NOTES revision 156272
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: head/sys/pc98/conf/NOTES 156272 2006-03-04 07:31:58Z nyan $
8#
9
10options 	PC98
11
12#
13# We want LINT to cover profiling as well.
14profile         2
15
16
17#####################################################################
18# SMP OPTIONS:
19#
20# The apic device enables the use of the I/O APIC for interrupt delivery.
21# The apic device can be used in both UP and SMP kernels, but is required
22# for SMP kernels.  Thus, the apic device is not strictly an SMP option,
23# but it is a prerequisite for SMP.
24#
25
26# Mandatory:
27device		apic			# I/O apic
28
29#
30# Watchdog routines.
31#
32options 	MP_WATCHDOG
33
34# Debugging options.
35#
36options		STOP_NMI		# Stop CPUS using NMI instead of IPI
37
38
39
40#####################################################################
41# CPU OPTIONS
42
43#
44# You must specify at least one CPU (the one you intend to run on);
45# deleting the specification for CPUs you don't need to use may make
46# parts of the system run faster.
47#
48cpu		I486_CPU
49cpu		I586_CPU		# aka Pentium(tm)
50cpu		I686_CPU		# aka Pentium Pro(tm)
51
52#
53# Options for CPU features.
54#
55# CPU_BLUELIGHTNING_3X enables triple-clock mode on IBM Blue Lightning
56# CPU if CPU supports it.  The default is double-clock mode on
57# BlueLightning CPU box.
58#
59# CPU_BLUELIGHTNING_FPU_OP_CACHE enables FPU operand cache on IBM
60# BlueLightning CPU.  It works only with Cyrix FPU, and this option
61# should not be used with Intel FPU.
62#
63# CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1).
64#
65# CPU_CYRIX_NO_LOCK enables weak locking for the entire address space
66# of Cyrix 6x86 and 6x86MX CPUs by setting the NO_LOCK bit of CCR1.
67# Otherwise, the NO_LOCK bit of CCR1 is cleared.  (NOTE 3)
68#
69# CPU_DIRECT_MAPPED_CACHE sets L1 cache of Cyrix 486DLC CPU in direct
70# mapped mode.  Default is 2-way set associative mode.
71#
72# CPU_DISABLE_5X86_LSSER disables load store serialize (i.e., enables
73# reorder).  This option should not be used if you use memory mapped
74# I/O device(s).
75#
76# CPU_DISABLE_CMPXCHG disables the CMPXCHG instruction on > i386 IA32
77# machines.  VmWare 3.x seems to emulate this instruction poorly, causing
78# the guest OS to run very slowly.  This problem appears to be fixed in
79# VmWare 4.x, at least in version 4.5.2, so that enabling this option with
80# VmWare 4.x will result in locking operations to be 20-30 times slower.
81# Enabling this with an SMP kernel will cause the kernel to be unusable.
82#
83# CPU_DISABLE_SSE explicitly prevents I686_CPU from turning on SSE.
84#
85# CPU_FASTER_5X86_FPU enables faster FPU exception handler.
86#
87# CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products
88# for i386 machines.
89#
90# CPU_IORT defines I/O clock delay time (NOTE 1).  Default values of
91# I/O clock delay time on Cyrix 5x86 and 6x86 are 0 and 7,respectively
92# (no clock delay).
93#
94# CPU_L2_LATENCY specifies the L2 cache latency value.  This option is used
95# only when CPU_PPRO2CELERON is defined and Mendocino Celeron is detected.
96# The default value is 5.
97#
98# CPU_LOOP_EN prevents flushing the prefetch buffer if the destination
99# of a jump is already present in the prefetch buffer on Cyrix 5x86(NOTE
100# 1).
101#
102# CPU_PPRO2CELERON enables L2 cache of Mendocino Celeron CPUs.  This option
103# is useful when you use Socket 8 to Socket 370 converter, because most Pentium
104# Pro BIOSs do not enable L2 cache of Mendocino Celeron CPUs.
105#
106# CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1).
107#
108# CPU_SUSP_HLT enables suspend on HALT.  If this option is set, CPU
109# enters suspend mode following execution of HALT instruction.
110#
111# CPU_UPGRADE_HW_CACHE eliminates unneeded cache flush instruction(s).
112#
113# CPU_WT_ALLOC enables write allocation on Cyrix 6x86/6x86MX and AMD
114# K5/K6/K6-2 CPUs.
115#
116# CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache
117# flush at hold state.
118#
119# CYRIX_CACHE_REALLY_WORKS enables (1) CPU cache on Cyrix 486 CPUs
120# without cache flush at hold state, and (2) write-back CPU cache on
121# Cyrix 6x86 whose revision < 2.7 (NOTE 2).
122#
123# NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY
124# Pentiums) from locking up when a LOCK CMPXCHG8B instruction is
125# executed.  This option is only needed if I586_CPU is also defined,
126# and should be included for any non-Pentium CPU that defines it.
127#
128# NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors
129# which indicates that the 15-16MB range is *definitely* not being
130# occupied by an ISA memory hole.
131#
132# NOTE 1: The options, CPU_BTB_EN, CPU_LOOP_EN, CPU_IORT,
133# CPU_LOOP_EN and CPU_RSTK_EN should not be used because of CPU bugs.
134# These options may crash your system.
135#
136# NOTE 2: If CYRIX_CACHE_REALLY_WORKS is not set, CPU cache is enabled
137# in write-through mode when revision < 2.7.  If revision of Cyrix
138# 6x86 >= 2.7, CPU cache is always enabled in write-back mode.
139#
140# NOTE 3: This option may cause failures for software that requires
141# locked cycles in order to operate correctly.
142#
143options 	CPU_BLUELIGHTNING_3X
144options 	CPU_BLUELIGHTNING_FPU_OP_CACHE
145options 	CPU_BTB_EN
146options 	CPU_DIRECT_MAPPED_CACHE
147options 	CPU_DISABLE_5X86_LSSER
148options 	CPU_DISABLE_CMPXCHG
149#options 	CPU_DISABLE_SSE
150options 	CPU_FASTER_5X86_FPU
151options 	CPU_I486_ON_386
152options 	CPU_IORT
153options 	CPU_L2_LATENCY=5
154options 	CPU_LOOP_EN
155options 	CPU_PPRO2CELERON
156options 	CPU_RSTK_EN
157options 	CPU_SUSP_HLT
158options 	CPU_UPGRADE_HW_CACHE
159options 	CPU_WT_ALLOC
160options 	CYRIX_CACHE_WORKS
161options 	CYRIX_CACHE_REALLY_WORKS
162#options 	NO_F00F_HACK
163
164# Debug options
165options 	NPX_DEBUG	# enable npx debugging
166
167#
168# PERFMON causes the driver for Pentium/Pentium Pro performance counters
169# to be compiled.  See perfmon(4) for more information.
170#
171options 	PERFMON
172
173
174#####################################################################
175# NETWORKING OPTIONS
176
177#
178# DEVICE_POLLING adds support for mixed interrupt-polling handling
179# of network device drivers, which has significant benefits in terms
180# of robustness to overloads and responsivity, as well as permitting
181# accurate scheduling of the CPU time between kernel network processing
182# and other activities.  The drawback is a moderate (up to 1/HZ seconds)
183# potential increase in response times.
184# It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING
185# to achieve smoother behaviour.
186# Additionally, you can enable/disable polling at runtime with help of
187# the ifconfig(8) utility, and select the CPU fraction reserved to
188# userland with the sysctl variable kern.polling.user_frac
189# (default 50, range 0..100).
190#
191# Not all device drivers support this mode of operation at the time of
192# this writing.  See polling(4) for more details.
193
194options 	DEVICE_POLLING
195
196
197#####################################################################
198# CLOCK OPTIONS
199
200# The following options are used for debugging clock behavior only, and
201# should not be used for production systems.
202
203# CLK_CALIBRATION_LOOP causes clock calibration to be run in a loop at
204# startup until the user presses a key.  (The i8254 clock is always
205# calibrated relative to the RTC (mc146818a) and this option causes the
206# calibration to be repeated.)
207options 	CLK_CALIBRATION_LOOP
208
209# CLK_USE_I8254_CALIBRATION causes the calibrated frequency of the i8254
210# clock to actually be used.
211options 	CLK_USE_I8254_CALIBRATION
212
213
214#####################################################################
215# MISCELLANEOUS DEVICES AND OPTIONS
216
217device		speaker		#Play IBM BASIC-style noises out your speaker
218hint.speaker.0.at="isa"
219hint.speaker.0.port="0x35"
220device		gzip		#Exec gzipped a.out's.  REQUIRES COMPAT_AOUT!
221device		apm_saver	# Requires APM
222
223
224#####################################################################
225# HARDWARE BUS CONFIGURATION
226
227#
228# ISA bus
229#
230device		isa
231
232#
233# Options for `isa':
234#
235# AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
236# interrupt controller.  This saves about 0.7-1.25 usec for each interrupt.
237# This option breaks suspend/resume on some portables.
238#
239# MAXMEM specifies the amount of RAM on the machine; if this is not
240# specified, FreeBSD will first read the amount of memory from the CMOS
241# RAM, so the amount of memory will initially be limited to 64MB or 16MB
242# depending on the BIOS.  If the BIOS reports 64MB, a memory probe will
243# then attempt to detect the installed amount of RAM.  If this probe
244# fails to detect >64MB RAM you will have to use the MAXMEM option.
245# The amount is in kilobytes, so for a machine with 128MB of RAM, it would
246# be 131072 (128 * 1024).
247#
248# BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
249# reset the CPU for reboot.  This is needed on some systems with broken
250# keyboard controllers.
251
252options 	AUTO_EOI_1
253
254options 	MAXMEM=(128*1024)
255#options 	BROKEN_KEYBOARD_RESET
256options 	EPSON_BOUNCEDMA
257options 	EPSON_MEMWIN
258
259#
260# PCI bus & PCI options:
261#
262device		pci
263
264#
265# AGP GART support
266device		agp
267
268
269#####################################################################
270# HARDWARE DEVICE CONFIGURATION
271
272# PC98 keyboard
273device		pckbd
274hint.pckbd.0.at="isa"
275hint.pckbd.0.port="0x041"
276hint.pckbd.0.irq="1"
277
278# These options are valid for other keyboard drivers as well.
279options 	KBD_DISABLE_KEYMAP_LOAD	# refuse to load a keymap
280options 	KBD_INSTALL_CDEV	# install a CDEV entry in /dev
281
282# GDC screen
283device		gdc
284hint.gdc.0.at="isa"
285options 	LINE30
286
287#
288# The Numeric Processing eXtension driver.  This is non-optional.
289device		npx
290
291#
292# `flags' for npx0:
293#	0x01	don't use the npx registers to optimize bcopy.
294#	0x02	don't use the npx registers to optimize bzero.
295#	0x04	don't use the npx registers to optimize copyin or copyout.
296# The npx registers are normally used to optimize copying and zeroing when
297# all of the following conditions are satisfied:
298#	I586_CPU is an option
299#	the cpu is an i586 (perhaps not a Pentium)
300#	the probe for npx0 succeeds
301#	INT 16 exception handling works.
302# Then copying and zeroing using the npx registers is normally 30-100% faster.
303# The flags can be used to control cases where it doesn't work or is slower.
304# Setting them at boot time using hints works right (the optimizations
305# are not used until later in the bootstrap when npx0 is attached).
306# Flag 0x08 automatically disables the i586 optimized routines.
307#
308
309#
310# Optional devices:
311#
312
313# 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support.  This will create
314# the /dev/3dfx0 device to work with glide implementations.  This should get
315# linked to /dev/3dfx and /dev/voodoo.  Note that this is not the same as
316# the tdfx DRI module from XFree86 and is completely unrelated.
317#
318# To enable Linuxulator support, one must also include COMPAT_LINUX in the
319# config as well.  The other option is to load both as modules.
320
321device		tdfx			# Enable 3Dfx Voodoo support
322device		tdfx_linux		# Enable Linuxulator support
323
324# Direct Rendering modules for 3D acceleration.
325device		drm		# DRM core module required by DRM drivers
326device		mach64drm	# ATI Rage Pro, Rage Mobility P/M, Rage XL
327device		mgadrm		# AGP Matrox G200, G400, G450, G550
328device		r128drm		# ATI Rage 128
329device		radeondrm	# ATI Radeon
330device		savagedrm	# S3 Savage3D, Savage4
331device		sisdrm		# SiS 300/305, 540, 630
332device		tdfxdrm		# 3dfx Voodoo 3/4/5 and Banshee
333options 	DRM_DEBUG	# Include debug printfs (slow)
334
335#
336# Bus mouse
337#
338device		mse
339hint.mse.0.at="isa"
340hint.mse.0.port="0x7fd9"
341hint.mse.0.irq="13"
342
343#
344# Network interfaces:
345#
346
347# ar:   Arnet SYNC/570i hdlc sync 2/4 port V.35/X.21 serial driver
348#       (requires sppp)
349# ce:   Cronyx Tau-PCI/32 sync single/dual port G.703/E1 serial adaptor
350#       with 32 HDLC subchannels (requires sppp (default), or NETGRAPH if
351#       NETGRAPH_CRONYX is configured)
352# cp:   Cronyx Tau-PCI sync single/dual/four port
353#       V.35/RS-232/RS-530/RS-449/X.21/G.703/E1/E3/T3/STS-1
354#       serial adaptor (requires sppp (default), or NETGRAPH if
355#       NETGRAPH_CRONYX is configured)
356# cs:   IBM Etherjet and other Crystal Semi CS89x0-based adapters and pccard
357# ed:   Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503
358#       HP PC Lan+, various PC Card devices
359#       (requires miibus)
360# ie:   AT&T StarLAN 10 and EN100; 3Com 3C507; unknown NI5210;
361#       Intel EtherExpress
362# lnc:  Lance/PCnet cards (Isolan, Novell NE2100, NE32-VL, AMD Am7990 and
363#       Am79C960)
364# oltr: Olicom ISA token-ring adapters OC-3115, OC-3117, OC-3118 and OC-3133.
365#       Olicom PCI token-ring adapters OC-3136, OC-3137, OC-3139, OC-3140,
366#       OC-3141, OC-3540 and OC-3250.
367# sbni: Granch SBNI12-xx ISA and PCI adapters
368# sr:   RISCom/N2 hdlc sync 1/2 port V.35/X.21 serial driver (requires sppp)
369
370# Order for ISA/EISA devices is important here
371
372device		ar
373device		ce
374device		cp
375device		cs
376device		ed
377hint.ed.0.at="isa"
378hint.ed.0.port="0x280"
379hint.ed.0.irq="5"
380hint.ed.0.maddr="0xd8000"
381device		ie			# Hints only required for Starlan
382hint.ie.2.at="isa"
383hint.ie.2.port="0x300"
384hint.ie.2.irq="5"
385hint.ie.2.maddr="0xd0000"
386device		lnc
387hint.lnc.0.at="isa"
388hint.lnc.0.port="0x280"
389hint.lnc.0.irq="10"
390hint.lnc.0.drq="0"
391device		sbni
392hint.sbni.0.at="isa"
393hint.sbni.0.port="0x210"
394hint.sbni.0.irq="0xefdead"
395hint.sbni.0.flags="0"
396device		snc
397hint.snc.0.at="isa"
398hint.snc.0.port="0x888"
399hint.snc.0.irq="6"
400hint.snc.0.maddr="0xc0000"
401device		sr
402device		oltr
403
404#
405# SCSI host adapters:
406#
407# ct: WD33C93[ABC] based SCSI host adapters.
408# ncv: NCR 53C500 based SCSI host adapters.
409# nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters.
410# stg: TMC 18C30, 18C50 based SCSI host adapters.
411
412device		ct
413hint.ct.0.at="isa"
414device		ncv
415device		nsp
416device		stg
417
418#
419# SafeNet crypto driver: can be moved to the MI NOTES as soon as
420# it's tested on a big-endian machine
421#
422device		safe		# SafeNet 1141
423options 	SAFE_DEBUG	# enable debugging support: hw.safe.debug
424options 	SAFE_RNDTEST	# enable rndtest support
425
426#####################################################################
427
428#
429# Miscellaneous hardware:
430#
431# apm: Laptop Advanced Power Management (experimental)
432# pmtimer: Timer device driver for power management events (APM or ACPI)
433# cy: Cyclades serial driver
434# digi: Digiboard driver
435
436# Notes on APM
437#  The flags takes the following meaning for apm0:
438#    0x0020  Statclock is broken.
439
440device		apm
441hint.apm.0.flags="0x20"
442device		canbus
443device		canbepm
444device		cy
445options 	CY_PCI_FASTINTR		# Use with cy_pci unless irq is shared
446device		digi
447# BIOS & FEP/OS components of device digi.
448device		digi_CX
449device		digi_CX_PCI
450device		digi_EPCX
451device		digi_EPCX_PCI
452device		digi_Xe
453device		digi_Xem
454device		digi_Xr
455device		olpt
456hint.olpt.0.at="isa"
457hint.olpt.0.port="0x040"
458device		pmc
459hint.pmc.0.at="isa"
460hint.pmc.0.port="0x8f0"
461device		pmtimer			# Adjust system timer at wakeup time
462
463#
464# Laptop/Notebook options:
465#
466# See also:
467#  apm under `Miscellaneous hardware'
468# above.
469
470# For older notebooks that signal a powerfail condition (external
471# power supply dropped, or battery state low) by issuing an NMI:
472
473options 	POWERFAIL_NMI	# make it beep instead of panicing
474
475#---------------------------------------------------------------------------
476# ISDN4BSD
477#
478# See /usr/share/examples/isdn/ROADMAP for an introduction to isdn4bsd.
479#
480# i4b passive ISDN cards support contains the following hardware drivers:
481#
482#	isic  - Siemens/Infineon ISDN ISAC/HSCX/IPAC chipset driver
483#	iwic  - Winbond W6692 PCI bus ISDN S/T interface controller
484#	ifpi  - AVM Fritz!Card PCI driver
485#	ifpi2  - AVM Fritz!Card PCI version 2 driver
486#	ihfc  - Cologne Chip HFC ISA/ISA-PnP chipset driver
487#	ifpnp - AVM Fritz!Card PnP driver
488#	itjc  - Siemens ISAC / TJNet Tiger300/320 chipset
489#
490# i4b active ISDN cards support contains the following hardware drivers:
491#
492#	iavc  - AVM B1 PCI, AVM B1 ISA, AVM T1
493#
494# Note that the ``options'' (if given) and ``device'' lines must BOTH
495# be uncommented to enable support for a given card !
496#
497# In addition to a hardware driver (and probably an option) the mandatory
498# ISDN protocol stack devices and the mandatory support device must be
499# enabled as well as one or more devices from the optional devices section.
500#
501#---------------------------------------------------------------------------
502#	isic driver (Siemens/Infineon chipsets)
503#
504device	isic
505#
506# PCI bus Cards:
507# --------------
508#
509# ELSA MicroLink ISDN/PCI (same as ELSA QuickStep 1000pro PCI)
510options 	ELSA_QS1PCI
511#
512#---------------------------------------------------------------------------
513#	ifpnp driver for AVM Fritz!Card PnP
514#
515# AVM Fritz!Card PnP
516device		ifpnp
517#
518#---------------------------------------------------------------------------
519#	ihfc driver for Cologne Chip ISA chipsets (experimental!)
520#
521# Teles 16.3c ISA PnP
522# AcerISDN P10 ISA PnP
523# TELEINT ISDN SPEED No.1
524device		ihfc
525#
526#---------------------------------------------------------------------------
527#	ifpi driver for AVM Fritz!Card PCI
528#
529# AVM Fritz!Card PCI
530device		ifpi
531#
532#---------------------------------------------------------------------------
533#	ifpi2 driver for AVM Fritz!Card PCI version 2
534#
535# AVM Fritz!Card PCI version 2
536device		ifpi2
537#
538#---------------------------------------------------------------------------
539#	iwic driver for Winbond W6692 chipset
540#
541# ASUSCOM P-IN100-ST-D (and other Winbond W6692 based cards)
542device		iwic
543#
544#---------------------------------------------------------------------------
545#	itjc driver for Siemens ISAC / TJNet Tiger300/320 chipset
546#
547# Traverse Technologies NETjet-S
548# Teles PCI-TJ
549device		itjc
550#
551#---------------------------------------------------------------------------
552#	iavc driver (AVM active cards, needs i4bcapi driver!)
553#
554device		iavc
555#
556#---------------------------------------------------------------------------
557#	ISDN Protocol Stack - mandatory for all hardware drivers
558#
559# Q.921 / layer 2 - i4b passive cards D channel handling
560device		i4bq921
561#
562# Q.931 / layer 3 - i4b passive cards D channel handling
563device		i4bq931
564#
565# layer 4 - i4b common passive and active card handling
566device		i4b
567#
568#---------------------------------------------------------------------------
569#	ISDN devices - mandatory for all hardware drivers
570#
571# userland driver to do ISDN tracing (for passive cards only)
572device		i4btrc
573options 	NI4BTRC=4
574#
575# userland driver to control the whole thing
576device		i4bctl
577#
578#---------------------------------------------------------------------------
579#	ISDN devices - optional
580#
581# userland driver for access to raw B channel
582device		i4brbch
583options 	NI4BRBCH=4
584#
585# userland driver for telephony
586device		i4btel
587options 	NI4BTEL=2
588#
589# network driver for IP over raw HDLC ISDN
590device		i4bipr
591options 	NI4BIPR=4
592# enable VJ header compression detection for ipr i/f
593options 	IPR_VJ
594# enable logging of the first n IP packets to isdnd (n=32 here)
595options 	IPR_LOG=32
596#
597# network driver for sync PPP over ISDN; requires an equivalent
598# number of sppp device to be configured
599device		i4bisppp
600options 	NI4BISPPP=4
601#
602# B-channel interface to the netgraph subsystem
603device		i4bing
604options 	NI4BING=2
605#
606# CAPI driver needed for active ISDN cards (see iavc driver above)
607device		i4bcapi
608#
609#---------------------------------------------------------------------------
610
611#
612# Set the number of PV entries per process.  Increasing this can
613# stop panics related to heavy use of shared memory.  However, that can
614# (combined with large amounts of physical memory) cause panics at
615# boot time due the kernel running out of VM space.
616#
617# If you're tweaking this, you might also want to increase the sysctls
618# "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
619#
620# The value below is the one more than the default.
621#
622options 	PMAP_SHPGPERPROC=201
623
624#
625# Change the size of the kernel virtual address space.  Due to
626# constraints in loader(8) on i386, this must be a multiple of 4.
627# 256 = 1 GB of kernel address space.  Increasing this also causes
628# a reduction of the address space in user processes.  512 splits
629# the 4GB cpu address space in half (2GB user, 2GB kernel).
630#
631options 	KVA_PAGES=260
632
633
634#####################################################################
635# ABI Emulation
636
637# Enable iBCS2 runtime support for SCO and ISC binaries
638options 	IBCS2
639
640# Emulate spx device for client side of SVR3 local X interface
641options 	SPX_HACK
642
643# Enable Linux ABI emulation
644options 	COMPAT_LINUX
645
646# Enable i386 a.out binary support
647options 	COMPAT_AOUT
648
649# Enable the linux-like proc filesystem support (requires COMPAT_LINUX
650# and PSEUDOFS)
651options 	LINPROCFS
652
653#
654# SysVR4 ABI emulation
655#
656# The svr4 ABI emulator can be statically compiled into the kernel or loaded as
657# a KLD module.
658# The STREAMS network emulation code can also be compiled statically or as a
659# module.  If loaded as a module, it must be loaded before the svr4 module
660# (the /usr/sbin/svr4 script does this for you).  If compiling statically,
661# the `streams' device must be configured into any kernel which also
662# specifies COMPAT_SVR4.  It is possible to have a statically-configured
663# STREAMS device and a dynamically loadable svr4 emulator;  the /usr/sbin/svr4
664# script understands that it doesn't need to load the `streams' module under
665# those circumstances.
666# Caveat:  At this time, `options KTRACE' is required for the svr4 emulator
667# (whether static or dynamic).
668#
669options 	COMPAT_SVR4	# build emulator statically
670options 	DEBUG_SVR4	# enable verbose debugging
671device		streams		# STREAMS network driver (required for svr4).
672
673
674#####################################################################
675# VM OPTIONS
676
677# Disable the 4 MByte page PSE CPU feature.  The PSE feature allows the
678# kernel to use 4 MByte pages to map the kernel instead of 4k pages.
679# This saves on the amount of memory needed for page tables needed to
680# map the kernel.  You should only disable this feature as a temporary
681# workaround if you are having problems with it enabled.
682#
683#options 	DISABLE_PSE
684
685# Disable the global pages PGE CPU feature.  The PGE feature allows pages
686# to be marked with the PG_G bit.  TLB entries for these pages are not
687# flushed from the cache when %cr3 is reloaded.  This can make context
688# switches less expensive.  You should only disable this feature as a
689# temporary workaround if you are having problems with it enabled.
690#
691#options 	DISABLE_PG_G
692
693# KSTACK_PAGES is the number of memory pages to assign to the kernel
694# stack of each thread.
695
696options 	KSTACK_PAGES=3
697
698#####################################################################
699
700# More undocumented options for linting.
701# Note that documenting these are not considered an affront.
702
703options 	FB_INSTALL_CDEV		# install a CDEV entry in /dev
704
705# PECOFF module (Win32 Execution Format)
706options 	PECOFF_SUPPORT
707options 	PECOFF_DEBUG
708
709options 	I4B_SMP_WORKAROUND
710options 	I586_PMC_GUPROF=0x70000
711options 	KBDIO_DEBUG=2
712options 	KBD_MAXRETRY=4
713options 	KBD_MAXWAIT=6
714options 	KBD_RESETDELAY=201
715
716options 	TIMER_FREQ=((14318182+6)/12)
717
718options 	VM_KMEM_SIZE
719options 	VM_KMEM_SIZE_MAX
720options 	VM_KMEM_SIZE_SCALE
721
722
723# The I/O device
724device		io
725
726
727#####################################################################
728# Devices we don't want to deal with
729
730nodevice	atkbdc
731nodevice	atkbd
732nodevice	psm
733nodevice	vga
734nodevice	bt
735nodevice	adw
736nodevice	aha
737nodevice	ahb
738nodevice	ahd
739nodevice	mpt
740nodevice	trm
741nodevice	wds
742nodevice	dpt
743nodevice	ciss
744nodevice	iir
745nodevice	mly
746nodevice	ida		# Compaq Smart RAID
747nodevice	mlx		# Mylex DAC960
748nodevice	amr		# AMI MegaRAID
749nodevice	twe		# 3ware ATA RAID
750nodevice	ataraid
751nodevice	cm
752nodevice	ex
753nodevice	fea
754nodevice	intpm
755nodevice	alpm
756nodevice	ichsmb
757nodevice	viapm
758nodevice	amdpm
759nodevice	amdsmb
760nodevice	nfpm
761nodevice	nfsmb
762
763
764#####################################################################
765# Options we don't want to deal with
766
767nooption	VGA_DEBUG
768nooption	VGA_WIDTH90
769nooption	VGA_SLOW_IOACCESS
770nooption	VGA_ALT_SEQACCESS
771nooption	PSM_RESETAFTERSUSPEND
772nooption	PSM_HOOKRESUME
773nooption	ATKBD_DFLT_KEYMAP
774nooption	AHD_DEBUG
775nooption	AHD_DEBUG_OPTS
776nooption	AHD_REG_PRETTY_PRINT
777nooption	ADW_ALLOW_MEMIO
778nooption	DPT_LOST_IRQ
779nooption	DPT_RESET_HBA
780nooption	DPT_TIMEOUT_FACTOR
781nooption	AAC_DEBUG
782nooption	ACPI_MAX_THREADS
783
784
785#####################################################################
786# Make options we don't want to deal with
787
788nomakeoption	ATKBD_DFLT_KEYMAP
789