xref: /freebsd/sys/i386/conf/NOTES (revision 0fa02ea5f786ef02befd46f8f083f48c8cd9630b)
1#
2# NOTES -- Lines that can be cut/pasted into kernel and hints configs.
3#
4# This file contains machine dependent kernel configuration notes.  For
5# machine independent notes, look in /sys/conf/NOTES.
6#
7# $FreeBSD$
8#
9
10#
11# This directive is mandatory; it defines the architecture to be
12# configured for; in this case, the 386 family based IBM-PC and
13# compatibles.
14#
15machine		i386
16
17#
18# We want LINT to cover profiling as well
19profile         2
20
21
22#####################################################################
23# SMP OPTIONS:
24#
25# The apic device enables the use of the I/O APIC for interrupt delivery.
26# The apic device can be used in both UP and SMP kernels, but is required
27# for SMP kernels.  Thus, the apic device is not strictly an SMP option,
28# but it is a prerequisite for SMP.
29#
30# Notes:
31#
32# Be sure to disable 'cpu I386_CPU' for SMP kernels.
33#
34# By default, mixed mode is used to route IRQ0 from the AT timer via
35# the 8259A master PIC through the ExtINT pin on the first I/O APIC.
36# This can be disabled via the NO_MIXED_MODE option.  In that case,
37# IRQ0 will be routed via an intpin on the first I/O APIC.  Not all
38# motherboards hook IRQ0 up to the first I/O APIC even though their
39# MP table or MADT may claim to do so.  That is why mixed mode is
40# enabled by default.
41#
42# HTT CPUs should only be used if they are enabled in the BIOS.  For
43# the ACPI case, ACPI only correctly tells us about any HTT CPUs if
44# they are enabled.  However, most HTT systems do not list HTT CPUs
45# in the MP Table if they are enabled, thus we guess at the HTT CPUs
46# for the MP Table case.  However, we shouldn't try to guess and use
47# these CPUs if HTTT is disabled.  Thus, HTT guessing is only enabled
48# for the MP Table if the user explicitly asks for it via the
49# MPTABLE_FORCE_HTT option.  Do NOT use this option if you have HTT
50# disabled in your BIOS.
51#
52
53# Mandatory:
54device		apic			# I/O apic
55
56# Optional:
57options		MPTABLE_FORCE_HTT	# Enable HTT CPUs with the MP Table
58options 	NO_MIXED_MODE		# Disable use of mixed mode
59
60
61#####################################################################
62# CPU OPTIONS
63
64#
65# You must specify at least one CPU (the one you intend to run on);
66# deleting the specification for CPUs you don't need to use may make
67# parts of the system run faster.
68# I386_CPU is mutually exclusive with the other CPU types.
69#
70#cpu		I386_CPU
71cpu		I486_CPU
72cpu		I586_CPU		# aka Pentium(tm)
73cpu		I686_CPU		# aka Pentium Pro(tm)
74
75#
76# Options for CPU features.
77#
78# CPU_ATHLON_SSE_HACK tries to enable SSE instructions when the BIOS has
79# forgotten to enable them.
80#
81# CPU_BLUELIGHTNING_FPU_OP_CACHE enables FPU operand cache on IBM
82# BlueLightning CPU.  It works only with Cyrix FPU, and this option
83# should not be used with Intel FPU.
84#
85# CPU_BLUELIGHTNING_3X enables triple-clock mode on IBM Blue Lightning
86# CPU if CPU supports it. The default is double-clock mode on
87# BlueLightning CPU box.
88#
89# CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1).
90#
91# CPU_DIRECT_MAPPED_CACHE sets L1 cache of Cyrix 486DLC CPU in direct
92# mapped mode.  Default is 2-way set associative mode.
93#
94# CPU_CYRIX_NO_LOCK enables weak locking for the entire address space
95# of Cyrix 6x86 and 6x86MX CPUs by setting the NO_LOCK bit of CCR1.
96# Otherwise, the NO_LOCK bit of CCR1 is cleared.  (NOTE 3)
97#
98# CPU_DISABLE_5X86_LSSER disables load store serialize (i.e. enables
99# reorder).  This option should not be used if you use memory mapped
100# I/O device(s).
101#
102# CPU_ELAN enables support for AMDs ElanSC520 CPU.
103#    CPU_ELAN_XTAL sets the clock crystal frequency in Hz
104#    CPU_ELAN_PPS enables precision timestamp code.
105#
106# CPU_SOEKRIS enables support www.soekris.com hardware.
107#
108# CPU_ENABLE_SSE enables SSE/MMX2 instructions support.  This is default
109# on I686_CPU and above.
110# CPU_DISABLE_SSE explicitly prevent I686_CPU from turning on SSE.
111#
112# CPU_FASTER_5X86_FPU enables faster FPU exception handler.
113#
114# CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products
115# for i386 machines.
116#
117# CPU_IORT defines I/O clock delay time (NOTE 1).  Default values of
118# I/O clock delay time on Cyrix 5x86 and 6x86 are 0 and 7,respectively
119# (no clock delay).
120#
121# CPU_L2_LATENCY specifed the L2 cache latency value.  This option is used
122# only when CPU_PPRO2CELERON is defined and Mendocino Celeron is detected.
123# The default value is 5.
124#
125# CPU_LOOP_EN prevents flushing the prefetch buffer if the destination
126# of a jump is already present in the prefetch buffer on Cyrix 5x86(NOTE
127# 1).
128#
129# CPU_PPRO2CELERON enables L2 cache of Mendocino Celeron CPUs.  This option
130# is useful when you use Socket 8 to Socket 370 converter, because most Pentium
131# Pro BIOSs do not enable L2 cache of Mendocino Celeron CPUs.
132#
133# CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1).
134#
135# CPU_SUSP_HLT enables suspend on HALT.  If this option is set, CPU
136# enters suspend mode following execution of HALT instruction.
137#
138# CPU_UPGRADE_HW_CACHE eliminates unneeded cache flush instruction(s).
139#
140# CPU_WT_ALLOC enables write allocation on Cyrix 6x86/6x86MX and AMD
141# K5/K6/K6-2 cpus.
142#
143# CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache
144# flush at hold state.
145#
146# CYRIX_CACHE_REALLY_WORKS enables (1) CPU cache on Cyrix 486 CPUs
147# without cache flush at hold state, and (2) write-back CPU cache on
148# Cyrix 6x86 whose revision < 2.7 (NOTE 2).
149#
150# NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY
151# Pentiums) from locking up when a LOCK CMPXCHG8B instruction is
152# executed.  This option is only needed if I586_CPU is also defined,
153# and should be included for any non-Pentium CPU that defines it.
154#
155# NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors
156# which indicates that the 15-16MB range is *definitely* not being
157# occupied by an ISA memory hole.
158#
159# CPU_DISABLE_CMPXCHG disables the CMPXCHG instruction on > i386 IA32
160# machines.  VmWare seems to emulate this instruction poorly, causing
161# the guest OS to run very slowly.  Enabling this with a SMP kernel
162# will cause the kernel to be unusable.
163#
164# NOTE 1: The options, CPU_BTB_EN, CPU_LOOP_EN, CPU_IORT,
165# CPU_LOOP_EN and CPU_RSTK_EN should not be used because of CPU bugs.
166# These options may crash your system.
167#
168# NOTE 2: If CYRIX_CACHE_REALLY_WORKS is not set, CPU cache is enabled
169# in write-through mode when revision < 2.7.  If revision of Cyrix
170# 6x86 >= 2.7, CPU cache is always enabled in write-back mode.
171#
172# NOTE 3: This option may cause failures for software that requires
173# locked cycles in order to operate correctly.
174#
175options 	CPU_ATHLON_SSE_HACK
176options 	CPU_BLUELIGHTNING_FPU_OP_CACHE
177options 	CPU_BLUELIGHTNING_3X
178options 	CPU_BTB_EN
179options 	CPU_DIRECT_MAPPED_CACHE
180options 	CPU_DISABLE_5X86_LSSER
181options 	CPU_ELAN
182options 	CPU_SOEKRIS
183options 	CPU_ELAN_XTAL=32768000
184options 	CPU_ELAN_PPS
185options 	CPU_ENABLE_SSE
186#options 	CPU_DISABLE_SSE
187options 	CPU_FASTER_5X86_FPU
188options 	CPU_I486_ON_386
189options 	CPU_IORT
190options 	CPU_L2_LATENCY=5
191options 	CPU_LOOP_EN
192options 	CPU_PPRO2CELERON
193options 	CPU_RSTK_EN
194options 	CPU_SUSP_HLT
195options 	CPU_UPGRADE_HW_CACHE
196options 	CPU_WT_ALLOC
197options 	CYRIX_CACHE_WORKS
198options 	CYRIX_CACHE_REALLY_WORKS
199#options 	NO_F00F_HACK
200options 	CPU_DISABLE_CMPXCHG
201
202# Debug options
203options 	NPX_DEBUG	# enable npx debugging (FPU/math emu)
204					#new math emulator
205
206#
207# PERFMON causes the driver for Pentium/Pentium Pro performance counters
208# to be compiled.  See perfmon(4) for more information.
209#
210options 	PERFMON
211
212
213#####################################################################
214# NETWORKING OPTIONS
215
216#
217# DEVICE_POLLING adds support for mixed interrupt-polling handling
218# of network device drivers, which has significant benefits in terms
219# of robustness to overloads and responsivity, as well as permitting
220# accurate scheduling of the CPU time between kernel network processing
221# and other activities. The drawback is a moderate (up to 1/HZ seconds)
222# potential increase in response times.
223# It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING
224# to achieve smoother behaviour.
225# Additionally, you can enable/disable polling at runtime with the
226# sysctl variable kern.polling.enable (defaults off), and select
227# the CPU fraction reserved to userland with the sysctl variable
228# kern.polling.user_frac (default 50, range 0..100).
229#
230# Only the "dc" "fxp" and "sis" devices support this mode of operation at
231# the time of this writing.
232
233options 	DEVICE_POLLING
234
235
236#####################################################################
237# CLOCK OPTIONS
238
239# The following options are used for debugging clock behavior only, and
240# should not be used for production systems.
241#
242# CLK_CALIBRATION_LOOP will run the clock calibration loop at startup
243# until the user presses a key.
244
245options 	CLK_CALIBRATION_LOOP
246
247# The following two options measure the frequency of the corresponding
248# clock relative to the RTC (onboard mc146818a).
249
250options 	CLK_USE_I8254_CALIBRATION
251options 	CLK_USE_TSC_CALIBRATION
252
253
254#####################################################################
255# MISCELLANEOUS DEVICES AND OPTIONS
256
257device		speaker		#Play IBM BASIC-style noises out your speaker
258hint.speaker.0.at="isa"
259hint.speaker.0.port="0x61"
260device		gzip		#Exec gzipped a.out's. REQUIRES COMPAT_AOUT!
261device		apm_saver	# Requires APM
262
263
264#####################################################################
265# HARDWARE BUS CONFIGURATION
266
267#
268# ISA bus
269#
270device		isa
271
272#
273# Options for `isa':
274#
275# AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
276# interrupt controller.  This saves about 0.7-1.25 usec for each interrupt.
277# This option breaks suspend/resume on some portables.
278#
279# AUTO_EOI_2 enables the `automatic EOI' feature for the slave 8259A
280# interrupt controller.  This saves about 0.7-1.25 usec for each interrupt.
281# Automatic EOI is documented not to work for for the slave with the
282# original i8259A, but it works for some clones and some integrated
283# versions.
284#
285# MAXMEM specifies the amount of RAM on the machine; if this is not
286# specified, FreeBSD will first read the amount of memory from the CMOS
287# RAM, so the amount of memory will initially be limited to 64MB or 16MB
288# depending on the BIOS.  If the BIOS reports 64MB, a memory probe will
289# then attempt to detect the installed amount of RAM.  If this probe
290# fails to detect >64MB RAM you will have to use the MAXMEM option.
291# The amount is in kilobytes, so for a machine with 128MB of RAM, it would
292# be 131072 (128 * 1024).
293#
294# BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
295# reset the CPU for reboot.  This is needed on some systems with broken
296# keyboard controllers.
297
298options 	COMPAT_OLDISA	#Use ISA shims and glue for old drivers
299options 	AUTO_EOI_1
300#options 	AUTO_EOI_2
301
302options 	MAXMEM=(128*1024)
303#options 	BROKEN_KEYBOARD_RESET
304
305#
306# EISA bus
307#
308# The EISA bus device is `eisa'.  It provides auto-detection and
309# configuration support for all devices on the EISA bus.
310
311device		eisa
312
313# By default, only 10 EISA slots are probed, since the slot numbers
314# above clash with the configuration address space of the PCI subsystem,
315# and the EISA probe is not very smart about this.  This is sufficient
316# for most machines, but in particular the HP NetServer LC series comes
317# with an onboard AIC7770 dual-channel SCSI controller on EISA slot #11,
318# thus you need to bump this figure to 12 for them.
319options 	EISA_SLOTS=12
320
321#
322# MCA bus:
323#
324# The MCA bus device is `mca'.  It provides auto-detection and
325# configuration support for all devices on the MCA bus.
326# No hints are required for MCA.
327
328device		mca
329
330#
331# PCI bus & PCI options:
332#
333device		pci
334
335#
336# AGP GART support
337device		agp
338
339
340#####################################################################
341# HARDWARE DEVICE CONFIGURATION
342
343#
344# Mandatory devices:
345#
346
347# To include support for VGA VESA video modes
348options 	VESA
349
350# Turn on extra debugging checks and output for VESA support.
351options 	VESA_DEBUG
352
353# The pcvt console driver (vt220 compatible).
354device		vt
355hint.vt.0.at="isa"
356options 	XSERVER			# support for running an X server on vt
357options 	FAT_CURSOR		# start with block cursor
358# This PCVT option is for keyboards such as those used on really old ThinkPads
359options 	PCVT_SCANSET=2
360# Other PCVT options are documented in pcvt(4).
361options 	PCVT_24LINESDEF
362options 	PCVT_CTRL_ALT_DEL
363options 	PCVT_META_ESC
364options 	PCVT_NSCREENS=9
365options 	PCVT_PRETTYSCRNS
366options 	PCVT_SCREENSAVER
367options 	PCVT_USEKBDSEC
368options 	PCVT_VT220KEYB
369options 	PCVT_GREENSAVER
370
371#
372# The Numeric Processing eXtension driver.  In addition to this, you
373# may configure a math emulator (see above).  If your machine has a
374# hardware FPU and the kernel configuration includes the npx device
375# *and* a math emulator compiled into the kernel, the hardware FPU
376# will be used, unless it is found to be broken or unless "flags" to
377# npx0 includes "0x08", which requests preference for the emulator.
378device		npx
379hint.npx.0.flags="0x0"
380hint.npx.0.irq="13"
381
382#
383# `flags' for npx0:
384#	0x01	don't use the npx registers to optimize bcopy.
385#	0x02	don't use the npx registers to optimize bzero.
386#	0x04	don't use the npx registers to optimize copyin or copyout.
387#	0x08	use emulator even if hardware FPU is available.
388# The npx registers are normally used to optimize copying and zeroing when
389# all of the following conditions are satisfied:
390#	I586_CPU is an option
391#	the cpu is an i586 (perhaps not a Pentium)
392#	the probe for npx0 succeeds
393#	INT 16 exception handling works.
394# Then copying and zeroing using the npx registers is normally 30-100% faster.
395# The flags can be used to control cases where it doesn't work or is slower.
396# Setting them at boot time using userconfig works right (the optimizations
397# are not used until later in the bootstrap when npx0 is attached).
398# Flag 0x08 automatically disables the i586 optimized routines.
399#
400
401#
402# Optional devices:
403#
404
405# 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support. This will create
406# the /dev/3dfx0 device to work with glide implementations. This should get
407# linked to /dev/3dfx and /dev/voodoo. Note that this is not the same as
408# the tdfx DRI module from XFree86 and is completely unrelated.
409#
410# To enable Linuxulator support, one must also include COMPAT_LINUX in the
411# config as well, or you will not have the dependencies. The other option
412# is to load both as modules.
413
414device 		tdfx			# Enable 3Dfx Voodoo support
415options 	TDFX_LINUX		# Enable Linuxulator support
416
417#
418# ACPI support using the Intel ACPI Component Architecture reference
419# implementation.
420#
421# ACPI_DEBUG enables the use of the debug.acpi.level and debug.acpi.layer
422# kernel environment variables to select initial debugging levels for the
423# Intel ACPICA code.  (Note that the Intel code must also have USE_DEBUGGER
424# defined when it is built).
425#
426# ACPI_MAX_THREADS sets the number of task threads started.
427#
428# ACPI_NO_SEMAPHORES makes the AcpiOs*Semaphore routines a no-op.
429#
430# ACPICA_PEDANTIC enables strict checking of AML.  Our default is to
431# relax these checks to allow code generated by the Microsoft compiler
432# to still execute.
433#
434# Note that building ACPI into the kernel is deprecated; the module is
435# normally loaded automatically by the loader.
436#
437device		acpi
438options 	ACPI_DEBUG
439options 	ACPI_MAX_THREADS=1
440#!options 	ACPI_NO_SEMAPHORES
441#!options 	ACPICA_PEDANTIC
442
443# DRM options:
444# mgadrm:    AGP Matrox G200, G400, G450, G550
445# r128drm:   ATI Rage 128
446# radeondrm: ATI Radeon up to 9000/9100
447# sisdrm:    SiS 300/305,540,630
448# tdfxdrm:   3dfx Voodoo 3/4/5 and Banshee
449# DRM_DEBUG: include debug printfs, very slow
450#
451# mga requires AGP in the kernel, and it is recommended
452# for AGP r128 and radeon cards.
453
454device		mgadrm
455device		"r128drm"
456device		radeondrm
457device		sisdrm
458device		tdfxdrm
459
460options 	DRM_DEBUG
461
462# M-systems DiskOnchip products see src/sys/contrib/dev/fla/README
463device		fla
464hint.fla.0.at="isa"
465
466#
467# mse: Logitech and ATI InPort bus mouse ports
468
469device		mse
470hint.mse.0.at="isa"
471hint.mse.0.port="0x23c"
472hint.mse.0.irq="5"
473
474#
475# Network interfaces:
476#
477
478# ar:   Arnet SYNC/570i hdlc sync 2/4 port V.35/X.21 serial driver
479#       (requires sppp)
480# ath:	Atheros a/b/g WiFi adapters (requires ath_hal and wlan)
481# cx:   Cronyx/Sigma multiport sync/async (with Cisco or PPP framing)
482# ed:   Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503
483#       HP PC Lan+, various PC Card devices (refer to etc/defauls/pccard.conf)
484#       (requires miibus)
485# el:   3Com 3C501 (slow!)
486# ie:   AT&T StarLAN 10 and EN100; 3Com 3C507; unknown NI5210;
487#       Intel EtherExpress
488# le:   Digital Equipment EtherWorks 2 and EtherWorks 3 (DEPCA, DE100,
489#       DE101, DE200, DE201, DE202, DE203, DE204, DE205, DE422)
490# lnc:  Lance/PCnet cards (Isolan, Novell NE2100, NE32-VL, AMD Am7990 and
491#       Am79C960)
492# oltr: Olicom ISA token-ring adapters OC-3115, OC-3117, OC-3118 and OC-3133
493#       (no hints needed).
494#       Olicom PCI token-ring adapters OC-3136, OC-3137, OC-3139, OC-3140,
495#       OC-3141, OC-3540, OC-3250
496# rdp:  RealTek RTL 8002-based pocket ethernet adapters
497# sbni:	Granch SBNI12-xx ISA and PCI adapters
498# sr:   RISCom/N2 hdlc sync 1/2 port V.35/X.21 serial driver (requires sppp)
499# wl:	Lucent Wavelan (ISA card only).
500
501# Order for ISA/EISA devices is important here
502
503device		ar
504hint.ar.0.at="isa"
505hint.ar.0.port="0x300"
506hint.ar.0.irq="10"
507hint.ar.0.maddr="0xd0000"
508device		cx
509hint.cx.0.at="isa"
510hint.cx.0.port="0x240"
511hint.cx.0.irq="15"
512hint.cx.0.drq="7"
513device		ed
514#options 	ED_NO_MIIBUS		# Disable ed miibus support
515hint.ed.0.at="isa"
516hint.ed.0.port="0x280"
517hint.ed.0.irq="5"
518hint.ed.0.maddr="0xd8000"
519device		el	1
520hint.el.0.at="isa"
521hint.el.0.port="0x300"
522hint.el.0.irq="9"
523device		ie			# Hints only required for Starlan
524hint.ie.2.at="isa"
525hint.ie.2.port="0x300"
526hint.ie.2.irq="5"
527hint.ie.2.maddr="0xd0000"
528device		le	1
529hint.le.0.at="isa"
530hint.le.0.port="0x300"
531hint.le.0.irq="5"
532hint.le.0.maddr="0xd0000"
533device		lnc
534hint.lnc.0.at="isa"
535hint.lnc.0.port="0x280"
536hint.lnc.0.irq="10"
537hint.lnc.0.drq="0"
538device		rdp	1
539hint.rdp.0.at="isa"
540hint.rdp.0.port="0x378"
541hint.rdp.0.irq="7"
542hint.rdp.0.flags="2"
543device		sbni
544hint.sbni.0.at="isa"
545hint.sbni.0.port="0x210"
546hint.sbni.0.irq="0xefdead"
547hint.sbni.0.flags="0"
548device		sr
549hint.sr.0.at="isa"
550hint.sr.0.port="0x300"
551hint.sr.0.irq="5"
552hint.sr.0.maddr="0xd0000"
553device		oltr
554hint.oltr.0.at="isa"
555device		wl
556hint.wl.0.at="isa"
557hint.wl.0.port="0x300"
558options 	WLCACHE		# enables the signal-strength cache
559options 	WLDEBUG		# enables verbose debugging output
560
561device		ath
562device		ath_hal		# Atheros HAL (includes binary component)
563#device		wlan		# 802.11 layer
564
565#
566# ATA raid adapters
567#
568device		pst
569
570#
571# SCSI host adapters:
572#
573# ncv: NCR 53C500 based SCSI host adapters.
574# nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters.
575# stg: TMC 18C30, 18C50 based SCSI host adapters.
576
577device          ncv
578device          nsp
579device          stg
580hint.stg.0.at="isa"
581hint.stg.0.port="0x140"
582hint.stg.0.port="11"
583
584#
585# Adaptec FSA RAID controllers, including integrated DELL controllers,
586# the Dell PERC 2/QC and the HP NetRAID-4M
587device		aac
588device		aacp	# SCSI Passthrough interface (optional, CAM required)
589
590#
591# IBM (now Adaptec) ServeRAID controllers
592device		ips
593
594#
595# SafeNet crypto driver: can be moved to the MI NOTES as soon as
596# it's tested on a big-endian machine
597#
598device		safe		# SafeNet 1141
599options		SAFE_DEBUG	# enable debugging support: hw.safe.debug
600options		SAFE_RNDTEST	# enable rndtest support
601
602#####################################################################
603
604#
605# Miscellaneous hardware:
606#
607# wt: Wangtek and Archive QIC-02/QIC-36 tape drives
608# ctx: Cortex-I frame grabber
609# apm: Laptop Advanced Power Management (experimental)
610# pmtimer: Timer device driver for power management events (APM or ACPI)
611# spigot: The Creative Labs Video Spigot video-acquisition board
612# digi: Digiboard driver
613# gp:  National Instruments AT-GPIB and AT-GPIB/TNT board, PCMCIA-GPIB
614# asc: GI1904-based hand scanners, e.g. the Trust Amiscan Grey
615# gsc: Genius GS-4500 hand scanner.
616# spic: Sony Programmable I/O controller (VAIO notebooks)
617# stl: Stallion EasyIO and EasyConnection 8/32 (cd1400 based)
618# stli: Stallion EasyConnection 8/64, ONboard, Brumby (intelligent)
619
620# Notes on APM
621#  The flags takes the following meaning for apm0:
622#    0x0020  Statclock is broken.
623#  If apm is omitted, some systems require sysctl kern.timecounter.method=1
624#  for correct timekeeping.
625
626# Notes on the spigot:
627#  The video spigot is at 0xad6.  This port address can not be changed.
628#  The irq values may only be 10, 11, or 15
629#  I/O memory is an 8kb region.  Possible values are:
630#    0a0000, 0a2000, ..., 0fffff, f00000, f02000, ..., ffffff
631#    The start address must be on an even boundary.
632#  Add the following option if you want to allow non-root users to be able
633#  to access the spigot.  This option is not secure because it allows users
634#  direct access to the I/O page.
635#  	options SPIGOT_UNSECURE
636
637# Notes on the Specialix SI/XIO driver:
638#  The host card is memory, not IO mapped.
639#  The Rev 1 host cards use a 64K chunk, on a 32K boundary.
640#  The Rev 2 host cards use a 32K chunk, on a 32K boundary.
641#  The cards can use an IRQ of 11, 12 or 15.
642
643# Notes on the Sony Programmable I/O controller
644#  This is a temporary driver that should someday be replaced by something
645#  that hooks into the ACPI layer. The device is hooked to the PIIX4's
646#  General Device 10 decoder, which means you have to fiddle with PCI
647#  registers to map it in, even though it is otherwise treated here as
648#  an ISA device. At the moment, the driver polls, although the device
649#  is capable of generating interrupts. It largely undocumented.
650#  The port location in the hint is where you WANT the device to be
651#  mapped. 0x10a0 seems to be traditional. At the moment the jogdial
652#  is the only thing truly supported, but aparently a fair percentage
653#  of the Vaio extra features are controlled by this device.
654
655# Notes on the Stallion stl and stli drivers:
656#  See src/i386/isa/README.stl for complete instructions.
657#  This is version 0.0.5alpha, unsupported by Stallion.
658#  The stl driver has a secondary IO port hard coded at 0x280.  You need
659#     to change src/i386/isa/stallion.c if you reconfigure this on the boards.
660#  The "flags" and "msize" settings on the stli driver depend on the board:
661#	EasyConnection 8/64 ISA:     flags 23         msize 0x1000
662#	EasyConnection 8/64 EISA:    flags 24         msize 0x10000
663#	EasyConnection 8/64 MCA:     flags 25         msize 0x1000
664#	ONboard ISA:                 flags 4          msize 0x10000
665#	ONboard EISA:                flags 7          msize 0x10000
666#	ONboard MCA:                 flags 3          msize 0x10000
667#	Brumby:                      flags 2          msize 0x4000
668#	Stallion:                    flags 1          msize 0x10000
669
670device		wt	1
671hint.wt.0.at="isa"
672hint.wt.0.port="0x300"
673hint.wt.0.irq="5"
674hint.wt.0.drq="1"
675device		ctx
676hint.ctx.0.at="isa"
677hint.ctx.0.port="0x230"
678hint.ctx.0.maddr="0xd0000"
679device		spigot	1
680hint.spigot.0.at="isa"
681hint.spigot.0.port="0xad6"
682hint.spigot.0.irq="15"
683hint.spigot.0.maddr="0xee000"
684device		apm
685hint.apm.0.flags="0x20"
686device		pmtimer			# Adjust system timer at wakeup time
687device		gp
688hint.gp.0.at="isa"
689hint.gp.0.port="0x2c0"
690device		gsc	1
691hint.gsc.0.at="isa"
692hint.gsc.0.port="0x270"
693hint.gsc.0.drq="3"
694device		digi
695hint.digi.0.at="isa"
696hint.digi.0.port="0x104"
697hint.digi.0.maddr="0xd0000"
698# BIOS & FEP/OS components of device digi.
699device		digi_CX
700device		digi_CX_PCI
701device		digi_EPCX
702device		digi_EPCX_PCI
703device		digi_Xe
704device		digi_Xem
705device		digi_Xr
706device		asc	1
707hint.asc.0.at="isa"
708hint.asc.0.port="0x3EB"
709hint.asc.0.drq="3"
710hint.asc.0.irq="10"
711device		spic
712hint.spic.0.at="isa"
713hint.spic.0.port="0x10a0"
714device		stl
715hint.stl.0.at="isa"
716hint.stl.0.port="0x2a0"
717hint.stl.0.irq="10"
718device		stli
719hint.stli.0.at="isa"
720hint.stli.0.port="0x2a0"
721hint.stli.0.maddr="0xcc000"
722hint.stli.0.flags="23"
723hint.stli.0.msize="0x1000"
724# HOT1 Xilinx 6200 card (http://www.vcc.com/)
725device		xrpu
726
727#
728# Laptop/Notebook options:
729#
730# See also:
731#  apm under `Miscellaneous hardware'
732# above.
733
734# For older notebooks that signal a powerfail condition (external
735# power supply dropped, or battery state low) by issuing an NMI:
736
737options 	POWERFAIL_NMI	# make it beep instead of panicing
738
739#
740# I2C Bus
741#
742# Philips i2c bus support is provided by the `iicbus' device.
743#
744# Supported interfaces:
745# pcf	Philips PCF8584 ISA-bus controller
746#
747device		pcf
748hint.pcf.0.at="isa"
749hint.pcf.0.port="0x320"
750hint.pcf.0.irq="5"
751
752#---------------------------------------------------------------------------
753# ISDN4BSD
754#
755# See /usr/share/examples/isdn/ROADMAP for an introduction to isdn4bsd.
756#
757# i4b passive ISDN cards support contains the following hardware drivers:
758#
759#	isic  - Siemens/Infineon ISDN ISAC/HSCX/IPAC chipset driver
760#	iwic  - Winbond W6692 PCI bus ISDN S/T interface controller
761#	ifpi  - AVM Fritz!Card PCI driver
762#	ifpi2  - AVM Fritz!Card PCI version 2 driver
763#	ihfc  - Cologne Chip HFC ISA/ISA-PnP chipset driver
764#	ifpnp - AVM Fritz!Card PnP driver
765#	itjc  - Siemens ISAC / TJNet Tiger300/320 chipset
766#
767# i4b active ISDN cards support contains the following hardware drivers:
768#
769#	iavc  - AVM B1 PCI, AVM B1 ISA, AVM T1
770#
771# Note that the ``options'' (if given) and ``device'' lines must BOTH
772# be uncommented to enable support for a given card !
773#
774# In addition to a hardware driver (and probably an option) the mandatory
775# ISDN protocol stack devices and the mandatory support device must be
776# enabled as well as one or more devices from the optional devices section.
777#
778#---------------------------------------------------------------------------
779#	isic driver (Siemens/Infineon chipsets)
780#
781device	isic
782#
783# ISA bus non-PnP Cards:
784# ----------------------
785#
786# Teles S0/8 or Niccy 1008
787options 	TEL_S0_8
788hint.isic.0.at="isa"
789hint.isic.0.maddr="0xd0000"
790hint.isic.0.irq="5"
791hint.isic.0.flags="1"
792#
793# Teles S0/16 or Creatix ISDN-S0 or Niccy 1016
794options 	TEL_S0_16
795hint.isic.0.at="isa"
796hint.isic.0.port="0xd80"
797hint.isic.0.maddr="0xd0000"
798hint.isic.0.irq="5"
799hint.isic.0.flags="2"
800#
801# Teles S0/16.3
802options 	TEL_S0_16_3
803hint.isic.0.at="isa"
804hint.isic.0.port="0xd80"
805hint.isic.0.irq="5"
806hint.isic.0.flags="3"
807#
808# AVM A1 or AVM Fritz!Card
809options 	AVM_A1
810hint.isic.0.at="isa"
811hint.isic.0.port="0x340"
812hint.isic.0.irq="5"
813hint.isic.0.flags="4"
814#
815# USRobotics Sportster ISDN TA intern
816options 	USR_STI
817hint.isic.0.at="isa"
818hint.isic.0.port="0x268"
819hint.isic.0.irq="5"
820hint.isic.0.flags="7"
821#
822# ITK ix1 Micro ( < V.3, non-PnP version )
823options 	ITKIX1
824hint.isic.0.at="isa"
825hint.isic.0.port="0x398"
826hint.isic.0.irq="10"
827hint.isic.0.flags="18"
828#
829# ELSA PCC-16
830options 	ELSA_PCC16
831hint.isic.0.at="isa"
832hint.isic.0.port="0x360"
833hint.isic.0.irq="10"
834hint.isic.0.flags="20"
835#
836# ISA bus PnP Cards:
837# ------------------
838#
839# Teles S0/16.3 PnP
840options 	TEL_S0_16_3_P
841#
842# Creatix ISDN-S0 P&P
843options 	CRTX_S0_P
844#
845# Dr. Neuhaus Niccy Go@
846options 	DRN_NGO
847#
848# Sedlbauer Win Speed
849options 	SEDLBAUER
850#
851# Dynalink IS64PH
852options 	DYNALINK
853#
854# ELSA QuickStep 1000pro ISA
855options 	ELSA_QS1ISA
856#
857# Siemens I-Surf 2.0
858options 	SIEMENS_ISURF2
859#
860# Asuscom ISDNlink 128K ISA
861options 	ASUSCOM_IPAC
862#
863# Eicon Diehl DIVA 2.0 and 2.02
864options 	EICON_DIVA
865#
866# Compaq Microcom 610 ISDN card (Compaq series PSB2222I)
867options 	COMPAQ_M610
868#
869# PCI bus Cards:
870# --------------
871#
872# Cyclades Cyclom-Y PCI serial driver
873device		cy	1
874options 	CY_PCI_FASTINTR		# Use with cy_pci unless irq is shared
875hint.cy.0.at="isa"
876hint.cy.0.irq="10"
877hint.cy.0.maddr="0xd4000"
878hint.cy.0.msize="0x2000"
879#
880#---------------------------------------------------------------------------
881# ELSA MicroLink ISDN/PCI (same as ELSA QuickStep 1000pro PCI)
882options 	ELSA_QS1PCI
883#
884#
885#---------------------------------------------------------------------------
886#	ifpnp driver for AVM Fritz!Card PnP
887#
888# AVM Fritz!Card PnP
889device ifpnp
890#
891#---------------------------------------------------------------------------
892#	ihfc driver for Cologne Chip ISA chipsets (experimental!)
893#
894# Teles 16.3c ISA PnP
895# AcerISDN P10 ISA PnP
896# TELEINT ISDN SPEED No.1
897device ihfc
898#
899#---------------------------------------------------------------------------
900#	ifpi driver for AVM Fritz!Card PCI
901#
902# AVM Fritz!Card PCI
903device  ifpi
904#
905#---------------------------------------------------------------------------
906#	ifpi2 driver for AVM Fritz!Card PCI version 2
907#
908# AVM Fritz!Card PCI version 2
909device  "ifpi2"
910#
911#---------------------------------------------------------------------------
912#	iwic driver for Winbond W6692 chipset
913#
914# ASUSCOM P-IN100-ST-D (and other Winbond W6692 based cards)
915device  iwic
916#
917#---------------------------------------------------------------------------
918#	itjc driver for Simens ISAC / TJNet Tiger300/320 chipset
919#
920# Traverse Technologies NETjet-S
921# Teles PCI-TJ
922device  itjc
923#
924#---------------------------------------------------------------------------
925#	iavc driver (AVM active cards, needs i4bcapi driver!)
926#
927device	iavc
928#
929# AVM B1 ISA bus (PnP mode not supported!)
930# ----------------------------------------
931hint.iavc.0.at="isa"
932hint.iavc.0.port="0x150"
933hint.iavc.0.irq="5"
934#
935#---------------------------------------------------------------------------
936#	ISDN Protocol Stack - mandatory for all hardware drivers
937#
938# Q.921 / layer 2 - i4b passive cards D channel handling
939device		"i4bq921"
940#
941# Q.931 / layer 3 - i4b passive cards D channel handling
942device		"i4bq931"
943#
944# layer 4 - i4b common passive and active card handling
945device		"i4b"
946#
947#---------------------------------------------------------------------------
948#	ISDN devices - mandatory for all hardware drivers
949#
950# userland driver to do ISDN tracing (for passive cards only)
951device		"i4btrc"	4
952#
953# userland driver to control the whole thing
954device		"i4bctl"
955#
956#---------------------------------------------------------------------------
957#	ISDN devices - optional
958#
959# userland driver for access to raw B channel
960device		"i4brbch"	4
961#
962# userland driver for telephony
963device		"i4btel"	2
964#
965# network driver for IP over raw HDLC ISDN
966device		"i4bipr"	4
967# enable VJ header compression detection for ipr i/f
968options 	IPR_VJ
969# enable logging of the first n IP packets to isdnd (n=32 here)
970options 	IPR_LOG=32
971#
972# network driver for sync PPP over ISDN; requires an equivalent
973# number of sppp device to be configured
974device		"i4bisppp"	4
975#
976# B-channel interface to the netgraph subsystem
977device		"i4bing"	2
978#
979# CAPI driver needed for active ISDN cards (see iavc driver above)
980device		"i4bcapi"
981#
982#---------------------------------------------------------------------------
983
984#
985# Set the number of PV entries per process.  Increasing this can
986# stop panics related to heavy use of shared memory. However, that can
987# (combined with large amounts of physical memory) cause panics at
988# boot time due the kernel running out of VM space.
989#
990# If you're tweaking this, you might also want to increase the sysctls
991# "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
992#
993# The value below is the one more than the default.
994#
995options 	PMAP_SHPGPERPROC=201
996
997#
998# Change the size of the kernel virtual address space.  Due to
999# constraints in loader(8) on i386, this must be a multiple of 4.
1000# 256 = 1 GB of kernel address space.  Increasing this also causes
1001# a reduction of the address space in user processes.  512 splits
1002# the 4GB cpu address space in half (2GB user, 2GB kernel).
1003#
1004options 	KVA_PAGES=260
1005
1006
1007#####################################################################
1008# ABI Emulation
1009
1010# Enable iBCS2 runtime support for SCO and ISC binaries
1011options 	IBCS2
1012
1013# Emulate spx device for client side of SVR3 local X interface
1014options 	SPX_HACK
1015
1016# Enable Linux ABI emulation
1017options 	COMPAT_LINUX
1018
1019# Enable i386 a.out binary support
1020options 	COMPAT_AOUT
1021
1022# Enable the linux-like proc filesystem support (requires COMPAT_LINUX
1023# and PSEUDOFS)
1024options 	LINPROCFS
1025
1026#
1027# SysVR4 ABI emulation
1028#
1029# The svr4 ABI emulator can be statically compiled into the kernel or loaded as
1030# a KLD module.
1031# The STREAMS network emulation code can also be compiled statically or as a
1032# module.  If loaded as a module, it must be loaded before the svr4 module
1033# (the /usr/sbin/svr4 script does this for you).  If compiling statically,
1034# the `streams' device must be configured into any kernel which also
1035# specifies COMPAT_SVR4.  It is possible to have a statically-configured
1036# STREAMS device and a dynamically loadable svr4 emulator;  the /usr/sbin/svr4
1037# script understands that it doesn't need to load the `streams' module under
1038# those circumstances.
1039# Caveat:  At this time, `options KTRACE' is required for the svr4 emulator
1040# (whether static or dynamic).
1041#
1042options 	COMPAT_SVR4	# build emulator statically
1043options 	DEBUG_SVR4	# enable verbose debugging
1044device		streams		# STREAMS network driver (required for svr4).
1045
1046
1047#####################################################################
1048# VM OPTIONS
1049
1050# Disable the 4 MByte page PSE CPU feature.  The PSE feature allows the
1051# kernel to use a 4 MByte pages to map the kernel instead of 4k pages.
1052# This saves on the amount of memory needed for page tables needed to
1053# map the kernel.  You should only disable this feature as a temporary
1054# workaround if you are having problems with it enabled.
1055#
1056#options 	DISABLE_PSE
1057
1058# Disable the global pages PGE CPU feature.  The PGE feature allows pages
1059# to be marked with the PG_G bit.  TLB entries for these pages are not
1060# flushed from the cache when %cr3 is reloaded.  This can make context
1061# switches less expensive.  You should only disable this feature as a
1062# temporary workaround if you are having problems with it enabled.
1063#
1064#options 	DISABLE_PG_G
1065
1066# KSTACK_PAGES is the number of memory pages to assign to the kernel
1067# stack of each thread.
1068
1069options 	KSTACK_PAGES=3
1070
1071#####################################################################
1072
1073# More undocumented options for linting.
1074# Note that documenting these are not considered an affront.
1075
1076options 	FB_INSTALL_CDEV		# install a CDEV entry in /dev
1077
1078# PECOFF module (Win32 Execution Format)
1079options 	PECOFF_SUPPORT
1080options 	PECOFF_DEBUG
1081
1082options 	ENABLE_ALART
1083options 	I4B_SMP_WORKAROUND
1084options 	I586_PMC_GUPROF=0x70000
1085options 	KBDIO_DEBUG=2
1086options 	KBD_MAXRETRY=4
1087options 	KBD_MAXWAIT=6
1088options 	KBD_RESETDELAY=201
1089
1090options 	PSM_DEBUG=1
1091
1092options 	TIMER_FREQ=((14318182+6)/12)
1093
1094options 	VM_KMEM_SIZE
1095options 	VM_KMEM_SIZE_MAX
1096options 	VM_KMEM_SIZE_SCALE
1097