8#
9
10#
11# We want LINT to cover profiling as well.
12profile 2
13
14
15#####################################################################
16# SMP OPTIONS:
17#
18# The apic device enables the use of the I/O APIC for interrupt delivery.
19# The apic device can be used in both UP and SMP kernels, but is required
20# for SMP kernels. Thus, the apic device is not strictly an SMP option,
21# but it is a prerequisite for SMP.
22#
23
24# Mandatory:
25device apic # I/O apic
26
27#
28# Watchdog routines.
29#
30options MP_WATCHDOG
31
32
33
34#####################################################################
35# CPU OPTIONS
36
37#
38# You must specify at least one CPU (the one you intend to run on);
39# deleting the specification for CPUs you don't need to use may make
40# parts of the system run faster.
41#
42cpu I486_CPU
43cpu I586_CPU # aka Pentium(tm)
44cpu I686_CPU # aka Pentium Pro(tm)
45
46#
47# Options for CPU features.
48#
49# CPU_BLUELIGHTNING_3X enables triple-clock mode on IBM Blue Lightning
50# CPU if CPU supports it. The default is double-clock mode on
51# BlueLightning CPU box.
52#
53# CPU_BLUELIGHTNING_FPU_OP_CACHE enables FPU operand cache on IBM
54# BlueLightning CPU. It works only with Cyrix FPU, and this option
55# should not be used with Intel FPU.
56#
57# CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1).
58#
59# CPU_CYRIX_NO_LOCK enables weak locking for the entire address space
60# of Cyrix 6x86 and 6x86MX CPUs by setting the NO_LOCK bit of CCR1.
61# Otherwise, the NO_LOCK bit of CCR1 is cleared. (NOTE 3)
62#
63# CPU_DIRECT_MAPPED_CACHE sets L1 cache of Cyrix 486DLC CPU in direct
64# mapped mode. Default is 2-way set associative mode.
65#
66# CPU_DISABLE_5X86_LSSER disables load store serialize (i.e., enables
67# reorder). This option should not be used if you use memory mapped
68# I/O device(s).
69#
70# CPU_DISABLE_CMPXCHG disables the CMPXCHG instruction on > i386 IA32
71# machines. VmWare 3.x seems to emulate this instruction poorly, causing
72# the guest OS to run very slowly. This problem appears to be fixed in
73# VmWare 4.x, at least in version 4.5.2, so that enabling this option with
74# VmWare 4.x will result in locking operations to be 20-30 times slower.
75# Enabling this with an SMP kernel will cause the kernel to be unusable.
76#
77# CPU_DISABLE_SSE explicitly prevents I686_CPU from turning on SSE.
78#
79# CPU_FASTER_5X86_FPU enables faster FPU exception handler.
80#
81# CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products
82# for i386 machines.
83#
84# CPU_IORT defines I/O clock delay time (NOTE 1). Default values of
85# I/O clock delay time on Cyrix 5x86 and 6x86 are 0 and 7,respectively
86# (no clock delay).
87#
88# CPU_L2_LATENCY specifies the L2 cache latency value. This option is used
89# only when CPU_PPRO2CELERON is defined and Mendocino Celeron is detected.
90# The default value is 5.
91#
92# CPU_LOOP_EN prevents flushing the prefetch buffer if the destination
93# of a jump is already present in the prefetch buffer on Cyrix 5x86(NOTE
94# 1).
95#
96# CPU_PPRO2CELERON enables L2 cache of Mendocino Celeron CPUs. This option
97# is useful when you use Socket 8 to Socket 370 converter, because most Pentium
98# Pro BIOSs do not enable L2 cache of Mendocino Celeron CPUs.
99#
100# CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1).
101#
102# CPU_SUSP_HLT enables suspend on HALT. If this option is set, CPU
103# enters suspend mode following execution of HALT instruction.
104#
105# CPU_UPGRADE_HW_CACHE eliminates unneeded cache flush instruction(s).
106#
107# CPU_WT_ALLOC enables write allocation on Cyrix 6x86/6x86MX and AMD
108# K5/K6/K6-2 CPUs.
109#
110# CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache
111# flush at hold state.
112#
113# CYRIX_CACHE_REALLY_WORKS enables (1) CPU cache on Cyrix 486 CPUs
114# without cache flush at hold state, and (2) write-back CPU cache on
115# Cyrix 6x86 whose revision < 2.7 (NOTE 2).
116#
117# NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY
118# Pentiums) from locking up when a LOCK CMPXCHG8B instruction is
119# executed. This option is only needed if I586_CPU is also defined,
120# and should be included for any non-Pentium CPU that defines it.
121#
122# NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors
123# which indicates that the 15-16MB range is *definitely* not being
124# occupied by an ISA memory hole.
125#
126# NOTE 1: The options, CPU_BTB_EN, CPU_LOOP_EN, CPU_IORT,
127# CPU_LOOP_EN and CPU_RSTK_EN should not be used because of CPU bugs.
128# These options may crash your system.
129#
130# NOTE 2: If CYRIX_CACHE_REALLY_WORKS is not set, CPU cache is enabled
131# in write-through mode when revision < 2.7. If revision of Cyrix
132# 6x86 >= 2.7, CPU cache is always enabled in write-back mode.
133#
134# NOTE 3: This option may cause failures for software that requires
135# locked cycles in order to operate correctly.
136#
137options CPU_BLUELIGHTNING_3X
138options CPU_BLUELIGHTNING_FPU_OP_CACHE
139options CPU_BTB_EN
140options CPU_DIRECT_MAPPED_CACHE
141options CPU_DISABLE_5X86_LSSER
142options CPU_DISABLE_CMPXCHG
143#options CPU_DISABLE_SSE
144options CPU_FASTER_5X86_FPU
145options CPU_I486_ON_386
146options CPU_IORT
147options CPU_L2_LATENCY=5
148options CPU_LOOP_EN
149options CPU_PPRO2CELERON
150options CPU_RSTK_EN
151options CPU_SUSP_HLT
152options CPU_UPGRADE_HW_CACHE
153options CPU_WT_ALLOC
154options CYRIX_CACHE_WORKS
155options CYRIX_CACHE_REALLY_WORKS
156#options NO_F00F_HACK
157
158# Debug options
159options NPX_DEBUG # enable npx debugging
160
161#
162# PERFMON causes the driver for Pentium/Pentium Pro performance counters
163# to be compiled. See perfmon(4) for more information.
164#
165options PERFMON
166
167
168#####################################################################
169# NETWORKING OPTIONS
170
171#
172# DEVICE_POLLING adds support for mixed interrupt-polling handling
173# of network device drivers, which has significant benefits in terms
174# of robustness to overloads and responsivity, as well as permitting
175# accurate scheduling of the CPU time between kernel network processing
176# and other activities. The drawback is a moderate (up to 1/HZ seconds)
177# potential increase in response times.
178# It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING
179# to achieve smoother behaviour.
180# Additionally, you can enable/disable polling at runtime with help of
181# the ifconfig(8) utility, and select the CPU fraction reserved to
182# userland with the sysctl variable kern.polling.user_frac
183# (default 50, range 0..100).
184#
185# Not all device drivers support this mode of operation at the time of
186# this writing. See polling(4) for more details.
187
188options DEVICE_POLLING
189
190# BPF_JITTER adds support for BPF just-in-time compiler.
191
192options BPF_JITTER
193
194
195#####################################################################
196# MISCELLANEOUS DEVICES AND OPTIONS
197
198#
199# sio: serial ports (see sio(4)), including support for various
200# PC Card devices, such as Modem and NICs
201#
202#device sio
203hint.sio.0.at="isa"
204hint.sio.0.port="0x3F8"
205hint.sio.0.flags="0x10"
206hint.sio.0.irq="4"
207
208# `flags' specific to sio(4).
209# 0x10 enable console support for this unit. Other console flags
210# (if applicable) are ignored unless this is set. Enabling
211# console support does not make the unit the preferred console.
212# Boot with -h or set boot_serial=YES in the loader. For sio(4)
213# specifically, the 0x20 flag can also be set (see above).
214# Currently, at most one unit can have console support; the
215# first one (in config file order) with this flag set is
216# preferred. Setting this flag for sio0 gives the old behaviour.
217# 0x20 force this unit to be the console (unless there is another
218# higher priority console). This replaces the COMCONSOLE option.
219# 0x40 reserve this unit for low level console operations. Do not
220# access the device in any normal way.
221# 0x80 use this port for serial line gdb support in ddb. Also known
222# as debug port.
223# PnP `flags'
224# 0x1 disable probing of this device. Used to prevent your modem
225# from being attached as a PnP modem.
226# Other flags for sio that aren't documented in the man page.
227# 0x20000 enable hardware RTS/CTS and larger FIFOs. Only works for
228# ST16650A-compatible UARTs.
229
230# Options for sio:
231options COM_ESP # Code for Hayes ESP.
232options COM_MULTIPORT # Code for some cards with shared IRQs.
233options CONSPEED=115200 # Speed for serial console
234 # (default 9600).
235
236device speaker #Play IBM BASIC-style noises out your speaker
237hint.speaker.0.at="isa"
238hint.speaker.0.port="0x35"
239device gzip #Exec gzipped a.out's. REQUIRES COMPAT_AOUT!
240device apm_saver # Requires APM
241
242
243#####################################################################
244# HARDWARE BUS CONFIGURATION
245
246#
247# ISA bus
248#
249device isa
250
251#
252# Options for `isa':
253#
254# AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
255# interrupt controller. This saves about 0.7-1.25 usec for each interrupt.
256# This option breaks suspend/resume on some portables.
257#
258# MAXMEM specifies the amount of RAM on the machine; if this is not
259# specified, FreeBSD will first read the amount of memory from the CMOS
260# RAM, so the amount of memory will initially be limited to 64MB or 16MB
261# depending on the BIOS. If the BIOS reports 64MB, a memory probe will
262# then attempt to detect the installed amount of RAM. If this probe
263# fails to detect >64MB RAM you will have to use the MAXMEM option.
264# The amount is in kilobytes, so for a machine with 128MB of RAM, it would
265# be 131072 (128 * 1024).
266#
267# BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
268# reset the CPU for reboot. This is needed on some systems with broken
269# keyboard controllers.
270#
271# EPSON_BOUNCEDMA was to use a bounce buffer to upper 15MB, but it's
272# broken now.
273#
274# EPSON_MEMWIN disables 15-16MB chunk, and enables EPSON memory window.
275#
276
277options AUTO_EOI_1
278
279options MAXMEM=(128*1024)
280#options BROKEN_KEYBOARD_RESET
281options EPSON_BOUNCEDMA
282options EPSON_MEMWIN
283
284#
285# PCI bus & PCI options:
286#
287device pci
288
289#
290# AGP GART support
291device agp
292
293# AGP debugging.
294options AGP_DEBUG
295
296
297#####################################################################
298# HARDWARE DEVICE CONFIGURATION
299
300# PC98 keyboard
301device pckbd
302hint.pckbd.0.at="isa"
303hint.pckbd.0.port="0x041"
304hint.pckbd.0.irq="1"
305
306# GDC screen
307device gdc
308hint.gdc.0.at="isa"
309options LINE30
310
311#
312# The Numeric Processing eXtension driver. This is non-optional.
313device npx
314
315#
316# `flags' for npx0:
317# 0x01 don't use the npx registers to optimize bcopy.
318# 0x02 don't use the npx registers to optimize bzero.
319# 0x04 don't use the npx registers to optimize copyin or copyout.
320# The npx registers are normally used to optimize copying and zeroing when
321# all of the following conditions are satisfied:
322# I586_CPU is an option
323# the cpu is an i586 (perhaps not a Pentium)
324# the probe for npx0 succeeds
325# INT 16 exception handling works.
326# Then copying and zeroing using the npx registers is normally 30-100% faster.
327# The flags can be used to control cases where it doesn't work or is slower.
328# Setting them at boot time using hints works right (the optimizations
329# are not used until later in the bootstrap when npx0 is attached).
330# Flag 0x08 automatically disables the i586 optimized routines.
331#
332
333#
334# Optional devices:
335#
336
337# 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support. This will create
338# the /dev/3dfx0 device to work with glide implementations. This should get
339# linked to /dev/3dfx and /dev/voodoo. Note that this is not the same as
340# the tdfx DRI module from XFree86 and is completely unrelated.
341#
342# To enable Linuxulator support, one must also include COMPAT_LINUX in the
343# config as well. The other option is to load both as modules.
344
345device tdfx # Enable 3Dfx Voodoo support
346device tdfx_linux # Enable Linuxulator support
347
348# Direct Rendering modules for 3D acceleration.
349device drm # DRM core module required by DRM drivers
350device mach64drm # ATI Rage Pro, Rage Mobility P/M, Rage XL
351device mgadrm # AGP Matrox G200, G400, G450, G550
352device r128drm # ATI Rage 128
353device radeondrm # ATI Radeon
354device savagedrm # S3 Savage3D, Savage4
355device sisdrm # SiS 300/305, 540, 630
356device tdfxdrm # 3dfx Voodoo 3/4/5 and Banshee
357options DRM_DEBUG # Include debug printfs (slow)
358
359#
360# Bus mouse
361#
362device mse
363hint.mse.0.at="isa"
364hint.mse.0.port="0x7fd9"
365hint.mse.0.irq="13"
366
367#
368# Network interfaces:
369#
370
371# ce: Cronyx Tau-PCI/32 sync single/dual port G.703/E1 serial adaptor
372# with 32 HDLC subchannels (requires sppp (default), or NETGRAPH if
373# NETGRAPH_CRONYX is configured)
374# cp: Cronyx Tau-PCI sync single/dual/four port
375# V.35/RS-232/RS-530/RS-449/X.21/G.703/E1/E3/T3/STS-1
376# serial adaptor (requires sppp (default), or NETGRAPH if
377# NETGRAPH_CRONYX is configured)
378# cs: IBM Etherjet and other Crystal Semi CS89x0-based adapters and pccard
379# ed: Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503
380# HP PC Lan+, various PC Card devices
381# (requires miibus)
382# ie: AT&T StarLAN 10 and EN100; 3Com 3C507; unknown NI5210;
383# Intel EtherExpress
384# le: AMD Am7900 LANCE and Am79C9xx ILACC/PCnet Ethernet interface driver
385# sbni: Granch SBNI12-xx ISA and PCI adapters
386# snc: National Semiconductor DP8393X SONIC Ethernet adapter driver
387
388# Order for ISA/EISA devices is important here
389
390device ce
391device cp
392device cs
393device ed
394hint.ed.0.at="isa"
395hint.ed.0.port="0x280"
396hint.ed.0.irq="5"
397hint.ed.0.maddr="0xd8000"
398device ie # Hints only required for Starlan
399hint.ie.2.at="isa"
400hint.ie.2.port="0x300"
401hint.ie.2.irq="5"
402hint.ie.2.maddr="0xd0000"
403#device le
404# Hint for the PC98-only C-NET(98)S C-bus front-end of le(4).
405hint.le.0.at="isa"
406hint.le.0.port="0x03d0"
407hint.le.0.irq="6"
408device sbni
409hint.sbni.0.at="isa"
410hint.sbni.0.port="0x210"
411hint.sbni.0.irq="0xefdead"
412hint.sbni.0.flags="0"
413device snc
414hint.snc.0.at="isa"
415hint.snc.0.port="0x888"
416hint.snc.0.irq="6"
417hint.snc.0.maddr="0xc0000"
418
419#
420# SCSI host adapters:
421#
422# ct: WD33C93[ABC] based SCSI host adapters.
423# ncv: NCR 53C500 based SCSI host adapters.
424# nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters.
425# stg: TMC 18C30, 18C50 based SCSI host adapters.
426
427device ct
428hint.ct.0.at="isa"
429device ncv
430device nsp
431device stg
432
433#
434# SafeNet crypto driver: can be moved to the MI NOTES as soon as
435# it's tested on a big-endian machine
436#
437device safe # SafeNet 1141
438options SAFE_DEBUG # enable debugging support: hw.safe.debug
439options SAFE_RNDTEST # enable rndtest support
440
441#####################################################################
442
443#
444# Miscellaneous hardware:
445#
446# apm: Laptop Advanced Power Management (experimental)
447# canbus: CanBe I/O Bus
448# canbepm: CanBe Power Management Controller
449# olpt: XXX
450# pmc: Power Management Controller of NEC PC-98Note
451# pmtimer: Timer device driver for power management events (APM or ACPI)
452# Adjusts system timer at wakeup time
453#
454# Notes on APM
455# The flags takes the following meaning for apm0:
456# 0x0020 Statclock is broken.
457
458device apm
459hint.apm.0.flags="0x20"
460device canbus
461device canbepm
462device olpt
463hint.olpt.0.at="isa"
464hint.olpt.0.port="0x040"
465device pmc
466hint.pmc.0.at="isa"
467hint.pmc.0.port="0x8f0"
468device pmtimer
469
470#
471# Laptop/Notebook options:
472#
473# See also:
474# apm under `Miscellaneous hardware'
475# above.
476
477# For older notebooks that signal a powerfail condition (external
478# power supply dropped, or battery state low) by issuing an NMI:
479
480options POWERFAIL_NMI # make it beep instead of panicing
481
482#
483# Set the number of PV entries per process. Increasing this can
484# stop panics related to heavy use of shared memory. However, that can
485# (combined with large amounts of physical memory) cause panics at
486# boot time due the kernel running out of VM space.
487#
488# If you're tweaking this, you might also want to increase the sysctls
489# "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
490#
491# The value below is the one more than the default.
492#
493options PMAP_SHPGPERPROC=201
494
495#
496# Change the size of the kernel virtual address space. Due to
497# constraints in loader(8) on i386, this must be a multiple of 4.
498# 256 = 1 GB of kernel address space. Increasing this also causes
499# a reduction of the address space in user processes. 512 splits
500# the 4GB cpu address space in half (2GB user, 2GB kernel).
501#
502options KVA_PAGES=260
503
504
505#####################################################################
506# ABI Emulation
507
508# Enable iBCS2 runtime support for SCO and ISC binaries
509options IBCS2
510
511# Emulate spx device for client side of SVR3 local X interface
512options SPX_HACK
513
514# Enable Linux ABI emulation
515options COMPAT_LINUX
516
517# Enable i386 a.out binary support
518options COMPAT_AOUT
519
520# Enable the linux-like proc filesystem support (requires COMPAT_LINUX
521# and PSEUDOFS)
522options LINPROCFS
523
524# Enable the linux-like sys filesystem support (requires COMPAT_LINUX
525# and PSEUDOFS)
526options LINSYSFS
527
528#
529# SysVR4 ABI emulation
530#
531# The svr4 ABI emulator can be statically compiled into the kernel or loaded as
532# a KLD module.
533# The STREAMS network emulation code can also be compiled statically or as a
534# module. If loaded as a module, it must be loaded before the svr4 module
535# (the /usr/sbin/svr4 script does this for you). If compiling statically,
536# the `streams' device must be configured into any kernel which also
537# specifies COMPAT_SVR4. It is possible to have a statically-configured
538# STREAMS device and a dynamically loadable svr4 emulator; the /usr/sbin/svr4
539# script understands that it doesn't need to load the `streams' module under
540# those circumstances.
541# Caveat: At this time, `options KTRACE' is required for the svr4 emulator
542# (whether static or dynamic).
543#
544options COMPAT_SVR4 # build emulator statically
545options DEBUG_SVR4 # enable verbose debugging
546device streams # STREAMS network driver (required for svr4).
547
548# Linux-specific pseudo devices support
549device lindev
550
551
552#####################################################################
553# VM OPTIONS
554
555# Disable the 4 MByte page PSE CPU feature. The PSE feature allows the
556# kernel to use 4 MByte pages to map the kernel instead of 4k pages.
557# This saves on the amount of memory needed for page tables needed to
558# map the kernel. You should only disable this feature as a temporary
559# workaround if you are having problems with it enabled.
560#
561#options DISABLE_PSE
562
563# Disable the global pages PGE CPU feature. The PGE feature allows pages
564# to be marked with the PG_G bit. TLB entries for these pages are not
565# flushed from the cache when %cr3 is reloaded. This can make context
566# switches less expensive. You should only disable this feature as a
567# temporary workaround if you are having problems with it enabled.
568#
569#options DISABLE_PG_G
570
571# KSTACK_PAGES is the number of memory pages to assign to the kernel
572# stack of each thread.
573
574options KSTACK_PAGES=3
575
576#####################################################################
577
578# More undocumented options for linting.
579# Note that documenting these are not considered an affront.
580
581options FB_INSTALL_CDEV # install a CDEV entry in /dev
582
583options I586_PMC_GUPROF=0x70000
584options KBDIO_DEBUG=2
585options KBD_MAXRETRY=4
586options KBD_MAXWAIT=6
587options KBD_RESETDELAY=201
588
589options TIMER_FREQ=((14318182+6)/12)
590
591options VM_KMEM_SIZE
592options VM_KMEM_SIZE_MAX
593options VM_KMEM_SIZE_SCALE
594
595
596#####################################################################
597# Devices we don't want to deal with
598
599nodevice bt
600nodevice adw
601nodevice aha
602nodevice ahb
603nodevice ahd
604nodevice mpt
605nodevice trm
606nodevice wds
607nodevice dpt
608nodevice ciss
609nodevice iir
610nodevice mly
611nodevice ida # Compaq Smart RAID
612nodevice mlx # Mylex DAC960
613nodevice amr # AMI MegaRAID
614nodevice twe # 3ware ATA RAID
| 8#
9
10#
11# We want LINT to cover profiling as well.
12profile 2
13
14
15#####################################################################
16# SMP OPTIONS:
17#
18# The apic device enables the use of the I/O APIC for interrupt delivery.
19# The apic device can be used in both UP and SMP kernels, but is required
20# for SMP kernels. Thus, the apic device is not strictly an SMP option,
21# but it is a prerequisite for SMP.
22#
23
24# Mandatory:
25device apic # I/O apic
26
27#
28# Watchdog routines.
29#
30options MP_WATCHDOG
31
32
33
34#####################################################################
35# CPU OPTIONS
36
37#
38# You must specify at least one CPU (the one you intend to run on);
39# deleting the specification for CPUs you don't need to use may make
40# parts of the system run faster.
41#
42cpu I486_CPU
43cpu I586_CPU # aka Pentium(tm)
44cpu I686_CPU # aka Pentium Pro(tm)
45
46#
47# Options for CPU features.
48#
49# CPU_BLUELIGHTNING_3X enables triple-clock mode on IBM Blue Lightning
50# CPU if CPU supports it. The default is double-clock mode on
51# BlueLightning CPU box.
52#
53# CPU_BLUELIGHTNING_FPU_OP_CACHE enables FPU operand cache on IBM
54# BlueLightning CPU. It works only with Cyrix FPU, and this option
55# should not be used with Intel FPU.
56#
57# CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1).
58#
59# CPU_CYRIX_NO_LOCK enables weak locking for the entire address space
60# of Cyrix 6x86 and 6x86MX CPUs by setting the NO_LOCK bit of CCR1.
61# Otherwise, the NO_LOCK bit of CCR1 is cleared. (NOTE 3)
62#
63# CPU_DIRECT_MAPPED_CACHE sets L1 cache of Cyrix 486DLC CPU in direct
64# mapped mode. Default is 2-way set associative mode.
65#
66# CPU_DISABLE_5X86_LSSER disables load store serialize (i.e., enables
67# reorder). This option should not be used if you use memory mapped
68# I/O device(s).
69#
70# CPU_DISABLE_CMPXCHG disables the CMPXCHG instruction on > i386 IA32
71# machines. VmWare 3.x seems to emulate this instruction poorly, causing
72# the guest OS to run very slowly. This problem appears to be fixed in
73# VmWare 4.x, at least in version 4.5.2, so that enabling this option with
74# VmWare 4.x will result in locking operations to be 20-30 times slower.
75# Enabling this with an SMP kernel will cause the kernel to be unusable.
76#
77# CPU_DISABLE_SSE explicitly prevents I686_CPU from turning on SSE.
78#
79# CPU_FASTER_5X86_FPU enables faster FPU exception handler.
80#
81# CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products
82# for i386 machines.
83#
84# CPU_IORT defines I/O clock delay time (NOTE 1). Default values of
85# I/O clock delay time on Cyrix 5x86 and 6x86 are 0 and 7,respectively
86# (no clock delay).
87#
88# CPU_L2_LATENCY specifies the L2 cache latency value. This option is used
89# only when CPU_PPRO2CELERON is defined and Mendocino Celeron is detected.
90# The default value is 5.
91#
92# CPU_LOOP_EN prevents flushing the prefetch buffer if the destination
93# of a jump is already present in the prefetch buffer on Cyrix 5x86(NOTE
94# 1).
95#
96# CPU_PPRO2CELERON enables L2 cache of Mendocino Celeron CPUs. This option
97# is useful when you use Socket 8 to Socket 370 converter, because most Pentium
98# Pro BIOSs do not enable L2 cache of Mendocino Celeron CPUs.
99#
100# CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1).
101#
102# CPU_SUSP_HLT enables suspend on HALT. If this option is set, CPU
103# enters suspend mode following execution of HALT instruction.
104#
105# CPU_UPGRADE_HW_CACHE eliminates unneeded cache flush instruction(s).
106#
107# CPU_WT_ALLOC enables write allocation on Cyrix 6x86/6x86MX and AMD
108# K5/K6/K6-2 CPUs.
109#
110# CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache
111# flush at hold state.
112#
113# CYRIX_CACHE_REALLY_WORKS enables (1) CPU cache on Cyrix 486 CPUs
114# without cache flush at hold state, and (2) write-back CPU cache on
115# Cyrix 6x86 whose revision < 2.7 (NOTE 2).
116#
117# NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY
118# Pentiums) from locking up when a LOCK CMPXCHG8B instruction is
119# executed. This option is only needed if I586_CPU is also defined,
120# and should be included for any non-Pentium CPU that defines it.
121#
122# NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors
123# which indicates that the 15-16MB range is *definitely* not being
124# occupied by an ISA memory hole.
125#
126# NOTE 1: The options, CPU_BTB_EN, CPU_LOOP_EN, CPU_IORT,
127# CPU_LOOP_EN and CPU_RSTK_EN should not be used because of CPU bugs.
128# These options may crash your system.
129#
130# NOTE 2: If CYRIX_CACHE_REALLY_WORKS is not set, CPU cache is enabled
131# in write-through mode when revision < 2.7. If revision of Cyrix
132# 6x86 >= 2.7, CPU cache is always enabled in write-back mode.
133#
134# NOTE 3: This option may cause failures for software that requires
135# locked cycles in order to operate correctly.
136#
137options CPU_BLUELIGHTNING_3X
138options CPU_BLUELIGHTNING_FPU_OP_CACHE
139options CPU_BTB_EN
140options CPU_DIRECT_MAPPED_CACHE
141options CPU_DISABLE_5X86_LSSER
142options CPU_DISABLE_CMPXCHG
143#options CPU_DISABLE_SSE
144options CPU_FASTER_5X86_FPU
145options CPU_I486_ON_386
146options CPU_IORT
147options CPU_L2_LATENCY=5
148options CPU_LOOP_EN
149options CPU_PPRO2CELERON
150options CPU_RSTK_EN
151options CPU_SUSP_HLT
152options CPU_UPGRADE_HW_CACHE
153options CPU_WT_ALLOC
154options CYRIX_CACHE_WORKS
155options CYRIX_CACHE_REALLY_WORKS
156#options NO_F00F_HACK
157
158# Debug options
159options NPX_DEBUG # enable npx debugging
160
161#
162# PERFMON causes the driver for Pentium/Pentium Pro performance counters
163# to be compiled. See perfmon(4) for more information.
164#
165options PERFMON
166
167
168#####################################################################
169# NETWORKING OPTIONS
170
171#
172# DEVICE_POLLING adds support for mixed interrupt-polling handling
173# of network device drivers, which has significant benefits in terms
174# of robustness to overloads and responsivity, as well as permitting
175# accurate scheduling of the CPU time between kernel network processing
176# and other activities. The drawback is a moderate (up to 1/HZ seconds)
177# potential increase in response times.
178# It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING
179# to achieve smoother behaviour.
180# Additionally, you can enable/disable polling at runtime with help of
181# the ifconfig(8) utility, and select the CPU fraction reserved to
182# userland with the sysctl variable kern.polling.user_frac
183# (default 50, range 0..100).
184#
185# Not all device drivers support this mode of operation at the time of
186# this writing. See polling(4) for more details.
187
188options DEVICE_POLLING
189
190# BPF_JITTER adds support for BPF just-in-time compiler.
191
192options BPF_JITTER
193
194
195#####################################################################
196# MISCELLANEOUS DEVICES AND OPTIONS
197
198#
199# sio: serial ports (see sio(4)), including support for various
200# PC Card devices, such as Modem and NICs
201#
202#device sio
203hint.sio.0.at="isa"
204hint.sio.0.port="0x3F8"
205hint.sio.0.flags="0x10"
206hint.sio.0.irq="4"
207
208# `flags' specific to sio(4).
209# 0x10 enable console support for this unit. Other console flags
210# (if applicable) are ignored unless this is set. Enabling
211# console support does not make the unit the preferred console.
212# Boot with -h or set boot_serial=YES in the loader. For sio(4)
213# specifically, the 0x20 flag can also be set (see above).
214# Currently, at most one unit can have console support; the
215# first one (in config file order) with this flag set is
216# preferred. Setting this flag for sio0 gives the old behaviour.
217# 0x20 force this unit to be the console (unless there is another
218# higher priority console). This replaces the COMCONSOLE option.
219# 0x40 reserve this unit for low level console operations. Do not
220# access the device in any normal way.
221# 0x80 use this port for serial line gdb support in ddb. Also known
222# as debug port.
223# PnP `flags'
224# 0x1 disable probing of this device. Used to prevent your modem
225# from being attached as a PnP modem.
226# Other flags for sio that aren't documented in the man page.
227# 0x20000 enable hardware RTS/CTS and larger FIFOs. Only works for
228# ST16650A-compatible UARTs.
229
230# Options for sio:
231options COM_ESP # Code for Hayes ESP.
232options COM_MULTIPORT # Code for some cards with shared IRQs.
233options CONSPEED=115200 # Speed for serial console
234 # (default 9600).
235
236device speaker #Play IBM BASIC-style noises out your speaker
237hint.speaker.0.at="isa"
238hint.speaker.0.port="0x35"
239device gzip #Exec gzipped a.out's. REQUIRES COMPAT_AOUT!
240device apm_saver # Requires APM
241
242
243#####################################################################
244# HARDWARE BUS CONFIGURATION
245
246#
247# ISA bus
248#
249device isa
250
251#
252# Options for `isa':
253#
254# AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
255# interrupt controller. This saves about 0.7-1.25 usec for each interrupt.
256# This option breaks suspend/resume on some portables.
257#
258# MAXMEM specifies the amount of RAM on the machine; if this is not
259# specified, FreeBSD will first read the amount of memory from the CMOS
260# RAM, so the amount of memory will initially be limited to 64MB or 16MB
261# depending on the BIOS. If the BIOS reports 64MB, a memory probe will
262# then attempt to detect the installed amount of RAM. If this probe
263# fails to detect >64MB RAM you will have to use the MAXMEM option.
264# The amount is in kilobytes, so for a machine with 128MB of RAM, it would
265# be 131072 (128 * 1024).
266#
267# BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
268# reset the CPU for reboot. This is needed on some systems with broken
269# keyboard controllers.
270#
271# EPSON_BOUNCEDMA was to use a bounce buffer to upper 15MB, but it's
272# broken now.
273#
274# EPSON_MEMWIN disables 15-16MB chunk, and enables EPSON memory window.
275#
276
277options AUTO_EOI_1
278
279options MAXMEM=(128*1024)
280#options BROKEN_KEYBOARD_RESET
281options EPSON_BOUNCEDMA
282options EPSON_MEMWIN
283
284#
285# PCI bus & PCI options:
286#
287device pci
288
289#
290# AGP GART support
291device agp
292
293# AGP debugging.
294options AGP_DEBUG
295
296
297#####################################################################
298# HARDWARE DEVICE CONFIGURATION
299
300# PC98 keyboard
301device pckbd
302hint.pckbd.0.at="isa"
303hint.pckbd.0.port="0x041"
304hint.pckbd.0.irq="1"
305
306# GDC screen
307device gdc
308hint.gdc.0.at="isa"
309options LINE30
310
311#
312# The Numeric Processing eXtension driver. This is non-optional.
313device npx
314
315#
316# `flags' for npx0:
317# 0x01 don't use the npx registers to optimize bcopy.
318# 0x02 don't use the npx registers to optimize bzero.
319# 0x04 don't use the npx registers to optimize copyin or copyout.
320# The npx registers are normally used to optimize copying and zeroing when
321# all of the following conditions are satisfied:
322# I586_CPU is an option
323# the cpu is an i586 (perhaps not a Pentium)
324# the probe for npx0 succeeds
325# INT 16 exception handling works.
326# Then copying and zeroing using the npx registers is normally 30-100% faster.
327# The flags can be used to control cases where it doesn't work or is slower.
328# Setting them at boot time using hints works right (the optimizations
329# are not used until later in the bootstrap when npx0 is attached).
330# Flag 0x08 automatically disables the i586 optimized routines.
331#
332
333#
334# Optional devices:
335#
336
337# 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support. This will create
338# the /dev/3dfx0 device to work with glide implementations. This should get
339# linked to /dev/3dfx and /dev/voodoo. Note that this is not the same as
340# the tdfx DRI module from XFree86 and is completely unrelated.
341#
342# To enable Linuxulator support, one must also include COMPAT_LINUX in the
343# config as well. The other option is to load both as modules.
344
345device tdfx # Enable 3Dfx Voodoo support
346device tdfx_linux # Enable Linuxulator support
347
348# Direct Rendering modules for 3D acceleration.
349device drm # DRM core module required by DRM drivers
350device mach64drm # ATI Rage Pro, Rage Mobility P/M, Rage XL
351device mgadrm # AGP Matrox G200, G400, G450, G550
352device r128drm # ATI Rage 128
353device radeondrm # ATI Radeon
354device savagedrm # S3 Savage3D, Savage4
355device sisdrm # SiS 300/305, 540, 630
356device tdfxdrm # 3dfx Voodoo 3/4/5 and Banshee
357options DRM_DEBUG # Include debug printfs (slow)
358
359#
360# Bus mouse
361#
362device mse
363hint.mse.0.at="isa"
364hint.mse.0.port="0x7fd9"
365hint.mse.0.irq="13"
366
367#
368# Network interfaces:
369#
370
371# ce: Cronyx Tau-PCI/32 sync single/dual port G.703/E1 serial adaptor
372# with 32 HDLC subchannels (requires sppp (default), or NETGRAPH if
373# NETGRAPH_CRONYX is configured)
374# cp: Cronyx Tau-PCI sync single/dual/four port
375# V.35/RS-232/RS-530/RS-449/X.21/G.703/E1/E3/T3/STS-1
376# serial adaptor (requires sppp (default), or NETGRAPH if
377# NETGRAPH_CRONYX is configured)
378# cs: IBM Etherjet and other Crystal Semi CS89x0-based adapters and pccard
379# ed: Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503
380# HP PC Lan+, various PC Card devices
381# (requires miibus)
382# ie: AT&T StarLAN 10 and EN100; 3Com 3C507; unknown NI5210;
383# Intel EtherExpress
384# le: AMD Am7900 LANCE and Am79C9xx ILACC/PCnet Ethernet interface driver
385# sbni: Granch SBNI12-xx ISA and PCI adapters
386# snc: National Semiconductor DP8393X SONIC Ethernet adapter driver
387
388# Order for ISA/EISA devices is important here
389
390device ce
391device cp
392device cs
393device ed
394hint.ed.0.at="isa"
395hint.ed.0.port="0x280"
396hint.ed.0.irq="5"
397hint.ed.0.maddr="0xd8000"
398device ie # Hints only required for Starlan
399hint.ie.2.at="isa"
400hint.ie.2.port="0x300"
401hint.ie.2.irq="5"
402hint.ie.2.maddr="0xd0000"
403#device le
404# Hint for the PC98-only C-NET(98)S C-bus front-end of le(4).
405hint.le.0.at="isa"
406hint.le.0.port="0x03d0"
407hint.le.0.irq="6"
408device sbni
409hint.sbni.0.at="isa"
410hint.sbni.0.port="0x210"
411hint.sbni.0.irq="0xefdead"
412hint.sbni.0.flags="0"
413device snc
414hint.snc.0.at="isa"
415hint.snc.0.port="0x888"
416hint.snc.0.irq="6"
417hint.snc.0.maddr="0xc0000"
418
419#
420# SCSI host adapters:
421#
422# ct: WD33C93[ABC] based SCSI host adapters.
423# ncv: NCR 53C500 based SCSI host adapters.
424# nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters.
425# stg: TMC 18C30, 18C50 based SCSI host adapters.
426
427device ct
428hint.ct.0.at="isa"
429device ncv
430device nsp
431device stg
432
433#
434# SafeNet crypto driver: can be moved to the MI NOTES as soon as
435# it's tested on a big-endian machine
436#
437device safe # SafeNet 1141
438options SAFE_DEBUG # enable debugging support: hw.safe.debug
439options SAFE_RNDTEST # enable rndtest support
440
441#####################################################################
442
443#
444# Miscellaneous hardware:
445#
446# apm: Laptop Advanced Power Management (experimental)
447# canbus: CanBe I/O Bus
448# canbepm: CanBe Power Management Controller
449# olpt: XXX
450# pmc: Power Management Controller of NEC PC-98Note
451# pmtimer: Timer device driver for power management events (APM or ACPI)
452# Adjusts system timer at wakeup time
453#
454# Notes on APM
455# The flags takes the following meaning for apm0:
456# 0x0020 Statclock is broken.
457
458device apm
459hint.apm.0.flags="0x20"
460device canbus
461device canbepm
462device olpt
463hint.olpt.0.at="isa"
464hint.olpt.0.port="0x040"
465device pmc
466hint.pmc.0.at="isa"
467hint.pmc.0.port="0x8f0"
468device pmtimer
469
470#
471# Laptop/Notebook options:
472#
473# See also:
474# apm under `Miscellaneous hardware'
475# above.
476
477# For older notebooks that signal a powerfail condition (external
478# power supply dropped, or battery state low) by issuing an NMI:
479
480options POWERFAIL_NMI # make it beep instead of panicing
481
482#
483# Set the number of PV entries per process. Increasing this can
484# stop panics related to heavy use of shared memory. However, that can
485# (combined with large amounts of physical memory) cause panics at
486# boot time due the kernel running out of VM space.
487#
488# If you're tweaking this, you might also want to increase the sysctls
489# "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
490#
491# The value below is the one more than the default.
492#
493options PMAP_SHPGPERPROC=201
494
495#
496# Change the size of the kernel virtual address space. Due to
497# constraints in loader(8) on i386, this must be a multiple of 4.
498# 256 = 1 GB of kernel address space. Increasing this also causes
499# a reduction of the address space in user processes. 512 splits
500# the 4GB cpu address space in half (2GB user, 2GB kernel).
501#
502options KVA_PAGES=260
503
504
505#####################################################################
506# ABI Emulation
507
508# Enable iBCS2 runtime support for SCO and ISC binaries
509options IBCS2
510
511# Emulate spx device for client side of SVR3 local X interface
512options SPX_HACK
513
514# Enable Linux ABI emulation
515options COMPAT_LINUX
516
517# Enable i386 a.out binary support
518options COMPAT_AOUT
519
520# Enable the linux-like proc filesystem support (requires COMPAT_LINUX
521# and PSEUDOFS)
522options LINPROCFS
523
524# Enable the linux-like sys filesystem support (requires COMPAT_LINUX
525# and PSEUDOFS)
526options LINSYSFS
527
528#
529# SysVR4 ABI emulation
530#
531# The svr4 ABI emulator can be statically compiled into the kernel or loaded as
532# a KLD module.
533# The STREAMS network emulation code can also be compiled statically or as a
534# module. If loaded as a module, it must be loaded before the svr4 module
535# (the /usr/sbin/svr4 script does this for you). If compiling statically,
536# the `streams' device must be configured into any kernel which also
537# specifies COMPAT_SVR4. It is possible to have a statically-configured
538# STREAMS device and a dynamically loadable svr4 emulator; the /usr/sbin/svr4
539# script understands that it doesn't need to load the `streams' module under
540# those circumstances.
541# Caveat: At this time, `options KTRACE' is required for the svr4 emulator
542# (whether static or dynamic).
543#
544options COMPAT_SVR4 # build emulator statically
545options DEBUG_SVR4 # enable verbose debugging
546device streams # STREAMS network driver (required for svr4).
547
548# Linux-specific pseudo devices support
549device lindev
550
551
552#####################################################################
553# VM OPTIONS
554
555# Disable the 4 MByte page PSE CPU feature. The PSE feature allows the
556# kernel to use 4 MByte pages to map the kernel instead of 4k pages.
557# This saves on the amount of memory needed for page tables needed to
558# map the kernel. You should only disable this feature as a temporary
559# workaround if you are having problems with it enabled.
560#
561#options DISABLE_PSE
562
563# Disable the global pages PGE CPU feature. The PGE feature allows pages
564# to be marked with the PG_G bit. TLB entries for these pages are not
565# flushed from the cache when %cr3 is reloaded. This can make context
566# switches less expensive. You should only disable this feature as a
567# temporary workaround if you are having problems with it enabled.
568#
569#options DISABLE_PG_G
570
571# KSTACK_PAGES is the number of memory pages to assign to the kernel
572# stack of each thread.
573
574options KSTACK_PAGES=3
575
576#####################################################################
577
578# More undocumented options for linting.
579# Note that documenting these are not considered an affront.
580
581options FB_INSTALL_CDEV # install a CDEV entry in /dev
582
583options I586_PMC_GUPROF=0x70000
584options KBDIO_DEBUG=2
585options KBD_MAXRETRY=4
586options KBD_MAXWAIT=6
587options KBD_RESETDELAY=201
588
589options TIMER_FREQ=((14318182+6)/12)
590
591options VM_KMEM_SIZE
592options VM_KMEM_SIZE_MAX
593options VM_KMEM_SIZE_SCALE
594
595
596#####################################################################
597# Devices we don't want to deal with
598
599nodevice bt
600nodevice adw
601nodevice aha
602nodevice ahb
603nodevice ahd
604nodevice mpt
605nodevice trm
606nodevice wds
607nodevice dpt
608nodevice ciss
609nodevice iir
610nodevice mly
611nodevice ida # Compaq Smart RAID
612nodevice mlx # Mylex DAC960
613nodevice amr # AMI MegaRAID
614nodevice twe # 3ware ATA RAID
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