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 #####################################################################
26 # IPI_PREEMPTION instructs the kernel to preempt threads running on other
27 # CPUS if needed. Relies on the PREEMPTION option
30 options IPI_PREEMPTION
31 device atpic # Optional legacy pic support
32 device mptable # Optional MPSPEC mptable support
41 #####################################################################
45 # You must specify at least one CPU (the one you intend to run on);
46 # deleting the specification for CPUs you don't need to use may make
47 # parts of the system run faster.
49 cpu HAMMER # aka K8, aka Opteron & Athlon64
52 # Options for CPU features.
56 # PERFMON causes the driver for Pentium/Pentium Pro performance counters
57 # to be compiled. See perfmon(4) for more information.
62 #####################################################################
66 # DEVICE_POLLING adds support for mixed interrupt-polling handling
67 # of network device drivers, which has significant benefits in terms
68 # of robustness to overloads and responsivity, as well as permitting
69 # accurate scheduling of the CPU time between kernel network processing
70 # and other activities. The drawback is a moderate (up to 1/HZ seconds)
71 # potential increase in response times.
72 # It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING
73 # to achieve smoother behaviour.
74 # Additionally, you can enable/disable polling at runtime with help of
75 # the ifconfig(8) utility, and select the CPU fraction reserved to
76 # userland with the sysctl variable kern.polling.user_frac
77 # (default 50, range 0..100).
79 # Not all device drivers support this mode of operation at the time of
80 # this writing. See polling(4) for more details.
82 options DEVICE_POLLING
84 # BPF_JITTER adds support for BPF just-in-time compiler.
89 #####################################################################
92 # Provide read/write access to the memory in the clock chip.
93 device nvram # Access to rtc cmos via /dev/nvram
96 #####################################################################
97 # MISCELLANEOUS DEVICES AND OPTIONS
99 device speaker #Play IBM BASIC-style noises out your speaker
100 hint.speaker.0.at="isa"
101 hint.speaker.0.port="0x61"
102 device gzip #Exec gzipped a.out's. REQUIRES COMPAT_AOUT!
105 #####################################################################
106 # HARDWARE BUS CONFIGURATION
116 # AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
117 # interrupt controller. This saves about 0.7-1.25 usec for each interrupt.
118 # This option breaks suspend/resume on some portables.
120 # AUTO_EOI_2 enables the `automatic EOI' feature for the slave 8259A
121 # interrupt controller. This saves about 0.7-1.25 usec for each interrupt.
122 # Automatic EOI is documented not to work for for the slave with the
123 # original i8259A, but it works for some clones and some integrated
126 # MAXMEM specifies the amount of RAM on the machine; if this is not
127 # specified, FreeBSD will first read the amount of memory from the CMOS
128 # RAM, so the amount of memory will initially be limited to 64MB or 16MB
129 # depending on the BIOS. If the BIOS reports 64MB, a memory probe will
130 # then attempt to detect the installed amount of RAM. If this probe
131 # fails to detect >64MB RAM you will have to use the MAXMEM option.
132 # The amount is in kilobytes, so for a machine with 128MB of RAM, it would
133 # be 131072 (128 * 1024).
135 # BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
136 # reset the CPU for reboot. This is needed on some systems with broken
137 # keyboard controllers.
142 options MAXMEM=(128*1024)
143 #options BROKEN_KEYBOARD_RESET
146 # PCI bus & PCI options:
160 #####################################################################
161 # HARDWARE DEVICE CONFIGURATION
163 # To include support for VGA VESA video modes
166 # Turn on extra debugging checks and output for VESA support.
169 device dpms # DPMS suspend & resume via VESA BIOS
171 # x86 real mode BIOS emulator, required by atkbdc/dpms/vesa
180 hint.psm.0.at="atkbdc"
184 options PSM_HOOKRESUME #hook the system resume event, useful
186 options PSM_RESETAFTERSUSPEND #reset the device at the resume event
188 # The keyboard controller; it controls the keyboard and the PS/2 mouse.
190 hint.atkbdc.0.at="isa"
191 hint.atkbdc.0.port="0x060"
195 hint.atkbd.0.at="atkbdc"
199 options ATKBD_DFLT_KEYMAP # specify the built-in keymap
200 makeoptions ATKBD_DFLT_KEYMAP=jp.106
203 # 0x01 Force detection of keyboard, else we always assume a keyboard
204 # 0x02 Don't reset keyboard, useful for some newer ThinkPads
205 # 0x03 Force detection and avoid reset, might help with certain
207 # 0x04 Old-style (XT) keyboard support, useful for older ThinkPads
209 # Video card driver for VGA adapters.
214 # Try the following option if the mouse pointer is not drawn correctly
215 # or font does not seem to be loaded properly. May cause flicker on
217 options VGA_ALT_SEQACCESS
219 # If you can dispense with some vga driver features, you may want to
220 # use the following options to save some memory.
221 #options VGA_NO_FONT_LOADING # don't save/load font
222 #options VGA_NO_MODE_CHANGE # don't change video modes
224 # Older video cards may require this option for proper operation.
225 options VGA_SLOW_IOACCESS # do byte-wide i/o's to TS and GDC regs
227 # The following option probably won't work with the LCD displays.
228 options VGA_WIDTH90 # support 90 column modes
233 # Linear framebuffer driver for S3 VESA 1.2 cards. Works on top of VESA.
236 # 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support. This will create
237 # the /dev/3dfx0 device to work with glide implementations. This should get
238 # linked to /dev/3dfx and /dev/voodoo. Note that this is not the same as
239 # the tdfx DRI module from XFree86 and is completely unrelated.
241 # To enable Linuxulator support, one must also include COMPAT_LINUX in the
242 # config as well. The other option is to load both as modules.
244 device tdfx # Enable 3Dfx Voodoo support
245 #XXX#device tdfx_linux # Enable Linuxulator support
248 # ACPI support using the Intel ACPI Component Architecture reference
251 # ACPI_DEBUG enables the use of the debug.acpi.level and debug.acpi.layer
252 # kernel environment variables to select initial debugging levels for the
253 # Intel ACPICA code. (Note that the Intel code must also have USE_DEBUGGER
254 # defined when it is built).
259 # The cpufreq(4) driver provides support for non-ACPI CPU frequency control
262 # Direct Rendering modules for 3D acceleration.
263 device drm # DRM core module required by DRM drivers
264 device i915drm # Intel i830 through i915
265 device mach64drm # ATI Rage Pro, Rage Mobility P/M, Rage XL
266 device mgadrm # AGP Matrox G200, G400, G450, G550
267 device r128drm # ATI Rage 128
268 device radeondrm # ATI Radeon
269 device savagedrm # S3 Savage3D, Savage4
270 device sisdrm # SiS 300/305, 540, 630
271 device tdfxdrm # 3dfx Voodoo 3/4/5 and Banshee
272 options DRM_DEBUG # Include debug printfs (slow)
275 # Network interfaces:
278 # bxe: Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet
280 # ed: Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503
281 # HP PC Lan+, various PC Card devices
283 # ipw: Intel PRO/Wireless 2100 IEEE 802.11 adapter
284 # Requires the ipw firmware module
285 # iwi: Intel PRO/Wireless 2200BG/2225BG/2915ABG IEEE 802.11 adapters
286 # Requires the iwi firmware module
287 # iwn: Intel Wireless WiFi Link 4965/1000/5000/6000 802.11 network adapters
288 # Requires the iwn firmware module
289 # mwl: Marvell 88W8363 IEEE 802.11 adapter
290 # Requires the mwl firmware module
291 # nfe: nVidia nForce MCP on-board Ethernet Networking (BSD open source)
292 # nve: nVidia nForce MCP on-board Ethernet Networking
293 # ral: Ralink Technology IEEE 802.11 wireless adapter
294 # wpi: Intel 3945ABG Wireless LAN controller
295 # Requires the wpi firmware module
297 device bxe # Broadcom NetXtreme II BCM5771X/BCM578XX 10GbE
311 device ath # Atheros pci/cardbus NIC's
312 device ath_hal # pci/cardbus chip support
313 options AH_SUPPORT_AR5416 # enable AR5416 tx/rx descriptors
314 device ath_rate_sample # SampleRate tx rate control for ath
315 #device ath_rate_amrr # AMRR rate control for ath driver
316 #device ath_rate_onoe # Onoe rate control for ath driver
318 # IEEE 802.11 adapter firmware modules
320 # Intel PRO/Wireless 2100 firmware:
321 # ipwfw: BSS/IBSS/monitor mode firmware
322 # ipwbssfw: BSS mode firmware
323 # ipwibssfw: IBSS mode firmware
324 # ipwmonitorfw: Monitor mode firmware
325 # Intel PRO/Wireless 2200BG/2225BG/2915ABG firmware:
326 # iwifw: BSS/IBSS/monitor mode firmware
327 # iwibssfw: BSS mode firmware
328 # iwiibssfw: IBSS mode firmware
329 # iwimonitorfw: Monitor mode firmware
330 # Intel Wireless WiFi Link 4965/1000/5000/6000 series firmware:
331 # iwnfw: Single module to support the 4965/1000/5000/5150/6000
332 # iwn4965fw: Specific module for the 4965 only
333 # iwn1000fw: Specific module for the 1000 only
334 # iwn5000fw: Specific module for the 5000 only
335 # iwn5150fw: Specific module for the 5150 only
336 # iwn6000fw: Specific module for the 6000 only
337 # iwn6050fw: Specific module for the 6050 only
338 # mwlfw: Marvell 88W8363 firmware
339 # wpifw: Intel 3945ABG Wireless LAN Controller firmware
360 #XXX this stores pointers in a 32bit field that is defined by the hardware
364 # Areca 11xx and 12xx series of SATA II RAID controllers.
367 device arcmsr # Areca SATA II RAID
370 # 3ware 9000 series PATA/SATA RAID controller driver and options.
371 # The driver is implemented as a SIM, and so, needs the CAM infrastructure.
373 options TWA_DEBUG # 0-10; 10 prints the most messages.
374 options TWA_FLASH_FIRMWARE # firmware image bundled when defined.
375 device twa # 3ware 9000 series PATA/SATA RAID
378 # SCSI host adapters:
380 # ncv: NCR 53C500 based SCSI host adapters.
381 # nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters.
382 # stg: TMC 18C30, 18C50 based SCSI host adapters.
389 # Adaptec FSA RAID controllers, including integrated DELL controllers,
390 # the Dell PERC 2/QC and the HP NetRAID-4M
392 device aacp # SCSI Passthrough interface (optional, CAM required)
395 # Adaptec by PMC RAID controllers, Series 6/7/8 and upcoming families
396 device aacraid # Container interface, CAM required
399 # Highpoint RocketRAID 27xx.
403 # Highpoint RocketRAID 182x.
407 # Highpoint RocketRAID. Supports RR172x, RR222x, RR2240, RR232x, RR2340,
408 # RR2210, RR174x, RR2522, RR231x, RR230x.
412 # Highpoint RocketRaid 3xxx series SATA RAID
416 # IBM (now Adaptec) ServeRAID controllers
420 # Intel C600 (Patsburg) integrated SAS controller
422 options ISCI_LOGGING # enable debugging in isci HAL
425 # SafeNet crypto driver: can be moved to the MI NOTES as soon as
426 # it's tested on a big-endian machine
428 device safe # SafeNet 1141
429 options SAFE_DEBUG # enable debugging support: hw.safe.debug
430 options SAFE_RNDTEST # enable rndtest support
435 # The virtio entry provides a generic bus for use by the device drivers.
436 # It must be combined with an interface that communicates with the host.
437 # Multiple such interfaces defined by the VirtIO specification. FreeBSD
438 # only has support for PCI. Therefore, virtio_pci must be statically
439 # compiled in or loaded as a module for the device drivers to function.
441 device virtio # Generic VirtIO bus (required)
442 device virtio_pci # VirtIO PCI Interface
443 device vtnet # VirtIO Ethernet device
444 device virtio_blk # VirtIO Block device
445 device virtio_scsi # VirtIO SCSI device
446 device virtio_balloon # VirtIO Memory Balloon device
448 #####################################################################
451 # Miscellaneous hardware:
453 # ipmi: Intelligent Platform Management Interface
454 # pbio: Parallel (8255 PPI) basic I/O (mode 0) port (e.g. Advantech PCL-724)
455 # smbios: DMI/SMBIOS entry point
456 # vpd: Vital Product Data kernel interface
457 # asmc: Apple System Management Controller
458 # si: Specialix International SI/XIO or SX intelligent serial card
459 # tpm: Trusted Platform Module
461 # Notes on the Specialix SI/XIO driver:
462 # The host card is memory, not IO mapped.
463 # The Rev 1 host cards use a 64K chunk, on a 32K boundary.
464 # The Rev 2 host cards use a 32K chunk, on a 32K boundary.
465 # The cards can use an IRQ of 11, 12 or 15.
470 hint.pbio.0.port="0x360"
478 # Laptop/Notebook options:
487 # Hardware watchdog timers:
489 # ichwd: Intel ICH watchdog timer
490 # amdsbwd: AMD SB7xx watchdog timer
491 # wbwd: Winbond watchdog timer
499 # Temperature sensors:
501 # coretemp: on-die sensor on Intel Core and newer CPUs
502 # amdtemp: on-die sensor on AMD K8/K10/K11 CPUs
508 # CPU control pseudo-device. Provides access to MSRs, CPUID info and
509 # microcode update feature.
514 # System Management Bus (SMB)
516 options ENABLE_ALART # Control alarm on Intel intpm driver
519 # Number of initial kernel page table pages used for early bootstrap.
520 # This number should include enough pages to map the kernel and any
521 # modules or other data loaded with the kernel by the loader. Each
522 # page table page maps 2MB.
527 #####################################################################
530 #XXX keep these here for now and reactivate when support for emulating
531 #XXX these 32 bit binaries is added.
533 # Enable 32-bit runtime support for FreeBSD/i386 binaries.
534 options COMPAT_FREEBSD32
536 # Enable iBCS2 runtime support for SCO and ISC binaries
539 # Emulate spx device for client side of SVR3 local X interface
540 #XXX#options SPX_HACK
542 # Enable Linux ABI emulation
543 #XXX#options COMPAT_LINUX
545 # Enable 32-bit Linux ABI emulation (requires COMPAT_43 and COMPAT_FREEBSD32)
546 options COMPAT_LINUX32
548 # Enable the linux-like proc filesystem support (requires COMPAT_LINUX32
552 #Enable the linux-like sys filesystem support (requires COMPAT_LINUX32
557 # SysVR4 ABI emulation
559 # The svr4 ABI emulator can be statically compiled into the kernel or loaded as
561 # The STREAMS network emulation code can also be compiled statically or as a
562 # module. If loaded as a module, it must be loaded before the svr4 module
563 # (the /usr/sbin/svr4 script does this for you). If compiling statically,
564 # the `streams' device must be configured into any kernel which also
565 # specifies COMPAT_SVR4. It is possible to have a statically-configured
566 # STREAMS device and a dynamically loadable svr4 emulator; the /usr/sbin/svr4
567 # script understands that it doesn't need to load the `streams' module under
568 # those circumstances.
569 # Caveat: At this time, `options KTRACE' is required for the svr4 emulator
570 # (whether static or dynamic).
572 #XXX#options COMPAT_SVR4 # build emulator statically
573 #XXX#options DEBUG_SVR4 # enable verbose debugging
574 #XXX#device streams # STREAMS network driver (required for svr4).
577 #####################################################################
580 # KSTACK_PAGES is the number of memory pages to assign to the kernel
581 # stack of each thread.
583 options KSTACK_PAGES=5
585 # Enable detailed accounting by the PV entry allocator.
589 #####################################################################
591 # More undocumented options for linting.
592 # Note that documenting these are not considered an affront.
594 options FB_INSTALL_CDEV # install a CDEV entry in /dev
596 options KBDIO_DEBUG=2
597 options KBD_MAXRETRY=4
598 options KBD_MAXWAIT=6
599 options KBD_RESETDELAY=201
603 options TIMER_FREQ=((14318182+6)/12)
606 options VM_KMEM_SIZE_MAX
607 options VM_KMEM_SIZE_SCALE
609 # Enable NDIS binary driver support
613 # Linux-specific pseudo devices support