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: stable/12/sys/i386/conf/NOTES 370922 2021-10-17 18:50:40Z kib $
    8 #
    9 
   10 #
   11 # We want LINT to cover profiling as well.
   12 profile         2
   13 
   14 #
   15 # Enable the kernel DTrace hooks which are required to load the DTrace
   16 # kernel modules.
   17 #
   18 options         KDTRACE_HOOKS
   19 
   20 # DTrace core
   21 # NOTE: introduces CDDL-licensed components into the kernel
   22 #device         dtrace
   23 
   24 # DTrace modules
   25 #device         dtrace_profile
   26 #device         dtrace_sdt
   27 #device         dtrace_fbt
   28 #device         dtrace_systrace
   29 #device         dtrace_prototype
   30 #device         dtnfscl
   31 #device         dtmalloc
   32 
   33 # Alternatively include all the DTrace modules
   34 #device         dtraceall
   35 
   36 
   37 #####################################################################
   38 # SMP OPTIONS:
   39 #
   40 # The apic device enables the use of the I/O APIC for interrupt delivery.
   41 # The apic device can be used in both UP and SMP kernels, but is required
   42 # for SMP kernels.  Thus, the apic device is not strictly an SMP option,
   43 # but it is a prerequisite for SMP.
   44 #
   45 # Notes:
   46 #
   47 # HTT CPUs should only be used if they are enabled in the BIOS.  For
   48 # the ACPI case, ACPI only correctly tells us about any HTT CPUs if
   49 # they are enabled.  However, most HTT systems do not list HTT CPUs
   50 # in the MP Table if they are enabled, thus we guess at the HTT CPUs
   51 # for the MP Table case.  However, we shouldn't try to guess and use
   52 # these CPUs if HTT is disabled.  Thus, HTT guessing is only enabled
   53 # for the MP Table if the user explicitly asks for it via the
   54 # MPTABLE_FORCE_HTT option.  Do NOT use this option if you have HTT
   55 # disabled in your BIOS.
   56 #
   57 # IPI_PREEMPTION instructs the kernel to preempt threads running on other
   58 # CPUS if needed.  Relies on the PREEMPTION option
   59 
   60 # Mandatory:
   61 device          apic                    # I/O apic
   62 
   63 # Optional:
   64 options         MPTABLE_FORCE_HTT       # Enable HTT CPUs with the MP Table
   65 options         IPI_PREEMPTION
   66 
   67 #
   68 # Watchdog routines.
   69 #
   70 options         MP_WATCHDOG
   71 
   72 # Debugging options.
   73 #
   74 options         COUNT_XINVLTLB_HITS     # Counters for TLB events
   75 options         COUNT_IPIS              # Per-CPU IPI interrupt counters
   76 
   77 
   78 
   79 #####################################################################
   80 # CPU OPTIONS
   81 
   82 #
   83 # You must specify at least one CPU (the one you intend to run on);
   84 # deleting the specification for CPUs you don't need to use may make
   85 # parts of the system run faster.
   86 #
   87 cpu             I486_CPU
   88 cpu             I586_CPU                # aka Pentium(tm)
   89 cpu             I686_CPU                # aka Pentium Pro(tm)
   90 
   91 #
   92 # Options for CPU features.
   93 #
   94 # CPU_ATHLON_SSE_HACK tries to enable SSE instructions when the BIOS has
   95 # forgotten to enable them.
   96 #
   97 # CPU_BLUELIGHTNING_3X enables triple-clock mode on IBM Blue Lightning
   98 # CPU if CPU supports it.  The default is double-clock mode on
   99 # BlueLightning CPU box.
  100 #
  101 # CPU_BLUELIGHTNING_FPU_OP_CACHE enables FPU operand cache on IBM
  102 # BlueLightning CPU.  It works only with Cyrix FPU, and this option
  103 # should not be used with Intel FPU.
  104 #
  105 # CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1).
  106 #
  107 # CPU_CYRIX_NO_LOCK enables weak locking for the entire address space
  108 # of Cyrix 6x86 and 6x86MX CPUs by setting the NO_LOCK bit of CCR1.
  109 # Otherwise, the NO_LOCK bit of CCR1 is cleared.  (NOTE 3)
  110 #
  111 # CPU_DIRECT_MAPPED_CACHE sets L1 cache of Cyrix 486DLC CPU in direct
  112 # mapped mode.  Default is 2-way set associative mode.
  113 #
  114 # CPU_DISABLE_5X86_LSSER disables load store serialize (i.e., enables
  115 # reorder).  This option should not be used if you use memory mapped
  116 # I/O device(s).
  117 #
  118 # CPU_ELAN enables support for AMDs ElanSC520 CPU.
  119 #    CPU_ELAN_PPS enables precision timestamp code.
  120 #    CPU_ELAN_XTAL sets the clock crystal frequency in Hz.
  121 #
  122 # CPU_ENABLE_LONGRUN enables support for Transmeta Crusoe LongRun
  123 # technology which allows to restrict power consumption of the CPU by
  124 # using group of hw.crusoe.* sysctls.
  125 #
  126 # CPU_FASTER_5X86_FPU enables faster FPU exception handler.
  127 #
  128 # CPU_GEODE is for the SC1100 Geode embedded processor.  This option
  129 # is necessary because the i8254 timecounter is toast.
  130 #
  131 # CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products
  132 # for i386 machines.
  133 #
  134 # CPU_IORT defines I/O clock delay time (NOTE 1).  Default values of
  135 # I/O clock delay time on Cyrix 5x86 and 6x86 are 0 and 7,respectively
  136 # (no clock delay).
  137 #
  138 # CPU_L2_LATENCY specifies the L2 cache latency value.  This option is used
  139 # only when CPU_PPRO2CELERON is defined and Mendocino Celeron is detected.
  140 # The default value is 5.
  141 #
  142 # CPU_LOOP_EN prevents flushing the prefetch buffer if the destination
  143 # of a jump is already present in the prefetch buffer on Cyrix 5x86(NOTE
  144 # 1).
  145 #
  146 # CPU_PPRO2CELERON enables L2 cache of Mendocino Celeron CPUs.  This option
  147 # is useful when you use Socket 8 to Socket 370 converter, because most Pentium
  148 # Pro BIOSs do not enable L2 cache of Mendocino Celeron CPUs.
  149 #
  150 # CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1).
  151 #
  152 # CPU_SOEKRIS enables support www.soekris.com hardware.
  153 #
  154 # CPU_SUSP_HLT enables suspend on HALT.  If this option is set, CPU
  155 # enters suspend mode following execution of HALT instruction.
  156 #
  157 # CPU_UPGRADE_HW_CACHE eliminates unneeded cache flush instruction(s).
  158 #
  159 # CPU_WT_ALLOC enables write allocation on Cyrix 6x86/6x86MX and AMD
  160 # K5/K6/K6-2 CPUs.
  161 #
  162 # CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache
  163 # flush at hold state.
  164 #
  165 # CYRIX_CACHE_REALLY_WORKS enables (1) CPU cache on Cyrix 486 CPUs
  166 # without cache flush at hold state, and (2) write-back CPU cache on
  167 # Cyrix 6x86 whose revision < 2.7 (NOTE 2).
  168 #
  169 # NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY
  170 # Pentiums) from locking up when a LOCK CMPXCHG8B instruction is
  171 # executed.  This option is only needed if I586_CPU is also defined,
  172 # and should be included for any non-Pentium CPU that defines it.
  173 #
  174 # NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors
  175 # which indicates that the 15-16MB range is *definitely* not being
  176 # occupied by an ISA memory hole.
  177 #
  178 # NOTE 1: The options, CPU_BTB_EN, CPU_LOOP_EN, CPU_IORT,
  179 # CPU_LOOP_EN and CPU_RSTK_EN should not be used because of CPU bugs.
  180 # These options may crash your system.
  181 #
  182 # NOTE 2: If CYRIX_CACHE_REALLY_WORKS is not set, CPU cache is enabled
  183 # in write-through mode when revision < 2.7.  If revision of Cyrix
  184 # 6x86 >= 2.7, CPU cache is always enabled in write-back mode.
  185 #
  186 # NOTE 3: This option may cause failures for software that requires
  187 # locked cycles in order to operate correctly.
  188 #
  189 options         CPU_ATHLON_SSE_HACK
  190 options         CPU_BLUELIGHTNING_3X
  191 options         CPU_BLUELIGHTNING_FPU_OP_CACHE
  192 options         CPU_BTB_EN
  193 options         CPU_DIRECT_MAPPED_CACHE
  194 options         CPU_DISABLE_5X86_LSSER
  195 options         CPU_ELAN
  196 options         CPU_ELAN_PPS
  197 options         CPU_ELAN_XTAL=32768000
  198 options         CPU_ENABLE_LONGRUN
  199 options         CPU_FASTER_5X86_FPU
  200 options         CPU_GEODE
  201 options         CPU_I486_ON_386
  202 options         CPU_IORT
  203 options         CPU_L2_LATENCY=5
  204 options         CPU_LOOP_EN
  205 options         CPU_PPRO2CELERON
  206 options         CPU_RSTK_EN
  207 options         CPU_SOEKRIS
  208 options         CPU_SUSP_HLT
  209 options         CPU_UPGRADE_HW_CACHE
  210 options         CPU_WT_ALLOC
  211 options         CYRIX_CACHE_WORKS
  212 options         CYRIX_CACHE_REALLY_WORKS
  213 #options        NO_F00F_HACK
  214 
  215 # Debug options
  216 options         NPX_DEBUG       # enable npx debugging
  217 
  218 #
  219 # PERFMON causes the driver for Pentium/Pentium Pro performance counters
  220 # to be compiled.  See perfmon(4) for more information.
  221 #
  222 options         PERFMON
  223 
  224 
  225 #####################################################################
  226 # NETWORKING OPTIONS
  227 
  228 #
  229 # DEVICE_POLLING adds support for mixed interrupt-polling handling
  230 # of network device drivers, which has significant benefits in terms
  231 # of robustness to overloads and responsivity, as well as permitting
  232 # accurate scheduling of the CPU time between kernel network processing
  233 # and other activities.  The drawback is a moderate (up to 1/HZ seconds)
  234 # potential increase in response times.
  235 # It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING
  236 # to achieve smoother behaviour.
  237 # Additionally, you can enable/disable polling at runtime with help of
  238 # the ifconfig(8) utility, and select the CPU fraction reserved to
  239 # userland with the sysctl variable kern.polling.user_frac
  240 # (default 50, range 0..100).
  241 #
  242 # Not all device drivers support this mode of operation at the time of
  243 # this writing.  See polling(4) for more details.
  244 
  245 options         DEVICE_POLLING
  246 
  247 # BPF_JITTER adds support for BPF just-in-time compiler.
  248 
  249 options         BPF_JITTER
  250 
  251 # OpenFabrics Enterprise Distribution (Infiniband).
  252 options         OFED
  253 options         OFED_DEBUG_INIT
  254 
  255 # Sockets Direct Protocol
  256 options         SDP
  257 options         SDP_DEBUG
  258 
  259 # IP over Infiniband
  260 options         IPOIB
  261 options         IPOIB_DEBUG
  262 options         IPOIB_CM
  263 
  264 
  265 #####################################################################
  266 # CLOCK OPTIONS
  267 
  268 # Provide read/write access to the memory in the clock chip.
  269 device          nvram           # Access to rtc cmos via /dev/nvram
  270 
  271 
  272 #####################################################################
  273 # MISCELLANEOUS DEVICES AND OPTIONS
  274 
  275 device          speaker         #Play IBM BASIC-style noises out your speaker
  276 hint.speaker.0.at="isa"
  277 hint.speaker.0.port="0x61"
  278 device          gzip            #Exec gzipped a.out's.  REQUIRES COMPAT_AOUT!
  279 device          apm_saver       # Requires APM
  280 
  281 
  282 #####################################################################
  283 # HARDWARE BUS CONFIGURATION
  284 
  285 #
  286 # ISA bus
  287 #
  288 device          isa
  289 
  290 #
  291 # Options for `isa':
  292 #
  293 # AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
  294 # interrupt controller.  This saves about 0.7-1.25 usec for each interrupt.
  295 # This option breaks suspend/resume on some portables.
  296 #
  297 # AUTO_EOI_2 enables the `automatic EOI' feature for the slave 8259A
  298 # interrupt controller.  This saves about 0.7-1.25 usec for each interrupt.
  299 # Automatic EOI is documented not to work for for the slave with the
  300 # original i8259A, but it works for some clones and some integrated
  301 # versions.
  302 #
  303 # MAXMEM specifies the amount of RAM on the machine; if this is not
  304 # specified, FreeBSD will first read the amount of memory from the CMOS
  305 # RAM, so the amount of memory will initially be limited to 64MB or 16MB
  306 # depending on the BIOS.  If the BIOS reports 64MB, a memory probe will
  307 # then attempt to detect the installed amount of RAM.  If this probe
  308 # fails to detect >64MB RAM you will have to use the MAXMEM option.
  309 # The amount is in kilobytes, so for a machine with 128MB of RAM, it would
  310 # be 131072 (128 * 1024).
  311 #
  312 # BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
  313 # reset the CPU for reboot.  This is needed on some systems with broken
  314 # keyboard controllers.
  315 
  316 options         AUTO_EOI_1
  317 #options        AUTO_EOI_2
  318 
  319 options         MAXMEM=(128*1024)
  320 #options        BROKEN_KEYBOARD_RESET
  321 
  322 #
  323 # AGP GART support
  324 device          agp
  325 
  326 # AGP debugging.
  327 options         AGP_DEBUG
  328 
  329 
  330 #####################################################################
  331 # HARDWARE DEVICE CONFIGURATION
  332 
  333 # To include support for VGA VESA video modes
  334 options         VESA
  335 
  336 # Turn on extra debugging checks and output for VESA support.
  337 options         VESA_DEBUG
  338 
  339 device          dpms            # DPMS suspend & resume via VESA BIOS
  340 
  341 # x86 real mode BIOS emulator, required by atkbdc/dpms/vesa
  342 options         X86BIOS
  343 
  344 #
  345 # Hints for the non-optional Numeric Processing eXtension driver.
  346 hint.npx.0.flags="0x0"
  347 hint.npx.0.irq="13"
  348 
  349 #
  350 # `flags' for npx0:
  351 #       0x01    don't use the npx registers to optimize bcopy.
  352 #       0x02    don't use the npx registers to optimize bzero.
  353 #       0x04    don't use the npx registers to optimize copyin or copyout.
  354 # The npx registers are normally used to optimize copying and zeroing when
  355 # all of the following conditions are satisfied:
  356 #       I586_CPU is an option
  357 #       the cpu is an i586 (perhaps not a Pentium)
  358 #       the probe for npx0 succeeds
  359 #       INT 16 exception handling works.
  360 # Then copying and zeroing using the npx registers is normally 30-100% faster.
  361 # The flags can be used to control cases where it doesn't work or is slower.
  362 # Setting them at boot time using hints works right (the optimizations
  363 # are not used until later in the bootstrap when npx0 is attached).
  364 # Flag 0x08 automatically disables the i586 optimized routines.
  365 #
  366 
  367 #
  368 # Optional devices:
  369 #
  370 
  371 # PS/2 mouse
  372 device          psm
  373 hint.psm.0.at="atkbdc"
  374 hint.psm.0.irq="12"
  375 
  376 # Options for psm:
  377 options         PSM_HOOKRESUME          #hook the system resume event, useful
  378                                         #for some laptops
  379 options         PSM_RESETAFTERSUSPEND   #reset the device at the resume event
  380 
  381 # The keyboard controller; it controls the keyboard and the PS/2 mouse.
  382 device          atkbdc
  383 hint.atkbdc.0.at="isa"
  384 hint.atkbdc.0.port="0x060"
  385 
  386 # The AT keyboard
  387 device          atkbd
  388 hint.atkbd.0.at="atkbdc"
  389 hint.atkbd.0.irq="1"
  390 
  391 # Options for atkbd:
  392 options         ATKBD_DFLT_KEYMAP       # specify the built-in keymap
  393 makeoptions     ATKBD_DFLT_KEYMAP=fr.dvorak
  394 
  395 # `flags' for atkbd:
  396 #       0x01    Force detection of keyboard, else we always assume a keyboard
  397 #       0x02    Don't reset keyboard, useful for some newer ThinkPads
  398 #       0x03    Force detection and avoid reset, might help with certain
  399 #               dockingstations
  400 #       0x04    Old-style (XT) keyboard support, useful for older ThinkPads
  401 
  402 # Video card driver for VGA adapters.
  403 device          vga
  404 hint.vga.0.at="isa"
  405 
  406 # Options for vga:
  407 # Try the following option if the mouse pointer is not drawn correctly
  408 # or font does not seem to be loaded properly.  May cause flicker on
  409 # some systems.
  410 options         VGA_ALT_SEQACCESS
  411 
  412 # If you can dispense with some vga driver features, you may want to
  413 # use the following options to save some memory.
  414 #options        VGA_NO_FONT_LOADING     # don't save/load font
  415 #options        VGA_NO_MODE_CHANGE      # don't change video modes
  416 
  417 # Older video cards may require this option for proper operation.
  418 options         VGA_SLOW_IOACCESS       # do byte-wide i/o's to TS and GDC regs
  419 
  420 # The following option probably won't work with the LCD displays.
  421 options         VGA_WIDTH90             # support 90 column modes
  422 
  423 # Debugging.
  424 options         VGA_DEBUG
  425 
  426 # vt(4) drivers.
  427 device          vt_vga
  428 
  429 # Linear framebuffer driver for S3 VESA 1.2 cards. Works on top of VESA.
  430 device          s3pci
  431 
  432 # 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support.  This will create
  433 # the /dev/3dfx0 device to work with glide implementations.  This should get
  434 # linked to /dev/3dfx and /dev/voodoo.  Note that this is not the same as
  435 # the tdfx DRI module from XFree86 and is completely unrelated.
  436 #
  437 # To enable Linuxulator support, one must also include COMPAT_LINUX in the
  438 # config as well.  The other option is to load both as modules.
  439 
  440 device          tdfx                    # Enable 3Dfx Voodoo support
  441 device          tdfx_linux              # Enable Linuxulator support
  442 
  443 #
  444 # ACPI support using the Intel ACPI Component Architecture reference
  445 # implementation.
  446 #
  447 # ACPI_DEBUG enables the use of the debug.acpi.level and debug.acpi.layer
  448 # kernel environment variables to select initial debugging levels for the
  449 # Intel ACPICA code.  (Note that the Intel code must also have USE_DEBUGGER
  450 # defined when it is built).
  451 
  452 device          acpi
  453 options         ACPI_DEBUG
  454 options         ACPI_DMAR
  455 
  456 # ACPI WMI Mapping driver
  457 device          acpi_wmi
  458 
  459 # ACPI Asus Extras (LCD backlight/brightness, video output, etc.)
  460 device          acpi_asus
  461 
  462 # ACPI Fujitsu Extras (Buttons)
  463 device          acpi_fujitsu
  464 
  465 # ACPI extras driver for HP laptops
  466 device          acpi_hp
  467 
  468 # ACPI extras driver for IBM laptops
  469 device          acpi_ibm
  470 
  471 # ACPI Panasonic Extras (LCD backlight/brightness, video output, etc.)
  472 device          acpi_panasonic
  473 
  474 # ACPI Sony extra (LCD brightness)
  475 device          acpi_sony
  476 
  477 # ACPI Toshiba Extras (LCD backlight/brightness, video output, etc.)
  478 device          acpi_toshiba
  479 
  480 # ACPI Video Extensions (LCD backlight/brightness, video output, etc.)
  481 device          acpi_video
  482 
  483 # ACPI Docking Station
  484 device          acpi_dock
  485 
  486 # ACPI ASOC ATK0110 ASUSTeK AI Booster (voltage, temperature and fan sensors)
  487 device          aibs
  488 
  489 # The cpufreq(4) driver provides support for non-ACPI CPU frequency control
  490 device          cpufreq
  491 
  492 # Direct Rendering modules for 3D acceleration.
  493 device          drm             # DRM core module required by DRM drivers
  494 device          mach64drm       # ATI Rage Pro, Rage Mobility P/M, Rage XL
  495 device          mgadrm          # AGP Matrox G200, G400, G450, G550
  496 device          r128drm         # ATI Rage 128
  497 device          savagedrm       # S3 Savage3D, Savage4
  498 device          sisdrm          # SiS 300/305, 540, 630
  499 device          tdfxdrm         # 3dfx Voodoo 3/4/5 and Banshee
  500 device          viadrm          # VIA
  501 options         DRM_DEBUG       # Include debug printfs (slow)
  502 
  503 #
  504 # mse: Logitech and ATI InPort bus mouse ports
  505 
  506 device          mse
  507 hint.mse.0.at="isa"
  508 hint.mse.0.port="0x23c"
  509 hint.mse.0.irq="5"
  510 
  511 #
  512 # Network interfaces:
  513 #
  514 
  515 # bxe:  Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet
  516 #       adapters.
  517 # ce:   Cronyx Tau-PCI/32 sync single/dual port G.703/E1 serial adaptor
  518 #       with 32 HDLC subchannels (requires sppp (default), or NETGRAPH if
  519 #       NETGRAPH_CRONYX is configured)
  520 # cp:   Cronyx Tau-PCI sync single/dual/four port
  521 #       V.35/RS-232/RS-530/RS-449/X.21/G.703/E1/E3/T3/STS-1
  522 #       serial adaptor (requires sppp (default), or NETGRAPH if
  523 #       NETGRAPH_CRONYX is configured)
  524 # cs:   IBM Etherjet and other Crystal Semi CS89x0-based adapters
  525 # ctau: Cronyx Tau sync dual port V.35/RS-232/RS-530/RS-449/X.21/G.703/E1
  526 #       serial adaptor (requires sppp (default), or NETGRAPH if
  527 #       NETGRAPH_CRONYX is configured)
  528 # ed:   Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503
  529 #       HP PC Lan+, various PC Card devices
  530 #       (requires miibus)
  531 # ipw:  Intel PRO/Wireless 2100 IEEE 802.11 adapter
  532 # iwi:  Intel PRO/Wireless 2200BG/2225BG/2915ABG IEEE 802.11 adapters
  533 #       Requires the iwi firmware module
  534 # iwn:  Intel Wireless WiFi Link 1000/105/135/2000/4965/5000/6000/6050 abgn
  535 #       802.11 network adapters
  536 #       Requires the iwn firmware module
  537 # mthca: Mellanox HCA InfiniBand
  538 # mlx4ib: Mellanox ConnectX HCA InfiniBand
  539 # mlx4en: Mellanox ConnectX HCA Ethernet
  540 # nfe:  nVidia nForce MCP on-board Ethernet Networking (BSD open source)
  541 # sbni: Granch SBNI12-xx ISA and PCI adapters
  542 # vmx:  VMware VMXNET3 Ethernet (BSD open source)
  543 # wpi:  Intel 3945ABG Wireless LAN controller
  544 #       Requires the wpi firmware module
  545 
  546 # Order for ISA/EISA devices is important here
  547 
  548 device          bxe             # Broadcom NetXtreme II BCM5771X/BCM578XX 10GbE
  549 device          ce
  550 device          cp
  551 device          cs              # Crystal Semiconductor CS89x0 NIC
  552 hint.cs.0.at="isa"
  553 hint.cs.0.port="0x300"
  554 device          ctau
  555 hint.ctau.0.at="isa"
  556 hint.ctau.0.port="0x240"
  557 hint.ctau.0.irq="15"
  558 hint.ctau.0.drq="7"
  559 #options        NETGRAPH_CRONYX         # Enable NETGRAPH support for Cronyx adapter(s)
  560 device          ed              # NE[12]000, SMC Ultra, 3c503, DS8390 cards
  561 options         ED_3C503
  562 options         ED_HPP
  563 options         ED_SIC
  564 hint.ed.0.at="isa"
  565 hint.ed.0.port="0x280"
  566 hint.ed.0.irq="5"
  567 hint.ed.0.maddr="0xd8000"
  568 device          igc             # Intel I225 2.5G Ethernet
  569 device          ipw             # Intel 2100 wireless NICs.
  570 device          iwi             # Intel 2200BG/2225BG/2915ABG wireless NICs.
  571 device          iwn             # Intel 4965/1000/5000/6000 wireless NICs.
  572 # Hint for the i386-only ISA front-end of le(4).
  573 hint.le.0.at="isa"
  574 hint.le.0.port="0x280"
  575 hint.le.0.irq="10"
  576 hint.le.0.drq="0"
  577 device          mthca           # Mellanox HCA InfiniBand
  578 device          mlx4            # Shared code module between IB and Ethernet
  579 device          mlx4ib          # Mellanox ConnectX HCA InfiniBand
  580 device          mlx4en          # Mellanox ConnectX HCA Ethernet
  581 device          nfe             # nVidia nForce MCP on-board Ethernet
  582 device          sbni
  583 hint.sbni.0.at="isa"
  584 hint.sbni.0.port="0x210"
  585 hint.sbni.0.irq="0xefdead"
  586 hint.sbni.0.flags="0"
  587 device          vmx             # VMware VMXNET3 Ethernet
  588 device          wpi             # Intel 3945ABG wireless NICs.
  589 
  590 # IEEE 802.11 adapter firmware modules
  591 
  592 # Intel PRO/Wireless 2100 firmware:
  593 #   ipwfw:              BSS/IBSS/monitor mode firmware
  594 #   ipwbssfw:           BSS mode firmware
  595 #   ipwibssfw:          IBSS mode firmware
  596 #   ipwmonitorfw:       Monitor mode firmware
  597 # Intel PRO/Wireless 2200BG/2225BG/2915ABG firmware:
  598 #   iwifw:              BSS/IBSS/monitor mode firmware
  599 #   iwibssfw:           BSS mode firmware
  600 #   iwiibssfw:          IBSS mode firmware
  601 #   iwimonitorfw:       Monitor mode firmware
  602 # Intel Wireless WiFi Link 4965/1000/5000/6000 series firmware:
  603 #   iwnfw:              Single module to support all devices
  604 #   iwn1000fw:          Specific module for the 1000 only
  605 #   iwn105fw:           Specific module for the 105 only
  606 #   iwn135fw:           Specific module for the 135 only
  607 #   iwn2000fw:          Specific module for the 2000 only
  608 #   iwn2030fw:          Specific module for the 2030 only
  609 #   iwn4965fw:          Specific module for the 4965 only
  610 #   iwn5000fw:          Specific module for the 5000 only
  611 #   iwn5150fw:          Specific module for the 5150 only
  612 #   iwn6000fw:          Specific module for the 6000 only
  613 #   iwn6000g2afw:       Specific module for the 6000g2a only
  614 #   iwn6000g2bfw:       Specific module for the 6000g2b only
  615 #   iwn6050fw:          Specific module for the 6050 only
  616 # wpifw:        Intel 3945ABG Wireless LAN Controller firmware
  617 
  618 device          iwifw
  619 device          iwibssfw
  620 device          iwiibssfw
  621 device          iwimonitorfw
  622 device          ipwfw
  623 device          ipwbssfw
  624 device          ipwibssfw
  625 device          ipwmonitorfw
  626 device          iwnfw
  627 device          iwn1000fw
  628 device          iwn105fw
  629 device          iwn135fw
  630 device          iwn2000fw
  631 device          iwn2030fw
  632 device          iwn4965fw
  633 device          iwn5000fw
  634 device          iwn5150fw
  635 device          iwn6000fw
  636 device          iwn6000g2afw
  637 device          iwn6000g2bfw
  638 device          iwn6050fw
  639 device          wpifw
  640 
  641 #
  642 # Non-Transparent Bridge (NTB) drivers
  643 #
  644 device          if_ntb          # Virtual NTB network interface
  645 device          ntb_transport   # NTB packet transport driver
  646 device          ntb             # NTB hardware interface
  647 device          ntb_hw_amd      # AMD NTB hardware driver
  648 device          ntb_hw_intel    # Intel NTB hardware driver
  649 device          ntb_hw_plx      # PLX NTB hardware driver
  650 
  651 #
  652 # ATA raid adapters
  653 #
  654 device          pst
  655 
  656 #
  657 # Areca 11xx and 12xx series of SATA II RAID controllers.
  658 # CAM is required.
  659 #
  660 device          arcmsr          # Areca SATA II RAID
  661 
  662 #
  663 # 3ware 9000 series PATA/SATA RAID controller driver and options.
  664 # The driver is implemented as a SIM, and so, needs the CAM infrastructure.
  665 #
  666 options         TWA_DEBUG               # 0-10; 10 prints the most messages.
  667 device          twa                     # 3ware 9000 series PATA/SATA RAID
  668 
  669 #
  670 # SCSI host adapters:
  671 #
  672 # ncv: NCR 53C500 based SCSI host adapters.
  673 # nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters.
  674 # stg: TMC 18C30, 18C50 based SCSI host adapters.
  675 
  676 device          ncv
  677 device          nsp
  678 device          stg
  679 hint.stg.0.at="isa"
  680 hint.stg.0.port="0x140"
  681 hint.stg.0.port="11"
  682 
  683 #
  684 # Adaptec FSA RAID controllers, including integrated DELL controllers,
  685 # the Dell PERC 2/QC and the HP NetRAID-4M
  686 device          aac
  687 device          aacp    # SCSI Passthrough interface (optional, CAM required)
  688 
  689 #
  690 # Adaptec by PMC RAID controllers, Series 6/7/8 and upcoming families
  691 device          aacraid         # Container interface, CAM required
  692 
  693 #
  694 # Highpoint RocketRAID 27xx.
  695 device          hpt27xx
  696 
  697 #
  698 # Highpoint RocketRAID 182x.
  699 device          hptmv
  700 
  701 #
  702 # Highpoint DC7280 and R750.
  703 device          hptnr
  704 
  705 #
  706 # Highpoint RocketRAID.  Supports RR172x, RR222x, RR2240, RR232x, RR2340,
  707 # RR2210, RR174x, RR2522, RR231x, RR230x.
  708 device          hptrr
  709 
  710 #
  711 # Highpoint RocketRaid 3xxx series SATA RAID
  712 device          hptiop
  713 
  714 #
  715 # Intel integrated Memory Controller (iMC) SMBus controller
  716 #       Sandybridge-Xeon, Ivybridge-Xeon, Haswell-Xeon, Broadwell-Xeon
  717 device          imcsmb
  718 
  719 #
  720 # IBM (now Adaptec) ServeRAID controllers
  721 device          ips
  722 
  723 #
  724 # Intel C600 (Patsburg) integrated SAS controller
  725 device          isci
  726 options         ISCI_LOGGING    # enable debugging in isci HAL
  727 
  728 #
  729 # NVM Express (NVMe) support
  730 device         nvme    # base NVMe driver
  731 device         nvd     # expose NVMe namespaces as disks, depends on nvme
  732 
  733 #
  734 # PMC-Sierra SAS/SATA controller
  735 device          pmspcv
  736 #
  737 # SafeNet crypto driver: can be moved to the MI NOTES as soon as
  738 # it's tested on a big-endian machine
  739 #
  740 device          safe            # SafeNet 1141
  741 options         SAFE_DEBUG      # enable debugging support: hw.safe.debug
  742 options         SAFE_RNDTEST    # enable rndtest support
  743 
  744 #
  745 # glxiic is an I2C driver for the AMD Geode LX CS5536 System Management Bus
  746 # controller.  Requires 'device iicbus'.
  747 #
  748 device          glxiic          # AMD Geode LX CS5536 System Management Bus
  749 
  750 #
  751 # glxsb is a driver for the Security Block in AMD Geode LX processors.
  752 # Requires 'device crypto'.
  753 #
  754 device          glxsb           # AMD Geode LX Security Block
  755 
  756 #
  757 # VirtIO support
  758 #
  759 # The virtio entry provides a generic bus for use by the device drivers.
  760 # It must be combined with an interface that communicates with the host.
  761 # Multiple such interfaces defined by the VirtIO specification. FreeBSD
  762 # only has support for PCI. Therefore, virtio_pci must be statically
  763 # compiled in or loaded as a module for the device drivers to function.
  764 #
  765 device          virtio          # Generic VirtIO bus (required)
  766 device          virtio_pci      # VirtIO PCI Interface
  767 device          vtnet           # VirtIO Ethernet device
  768 device          virtio_blk      # VirtIO Block device
  769 device          virtio_scsi     # VirtIO SCSI device
  770 device          virtio_balloon  # VirtIO Memory Balloon device
  771 device          virtio_random   # VirtIO Entropy device
  772 device          virtio_console  # VirtIO Console device
  773 
  774 # Linux KVM paravirtualization support
  775 device          kvm_clock       # KVM paravirtual clock driver
  776 
  777 device          hyperv          # HyperV drivers
  778 
  779 #####################################################################
  780 
  781 #
  782 # Miscellaneous hardware:
  783 #
  784 # apm: Laptop Advanced Power Management (experimental)
  785 # ipmi: Intelligent Platform Management Interface
  786 # smapi: System Management Application Program Interface driver
  787 # smbios: DMI/SMBIOS entry point
  788 # vpd: Vital Product Data kernel interface
  789 # pbio: Parallel (8255 PPI) basic I/O (mode 0) port (e.g. Advantech PCL-724)
  790 # asmc: Apple System Management Controller
  791 # si: Specialix International SI/XIO or SX intelligent serial card driver
  792 # tpm: Trusted Platform Module
  793 
  794 # Notes on APM
  795 #  The flags takes the following meaning for apm0:
  796 #    0x0020  Statclock is broken.
  797 
  798 # Notes on the Specialix SI/XIO driver:
  799 #  The host card is memory, not IO mapped.
  800 #  The Rev 1 host cards use a 64K chunk, on a 32K boundary.
  801 #  The Rev 2 host cards use a 32K chunk, on a 32K boundary.
  802 #  The cards can use an IRQ of 11, 12 or 15.
  803 
  804 # Notes on the Sony Programmable I/O controller
  805 #  This is a temporary driver that should someday be replaced by something
  806 #  that hooks into the ACPI layer.  The device is hooked to the PIIX4's
  807 #  General Device 10 decoder, which means you have to fiddle with PCI
  808 #  registers to map it in, even though it is otherwise treated here as
  809 #  an ISA device.  At the moment, the driver polls, although the device
  810 #  is capable of generating interrupts.  It largely undocumented.
  811 #  The port location in the hint is where you WANT the device to be
  812 #  mapped.  0x10a0 seems to be traditional.  At the moment the jogdial
  813 #  is the only thing truly supported, but apparently a fair percentage
  814 #  of the Vaio extra features are controlled by this device.
  815 
  816 device          apm
  817 hint.apm.0.flags="0x20"
  818 device          ipmi
  819 device          smapi
  820 device          smbios
  821 device          vpd
  822 device          pbio
  823 hint.pbio.0.at="isa"
  824 hint.pbio.0.port="0x360"
  825 device          asmc
  826 device          tpm
  827 device          padlock_rng     # VIA Padlock RNG
  828 device          rdrand_rng      # Intel Bull Mountain RNG
  829 device          aesni           # AES-NI OpenCrypto module
  830 
  831 #
  832 # Laptop/Notebook options:
  833 #
  834 # See also:
  835 #  apm under `Miscellaneous hardware'
  836 # above.
  837 
  838 # For older notebooks that signal a powerfail condition (external
  839 # power supply dropped, or battery state low) by issuing an NMI:
  840 
  841 options         POWERFAIL_NMI   # make it beep instead of panicing
  842 
  843 #
  844 # I2C Bus
  845 #
  846 # Philips i2c bus support is provided by the `iicbus' device.
  847 #
  848 # Supported interfaces:
  849 # pcf   Philips PCF8584 ISA-bus controller
  850 #
  851 device          pcf
  852 hint.pcf.0.at="isa"
  853 hint.pcf.0.port="0x320"
  854 hint.pcf.0.irq="5"
  855 
  856 #
  857 # Hardware watchdog timers:
  858 #
  859 # ichwd: Intel ICH watchdog timer
  860 # amdsbwd: AMD SB7xx watchdog timer
  861 # viawd: VIA south bridge watchdog timer
  862 # wbwd: Winbond watchdog timer
  863 # itwd: ITE Super I/O watchdog timer
  864 #
  865 device          ichwd
  866 device          amdsbwd
  867 device          viawd
  868 device          wbwd
  869 device          itwd
  870 
  871 #
  872 # Temperature sensors:
  873 #
  874 # coretemp: on-die sensor on Intel Core and newer CPUs
  875 # amdtemp: on-die sensor on AMD K8/K10/K11 CPUs
  876 #
  877 device          coretemp
  878 device          amdtemp
  879 
  880 #
  881 # CPU control pseudo-device. Provides access to MSRs, CPUID info and
  882 # microcode update feature.
  883 #
  884 device          cpuctl
  885 
  886 #
  887 # SuperIO driver.
  888 #
  889 device          superio
  890 
  891 #
  892 # System Management Bus (SMB)
  893 #
  894 options         ENABLE_ALART            # Control alarm on Intel intpm driver
  895 
  896 #
  897 # Set the number of PV entries per process.  Increasing this can
  898 # stop panics related to heavy use of shared memory.  However, that can
  899 # (combined with large amounts of physical memory) cause panics at
  900 # boot time due the kernel running out of VM space.
  901 #
  902 # If you're tweaking this, you might also want to increase the sysctls
  903 # "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
  904 #
  905 # The value below is the one more than the default.
  906 #
  907 options         PMAP_SHPGPERPROC=201
  908 
  909 #
  910 # Number of initial kernel page table pages used for early bootstrap.
  911 # This number should include enough pages to map the kernel, any
  912 # modules or other data loaded with the kernel by the loader, and data
  913 # structures allocated before the VM system is initialized such as the
  914 # vm_page_t array.  Each page table page maps 4MB (2MB with PAE).
  915 #
  916 options         NKPT=31
  917 
  918 
  919 #####################################################################
  920 # ABI Emulation
  921 
  922 # Enable iBCS2 runtime support for SCO and ISC binaries
  923 #options        IBCS2
  924 
  925 # Emulate spx device for client side of SVR3 local X interface
  926 options         SPX_HACK
  927 
  928 # Enable (32-bit) a.out binary support
  929 options         COMPAT_AOUT
  930 
  931 # Enable 32-bit runtime support for CloudABI binaries.
  932 options         COMPAT_CLOUDABI32
  933 
  934 # Enable Linux ABI emulation
  935 options         COMPAT_LINUX
  936 
  937 # Enable the linux-like proc filesystem support (requires COMPAT_LINUX
  938 # and PSEUDOFS)
  939 options         LINPROCFS
  940 
  941 #Enable the linux-like sys filesystem support (requires COMPAT_LINUX
  942 # and PSEUDOFS)
  943 options         LINSYSFS
  944 
  945 # Enable NDIS binary driver support
  946 options         NDISAPI
  947 device          ndis
  948 
  949 
  950 #####################################################################
  951 # VM OPTIONS
  952 
  953 # KSTACK_PAGES is the number of memory pages to assign to the kernel
  954 # stack of each thread.
  955 
  956 options         KSTACK_PAGES=5
  957 
  958 # Enable detailed accounting by the PV entry allocator.
  959 
  960 options         PV_STATS
  961 
  962 #####################################################################
  963 
  964 # More undocumented options for linting.
  965 # Note that documenting these are not considered an affront.
  966 
  967 options         FB_INSTALL_CDEV         # install a CDEV entry in /dev
  968 
  969 options         I586_PMC_GUPROF=0x70000
  970 options         KBDIO_DEBUG=2
  971 options         KBD_MAXRETRY=4
  972 options         KBD_MAXWAIT=6
  973 options         KBD_RESETDELAY=201
  974 
  975 options         PSM_DEBUG=1
  976 
  977 options         TIMER_FREQ=((14318182+6)/12)
  978 
  979 options         VM_KMEM_SIZE
  980 options         VM_KMEM_SIZE_MAX
  981 options         VM_KMEM_SIZE_SCALE
  982 
  983 

Cache object: 9e268f01a9801e6c4a78434f22fa22dd


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