The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i386/conf/NOTES

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    1 #
    2 # NOTES -- Lines that can be cut/pasted into kernel and hints configs.
    3 #
    4 # This file contains machine dependent kernel configuration notes.  For
    5 # machine independent notes, look in /sys/conf/NOTES.
    6 #
    7 # $FreeBSD$
    8 #
    9 
   10 #
   11 # We want LINT to cover profiling as well.
   12 profile         2
   13 
   14 
   15 #####################################################################
   16 # SMP OPTIONS:
   17 #
   18 # The apic device enables the use of the I/O APIC for interrupt delivery.
   19 # The apic device can be used in both UP and SMP kernels, but is required
   20 # for SMP kernels.  Thus, the apic device is not strictly an SMP option,
   21 # but it is a prerequisite for SMP.
   22 #
   23 # Notes:
   24 #
   25 # HTT CPUs should only be used if they are enabled in the BIOS.  For
   26 # the ACPI case, ACPI only correctly tells us about any HTT CPUs if
   27 # they are enabled.  However, most HTT systems do not list HTT CPUs
   28 # in the MP Table if they are enabled, thus we guess at the HTT CPUs
   29 # for the MP Table case.  However, we shouldn't try to guess and use
   30 # these CPUs if HTT is disabled.  Thus, HTT guessing is only enabled
   31 # for the MP Table if the user explicitly asks for it via the
   32 # MPTABLE_FORCE_HTT option.  Do NOT use this option if you have HTT
   33 # disabled in your BIOS.
   34 #
   35 # IPI_PREEMPTION instructs the kernel to preempt threads running on other
   36 # CPUS if needed.  Relies on the PREEMPTION option
   37 
   38 # Mandatory:
   39 device          apic                    # I/O apic
   40 
   41 # Optional:
   42 options         MPTABLE_FORCE_HTT       # Enable HTT CPUs with the MP Table
   43 options         IPI_PREEMPTION
   44 
   45 #
   46 # Watchdog routines.
   47 #
   48 options         MP_WATCHDOG
   49 
   50 # Debugging options.
   51 #
   52 options         STOP_NMI                # Stop CPUS using NMI instead of IPI
   53 options         COUNT_XINVLTLB_HITS     # Counters for TLB events
   54 options         COUNT_IPIS              # Per-CPU IPI interrupt counters
   55 
   56 
   57 
   58 #####################################################################
   59 # CPU OPTIONS
   60 
   61 #
   62 # You must specify at least one CPU (the one you intend to run on);
   63 # deleting the specification for CPUs you don't need to use may make
   64 # parts of the system run faster.
   65 #
   66 cpu             I486_CPU
   67 cpu             I586_CPU                # aka Pentium(tm)
   68 cpu             I686_CPU                # aka Pentium Pro(tm)
   69 
   70 #
   71 # Options for CPU features.
   72 #
   73 # CPU_ATHLON_SSE_HACK tries to enable SSE instructions when the BIOS has
   74 # forgotten to enable them.
   75 #
   76 # CPU_BLUELIGHTNING_3X enables triple-clock mode on IBM Blue Lightning
   77 # CPU if CPU supports it.  The default is double-clock mode on
   78 # BlueLightning CPU box.
   79 #
   80 # CPU_BLUELIGHTNING_FPU_OP_CACHE enables FPU operand cache on IBM
   81 # BlueLightning CPU.  It works only with Cyrix FPU, and this option
   82 # should not be used with Intel FPU.
   83 #
   84 # CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1).
   85 #
   86 # CPU_CYRIX_NO_LOCK enables weak locking for the entire address space
   87 # of Cyrix 6x86 and 6x86MX CPUs by setting the NO_LOCK bit of CCR1.
   88 # Otherwise, the NO_LOCK bit of CCR1 is cleared.  (NOTE 3)
   89 #
   90 # CPU_DIRECT_MAPPED_CACHE sets L1 cache of Cyrix 486DLC CPU in direct
   91 # mapped mode.  Default is 2-way set associative mode.
   92 #
   93 # CPU_DISABLE_5X86_LSSER disables load store serialize (i.e., enables
   94 # reorder).  This option should not be used if you use memory mapped
   95 # I/O device(s).
   96 #
   97 # CPU_DISABLE_CMPXCHG disables the CMPXCHG instruction on > i386 IA32
   98 # machines.  VmWare 3.x seems to emulate this instruction poorly, causing
   99 # the guest OS to run very slowly.  This problem appears to be fixed in
  100 # VmWare 4.x, at least in version 4.5.2, so that enabling this option with
  101 # VmWare 4.x will result in locking operations to be 20-30 times slower.
  102 # Enabling this with an SMP kernel will cause the kernel to be unusable.
  103 #
  104 # CPU_DISABLE_SSE explicitly prevents I686_CPU from turning on SSE.
  105 #
  106 # CPU_ELAN enables support for AMDs ElanSC520 CPU.
  107 #    CPU_ELAN_PPS enables precision timestamp code.
  108 #    CPU_ELAN_XTAL sets the clock crystal frequency in Hz.
  109 #
  110 # CPU_ENABLE_LONGRUN enables support for Transmeta Crusoe LongRun
  111 # technology which allows to restrict power consumption of the CPU by
  112 # using group of hw.crusoe.* sysctls.
  113 #
  114 # CPU_FASTER_5X86_FPU enables faster FPU exception handler.
  115 #
  116 # CPU_GEODE is for the SC1100 Geode embedded processor.  This option
  117 # is necessary because the i8254 timecounter is toast.
  118 #
  119 # CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products
  120 # for i386 machines.
  121 #
  122 # CPU_IORT defines I/O clock delay time (NOTE 1).  Default values of
  123 # I/O clock delay time on Cyrix 5x86 and 6x86 are 0 and 7,respectively
  124 # (no clock delay).
  125 #
  126 # CPU_L2_LATENCY specifies the L2 cache latency value.  This option is used
  127 # only when CPU_PPRO2CELERON is defined and Mendocino Celeron is detected.
  128 # The default value is 5.
  129 #
  130 # CPU_LOOP_EN prevents flushing the prefetch buffer if the destination
  131 # of a jump is already present in the prefetch buffer on Cyrix 5x86(NOTE
  132 # 1).
  133 #
  134 # CPU_PPRO2CELERON enables L2 cache of Mendocino Celeron CPUs.  This option
  135 # is useful when you use Socket 8 to Socket 370 converter, because most Pentium
  136 # Pro BIOSs do not enable L2 cache of Mendocino Celeron CPUs.
  137 #
  138 # CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1).
  139 #
  140 # CPU_SOEKRIS enables support www.soekris.com hardware.
  141 #
  142 # CPU_SUSP_HLT enables suspend on HALT.  If this option is set, CPU
  143 # enters suspend mode following execution of HALT instruction.
  144 #
  145 # CPU_UPGRADE_HW_CACHE eliminates unneeded cache flush instruction(s).
  146 #
  147 # CPU_WT_ALLOC enables write allocation on Cyrix 6x86/6x86MX and AMD
  148 # K5/K6/K6-2 CPUs.
  149 #
  150 # CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache
  151 # flush at hold state.
  152 #
  153 # CYRIX_CACHE_REALLY_WORKS enables (1) CPU cache on Cyrix 486 CPUs
  154 # without cache flush at hold state, and (2) write-back CPU cache on
  155 # Cyrix 6x86 whose revision < 2.7 (NOTE 2).
  156 #
  157 # NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY
  158 # Pentiums) from locking up when a LOCK CMPXCHG8B instruction is
  159 # executed.  This option is only needed if I586_CPU is also defined,
  160 # and should be included for any non-Pentium CPU that defines it.
  161 #
  162 # NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors
  163 # which indicates that the 15-16MB range is *definitely* not being
  164 # occupied by an ISA memory hole.
  165 #
  166 # NOTE 1: The options, CPU_BTB_EN, CPU_LOOP_EN, CPU_IORT,
  167 # CPU_LOOP_EN and CPU_RSTK_EN should not be used because of CPU bugs.
  168 # These options may crash your system.
  169 #
  170 # NOTE 2: If CYRIX_CACHE_REALLY_WORKS is not set, CPU cache is enabled
  171 # in write-through mode when revision < 2.7.  If revision of Cyrix
  172 # 6x86 >= 2.7, CPU cache is always enabled in write-back mode.
  173 #
  174 # NOTE 3: This option may cause failures for software that requires
  175 # locked cycles in order to operate correctly.
  176 #
  177 options         CPU_ATHLON_SSE_HACK
  178 options         CPU_BLUELIGHTNING_3X
  179 options         CPU_BLUELIGHTNING_FPU_OP_CACHE
  180 options         CPU_BTB_EN
  181 options         CPU_DIRECT_MAPPED_CACHE
  182 options         CPU_DISABLE_5X86_LSSER
  183 options         CPU_DISABLE_CMPXCHG
  184 #options        CPU_DISABLE_SSE
  185 options         CPU_ELAN
  186 options         CPU_ELAN_PPS
  187 options         CPU_ELAN_XTAL=32768000
  188 options         CPU_ENABLE_LONGRUN
  189 options         CPU_FASTER_5X86_FPU
  190 options         CPU_GEODE
  191 options         CPU_I486_ON_386
  192 options         CPU_IORT
  193 options         CPU_L2_LATENCY=5
  194 options         CPU_LOOP_EN
  195 options         CPU_PPRO2CELERON
  196 options         CPU_RSTK_EN
  197 options         CPU_SOEKRIS
  198 options         CPU_SUSP_HLT
  199 options         CPU_UPGRADE_HW_CACHE
  200 options         CPU_WT_ALLOC
  201 options         CYRIX_CACHE_WORKS
  202 options         CYRIX_CACHE_REALLY_WORKS
  203 #options        NO_F00F_HACK
  204 
  205 # Debug options
  206 options         NPX_DEBUG       # enable npx debugging
  207 
  208 #
  209 # PERFMON causes the driver for Pentium/Pentium Pro performance counters
  210 # to be compiled.  See perfmon(4) for more information.
  211 #
  212 options         PERFMON
  213 
  214 #
  215 # XBOX causes the kernel to be bootable on the Microsoft XBox console system.
  216 # The resulting kernel will auto-detect whether it is being booted on a XBox,
  217 # so kernels compiled with this option will also work on an ordinary PC.
  218 # This option require I686_CPU.
  219 #
  220 # xboxfb includes support for the XBox frame buffer device. It is fully USB-
  221 # keyboard aware, and will only be used if an xbox is detected. This option
  222 # (obviously) requires XBOX support in your kernel.
  223 #
  224 # NOTE: xboxfb currently conflicts with syscons(4); if you have an XBOX and
  225 # include both in your kernel; you will not get any video output. Ordinary
  226 # PC's do not suffer from this.
  227 #
  228 options         XBOX
  229 device          xboxfb
  230 
  231 
  232 #####################################################################
  233 # NETWORKING OPTIONS
  234 
  235 #
  236 # DEVICE_POLLING adds support for mixed interrupt-polling handling
  237 # of network device drivers, which has significant benefits in terms
  238 # of robustness to overloads and responsivity, as well as permitting
  239 # accurate scheduling of the CPU time between kernel network processing
  240 # and other activities.  The drawback is a moderate (up to 1/HZ seconds)
  241 # potential increase in response times.
  242 # It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING
  243 # to achieve smoother behaviour.
  244 # Additionally, you can enable/disable polling at runtime with help of
  245 # the ifconfig(8) utility, and select the CPU fraction reserved to
  246 # userland with the sysctl variable kern.polling.user_frac
  247 # (default 50, range 0..100).
  248 #
  249 # Not all device drivers support this mode of operation at the time of
  250 # this writing.  See polling(4) for more details.
  251 
  252 options         DEVICE_POLLING
  253 
  254 
  255 #####################################################################
  256 # CLOCK OPTIONS
  257 
  258 # The following options are used for debugging clock behavior only, and
  259 # should not be used for production systems.
  260 
  261 # CLK_CALIBRATION_LOOP causes clock calibration to be run in a loop at
  262 # startup until the user presses a key.  (The i8254 clock is always
  263 # calibrated relative to the RTC (mc146818a) and this option causes the
  264 # calibration to be repeated.)
  265 options         CLK_CALIBRATION_LOOP
  266 
  267 # CLK_USE_I8254_CALIBRATION causes the calibrated frequency of the i8254
  268 # clock to actually be used.
  269 options         CLK_USE_I8254_CALIBRATION
  270 
  271 # Provide read/write access to the memory in the clock chip.
  272 device          nvram           # Access to rtc cmos via /dev/nvram
  273 
  274 
  275 #####################################################################
  276 # MISCELLANEOUS DEVICES AND OPTIONS
  277 
  278 # 
  279 # sio: serial ports (see sio(4)), including support for various
  280 #      PC Card devices, such as Modem and NICs
  281 #
  282 device          sio
  283 hint.sio.0.at="isa"
  284 hint.sio.0.port="0x3F8"
  285 hint.sio.0.flags="0x10"
  286 hint.sio.0.irq="4"
  287 
  288 # `flags' specific to sio(4).
  289 #       0x10    enable console support for this unit.  Other console flags
  290 #               (if applicable) are ignored unless this is set.  Enabling
  291 #               console support does not make the unit the preferred console.
  292 #               Boot with -h or set boot_serial=YES in the loader.  For sio(4)
  293 #               specifically, the 0x20 flag can also be set (see above).
  294 #               Currently, at most one unit can have console support; the
  295 #               first one (in config file order) with this flag set is
  296 #               preferred.  Setting this flag for sio0 gives the old behaviour.
  297 #       0x20    force this unit to be the console (unless there is another
  298 #               higher priority console).  This replaces the COMCONSOLE option.
  299 #       0x40    reserve this unit for low level console operations.  Do not
  300 #               access the device in any normal way.
  301 #       0x80    use this port for serial line gdb support in ddb.  Also known
  302 #               as debug port.
  303 # PnP `flags'
  304 #       0x1     disable probing of this device.  Used to prevent your modem
  305 #               from being attached as a PnP modem.
  306 # Other flags for sio that aren't documented in the man page.
  307 #       0x20000 enable hardware RTS/CTS and larger FIFOs.  Only works for
  308 #               ST16650A-compatible UARTs.
  309 
  310 # Options for sio:
  311 options         COM_ESP                 # Code for Hayes ESP.
  312 options         COM_MULTIPORT           # Code for some cards with shared IRQs.
  313 options         CONSPEED=115200         # Speed for serial console
  314                                         # (default 9600).
  315 
  316 device          speaker         #Play IBM BASIC-style noises out your speaker
  317 hint.speaker.0.at="isa"
  318 hint.speaker.0.port="0x61"
  319 device          gzip            #Exec gzipped a.out's.  REQUIRES COMPAT_AOUT!
  320 device          apm_saver       # Requires APM
  321 
  322 
  323 #####################################################################
  324 # HARDWARE BUS CONFIGURATION
  325 
  326 #
  327 # ISA bus
  328 #
  329 device          isa             # Required by npx(4)
  330 
  331 #
  332 # Options for `isa':
  333 #
  334 # AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
  335 # interrupt controller.  This saves about 0.7-1.25 usec for each interrupt.
  336 # This option breaks suspend/resume on some portables.
  337 #
  338 # AUTO_EOI_2 enables the `automatic EOI' feature for the slave 8259A
  339 # interrupt controller.  This saves about 0.7-1.25 usec for each interrupt.
  340 # Automatic EOI is documented not to work for for the slave with the
  341 # original i8259A, but it works for some clones and some integrated
  342 # versions.
  343 #
  344 # MAXMEM specifies the amount of RAM on the machine; if this is not
  345 # specified, FreeBSD will first read the amount of memory from the CMOS
  346 # RAM, so the amount of memory will initially be limited to 64MB or 16MB
  347 # depending on the BIOS.  If the BIOS reports 64MB, a memory probe will
  348 # then attempt to detect the installed amount of RAM.  If this probe
  349 # fails to detect >64MB RAM you will have to use the MAXMEM option.
  350 # The amount is in kilobytes, so for a machine with 128MB of RAM, it would
  351 # be 131072 (128 * 1024).
  352 #
  353 # BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
  354 # reset the CPU for reboot.  This is needed on some systems with broken
  355 # keyboard controllers.
  356 
  357 options         AUTO_EOI_1
  358 #options        AUTO_EOI_2
  359 
  360 options         MAXMEM=(128*1024)
  361 #options        BROKEN_KEYBOARD_RESET
  362 
  363 #
  364 # EISA bus
  365 #
  366 # The EISA bus device is `eisa'.  It provides auto-detection and
  367 # configuration support for all devices on the EISA bus.
  368 
  369 device          eisa
  370 
  371 # By default, only 10 EISA slots are probed, since the slot numbers
  372 # above clash with the configuration address space of the PCI subsystem,
  373 # and the EISA probe is not very smart about this.  This is sufficient
  374 # for most machines, but in particular the HP NetServer LC series comes
  375 # with an onboard AIC7770 dual-channel SCSI controller on EISA slot #11,
  376 # thus you need to bump this figure to 12 for them.
  377 options         EISA_SLOTS=12
  378 
  379 #
  380 # MCA bus:
  381 #
  382 # The MCA bus device is `mca'.  It provides auto-detection and
  383 # configuration support for all devices on the MCA bus.
  384 # No hints are required for MCA.
  385 
  386 device          mca
  387 
  388 #
  389 # PCI bus & PCI options:
  390 #
  391 device          pci
  392 
  393 #
  394 # AGP GART support
  395 device          agp
  396 
  397 
  398 #####################################################################
  399 # HARDWARE DEVICE CONFIGURATION
  400 
  401 # To include support for VGA VESA video modes
  402 options         VESA
  403 
  404 # Turn on extra debugging checks and output for VESA support.
  405 options         VESA_DEBUG
  406 
  407 device          dpms            # DPMS suspend & resume via VESA BIOS
  408 
  409 #
  410 # The Numeric Processing eXtension driver.  This is non-optional.
  411 device          npx
  412 hint.npx.0.flags="0x0"
  413 hint.npx.0.irq="13"
  414 
  415 #
  416 # `flags' for npx0:
  417 #       0x01    don't use the npx registers to optimize bcopy.
  418 #       0x02    don't use the npx registers to optimize bzero.
  419 #       0x04    don't use the npx registers to optimize copyin or copyout.
  420 # The npx registers are normally used to optimize copying and zeroing when
  421 # all of the following conditions are satisfied:
  422 #       I586_CPU is an option
  423 #       the cpu is an i586 (perhaps not a Pentium)
  424 #       the probe for npx0 succeeds
  425 #       INT 16 exception handling works.
  426 # Then copying and zeroing using the npx registers is normally 30-100% faster.
  427 # The flags can be used to control cases where it doesn't work or is slower.
  428 # Setting them at boot time using hints works right (the optimizations
  429 # are not used until later in the bootstrap when npx0 is attached).
  430 # Flag 0x08 automatically disables the i586 optimized routines.
  431 #
  432 
  433 #
  434 # Optional devices:
  435 #
  436 
  437 # PS/2 mouse
  438 device          psm
  439 hint.psm.0.at="atkbdc"
  440 hint.psm.0.irq="12"
  441 
  442 # Options for psm:
  443 options         PSM_HOOKRESUME          #hook the system resume event, useful
  444                                         #for some laptops
  445 options         PSM_RESETAFTERSUSPEND   #reset the device at the resume event
  446 
  447 # The keyboard controller; it controls the keyboard and the PS/2 mouse.
  448 device          atkbdc
  449 hint.atkbdc.0.at="isa"
  450 hint.atkbdc.0.port="0x060"
  451 
  452 # The AT keyboard
  453 device          atkbd
  454 hint.atkbd.0.at="atkbdc"
  455 hint.atkbd.0.irq="1"
  456 
  457 # Options for atkbd:
  458 options         ATKBD_DFLT_KEYMAP       # specify the built-in keymap
  459 makeoptions     ATKBD_DFLT_KEYMAP=jp.106
  460 
  461 # `flags' for atkbd:
  462 #       0x01    Force detection of keyboard, else we always assume a keyboard
  463 #       0x02    Don't reset keyboard, useful for some newer ThinkPads
  464 #       0x03    Force detection and avoid reset, might help with certain
  465 #               dockingstations
  466 #       0x04    Old-style (XT) keyboard support, useful for older ThinkPads
  467 
  468 # Video card driver for VGA adapters.
  469 device          vga
  470 hint.vga.0.at="isa"
  471 
  472 # Options for vga:
  473 # Try the following option if the mouse pointer is not drawn correctly
  474 # or font does not seem to be loaded properly.  May cause flicker on
  475 # some systems.
  476 options         VGA_ALT_SEQACCESS
  477 
  478 # If you can dispense with some vga driver features, you may want to
  479 # use the following options to save some memory.
  480 #options        VGA_NO_FONT_LOADING     # don't save/load font
  481 #options        VGA_NO_MODE_CHANGE      # don't change video modes
  482 
  483 # Older video cards may require this option for proper operation.
  484 options         VGA_SLOW_IOACCESS       # do byte-wide i/o's to TS and GDC regs
  485 
  486 # The following option probably won't work with the LCD displays.
  487 options         VGA_WIDTH90             # support 90 column modes
  488 
  489 # Debugging.
  490 options         VGA_DEBUG
  491 
  492 # 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support.  This will create
  493 # the /dev/3dfx0 device to work with glide implementations.  This should get
  494 # linked to /dev/3dfx and /dev/voodoo.  Note that this is not the same as
  495 # the tdfx DRI module from XFree86 and is completely unrelated.
  496 #
  497 # To enable Linuxulator support, one must also include COMPAT_LINUX in the
  498 # config as well.  The other option is to load both as modules.
  499 
  500 device          tdfx                    # Enable 3Dfx Voodoo support
  501 device          tdfx_linux              # Enable Linuxulator support
  502 
  503 #
  504 # ACPI support using the Intel ACPI Component Architecture reference
  505 # implementation.
  506 #
  507 # ACPI_DEBUG enables the use of the debug.acpi.level and debug.acpi.layer
  508 # kernel environment variables to select initial debugging levels for the
  509 # Intel ACPICA code.  (Note that the Intel code must also have USE_DEBUGGER
  510 # defined when it is built).
  511 #
  512 # ACPI_NO_SEMAPHORES makes the AcpiOs*Semaphore routines a no-op.
  513 #
  514 # Note that building ACPI into the kernel is deprecated; the module is
  515 # normally loaded automatically by the loader.
  516 
  517 device          acpi
  518 options         ACPI_DEBUG
  519 #!options       ACPI_NO_SEMAPHORES
  520 
  521 # ACPI Asus Desktop Extras. (voltage, temp, fan)
  522 device          acpi_aiboost
  523 
  524 # ACPI Asus Extras (LCD backlight/brightness, video output, etc.)
  525 device          acpi_asus
  526 
  527 # ACPI Fujitsu Extras (Buttons)
  528 device          acpi_fujitsu
  529 
  530 # ACPI extras driver for IBM laptops
  531 device         acpi_ibm
  532 
  533 # ACPI Panasonic Extras (LCD backlight/brightness, video output, etc.)
  534 device          acpi_panasonic
  535 
  536 # ACPI Sony extra (LCD brightness)
  537 device          acpi_sony
  538 
  539 # ACPI Toshiba Extras (LCD backlight/brightness, video output, etc.)
  540 device          acpi_toshiba
  541 
  542 # ACPI Video Extensions (LCD backlight/brightness, video output, etc.)
  543 device          acpi_video
  544 
  545 # ACPI Docking Station
  546 device          acpi_dock
  547 
  548 # The cpufreq(4) driver provides support for non-ACPI CPU frequency control
  549 device          cpufreq
  550 
  551 # Direct Rendering modules for 3D acceleration.
  552 device          drm             # DRM core module required by DRM drivers
  553 device          i915drm         # Intel i830 through i915
  554 device          mach64drm       # ATI Rage Pro, Rage Mobility P/M, Rage XL
  555 device          mgadrm          # AGP Matrox G200, G400, G450, G550
  556 device          r128drm         # ATI Rage 128
  557 device          radeondrm       # ATI Radeon
  558 device          savagedrm       # S3 Savage3D, Savage4
  559 device          sisdrm          # SiS 300/305, 540, 630
  560 device          tdfxdrm         # 3dfx Voodoo 3/4/5 and Banshee
  561 options         DRM_DEBUG       # Include debug printfs (slow)
  562 
  563 #
  564 # mse: Logitech and ATI InPort bus mouse ports
  565 
  566 device          mse
  567 hint.mse.0.at="isa"
  568 hint.mse.0.port="0x23c"
  569 hint.mse.0.irq="5"
  570 
  571 #
  572 # Network interfaces:
  573 #
  574 
  575 # ar:   Arnet SYNC/570i hdlc sync 2/4 port V.35/X.21 serial driver
  576 #       (requires sppp)
  577 # arl:  Aironet Arlan 655 wireless adapters.
  578 # ath:  Atheros a/b/g WiFi adapters (requires ath_hal and wlan)
  579 # ce:   Cronyx Tau-PCI/32 sync single/dual port G.703/E1 serial adaptor
  580 #       with 32 HDLC subchannels (requires sppp (default), or NETGRAPH if
  581 #       NETGRAPH_CRONYX is configured)
  582 # cp:   Cronyx Tau-PCI sync single/dual/four port
  583 #       V.35/RS-232/RS-530/RS-449/X.21/G.703/E1/E3/T3/STS-1
  584 #       serial adaptor (requires sppp (default), or NETGRAPH if
  585 #       NETGRAPH_CRONYX is configured)
  586 # cs:   IBM Etherjet and other Crystal Semi CS89x0-based adapters
  587 # ctau: Cronyx Tau sync dual port V.35/RS-232/RS-530/RS-449/X.21/G.703/E1
  588 #       serial adaptor (requires sppp (default), or NETGRAPH if
  589 #       NETGRAPH_CRONYX is configured)
  590 # cx:   Cronyx Sigma multiport sync/async adapter (requires sppp (default),
  591 #       or NETGRAPH if NETGRAPH_CRONYX is configured)
  592 # ed:   Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503
  593 #       HP PC Lan+, various PC Card devices
  594 #       (requires miibus)
  595 # ie:   AT&T StarLAN 10 and EN100; 3Com 3C507; unknown NI5210;
  596 #       Intel EtherExpress
  597 # ipw:  Intel PRO/Wireless 2100 IEEE 802.11 adapter
  598 # iwi:  Intel PRO/Wireless 2200BG/2225BG/2915ABG IEEE 802.11 adapters
  599 # nfe:  nVidia nForce MCP on-board Ethernet Networking (BSD open source)
  600 # nve:  nVidia nForce MCP on-board Ethernet Networking
  601 # oltr: Olicom ISA token-ring adapters OC-3115, OC-3117, OC-3118 and OC-3133.
  602 #       Olicom PCI token-ring adapters OC-3136, OC-3137, OC-3139, OC-3140,
  603 #       OC-3141, OC-3540 and OC-3250.
  604 # ral:  Ralink Technology IEEE 802.11 wireless adapter
  605 # sbni: Granch SBNI12-xx ISA and PCI adapters
  606 # sr:   RISCom/N2 hdlc sync 1/2 port V.35/X.21 serial driver (requires sppp)
  607 # ural: Ralink Technology RT2500USB IEEE 802.11 wireless adapter
  608 # wl:   Lucent Wavelan (ISA card only).
  609 # wpi:  Intel 3945ABG Wireless LAN controller
  610 
  611 # Order for ISA/EISA devices is important here
  612 
  613 device          ar
  614 hint.ar.0.at="isa"
  615 hint.ar.0.port="0x300"
  616 hint.ar.0.irq="10"
  617 hint.ar.0.maddr="0xd0000"
  618 device          arl
  619 hint.arl.0.at="isa"
  620 hint.arl.0.irq="9"
  621 hint.arl.0.maddr="0xd0000"
  622 device          ce
  623 device          cp
  624 device          cs
  625 hint.cs.0.at="isa"
  626 hint.cs.0.port="0x300"
  627 device          ctau
  628 hint.ctau.0.at="isa"
  629 hint.ctau.0.port="0x240"
  630 hint.ctau.0.irq="15"
  631 hint.ctau.0.drq="7"
  632 device          cx
  633 hint.cx.0.at="isa"
  634 hint.cx.0.port="0x240"
  635 hint.cx.0.irq="15"
  636 hint.cx.0.drq="7"
  637 #options        NETGRAPH_CRONYX         # Enable NETGRAPH support for Cronyx adapter(s)
  638 device          ed
  639 options         ED_3C503
  640 options         ED_HPP
  641 options         ED_SIC
  642 hint.ed.0.at="isa"
  643 hint.ed.0.port="0x280"
  644 hint.ed.0.irq="5"
  645 hint.ed.0.maddr="0xd8000"
  646 device          ie                      # Hints only required for Starlan
  647 hint.ie.2.at="isa"
  648 hint.ie.2.port="0x300"
  649 hint.ie.2.irq="5"
  650 hint.ie.2.maddr="0xd0000"
  651 device          iwi
  652 device          ipw
  653 # Hint for the i386-only ISA front-end of le(4).
  654 hint.le.0.at="isa"
  655 hint.le.0.port="0x280"
  656 hint.le.0.irq="10"
  657 hint.le.0.drq="0"
  658 device          nfe             # nVidia nForce MCP on-board Ethernet Networking
  659 device          nve             # nVidia nForce MCP on-board Ethernet Networking
  660 device          oltr
  661 hint.oltr.0.at="isa"
  662 device          ral
  663 device          sbni
  664 hint.sbni.0.at="isa"
  665 hint.sbni.0.port="0x210"
  666 hint.sbni.0.irq="0xefdead"
  667 hint.sbni.0.flags="0"
  668 device          sr
  669 hint.sr.0.at="isa"
  670 hint.sr.0.port="0x300"
  671 hint.sr.0.irq="5"
  672 hint.sr.0.maddr="0xd0000"
  673 device          ural
  674 device          wl
  675 hint.wl.0.at="isa"
  676 hint.wl.0.port="0x300"
  677 options         WLCACHE         # enables the signal-strength cache
  678 options         WLDEBUG         # enables verbose debugging output
  679 device          wpi
  680 
  681 device          ath
  682 device          ath_hal         # Atheros HAL (includes binary component)
  683 #device         ath_rate_amrr   # AMRR rate control for ath driver
  684 #device         ath_rate_onoe   # Onoe rate control for ath driver
  685 device          ath_rate_sample # SampleRate rate control for the ath driver
  686 #device         wlan            # 802.11 layer
  687 
  688 #
  689 # ATA raid adapters
  690 #
  691 device          pst
  692 
  693 #
  694 # Areca 11xx and 12xx series of SATA II RAID controllers.
  695 # CAM is required.
  696 #
  697 device          arcmsr          # Areca SATA II RAID
  698 
  699 #
  700 # 3ware 9000 series PATA/SATA RAID controller driver and options.
  701 # The driver is implemented as a SIM, and so, needs the CAM infrastructure.
  702 #
  703 options         TWA_DEBUG               # 0-10; 10 prints the most messages.
  704 options         TWA_FLASH_FIRMWARE      # firmware image bundled when defined.
  705 device          twa                     # 3ware 9000 series PATA/SATA RAID
  706 
  707 #
  708 # SCSI host adapters:
  709 #
  710 # ncv: NCR 53C500 based SCSI host adapters.
  711 # nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters.
  712 # stg: TMC 18C30, 18C50 based SCSI host adapters.
  713 
  714 device          ncv
  715 device          nsp
  716 device          stg
  717 hint.stg.0.at="isa"
  718 hint.stg.0.port="0x140"
  719 hint.stg.0.port="11"
  720 
  721 #
  722 # Adaptec FSA RAID controllers, including integrated DELL controllers,
  723 # the Dell PERC 2/QC and the HP NetRAID-4M
  724 device          aac
  725 device          aacp    # SCSI Passthrough interface (optional, CAM required)
  726 
  727 # The 'asr' driver provides support for current DPT/Adaptec SCSI RAID
  728 # controllers (SmartRAID V and VI and later).
  729 # These controllers require the CAM infrastructure.
  730 #
  731 device          asr
  732 
  733 #
  734 # Highpoint RocketRAID 182x.
  735 device          hptmv
  736 
  737 #
  738 # Highpoint RocketRAID.  Supports RR172x, RR222x, RR2240, RR232x, RR2340,
  739 # RR2210, RR174x, RR2522, RR231x, RR230x.
  740 device          hptrr
  741 
  742 #
  743 # Highpoint RocketRaid 3xxx series SATA RAID
  744 device          hptiop
  745 
  746 #
  747 # IBM (now Adaptec) ServeRAID controllers
  748 device          ips
  749 
  750 #
  751 # SafeNet crypto driver: can be moved to the MI NOTES as soon as
  752 # it's tested on a big-endian machine
  753 #
  754 device          safe            # SafeNet 1141
  755 options         SAFE_DEBUG      # enable debugging support: hw.safe.debug
  756 options         SAFE_RNDTEST    # enable rndtest support
  757 
  758 #
  759 # glxsb is a driver for the Security Block in AMD Geode LX processors.
  760 # Requires 'device crypto'.
  761 #
  762 device          glxsb           # AMD Geode LX Security Block
  763 
  764 #####################################################################
  765 
  766 #
  767 # Miscellaneous hardware:
  768 #
  769 # apm: Laptop Advanced Power Management (experimental)
  770 # ipmi: Intelligent Platform Management Interface
  771 # pmtimer: Timer device driver for power management events (APM or ACPI)
  772 # smapi: System Management Application Program Interface driver
  773 # smbios: DMI/SMBIOS entry point
  774 # vpd: Vital Product Data kernel interface
  775 # cy: Cyclades serial driver
  776 # digi: Digiboard driver
  777 # spic: Sony Programmable I/O controller (VAIO notebooks)
  778 
  779 # Notes on APM
  780 #  The flags takes the following meaning for apm0:
  781 #    0x0020  Statclock is broken.
  782 
  783 # Notes on the Specialix SI/XIO driver:
  784 #  The host card is memory, not IO mapped.
  785 #  The Rev 1 host cards use a 64K chunk, on a 32K boundary.
  786 #  The Rev 2 host cards use a 32K chunk, on a 32K boundary.
  787 #  The cards can use an IRQ of 11, 12 or 15.
  788 
  789 # Notes on the Sony Programmable I/O controller
  790 #  This is a temporary driver that should someday be replaced by something
  791 #  that hooks into the ACPI layer.  The device is hooked to the PIIX4's
  792 #  General Device 10 decoder, which means you have to fiddle with PCI
  793 #  registers to map it in, even though it is otherwise treated here as
  794 #  an ISA device.  At the moment, the driver polls, although the device
  795 #  is capable of generating interrupts.  It largely undocumented.
  796 #  The port location in the hint is where you WANT the device to be
  797 #  mapped.  0x10a0 seems to be traditional.  At the moment the jogdial
  798 #  is the only thing truly supported, but apparently a fair percentage
  799 #  of the Vaio extra features are controlled by this device.
  800 
  801 device          apm
  802 hint.apm.0.flags="0x20"
  803 device          ipmi
  804 device          smapi
  805 device          smbios
  806 device          vpd
  807 device          pmtimer                 # Adjust system timer at wakeup time
  808 device          cy
  809 options         CY_PCI_FASTINTR         # Use with cy_pci unless irq is shared
  810 hint.cy.0.at="isa"
  811 hint.cy.0.irq="10"
  812 hint.cy.0.maddr="0xd4000"
  813 hint.cy.0.msize="0x2000"
  814 device          digi
  815 hint.digi.0.at="isa"
  816 hint.digi.0.port="0x104"
  817 hint.digi.0.maddr="0xd0000"
  818 # BIOS & FEP/OS components of device digi.
  819 device          digi_CX
  820 device          digi_CX_PCI
  821 device          digi_EPCX
  822 device          digi_EPCX_PCI
  823 device          digi_Xe
  824 device          digi_Xem
  825 device          digi_Xr
  826 # Parallel (8255 PPI) basic I/O (mode 0) port (e.g. Advantech PCL-724)
  827 device          pbio
  828 hint.pbio.0.at="isa"
  829 hint.pbio.0.port="0x360"
  830 device          spic
  831 hint.spic.0.at="isa"
  832 hint.spic.0.port="0x10a0"
  833 # HOT1 Xilinx 6200 card (http://www.vcc.com/)
  834 device          xrpu
  835 
  836 #
  837 # Laptop/Notebook options:
  838 #
  839 # See also:
  840 #  apm under `Miscellaneous hardware'
  841 # above.
  842 
  843 # For older notebooks that signal a powerfail condition (external
  844 # power supply dropped, or battery state low) by issuing an NMI:
  845 
  846 options         POWERFAIL_NMI   # make it beep instead of panicing
  847 
  848 #
  849 # I2C Bus
  850 #
  851 # Philips i2c bus support is provided by the `iicbus' device.
  852 #
  853 # Supported interfaces:
  854 # pcf   Philips PCF8584 ISA-bus controller
  855 #
  856 device          pcf
  857 hint.pcf.0.at="isa"
  858 hint.pcf.0.port="0x320"
  859 hint.pcf.0.irq="5"
  860 
  861 #
  862 # Hardware watchdog timers:
  863 #
  864 # ichwd: Intel ICH watchdog timer
  865 #
  866 device          ichwd
  867 
  868 #
  869 # Temperature sensors:
  870 #
  871 # coretemp: on-die sensor on Intel Core and newer CPUs
  872 #
  873 device          coretemp
  874 
  875 #---------------------------------------------------------------------------
  876 # ISDN4BSD
  877 #
  878 # See /usr/share/examples/isdn/ROADMAP for an introduction to isdn4bsd.
  879 #
  880 # i4b passive ISDN cards support contains the following hardware drivers:
  881 #
  882 #       isic  - Siemens/Infineon ISDN ISAC/HSCX/IPAC chipset driver
  883 #       iwic  - Winbond W6692 PCI bus ISDN S/T interface controller
  884 #       ifpi  - AVM Fritz!Card PCI driver
  885 #       ifpi2  - AVM Fritz!Card PCI version 2 driver
  886 #       ihfc  - Cologne Chip HFC ISA/ISA-PnP chipset driver
  887 #       ifpnp - AVM Fritz!Card PnP driver
  888 #       itjc  - Siemens ISAC / TJNet Tiger300/320 chipset
  889 #
  890 # i4b active ISDN cards support contains the following hardware drivers:
  891 #
  892 #       iavc  - AVM B1 PCI, AVM B1 ISA, AVM T1
  893 #
  894 # Note that the ``options'' (if given) and ``device'' lines must BOTH
  895 # be uncommented to enable support for a given card !
  896 #
  897 # In addition to a hardware driver (and probably an option) the mandatory
  898 # ISDN protocol stack devices and the mandatory support device must be
  899 # enabled as well as one or more devices from the optional devices section.
  900 #
  901 #---------------------------------------------------------------------------
  902 #       isic driver (Siemens/Infineon chipsets)
  903 #
  904 device  isic
  905 #
  906 # ISA bus non-PnP Cards:
  907 # ----------------------
  908 #
  909 # Teles S0/8 or Niccy 1008
  910 options         TEL_S0_8
  911 hint.isic.0.at="isa"
  912 hint.isic.0.maddr="0xd0000"
  913 hint.isic.0.irq="5"
  914 hint.isic.0.flags="1"
  915 #
  916 # Teles S0/16 or Creatix ISDN-S0 or Niccy 1016
  917 options         TEL_S0_16
  918 hint.isic.0.at="isa"
  919 hint.isic.0.port="0xd80"
  920 hint.isic.0.maddr="0xd0000"
  921 hint.isic.0.irq="5"
  922 hint.isic.0.flags="2"
  923 #
  924 # Teles S0/16.3
  925 options         TEL_S0_16_3
  926 hint.isic.0.at="isa"
  927 hint.isic.0.port="0xd80"
  928 hint.isic.0.irq="5"
  929 hint.isic.0.flags="3"
  930 #
  931 # AVM A1 or AVM Fritz!Card
  932 options         AVM_A1
  933 hint.isic.0.at="isa"
  934 hint.isic.0.port="0x340"
  935 hint.isic.0.irq="5"
  936 hint.isic.0.flags="4"
  937 #
  938 # USRobotics Sportster ISDN TA intern
  939 options         USR_STI
  940 hint.isic.0.at="isa"
  941 hint.isic.0.port="0x268"
  942 hint.isic.0.irq="5"
  943 hint.isic.0.flags="7"
  944 #
  945 # ITK ix1 Micro ( < V.3, non-PnP version )
  946 options         ITKIX1
  947 hint.isic.0.at="isa"
  948 hint.isic.0.port="0x398"
  949 hint.isic.0.irq="10"
  950 hint.isic.0.flags="18"
  951 #
  952 # ELSA PCC-16
  953 options         ELSA_PCC16
  954 hint.isic.0.at="isa"
  955 hint.isic.0.port="0x360"
  956 hint.isic.0.irq="10"
  957 hint.isic.0.flags="20"
  958 #
  959 # ISA bus PnP Cards:
  960 # ------------------
  961 #
  962 # Teles S0/16.3 PnP
  963 options         TEL_S0_16_3_P
  964 #
  965 # Creatix ISDN-S0 P&P
  966 options         CRTX_S0_P
  967 #
  968 # Dr. Neuhaus Niccy Go@
  969 options         DRN_NGO
  970 #
  971 # Sedlbauer Win Speed
  972 options         SEDLBAUER
  973 #
  974 # Dynalink IS64PH
  975 options         DYNALINK
  976 #
  977 # ELSA QuickStep 1000pro ISA
  978 options         ELSA_QS1ISA
  979 #
  980 # Siemens I-Surf 2.0
  981 options         SIEMENS_ISURF2
  982 #
  983 # Asuscom ISDNlink 128K ISA
  984 options         ASUSCOM_IPAC
  985 #
  986 # Eicon Diehl DIVA 2.0 and 2.02
  987 options         EICON_DIVA
  988 #
  989 # Compaq Microcom 610 ISDN card (Compaq series PSB2222I)
  990 options         COMPAQ_M610
  991 #
  992 # PCI bus Cards:
  993 # --------------
  994 #
  995 # ELSA MicroLink ISDN/PCI (same as ELSA QuickStep 1000pro PCI)
  996 options         ELSA_QS1PCI
  997 #
  998 #---------------------------------------------------------------------------
  999 #       ifpnp driver for AVM Fritz!Card PnP
 1000 #
 1001 # AVM Fritz!Card PnP
 1002 device          ifpnp
 1003 #
 1004 #---------------------------------------------------------------------------
 1005 #       ihfc driver for Cologne Chip ISA chipsets (experimental!)
 1006 #
 1007 # Teles 16.3c ISA PnP
 1008 # AcerISDN P10 ISA PnP
 1009 # TELEINT ISDN SPEED No.1
 1010 device          ihfc
 1011 #
 1012 #---------------------------------------------------------------------------
 1013 #       ifpi driver for AVM Fritz!Card PCI
 1014 #
 1015 # AVM Fritz!Card PCI
 1016 device          ifpi
 1017 #
 1018 #---------------------------------------------------------------------------
 1019 #       ifpi2 driver for AVM Fritz!Card PCI version 2
 1020 #
 1021 # AVM Fritz!Card PCI version 2
 1022 device          ifpi2
 1023 #
 1024 #---------------------------------------------------------------------------
 1025 #       iwic driver for Winbond W6692 chipset
 1026 #
 1027 # ASUSCOM P-IN100-ST-D (and other Winbond W6692 based cards)
 1028 device          iwic
 1029 #
 1030 #---------------------------------------------------------------------------
 1031 #       itjc driver for Siemens ISAC / TJNet Tiger300/320 chipset
 1032 #
 1033 # Traverse Technologies NETjet-S
 1034 # Teles PCI-TJ
 1035 device          itjc
 1036 #
 1037 #---------------------------------------------------------------------------
 1038 #       iavc driver (AVM active cards, needs i4bcapi driver!)
 1039 #
 1040 device          iavc
 1041 #
 1042 # AVM B1 ISA bus (PnP mode not supported!)
 1043 # ----------------------------------------
 1044 hint.iavc.0.at="isa"
 1045 hint.iavc.0.port="0x150"
 1046 hint.iavc.0.irq="5"
 1047 #
 1048 #---------------------------------------------------------------------------
 1049 #       ISDN Protocol Stack - mandatory for all hardware drivers
 1050 #
 1051 # Q.921 / layer 2 - i4b passive cards D channel handling
 1052 device          i4bq921
 1053 #
 1054 # Q.931 / layer 3 - i4b passive cards D channel handling
 1055 device          i4bq931
 1056 #
 1057 # layer 4 - i4b common passive and active card handling
 1058 device          i4b
 1059 #
 1060 #---------------------------------------------------------------------------
 1061 #       ISDN devices - mandatory for all hardware drivers
 1062 #
 1063 # userland driver to do ISDN tracing (for passive cards only)
 1064 device          i4btrc
 1065 options         NI4BTRC=4
 1066 #
 1067 # userland driver to control the whole thing
 1068 device          i4bctl
 1069 #
 1070 #---------------------------------------------------------------------------
 1071 #       ISDN devices - optional
 1072 #
 1073 # userland driver for access to raw B channel
 1074 device          i4brbch
 1075 options         NI4BRBCH=4
 1076 #
 1077 # userland driver for telephony
 1078 device          i4btel
 1079 options         NI4BTEL=2
 1080 #
 1081 #XXXBZ# IPR and ISPPP are not usable until I4B is locked.
 1082 # network driver for IP over raw HDLC ISDN
 1083 #XXXBZ#device           i4bipr
 1084 #XXXBZ#options  NI4BIPR=4
 1085 # enable VJ header compression detection for ipr i/f
 1086 #XXXBZ#options  IPR_VJ
 1087 # enable logging of the first n IP packets to isdnd (n=32 here)
 1088 #XXXBZ#options  IPR_LOG=32
 1089 #
 1090 # network driver for sync PPP over ISDN; requires an equivalent
 1091 # number of sppp device to be configured
 1092 #XXXBZ#device           i4bisppp
 1093 #XXXBZ#options  NI4BISPPP=4
 1094 #
 1095 # B-channel interface to the netgraph subsystem
 1096 #XXXBZ#device           i4bing
 1097 #XXXBZ#options  NI4BING=2
 1098 #
 1099 # CAPI driver needed for active ISDN cards (see iavc driver above)
 1100 device          i4bcapi
 1101 #
 1102 #---------------------------------------------------------------------------
 1103 
 1104 #
 1105 # System Management Bus (SMB)
 1106 #
 1107 options         ENABLE_ALART            # Control alarm on Intel intpm driver
 1108 
 1109 #
 1110 # Set the number of PV entries per process.  Increasing this can
 1111 # stop panics related to heavy use of shared memory.  However, that can
 1112 # (combined with large amounts of physical memory) cause panics at
 1113 # boot time due the kernel running out of VM space.
 1114 #
 1115 # If you're tweaking this, you might also want to increase the sysctls
 1116 # "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
 1117 #
 1118 # The value below is the one more than the default.
 1119 #
 1120 options         PMAP_SHPGPERPROC=201
 1121 
 1122 #
 1123 # Change the size of the kernel virtual address space.  Due to
 1124 # constraints in loader(8) on i386, this must be a multiple of 4.
 1125 # 256 = 1 GB of kernel address space.  Increasing this also causes
 1126 # a reduction of the address space in user processes.  512 splits
 1127 # the 4GB cpu address space in half (2GB user, 2GB kernel).  For PAE
 1128 # kernels, the value will need to be double non-PAE.  A value of 1024
 1129 # for PAE kernels is necessary to split the address space in half.
 1130 # This will likely need to be increased to handle memory sizes >4GB.
 1131 # PAE kernels default to a value of 512.
 1132 #
 1133 options         KVA_PAGES=260
 1134 
 1135 
 1136 #####################################################################
 1137 # ABI Emulation
 1138 
 1139 # Enable iBCS2 runtime support for SCO and ISC binaries
 1140 options         IBCS2
 1141 
 1142 # Emulate spx device for client side of SVR3 local X interface
 1143 options         SPX_HACK
 1144 
 1145 # Enable Linux ABI emulation
 1146 options         COMPAT_LINUX
 1147 
 1148 # Enable i386 a.out binary support
 1149 options         COMPAT_AOUT
 1150 
 1151 # Enable the linux-like proc filesystem support (requires COMPAT_LINUX
 1152 # and PSEUDOFS)
 1153 options         LINPROCFS
 1154 
 1155 #Enable the linux-like sys filesystem support (requires COMPAT_LINUX
 1156 # and PSEUDOFS)
 1157 options         LINSYSFS
 1158 
 1159 #
 1160 # SysVR4 ABI emulation
 1161 #
 1162 # The svr4 ABI emulator can be statically compiled into the kernel or loaded as
 1163 # a KLD module.
 1164 # The STREAMS network emulation code can also be compiled statically or as a
 1165 # module.  If loaded as a module, it must be loaded before the svr4 module
 1166 # (the /usr/sbin/svr4 script does this for you).  If compiling statically,
 1167 # the `streams' device must be configured into any kernel which also
 1168 # specifies COMPAT_SVR4.  It is possible to have a statically-configured
 1169 # STREAMS device and a dynamically loadable svr4 emulator;  the /usr/sbin/svr4
 1170 # script understands that it doesn't need to load the `streams' module under
 1171 # those circumstances.
 1172 # Caveat:  At this time, `options KTRACE' is required for the svr4 emulator
 1173 # (whether static or dynamic).
 1174 #
 1175 options         COMPAT_SVR4     # build emulator statically
 1176 options         DEBUG_SVR4      # enable verbose debugging
 1177 device          streams         # STREAMS network driver (required for svr4).
 1178 
 1179 # Enable NDIS binary driver support
 1180 options         NDISAPI
 1181 device          ndis
 1182 
 1183 
 1184 #####################################################################
 1185 # VM OPTIONS
 1186 
 1187 # Disable the 4 MByte page PSE CPU feature.  The PSE feature allows the
 1188 # kernel to use 4 MByte pages to map the kernel instead of 4k pages.
 1189 # This saves on the amount of memory needed for page tables needed to
 1190 # map the kernel.  You should only disable this feature as a temporary
 1191 # workaround if you are having problems with it enabled.
 1192 #
 1193 #options        DISABLE_PSE
 1194 
 1195 # Disable the global pages PGE CPU feature.  The PGE feature allows pages
 1196 # to be marked with the PG_G bit.  TLB entries for these pages are not
 1197 # flushed from the cache when %cr3 is reloaded.  This can make context
 1198 # switches less expensive.  You should only disable this feature as a
 1199 # temporary workaround if you are having problems with it enabled.
 1200 #
 1201 #options        DISABLE_PG_G
 1202 
 1203 # KSTACK_PAGES is the number of memory pages to assign to the kernel
 1204 # stack of each thread.
 1205 
 1206 options         KSTACK_PAGES=3
 1207 
 1208 #####################################################################
 1209 
 1210 # More undocumented options for linting.
 1211 # Note that documenting these are not considered an affront.
 1212 
 1213 options         FB_INSTALL_CDEV         # install a CDEV entry in /dev
 1214 
 1215 # PECOFF module (Win32 Execution Format)
 1216 options         PECOFF_SUPPORT
 1217 options         PECOFF_DEBUG
 1218 
 1219 options         I4B_SMP_WORKAROUND
 1220 options         I586_PMC_GUPROF=0x70000
 1221 options         KBDIO_DEBUG=2
 1222 options         KBD_MAXRETRY=4
 1223 options         KBD_MAXWAIT=6
 1224 options         KBD_RESETDELAY=201
 1225 
 1226 options         PSM_DEBUG=1
 1227 
 1228 options         TIMER_FREQ=((14318182+6)/12)
 1229 
 1230 options         VM_KMEM_SIZE
 1231 options         VM_KMEM_SIZE_MAX
 1232 options         VM_KMEM_SIZE_SCALE
 1233 
 1234 
 1235 # asr old ioctls support, needed by raidutils
 1236 
 1237 options         ASR_COMPAT

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