2 # NOTES -- Lines that can be cut/pasted into kernel and hints configs.
4 # This file contains machine dependent kernel configuration notes. For
5 # machine independent notes, look in /sys/conf/NOTES.
11 # We want LINT to cover profiling as well.
15 # Enable the kernel DTrace hooks which are required to load the DTrace
21 #####################################################################
24 # The apic device enables the use of the I/O APIC for interrupt delivery.
25 # The apic device can be used in both UP and SMP kernels, but is required
26 # for SMP kernels. Thus, the apic device is not strictly an SMP option,
27 # but it is a prerequisite for SMP.
31 # HTT CPUs should only be used if they are enabled in the BIOS. For
32 # the ACPI case, ACPI only correctly tells us about any HTT CPUs if
33 # they are enabled. However, most HTT systems do not list HTT CPUs
34 # in the MP Table if they are enabled, thus we guess at the HTT CPUs
35 # for the MP Table case. However, we shouldn't try to guess and use
36 # these CPUs if HTT is disabled. Thus, HTT guessing is only enabled
37 # for the MP Table if the user explicitly asks for it via the
38 # MPTABLE_FORCE_HTT option. Do NOT use this option if you have HTT
39 # disabled in your BIOS.
41 # IPI_PREEMPTION instructs the kernel to preempt threads running on other
42 # CPUS if needed. Relies on the PREEMPTION option
45 device apic # I/O apic
48 options MPTABLE_FORCE_HTT # Enable HTT CPUs with the MP Table
49 options IPI_PREEMPTION
58 options COUNT_XINVLTLB_HITS # Counters for TLB events
59 options COUNT_IPIS # Per-CPU IPI interrupt counters
63 #####################################################################
67 # You must specify at least one CPU (the one you intend to run on);
68 # deleting the specification for CPUs you don't need to use may make
69 # parts of the system run faster.
72 cpu I586_CPU # aka Pentium(tm)
73 cpu I686_CPU # aka Pentium Pro(tm)
76 # Options for CPU features.
78 # CPU_ATHLON_SSE_HACK tries to enable SSE instructions when the BIOS has
79 # forgotten to enable them.
81 # CPU_BLUELIGHTNING_3X enables triple-clock mode on IBM Blue Lightning
82 # CPU if CPU supports it. The default is double-clock mode on
83 # BlueLightning CPU box.
85 # CPU_BLUELIGHTNING_FPU_OP_CACHE enables FPU operand cache on IBM
86 # BlueLightning CPU. It works only with Cyrix FPU, and this option
87 # should not be used with Intel FPU.
89 # CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1).
91 # CPU_CYRIX_NO_LOCK enables weak locking for the entire address space
92 # of Cyrix 6x86 and 6x86MX CPUs by setting the NO_LOCK bit of CCR1.
93 # Otherwise, the NO_LOCK bit of CCR1 is cleared. (NOTE 3)
95 # CPU_DIRECT_MAPPED_CACHE sets L1 cache of Cyrix 486DLC CPU in direct
96 # mapped mode. Default is 2-way set associative mode.
98 # CPU_DISABLE_5X86_LSSER disables load store serialize (i.e., enables
99 # reorder). This option should not be used if you use memory mapped
102 # CPU_DISABLE_CMPXCHG disables the CMPXCHG instruction on > i386 IA32
103 # machines. VmWare 3.x seems to emulate this instruction poorly, causing
104 # the guest OS to run very slowly. This problem appears to be fixed in
105 # VmWare 4.x, at least in version 4.5.2, so that enabling this option with
106 # VmWare 4.x will result in locking operations to be 20-30 times slower.
107 # Enabling this with an SMP kernel will cause the kernel to be unusable.
109 # CPU_DISABLE_SSE explicitly prevents I686_CPU from turning on SSE.
111 # CPU_ELAN enables support for AMDs ElanSC520 CPU.
112 # CPU_ELAN_PPS enables precision timestamp code.
113 # CPU_ELAN_XTAL sets the clock crystal frequency in Hz.
115 # CPU_ENABLE_LONGRUN enables support for Transmeta Crusoe LongRun
116 # technology which allows to restrict power consumption of the CPU by
117 # using group of hw.crusoe.* sysctls.
119 # CPU_FASTER_5X86_FPU enables faster FPU exception handler.
121 # CPU_GEODE is for the SC1100 Geode embedded processor. This option
122 # is necessary because the i8254 timecounter is toast.
124 # CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products
127 # CPU_IORT defines I/O clock delay time (NOTE 1). Default values of
128 # I/O clock delay time on Cyrix 5x86 and 6x86 are 0 and 7,respectively
131 # CPU_L2_LATENCY specifies the L2 cache latency value. This option is used
132 # only when CPU_PPRO2CELERON is defined and Mendocino Celeron is detected.
133 # The default value is 5.
135 # CPU_LOOP_EN prevents flushing the prefetch buffer if the destination
136 # of a jump is already present in the prefetch buffer on Cyrix 5x86(NOTE
139 # CPU_PPRO2CELERON enables L2 cache of Mendocino Celeron CPUs. This option
140 # is useful when you use Socket 8 to Socket 370 converter, because most Pentium
141 # Pro BIOSs do not enable L2 cache of Mendocino Celeron CPUs.
143 # CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1).
145 # CPU_SOEKRIS enables support www.soekris.com hardware.
147 # CPU_SUSP_HLT enables suspend on HALT. If this option is set, CPU
148 # enters suspend mode following execution of HALT instruction.
150 # CPU_UPGRADE_HW_CACHE eliminates unneeded cache flush instruction(s).
152 # CPU_WT_ALLOC enables write allocation on Cyrix 6x86/6x86MX and AMD
155 # CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache
156 # flush at hold state.
158 # CYRIX_CACHE_REALLY_WORKS enables (1) CPU cache on Cyrix 486 CPUs
159 # without cache flush at hold state, and (2) write-back CPU cache on
160 # Cyrix 6x86 whose revision < 2.7 (NOTE 2).
162 # NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY
163 # Pentiums) from locking up when a LOCK CMPXCHG8B instruction is
164 # executed. This option is only needed if I586_CPU is also defined,
165 # and should be included for any non-Pentium CPU that defines it.
167 # NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors
168 # which indicates that the 15-16MB range is *definitely* not being
169 # occupied by an ISA memory hole.
171 # NOTE 1: The options, CPU_BTB_EN, CPU_LOOP_EN, CPU_IORT,
172 # CPU_LOOP_EN and CPU_RSTK_EN should not be used because of CPU bugs.
173 # These options may crash your system.
175 # NOTE 2: If CYRIX_CACHE_REALLY_WORKS is not set, CPU cache is enabled
176 # in write-through mode when revision < 2.7. If revision of Cyrix
177 # 6x86 >= 2.7, CPU cache is always enabled in write-back mode.
179 # NOTE 3: This option may cause failures for software that requires
180 # locked cycles in order to operate correctly.
182 options CPU_ATHLON_SSE_HACK
183 options CPU_BLUELIGHTNING_3X
184 options CPU_BLUELIGHTNING_FPU_OP_CACHE
186 options CPU_DIRECT_MAPPED_CACHE
187 options CPU_DISABLE_5X86_LSSER
188 options CPU_DISABLE_CMPXCHG
189 #options CPU_DISABLE_SSE
192 options CPU_ELAN_XTAL=32768000
193 options CPU_ENABLE_LONGRUN
194 options CPU_FASTER_5X86_FPU
196 options CPU_I486_ON_386
198 options CPU_L2_LATENCY=5
200 options CPU_PPRO2CELERON
204 options CPU_UPGRADE_HW_CACHE
206 options CYRIX_CACHE_WORKS
207 options CYRIX_CACHE_REALLY_WORKS
208 #options NO_F00F_HACK
211 options NPX_DEBUG # enable npx debugging
214 # PERFMON causes the driver for Pentium/Pentium Pro performance counters
215 # to be compiled. See perfmon(4) for more information.
220 # XBOX causes the kernel to be bootable on the Microsoft XBox console system.
221 # The resulting kernel will auto-detect whether it is being booted on a XBox,
222 # so kernels compiled with this option will also work on an ordinary PC.
223 # This option require I686_CPU.
225 # xboxfb includes support for the XBox frame buffer device. It is fully USB-
226 # keyboard aware, and will only be used if an xbox is detected. This option
227 # (obviously) requires XBOX support in your kernel.
229 # NOTE: xboxfb currently conflicts with syscons(4); if you have an XBOX and
230 # include both in your kernel; you will not get any video output. Ordinary
231 # PC's do not suffer from this.
237 #####################################################################
241 # DEVICE_POLLING adds support for mixed interrupt-polling handling
242 # of network device drivers, which has significant benefits in terms
243 # of robustness to overloads and responsivity, as well as permitting
244 # accurate scheduling of the CPU time between kernel network processing
245 # and other activities. The drawback is a moderate (up to 1/HZ seconds)
246 # potential increase in response times.
247 # It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING
248 # to achieve smoother behaviour.
249 # Additionally, you can enable/disable polling at runtime with help of
250 # the ifconfig(8) utility, and select the CPU fraction reserved to
251 # userland with the sysctl variable kern.polling.user_frac
252 # (default 50, range 0..100).
254 # Not all device drivers support this mode of operation at the time of
255 # this writing. See polling(4) for more details.
257 options DEVICE_POLLING
259 # BPF_JITTER adds support for BPF just-in-time compiler.
263 # OpenFabrics Enterprise Distribution (Infiniband).
265 options OFED_DEBUG_INIT
267 # Sockets Direct Protocol
277 #####################################################################
280 # Provide read/write access to the memory in the clock chip.
281 device nvram # Access to rtc cmos via /dev/nvram
284 #####################################################################
285 # MISCELLANEOUS DEVICES AND OPTIONS
287 device speaker #Play IBM BASIC-style noises out your speaker
288 hint.speaker.0.at="isa"
289 hint.speaker.0.port="0x61"
290 device gzip #Exec gzipped a.out's. REQUIRES COMPAT_AOUT!
291 device apm_saver # Requires APM
294 #####################################################################
295 # HARDWARE BUS CONFIGURATION
300 device isa # Required by npx(4)
305 # AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
306 # interrupt controller. This saves about 0.7-1.25 usec for each interrupt.
307 # This option breaks suspend/resume on some portables.
309 # AUTO_EOI_2 enables the `automatic EOI' feature for the slave 8259A
310 # interrupt controller. This saves about 0.7-1.25 usec for each interrupt.
311 # Automatic EOI is documented not to work for for the slave with the
312 # original i8259A, but it works for some clones and some integrated
315 # MAXMEM specifies the amount of RAM on the machine; if this is not
316 # specified, FreeBSD will first read the amount of memory from the CMOS
317 # RAM, so the amount of memory will initially be limited to 64MB or 16MB
318 # depending on the BIOS. If the BIOS reports 64MB, a memory probe will
319 # then attempt to detect the installed amount of RAM. If this probe
320 # fails to detect >64MB RAM you will have to use the MAXMEM option.
321 # The amount is in kilobytes, so for a machine with 128MB of RAM, it would
322 # be 131072 (128 * 1024).
324 # BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
325 # reset the CPU for reboot. This is needed on some systems with broken
326 # keyboard controllers.
331 options MAXMEM=(128*1024)
332 #options BROKEN_KEYBOARD_RESET
337 # The EISA bus device is `eisa'. It provides auto-detection and
338 # configuration support for all devices on the EISA bus.
342 # By default, only 10 EISA slots are probed, since the slot numbers
343 # above clash with the configuration address space of the PCI subsystem,
344 # and the EISA probe is not very smart about this. This is sufficient
345 # for most machines, but in particular the HP NetServer LC series comes
346 # with an onboard AIC7770 dual-channel SCSI controller on EISA slot #11,
347 # thus you need to bump this figure to 12 for them.
348 options EISA_SLOTS=12
353 # The MCA bus device is `mca'. It provides auto-detection and
354 # configuration support for all devices on the MCA bus.
355 # No hints are required for MCA.
360 # PCI bus & PCI options:
372 #####################################################################
373 # HARDWARE DEVICE CONFIGURATION
375 # To include support for VGA VESA video modes
378 # Turn on extra debugging checks and output for VESA support.
381 device dpms # DPMS suspend & resume via VESA BIOS
383 # x86 real mode BIOS emulator, required by atkbdc/dpms/vesa
387 # The Numeric Processing eXtension driver. This is non-optional.
389 hint.npx.0.flags="0x0"
394 # 0x01 don't use the npx registers to optimize bcopy.
395 # 0x02 don't use the npx registers to optimize bzero.
396 # 0x04 don't use the npx registers to optimize copyin or copyout.
397 # The npx registers are normally used to optimize copying and zeroing when
398 # all of the following conditions are satisfied:
399 # I586_CPU is an option
400 # the cpu is an i586 (perhaps not a Pentium)
401 # the probe for npx0 succeeds
402 # INT 16 exception handling works.
403 # Then copying and zeroing using the npx registers is normally 30-100% faster.
404 # The flags can be used to control cases where it doesn't work or is slower.
405 # Setting them at boot time using hints works right (the optimizations
406 # are not used until later in the bootstrap when npx0 is attached).
407 # Flag 0x08 automatically disables the i586 optimized routines.
416 hint.psm.0.at="atkbdc"
420 options PSM_HOOKRESUME #hook the system resume event, useful
422 options PSM_RESETAFTERSUSPEND #reset the device at the resume event
424 # The keyboard controller; it controls the keyboard and the PS/2 mouse.
426 hint.atkbdc.0.at="isa"
427 hint.atkbdc.0.port="0x060"
431 hint.atkbd.0.at="atkbdc"
435 options ATKBD_DFLT_KEYMAP # specify the built-in keymap
436 makeoptions ATKBD_DFLT_KEYMAP=jp.106
439 # 0x01 Force detection of keyboard, else we always assume a keyboard
440 # 0x02 Don't reset keyboard, useful for some newer ThinkPads
441 # 0x03 Force detection and avoid reset, might help with certain
443 # 0x04 Old-style (XT) keyboard support, useful for older ThinkPads
445 # Video card driver for VGA adapters.
450 # Try the following option if the mouse pointer is not drawn correctly
451 # or font does not seem to be loaded properly. May cause flicker on
453 options VGA_ALT_SEQACCESS
455 # If you can dispense with some vga driver features, you may want to
456 # use the following options to save some memory.
457 #options VGA_NO_FONT_LOADING # don't save/load font
458 #options VGA_NO_MODE_CHANGE # don't change video modes
460 # Older video cards may require this option for proper operation.
461 options VGA_SLOW_IOACCESS # do byte-wide i/o's to TS and GDC regs
463 # The following option probably won't work with the LCD displays.
464 options VGA_WIDTH90 # support 90 column modes
469 # Linear framebuffer driver for S3 VESA 1.2 cards. Works on top of VESA.
472 # 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support. This will create
473 # the /dev/3dfx0 device to work with glide implementations. This should get
474 # linked to /dev/3dfx and /dev/voodoo. Note that this is not the same as
475 # the tdfx DRI module from XFree86 and is completely unrelated.
477 # To enable Linuxulator support, one must also include COMPAT_LINUX in the
478 # config as well. The other option is to load both as modules.
480 device tdfx # Enable 3Dfx Voodoo support
481 device tdfx_linux # Enable Linuxulator support
484 # ACPI support using the Intel ACPI Component Architecture reference
487 # ACPI_DEBUG enables the use of the debug.acpi.level and debug.acpi.layer
488 # kernel environment variables to select initial debugging levels for the
489 # Intel ACPICA code. (Note that the Intel code must also have USE_DEBUGGER
490 # defined when it is built).
495 # ACPI WMI Mapping driver
498 # ACPI Asus Extras (LCD backlight/brightness, video output, etc.)
501 # ACPI Fujitsu Extras (Buttons)
504 # ACPI extras driver for HP laptops
507 # ACPI extras driver for IBM laptops
510 # ACPI Panasonic Extras (LCD backlight/brightness, video output, etc.)
511 device acpi_panasonic
513 # ACPI Sony extra (LCD brightness)
516 # ACPI Toshiba Extras (LCD backlight/brightness, video output, etc.)
519 # ACPI Video Extensions (LCD backlight/brightness, video output, etc.)
522 # ACPI Docking Station
525 # ACPI ASOC ATK0110 ASUSTeK AI Booster (voltage, temperature and fan sensors)
528 # The cpufreq(4) driver provides support for non-ACPI CPU frequency control
531 # Direct Rendering modules for 3D acceleration.
532 device drm # DRM core module required by DRM drivers
533 device i915drm # Intel i830 through i915
534 device mach64drm # ATI Rage Pro, Rage Mobility P/M, Rage XL
535 device mgadrm # AGP Matrox G200, G400, G450, G550
536 device r128drm # ATI Rage 128
537 device radeondrm # ATI Radeon
538 device savagedrm # S3 Savage3D, Savage4
539 device sisdrm # SiS 300/305, 540, 630
540 device tdfxdrm # 3dfx Voodoo 3/4/5 and Banshee
542 options DRM_DEBUG # Include debug printfs (slow)
545 # mse: Logitech and ATI InPort bus mouse ports
549 hint.mse.0.port="0x23c"
553 # Network interfaces:
556 # bxe: Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet
558 # ce: Cronyx Tau-PCI/32 sync single/dual port G.703/E1 serial adaptor
559 # with 32 HDLC subchannels (requires sppp (default), or NETGRAPH if
560 # NETGRAPH_CRONYX is configured)
561 # cp: Cronyx Tau-PCI sync single/dual/four port
562 # V.35/RS-232/RS-530/RS-449/X.21/G.703/E1/E3/T3/STS-1
563 # serial adaptor (requires sppp (default), or NETGRAPH if
564 # NETGRAPH_CRONYX is configured)
565 # cs: IBM Etherjet and other Crystal Semi CS89x0-based adapters
566 # ctau: Cronyx Tau sync dual port V.35/RS-232/RS-530/RS-449/X.21/G.703/E1
567 # serial adaptor (requires sppp (default), or NETGRAPH if
568 # NETGRAPH_CRONYX is configured)
569 # ed: Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503
570 # HP PC Lan+, various PC Card devices
572 # ie: AT&T StarLAN 10 and EN100; 3Com 3C507; unknown NI5210;
574 # ipw: Intel PRO/Wireless 2100 IEEE 802.11 adapter
575 # iwi: Intel PRO/Wireless 2200BG/2225BG/2915ABG IEEE 802.11 adapters
576 # Requires the iwi firmware module
577 # iwn: Intel Wireless WiFi Link 4965AGN 802.11 network adapters
578 # Requires the iwn firmware module
579 # mlx4ib: Mellanox ConnectX HCA InfiniBand
580 # mlxen: Mellanox ConnectX HCA Ethernet
581 # mthca: Mellanox HCA InfiniBand
582 # nfe: nVidia nForce MCP on-board Ethernet Networking (BSD open source)
583 # nve: nVidia nForce MCP on-board Ethernet Networking
584 # sbni: Granch SBNI12-xx ISA and PCI adapters
585 # vmx: VMware VMXNET3 Ethernet (BSD open source)
586 # wl: Lucent Wavelan (ISA card only).
587 # wpi: Intel 3945ABG Wireless LAN controller
588 # Requires the wpi firmware module
590 # Order for ISA/EISA devices is important here
592 device bxe # Broadcom NetXtreme II BCM5771X/BCM578XX 10GbE
595 device cs # Crystal Semiconductor CS89x0 NIC
597 hint.cs.0.port="0x300"
600 hint.ctau.0.port="0x240"
603 #options NETGRAPH_CRONYX # Enable NETGRAPH support for Cronyx adapter(s)
604 device ed # NE[12]000, SMC Ultra, 3c503, DS8390 cards
609 hint.ed.0.port="0x280"
611 hint.ed.0.maddr="0xd8000"
612 device ie # EtherExpress 8/16, 3C507, StarLAN 10 etc.
613 # Hints only required for Starlan
615 hint.ie.2.port="0x300"
617 hint.ie.2.maddr="0xd0000"
618 device ipw # Intel 2100 wireless NICs.
619 device iwi # Intel 2200BG/2225BG/2915ABG wireless NICs.
620 device iwn # Intel 4965/1000/5000/6000 wireless NICs.
621 # Hint for the i386-only ISA front-end of le(4).
623 hint.le.0.port="0x280"
626 device mlx4ib # Mellanox ConnectX HCA InfiniBand
627 device mlxen # Mellanox ConnectX HCA Ethernet
628 device mthca # Mellanox HCA InfiniBand
629 device nfe # nVidia nForce MCP on-board Ethernet
630 device nve # nVidia nForce MCP on-board Ethernet Networking
633 hint.sbni.0.port="0x210"
634 hint.sbni.0.irq="0xefdead"
635 hint.sbni.0.flags="0"
636 device vmx # VMware VMXNET3 Ethernet
639 hint.wl.0.port="0x300"
640 options WLCACHE # enables the signal-strength cache
641 options WLDEBUG # enables verbose debugging output
642 device wpi # Intel 3945ABG wireless NICs.
644 # IEEE 802.11 adapter firmware modules
646 # Intel PRO/Wireless 2100 firmware:
647 # ipwfw: BSS/IBSS/monitor mode firmware
648 # ipwbssfw: BSS mode firmware
649 # ipwibssfw: IBSS mode firmware
650 # ipwmonitorfw: Monitor mode firmware
651 # Intel PRO/Wireless 2200BG/2225BG/2915ABG firmware:
652 # iwifw: BSS/IBSS/monitor mode firmware
653 # iwibssfw: BSS mode firmware
654 # iwiibssfw: IBSS mode firmware
655 # iwimonitorfw: Monitor mode firmware
656 # Intel Wireless WiFi Link 4965/1000/5000/6000 series firmware:
657 # iwnfw: Single module to support the 4965/1000/5000/5150/6000
658 # iwn4965fw: Specific module for the 4965 only
659 # iwn1000fw: Specific module for the 1000 only
660 # iwn5000fw: Specific module for the 5000 only
661 # iwn5150fw: Specific module for the 5150 only
662 # iwn6000fw: Specific module for the 6000 only
663 # iwn6050fw: Specific module for the 6050 only
664 # wpifw: Intel 3945ABG Wireless LAN Controller firmware
689 # Areca 11xx and 12xx series of SATA II RAID controllers.
692 device arcmsr # Areca SATA II RAID
695 # 3ware 9000 series PATA/SATA RAID controller driver and options.
696 # The driver is implemented as a SIM, and so, needs the CAM infrastructure.
698 options TWA_DEBUG # 0-10; 10 prints the most messages.
699 options TWA_FLASH_FIRMWARE # firmware image bundled when defined.
700 device twa # 3ware 9000 series PATA/SATA RAID
703 # SCSI host adapters:
705 # ncv: NCR 53C500 based SCSI host adapters.
706 # nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters.
707 # stg: TMC 18C30, 18C50 based SCSI host adapters.
713 hint.stg.0.port="0x140"
717 # Adaptec FSA RAID controllers, including integrated DELL controllers,
718 # the Dell PERC 2/QC and the HP NetRAID-4M
720 device aacp # SCSI Passthrough interface (optional, CAM required)
723 # Adaptec by PMC RAID controllers, Series 6/7/8 and upcoming families
724 device aacraid # Container interface, CAM required
726 # The 'asr' driver provides support for current DPT/Adaptec SCSI RAID
727 # controllers (SmartRAID V and VI and later).
728 # These controllers require the CAM infrastructure.
733 # Highpoint RocketRAID 27xx.
737 # Highpoint RocketRAID 182x.
741 # Highpoint DC7280 and R750.
745 # Highpoint RocketRAID. Supports RR172x, RR222x, RR2240, RR232x, RR2340,
746 # RR2210, RR174x, RR2522, RR231x, RR230x.
750 # Highpoint RocketRaid 3xxx series SATA RAID
754 # IBM (now Adaptec) ServeRAID controllers
758 # Intel C600 (Patsburg) integrated SAS controller
760 options ISCI_LOGGING # enable debugging in isci HAL
763 # NVM Express (NVMe) support
764 device nvme # base NVMe driver
765 device nvd # expose NVMe namespaces as disks, depends on nvme
768 # SafeNet crypto driver: can be moved to the MI NOTES as soon as
769 # it's tested on a big-endian machine
771 device safe # SafeNet 1141
772 options SAFE_DEBUG # enable debugging support: hw.safe.debug
773 options SAFE_RNDTEST # enable rndtest support
776 # glxiic is an I2C driver for the AMD Geode LX CS5536 System Management Bus
777 # controller. Requires 'device iicbus'.
779 device glxiic # AMD Geode LX CS5536 System Management Bus
782 # glxsb is a driver for the Security Block in AMD Geode LX processors.
783 # Requires 'device crypto'.
785 device glxsb # AMD Geode LX Security Block
790 # The virtio entry provides a generic bus for use by the device drivers.
791 # It must be combined with an interface that communicates with the host.
792 # Multiple such interfaces defined by the VirtIO specification. FreeBSD
793 # only has support for PCI. Therefore, virtio_pci must be statically
794 # compiled in or loaded as a module for the device drivers to function.
796 device virtio # Generic VirtIO bus (required)
797 device virtio_pci # VirtIO PCI Interface
798 device vtnet # VirtIO Ethernet device
799 device virtio_blk # VirtIO Block device
800 device virtio_scsi # VirtIO SCSI device
801 device virtio_balloon # VirtIO Memory Balloon device
803 device hyperv # HyperV drivers
805 #####################################################################
808 # Miscellaneous hardware:
810 # apm: Laptop Advanced Power Management (experimental)
811 # ipmi: Intelligent Platform Management Interface
812 # smapi: System Management Application Program Interface driver
813 # smbios: DMI/SMBIOS entry point
814 # vpd: Vital Product Data kernel interface
815 # pmtimer: Adjust system timer at wakeup time
816 # pbio: Parallel (8255 PPI) basic I/O (mode 0) port (e.g. Advantech PCL-724)
817 # spic: Sony Programmable I/O controller (VAIO notebooks)
818 # asmc: Apple System Management Controller
819 # si: Specialix International SI/XIO or SX intelligent serial card driver
820 # tpm: Trusted Platform Module
823 # The flags takes the following meaning for apm0:
824 # 0x0020 Statclock is broken.
826 # Notes on the Specialix SI/XIO driver:
827 # The host card is memory, not IO mapped.
828 # The Rev 1 host cards use a 64K chunk, on a 32K boundary.
829 # The Rev 2 host cards use a 32K chunk, on a 32K boundary.
830 # The cards can use an IRQ of 11, 12 or 15.
832 # Notes on the Sony Programmable I/O controller
833 # This is a temporary driver that should someday be replaced by something
834 # that hooks into the ACPI layer. The device is hooked to the PIIX4's
835 # General Device 10 decoder, which means you have to fiddle with PCI
836 # registers to map it in, even though it is otherwise treated here as
837 # an ISA device. At the moment, the driver polls, although the device
838 # is capable of generating interrupts. It largely undocumented.
839 # The port location in the hint is where you WANT the device to be
840 # mapped. 0x10a0 seems to be traditional. At the moment the jogdial
841 # is the only thing truly supported, but apparently a fair percentage
842 # of the Vaio extra features are controlled by this device.
845 hint.apm.0.flags="0x20"
853 hint.pbio.0.port="0x360"
856 hint.spic.0.port="0x10a0"
860 device padlock_rng # VIA Padlock RNG
861 device rdrand_rng # Intel Bull Mountain RNG
862 device aesni # AES-NI OpenCrypto module
865 # Laptop/Notebook options:
868 # apm under `Miscellaneous hardware'
871 # For older notebooks that signal a powerfail condition (external
872 # power supply dropped, or battery state low) by issuing an NMI:
874 options POWERFAIL_NMI # make it beep instead of panicing
879 # Philips i2c bus support is provided by the `iicbus' device.
881 # Supported interfaces:
882 # pcf Philips PCF8584 ISA-bus controller
886 hint.pcf.0.port="0x320"
890 # Hardware watchdog timers:
892 # ichwd: Intel ICH watchdog timer
893 # amdsbwd: AMD SB7xx watchdog timer
894 # viawd: VIA south bridge watchdog timer
895 # wbwd: Winbond watchdog timer
903 # Temperature sensors:
905 # coretemp: on-die sensor on Intel Core and newer CPUs
906 # amdtemp: on-die sensor on AMD K8/K10/K11 CPUs
912 # CPU control pseudo-device. Provides access to MSRs, CPUID info and
913 # microcode update feature.
918 # System Management Bus (SMB)
920 options ENABLE_ALART # Control alarm on Intel intpm driver
923 # Set the number of PV entries per process. Increasing this can
924 # stop panics related to heavy use of shared memory. However, that can
925 # (combined with large amounts of physical memory) cause panics at
926 # boot time due the kernel running out of VM space.
928 # If you're tweaking this, you might also want to increase the sysctls
929 # "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
931 # The value below is the one more than the default.
933 options PMAP_SHPGPERPROC=201
936 # Change the size of the kernel virtual address space. Due to
937 # constraints in loader(8) on i386, this must be a multiple of 4.
938 # 256 = 1 GB of kernel address space. Increasing this also causes
939 # a reduction of the address space in user processes. 512 splits
940 # the 4GB cpu address space in half (2GB user, 2GB kernel). For PAE
941 # kernels, the value will need to be double non-PAE. A value of 1024
942 # for PAE kernels is necessary to split the address space in half.
943 # This will likely need to be increased to handle memory sizes >4GB.
944 # PAE kernels default to a value of 512.
946 options KVA_PAGES=260
949 # Number of initial kernel page table pages used for early bootstrap.
950 # This number should include enough pages to map the kernel, any
951 # modules or other data loaded with the kernel by the loader, and data
952 # structures allocated before the VM system is initialized such as the
953 # vm_page_t array. Each page table page maps 4MB (2MB with PAE).
958 #####################################################################
961 # Enable iBCS2 runtime support for SCO and ISC binaries
964 # Emulate spx device for client side of SVR3 local X interface
967 # Enable Linux ABI emulation
970 # Enable i386 a.out binary support
973 # Enable the linux-like proc filesystem support (requires COMPAT_LINUX
977 #Enable the linux-like sys filesystem support (requires COMPAT_LINUX
982 # SysVR4 ABI emulation
984 # The svr4 ABI emulator can be statically compiled into the kernel or loaded as
986 # The STREAMS network emulation code can also be compiled statically or as a
987 # module. If loaded as a module, it must be loaded before the svr4 module
988 # (the /usr/sbin/svr4 script does this for you). If compiling statically,
989 # the `streams' device must be configured into any kernel which also
990 # specifies COMPAT_SVR4. It is possible to have a statically-configured
991 # STREAMS device and a dynamically loadable svr4 emulator; the /usr/sbin/svr4
992 # script understands that it doesn't need to load the `streams' module under
993 # those circumstances.
994 # Caveat: At this time, `options KTRACE' is required for the svr4 emulator
995 # (whether static or dynamic).
997 options COMPAT_SVR4 # build emulator statically
998 options DEBUG_SVR4 # enable verbose debugging
999 device streams # STREAMS network driver (required for svr4).
1001 # Enable NDIS binary driver support
1005 # Linux-specific pseudo devices support
1009 #####################################################################
1012 # Disable the 4 MByte page PSE CPU feature. The PSE feature allows the
1013 # kernel to use 4 MByte pages to map the kernel instead of 4k pages.
1014 # This saves on the amount of memory needed for page tables needed to
1015 # map the kernel. You should only disable this feature as a temporary
1016 # workaround if you are having problems with it enabled.
1018 #options DISABLE_PSE
1020 # Disable the global pages PGE CPU feature. The PGE feature allows pages
1021 # to be marked with the PG_G bit. TLB entries for these pages are not
1022 # flushed from the cache when %cr3 is reloaded. This can make context
1023 # switches less expensive. You should only disable this feature as a
1024 # temporary workaround if you are having problems with it enabled.
1026 #options DISABLE_PG_G
1028 # KSTACK_PAGES is the number of memory pages to assign to the kernel
1029 # stack of each thread.
1031 options KSTACK_PAGES=3
1033 # Enable detailed accounting by the PV entry allocator.
1037 #####################################################################
1039 # More undocumented options for linting.
1040 # Note that documenting these are not considered an affront.
1042 options FB_INSTALL_CDEV # install a CDEV entry in /dev
1044 options I586_PMC_GUPROF=0x70000
1045 options KBDIO_DEBUG=2
1046 options KBD_MAXRETRY=4
1047 options KBD_MAXWAIT=6
1048 options KBD_RESETDELAY=201
1052 options TIMER_FREQ=((14318182+6)/12)
1054 options VM_KMEM_SIZE
1055 options VM_KMEM_SIZE_MAX
1056 options VM_KMEM_SIZE_SCALE
1059 # asr old ioctls support, needed by raidutils