NOTES revision 144512
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 144512 2005-04-01 22:59:25Z imp $ 8# 9 10# 11# This directive is mandatory; it defines the architecture to be 12# configured for; in this case, the 386 family based PC-98 and 13# compatibles. 14# 15machine pc98 i386 16options PC98 17 18# 19# We want LINT to cover profiling as well. 20profile 2 21 22 23##################################################################### 24# SMP OPTIONS: 25# 26# The apic device enables the use of the I/O APIC for interrupt delivery. 27# The apic device can be used in both UP and SMP kernels, but is required 28# for SMP kernels. Thus, the apic device is not strictly an SMP option, 29# but it is a prerequisite for SMP. 30# 31# Notes: 32# 33# By default, mixed mode is used to route IRQ0 from the AT timer via 34# the 8259A master PIC through the ExtINT pin on the first I/O APIC. 35# This can be disabled via the NO_MIXED_MODE option. In that case, 36# IRQ0 will be routed via an intpin on the first I/O APIC. Not all 37# motherboards hook IRQ0 up to the first I/O APIC even though their 38# MP table or MADT may claim to do so. That is why mixed mode is 39# enabled by default. 40# 41 42# Mandatory: 43device apic # I/O apic 44 45# Optional: 46options NO_MIXED_MODE # Disable use of mixed mode 47 48# 49# Watchdog routines. 50# 51options MP_WATCHDOG 52 53 54##################################################################### 55# CPU OPTIONS 56 57# 58# You must specify at least one CPU (the one you intend to run on); 59# deleting the specification for CPUs you don't need to use may make 60# parts of the system run faster. 61# 62cpu I486_CPU 63cpu I586_CPU # aka Pentium(tm) 64cpu I686_CPU # aka Pentium Pro(tm) 65 66# 67# Options for CPU features. 68# 69# CPU_BLUELIGHTNING_3X enables triple-clock mode on IBM Blue Lightning 70# CPU if CPU supports it. The default is double-clock mode on 71# BlueLightning CPU box. 72# 73# CPU_BLUELIGHTNING_FPU_OP_CACHE enables FPU operand cache on IBM 74# BlueLightning CPU. It works only with Cyrix FPU, and this option 75# should not be used with Intel FPU. 76# 77# CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1). 78# 79# CPU_CYRIX_NO_LOCK enables weak locking for the entire address space 80# of Cyrix 6x86 and 6x86MX CPUs by setting the NO_LOCK bit of CCR1. 81# Otherwise, the NO_LOCK bit of CCR1 is cleared. (NOTE 3) 82# 83# CPU_DIRECT_MAPPED_CACHE sets L1 cache of Cyrix 486DLC CPU in direct 84# mapped mode. Default is 2-way set associative mode. 85# 86# CPU_DISABLE_5X86_LSSER disables load store serialize (i.e., enables 87# reorder). This option should not be used if you use memory mapped 88# I/O device(s). 89# 90# CPU_DISABLE_CMPXCHG disables the CMPXCHG instruction on > i386 IA32 91# machines. VmWare 3.x seems to emulate this instruction poorly, causing 92# the guest OS to run very slowly. This problem appears to be fixed in 93# VmWare 4.x, at least in version 4.5.2, so that enabling this option with 94# VmWare 4.x will result in locking operations to be 20-30 times slower. 95# Enabling this with an SMP kernel will cause the kernel to be unusable. 96# 97# CPU_DISABLE_SSE explicitly prevents I686_CPU from turning on SSE. 98# 99# CPU_ENABLE_SSE enables SSE/MMX2 instructions support. This is default 100# on I686_CPU and above. 101# 102# CPU_FASTER_5X86_FPU enables faster FPU exception handler. 103# 104# CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products 105# for i386 machines. 106# 107# CPU_IORT defines I/O clock delay time (NOTE 1). Default values of 108# I/O clock delay time on Cyrix 5x86 and 6x86 are 0 and 7,respectively 109# (no clock delay). 110# 111# CPU_L2_LATENCY specifies the L2 cache latency value. This option is used 112# only when CPU_PPRO2CELERON is defined and Mendocino Celeron is detected. 113# The default value is 5. 114# 115# CPU_LOOP_EN prevents flushing the prefetch buffer if the destination 116# of a jump is already present in the prefetch buffer on Cyrix 5x86(NOTE 117# 1). 118# 119# CPU_PPRO2CELERON enables L2 cache of Mendocino Celeron CPUs. This option 120# is useful when you use Socket 8 to Socket 370 converter, because most Pentium 121# Pro BIOSs do not enable L2 cache of Mendocino Celeron CPUs. 122# 123# CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1). 124# 125# CPU_SUSP_HLT enables suspend on HALT. If this option is set, CPU 126# enters suspend mode following execution of HALT instruction. 127# 128# CPU_UPGRADE_HW_CACHE eliminates unneeded cache flush instruction(s). 129# 130# CPU_WT_ALLOC enables write allocation on Cyrix 6x86/6x86MX and AMD 131# K5/K6/K6-2 CPUs. 132# 133# CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache 134# flush at hold state. 135# 136# CYRIX_CACHE_REALLY_WORKS enables (1) CPU cache on Cyrix 486 CPUs 137# without cache flush at hold state, and (2) write-back CPU cache on 138# Cyrix 6x86 whose revision < 2.7 (NOTE 2). 139# 140# NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY 141# Pentiums) from locking up when a LOCK CMPXCHG8B instruction is 142# executed. This option is only needed if I586_CPU is also defined, 143# and should be included for any non-Pentium CPU that defines it. 144# 145# NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors 146# which indicates that the 15-16MB range is *definitely* not being 147# occupied by an ISA memory hole. 148# 149# NOTE 1: The options, CPU_BTB_EN, CPU_LOOP_EN, CPU_IORT, 150# CPU_LOOP_EN and CPU_RSTK_EN should not be used because of CPU bugs. 151# These options may crash your system. 152# 153# NOTE 2: If CYRIX_CACHE_REALLY_WORKS is not set, CPU cache is enabled 154# in write-through mode when revision < 2.7. If revision of Cyrix 155# 6x86 >= 2.7, CPU cache is always enabled in write-back mode. 156# 157# NOTE 3: This option may cause failures for software that requires 158# locked cycles in order to operate correctly. 159# 160options CPU_BLUELIGHTNING_3X 161options CPU_BLUELIGHTNING_FPU_OP_CACHE 162options CPU_BTB_EN 163options CPU_DIRECT_MAPPED_CACHE 164options CPU_DISABLE_5X86_LSSER 165options CPU_DISABLE_CMPXCHG 166#options CPU_DISABLE_SSE 167options CPU_ENABLE_SSE 168options CPU_FASTER_5X86_FPU 169options CPU_I486_ON_386 170options CPU_IORT 171options CPU_L2_LATENCY=5 172options CPU_LOOP_EN 173options CPU_PPRO2CELERON 174options CPU_RSTK_EN 175options CPU_SUSP_HLT 176options CPU_UPGRADE_HW_CACHE 177options CPU_WT_ALLOC 178options CYRIX_CACHE_WORKS 179options CYRIX_CACHE_REALLY_WORKS 180#options NO_F00F_HACK 181 182# Debug options 183options NPX_DEBUG # enable npx debugging 184 185# 186# PERFMON causes the driver for Pentium/Pentium Pro performance counters 187# to be compiled. See perfmon(4) for more information. 188# 189options PERFMON 190 191 192##################################################################### 193# NETWORKING OPTIONS 194 195# 196# DEVICE_POLLING adds support for mixed interrupt-polling handling 197# of network device drivers, which has significant benefits in terms 198# of robustness to overloads and responsivity, as well as permitting 199# accurate scheduling of the CPU time between kernel network processing 200# and other activities. The drawback is a moderate (up to 1/HZ seconds) 201# potential increase in response times. 202# It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING 203# to achieve smoother behaviour. 204# Additionally, you can enable/disable polling at runtime with the 205# sysctl variable kern.polling.enable (defaults off), and select 206# the CPU fraction reserved to userland with the sysctl variable 207# kern.polling.user_frac (default 50, range 0..100). 208# 209# Not all device drivers support this mode of operation at the time of 210# this writing. See polling(4) for more details. 211 212options DEVICE_POLLING 213 214 215##################################################################### 216# CLOCK OPTIONS 217 218# The following options are used for debugging clock behavior only, and 219# should not be used for production systems. 220 221# CLK_CALIBRATION_LOOP causes clock calibration to be run in a loop at 222# startup until the user presses a key. (The i8254 clock is always 223# calibrated relative to the RTC (mc146818a) and this option causes the 224# calibration to be repeated.) 225options CLK_CALIBRATION_LOOP 226 227# CLK_USE_I8254_CALIBRATION causes the calibrated frequency of the i8254 228# clock to actually be used. 229options CLK_USE_I8254_CALIBRATION 230 231 232##################################################################### 233# MISCELLANEOUS DEVICES AND OPTIONS 234 235device speaker #Play IBM BASIC-style noises out your speaker 236hint.speaker.0.at="isa" 237hint.speaker.0.port="0x35" 238device gzip #Exec gzipped a.out's. REQUIRES COMPAT_AOUT! 239device apm_saver # Requires APM 240 241 242##################################################################### 243# HARDWARE BUS CONFIGURATION 244 245# 246# ISA bus 247# 248device isa 249 250# 251# Options for `isa': 252# 253# AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A 254# interrupt controller. This saves about 0.7-1.25 usec for each interrupt. 255# This option breaks suspend/resume on some portables. 256# 257# MAXMEM specifies the amount of RAM on the machine; if this is not 258# specified, FreeBSD will first read the amount of memory from the CMOS 259# RAM, so the amount of memory will initially be limited to 64MB or 16MB 260# depending on the BIOS. If the BIOS reports 64MB, a memory probe will 261# then attempt to detect the installed amount of RAM. If this probe 262# fails to detect >64MB RAM you will have to use the MAXMEM option. 263# The amount is in kilobytes, so for a machine with 128MB of RAM, it would 264# be 131072 (128 * 1024). 265# 266# BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to 267# reset the CPU for reboot. This is needed on some systems with broken 268# keyboard controllers. 269 270options AUTO_EOI_1 271 272options MAXMEM=(128*1024) 273#options BROKEN_KEYBOARD_RESET 274options EPSON_BOUNCEDMA 275options EPSON_MEMWIN 276 277# 278# PCI bus & PCI options: 279# 280device pci 281 282# 283# AGP GART support 284device agp 285 286 287##################################################################### 288# HARDWARE DEVICE CONFIGURATION 289 290# PC98 keyboard 291device pckbd 292hint.pckbd.0.at="isa" 293hint.pckbd.0.port="0x041" 294hint.pckbd.0.irq="1" 295 296# These options are valid for other keyboard drivers as well. 297options KBD_DISABLE_KEYMAP_LOAD # refuse to load a keymap 298options KBD_INSTALL_CDEV # install a CDEV entry in /dev 299 300# GDC screen 301device gdc 302hint.gdc.0.at="isa" 303options LINE30 304 305# 306# The Numeric Processing eXtension driver. This is non-optional. 307device npx 308 309# 310# `flags' for npx0: 311# 0x01 don't use the npx registers to optimize bcopy. 312# 0x02 don't use the npx registers to optimize bzero. 313# 0x04 don't use the npx registers to optimize copyin or copyout. 314# The npx registers are normally used to optimize copying and zeroing when 315# all of the following conditions are satisfied: 316# I586_CPU is an option 317# the cpu is an i586 (perhaps not a Pentium) 318# the probe for npx0 succeeds 319# INT 16 exception handling works. 320# Then copying and zeroing using the npx registers is normally 30-100% faster. 321# The flags can be used to control cases where it doesn't work or is slower. 322# Setting them at boot time using hints works right (the optimizations 323# are not used until later in the bootstrap when npx0 is attached). 324# Flag 0x08 automatically disables the i586 optimized routines. 325# 326 327# 328# Optional devices: 329# 330 331# 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support. This will create 332# the /dev/3dfx0 device to work with glide implementations. This should get 333# linked to /dev/3dfx and /dev/voodoo. Note that this is not the same as 334# the tdfx DRI module from XFree86 and is completely unrelated. 335# 336# To enable Linuxulator support, one must also include COMPAT_LINUX in the 337# config as well, or you will not have the dependencies. The other option 338# is to load both as modules. 339 340device tdfx # Enable 3Dfx Voodoo support 341options TDFX_LINUX # Enable Linuxulator support 342 343# DRM options: 344# mgadrm: AGP Matrox G200, G400, G450, G550 345# r128drm: ATI Rage 128 346# radeondrm: ATI Radeon up to 9000/9100 347# sisdrm: SiS 300/305,540,630 348# tdfxdrm: 3dfx Voodoo 3/4/5 and Banshee 349# DRM_DEBUG: include debug printfs, very slow 350# 351# mga requires AGP in the kernel, and it is recommended 352# for AGP r128 and radeon cards. 353 354device mgadrm 355device r128drm 356device radeondrm 357device sisdrm 358device tdfxdrm 359 360options DRM_DEBUG 361 362# 363# Bus mouse 364# 365device mse 366hint.mse.0.at="isa" 367hint.mse.0.port="0x7fd9" 368hint.mse.0.irq="13" 369 370# 371# Network interfaces: 372# 373 374# ar: Arnet SYNC/570i hdlc sync 2/4 port V.35/X.21 serial driver 375# (requires sppp) 376# cp: Cronyx Tau-PCI sync single/dual/four port 377# V.35/RS-232/RS-530/RS-449/X.21/G.703/E1/E3/T3/STS-1 378# serial adaptor (requires sppp (default), or NETGRAPH if 379# NETGRAPH_CRONYX is configured) 380# ed: Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503 381# HP PC Lan+, various PC Card devices (refer to etc/defaults/pccard.conf) 382# (requires miibus) 383# ie: AT&T StarLAN 10 and EN100; 3Com 3C507; unknown NI5210; 384# Intel EtherExpress 385# lnc: Lance/PCnet cards (Isolan, Novell NE2100, NE32-VL, AMD Am7990 and 386# Am79C960) 387# oltr: Olicom ISA token-ring adapters OC-3115, OC-3117, OC-3118 and OC-3133. 388# Olicom PCI token-ring adapters OC-3136, OC-3137, OC-3139, OC-3140, 389# OC-3141, OC-3540 and OC-3250. 390# sbni: Granch SBNI12-xx ISA and PCI adapters 391# sr: RISCom/N2 hdlc sync 1/2 port V.35/X.21 serial driver (requires sppp) 392# wl: Lucent Wavelan (ISA card only). 393 394# Order for ISA/EISA devices is important here 395 396device ar 397device cp 398device ed 399#options ED_NO_MIIBUS # Disable ed miibus support 400hint.ed.0.at="isa" 401hint.ed.0.port="0x280" 402hint.ed.0.irq="5" 403hint.ed.0.maddr="0xd8000" 404device ie # Hints only required for Starlan 405hint.ie.2.at="isa" 406hint.ie.2.port="0x300" 407hint.ie.2.irq="5" 408hint.ie.2.maddr="0xd0000" 409device lnc 410hint.lnc.0.at="isa" 411hint.lnc.0.port="0x280" 412hint.lnc.0.irq="10" 413hint.lnc.0.drq="0" 414device sbni 415hint.sbni.0.at="isa" 416hint.sbni.0.port="0x210" 417hint.sbni.0.irq="0xefdead" 418hint.sbni.0.flags="0" 419device snc 420hint.snc.0.at="isa" 421hint.snc.0.port="0x888" 422hint.snc.0.irq="6" 423hint.snc.0.maddr="0xc0000" 424device sr 425device oltr 426device wl 427hint.wl.0.at="isa" 428hint.wl.0.port="0x300" 429options WLCACHE # enables the signal-strength cache 430options WLDEBUG # enables verbose debugging output 431 432# 433# SCSI host adapters: 434# 435# ct: WD33C93[ABC] based SCSI host adapters. 436# ncv: NCR 53C500 based SCSI host adapters. 437# nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters. 438# stg: TMC 18C30, 18C50 based SCSI host adapters. 439 440device ct 441hint.ct.0.at="isa" 442device ncv 443device nsp 444device stg 445 446# 447# SafeNet crypto driver: can be moved to the MI NOTES as soon as 448# it's tested on a big-endian machine 449# 450device safe # SafeNet 1141 451options SAFE_DEBUG # enable debugging support: hw.safe.debug 452options SAFE_RNDTEST # enable rndtest support 453 454##################################################################### 455 456# 457# Miscellaneous hardware: 458# 459# apm: Laptop Advanced Power Management (experimental) 460# pmtimer: Timer device driver for power management events (APM or ACPI) 461# cy: Cyclades serial driver 462# digi: Digiboard driver 463 464# Notes on APM 465# The flags takes the following meaning for apm0: 466# 0x0020 Statclock is broken. 467 468device apm 469hint.apm.0.flags="0x20" 470device canbus 471device canbepm 472device cy 473options CY_PCI_FASTINTR # Use with cy_pci unless irq is shared 474device digi 475# BIOS & FEP/OS components of device digi. 476device digi_CX 477device digi_CX_PCI 478device digi_EPCX 479device digi_EPCX_PCI 480device digi_Xe 481device digi_Xem 482device digi_Xr 483device olpt 484hint.olpt.0.at="isa" 485hint.olpt.0.port="0x040" 486device pmc 487hint.pmc.0.at="isa" 488hint.pmc.0.port="0x8f0" 489device pmtimer # Adjust system timer at wakeup time 490# sx device is i386 and pc98 only at the moment. 491device sx 492options SX_DEBUG 493 494# 495# Laptop/Notebook options: 496# 497# See also: 498# apm under `Miscellaneous hardware' 499# above. 500 501# For older notebooks that signal a powerfail condition (external 502# power supply dropped, or battery state low) by issuing an NMI: 503 504options POWERFAIL_NMI # make it beep instead of panicing 505 506# 507# PC Card/PCMCIA 508# (OLDCARD) 509# 510# card: pccard slots 511# pcic: isa/pccard bridge 512device pcic 513hint.pcic.0.at="isa" 514#hint.pcic.1.at="isa" 515device card 516 517#--------------------------------------------------------------------------- 518# ISDN4BSD 519# 520# See /usr/share/examples/isdn/ROADMAP for an introduction to isdn4bsd. 521# 522# i4b passive ISDN cards support contains the following hardware drivers: 523# 524# isic - Siemens/Infineon ISDN ISAC/HSCX/IPAC chipset driver 525# iwic - Winbond W6692 PCI bus ISDN S/T interface controller 526# ifpi - AVM Fritz!Card PCI driver 527# ifpi2 - AVM Fritz!Card PCI version 2 driver 528# ihfc - Cologne Chip HFC ISA/ISA-PnP chipset driver 529# ifpnp - AVM Fritz!Card PnP driver 530# itjc - Siemens ISAC / TJNet Tiger300/320 chipset 531# 532# i4b active ISDN cards support contains the following hardware drivers: 533# 534# iavc - AVM B1 PCI, AVM B1 ISA, AVM T1 535# 536# Note that the ``options'' (if given) and ``device'' lines must BOTH 537# be uncommented to enable support for a given card ! 538# 539# In addition to a hardware driver (and probably an option) the mandatory 540# ISDN protocol stack devices and the mandatory support device must be 541# enabled as well as one or more devices from the optional devices section. 542# 543#--------------------------------------------------------------------------- 544# isic driver (Siemens/Infineon chipsets) 545# 546device isic 547# 548# PCI bus Cards: 549# -------------- 550# 551# ELSA MicroLink ISDN/PCI (same as ELSA QuickStep 1000pro PCI) 552options ELSA_QS1PCI 553# 554#--------------------------------------------------------------------------- 555# ifpnp driver for AVM Fritz!Card PnP 556# 557# AVM Fritz!Card PnP 558device ifpnp 559# 560#--------------------------------------------------------------------------- 561# ihfc driver for Cologne Chip ISA chipsets (experimental!) 562# 563# Teles 16.3c ISA PnP 564# AcerISDN P10 ISA PnP 565# TELEINT ISDN SPEED No.1 566device ihfc 567# 568#--------------------------------------------------------------------------- 569# ifpi driver for AVM Fritz!Card PCI 570# 571# AVM Fritz!Card PCI 572device ifpi 573# 574#--------------------------------------------------------------------------- 575# ifpi2 driver for AVM Fritz!Card PCI version 2 576# 577# AVM Fritz!Card PCI version 2 578device ifpi2 579# 580#--------------------------------------------------------------------------- 581# iwic driver for Winbond W6692 chipset 582# 583# ASUSCOM P-IN100-ST-D (and other Winbond W6692 based cards) 584device iwic 585# 586#--------------------------------------------------------------------------- 587# itjc driver for Siemens ISAC / TJNet Tiger300/320 chipset 588# 589# Traverse Technologies NETjet-S 590# Teles PCI-TJ 591device itjc 592# 593#--------------------------------------------------------------------------- 594# iavc driver (AVM active cards, needs i4bcapi driver!) 595# 596device iavc 597# 598#--------------------------------------------------------------------------- 599# ISDN Protocol Stack - mandatory for all hardware drivers 600# 601# Q.921 / layer 2 - i4b passive cards D channel handling 602device i4bq921 603# 604# Q.931 / layer 3 - i4b passive cards D channel handling 605device i4bq931 606# 607# layer 4 - i4b common passive and active card handling 608device i4b 609# 610#--------------------------------------------------------------------------- 611# ISDN devices - mandatory for all hardware drivers 612# 613# userland driver to do ISDN tracing (for passive cards only) 614device i4btrc 615options NI4BTRC=4 616# 617# userland driver to control the whole thing 618device i4bctl 619# 620#--------------------------------------------------------------------------- 621# ISDN devices - optional 622# 623# userland driver for access to raw B channel 624device i4brbch 625options NI4BRBCH=4 626# 627# userland driver for telephony 628device i4btel 629options NI4BTEL=2 630# 631# network driver for IP over raw HDLC ISDN 632device i4bipr 633options NI4BIPR=4 634# enable VJ header compression detection for ipr i/f 635options IPR_VJ 636# enable logging of the first n IP packets to isdnd (n=32 here) 637options IPR_LOG=32 638# 639# network driver for sync PPP over ISDN; requires an equivalent 640# number of sppp device to be configured 641device i4bisppp 642options NI4BISPPP=4 643# 644# B-channel interface to the netgraph subsystem 645device i4bing 646options NI4BING=2 647# 648# CAPI driver needed for active ISDN cards (see iavc driver above) 649device i4bcapi 650# 651#--------------------------------------------------------------------------- 652 653# 654# Set the number of PV entries per process. Increasing this can 655# stop panics related to heavy use of shared memory. However, that can 656# (combined with large amounts of physical memory) cause panics at 657# boot time due the kernel running out of VM space. 658# 659# If you're tweaking this, you might also want to increase the sysctls 660# "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target". 661# 662# The value below is the one more than the default. 663# 664options PMAP_SHPGPERPROC=201 665 666# 667# Change the size of the kernel virtual address space. Due to 668# constraints in loader(8) on i386, this must be a multiple of 4. 669# 256 = 1 GB of kernel address space. Increasing this also causes 670# a reduction of the address space in user processes. 512 splits 671# the 4GB cpu address space in half (2GB user, 2GB kernel). 672# 673options KVA_PAGES=260 674 675 676##################################################################### 677# ABI Emulation 678 679# Enable iBCS2 runtime support for SCO and ISC binaries 680options IBCS2 681 682# Emulate spx device for client side of SVR3 local X interface 683options SPX_HACK 684 685# Enable Linux ABI emulation 686options COMPAT_LINUX 687 688# Enable i386 a.out binary support 689options COMPAT_AOUT 690 691# Enable the linux-like proc filesystem support (requires COMPAT_LINUX 692# and PSEUDOFS) 693options LINPROCFS 694 695# 696# SysVR4 ABI emulation 697# 698# The svr4 ABI emulator can be statically compiled into the kernel or loaded as 699# a KLD module. 700# The STREAMS network emulation code can also be compiled statically or as a 701# module. If loaded as a module, it must be loaded before the svr4 module 702# (the /usr/sbin/svr4 script does this for you). If compiling statically, 703# the `streams' device must be configured into any kernel which also 704# specifies COMPAT_SVR4. It is possible to have a statically-configured 705# STREAMS device and a dynamically loadable svr4 emulator; the /usr/sbin/svr4 706# script understands that it doesn't need to load the `streams' module under 707# those circumstances. 708# Caveat: At this time, `options KTRACE' is required for the svr4 emulator 709# (whether static or dynamic). 710# 711options COMPAT_SVR4 # build emulator statically 712options DEBUG_SVR4 # enable verbose debugging 713device streams # STREAMS network driver (required for svr4). 714 715 716##################################################################### 717# VM OPTIONS 718 719# Disable the 4 MByte page PSE CPU feature. The PSE feature allows the 720# kernel to use 4 MByte pages to map the kernel instead of 4k pages. 721# This saves on the amount of memory needed for page tables needed to 722# map the kernel. You should only disable this feature as a temporary 723# workaround if you are having problems with it enabled. 724# 725#options DISABLE_PSE 726 727# Disable the global pages PGE CPU feature. The PGE feature allows pages 728# to be marked with the PG_G bit. TLB entries for these pages are not 729# flushed from the cache when %cr3 is reloaded. This can make context 730# switches less expensive. You should only disable this feature as a 731# temporary workaround if you are having problems with it enabled. 732# 733#options DISABLE_PG_G 734 735# KSTACK_PAGES is the number of memory pages to assign to the kernel 736# stack of each thread. 737 738options KSTACK_PAGES=3 739 740##################################################################### 741 742# More undocumented options for linting. 743# Note that documenting these are not considered an affront. 744 745options FB_INSTALL_CDEV # install a CDEV entry in /dev 746 747# PECOFF module (Win32 Execution Format) 748options PECOFF_SUPPORT 749options PECOFF_DEBUG 750 751options I4B_SMP_WORKAROUND 752options I586_PMC_GUPROF=0x70000 753options KBDIO_DEBUG=2 754options KBD_MAXRETRY=4 755options KBD_MAXWAIT=6 756options KBD_RESETDELAY=201 757 758options TIMER_FREQ=((14318182+6)/12) 759 760options VM_KMEM_SIZE 761options VM_KMEM_SIZE_MAX 762options VM_KMEM_SIZE_SCALE 763 764 765# The I/O device 766device io 767 768 769##################################################################### 770# Devices we don't want to deal with 771 772nodevice atkbdc 773nodevice atkbd 774nodevice psm 775nodevice vga 776nodevice bt 777nodevice adw 778nodevice aha 779nodevice ahb 780nodevice ahd 781nodevice mpt 782nodevice trm 783nodevice wds 784nodevice asr 785nodevice dpt 786nodevice ciss 787nodevice iir 788nodevice mly 789nodevice ida # Compaq Smart RAID 790nodevice mlx # Mylex DAC960 791nodevice amr # AMI MegaRAID 792nodevice twe # 3ware ATA RAID 793nodevice ataraid 794nodevice cm 795nodevice cs 796nodevice ex 797nodevice fea 798nodevice cbb 799nodevice pccard 800nodevice cardbus 801nodevice intpm 802nodevice alpm 803nodevice ichsmb 804nodevice viapm 805nodevice amdpm 806nodevice nfpm 807 808 809##################################################################### 810# Options we don't want to deal with 811 812nooption VGA_DEBUG 813nooption VGA_WIDTH90 814nooption VGA_SLOW_IOACCESS 815nooption VGA_ALT_SEQACCESS 816nooption PSM_RESETAFTERSUSPEND 817nooption PSM_HOOKRESUME 818nooption ATKBD_DFLT_KEYMAP 819nooption AHD_DEBUG 820nooption AHD_DEBUG_OPTS 821nooption AHD_REG_PRETTY_PRINT 822nooption ADW_ALLOW_MEMIO 823nooption DPT_LOST_IRQ 824nooption DPT_RESET_HBA 825nooption DPT_TIMEOUT_FACTOR 826nooption AAC_DEBUG 827nooption ACPI_MAX_THREADS 828 829 830##################################################################### 831# Make options we don't want to deal with 832 833nomakeoption ATKBD_DFLT_KEYMAP 834