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 options COUNT_XINVLTLB_HITS # Counters for TLB events
42 options COUNT_IPIS # Per-CPU IPI interrupt counters
46 #####################################################################
50 # You must specify at least one CPU (the one you intend to run on);
51 # deleting the specification for CPUs you don't need to use may make
52 # parts of the system run faster.
54 cpu HAMMER # aka K8, aka Opteron & Athlon64
57 # Options for CPU features.
61 # PERFMON causes the driver for Pentium/Pentium Pro performance counters
62 # to be compiled. See perfmon(4) for more information.
67 #####################################################################
71 # DEVICE_POLLING adds support for mixed interrupt-polling handling
72 # of network device drivers, which has significant benefits in terms
73 # of robustness to overloads and responsivity, as well as permitting
74 # accurate scheduling of the CPU time between kernel network processing
75 # and other activities. The drawback is a moderate (up to 1/HZ seconds)
76 # potential increase in response times.
77 # It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING
78 # to achieve smoother behaviour.
79 # Additionally, you can enable/disable polling at runtime with help of
80 # the ifconfig(8) utility, and select the CPU fraction reserved to
81 # userland with the sysctl variable kern.polling.user_frac
82 # (default 50, range 0..100).
84 # Not all device drivers support this mode of operation at the time of
85 # this writing. See polling(4) for more details.
87 options DEVICE_POLLING
89 # BPF_JITTER adds support for BPF just-in-time compiler.
94 #####################################################################
97 # Provide read/write access to the memory in the clock chip.
98 device nvram # Access to rtc cmos via /dev/nvram
101 #####################################################################
102 # MISCELLANEOUS DEVICES AND OPTIONS
104 device speaker #Play IBM BASIC-style noises out your speaker
105 hint.speaker.0.at="isa"
106 hint.speaker.0.port="0x61"
107 device gzip #Exec gzipped a.out's. REQUIRES COMPAT_AOUT!
110 #####################################################################
111 # HARDWARE BUS CONFIGURATION
121 # AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
122 # interrupt controller. This saves about 0.7-1.25 usec for each interrupt.
123 # This option breaks suspend/resume on some portables.
125 # AUTO_EOI_2 enables the `automatic EOI' feature for the slave 8259A
126 # interrupt controller. This saves about 0.7-1.25 usec for each interrupt.
127 # Automatic EOI is documented not to work for for the slave with the
128 # original i8259A, but it works for some clones and some integrated
131 # MAXMEM specifies the amount of RAM on the machine; if this is not
132 # specified, FreeBSD will first read the amount of memory from the CMOS
133 # RAM, so the amount of memory will initially be limited to 64MB or 16MB
134 # depending on the BIOS. If the BIOS reports 64MB, a memory probe will
135 # then attempt to detect the installed amount of RAM. If this probe
136 # fails to detect >64MB RAM you will have to use the MAXMEM option.
137 # The amount is in kilobytes, so for a machine with 128MB of RAM, it would
138 # be 131072 (128 * 1024).
140 # BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
141 # reset the CPU for reboot. This is needed on some systems with broken
142 # keyboard controllers.
147 options MAXMEM=(128*1024)
148 #options BROKEN_KEYBOARD_RESET
151 # PCI bus & PCI options:
165 #####################################################################
166 # HARDWARE DEVICE CONFIGURATION
168 # To include support for VGA VESA video modes
171 # Turn on extra debugging checks and output for VESA support.
174 device dpms # DPMS suspend & resume via VESA BIOS
176 # x86 real mode BIOS emulator, required by atkbdc/dpms/vesa
185 hint.psm.0.at="atkbdc"
189 options PSM_HOOKRESUME #hook the system resume event, useful
191 options PSM_RESETAFTERSUSPEND #reset the device at the resume event
193 # The keyboard controller; it controls the keyboard and the PS/2 mouse.
195 hint.atkbdc.0.at="isa"
196 hint.atkbdc.0.port="0x060"
200 hint.atkbd.0.at="atkbdc"
204 options ATKBD_DFLT_KEYMAP # specify the built-in keymap
205 makeoptions ATKBD_DFLT_KEYMAP=jp.106
208 # 0x01 Force detection of keyboard, else we always assume a keyboard
209 # 0x02 Don't reset keyboard, useful for some newer ThinkPads
210 # 0x03 Force detection and avoid reset, might help with certain
212 # 0x04 Old-style (XT) keyboard support, useful for older ThinkPads
214 # Video card driver for VGA adapters.
219 # Try the following option if the mouse pointer is not drawn correctly
220 # or font does not seem to be loaded properly. May cause flicker on
222 options VGA_ALT_SEQACCESS
224 # If you can dispense with some vga driver features, you may want to
225 # use the following options to save some memory.
226 #options VGA_NO_FONT_LOADING # don't save/load font
227 #options VGA_NO_MODE_CHANGE # don't change video modes
229 # Older video cards may require this option for proper operation.
230 options VGA_SLOW_IOACCESS # do byte-wide i/o's to TS and GDC regs
232 # The following option probably won't work with the LCD displays.
233 options VGA_WIDTH90 # support 90 column modes
238 # Linear framebuffer driver for S3 VESA 1.2 cards. Works on top of VESA.
241 # 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support. This will create
242 # the /dev/3dfx0 device to work with glide implementations. This should get
243 # linked to /dev/3dfx and /dev/voodoo. Note that this is not the same as
244 # the tdfx DRI module from XFree86 and is completely unrelated.
246 # To enable Linuxulator support, one must also include COMPAT_LINUX in the
247 # config as well. The other option is to load both as modules.
249 device tdfx # Enable 3Dfx Voodoo support
250 #XXX#device tdfx_linux # Enable Linuxulator support
253 # ACPI support using the Intel ACPI Component Architecture reference
256 # ACPI_DEBUG enables the use of the debug.acpi.level and debug.acpi.layer
257 # kernel environment variables to select initial debugging levels for the
258 # Intel ACPICA code. (Note that the Intel code must also have USE_DEBUGGER
259 # defined when it is built).
264 # The cpufreq(4) driver provides support for non-ACPI CPU frequency control
267 # Direct Rendering modules for 3D acceleration.
268 device drm # DRM core module required by DRM drivers
269 device i915drm # Intel i830 through i915
270 device mach64drm # ATI Rage Pro, Rage Mobility P/M, Rage XL
271 device mgadrm # AGP Matrox G200, G400, G450, G550
272 device r128drm # ATI Rage 128
273 device radeondrm # ATI Radeon
274 device savagedrm # S3 Savage3D, Savage4
275 device sisdrm # SiS 300/305, 540, 630
276 device tdfxdrm # 3dfx Voodoo 3/4/5 and Banshee
278 options DRM_DEBUG # Include debug printfs (slow)
281 # Network interfaces:
284 # ed: Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503
285 # HP PC Lan+, various PC Card devices
287 # ipw: Intel PRO/Wireless 2100 IEEE 802.11 adapter
288 # Requires the ipw firmware module
289 # iwi: Intel PRO/Wireless 2200BG/2225BG/2915ABG IEEE 802.11 adapters
290 # Requires the iwi firmware module
291 # iwn: Intel Wireless WiFi Link 4965/1000/5000/6000 802.11 network adapters
292 # Requires the iwn firmware module
293 # mwl: Marvell 88W8363 IEEE 802.11 adapter
294 # Requires the mwl firmware module
295 # nfe: nVidia nForce MCP on-board Ethernet Networking (BSD open source)
296 # nve: nVidia nForce MCP on-board Ethernet Networking
297 # sfxge: Solarflare SFC9000 family 10Gb Ethernet adapters
298 # wpi: Intel 3945ABG Wireless LAN controller
299 # Requires the wpi firmware module
314 # IEEE 802.11 adapter firmware modules
316 # Intel PRO/Wireless 2100 firmware:
317 # ipwfw: BSS/IBSS/monitor mode firmware
318 # ipwbssfw: BSS mode firmware
319 # ipwibssfw: IBSS mode firmware
320 # ipwmonitorfw: Monitor mode firmware
321 # Intel PRO/Wireless 2200BG/2225BG/2915ABG firmware:
322 # iwifw: BSS/IBSS/monitor mode firmware
323 # iwibssfw: BSS mode firmware
324 # iwiibssfw: IBSS mode firmware
325 # iwimonitorfw: Monitor mode firmware
326 # Intel Wireless WiFi Link 4965/1000/5000/6000 series firmware:
327 # iwnfw: Single module to support the 4965/1000/5000/5150/6000
328 # iwn4965fw: Specific module for the 4965 only
329 # iwn1000fw: Specific module for the 1000 only
330 # iwn5000fw: Specific module for the 5000 only
331 # iwn5150fw: Specific module for the 5150 only
332 # iwn6000fw: Specific module for the 6000 only
333 # iwn6050fw: Specific module for the 6050 only
334 # mwlfw: Marvell 88W8363 firmware
335 # wpifw: Intel 3945ABG Wireless LAN Controller firmware
356 #XXX this stores pointers in a 32bit field that is defined by the hardware
360 # Areca 11xx and 12xx series of SATA II RAID controllers.
363 device arcmsr # Areca SATA II RAID
366 # 3ware 9000 series PATA/SATA RAID controller driver and options.
367 # The driver is implemented as a SIM, and so, needs the CAM infrastructure.
369 options TWA_DEBUG # 0-10; 10 prints the most messages.
370 options TWA_FLASH_FIRMWARE # firmware image bundled when defined.
371 device twa # 3ware 9000 series PATA/SATA RAID
374 # SCSI host adapters:
376 # ncv: NCR 53C500 based SCSI host adapters.
377 # nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters.
378 # stg: TMC 18C30, 18C50 based SCSI host adapters.
385 # Adaptec FSA RAID controllers, including integrated DELL controllers,
386 # the Dell PERC 2/QC and the HP NetRAID-4M
388 device aacp # SCSI Passthrough interface (optional, CAM required)
391 # Highpoint RocketRAID 27xx.
395 # Highpoint RocketRAID 182x.
399 # Highpoint RocketRAID. Supports RR172x, RR222x, RR2240, RR232x, RR2340,
400 # RR2210, RR174x, RR2522, RR231x, RR230x.
404 # Highpoint RocketRaid 3xxx series SATA RAID
408 # IBM (now Adaptec) ServeRAID controllers
412 # Intel C600 (Patsburg) integrated SAS controller
414 options ISCI_LOGGING # enable debugging in isci HAL
417 # SafeNet crypto driver: can be moved to the MI NOTES as soon as
418 # it's tested on a big-endian machine
420 device safe # SafeNet 1141
421 options SAFE_DEBUG # enable debugging support: hw.safe.debug
422 options SAFE_RNDTEST # enable rndtest support
424 #####################################################################
427 # Miscellaneous hardware:
429 # ipmi: Intelligent Platform Management Interface
430 # pbio: Parallel (8255 PPI) basic I/O (mode 0) port (e.g. Advantech PCL-724)
431 # smbios: DMI/SMBIOS entry point
432 # vpd: Vital Product Data kernel interface
433 # asmc: Apple System Management Controller
434 # si: Specialix International SI/XIO or SX intelligent serial card
435 # tpm: Trusted Platform Module
437 # Notes on the Specialix SI/XIO driver:
438 # The host card is memory, not IO mapped.
439 # The Rev 1 host cards use a 64K chunk, on a 32K boundary.
440 # The Rev 2 host cards use a 32K chunk, on a 32K boundary.
441 # The cards can use an IRQ of 11, 12 or 15.
446 hint.pbio.0.port="0x360"
454 # Laptop/Notebook options:
463 # Hardware watchdog timers:
465 # ichwd: Intel ICH watchdog timer
466 # amdsbwd: AMD SB7xx watchdog timer
467 # viawd: VIA south bridge watchdog timer
474 # Temperature sensors:
476 # coretemp: on-die sensor on Intel Core and newer CPUs
477 # amdtemp: on-die sensor on AMD K8/K10/K11 CPUs
483 # CPU control pseudo-device. Provides access to MSRs, CPUID info and
484 # microcode update feature.
489 # System Management Bus (SMB)
491 options ENABLE_ALART # Control alarm on Intel intpm driver
494 # Set the number of PV entries per process. Increasing this can
495 # stop panics related to heavy use of shared memory. However, that can
496 # (combined with large amounts of physical memory) cause panics at
497 # boot time due the kernel running out of VM space.
499 # If you're tweaking this, you might also want to increase the sysctls
500 # "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
502 # The value below is the one more than the default.
504 options PMAP_SHPGPERPROC=201
507 # Number of initial kernel page table pages used for early bootstrap.
508 # This number should include enough pages to map the kernel and any
509 # modules or other data loaded with the kernel by the loader. Each
510 # page table page maps 2MB.
515 #####################################################################
518 #XXX keep these here for now and reactivate when support for emulating
519 #XXX these 32 bit binaries is added.
521 # Enable 32-bit runtime support for FreeBSD/i386 binaries.
522 options COMPAT_FREEBSD32
524 # Enable iBCS2 runtime support for SCO and ISC binaries
527 # Emulate spx device for client side of SVR3 local X interface
528 #XXX#options SPX_HACK
530 # Enable Linux ABI emulation
531 #XXX#options COMPAT_LINUX
533 # Enable 32-bit Linux ABI emulation (requires COMPAT_43 and COMPAT_FREEBSD32)
534 options COMPAT_LINUX32
536 # Enable the linux-like proc filesystem support (requires COMPAT_LINUX32
540 #Enable the linux-like sys filesystem support (requires COMPAT_LINUX32
545 # SysVR4 ABI emulation
547 # The svr4 ABI emulator can be statically compiled into the kernel or loaded as
549 # The STREAMS network emulation code can also be compiled statically or as a
550 # module. If loaded as a module, it must be loaded before the svr4 module
551 # (the /usr/sbin/svr4 script does this for you). If compiling statically,
552 # the `streams' device must be configured into any kernel which also
553 # specifies COMPAT_SVR4. It is possible to have a statically-configured
554 # STREAMS device and a dynamically loadable svr4 emulator; the /usr/sbin/svr4
555 # script understands that it doesn't need to load the `streams' module under
556 # those circumstances.
557 # Caveat: At this time, `options KTRACE' is required for the svr4 emulator
558 # (whether static or dynamic).
560 #XXX#options COMPAT_SVR4 # build emulator statically
561 #XXX#options DEBUG_SVR4 # enable verbose debugging
562 #XXX#device streams # STREAMS network driver (required for svr4).
565 #####################################################################
568 # KSTACK_PAGES is the number of memory pages to assign to the kernel
569 # stack of each thread.
571 options KSTACK_PAGES=5
573 #####################################################################
575 # More undocumented options for linting.
576 # Note that documenting these are not considered an affront.
578 options FB_INSTALL_CDEV # install a CDEV entry in /dev
580 options KBDIO_DEBUG=2
581 options KBD_MAXRETRY=4
582 options KBD_MAXWAIT=6
583 options KBD_RESETDELAY=201
587 options TIMER_FREQ=((14318182+6)/12)
590 options VM_KMEM_SIZE_MAX
591 options VM_KMEM_SIZE_SCALE
593 # Enable NDIS binary driver support
597 # Linux-specific pseudo devices support