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 # NOTE: introduces CDDL-licensed components into the kernel
25 #device dtrace_profile
28 #device dtrace_systrace
29 #device dtrace_prototype
33 # Alternatively include all the DTrace modules
37 #####################################################################
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.
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.
57 # IPI_PREEMPTION instructs the kernel to preempt threads running on other
58 # CPUS if needed. Relies on the PREEMPTION option
61 device apic # I/O apic
64 options MPTABLE_FORCE_HTT # Enable HTT CPUs with the MP Table
65 options IPI_PREEMPTION
74 options COUNT_XINVLTLB_HITS # Counters for TLB events
75 options COUNT_IPIS # Per-CPU IPI interrupt counters
79 #####################################################################
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.
88 cpu I586_CPU # aka Pentium(tm)
89 cpu I686_CPU # aka Pentium Pro(tm)
92 # Options for CPU features.
94 # CPU_ATHLON_SSE_HACK tries to enable SSE instructions when the BIOS has
95 # forgotten to enable them.
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.
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.
105 # CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1).
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)
111 # CPU_DIRECT_MAPPED_CACHE sets L1 cache of Cyrix 486DLC CPU in direct
112 # mapped mode. Default is 2-way set associative mode.
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
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.
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.
126 # CPU_FASTER_5X86_FPU enables faster FPU exception handler.
128 # CPU_GEODE is for the SC1100 Geode embedded processor. This option
129 # is necessary because the i8254 timecounter is toast.
131 # CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products
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
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.
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
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.
150 # CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1).
152 # CPU_SOEKRIS enables support www.soekris.com hardware.
154 # CPU_SUSP_HLT enables suspend on HALT. If this option is set, CPU
155 # enters suspend mode following execution of HALT instruction.
157 # CPU_UPGRADE_HW_CACHE eliminates unneeded cache flush instruction(s).
159 # CPU_WT_ALLOC enables write allocation on Cyrix 6x86/6x86MX and AMD
162 # CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache
163 # flush at hold state.
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).
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.
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.
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.
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.
186 # NOTE 3: This option may cause failures for software that requires
187 # locked cycles in order to operate correctly.
189 options CPU_ATHLON_SSE_HACK
190 options CPU_BLUELIGHTNING_3X
191 options CPU_BLUELIGHTNING_FPU_OP_CACHE
193 options CPU_DIRECT_MAPPED_CACHE
194 options CPU_DISABLE_5X86_LSSER
197 options CPU_ELAN_XTAL=32768000
198 options CPU_ENABLE_LONGRUN
199 options CPU_FASTER_5X86_FPU
201 options CPU_I486_ON_386
203 options CPU_L2_LATENCY=5
205 options CPU_PPRO2CELERON
209 options CPU_UPGRADE_HW_CACHE
211 options CYRIX_CACHE_WORKS
212 options CYRIX_CACHE_REALLY_WORKS
213 #options NO_F00F_HACK
216 options NPX_DEBUG # enable npx debugging
219 # PERFMON causes the driver for Pentium/Pentium Pro performance counters
220 # to be compiled. See perfmon(4) for more information.
225 #####################################################################
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).
242 # Not all device drivers support this mode of operation at the time of
243 # this writing. See polling(4) for more details.
245 options DEVICE_POLLING
247 # BPF_JITTER adds support for BPF just-in-time compiler.
251 # OpenFabrics Enterprise Distribution (Infiniband).
253 options OFED_DEBUG_INIT
255 # Sockets Direct Protocol
265 #####################################################################
268 # Provide read/write access to the memory in the clock chip.
269 device nvram # Access to rtc cmos via /dev/nvram
272 #####################################################################
273 # MISCELLANEOUS DEVICES AND OPTIONS
275 device speaker #Play IBM BASIC-style noises out your speaker
276 envvar hint.speaker.0.at="isa"
277 envvar hint.speaker.0.port="0x61"
280 #####################################################################
281 # HARDWARE BUS CONFIGURATION
291 # AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
292 # interrupt controller. This saves about 0.7-1.25 usec for each interrupt.
293 # This option breaks suspend/resume on some portables.
295 # AUTO_EOI_2 enables the `automatic EOI' feature for the slave 8259A
296 # interrupt controller. This saves about 0.7-1.25 usec for each interrupt.
297 # Automatic EOI is documented not to work for for the slave with the
298 # original i8259A, but it works for some clones and some integrated
301 # MAXMEM specifies the amount of RAM on the machine; if this is not
302 # specified, FreeBSD will first read the amount of memory from the CMOS
303 # RAM, so the amount of memory will initially be limited to 64MB or 16MB
304 # depending on the BIOS. If the BIOS reports 64MB, a memory probe will
305 # then attempt to detect the installed amount of RAM. If this probe
306 # fails to detect >64MB RAM you will have to use the MAXMEM option.
307 # The amount is in kilobytes, so for a machine with 128MB of RAM, it would
308 # be 131072 (128 * 1024).
310 # BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
311 # reset the CPU for reboot. This is needed on some systems with broken
312 # keyboard controllers.
317 options MAXMEM=(128*1024)
318 #options BROKEN_KEYBOARD_RESET
328 #####################################################################
329 # HARDWARE DEVICE CONFIGURATION
331 # To include support for VGA VESA video modes
334 # Turn on extra debugging checks and output for VESA support.
337 device dpms # DPMS suspend & resume via VESA BIOS
339 # x86 real mode BIOS emulator, required by atkbdc/dpms/vesa
343 # Hints for the non-optional Numeric Processing eXtension driver.
344 envvar hint.npx.0.flags="0x0"
345 envvar hint.npx.0.irq="13"
349 # 0x01 don't use the npx registers to optimize bcopy.
350 # 0x02 don't use the npx registers to optimize bzero.
351 # 0x04 don't use the npx registers to optimize copyin or copyout.
352 # The npx registers are normally used to optimize copying and zeroing when
353 # all of the following conditions are satisfied:
354 # I586_CPU is an option
355 # the cpu is an i586 (perhaps not a Pentium)
356 # the probe for npx0 succeeds
357 # INT 16 exception handling works.
358 # Then copying and zeroing using the npx registers is normally 30-100% faster.
359 # The flags can be used to control cases where it doesn't work or is slower.
360 # Setting them at boot time using hints works right (the optimizations
361 # are not used until later in the bootstrap when npx0 is attached).
362 # Flag 0x08 automatically disables the i586 optimized routines.
371 envvar hint.psm.0.at="atkbdc"
372 envvar hint.psm.0.irq="12"
375 options PSM_HOOKRESUME #hook the system resume event, useful
377 options PSM_RESETAFTERSUSPEND #reset the device at the resume event
379 # The keyboard controller; it controls the keyboard and the PS/2 mouse.
381 envvar hint.atkbdc.0.at="isa"
382 envvar hint.atkbdc.0.port="0x060"
386 envvar hint.atkbd.0.at="atkbdc"
387 envvar hint.atkbd.0.irq="1"
390 options ATKBD_DFLT_KEYMAP # specify the built-in keymap
391 makeoptions ATKBD_DFLT_KEYMAP=fr.dvorak
394 # 0x01 Force detection of keyboard, else we always assume a keyboard
395 # 0x02 Don't reset keyboard, useful for some newer ThinkPads
396 # 0x03 Force detection and avoid reset, might help with certain
398 # 0x04 Old-style (XT) keyboard support, useful for older ThinkPads
400 # Video card driver for VGA adapters.
402 envvar hint.vga.0.at="isa"
405 # Try the following option if the mouse pointer is not drawn correctly
406 # or font does not seem to be loaded properly. May cause flicker on
408 options VGA_ALT_SEQACCESS
410 # If you can dispense with some vga driver features, you may want to
411 # use the following options to save some memory.
412 #options VGA_NO_FONT_LOADING # don't save/load font
413 #options VGA_NO_MODE_CHANGE # don't change video modes
415 # Older video cards may require this option for proper operation.
416 options VGA_SLOW_IOACCESS # do byte-wide i/o's to TS and GDC regs
418 # The following option probably won't work with the LCD displays.
419 options VGA_WIDTH90 # support 90 column modes
427 # Linear framebuffer driver for S3 VESA 1.2 cards. Works on top of VESA.
430 # 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support. This will create
431 # the /dev/3dfx0 device to work with glide implementations. This should get
432 # linked to /dev/3dfx and /dev/voodoo. Note that this is not the same as
433 # the tdfx DRI module from XFree86 and is completely unrelated.
435 # To enable Linuxulator support, one must also include COMPAT_LINUX in the
436 # config as well. The other option is to load both as modules.
438 device tdfx # Enable 3Dfx Voodoo support
439 device tdfx_linux # Enable Linuxulator support
441 options IOMMU # Enable IOMMU support
444 # ACPI support using the Intel ACPI Component Architecture reference
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).
455 # ACPI WMI Mapping driver
458 # ACPI Asus Extras (LCD backlight/brightness, video output, etc.)
461 # ACPI Fujitsu Extras (Buttons)
464 # ACPI extras driver for HP laptops
467 # ACPI extras driver for IBM laptops
470 # ACPI Panasonic Extras (LCD backlight/brightness, video output, etc.)
471 device acpi_panasonic
473 # ACPI Sony extra (LCD brightness)
476 # ACPI Toshiba Extras (LCD backlight/brightness, video output, etc.)
479 # ACPI Video Extensions (LCD backlight/brightness, video output, etc.)
482 # ACPI Docking Station
485 # ACPI ASOC ATK0110 ASUSTeK AI Booster (voltage, temperature and fan sensors)
488 # The cpufreq(4) driver provides support for non-ACPI CPU frequency control
492 # Network interfaces:
495 # bxe: Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet
497 # ce: Cronyx Tau-PCI/32 sync single/dual port G.703/E1 serial adaptor
498 # with 32 HDLC subchannels (requires sppp (default), or NETGRAPH if
499 # NETGRAPH_CRONYX is configured)
500 # cp: Cronyx Tau-PCI sync single/dual/four port
501 # V.35/RS-232/RS-530/RS-449/X.21/G.703/E1/E3/T3/STS-1
502 # serial adaptor (requires sppp (default), or NETGRAPH if
503 # NETGRAPH_CRONYX is configured)
504 # ipw: Intel PRO/Wireless 2100 IEEE 802.11 adapter
505 # iwi: Intel PRO/Wireless 2200BG/2225BG/2915ABG IEEE 802.11 adapters
506 # Requires the iwi firmware module
507 # iwn: Intel Wireless WiFi Link 1000/105/135/2000/4965/5000/6000/6050 abgn
508 # 802.11 network adapters
509 # Requires the iwn firmware module
510 # mthca: Mellanox HCA InfiniBand
511 # mlx4ib: Mellanox ConnectX HCA InfiniBand
512 # mlx4en: Mellanox ConnectX HCA Ethernet
513 # nfe: nVidia nForce MCP on-board Ethernet Networking (BSD open source)
514 # sbni: Granch SBNI12-xx ISA and PCI adapters
515 # vmx: VMware VMXNET3 Ethernet (BSD open source)
516 # wpi: Intel 3945ABG Wireless LAN controller
517 # Requires the wpi firmware module
519 # Order for ISA/EISA devices is important here
521 device bxe # Broadcom NetXtreme II BCM5771X/BCM578XX 10GbE
524 envvar hint.cs.0.at="isa"
525 envvar hint.cs.0.port="0x300"
526 #options NETGRAPH_CRONYX # Enable NETGRAPH support for Cronyx adapter(s)
530 envvar hint.ed.0.at="isa"
531 envvar hint.ed.0.port="0x280"
532 envvar hint.ed.0.irq="5"
533 envvar hint.ed.0.maddr="0xd8000"
534 device ipw # Intel 2100 wireless NICs.
535 device iwi # Intel 2200BG/2225BG/2915ABG wireless NICs.
536 device iwn # Intel 4965/1000/5000/6000 wireless NICs.
537 # Hint for the i386-only ISA front-end of le(4).
538 envvar hint.le.0.at="isa"
539 envvar hint.le.0.port="0x280"
540 envvar hint.le.0.irq="10"
541 envvar hint.le.0.drq="0"
542 device mthca # Mellanox HCA InfiniBand
543 device mlx4 # Shared code module between IB and Ethernet
544 device mlx4ib # Mellanox ConnectX HCA InfiniBand
545 device mlx4en # Mellanox ConnectX HCA Ethernet
546 device nfe # nVidia nForce MCP on-board Ethernet
548 envvar hint.sbni.0.at="isa"
549 envvar hint.sbni.0.port="0x210"
550 envvar hint.sbni.0.irq="0xefdead"
551 envvar hint.sbni.0.flags="0"
552 device vmx # VMware VMXNET3 Ethernet
553 device wpi # Intel 3945ABG wireless NICs.
555 # IEEE 802.11 adapter firmware modules
557 # Intel PRO/Wireless 2100 firmware:
558 # ipwfw: BSS/IBSS/monitor mode firmware
559 # ipwbssfw: BSS mode firmware
560 # ipwibssfw: IBSS mode firmware
561 # ipwmonitorfw: Monitor mode firmware
562 # Intel PRO/Wireless 2200BG/2225BG/2915ABG firmware:
563 # iwifw: BSS/IBSS/monitor mode firmware
564 # iwibssfw: BSS mode firmware
565 # iwiibssfw: IBSS mode firmware
566 # iwimonitorfw: Monitor mode firmware
567 # Intel Wireless WiFi Link 4965/1000/5000/6000 series firmware:
568 # iwnfw: Single module to support all devices
569 # iwn1000fw: Specific module for the 1000 only
570 # iwn105fw: Specific module for the 105 only
571 # iwn135fw: Specific module for the 135 only
572 # iwn2000fw: Specific module for the 2000 only
573 # iwn2030fw: Specific module for the 2030 only
574 # iwn4965fw: Specific module for the 4965 only
575 # iwn5000fw: Specific module for the 5000 only
576 # iwn5150fw: Specific module for the 5150 only
577 # iwn6000fw: Specific module for the 6000 only
578 # iwn6000g2afw: Specific module for the 6000g2a only
579 # iwn6000g2bfw: Specific module for the 6000g2b only
580 # iwn6050fw: Specific module for the 6050 only
581 # wpifw: Intel 3945ABG Wireless LAN Controller firmware
607 # Non-Transparent Bridge (NTB) drivers
609 device if_ntb # Virtual NTB network interface
610 device ntb_transport # NTB packet transport driver
611 device ntb # NTB hardware interface
612 device ntb_hw_amd # AMD NTB hardware driver
613 device ntb_hw_intel # Intel NTB hardware driver
614 device ntb_hw_plx # PLX NTB hardware driver
622 # Areca 11xx and 12xx series of SATA II RAID controllers.
625 device arcmsr # Areca SATA II RAID
628 # 3ware 9000 series PATA/SATA RAID controller driver and options.
629 # The driver is implemented as a SIM, and so, needs the CAM infrastructure.
631 options TWA_DEBUG # 0-10; 10 prints the most messages.
632 device twa # 3ware 9000 series PATA/SATA RAID
635 # Adaptec FSA RAID controllers, including integrated DELL controllers,
636 # the Dell PERC 2/QC and the HP NetRAID-4M
638 device aacp # SCSI Passthrough interface (optional, CAM required)
641 # Adaptec by PMC RAID controllers, Series 6/7/8 and upcoming families
642 device aacraid # Container interface, CAM required
645 # Highpoint RocketRAID 27xx.
649 # Highpoint RocketRAID 182x.
653 # Highpoint DC7280 and R750.
657 # Highpoint RocketRAID. Supports RR172x, RR222x, RR2240, RR232x, RR2340,
658 # RR2210, RR174x, RR2522, RR231x, RR230x.
662 # Highpoint RocketRaid 3xxx series SATA RAID
666 # Intel integrated Memory Controller (iMC) SMBus controller
667 # Sandybridge-Xeon, Ivybridge-Xeon, Haswell-Xeon, Broadwell-Xeon
671 # IBM (now Adaptec) ServeRAID controllers
675 # Intel C600 (Patsburg) integrated SAS controller
677 options ISCI_LOGGING # enable debugging in isci HAL
680 # NVM Express (NVMe) support
681 device nvme # base NVMe driver
682 device nvd # expose NVMe namespaces as disks, depends on nvme
685 # PMC-Sierra SAS/SATA controller
688 # SafeNet crypto driver: can be moved to the MI NOTES as soon as
689 # it's tested on a big-endian machine
691 device safe # SafeNet 1141
692 options SAFE_DEBUG # enable debugging support: hw.safe.debug
693 options SAFE_RNDTEST # enable rndtest support
696 # glxiic is an I2C driver for the AMD Geode LX CS5536 System Management Bus
697 # controller. Requires 'device iicbus'.
699 device glxiic # AMD Geode LX CS5536 System Management Bus
702 # glxsb is a driver for the Security Block in AMD Geode LX processors.
703 # Requires 'device crypto'.
705 device glxsb # AMD Geode LX Security Block
710 # The virtio entry provides a generic bus for use by the device drivers.
711 # It must be combined with an interface that communicates with the host.
712 # Multiple such interfaces defined by the VirtIO specification. FreeBSD
713 # only has support for PCI. Therefore, virtio_pci must be statically
714 # compiled in or loaded as a module for the device drivers to function.
716 device virtio # Generic VirtIO bus (required)
717 device virtio_pci # VirtIO PCI Interface
718 device vtnet # VirtIO Ethernet device
719 device virtio_blk # VirtIO Block device
720 device virtio_scsi # VirtIO SCSI device
721 device virtio_balloon # VirtIO Memory Balloon device
722 device virtio_random # VirtIO Entropy device
723 device virtio_console # VirtIO Console device
725 device hyperv # HyperV drivers
727 #####################################################################
730 # Miscellaneous hardware:
732 # ipmi: Intelligent Platform Management Interface
733 # smapi: System Management Application Program Interface driver
734 # smbios: DMI/SMBIOS entry point
735 # vpd: Vital Product Data kernel interface
736 # pbio: Parallel (8255 PPI) basic I/O (mode 0) port (e.g. Advantech PCL-724)
737 # asmc: Apple System Management Controller
738 # si: Specialix International SI/XIO or SX intelligent serial card driver
739 # tpm: Trusted Platform Module
741 # Notes on the Specialix SI/XIO driver:
742 # The host card is memory, not IO mapped.
743 # The Rev 1 host cards use a 64K chunk, on a 32K boundary.
744 # The Rev 2 host cards use a 32K chunk, on a 32K boundary.
745 # The cards can use an IRQ of 11, 12 or 15.
747 # Notes on the Sony Programmable I/O controller
748 # This is a temporary driver that should someday be replaced by something
749 # that hooks into the ACPI layer. The device is hooked to the PIIX4's
750 # General Device 10 decoder, which means you have to fiddle with PCI
751 # registers to map it in, even though it is otherwise treated here as
752 # an ISA device. At the moment, the driver polls, although the device
753 # is capable of generating interrupts. It largely undocumented.
754 # The port location in the hint is where you WANT the device to be
755 # mapped. 0x10a0 seems to be traditional. At the moment the jogdial
756 # is the only thing truly supported, but apparently a fair percentage
757 # of the Vaio extra features are controlled by this device.
764 envvar hint.pbio.0.at="isa"
765 envvar hint.pbio.0.port="0x360"
768 device padlock_rng # VIA Padlock RNG
769 device rdrand_rng # Intel Bull Mountain RNG
770 device aesni # AES-NI OpenCrypto module
771 device ossl # OpenSSL OpenCrypto module
774 # Laptop/Notebook options:
777 # apm under `Miscellaneous hardware'
782 # For older notebooks that signal a powerfail condition (external
783 # power supply dropped, or battery state low) by issuing an NMI:
785 options POWERFAIL_NMI # make it beep instead of panicing
790 # Philips i2c bus support is provided by the `iicbus' device.
792 # Supported interfaces:
793 # pcf Philips PCF8584 ISA-bus controller
796 envvar hint.pcf.0.at="isa"
797 envvar hint.pcf.0.port="0x320"
798 envvar hint.pcf.0.irq="5"
801 # Hardware watchdog timers:
803 # ichwd: Intel ICH watchdog timer
804 # amdsbwd: AMD SB7xx watchdog timer
805 # viawd: VIA south bridge watchdog timer
806 # wbwd: Winbond watchdog timer
807 # itwd: ITE Super I/O watchdog timer
816 # Temperature sensors:
818 # coretemp: on-die sensor on Intel Core and newer CPUs
819 # amdtemp: on-die sensor on AMD K8/K10/K11 CPUs
825 # CPU control pseudo-device. Provides access to MSRs, CPUID info and
826 # microcode update feature.
836 # System Management Bus (SMB)
838 options ENABLE_ALART # Control alarm on Intel intpm driver
841 # Set the number of PV entries per process. Increasing this can
842 # stop panics related to heavy use of shared memory. However, that can
843 # (combined with large amounts of physical memory) cause panics at
844 # boot time due the kernel running out of VM space.
846 # If you're tweaking this, you might also want to increase the sysctls
847 # "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
849 # The value below is the one more than the default.
851 options PMAP_SHPGPERPROC=201
854 # Number of initial kernel page table pages used for early bootstrap.
855 # This number should include enough pages to map the kernel, any
856 # modules or other data loaded with the kernel by the loader, and data
857 # structures allocated before the VM system is initialized such as the
858 # vm_page_t array. Each page table page maps 4MB (2MB with PAE).
863 #####################################################################
866 # Enable (32-bit) a.out binary support
869 # Enable 32-bit runtime support for CloudABI binaries.
870 options COMPAT_CLOUDABI32
872 # Enable Linux ABI emulation
875 # Enable the linux-like proc filesystem support (requires COMPAT_LINUX
879 #Enable the linux-like sys filesystem support (requires COMPAT_LINUX
883 # Enable NDIS binary driver support
888 #####################################################################
891 # KSTACK_PAGES is the number of memory pages to assign to the kernel
892 # stack of each thread.
894 options KSTACK_PAGES=5
896 # Enable detailed accounting by the PV entry allocator.
900 #####################################################################
902 # More undocumented options for linting.
903 # Note that documenting these are not considered an affront.
905 options FB_INSTALL_CDEV # install a CDEV entry in /dev
907 options I586_PMC_GUPROF=0x70000
908 options KBDIO_DEBUG=2
909 options KBD_MAXRETRY=4
910 options KBD_MAXWAIT=6
911 options KBD_RESETDELAY=201
915 options TIMER_FREQ=((14318182+6)/12)
918 options VM_KMEM_SIZE_MAX
919 options VM_KMEM_SIZE_SCALE