBUGGING OPTIONS
  248 
  249 #
  250 # Enable the kernel debugger.
  251 #
  252 options         DDB
  253 
  254 #
  255 # Use direct symbol lookup routines for ddb instead of the kernel linker
  256 # ones, so that symbols (mostly) work before the kernel linker has been
  257 # initialized.  This is not the default because it breaks ddb's lookup of
  258 # symbols in loaded modules.
  259 #
  260 #!options       DDB_NOKLDSYM
  261 
  262 #
  263 # Print a stack trace of the current thread out on the console for a panic.
  264 #
  265 options         DDB_TRACE
  266 
  267 #
  268 # Don't drop into DDB for a panic. Intended for unattended operation
  269 # where you may want to drop to DDB from the console, but still want
  270 # the machine to recover from a panic
  271 #
  272 options         DDB_UNATTENDED
  273 
  274 #
  275 # If using GDB remote mode to debug the kernel, there's a non-standard
  276 # extension to the remote protocol that can be used to use the serial
  277 # port as both the debugging port and the system console.  It's non-
  278 # standard and you're on your own if you enable it.  See also the
  279 # "remotechat" variables in the FreeBSD specific version of gdb.
  280 #
  281 options         GDB_REMOTE_CHAT
  282 
  283 #
  284 # KTRACE enables the system-call tracing facility ktrace(2).  To be more
  285 # SMP-friendly, KTRACE uses a worker thread to process most trace events
  286 # asynchronously to the thread generating the event.  This requires a
  287 # pre-allocated store of objects representing trace events.  The
  288 # KTRACE_REQUEST_POOL option specifies the initial size of this store.
  289 # The size of the pool can be adjusted both at boottime and runtime via
  290 # the kern.ktrace_request_pool tunable and sysctl.
  291 #
  292 options         KTRACE                  #kernel tracing
  293 options         KTRACE_REQUEST_POOL=101
  294 
  295 #
  296 # KTR is a kernel tracing mechanism imported from BSD/OS.  Currently it
  297 # has no userland interface aside from a few sysctl's.  It is enabled with
  298 # the KTR option.  KTR_ENTRIES defines the number of entries in the circular
  299 # trace buffer.  KTR_COMPILE defines the mask of events to compile into the
  300 # kernel as defined by the KTR_* constants in <sys/ktr.h>.  KTR_MASK defines the
  301 # initial value of the ktr_mask variable which determines at runtime what
  302 # events to trace.  KTR_CPUMASK determines which CPU's log events, with
  303 # bit X corresponding to cpu X.  KTR_VERBOSE enables dumping of KTR events
  304 # to the console by default.  This functionality can be toggled via the
  305 # debug.ktr_verbose sysctl and defaults to off if KTR_VERBOSE is not defined.
  306 #
  307 options         KTR
  308 options         KTR_ENTRIES=1024
  309 options         KTR_COMPILE=(KTR_INTR|KTR_PROC)
  310 options         KTR_MASK=KTR_INTR
  311 options         KTR_CPUMASK=0x3
  312 options         KTR_VERBOSE
  313 
  314 #
  315 # The INVARIANTS option is used in a number of source files to enable
  316 # extra sanity checking of internal structures.  This support is not
  317 # enabled by default because of the extra time it would take to check
  318 # for these conditions, which can only occur as a result of
  319 # programming errors.
  320 #
  321 options         INVARIANTS
  322 
  323 #
  324 # The INVARIANT_SUPPORT option makes us compile in support for
  325 # verifying some of the internal structures.  It is a prerequisite for
  326 # 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
  327 # called.  The intent is that you can set 'INVARIANTS' for single
  328 # source files (by changing the source file or specifying it on the
  329 # command line) if you have 'INVARIANT_SUPPORT' enabled.  Also, if you
  330 # wish to build a kernel module with 'INVARIANTS', then adding
  331 # 'INVARIANT_SUPPORT' to your kernel will provide all the necessary
  332 # infrastructure without the added overhead.
  333 #
  334 options         INVARIANT_SUPPORT
  335 
  336 #
  337 # The DIAGNOSTIC option is used to enable extra debugging information
  338 # from some parts of the kernel.  As this makes everything more noisy,
  339 # it is disabled by default.
  340 #
  341 options         DIAGNOSTIC
  342 
  343 #
  344 # REGRESSION causes optional kernel interfaces necessary only for regression
  345 # testing to be enabled.  These interfaces may consitute security risks
  346 # when enabled, as they permit processes to easily modify aspects of the
  347 # run-time environment to reproduce unlikely or unusual (possibly normally
  348 # impossible) scenarios.
  349 #
  350 options         REGRESSION
  351 
  352 #
  353 # RESTARTABLE_PANICS allows one to continue from a panic as if it were
  354 # a call to the debugger via the Debugger() function instead.  It is only
  355 # useful if a kernel debugger is present.  To restart from a panic, reset
  356 # the panicstr variable to NULL and continue execution.  This option is
  357 # for development use only and should NOT be used in production systems
  358 # to "workaround" a panic.
  359 #
  360 #options        RESTARTABLE_PANICS
  361 
  362 #
  363 # This option let some drivers co-exist that can't co-exist in a running
  364 # system.  This is used to be able to compile all kernel code in one go for
  365 # quality assurance purposes (like this file, which the option takes it name
  366 # from.)
  367 #
  368 options         COMPILING_LINT
  369 
  370 
  371 #####################################################################
  372 # NETWORKING OPTIONS
  373 
  374 #
  375 # Protocol families:
  376 #  Only the INET (Internet) family is officially supported in FreeBSD.
  377 #
  378 options         INET                    #Internet communications protocols
  379 options         INET6                   #IPv6 communications protocols
  380 options         IPSEC                   #IP security
  381 options         IPSEC_ESP               #IP security (crypto; define w/ IPSEC)
  382 options         IPSEC_DEBUG             #debug for IP security
  383 #
  384 # Set IPSEC_FILTERGIF to force packets coming through a gif tunnel
  385 # to be processed by any configured packet filtering (ipfw, ipf).
  386 # The default is that packets coming from a tunnel are _not_ processed;
  387 # they are assumed trusted.
  388 #
  389 # Note that enabling this can be problematic as there are no mechanisms
  390 # in place for distinguishing packets coming out of a tunnel (e.g. no
  391 # encX devices as found on openbsd).
  392 #
  393 #options        IPSEC_FILTERGIF         #filter ipsec packets from a tunnel
  394 
  395 #options        FAST_IPSEC              #new IPsec (cannot define w/ IPSEC)
  396 
  397 options         IPX                     #IPX/SPX communications protocols
  398 options         IPXIP                   #IPX in IP encapsulation (not available)
  399 
  400 #options        NCP                     #NetWare Core protocol
  401 
  402 options         NETATALK                #Appletalk communications protocols
  403 options         NETATALKDEBUG           #Appletalk debugging
  404 
  405 #
  406 # SMB/CIFS requester
  407 # NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
  408 # options.
  409 # NETSMBCRYPTO enables support for encrypted passwords.
  410 options         NETSMB                  #SMB/CIFS requester
  411 options         NETSMBCRYPTO            #encrypted password support for SMB
  412 
  413 # mchain library. It can be either loaded as KLD or compiled into kernel
  414 options         LIBMCHAIN
  415 
  416 # netgraph(4). Enable the base netgraph code with the NETGRAPH option.
  417 # Individual node types can be enabled with the corresponding option
  418 # listed below; however, this is not strictly necessary as netgraph
  419 # will automatically load the corresponding KLD module if the node type
  420 # is not already compiled into the kernel. Each type below has a
  421 # corresponding man page, e.g., ng_async(8).
  422 options         NETGRAPH                #netgraph(4) system
  423 options         NETGRAPH_ASYNC
  424 options         NETGRAPH_BPF
  425 options         NETGRAPH_BRIDGE
  426 options         NETGRAPH_CISCO
  427 options         NETGRAPH_ECHO
  428 options         NETGRAPH_ETHER
  429 options         NETGRAPH_FRAME_RELAY
  430 options         NETGRAPH_GIF
  431 options         NETGRAPH_GIF_DEMUX
  432 options         NETGRAPH_HOLE
  433 options         NETGRAPH_IFACE
  434 options         NETGRAPH_IP_INPUT
  435 options         NETGRAPH_KSOCKET
  436 options         NETGRAPH_L2TP
  437 options         NETGRAPH_LMI
  438 # MPPC compression requires proprietary files (not included)
  439 #options        NETGRAPH_MPPC_COMPRESSION
  440 options         NETGRAPH_MPPC_ENCRYPTION
  441 options         NETGRAPH_ONE2MANY
  442 options         NETGRAPH_PPP
  443 options         NETGRAPH_PPPOE
  444 options         NETGRAPH_PPTPGRE
  445 options         NETGRAPH_RFC1490
  446 options         NETGRAPH_SOCKET
  447 options         NETGRAPH_SPLIT
  448 options         NETGRAPH_TEE
  449 options         NETGRAPH_TTY
  450 options         NETGRAPH_UI
  451 options         NETGRAPH_VJC
  452 options         NETGRAPH_ATM_ATMPIF
  453 
  454 # NgATM - Netgraph ATM
  455 options         NGATM_ATM
  456 options         NGATM_ATMBASE
  457 options         NGATM_SSCOP
  458 options         NGATM_SSCFU
  459 options         NGATM_UNI
  460 
  461 device          mn      # Munich32x/Falc54 Nx64kbit/sec cards.
  462 device          lmc     # tulip based LanMedia WAN cards
  463 device          musycc  # LMC/SBE LMC1504 quad T1/E1
  464 
  465 #
  466 # Network interfaces:
  467 #  The `loop' device is MANDATORY when networking is enabled.
  468 #  The `ether' device provides generic code to handle
  469 #  Ethernets; it is MANDATORY when an Ethernet device driver is
  470 #  configured or token-ring is enabled.
  471 #  The `wlan' device provides generic code to support 802.11
  472 #  drivers, including host AP mode; it is MANDATORY for the wi
  473 #  driver and will eventually be required by all 802.11 drivers.
  474 #  The `fddi' device provides generic code to support FDDI.
  475 #  The `arcnet' device provides generic code to support Arcnet.
  476 #  The `sppp' device serves a similar role for certain types
  477 #  of synchronous PPP links (like `cx', `ar').
  478 #  The `sl' device implements the Serial Line IP (SLIP) service.
  479 #  The `ppp' device implements the Point-to-Point Protocol.
  480 #  The `bpf' device enables the Berkeley Packet Filter.  Be
  481 #  aware of the legal and administrative consequences of enabling this
  482 #  option.  The number of devices determines the maximum number of
  483 #  simultaneous BPF clients programs runnable.
  484 #  The `disc' device implements a minimal network interface,
  485 #  which throws away all packets sent and never receives any.  It is
  486 #  included for testing purposes.  This shows up as the `ds' interface.
  487 #  The `tap' device is a pty-like virtual Ethernet interface
  488 #  The `tun' device implements (user-)ppp and nos-tun
  489 #  The `gif' device implements IPv6 over IP4 tunneling,
  490 #  IPv4 over IPv6 tunneling, IPv4 over IPv4 tunneling and
  491 #  IPv6 over IPv6 tunneling.
  492 #  The `gre' device implements two types of IP4 over IP4 tunneling:
  493 #  GRE and MOBILE, as specified in the RFC1701 and RFC2004.
  494 #  The XBONEHACK option allows the same pair of addresses to be configured on
  495 #  multiple gif interfaces.
  496 #  The `faith' device captures packets sent to it and diverts them
  497 #  to the IPv4/IPv6 translation daemon.
  498 #  The `stf' device implements 6to4 encapsulation.
  499 #  The `ef' device provides support for multiple ethernet frame types
  500 #  specified via ETHER_* options. See ef(4) for details.
  501 #
  502 # The PPP_BSDCOMP option enables support for compress(1) style entire
  503 # packet compression, the PPP_DEFLATE is for zlib/gzip style compression.
  504 # PPP_FILTER enables code for filtering the ppp data stream and selecting
  505 # events for resetting the demand dial activity timer - requires bpf.
  506 # See pppd(8) for more details.
  507 #
  508 device          ether                   #Generic Ethernet
  509 device          vlan                    #VLAN support
  510 device          wlan                    #802.11 support
  511 device          token                   #Generic TokenRing
  512 device          fddi                    #Generic FDDI
  513 device          arcnet                  #Generic Arcnet
  514 device          sppp                    #Generic Synchronous PPP
  515 device          loop                    #Network loopback device
  516 device          bpf                     #Berkeley packet filter
  517 device          disc                    #Discard device (ds0, ds1, etc)
  518 device          tap                     #Virtual Ethernet driver
  519 device          tun                     #Tunnel driver (ppp(8), nos-tun(8))
  520 device          sl                      #Serial Line IP
  521 device          gre                     #IP over IP tunneling
  522 device          ppp                     #Point-to-point protocol
  523 options         PPP_BSDCOMP             #PPP BSD-compress support
  524 options         PPP_DEFLATE             #PPP zlib/deflate/gzip support
  525 options         PPP_FILTER              #enable bpf filtering (needs bpf)
  526 
  527 device          ef                      # Multiple ethernet frames support
  528 options         ETHER_II                # enable Ethernet_II frame
  529 options         ETHER_8023              # enable Ethernet_802.3 (Novell) frame
  530 options         ETHER_8022              # enable Ethernet_802.2 frame
  531 options         ETHER_SNAP              # enable Ethernet_802.2/SNAP frame
  532 
  533 # for IPv6
  534 device          gif                     #IPv6 and IPv4 tunneling
  535 options         XBONEHACK
  536 device          faith                   #for IPv6 and IPv4 translation
  537 device          stf                     #6to4 IPv6 over IPv4 encapsulation
  538 
  539 #
  540 # Internet family options:
  541 #
  542 # MROUTING enables the kernel multicast packet forwarder, which works
  543 # with mrouted(8).
  544 #
  545 # PIM enables Protocol Independent Multicast in the kernel.
  546 # Requires MROUTING enabled.
  547 #
  548 # IPFIREWALL enables support for IP firewall construction, in
  549 # conjunction with the `ipfw' program.  IPFIREWALL_VERBOSE sends
  550 # logged packets to the system logger.  IPFIREWALL_VERBOSE_LIMIT
  551 # limits the number of times a matching entry can be logged.
  552 #
  553 # WARNING:  IPFIREWALL defaults to a policy of "deny ip from any to any"
  554 # and if you do not add other rules during startup to allow access,
  555 # YOU WILL LOCK YOURSELF OUT.  It is suggested that you set firewall_type=open
  556 # in /etc/rc.conf when first enabling this feature, then refining the
  557 # firewall rules in /etc/rc.firewall after you've tested that the new kernel
  558 # feature works properly.
  559 #
  560 # IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
  561 # allow everything.  Use with care, if a cracker can crash your
  562 # firewall machine, they can get to your protected machines.  However,
  563 # if you are using it as an as-needed filter for specific problems as
  564 # they arise, then this may be for you.  Changing the default to 'allow'
  565 # means that you won't get stuck if the kernel and /sbin/ipfw binary get
  566 # out of sync.
  567 #
  568 # IPDIVERT enables the divert IP sockets, used by ``ipfw divert''
  569 #
  570 # IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
  571 # packets without touching the ttl).  This can be useful to hide firewalls
  572 # from traceroute and similar tools.
  573 #
  574 # PFIL_HOOKS enables an abtraction layer which is meant to be used in
  575 # network code where filtering is required.  See the pfil(9) man page.
  576 # This option is required by the IPFILTER option.
  577 #
  578 # TCPDEBUG enables code which keeps traces of the TCP state machine
  579 # for sockets with the SO_DEBUG option set, which can then be examined
  580 # using the trpt(8) utility.
  581 #
  582 options         MROUTING                # Multicast routing
  583 options         PIM                     # Protocol Independent Multicast
  584 options         IPFIREWALL              #firewall
  585 options         IPFIREWALL_VERBOSE      #enable logging to syslogd(8)
  586 options         IPFIREWALL_VERBOSE_LIMIT=100    #limit verbosity
  587 options         IPFIREWALL_DEFAULT_TO_ACCEPT    #allow everything by default
  588 options         IPV6FIREWALL            #firewall for IPv6
  589 options         IPV6FIREWALL_VERBOSE
  590 options         IPV6FIREWALL_VERBOSE_LIMIT=100
  591 options         IPV6FIREWALL_DEFAULT_TO_ACCEPT
  592 options         IPDIVERT                #divert sockets
  593 options         IPFILTER                #ipfilter support
  594 options         IPFILTER_LOG            #ipfilter logging
  595 options         IPFILTER_DEFAULT_BLOCK  #block all packets by default
  596 options         IPSTEALTH               #support for stealth forwarding
  597 options         PFIL_HOOKS              #required by IPFILTER
  598 options         TCPDEBUG
  599 
  600 # The MBUF_STRESS_TEST option enables options which create
  601 # various random failures / extreme cases related to mbuf
  602 # functions.  See the mbuf(9) manpage for a list of available
  603 # test cases.
  604 options         MBUF_STRESS_TEST
  605 
  606 # RANDOM_IP_ID causes the ID field in IP packets to be randomized
  607 # instead of incremented by 1 with each packet generated.  This
  608 # option closes a minor information leak which allows remote
  609 # observers to determine the rate of packet generation on the
  610 # machine by watching the counter.
  611 options         RANDOM_IP_ID
  612 
  613 # Statically Link in accept filters
  614 options         ACCEPT_FILTER_DATA
  615 options         ACCEPT_FILTER_HTTP
  616 
  617 # TCP_DROP_SYNFIN adds support for ignoring TCP packets with SYN+FIN. This
  618 # prevents nmap et al. from identifying the TCP/IP stack, but breaks support
  619 # for RFC1644 extensions and is not recommended for web servers.
  620 #
  621 options         TCP_DROP_SYNFIN         #drop TCP packets with SYN+FIN
  622 
  623 # DUMMYNET enables the "dummynet" bandwidth limiter. You need
  624 # IPFIREWALL as well. See the dummynet(4) and ipfw(8) manpages for more info.
  625 # When you run DUMMYNET it is advisable to also have "options HZ=1000"
  626 # to achieve a smoother scheduling of the traffic.
  627 #
  628 # BRIDGE enables bridging between ethernet cards -- see bridge(4).
  629 # You can use IPFIREWALL and DUMMYNET together with bridging.
  630 #
  631 options         DUMMYNET
  632 options         BRIDGE
  633 
  634 # Zero copy sockets support.  This enables "zero copy" for sending and
  635 # receving data via a socket.  The send side works for any type of NIC,
  636 # the receive side only works for NICs that support MTUs greater than the
  637 # page size of your architecture and that support header splitting.  See
  638 # zero_copy(9) for more details.
  639 options         ZERO_COPY_SOCKETS
  640 
  641 #
  642 # ATM (HARP version) options
  643 #
  644 # ATM_CORE includes the base ATM functionality code.  This must be included
  645 #       for ATM support.
  646 #
  647 # ATM_IP includes support for running IP over ATM.
  648 #
  649 # At least one (and usually only one) of the following signalling managers
  650 # must be included (note that all signalling managers include PVC support):
  651 # ATM_SIGPVC includes support for the PVC-only signalling manager `sigpvc'.
  652 # ATM_SPANS includes support for the `spans' signalling manager, which runs
  653 #       the FORE Systems's proprietary SPANS signalling protocol.
  654 # ATM_UNI includes support for the `uni30' and `uni31' signalling managers,
  655 #       which run the ATM Forum UNI 3.x signalling protocols.
  656 #
  657 # The `hea' driver provides support for the Efficient Networks, Inc.
  658 # ENI-155p ATM PCI Adapter.
  659 #
  660 # The `hfa' driver provides support for the FORE Systems, Inc.
  661 # PCA-200E ATM PCI Adapter.
  662 #
  663 # The `harp' pseudo-driver makes all NATM interface drivers available to HARP.
  664 #
  665 options         ATM_CORE                #core ATM protocol family
  666 options         ATM_IP                  #IP over ATM support
  667 options         ATM_SIGPVC              #SIGPVC signalling manager
  668 options         ATM_SPANS               #SPANS signalling manager
  669 options         ATM_UNI                 #UNI signalling manager
  670 
  671 device          hea                     #Efficient ENI-155p ATM PCI
  672 device          hfa                     #FORE PCA-200E ATM PCI
  673 device          harp                    #Pseudo-interface for NATM
  674 
  675 
  676 #####################################################################
  677 # FILESYSTEM OPTIONS
  678 
  679 #
  680 # Only the root, /usr, and /tmp filesystems need be statically
  681 # compiled; everything else will be automatically loaded at mount
  682 # time.  (Exception: the UFS family--- FFS --- cannot
  683 # currently be demand-loaded.)  Some people still prefer to statically
  684 # compile other filesystems as well.
  685 #
  686 # NB: The NULL, PORTAL, UMAP and UNION filesystems are known to be
  687 # buggy, and WILL panic your system if you attempt to do anything with
  688 # them.  They are included here as an incentive for some enterprising
  689 # soul to sit down and fix them.
  690 #
  691 
  692 # One of these is mandatory:
  693 options         FFS                     #Fast filesystem
  694 options         NFSCLIENT               #Network File System
  695 
  696 # The rest are optional:
  697 options         CD9660                  #ISO 9660 filesystem
  698 options         FDESCFS                 #File descriptor filesystem
  699 options         HPFS                    #OS/2 File system
  700 options         MSDOSFS                 #MS DOS File System (FAT, FAT32)
  701 options         NFSSERVER               #Network File System
  702 options         NTFS                    #NT File System
  703 options         NULLFS                  #NULL filesystem
  704 #options        NWFS                    #NetWare filesystem
  705 options         PORTALFS                #Portal filesystem
  706 options         PROCFS                  #Process filesystem (requires PSEUDOFS)
  707 options         PSEUDOFS                #Pseudo-filesystem framework
  708 options         SMBFS                   #SMB/CIFS filesystem
  709 options         UDF                     #Universal Disk Format
  710 options         UMAPFS                  #UID map filesystem
  711 options         UNIONFS                 #Union filesystem
  712 # The xFS_ROOT options REQUIRE the associated ``options xFS''
  713 options         NFS_ROOT                #NFS usable as root device
  714 
  715 # Soft updates is a technique for improving filesystem speed and
  716 # making abrupt shutdown less risky.
  717 #
  718 options         SOFTUPDATES
  719 
  720 # Extended attributes allow additional data to be associated with files,
  721 # and is used for ACLs, Capabilities, and MAC labels.
  722 # See src/sys/ufs/ufs/README.extattr for more information.
  723 options         UFS_EXTATTR
  724 options         UFS_EXTATTR_AUTOSTART
  725 
  726 # Access Control List support for UFS filesystems.  The current ACL
  727 # implementation requires extended attribute support, UFS_EXTATTR,
  728 # for the underlying filesystem.
  729 # See src/sys/ufs/ufs/README.acls for more information.
  730 options         UFS_ACL
  731 
  732 # Directory hashing improves the speed of operations on very large
  733 # directories at the expense of some memory.
  734 options         UFS_DIRHASH
  735 
  736 # Make space in the kernel for a root filesystem on a md device.
  737 # Define to the number of kilobytes to reserve for the filesystem.
  738 options         MD_ROOT_SIZE=10
  739 
  740 # Make the md device a potential root device, either with preloaded
  741 # images of type mfs_root or md_root.
  742 options         MD_ROOT
  743 
  744 # Disk quotas are supported when this option is enabled.
  745 options         QUOTA                   #enable disk quotas
  746 
  747 # If you are running a machine just as a fileserver for PC and MAC
  748 # users, using SAMBA or Netatalk, you may consider setting this option
  749 # and keeping all those users' directories on a filesystem that is
  750 # mounted with the suiddir option. This gives new files the same
  751 # ownership as the directory (similar to group). It's a security hole
  752 # if you let these users run programs, so confine it to file-servers
  753 # (but it'll save you lots of headaches in those cases). Root owned
  754 # directories are exempt and X bits are cleared. The suid bit must be
  755 # set on the directory as well; see chmod(1) PC owners can't see/set
  756 # ownerships so they keep getting their toes trodden on. This saves
  757 # you all the support calls as the filesystem it's used on will act as
  758 # they expect: "It's my dir so it must be my file".
  759 #
  760 options         SUIDDIR
  761 
  762 # NFS options:
  763 options         NFS_MINATTRTIMO=3       # VREG attrib cache timeout in sec
  764 options         NFS_MAXATTRTIMO=60
  765 options         NFS_MINDIRATTRTIMO=30   # VDIR attrib cache timeout in sec
  766 options         NFS_MAXDIRATTRTIMO=60
  767 options         NFS_GATHERDELAY=10      # Default write gather delay (msec)
  768 options         NFS_WDELAYHASHSIZ=16    # and with this
  769 options         NFS_DEBUG               # Enable NFS Debugging
  770 
  771 # Coda stuff:
  772 options         CODA                    #CODA filesystem.
  773 device          vcoda   4               #coda minicache <-> venus comm.
  774 # Use the old Coda 5.x venus<->kernel interface instead of the new       
  775 # realms-aware 6.x protocol.
  776 #options        CODA_COMPAT_5
  777 
  778 #
  779 # Add support for the EXT2FS filesystem of Linux fame.  Be a bit
  780 # careful with this - the ext2fs code has a tendency to lag behind
  781 # changes and not be exercised very much, so mounting read/write could
  782 # be dangerous (and even mounting read only could result in panics.)
  783 #
  784 options         EXT2FS
  785 
  786 # Use real implementations of the aio_* system calls.  There are numerous
  787 # stability and security issues in the current aio code that make it
  788 # unsuitable for inclusion on machines with untrusted local users.
  789 options         VFS_AIO
  790 
  791 # Cryptographically secure random number generator; /dev/[u]random
  792 device          random
  793 
  794 # Optional character code conversion support with LIBICONV.
  795 # Each option requires their base file system and LIBICONV.
  796 options         CD9660_ICONV
  797 options         MSDOSFS_ICONV
  798 options         NTFS_ICONV
  799 options         UDF_ICONV
  800 
  801 
  802 #####################################################################
  803 # POSIX P1003.1B
  804 
  805 # Real time extensions added in the 1993 Posix
  806 # _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
  807 
  808 options         _KPOSIX_PRIORITY_SCHEDULING
  809 # p1003_1b_semaphores are very experimental,
  810 # user should be ready to assist in debugging if problems arise.
  811 options         P1003_1B_SEMAPHORES
  812 
  813 
  814 #####################################################################
  815 # SECURITY POLICY PARAMETERS
  816 
  817 # Support for Mandatory Access Control (MAC):
  818 options         MAC
  819 options         MAC_BIBA
  820 options         MAC_BSDEXTENDED
  821 options         MAC_DEBUG
  822 options         MAC_IFOFF
  823 options         MAC_LOMAC
  824 options         MAC_MLS
  825 options         MAC_NONE
  826 options         MAC_PARTITION
  827 options         MAC_PORTACL
  828 options         MAC_SEEOTHERUIDS
  829 options         MAC_STUB
  830 options         MAC_TEST
  831 
  832 
  833 #####################################################################
  834 # CLOCK OPTIONS
  835 
  836 # The granularity of operation is controlled by the kernel option HZ whose
  837 # default value (100) means a granularity of 10ms (1s/HZ).
  838 # Some subsystems, such as DUMMYNET, might benefit from a smaller
  839 # granularity such as 1ms or less, for a smoother scheduling of packets.
  840 # Consider, however, that reducing the granularity too much might
  841 # cause excessive overhead in clock interrupt processing,
  842 # potentially causing ticks to be missed and thus actually reducing
  843 # the accuracy of operation.
  844 
  845 options         HZ=100
  846 
  847 # Enable support for the kernel PLL to use an external PPS signal,
  848 # under supervision of [x]ntpd(8)
  849 # More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
  850 
  851 options         PPS_SYNC
  852 
  853 
  854 #####################################################################
  855 # SCSI DEVICES
  856 
  857 # SCSI DEVICE CONFIGURATION
  858 
  859 # The SCSI subsystem consists of the `base' SCSI code, a number of
  860 # high-level SCSI device `type' drivers, and the low-level host-adapter
  861 # device drivers.  The host adapters are listed in the ISA and PCI
  862 # device configuration sections below.
  863 #
  864 # It is possible to wire down your SCSI devices so that a given bus,
  865 # target, and LUN always come on line as the same device unit.  In
  866 # earlier versions the unit numbers were assigned in the order that
  867 # the devices were probed on the SCSI bus.  This means that if you
  868 # removed a disk drive, you may have had to rewrite your /etc/fstab
  869 # file, and also that you had to be careful when adding a new disk
  870 # as it may have been probed earlier and moved your device configuration
  871 # around.  (See also option GEOM_VOL for a different solution to this
  872 # problem.)
  873 
  874 # This old behavior is maintained as the default behavior.  The unit
  875 # assignment begins with the first non-wired down unit for a device
  876 # type.  For example, if you wire a disk as "da3" then the first
  877 # non-wired disk will be assigned da4.
  878 
  879 # The syntax for wiring down devices is:
  880 
  881 hint.scbus.0.at="ahc0"
  882 hint.scbus.1.at="ahc1"
  883 hint.scbus.1.bus="0"
  884 hint.scbus.3.at="ahc2"
  885 hint.scbus.3.bus="0"
  886 hint.scbus.2.at="ahc2"
  887 hint.scbus.2.bus="1"
  888 hint.da.0.at="scbus0"
  889 hint.da.0.target="0"
  890 hint.da.0.unit="0"
  891 hint.da.1.at="scbus3"
  892 hint.da.1.target="1"
  893 hint.da.2.at="scbus2"
  894 hint.da.2.target="3"
  895 hint.sa.1.at="scbus1"
  896 hint.sa.1.target="6"
  897 
  898 # "units" (SCSI logical unit number) that are not specified are
  899 # treated as if specified as LUN 0.
  900 
  901 # All SCSI devices allocate as many units as are required.
  902 
  903 # The ch driver drives SCSI Media Changer ("jukebox") devices.
  904 #
  905 # The da driver drives SCSI Direct Access ("disk") and Optical Media
  906 # ("WORM") devices.
  907 #
  908 # The sa driver drives SCSI Sequential Access ("tape") devices.
  909 #
  910 # The cd driver drives SCSI Read Only Direct Access ("cd") devices.
  911 #
  912 # The ses driver drives SCSI Envinronment Services ("ses") and
  913 # SAF-TE ("SCSI Accessable Fault-Tolerant Enclosure") devices.
  914 #
  915 # The pt driver drives SCSI Processor devices.
  916 #
  917 # 
  918 # Target Mode support is provided here but also requires that a SIM
  919 # (SCSI Host Adapter Driver) provide support as well.
  920 #
  921 # The targ driver provides target mode support as a Processor type device.
  922 # It exists to give the minimal context necessary to respond to Inquiry
  923 # commands. There is a sample user application that shows how the rest
  924 # of the command support might be done in /usr/share/examples/scsi_target.
  925 #
  926 # The targbh driver provides target mode support and exists to respond
  927 # to incoming commands that do not otherwise have a logical unit assigned
  928 # to them.
  929 # 
  930 # The "unknown" device (uk? in pre-2.0.5) is now part of the base SCSI
  931 # configuration as the "pass" driver.
  932 
  933 device          scbus           #base SCSI code
  934 device          ch              #SCSI media changers
  935 device          da              #SCSI direct access devices (aka disks)
  936 device          sa              #SCSI tapes
  937 device          cd              #SCSI CD-ROMs
  938 device          ses             #SCSI Environmental Services (and SAF-TE)
  939 device          pt              #SCSI processor 
  940 device          targ            #SCSI Target Mode Code
  941 device          targbh          #SCSI Target Mode Blackhole Device
  942 device          pass            #CAM passthrough driver
  943 
  944 # CAM OPTIONS:
  945 # debugging options:
  946 # -- NOTE --  If you specify one of the bus/target/lun options, you must
  947 #             specify them all!
  948 # CAMDEBUG: When defined enables debugging macros
  949 # CAM_DEBUG_BUS:  Debug the given bus.  Use -1 to debug all busses.
  950 # CAM_DEBUG_TARGET:  Debug the given target.  Use -1 to debug all targets.
  951 # CAM_DEBUG_LUN:  Debug the given lun.  Use -1 to debug all luns.
  952 # CAM_DEBUG_FLAGS:  OR together CAM_DEBUG_INFO, CAM_DEBUG_TRACE,
  953 #                   CAM_DEBUG_SUBTRACE, and CAM_DEBUG_CDB
  954 #
  955 # CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
  956 # CAM_NEW_TRAN_CODE: this is the new transport layer code that will be switched
  957 #                       to soon
  958 # SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
  959 # SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
  960 # SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
  961 #             queue after a bus reset, and the number of milliseconds to
  962 #             freeze the device queue after a bus device reset.  This
  963 #             can be changed at boot and runtime with the
  964 #             kern.cam.scsi_delay tunable/sysctl.
  965 options         CAMDEBUG
  966 options         CAM_DEBUG_BUS=-1
  967 options         CAM_DEBUG_TARGET=-1
  968 options         CAM_DEBUG_LUN=-1
  969 options         CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO|CAM_DEBUG_TRACE|CAM_DEBUG_CDB)
  970 options         CAM_MAX_HIGHPOWER=4
  971 options         SCSI_NO_SENSE_STRINGS
  972 options         SCSI_NO_OP_STRINGS
  973 options         SCSI_DELAY=8000 # Be pessimistic about Joe SCSI device
  974 
  975 # Options for the CAM SCSI disk driver:
  976 # DA_OLD_QUIRKS: Restore old USB and firewire quirks that have been
  977 #                deprecated.  Please also email scsi@freebsd.org if you
  978 #                have a device that needs this option.
  979 options         DA_OLD_QUIRKS
  980 
  981 # Options for the CAM CDROM driver:
  982 # CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
  983 # CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
  984 #                           enforced if there is I/O waiting for another LUN
  985 # The compiled in defaults for these variables are 2 and 10 seconds,
  986 # respectively.
  987 #
  988 # These can also be changed on the fly with the following sysctl variables:
  989 # kern.cam.cd.changer.min_busy_seconds
  990 # kern.cam.cd.changer.max_busy_seconds
  991 #
  992 options         CHANGER_MIN_BUSY_SECONDS=2
  993 options         CHANGER_MAX_BUSY_SECONDS=10
  994 
  995 # Options for the CAM sequential access driver:
  996 # SA_IO_TIMEOUT: Timeout for read/write/wfm  operations, in minutes
  997 # SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
  998 # SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
  999 # SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
 1000 # SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
 1001 options         SA_IO_TIMEOUT=4
 1002 options         SA_SPACE_TIMEOUT=60
 1003 options         SA_REWIND_TIMEOUT=(2*60)
 1004 options         SA_ERASE_TIMEOUT=(4*60)
 1005 options         SA_1FM_AT_EOD
 1006 
 1007 # Optional timeout for the CAM processor target (pt) device
 1008 # This is specified in seconds.  The default is 60 seconds.
 1009 options         SCSI_PT_DEFAULT_TIMEOUT=60
 1010 
 1011 # Optional enable of doing SES passthrough on other devices (e.g., disks)
 1012 #
 1013 # Normally disabled because a lot of newer SCSI disks report themselves
 1014 # as having SES capabilities, but this can then clot up attempts to build
 1015 # build a topology with the SES device that's on the box these drives
 1016 # are in....
 1017 options         SES_ENABLE_PASSTHROUGH
 1018 
 1019 
 1020 #####################################################################
 1021 # MISCELLANEOUS DEVICES AND OPTIONS
 1022 
 1023 # The `pty' device usually turns out to be ``effectively mandatory'',
 1024 # as it is required for `telnetd', `rlogind', `screen', `emacs', and
 1025 # `xterm', among others.
 1026 
 1027 device          pty             #Pseudo ttys
 1028 device          nmdm            #back-to-back tty devices
 1029 device          md              #Memory/malloc disk
 1030 device          snp             #Snoop device - to look at pty/vty/etc..
 1031 device          ccd             #Concatenated disk driver
 1032 
 1033 # Configuring Vinum into the kernel is not necessary, since the kld
 1034 # module gets started automatically when vinum(8) starts.  This
 1035 # device is also untested.  Use at your own risk.
 1036 #
 1037 # The option VINUMDEBUG must match the value set in CFLAGS
 1038 # in src/sbin/vinum/Makefile.  Failure to do so will result in
 1039 # the following message from vinum(8):
 1040 #
 1041 # Can't get vinum config: Invalid argument
 1042 #
 1043 # see vinum(4) for more reasons not to use these options.
 1044 device          vinum           #Vinum concat/mirror/raid driver
 1045 options         VINUMDEBUG      #enable Vinum debugging hooks
 1046 
 1047 # RAIDframe device.  RAID_AUTOCONFIG allows RAIDframe to search all of the
 1048 # disk devices in the system looking for components that it recognizes (already
 1049 # configured once before) and auto-configured them into arrays.
 1050 device          raidframe
 1051 options         RAID_AUTOCONFIG
 1052 
 1053 # Kernel side iconv library
 1054 options         LIBICONV
 1055 
 1056 # Size of the kernel message buffer.  Should be N * pagesize.
 1057 options         MSGBUF_SIZE=40960
 1058 
 1059 # Maximum size of a tty or pty input buffer.
 1060 options         TTYHOG=8193
 1061 
 1062 
 1063 #####################################################################
 1064 # HARDWARE DEVICE CONFIGURATION
 1065 
 1066 # For ISA the required hints are listed.
 1067 # EISA, MCA, PCI and pccard are self identifying buses, so no hints
 1068 # are needed.
 1069 
 1070 #
 1071 # Mandatory devices:
 1072 #
 1073 
 1074 # The keyboard controller; it controls the keyboard and the PS/2 mouse.
 1075 device          atkbdc
 1076 hint.atkbdc.0.at="isa"
 1077 hint.atkbdc.0.port="0x060"
 1078 
 1079 # The AT keyboard
 1080 device          atkbd
 1081 hint.atkbd.0.at="atkbdc"
 1082 hint.atkbd.0.irq="1"
 1083 
 1084 # Options for atkbd:
 1085 options         ATKBD_DFLT_KEYMAP       # specify the built-in keymap
 1086 makeoptions     ATKBD_DFLT_KEYMAP=jp.106
 1087 
 1088 # These options are valid for other keyboard drivers as well.
 1089 options         KBD_DISABLE_KEYMAP_LOAD # refuse to load a keymap
 1090 options         KBD_INSTALL_CDEV        # install a CDEV entry in /dev
 1091 
 1092 # `flags' for atkbd:
 1093 #       0x01    Force detection of keyboard, else we always assume a keyboard
 1094 #       0x02    Don't reset keyboard, useful for some newer ThinkPads
 1095 #       0x03    Force detection and avoid reset, might help with certain
 1096 #               dockingstations
 1097 #       0x04    Old-style (XT) keyboard support, useful for older ThinkPads
 1098 
 1099 # PS/2 mouse
 1100 device          psm
 1101 hint.psm.0.at="atkbdc"
 1102 hint.psm.0.irq="12"
 1103 
 1104 # Options for psm:
 1105 options         PSM_HOOKRESUME          #hook the system resume event, useful
 1106                                         #for some laptops
 1107 options         PSM_RESETAFTERSUSPEND   #reset the device at the resume event
 1108 
 1109 # Video card driver for VGA adapters.
 1110 device          vga
 1111 hint.vga.0.at="isa"
 1112 
 1113 # Options for vga:
 1114 # Try the following option if the mouse pointer is not drawn correctly
 1115 # or font does not seem to be loaded properly.  May cause flicker on
 1116 # some systems.
 1117 options         VGA_ALT_SEQACCESS
 1118 
 1119 # If you can dispense with some vga driver features, you may want to
 1120 # use the following options to save some memory.
 1121 #options        VGA_NO_FONT_LOADING     # don't save/load font
 1122 #options        VGA_NO_MODE_CHANGE      # don't change video modes
 1123 
 1124 # Older video cards may require this option for proper operation.
 1125 options         VGA_SLOW_IOACCESS       # do byte-wide i/o's to TS and GDC regs
 1126 
 1127 # The following option probably won't work with the LCD displays.
 1128 options         VGA_WIDTH90             # support 90 column modes
 1129 
 1130 options         FB_DEBUG                # Frame buffer debugging
 1131 
 1132 device          splash                  # Splash screen and screen saver support
 1133 
 1134 # Various screen savers.
 1135 device          blank_saver
 1136 device          daemon_saver
 1137 device          fade_saver
 1138 device          fire_saver
 1139 device          green_saver
 1140 device          logo_saver
 1141 device          rain_saver
 1142 device          star_saver
 1143 device          warp_saver
 1144 
 1145 # The syscons console driver (sco color console compatible).
 1146 device          sc
 1147 hint.sc.0.at="isa"
 1148 options         MAXCONS=16              # number of virtual consoles
 1149 options         SC_ALT_MOUSE_IMAGE      # simplified mouse cursor in text mode
 1150 options         SC_DFLT_FONT            # compile font in
 1151 makeoptions     SC_DFLT_FONT=cp850
 1152 options         SC_DISABLE_DDBKEY       # disable `debug' key
 1153 options         SC_DISABLE_REBOOT       # disable reboot key sequence
 1154 options         SC_HISTORY_SIZE=200     # number of history buffer lines
 1155 options         SC_MOUSE_CHAR=0x3       # char code for text mode mouse cursor
 1156 options         SC_PIXEL_MODE           # add support for the raster text mode
 1157 
 1158 # The following options will let you change the default colors of syscons.
 1159 options         SC_NORM_ATTR=(FG_GREEN|BG_BLACK)
 1160 options         SC_NORM_REV_ATTR=(FG_YELLOW|BG_GREEN)
 1161 options         SC_KERNEL_CONS_ATTR=(FG_RED|BG_BLACK)
 1162 options         SC_KERNEL_CONS_REV_ATTR=(FG_BLACK|BG_RED)
 1163 
 1164 # The following options will let you change the default behaviour of
 1165 # cut-n-paste feature
 1166 options         SC_CUT_SPACES2TABS      # convert leading spaces into tabs
 1167 options         SC_CUT_SEPCHARS=\"x09\" # set of characters that delimit words
 1168                                         # (default is single space - \"x20\")
 1169 
 1170 # If you have a two button mouse, you may want to add the following option
 1171 # to use the right button of the mouse to paste text.
 1172 options         SC_TWOBUTTON_MOUSE
 1173 
 1174 # You can selectively disable features in syscons.
 1175 options         SC_NO_CUTPASTE
 1176 options         SC_NO_FONT_LOADING
 1177 options         SC_NO_HISTORY
 1178 options         SC_NO_SYSMOUSE
 1179 options         SC_NO_SUSPEND_VTYSWITCH
 1180 
 1181 # `flags' for sc
 1182 #       0x80    Put the video card in the VESA 800x600 dots, 16 color mode
 1183 #       0x100   Probe for a keyboard device periodically if one is not present
 1184 
 1185 #
 1186 # Optional devices:
 1187 #
 1188 
 1189 #
 1190 # SCSI host adapters:
 1191 #
 1192 # adv: All Narrow SCSI bus AdvanSys controllers.
 1193 # adw: Second Generation AdvanSys controllers including the ADV940UW.
 1194 # aha: Adaptec 154x/1535/1640
 1195 # ahb: Adaptec 174x EISA controllers
 1196 # ahc: Adaptec 274x/284x/2910/293x/294x/394x/3950x/3960x/398X/4944/
 1197 #      19160x/29160x, aic7770/aic78xx
 1198 # ahd: Adaptec 29320/39320 Controllers.
 1199 # aic: Adaptec 6260/6360, APA-1460 (PC Card), NEC PC9801-100 (C-BUS)
 1200 # amd: Support for the AMD 53C974 SCSI host adapter chip as found on devices
 1201 #      such as the Tekram DC-390(T).
 1202 # bt:  Most Buslogic controllers: including BT-445, BT-54x, BT-64x, BT-74x,
 1203 #      BT-75x, BT-946, BT-948, BT-956, BT-958, SDC3211B, SDC3211F, SDC3222F
 1204 # isp: Qlogic ISP 1020, 1040 and 1040B PCI SCSI host adapters,
 1205 #      ISP 1240 Dual Ultra SCSI, ISP 1080 and 1280 (Dual) Ultra2,
 1206 #      ISP 12160 Ultra3 SCSI,
 1207 #      Qlogic ISP 2100 and ISP 2200 1Gb Fibre Channel host adapters.
 1208 #      Qlogic ISP 2300 and ISP 2312 2Gb Fibre Channel host adapters.
 1209 # ispfw: Firmware module for Qlogic host adapters
 1210 # mpt: LSI-Logic MPT/Fusion 53c1020 or 53c1030 Ultra4
 1211 #      or FC9x9 Fibre Channel host adapters.
 1212 # ncr: NCR 53C810, 53C825 self-contained SCSI host adapters.
 1213 # sym: Symbios/Logic 53C8XX family of PCI-SCSI I/O processors:
 1214 #      53C810, 53C810A, 53C815, 53C825,  53C825A, 53C860, 53C875, 
 1215 #      53C876, 53C885,  53C895, 53C895A, 53C896,  53C897, 53C1510D, 
 1216 #      53C1010-33, 53C1010-66.
 1217 # trm: Tekram DC395U/UW/F DC315U adapters.
 1218 # wds: WD7000
 1219 
 1220 #
 1221 # Note that the order is important in order for Buslogic ISA/EISA cards to be
 1222 # probed correctly.
 1223 #
 1224 device          bt
 1225 hint.bt.0.at="isa"
 1226 hint.bt.0.port="0x330"
 1227 device          adv
 1228 hint.adv.0.at="isa"
 1229 device          adw
 1230 device          aha
 1231 hint.aha.0.at="isa"
 1232 device          aic
 1233 hint.aic.0.at="isa"
 1234 device          ahb
 1235 device          ahc
 1236 device          ahd
 1237 device          amd
 1238 device          isp
 1239 hint.isp.0.disable="1"
 1240 hint.isp.0.role="3"
 1241 hint.isp.0.prefer_iomap="1"
 1242 hint.isp.0.prefer_memmap="1"
 1243 hint.isp.0.fwload_disable="1"
 1244 hint.isp.0.ignore_nvram="1"
 1245 hint.isp.0.fullduplex="1"
 1246 hint.isp.0.topology="lport"
 1247 hint.isp.0.topology="nport"
 1248 hint.isp.0.topology="lport-only"
 1249 hint.isp.0.topology="nport-only"
 1250 # we can't get u_int64_t types, nor can we get strings if it's got
 1251 # a leading 0x, hence this silly dodge.
 1252 hint.isp.0.portwnn="w50000000aaaa0000"
 1253 hint.isp.0.nodewnn="w50000000aaaa0001"
 1254 device          ispfw
 1255 device          mpt
 1256 device          ncr
 1257 device          sym
 1258 device          trm
 1259 device          wds
 1260 hint.wds.0.at="isa"
 1261 hint.wds.0.port="0x350"
 1262 hint.wds.0.irq="11"
 1263 hint.wds.0.drq="6"
 1264 
 1265 # The aic7xxx driver will attempt to use memory mapped I/O for all PCI
 1266 # controllers that have it configured only if this option is set. Unfortunately,
 1267 # this doesn't work on some motherboards, which prevents it from being the
 1268 # default.
 1269 options         AHC_ALLOW_MEMIO
 1270 
 1271 # Dump the contents of the ahc controller configuration PROM.
 1272 options         AHC_DUMP_EEPROM
 1273 
 1274 # Bitmap of units to enable targetmode operations.
 1275 options         AHC_TMODE_ENABLE
 1276 
 1277 # Compile in aic79xx debugging code.
 1278 options         AHD_DEBUG
 1279 
 1280 # Aic79xx driver debugging options.   
 1281 # See the ahd(4) manpage
 1282 options         AHD_DEBUG_OPTS=0xFFFFFFFF
 1283 
 1284 # Print human-readable register definitions when debugging
 1285 options         AHD_REG_PRETTY_PRINT
 1286 
 1287 # The adw driver will attempt to use memory mapped I/O for all PCI
 1288 # controllers that have it configured only if this option is set.
 1289 options         ADW_ALLOW_MEMIO
 1290 
 1291 # Options used in dev/isp/ (Qlogic SCSI/FC driver).
 1292 #
 1293 #       ISP_TARGET_MODE         -       enable target mode operation
 1294 #
 1295 options         ISP_TARGET_MODE=1
 1296 
 1297 # Options used in dev/sym/ (Symbios SCSI driver).
 1298 #options        SYM_SETUP_LP_PROBE_MAP  #-Low Priority Probe Map (bits)
 1299                                         # Allows the ncr to take precedence
 1300                                         # 1 (1<<0) -> 810a, 860
 1301                                         # 2 (1<<1) -> 825a, 875, 885, 895
 1302                                         # 4 (1<<2) -> 895a, 896, 1510d 
 1303 #options        SYM_SETUP_SCSI_DIFF     #-HVD support for 825a, 875, 885
 1304                                         # disabled:0 (default), enabled:1
 1305 #options        SYM_SETUP_PCI_PARITY    #-PCI parity checking
 1306                                         # disabled:0, enabled:1 (default)
 1307 #options        SYM_SETUP_MAX_LUN       #-Number of LUNs supported
 1308                                         # default:8, range:[1..64]
 1309 
 1310 # The 'asr' driver provides support for current DPT/Adaptec SCSI RAID
 1311 # controllers (SmartRAID V and VI and later).
 1312 # These controllers require the CAM infrastructure.
 1313 #
 1314 device          asr
 1315 
 1316 # The 'dpt' driver provides support for old DPT controllers (http://www.dpt.com/).
 1317 # These have hardware RAID-{0,1,5} support, and do multi-initiator I/O.
 1318 # The DPT controllers are commonly re-licensed under other brand-names -
 1319 # some controllers by Olivetti, Dec, HP, AT&T, SNI, AST, Alphatronic, NEC and
 1320 # Compaq are actually DPT controllers.
 1321 #
 1322 # See src/sys/dev/dpt for debugging and other subtle options.
 1323 #   DPT_MEASURE_PERFORMANCE Enables a set of (semi)invasive metrics. Various
 1324 #                           instruments are enabled.  The tools in
 1325 #                           /usr/sbin/dpt_* assume these to be enabled.
 1326 #   DPT_HANDLE_TIMEOUTS     Normally device timeouts are handled by the DPT.
 1327 #                           If you ant the driver to handle timeouts, enable
 1328 #                           this option.  If your system is very busy, this
 1329 #                           option will create more trouble than solve.
 1330 #   DPT_TIMEOUT_FACTOR      Used to compute the excessive amount of time to
 1331 #                           wait when timing out with the above option.
 1332 #  DPT_DEBUG_xxxx           These are controllable from sys/dev/dpt/dpt.h
 1333 #  DPT_LOST_IRQ             When enabled, will try, once per second, to catch
 1334 #                           any interrupt that got lost.  Seems to help in some
 1335 #                           DPT-firmware/Motherboard combinations.  Minimal
 1336 #                           cost, great benefit.
 1337 #  DPT_RESET_HBA            Make "reset" actually reset the controller
 1338 #                           instead of fudging it.  Only enable this if you
 1339 #                           are 100% certain you need it.
 1340 
 1341 device          dpt
 1342 
 1343 # DPT options
 1344 #!CAM# options  DPT_MEASURE_PERFORMANCE
 1345 #!CAM# options  DPT_HANDLE_TIMEOUTS
 1346 options         DPT_TIMEOUT_FACTOR=4
 1347 options         DPT_LOST_IRQ
 1348 options         DPT_RESET_HBA
 1349 
 1350 #
 1351 # Compaq "CISS" RAID controllers (SmartRAID 5* series)
 1352 # These controllers have a SCSI-like interface, and require the
 1353 # CAM infrastructure.
 1354 #
 1355 device          ciss
 1356 
 1357 #
 1358 # Intel Integrated RAID controllers.
 1359 # This driver was developed and is maintained by Intel.  Contacts
 1360 # at Intel for this driver are
 1361 # "Kannanthanam, Boji T" <boji.t.kannanthanam@intel.com> and
 1362 # "Leubner, Achim" <achim.leubner@intel.com>.
 1363 #
 1364 device          iir
 1365 
 1366 #
 1367 # Mylex AcceleRAID and eXtremeRAID controllers with v6 and later
 1368 # firmware.  These controllers have a SCSI-like interface, and require
 1369 # the CAM infrastructure.
 1370 #
 1371 device          mly
 1372 
 1373 #
 1374 # Compaq Smart RAID, Mylex DAC960 and AMI MegaRAID controllers.  Only
 1375 # one entry is needed; the code will find and configure all supported
 1376 # controllers.
 1377 #
 1378 device          ida             # Compaq Smart RAID
 1379 device          mlx             # Mylex DAC960
 1380 device          amr             # AMI MegaRAID
 1381 
 1382 #
 1383 # 3ware ATA RAID
 1384 #
 1385 device          twe             # 3ware ATA RAID
 1386 
 1387 #
 1388 # The 'ATA' driver supports all ATA and ATAPI devices, including PC Card
 1389 # devices. You only need one "device ata" for it to find all
 1390 # PCI and PC Card ATA/ATAPI devices on modern machines.
 1391 device          ata
 1392 device          atadisk         # ATA disk drives
 1393 device          atapicd         # ATAPI CDROM drives
 1394 device          atapifd         # ATAPI floppy drives
 1395 device          atapist         # ATAPI tape drives
 1396 device          atapicam        # emulate ATAPI devices as SCSI ditto via CAM
 1397                                 # needs CAM to be present (scbus & pass)
 1398 #
 1399 # For older non-PCI, non-PnPBIOS systems, these are the hints lines to add:
 1400 hint.ata.0.at="isa"
 1401 hint.ata.0.port="0x1f0"
 1402 hint.ata.0.irq="14"
 1403 hint.ata.1.at="isa"
 1404 hint.ata.1.port="0x170"
 1405 hint.ata.1.irq="15"
 1406 
 1407 #
 1408 # The following options are valid on the ATA driver:
 1409 #
 1410 # ATA_STATIC_ID:        controller numbering is static ie depends on location
 1411 #                       else the device numbers are dynamically allocated.
 1412 
 1413 options         ATA_STATIC_ID
 1414 
 1415 #
 1416 # Standard floppy disk controllers and floppy tapes, supports
 1417 # the Y-E DATA External FDD (PC Card)
 1418 #
 1419 device          fdc
 1420 hint.fdc.0.at="isa"
 1421 hint.fdc.0.port="0x3F0"
 1422 hint.fdc.0.irq="6"
 1423 hint.fdc.0.drq="2"
 1424 #
 1425 # FDC_DEBUG enables floppy debugging.  Since the debug output is huge, you
 1426 # gotta turn it actually on by setting the variable fd_debug with DDB,
 1427 # however.
 1428 options         FDC_DEBUG
 1429 #
 1430 # Activate this line if you happen to have an Insight floppy tape.
 1431 # Probing them proved to be dangerous for people with floppy disks only,
 1432 # so it's "hidden" behind a flag:
 1433 #hint.fdc.0.flags="1"
 1434 
 1435 # Specify floppy devices
 1436 hint.fd.0.at="fdc0"
 1437 hint.fd.0.drive="0"
 1438 hint.fd.1.at="fdc0"
 1439 hint.fd.1.drive="1"
 1440 
 1441 #
 1442 # sio: serial ports (see sio(4)), including support for various
 1443 #      PC Card devices, such as Modem and NICs (see etc/defaults/pccard.conf)
 1444 #
 1445 device          sio
 1446 hint.sio.0.at="isa"
 1447 hint.sio.0.port="0x3F8"
 1448 hint.sio.0.flags="0x10"
 1449 hint.sio.0.irq="4"
 1450 
 1451 # Options for sio:
 1452 options         COM_ESP                 # Code for Hayes ESP.
 1453 options         COM_MULTIPORT           # Code for some cards with shared IRQs.
 1454 options         CONSPEED=115200         # Speed for serial console
 1455                                         # (default 9600).
 1456 
 1457 # `flags' specific to sio(4).  See below for flags used by both sio(4) and
 1458 # uart(4).
 1459 #       0x20    force this unit to be the console (unless there is another
 1460 #               higher priority console).  This replaces the COMCONSOLE option.
 1461 #       0x40    reserve this unit for low level console operations.  Do not
 1462 #               access the device in any normal way.
 1463 # PnP `flags'
 1464 #       0x1     disable probing of this device.  Used to prevent your modem
 1465 #               from being attached as a PnP modem.
 1466 # Other flags for sio that aren't documented in the man page.
 1467 #       0x20000 enable hardware RTS/CTS and larger FIFOs.  Only works for
 1468 #               ST16650A-compatible UARTs.
 1469 
 1470 #
 1471 # uart: newbusified driver for serial interfaces.  It consolidates the sio(4),
 1472 #       sab(4) and zs(4) drivers.
 1473 #
 1474 device          uart
 1475 
 1476 # Options for uart(4)
 1477 options         UART_PPS_ON_CTS         # Do time pulse capturing using CTS
 1478                                         # instead of DCD.
 1479 
 1480 # The following hint should only be used for pure ISA devices.  It is not
 1481 # needed otherwise.  Use of hints is strongly discouraged.
 1482 hint.uart.0.at="isa"
 1483 
 1484 # The following 3 hints are used when the UART is a system device (i.e., a
 1485 # console or debug port), but only on platforms that don't have any other
 1486 # means to pass the information to the kernel.  The unit number of the hint
 1487 # is only used to bundle the hints together.  There is no relation to the
 1488 # unit number of the probed UART.
 1489 hint.uart.0.port="0x3f8"
 1490 hint.uart.0.flags="0x10"
 1491 hint.uart.0.baud="115200"
 1492 
 1493 # `flags' for serial drivers that support consoles like sio(4) and uart(4):
 1494 #       0x10    enable console support for this unit.  Other console flags
 1495 #               (if applicable) are ignored unless this is set.  Enabling
 1496 #               console support does not make the unit the preferred console.
 1497 #               Boot with -h or set boot_serial=YES in the loader.  For sio(4)
 1498 #               specifically, the 0x20 flag can also be set (see above).
 1499 #               Currently, at most one unit can have console support; the
 1500 #               first one (in config file order) with this flag set is
 1501 #               preferred.  Setting this flag for sio0 gives the old behaviour.
 1502 #       0x80    use this port for serial line gdb support in ddb.  Also known
 1503 #               as debug port.
 1504 #
 1505 
 1506 # Options for serial drivers that support consoles:
 1507 options         BREAK_TO_DEBUGGER       # A BREAK on a serial console goes to
 1508                                         # ddb, if available.
 1509 
 1510 # Solaris implements a new BREAK which is initiated by a character
 1511 # sequence CR ~ ^b which is similar to a familiar pattern used on
 1512 # Sun servers by the Remote Console.
 1513 options         ALT_BREAK_TO_DEBUGGER
 1514 
 1515 # PCI Universal Communications driver
 1516 # Supports various single and multi port PCI serial cards. Maybe later
 1517 # also the parallel ports on combination serial/parallel cards. New cards
 1518 # can be added in src/sys/dev/puc/pucdata.c.
 1519 #
 1520 # If the PUC_FASTINTR option is used the driver will try to use fast
 1521 # interrupts. The card must then be the only user of that interrupt.
 1522 # Interrupts cannot be shared when using PUC_FASTINTR.
 1523 device          puc
 1524 options         PUC_FASTINTR
 1525 
 1526 #
 1527 # Network interfaces:
 1528 #
 1529 # MII bus support is required for some PCI 10/100 ethernet NICs,
 1530 # namely those which use MII-compliant transceivers or implement
 1531 # tranceiver control interfaces that operate like an MII. Adding
 1532 # "device miibus0" to the kernel config pulls in support for
 1533 # the generic miibus API and all of the PHY drivers, including a
 1534 # generic one for PHYs that aren't specifically handled by an
 1535 # individual driver.
 1536 device          miibus
 1537 
 1538 # an:   Aironet 4500/4800 802.11 wireless adapters. Supports the PCMCIA,
 1539 #       PCI and ISA varieties.
 1540 # awi:  Support for IEEE 802.11 PC Card devices using the AMD Am79C930 and
 1541 #       Harris (Intersil) Chipset with PCnetMobile firmware by AMD.
 1542 # bge:  Support for gigabit ethernet adapters based on the Broadcom
 1543 #       BCM570x family of controllers, including the 3Com 3c996-T,
 1544 #       the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41, and
 1545 #       the embedded gigE NICs on Dell PowerEdge 2550 servers.
 1546 # cm:   Arcnet SMC COM90c26 / SMC COM90c56
 1547 #       (and SMC COM90c66 in '56 compatibility mode) adapters.
 1548 # cnw:  Xircom CNW/Netware Airsurfer PC Card adapter
 1549 # cs:   IBM Etherjet and other Crystal Semi CS89x0-based adapters
 1550 # dc:   Support for PCI fast ethernet adapters based on the DEC/Intel 21143
 1551 #       and various workalikes including:
 1552 #       the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
 1553 #       AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
 1554 #       82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
 1555 #       and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
 1556 #       replaces the old al, ax, dm, pn and mx drivers.  List of brands:
 1557 #       Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110, 
 1558 #       SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX, 
 1559 #       LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
 1560 #       KNE110TX.
 1561 # de:   Digital Equipment DC21040
 1562 # em:   Intel Pro/1000 Gigabit Ethernet 82542, 82543, 82544 based adapters.
 1563 # ep:   3Com 3C509, 3C529, 3C556, 3C562D, 3C563D, 3C572, 3C574X, 3C579, 3C589
 1564 #       and PC Card devices using these chipsets.
 1565 # ex:   Intel EtherExpress Pro/10 and other i82595-based adapters,
 1566 #       Olicom Ethernet PC Card devices.
 1567 # fe:   Fujitsu MB86960A/MB86965A Ethernet
 1568 # fea:  DEC DEFEA EISA FDDI adapter
 1569 # fpa:  Support for the Digital DEFPA PCI FDDI. `device fddi' is also needed.
 1570 # fxp:  Intel EtherExpress Pro/100B
 1571 #       (hint of prefer_iomap can be done to prefer I/O instead of Mem mapping)
 1572 # gx:   Intel Pro/1000 Gigabit Ethernet (82542, 82543-F, 82543-T)
 1573 # lge:  Support for PCI gigabit ethernet adapters based on the Level 1
 1574 #       LXT1001 NetCellerator chipset. This includes the D-Link DGE-500SX,
 1575 #       SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
 1576 # my:   Myson Fast Ethernet (MTD80X, MTD89X)
 1577 # nge:  Support for PCI gigabit ethernet adapters based on the National
 1578 #       Semiconductor DP83820 and DP83821 chipset. This includes the
 1579 #       SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante FriendlyNet
 1580 #       GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the LinkSys
 1581 #       EG1032 and EG1064, the Surecom EP-320G-TX and the Netgear GA622T.
 1582 # pcn:  Support for PCI fast ethernet adapters based on the AMD Am79c97x
 1583 #       chipsets, including the PCnet/FAST, PCnet/FAST+, PCnet/PRO and
 1584 #       PCnet/Home. These were previously handled by the lnc driver (and
 1585 #       still will be if you leave this driver out of the kernel).
 1586 # rl:   Support for PCI fast ethernet adapters based on the RealTek 8129/8139
 1587 #       chipset.  Note that the RealTek driver defaults to using programmed
 1588 #       I/O to do register accesses because memory mapped mode seems to cause
 1589 #       severe lockups on SMP hardware.  This driver also supports the
 1590 #       Accton EN1207D `Cheetah' adapter, which uses a chip called
 1591 #       the MPX 5030/5038, which is either a RealTek in disguise or a
 1592 #       RealTek workalike.  Note that the D-Link DFE-530TX+ uses the RealTek
 1593 #       chipset and is supported by this driver, not the 'vr' driver.
 1594 # sf:   Support for Adaptec Duralink PCI fast ethernet adapters based on the
 1595 #       Adaptec AIC-6915 "starfire" controller.
 1596 #       This includes dual and quad port cards, as well as one 100baseFX card.
 1597 #       Most of these are 64-bit PCI devices, except for one single port
 1598 #       card which is 32-bit.
 1599 # sis:  Support for NICs based on the Silicon Integrated Systems SiS 900,
 1600 #       SiS 7016 and NS DP83815 PCI fast ethernet controller chips.
 1601 # sbsh: Support for Granch SBNI16 SHDSL modem PCI adapters
 1602 # sk:   Support for the SysKonnect SK-984x series PCI gigabit ethernet NICs.
 1603 #       This includes the SK-9841 and SK-9842 single port cards (single mode
 1604 #       and multimode fiber) and the SK-9843 and SK-9844 dual port cards
 1605 #       (also single mode and multimode).
 1606 #       The driver will autodetect the number of ports on the card and
 1607 #       attach each one as a separate network interface.
 1608 # sn:   Support for ISA and PC Card Ethernet devices using the
 1609 #       SMC91C90/92/94/95 chips.
 1610 # ste:  Sundance Technologies ST201 PCI fast ethernet controller, includes
 1611 #       the D-Link DFE-550TX.
 1612 # ti:   Support for PCI gigabit ethernet NICs based on the Alteon Networks
 1613 #       Tigon 1 and Tigon 2 chipsets.  This includes the Alteon AceNIC, the
 1614 #       3Com 3c985, the Netgear GA620 and various others.  Note that you will
 1615 #       probably want to bump up NMBCLUSTERS a lot to use this driver.
 1616 # tl:   Support for the Texas Instruments TNETE100 series 'ThunderLAN'
 1617 #       cards and integrated ethernet controllers.  This includes several
 1618 #       Compaq Netelligent 10/100 cards and the built-in ethernet controllers
 1619 #       in several Compaq Prosignia, Proliant and Deskpro systems.  It also
 1620 #       supports several Olicom 10Mbps and 10/100 boards.
 1621 # tx:   SMC 9432 TX, BTX and FTX cards. (SMC EtherPower II serie)
 1622 # txp:  Support for 3Com 3cR990 cards with the "Typhoon" chipset
 1623 # vr:   Support for various fast ethernet adapters based on the VIA
 1624 #       Technologies VT3043 `Rhine I' and VT86C100A `Rhine II' chips,
 1625 #       including the D-Link DFE530TX (see 'rl' for DFE530TX+), the Hawking 
 1626 #       Technologies PN102TX, and the AOpen/Acer ALN-320.
 1627 # vx:   3Com 3C590 and 3C595
 1628 # wb:   Support for fast ethernet adapters based on the Winbond W89C840F chip.
 1629 #       Note: this is not the same as the Winbond W89C940F, which is a
 1630 #       NE2000 clone.
 1631 # wi:   Lucent WaveLAN/IEEE 802.11 PCMCIA adapters. Note: this supports both
 1632 #       the PCMCIA and ISA cards: the ISA card is really a PCMCIA to ISA
 1633 #       bridge with a PCMCIA adapter plugged into it.
 1634 # xe:   Xircom/Intel EtherExpress Pro100/16 PC Card ethernet controller,
 1635 #       Accton Fast EtherCard-16, Compaq Netelligent 10/100 PC Card,
 1636 #       Toshiba 10/100 Ethernet PC Card, Xircom 16-bit Ethernet + Modem 56
 1637 # xl:   Support for the 3Com 3c900, 3c905, 3c905B and 3c905C (Fast)
 1638 #       Etherlink XL cards and integrated controllers.  This includes the
 1639 #       integrated 3c905B-TX chips in certain Dell Optiplex and Dell
 1640 #       Precision desktop machines and the integrated 3c905-TX chips
 1641 #       in Dell Latitude laptop docking stations.
 1642 #       Also supported: 3Com 3c980(C)-TX, 3Com 3cSOHO100-TX, 3Com 3c450-TX
 1643 
 1644 # Order for ISA/EISA devices is important here
 1645 
 1646 device          cm
 1647 hint.cm.0.at="isa"
 1648 hint.cm.0.port="0x2e0"
 1649 hint.cm.0.irq="9"
 1650 hint.cm.0.maddr="0xdc000"
 1651 device          cs
 1652 hint.cs.0.at="isa"
 1653 hint.cs.0.port="0x300"
 1654 device          ep
 1655 device          ex
 1656 device          fe
 1657 hint.fe.0.at="isa"
 1658 hint.fe.0.port="0x300"
 1659 device          fea
 1660 device          sn
 1661 hint.sn.0.at="isa"
 1662 hint.sn.0.port="0x300"
 1663 hint.sn.0.irq="10"
 1664 device          an
 1665 device          awi
 1666 device          cnw
 1667 device          wi
 1668 device          xe
 1669 
 1670 # PCI Ethernet NICs that use the common MII bus controller code.
 1671 device          dc              # DEC/Intel 21143 and various workalikes
 1672 device          fxp             # Intel EtherExpress PRO/100B (82557, 82558)
 1673 hint.fxp.0.prefer_iomap="0"
 1674 device          my              # Myson Fast Ethernet (MTD80X, MTD89X)
 1675 device          rl              # RealTek 8129/8139
 1676 device          pcn             # AMD Am79C97x PCI 10/100 NICs
 1677 device          sf              # Adaptec AIC-6915 (``Starfire'')
 1678 device          sbsh            # Granch SBNI16 SHDSL modem
 1679 device          sis             # Silicon Integrated Systems SiS 900/SiS 7016
 1680 device          ste             # Sundance ST201 (D-Link DFE-550TX)
 1681 device          tl              # Texas Instruments ThunderLAN
 1682 device          tx              # SMC EtherPower II (83c170 ``EPIC'')
 1683 device          vr              # VIA Rhine, Rhine II
 1684 device          wb              # Winbond W89C840F
 1685 device          xl              # 3Com 3c90x (``Boomerang'', ``Cyclone'')
 1686 
 1687 # PCI Ethernet NICs.
 1688 device          de              # DEC/Intel DC21x4x (``Tulip'')
 1689 device          txp             # 3Com 3cR990 (``Typhoon'')
 1690 device          vx              # 3Com 3c590, 3c595 (``Vortex'')
 1691 
 1692 # PCI Gigabit & FDDI NICs.
 1693 device          bge
 1694 device          gx
 1695 device          lge
 1696 device          nge
 1697 device          sk
 1698 device          ti
 1699 device          fpa
 1700 
 1701 # Use "private" jumbo buffers allocated exclusively for the ti(4) driver.
 1702 # This option is incompatible with the TI_JUMBO_HDRSPLIT option below.
 1703 #options        TI_PRIVATE_JUMBOS
 1704 # Turn on the header splitting option for the ti(4) driver firmware.  This
 1705 # only works for Tigon II chips, and has no effect for Tigon I chips.
 1706 options         TI_JUMBO_HDRSPLIT
 1707 
 1708 # These two options allow manipulating the mbuf cluster size and mbuf size,
 1709 # respectively.  Be very careful with NIC driver modules when changing
 1710 # these from their default values, because that can potentially cause a
 1711 # mismatch between the mbuf size assumed by the kernel and the mbuf size
 1712 # assumed by a module.  The only driver that currently has the ability to
 1713 # detect a mismatch is ti(4).
 1714 options         MCLSHIFT=12     # mbuf cluster shift in bits, 12 == 4KB
 1715 options         MSIZE=512       # mbuf size in bytes
 1716 
 1717 #
 1718 # ATM related options (Cranor version)
 1719 # (note: this driver cannot be used with the HARP ATM stack)
 1720 #
 1721 # The `en' device provides support for Efficient Networks (ENI)
 1722 # ENI-155 PCI midway cards, and the Adaptec 155Mbps PCI ATM cards (ANA-59x0).
 1723 #
 1724 # The `hatm' device provides support for Fore/Marconi HE155 and HE622
 1725 # ATM PCI cards.
 1726 #
 1727 # The `fatm' device provides support for Fore PCA200E ATM PCI cards.
 1728 #
 1729 # The `patm' device provides support for IDT77252 based cards like
 1730 # ProSum's ProATM-155 and ProATM-25 and IDT's evaluation boards.
 1731 #
 1732 # atm device provides generic atm functions and is required for
 1733 # atm devices.
 1734 # NATM enables the netnatm protocol family that can be used to
 1735 # bypass TCP/IP.
 1736 #
 1737 # utopia provides the access to the ATM PHY chips and is required for en,
 1738 # hatm and fatm.
 1739 #
 1740 # the current driver supports only PVC operations (no atm-arp, no multicast).
 1741 # for more details, please read the original documents at
 1742 # http://www.ccrc.wustl.edu/pub/chuck/tech/bsdatm/bsdatm.html
 1743 #
 1744 device          atm
 1745 device          en
 1746 device          fatm                    #Fore PCA200E
 1747 device          hatm                    #Fore/Marconi HE155/622
 1748 device          patm                    #IDT77252 cards (ProATM and IDT)
 1749 device          utopia                  #ATM PHY driver
 1750 options         NATM                    #native ATM
 1751 
 1752 options         LIBMBPOOL               #needed by patm, iatm
 1753 
 1754 #
 1755 # Audio drivers: `pcm', `sbc', `gusc'
 1756 #
 1757 # pcm: PCM audio through various sound cards.
 1758 #
 1759 # This has support for a large number of new audio cards, based on
 1760 # CS423x, OPTi931, Yamaha OPL-SAx, and also for SB16, GusPnP.
 1761 # For more information about this driver and supported cards,
 1762 # see the pcm.4 man page.
 1763 #
 1764 # The flags of the device tells the device a bit more info about the
 1765 # device that normally is obtained through the PnP interface.
 1766 #       bit  2..0   secondary DMA channel;
 1767 #       bit  4      set if the board uses two dma channels;
 1768 #       bit 15..8   board type, overrides autodetection; leave it
 1769 #                   zero if don't know what to put in (and you don't,
 1770 #                   since this is unsupported at the moment...).
 1771 #
 1772 # Supported cards include:
 1773 # Creative SoundBlaster ISA PnP/non-PnP
 1774 # Supports ESS and Avance ISA chips as well.
 1775 # Gravis UltraSound ISA PnP/non-PnP
 1776 # Crystal Semiconductor CS461x/428x PCI
 1777 # Neomagic 256AV (ac97)
 1778 # Most of the more common ISA/PnP sb/mss/ess compatable cards.
 1779 
 1780 device          pcm
 1781 
 1782 # For non-pnp sound cards with no bridge drivers only:
 1783 hint.pcm.0.at="isa"
 1784 hint.pcm.0.irq="10"
 1785 hint.pcm.0.drq="1"
 1786 hint.pcm.0.flags="0x0"
 1787 
 1788 #
 1789 # midi: MIDI interfaces and synthesizers
 1790 #
 1791 
 1792 device          midi
 1793 
 1794 # For non-pnp sound cards with no bridge drivers:
 1795 hint.midi.0.at="isa"
 1796 hint.midi.0.irq="5"
 1797 hint.midi.0.flags="0x0"
 1798 
 1799 # For serial ports (this example configures port 2):
 1800 # TODO: implement generic tty-midi interface so that we can use
 1801 #       other uarts.
 1802 hint.midi.0.at="isa"
 1803 hint.midi.0.port="0x2F8"
 1804 hint.midi.0.irq="3"
 1805 
 1806 #
 1807 # seq: MIDI sequencer
 1808 #
 1809 
 1810 device          seq
 1811 
 1812 # The bridge drivers for sound cards.  These can be separately configured
 1813 # for providing services to the likes of new-midi.
 1814 # When used with 'device pcm' they also provide pcm sound services.
 1815 #
 1816 # sbc:  Creative SoundBlaster ISA PnP/non-PnP
 1817 #       Supports ESS and Avance ISA chips as well.
 1818 # gusc: Gravis UltraSound ISA PnP/non-PnP
 1819 # csa:  Crystal Semiconductor CS461x/428x PCI
 1820 
 1821 # For non-PnP cards:
 1822 device          sbc
 1823 hint.sbc.0.at="isa"
 1824 hint.sbc.0.port="0x220"
 1825 hint.sbc.0.irq="5"
 1826 hint.sbc.0.drq="1"
 1827 hint.sbc.0.flags="0x15"
 1828 device          gusc
 1829 hint.gusc.0.at="isa"
 1830 hint.gusc.0.port="0x220"
 1831 hint.gusc.0.irq="5"
 1832 hint.gusc.0.drq="1"
 1833 hint.gusc.0.flags="0x13"
 1834 
 1835 #
 1836 # Miscellaneous hardware:
 1837 #
 1838 # scd: Sony CD-ROM using proprietary (non-ATAPI) interface
 1839 # mcd: Mitsumi CD-ROM using proprietary (non-ATAPI) interface
 1840 # meteor: Matrox Meteor video capture board
 1841 # bktr: Brooktree bt848/848a/849a/878/879 video capture and TV Tuner board
 1842 # cy: Cyclades serial driver
 1843 # joy: joystick (including IO DATA PCJOY PC Card joystick)
 1844 # rc: RISCom/8 multiport card
 1845 # rp: Comtrol Rocketport(ISA/PCI) - single card
 1846 # si: Specialix SI/XIO 4-32 port terminal multiplexor
 1847 # nmdm: nullmodem terminal driver (see nmdm(4))
 1848 
 1849 # Notes on the Comtrol Rocketport driver:
 1850 #
 1851 # The exact values used for rp0 depend on how many boards you have
 1852 # in the system.  The manufacturer's sample configs are listed as:
 1853 #
 1854 #               device  rp      # core driver support
 1855 #
 1856 #   Comtrol Rocketport ISA single card
 1857 #               hint.rp.0.at="isa"
 1858 #               hint.rp.0.port="0x280"
 1859 #
 1860 #   If instead you have two ISA cards, one installed at 0x100 and the
 1861 #   second installed at 0x180, then you should add the following to
 1862 #   your kernel probe hints:
 1863 #               hint.rp.0.at="isa"
 1864 #               hint.rp.0.port="0x100"
 1865 #               hint.rp.1.at="isa"
 1866 #               hint.rp.1.port="0x180"
 1867 #
 1868 #   For 4 ISA cards, it might be something like this:
 1869 #               hint.rp.0.at="isa"
 1870 #               hint.rp.0.port="0x180"
 1871 #               hint.rp.1.at="isa"
 1872 #               hint.rp.1.port="0x100"
 1873 #               hint.rp.2.at="isa"
 1874 #               hint.rp.2.port="0x340"
 1875 #               hint.rp.3.at="isa"
 1876 #               hint.rp.3.port="0x240"
 1877 #
 1878 #   For PCI cards, you need no hints.
 1879 
 1880 # Mitsumi CD-ROM
 1881 device          mcd      
 1882 hint.mcd.0.at="isa"
 1883 hint.mcd.0.port="0x300"
 1884 # for the Sony CDU31/33A CDROM
 1885 device          scd
 1886 hint.scd.0.at="isa"
 1887 hint.scd.0.port="0x230"
 1888 device          joy                     # PnP aware, hints for nonpnp only
 1889 hint.joy.0.at="isa"
 1890 hint.joy.0.port="0x201"
 1891 device          rc
 1892 hint.rc.0.at="isa"
 1893 hint.rc.0.port="0x220"
 1894 hint.rc.0.irq="12"
 1895 device          rp
 1896 hint.rp.0.at="isa"
 1897 hint.rp.0.port="0x280"
 1898 device          si
 1899 options         SI_DEBUG
 1900 hint.si.0.at="isa"
 1901 hint.si.0.maddr="0xd0000"
 1902 hint.si.0.irq="12"
 1903 device          nmdm
 1904 
 1905 #
 1906 # The `meteor' device is a PCI video capture board. It can also have the
 1907 # following options:
 1908 #   options METEOR_ALLOC_PAGES=xxx      preallocate kernel pages for data entry
 1909 #       figure (ROWS*COLUMN*BYTES_PER_PIXEL*FRAME+PAGE_SIZE-1)/PAGE_SIZE
 1910 #   options METEOR_DEALLOC_PAGES        remove all allocated pages on close(2)
 1911 #   options METEOR_DEALLOC_ABOVE=xxx    remove all allocated pages above the
 1912 #       specified amount. If this value is below the allocated amount no action
 1913 #       taken
 1914 #   options METEOR_SYSTEM_DEFAULT={METEOR_PAL|METEOR_NTSC|METEOR_SECAM}, used
 1915 #       for initialization of fps routine when a signal is not present.
 1916 #
 1917 # The 'bktr' device is a PCI video capture device using the Brooktree
 1918 # bt848/bt848a/bt849a/bt878/bt879 chipset. When used with a TV Tuner it forms a
 1919 # TV card, eg Miro PC/TV, Hauppauge WinCast/TV WinTV, VideoLogic Captivator,
 1920 # Intel Smart Video III, AverMedia, IMS Turbo, FlyVideo.
 1921 #
 1922 # options       OVERRIDE_CARD=xxx
 1923 # options       OVERRIDE_TUNER=xxx
 1924 # options       OVERRIDE_MSP=1
 1925 # options       OVERRIDE_DBX=1
 1926 # These options can be used to override the auto detection
 1927 # The current values for xxx are found in src/sys/dev/bktr/bktr_card.h
 1928 # Using sysctl(8) run-time overrides on a per-card basis can be made
 1929 #
 1930 # options       BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
 1931 # or
 1932 # options       BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
 1933 # Specifes the default video capture mode.
 1934 # This is required for Dual Crystal (28&35Mhz) boards where PAL is used
 1935 # to prevent hangs during initialisation.  eg VideoLogic Captivator PCI.
 1936 #
 1937 # options       BKTR_USE_PLL
 1938 # PAL or SECAM users who have a 28Mhz crystal (and no 35Mhz crystal)
 1939 # must enable PLL mode with this option. eg some new Bt878 cards.
 1940 #
 1941 # options       BKTR_GPIO_ACCESS
 1942 # This enable IOCTLs which give user level access to the GPIO port.
 1943 #
 1944 # options       BKTR_NO_MSP_RESET
 1945 # Prevents the MSP34xx reset. Good if you initialise the MSP in another OS first
 1946 #
 1947 # options       BKTR_430_FX_MODE
 1948 # Switch Bt878/879 cards into Intel 430FX chipset compatibility mode.
 1949 #
 1950 # options       BKTR_SIS_VIA_MODE
 1951 # Switch Bt878/879 cards into SIS/VIA chipset compatibility mode which is
 1952 # needed for some old SiS and VIA chipset motherboards.
 1953 # This also allows Bt878/879 chips to work on old OPTi (<1997) chipset
 1954 # motherboards and motherboards with bad or incomplete PCI 2.1 support.
 1955 # As a rough guess, old = before 1998
 1956 #
 1957 # options       BKTR_NEW_MSP34XX_DRIVER
 1958 # Use new, more complete initialization scheme for the msp34* soundchip.
 1959 # Should fix stereo autodetection if the old driver does only output
 1960 # mono sound.
 1961 
 1962 device          meteor  1
 1963 
 1964 #
 1965 # options       BKTR_USE_FREEBSD_SMBUS
 1966 # Compile with FreeBSD SMBus implementation
 1967 #
 1968 # Brooktree driver has been ported to the new I2C framework. Thus,
 1969 # you'll need to have the following 3 lines in the kernel config.
 1970 #     device smbus
 1971 #     device iicbus
 1972 #     device iicbb
 1973 #     device iicsmb
 1974 # The iic and smb devices are only needed if you want to control other
 1975 # I2C slaves connected to the external connector of some cards.
 1976 #
 1977 device          bktr
 1978 
 1979 #
 1980 # PC Card/PCMCIA
 1981 # (OLDCARD)
 1982 #
 1983 # card: pccard slots
 1984 # pcic: isa/pccard bridge
 1985 #device         pcic
 1986 #hint.pcic.0.at="isa"
 1987 #hint.pcic.1.at="isa"
 1988 #device         card    1
 1989 
 1990 #
 1991 # PC Card/PCMCIA and Cardbus
 1992 # (NEWCARD)
 1993 #
 1994 # Note that NEWCARD and OLDCARD are incompatible.  Do not use both at the same
 1995 # time.
 1996 #
 1997 # pccbb: pci/cardbus bridge implementing YENTA interface
 1998 # pccard: pccard slots
 1999 # cardbus: cardbus slots
 2000 device          cbb
 2001 device          pccard
 2002 device          cardbus
 2003 #device         pcic            ISA attachment currently busted
 2004 #hint.pcic.0.at="isa"
 2005 #hint.pcic.1.at="isa"
 2006 
 2007 #
 2008 # SMB bus
 2009 #
 2010 # System Management Bus support is provided by the 'smbus' device.
 2011 # Access to the SMBus device is via the 'smb' device (/dev/smb*),
 2012 # which is a child of the 'smbus' device.
 2013 #
 2014 # Supported devices:
 2015 # smb           standard io through /dev/smb*
 2016 #
 2017 # Supported SMB interfaces:
 2018 # iicsmb        I2C to SMB bridge with any iicbus interface
 2019 # bktr          brooktree848 I2C hardware interface
 2020 # intpm         Intel PIIX4 (82371AB, 82443MX) Power Management Unit
 2021 # alpm          Acer Aladdin-IV/V/Pro2 Power Management Unit
 2022 # ichsmb        Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
 2023 # viapm         VIA VT82C586B/596B/686A and VT8233 Power Management Unit 
 2024 # amdpm         AMD 756 Power Management Unit
 2025 # nfpm          NVIDIA nForce Power Management Unit
 2026 #
 2027 device          smbus           # Bus support, required for smb below.
 2028 
 2029 device          intpm
 2030 device          alpm
 2031 device          ichsmb
 2032 device          viapm
 2033 device          amdpm
 2034 device          nfpm
 2035 
 2036 device          smb
 2037 
 2038 #
 2039 # I2C Bus
 2040 #
 2041 # Philips i2c bus support is provided by the `iicbus' device.
 2042 #
 2043 # Supported devices:
 2044 # ic    i2c network interface
 2045 # iic   i2c standard io
 2046 # iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
 2047 #
 2048 # Supported interfaces:
 2049 # bktr  brooktree848 I2C software interface
 2050 #
 2051 # Other:
 2052 # iicbb generic I2C bit-banging code (needed by lpbb, bktr)
 2053 #
 2054 device          iicbus          # Bus support, required for ic/iic/iicsmb below.
 2055 device          iicbb
 2056 
 2057 device          ic
 2058 device          iic
 2059 device          iicsmb          # smb over i2c bridge
 2060 
 2061 # Parallel-Port Bus
 2062 #
 2063 # Parallel port bus support is provided by the `ppbus' device.
 2064 # Multiple devices may be attached to the parallel port, devices
 2065 # are automatically probed and attached when found.
 2066 #
 2067 # Supported devices:
 2068 # vpo   Iomega Zip Drive
 2069 #       Requires SCSI disk support ('scbus' and 'da'), best
 2070 #       performance is achieved with ports in EPP 1.9 mode.
 2071 # lpt   Parallel Printer
 2072 # plip  Parallel network interface
 2073 # ppi   General-purpose I/O ("Geek Port") + IEEE1284 I/O
 2074 # pps   Pulse per second Timing Interface
 2075 # lpbb  Philips official parallel port I2C bit-banging interface
 2076 #
 2077 # Supported interfaces:
 2078 # ppc   ISA-bus parallel port interfaces.
 2079 #
 2080 
 2081 options         PPC_PROBE_CHIPSET # Enable chipset specific detection
 2082                                   # (see flags in ppc(4))
 2083 options         DEBUG_1284      # IEEE1284 signaling protocol debug
 2084 options         PERIPH_1284     # Makes your computer act as an IEEE1284
 2085                                 # compliant peripheral
 2086 options         DONTPROBE_1284  # Avoid boot detection of PnP parallel devices
 2087 options         VP0_DEBUG       # ZIP/ZIP+ debug
 2088 options         LPT_DEBUG       # Printer driver debug
 2089 options         PPC_DEBUG       # Parallel chipset level debug
 2090 options         PLIP_DEBUG      # Parallel network IP interface debug
 2091 options         PCFCLOCK_VERBOSE         # Verbose pcfclock driver
 2092 options         PCFCLOCK_MAX_RETRIES=5   # Maximum read tries (default 10)
 2093 
 2094 device          ppc
 2095 hint.ppc.0.at="isa"
 2096 hint.ppc.0.irq="7"
 2097 device          ppbus
 2098 device          vpo
 2099 device          lpt
 2100 device          plip
 2101 device          ppi
 2102 device          pps
 2103 device          lpbb
 2104 device          pcfclock
 2105 
 2106 # Kernel BOOTP support
 2107 
 2108 options         BOOTP           # Use BOOTP to obtain IP address/hostname
 2109                                 # Requires NFSCLIENT and NFS_ROOT
 2110 options         BOOTP_NFSROOT   # NFS mount root filesystem using BOOTP info
 2111 options         BOOTP_NFSV3     # Use NFS v3 to NFS mount root
 2112 options         BOOTP_COMPAT    # Workaround for broken bootp daemons.
 2113 options         BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
 2114 
 2115 #
 2116 # Add tie-ins for a hardware watchdog.  This only enable the hooks;
 2117 # the user must still supply the actual driver.
 2118 #
 2119 options         HW_WDOG
 2120 
 2121 #
 2122 # Add software watchdog routines.  This will add some sysctl OIDs that
 2123 # can be used in combination with an external daemon to create a
 2124 # software-based watchdog solution.
 2125 #
 2126 options         WATCHDOG
 2127 
 2128 #
 2129 # Disable swapping of upages and stack pages.  This option removes all
 2130 # code which actually performs swapping, so it's not possible to turn
 2131 # it back on at run-time.
 2132 #
 2133 # This is sometimes usable for systems which don't have any swap space
 2134 # (see also sysctls "vm.defer_swapspace_pageouts" and
 2135 # "vm.disable_swapspace_pageouts")
 2136 #
 2137 #options        NO_SWAPPING
 2138 
 2139 # Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
 2140 # for sendfile(2) that are used to map file VM pages, and normally
 2141 # default to a quantity that is roughly 16*MAXUSERS+512. You would
 2142 # typically want about 4 of these for each simultaneous file send.
 2143 #
 2144 options         NSFBUFS=1024
 2145 
 2146 #
 2147 # Enable extra debugging code for locks.  This stores the filename and
 2148 # line of whatever acquired the lock in the lock itself, and change a
 2149 # number of function calls to pass around the relevant data.  This is
 2150 # not at all useful unless you are debugging lock code.  Also note
 2151 # that it is likely to break e.g. fstat(1) unless you recompile your
 2152 # userland with -DDEBUG_LOCKS as well.
 2153 #
 2154 options         DEBUG_LOCKS
 2155 
 2156 
 2157 #####################################################################
 2158 # USB support
 2159 # UHCI controller
 2160 device          uhci
 2161 # OHCI controller
 2162 device          ohci
 2163 # EHCI controller
 2164 device          ehci
 2165 # General USB code (mandatory for USB)
 2166 device          usb
 2167 #
 2168 # USB Double Bulk Pipe devices
 2169 device          udbp
 2170 # Generic USB device driver
 2171 device          ugen
 2172 # Human Interface Device (anything with buttons and dials)
 2173 device          uhid
 2174 # USB keyboard
 2175 device          ukbd
 2176 # USB printer
 2177 device          ulpt
 2178 # USB Iomega Zip 100 Drive (Requires scbus and da)
 2179 device          umass
 2180 # USB support for Belkin F5U109 and Magic Control Technology serial adapters
 2181 device          umct
 2182 # USB modem support
 2183 device          umodem
 2184 # USB mouse
 2185 device          ums
 2186 # Diamond Rio 500 Mp3 player
 2187 device          urio
 2188 # USB scanners
 2189 device          uscanner
 2190 # USB serial support
 2191 device          ucom
 2192 # USB support for serial adapters based on the FT8U100AX and FT8U232AM
 2193 device          uftdi
 2194 # USB support for Prolific PL-2303 serial adapters
 2195 device          uplcom
 2196 # USB support for Belkin F5U103 and compatible serial adapters
 2197 device          ubsa
 2198 # USB serial support for DDI pocket's PHS
 2199 device          uvscom
 2200 # USB Visor and Palm devices
 2201 device          uvisor
 2202 
 2203 # USB Fm Radio
 2204 device          ufm
 2205 #
 2206 # ADMtek USB ethernet. Supports the LinkSys USB100TX,
 2207 # the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
 2208 # and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
 2209 # eval board.
 2210 device          aue
 2211 #
 2212 # CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
 2213 # and Netmate II, and the Belkin F5U111.
 2214 device          cue
 2215 #
 2216 # Kawasaki LSI ethernet. Supports the LinkSys USB10T,
 2217 # Entrega USB-NET-E45, Peracom Ethernet Adapter, the
 2218 # 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
 2219 # the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
 2220 # and 2104USB, and the Corega USB-T.
 2221 device          kue
 2222 #
 2223 # RealTek RTL8150 USB to fast ethernet. Supports the Melco LUA-KTX
 2224 # and the GREEN HOUSE GH-USB100B.
 2225 device          rue
 2226 
 2227 # debugging options for the USB subsystem
 2228 #
 2229 options         USB_DEBUG
 2230 
 2231 # options for ukbd:
 2232 options         UKBD_DFLT_KEYMAP        # specify the built-in keymap
 2233 makeoptions     UKBD_DFLT_KEYMAP=it.iso
 2234 
 2235 # options for uplcom:
 2236 options         UPLCOM_INTR_INTERVAL=100        # interrpt pipe interval
 2237                                                 # in milliseconds
 2238 
 2239 # options for uvscom:
 2240 options         UVSCOM_DEFAULT_OPKTSIZE=8       # default output packet size
 2241 options         UVSCOM_INTR_INTERVAL=100        # interrpt pipe interval
 2242                                                 # in milliseconds
 2243 
 2244 #####################################################################
 2245 # FireWire support
 2246 
 2247 device          firewire        # FireWire bus code
 2248 device          sbp             # SCSI over Firewire (Requires scbus and da)
 2249 device          sbp_targ        # SBP-2 Target mode  (Requires scbus and targ)
 2250 device          fwe             # Ethernet over FireWire (non-standard!)
 2251 
 2252 #####################################################################
 2253 # dcons support (Dumb Console Device)
 2254 
 2255 device          dcons                   # dumb console driver
 2256 device          dcons_crom              # FireWire attachment
 2257 options         DCONS_BUF_SIZE=16384    # buffer size
 2258 options         DCONS_POLL_HZ=100       # polling rate
 2259 options         DCONS_FORCE_CONSOLE=0   # force to be the primary console
 2260 options         DCONS_FORCE_GDB=1       # force to be the gdb device
 2261 
 2262 #####################################################################
 2263 # crypto subsystem
 2264 #
 2265 # This is a port of the openbsd crypto framework.  Include this when
 2266 # configuring FAST_IPSEC and when you have a h/w crypto device to accelerate
 2267 # user applications that link to openssl.
 2268 #
 2269 # Drivers are ports from openbsd with some simple enhancements that have
 2270 # been fed back to openbsd.
 2271 
 2272 device          crypto          # core crypto support
 2273 device          cryptodev       # /dev/crypto for access to h/w
 2274 
 2275 device          rndtest         # FIPS 140-2 entropy tester
 2276 
 2277 device          hifn            # Hifn 7951, 7781, etc.
 2278 options         HIFN_DEBUG      # enable debugging support: hw.hifn.debug
 2279 options         HIFN_RNDTEST    # enable rndtest support
 2280 
 2281 device          ubsec           # Broadcom 5501, 5601, 58xx
 2282 options         UBSEC_DEBUG     # enable debugging support: hw.ubsec.debug
 2283 options         UBSEC_RNDTEST   # enable rndtest support
 2284 
 2285 #####################################################################
 2286 
 2287 
 2288 #
 2289 # Embedded system options:
 2290 #
 2291 # An embedded system might want to run something other than init.
 2292 options         INIT_PATH=/sbin/init:/stand/sysinstall
 2293 
 2294 # Debug options
 2295 options         BUS_DEBUG       # enable newbus debugging
 2296 options         DEBUG_VFS_LOCKS # enable vfs lock debugging
 2297 options         SOCKBUF_DEBUG   # enable sockbuf last record/mb tail checking
 2298 
 2299 #####################################################################
 2300 # SYSV IPC KERNEL PARAMETERS
 2301 #
 2302 # Maximum number of entries in a semaphore map.
 2303 options         SEMMAP=31
 2304 
 2305 # Maximum number of System V semaphores that can be used on the system at
 2306 # one time. 
 2307 options         SEMMNI=11
 2308 
 2309 # Total number of semaphores system wide
 2310 options         SEMMNS=61
 2311 
 2312 # Total number of undo structures in system
 2313 options         SEMMNU=31
 2314 
 2315 # Maximum number of System V semaphores that can be used by a single process
 2316 # at one time. 
 2317 options         SEMMSL=61
 2318 
 2319 # Maximum number of operations that can be outstanding on a single System V
 2320 # semaphore at one time. 
 2321 options         SEMOPM=101
 2322 
 2323 # Maximum number of undo operations that can be outstanding on a single
 2324 # System V semaphore at one time. 
 2325 options         SEMUME=11
 2326 
 2327 # Maximum number of shared memory pages system wide.
 2328 options         SHMALL=1025
 2329 
 2330 # Maximum size, in bytes, of a single System V shared memory region. 
 2331 options         SHMMAX=(SHMMAXPGS*PAGE_SIZE+1)
 2332 options         SHMMAXPGS=1025
 2333 
 2334 # Minimum size, in bytes, of a single System V shared memory region. 
 2335 options         SHMMIN=2
 2336 
 2337 # Maximum number of shared memory regions that can be used on the system
 2338 # at one time. 
 2339 options         SHMMNI=33
 2340 
 2341 # Maximum number of System V shared memory regions that can be attached to
 2342 # a single process at one time. 
 2343 options         SHMSEG=9
 2344 
 2345 # Set the amount of time (in seconds) the system will wait before
 2346 # rebooting automatically when a kernel panic occurs.  If set to (-1),
 2347 # the system will wait indefinitely until a key is pressed on the
 2348 # console.
 2349 options         PANIC_REBOOT_WAIT_TIME=16
 2350 
 2351 # Attempt to bypass the buffer cache and put data directly into the
 2352 # userland buffer for read operation when O_DIRECT flag is set on the
 2353 # file.  Both offset and length of the read operation must be
 2354 # multiples of the physical media sector size. 
 2355 #
 2356 #options        DIRECTIO
 2357 
 2358 # Specify a lower limit for the number of swap I/O buffers.  They are
 2359 # (among other things) used when bypassing the buffer cache due to
 2360 # DIRECTIO kernel option enabled and O_DIRECT flag set on file.
 2361 #
 2362 #options        NSWBUF_MIN=120
 2363 
 2364 #####################################################################
 2365 
 2366 # More undocumented options for linting.
 2367 # Note that documenting these are not considered an affront.
 2368 
 2369 options         CAM_DEBUG_DELAY
 2370 
 2371 # VFS cluster debugging.
 2372 options         CLUSTERDEBUG
 2373 
 2374 options         DEBUG
 2375 
 2376 # Kernel filelock debugging.
 2377 options         LOCKF_DEBUG
 2378 
 2379 # System V compatible message queues
 2380 # Please note that the values provided here are used to test kernel
 2381 # building.  The defaults in the sources provide almost the same numbers.
 2382 # MSGSSZ must be a power of 2 between 8 and 1024.
 2383 options         MSGMNB=2049     # Max number of chars in queue
 2384 options         MSGMNI=41       # Max number of message queue identifiers
 2385 options         MSGSEG=2049     # Max number of message segments
 2386 options         MSGSSZ=16       # Size of a message segment
 2387 options         MSGTQL=41       # Max number of messages in system
 2388 
 2389 options         NBUF=512        # Number of buffer headers
 2390 
 2391 options         NMBCLUSTERS=1024        # Number of mbuf clusters
 2392 
 2393 options         SCSI_NCR_DEBUG
 2394 options         SCSI_NCR_MAX_SYNC=10000
 2395 options         SCSI_NCR_MAX_WIDE=1
 2396 options         SCSI_NCR_MYADDR=7
 2397 
 2398 options         SC_DEBUG_LEVEL=5        # Syscons debug level
 2399 options         SC_RENDER_DEBUG # syscons rendering debugging
 2400 
 2401 options         SHOW_BUSYBUFS   # List buffers that prevent root unmount
 2402 options         SLIP_IFF_OPTS
 2403 options         VFS_BIO_DEBUG   # VFS buffer I/O debugging
 2404 
 2405 options         KSTACK_MAX_PAGES=32 # Maximum pages to give the kernel stack
 2406 
 2407 # Yet more undocumented options for linting.
 2408 options         AAC_DEBUG
 2409 # Broken:
 2410 ##options       ASR_MEASURE_PERFORMANCE
 2411 # BKTR_ALLOC_PAGES has no effect except to cause warnings, and
 2412 # BROOKTREE_ALLOC_PAGES hasn't actually been superseded by it, since the
 2413 # driver still mostly spells this option BROOKTREE_ALLOC_PAGES.
 2414 ##options       BKTR_ALLOC_PAGES=(217*4+1)
 2415 options         BROOKTREE_ALLOC_PAGES=(217*4+1)
 2416 options         MAXFILES=999
 2417 # METEOR_TEST_VIDEO has no effect since meteor is broken.
 2418 options         METEOR_TEST_VIDEO
 2419 options         NDEVFSINO=1025
 2420 options         NDEVFSOVERFLOW=32769
 2421 
 2422 # Yet more undocumented options for linting.
 2423 options         VGA_DEBUG

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