NOTES revision 163535
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 163535 2006-10-20 09:52:27Z des $ 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 216 217# 218# sio: serial ports (see sio(4)), including support for various 219# PC Card devices, such as Modem and NICs 220# 221device sio 222hint.sio.0.at="isa" 223hint.sio.0.port="0x3F8" 224hint.sio.0.flags="0x10" 225hint.sio.0.irq="4" 226 227# `flags' specific to sio(4). 228# 0x10 enable console support for this unit. Other console flags 229# (if applicable) are ignored unless this is set. Enabling 230# console support does not make the unit the preferred console. 231# Boot with -h or set boot_serial=YES in the loader. For sio(4) 232# specifically, the 0x20 flag can also be set (see above). 233# Currently, at most one unit can have console support; the 234# first one (in config file order) with this flag set is 235# preferred. Setting this flag for sio0 gives the old behaviour. 236# 0x20 force this unit to be the console (unless there is another 237# higher priority console). This replaces the COMCONSOLE option. 238# 0x40 reserve this unit for low level console operations. Do not 239# access the device in any normal way. 240# 0x80 use this port for serial line gdb support in ddb. Also known 241# as debug port. 242# PnP `flags' 243# 0x1 disable probing of this device. Used to prevent your modem 244# from being attached as a PnP modem. 245# Other flags for sio that aren't documented in the man page. 246# 0x20000 enable hardware RTS/CTS and larger FIFOs. Only works for 247# ST16650A-compatible UARTs. 248 249# Options for sio: 250options COM_ESP # Code for Hayes ESP. 251options COM_MULTIPORT # Code for some cards with shared IRQs. 252options CONSPEED=115200 # Speed for serial console 253 # (default 9600). 254 255device speaker #Play IBM BASIC-style noises out your speaker 256hint.speaker.0.at="isa" 257hint.speaker.0.port="0x35" 258device gzip #Exec gzipped a.out's. REQUIRES COMPAT_AOUT! 259device apm_saver # Requires APM 260 261 262##################################################################### 263# HARDWARE BUS CONFIGURATION 264 265# 266# ISA bus 267# 268device isa 269 270# 271# Options for `isa': 272# 273# AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A 274# interrupt controller. This saves about 0.7-1.25 usec for each interrupt. 275# This option breaks suspend/resume on some portables. 276# 277# MAXMEM specifies the amount of RAM on the machine; if this is not 278# specified, FreeBSD will first read the amount of memory from the CMOS 279# RAM, so the amount of memory will initially be limited to 64MB or 16MB 280# depending on the BIOS. If the BIOS reports 64MB, a memory probe will 281# then attempt to detect the installed amount of RAM. If this probe 282# fails to detect >64MB RAM you will have to use the MAXMEM option. 283# The amount is in kilobytes, so for a machine with 128MB of RAM, it would 284# be 131072 (128 * 1024). 285# 286# BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to 287# reset the CPU for reboot. This is needed on some systems with broken 288# keyboard controllers. 289 290options AUTO_EOI_1 291 292options MAXMEM=(128*1024) 293#options BROKEN_KEYBOARD_RESET 294options EPSON_BOUNCEDMA 295options EPSON_MEMWIN 296 297# 298# PCI bus & PCI options: 299# 300device pci 301 302# 303# AGP GART support 304device agp 305 306 307##################################################################### 308# HARDWARE DEVICE CONFIGURATION 309 310# PC98 keyboard 311device pckbd 312hint.pckbd.0.at="isa" 313hint.pckbd.0.port="0x041" 314hint.pckbd.0.irq="1" 315 316# These options are valid for other keyboard drivers as well. 317options KBD_DISABLE_KEYMAP_LOAD # refuse to load a keymap 318options KBD_INSTALL_CDEV # install a CDEV entry in /dev 319 320# GDC screen 321device gdc 322hint.gdc.0.at="isa" 323options LINE30 324 325# 326# The Numeric Processing eXtension driver. This is non-optional. 327device npx 328 329# 330# `flags' for npx0: 331# 0x01 don't use the npx registers to optimize bcopy. 332# 0x02 don't use the npx registers to optimize bzero. 333# 0x04 don't use the npx registers to optimize copyin or copyout. 334# The npx registers are normally used to optimize copying and zeroing when 335# all of the following conditions are satisfied: 336# I586_CPU is an option 337# the cpu is an i586 (perhaps not a Pentium) 338# the probe for npx0 succeeds 339# INT 16 exception handling works. 340# Then copying and zeroing using the npx registers is normally 30-100% faster. 341# The flags can be used to control cases where it doesn't work or is slower. 342# Setting them at boot time using hints works right (the optimizations 343# are not used until later in the bootstrap when npx0 is attached). 344# Flag 0x08 automatically disables the i586 optimized routines. 345# 346 347# 348# Optional devices: 349# 350 351device splash # Splash screen and screen saver support 352 353# 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support. This will create 354# the /dev/3dfx0 device to work with glide implementations. This should get 355# linked to /dev/3dfx and /dev/voodoo. Note that this is not the same as 356# the tdfx DRI module from XFree86 and is completely unrelated. 357# 358# To enable Linuxulator support, one must also include COMPAT_LINUX in the 359# config as well. The other option is to load both as modules. 360 361device tdfx # Enable 3Dfx Voodoo support 362device tdfx_linux # Enable Linuxulator support 363 364# Direct Rendering modules for 3D acceleration. 365device drm # DRM core module required by DRM drivers 366device mach64drm # ATI Rage Pro, Rage Mobility P/M, Rage XL 367device mgadrm # AGP Matrox G200, G400, G450, G550 368device r128drm # ATI Rage 128 369device radeondrm # ATI Radeon 370device savagedrm # S3 Savage3D, Savage4 371device sisdrm # SiS 300/305, 540, 630 372device tdfxdrm # 3dfx Voodoo 3/4/5 and Banshee 373options DRM_DEBUG # Include debug printfs (slow) 374 375# 376# Bus mouse 377# 378device mse 379hint.mse.0.at="isa" 380hint.mse.0.port="0x7fd9" 381hint.mse.0.irq="13" 382 383# 384# Network interfaces: 385# 386 387# ar: Arnet SYNC/570i hdlc sync 2/4 port V.35/X.21 serial driver 388# (requires sppp) 389# ath: Atheros a/b/g WiFi adapters (requires ath_hal and wlan) 390# ce: Cronyx Tau-PCI/32 sync single/dual port G.703/E1 serial adaptor 391# with 32 HDLC subchannels (requires sppp (default), or NETGRAPH if 392# NETGRAPH_CRONYX is configured) 393# cp: Cronyx Tau-PCI sync single/dual/four port 394# V.35/RS-232/RS-530/RS-449/X.21/G.703/E1/E3/T3/STS-1 395# serial adaptor (requires sppp (default), or NETGRAPH if 396# NETGRAPH_CRONYX is configured) 397# cs: IBM Etherjet and other Crystal Semi CS89x0-based adapters and pccard 398# ed: Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503 399# HP PC Lan+, various PC Card devices 400# (requires miibus) 401# ie: AT&T StarLAN 10 and EN100; 3Com 3C507; unknown NI5210; 402# Intel EtherExpress 403# oltr: Olicom ISA token-ring adapters OC-3115, OC-3117, OC-3118 and OC-3133. 404# Olicom PCI token-ring adapters OC-3136, OC-3137, OC-3139, OC-3140, 405# OC-3141, OC-3540 and OC-3250. 406# ral: Ralink Technology IEEE 802.11 wireless adapter 407# sbni: Granch SBNI12-xx ISA and PCI adapters 408# sr: RISCom/N2 hdlc sync 1/2 port V.35/X.21 serial driver (requires sppp) 409# ural: Ralink Technology RT2500USB IEEE 802.11 wireless adapter 410 411# Order for ISA/EISA devices is important here 412 413device ar 414device ce 415device cp 416device cs 417device ed 418hint.ed.0.at="isa" 419hint.ed.0.port="0x280" 420hint.ed.0.irq="5" 421hint.ed.0.maddr="0xd8000" 422device ie # Hints only required for Starlan 423hint.ie.2.at="isa" 424hint.ie.2.port="0x300" 425hint.ie.2.irq="5" 426hint.ie.2.maddr="0xd0000" 427# Hint for the PC98-only C-NET(98)S C-bus front-end of le(4). 428hint.le.0.at="isa" 429hint.le.0.port="0x03d0" 430hint.le.0.irq="6" 431device oltr 432device ral 433device sbni 434hint.sbni.0.at="isa" 435hint.sbni.0.port="0x210" 436hint.sbni.0.irq="0xefdead" 437hint.sbni.0.flags="0" 438device snc 439hint.snc.0.at="isa" 440hint.snc.0.port="0x888" 441hint.snc.0.irq="6" 442hint.snc.0.maddr="0xc0000" 443device sr 444device ural 445 446device ath 447device ath_hal # Atheros HAL (includes binary component) 448#device ath_rate_amrr # AMRR rate control for ath driver 449#device ath_rate_onoe # Onoe rate control for ath driver 450device ath_rate_sample # SampleRate rate control for the ath driver 451#device wlan # 802.11 layer 452 453# 454# SCSI host adapters: 455# 456# ct: WD33C93[ABC] based SCSI host adapters. 457# ncv: NCR 53C500 based SCSI host adapters. 458# nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters. 459# stg: TMC 18C30, 18C50 based SCSI host adapters. 460 461device ct 462hint.ct.0.at="isa" 463device ncv 464device nsp 465device stg 466 467# 468# SafeNet crypto driver: can be moved to the MI NOTES as soon as 469# it's tested on a big-endian machine 470# 471device safe # SafeNet 1141 472options SAFE_DEBUG # enable debugging support: hw.safe.debug 473options SAFE_RNDTEST # enable rndtest support 474 475##################################################################### 476 477# 478# Miscellaneous hardware: 479# 480# apm: Laptop Advanced Power Management (experimental) 481# pmtimer: Timer device driver for power management events (APM or ACPI) 482# cy: Cyclades serial driver 483# digi: Digiboard driver 484 485# Notes on APM 486# The flags takes the following meaning for apm0: 487# 0x0020 Statclock is broken. 488 489device apm 490hint.apm.0.flags="0x20" 491device canbus 492device canbepm 493device cy 494options CY_PCI_FASTINTR # Use with cy_pci unless irq is shared 495device digi 496# BIOS & FEP/OS components of device digi. 497device digi_CX 498device digi_CX_PCI 499device digi_EPCX 500device digi_EPCX_PCI 501device digi_Xe 502device digi_Xem 503device digi_Xr 504device olpt 505hint.olpt.0.at="isa" 506hint.olpt.0.port="0x040" 507device pmc 508hint.pmc.0.at="isa" 509hint.pmc.0.port="0x8f0" 510device pmtimer # Adjust system timer at wakeup time 511 512# 513# Laptop/Notebook options: 514# 515# See also: 516# apm under `Miscellaneous hardware' 517# above. 518 519# For older notebooks that signal a powerfail condition (external 520# power supply dropped, or battery state low) by issuing an NMI: 521 522options POWERFAIL_NMI # make it beep instead of panicing 523 524#--------------------------------------------------------------------------- 525# ISDN4BSD 526# 527# See /usr/share/examples/isdn/ROADMAP for an introduction to isdn4bsd. 528# 529# i4b passive ISDN cards support contains the following hardware drivers: 530# 531# isic - Siemens/Infineon ISDN ISAC/HSCX/IPAC chipset driver 532# iwic - Winbond W6692 PCI bus ISDN S/T interface controller 533# ifpi - AVM Fritz!Card PCI driver 534# ifpi2 - AVM Fritz!Card PCI version 2 driver 535# ihfc - Cologne Chip HFC ISA/ISA-PnP chipset driver 536# ifpnp - AVM Fritz!Card PnP driver 537# itjc - Siemens ISAC / TJNet Tiger300/320 chipset 538# 539# i4b active ISDN cards support contains the following hardware drivers: 540# 541# iavc - AVM B1 PCI, AVM B1 ISA, AVM T1 542# 543# Note that the ``options'' (if given) and ``device'' lines must BOTH 544# be uncommented to enable support for a given card ! 545# 546# In addition to a hardware driver (and probably an option) the mandatory 547# ISDN protocol stack devices and the mandatory support device must be 548# enabled as well as one or more devices from the optional devices section. 549# 550#--------------------------------------------------------------------------- 551# isic driver (Siemens/Infineon chipsets) 552# 553device isic 554# 555# PCI bus Cards: 556# -------------- 557# 558# ELSA MicroLink ISDN/PCI (same as ELSA QuickStep 1000pro PCI) 559options ELSA_QS1PCI 560# 561#--------------------------------------------------------------------------- 562# ifpnp driver for AVM Fritz!Card PnP 563# 564# AVM Fritz!Card PnP 565device ifpnp 566# 567#--------------------------------------------------------------------------- 568# ihfc driver for Cologne Chip ISA chipsets (experimental!) 569# 570# Teles 16.3c ISA PnP 571# AcerISDN P10 ISA PnP 572# TELEINT ISDN SPEED No.1 573device ihfc 574# 575#--------------------------------------------------------------------------- 576# ifpi driver for AVM Fritz!Card PCI 577# 578# AVM Fritz!Card PCI 579device ifpi 580# 581#--------------------------------------------------------------------------- 582# ifpi2 driver for AVM Fritz!Card PCI version 2 583# 584# AVM Fritz!Card PCI version 2 585device ifpi2 586# 587#--------------------------------------------------------------------------- 588# iwic driver for Winbond W6692 chipset 589# 590# ASUSCOM P-IN100-ST-D (and other Winbond W6692 based cards) 591device iwic 592# 593#--------------------------------------------------------------------------- 594# itjc driver for Siemens ISAC / TJNet Tiger300/320 chipset 595# 596# Traverse Technologies NETjet-S 597# Teles PCI-TJ 598device itjc 599# 600#--------------------------------------------------------------------------- 601# iavc driver (AVM active cards, needs i4bcapi driver!) 602# 603device iavc 604# 605#--------------------------------------------------------------------------- 606# ISDN Protocol Stack - mandatory for all hardware drivers 607# 608# Q.921 / layer 2 - i4b passive cards D channel handling 609device i4bq921 610# 611# Q.931 / layer 3 - i4b passive cards D channel handling 612device i4bq931 613# 614# layer 4 - i4b common passive and active card handling 615device i4b 616# 617#--------------------------------------------------------------------------- 618# ISDN devices - mandatory for all hardware drivers 619# 620# userland driver to do ISDN tracing (for passive cards only) 621device i4btrc 622options NI4BTRC=4 623# 624# userland driver to control the whole thing 625device i4bctl 626# 627#--------------------------------------------------------------------------- 628# ISDN devices - optional 629# 630# userland driver for access to raw B channel 631device i4brbch 632options NI4BRBCH=4 633# 634# userland driver for telephony 635device i4btel 636options NI4BTEL=2 637# 638# network driver for IP over raw HDLC ISDN 639device i4bipr 640options NI4BIPR=4 641# enable VJ header compression detection for ipr i/f 642options IPR_VJ 643# enable logging of the first n IP packets to isdnd (n=32 here) 644options IPR_LOG=32 645# 646# network driver for sync PPP over ISDN; requires an equivalent 647# number of sppp device to be configured 648device i4bisppp 649options NI4BISPPP=4 650# 651# B-channel interface to the netgraph subsystem 652device i4bing 653options NI4BING=2 654# 655# CAPI driver needed for active ISDN cards (see iavc driver above) 656device i4bcapi 657# 658#--------------------------------------------------------------------------- 659 660# 661# Set the number of PV entries per process. Increasing this can 662# stop panics related to heavy use of shared memory. However, that can 663# (combined with large amounts of physical memory) cause panics at 664# boot time due the kernel running out of VM space. 665# 666# If you're tweaking this, you might also want to increase the sysctls 667# "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target". 668# 669# The value below is the one more than the default. 670# 671options PMAP_SHPGPERPROC=201 672 673# 674# Change the size of the kernel virtual address space. Due to 675# constraints in loader(8) on i386, this must be a multiple of 4. 676# 256 = 1 GB of kernel address space. Increasing this also causes 677# a reduction of the address space in user processes. 512 splits 678# the 4GB cpu address space in half (2GB user, 2GB kernel). 679# 680options KVA_PAGES=260 681 682 683##################################################################### 684# ABI Emulation 685 686# Enable iBCS2 runtime support for SCO and ISC binaries 687options IBCS2 688 689# Emulate spx device for client side of SVR3 local X interface 690options SPX_HACK 691 692# Enable Linux ABI emulation 693options COMPAT_LINUX 694 695# Enable i386 a.out binary support 696options COMPAT_AOUT 697 698# Enable the linux-like proc filesystem support (requires COMPAT_LINUX 699# and PSEUDOFS) 700options LINPROCFS 701 702# Enable the linux-like sys filesystem support (requires COMPAT_LINUX 703# and PSEUDOFS) 704options LINSYSFS 705 706# 707# SysVR4 ABI emulation 708# 709# The svr4 ABI emulator can be statically compiled into the kernel or loaded as 710# a KLD module. 711# The STREAMS network emulation code can also be compiled statically or as a 712# module. If loaded as a module, it must be loaded before the svr4 module 713# (the /usr/sbin/svr4 script does this for you). If compiling statically, 714# the `streams' device must be configured into any kernel which also 715# specifies COMPAT_SVR4. It is possible to have a statically-configured 716# STREAMS device and a dynamically loadable svr4 emulator; the /usr/sbin/svr4 717# script understands that it doesn't need to load the `streams' module under 718# those circumstances. 719# Caveat: At this time, `options KTRACE' is required for the svr4 emulator 720# (whether static or dynamic). 721# 722options COMPAT_SVR4 # build emulator statically 723options DEBUG_SVR4 # enable verbose debugging 724device streams # STREAMS network driver (required for svr4). 725 726 727##################################################################### 728# VM OPTIONS 729 730# Disable the 4 MByte page PSE CPU feature. The PSE feature allows the 731# kernel to use 4 MByte pages to map the kernel instead of 4k pages. 732# This saves on the amount of memory needed for page tables needed to 733# map the kernel. You should only disable this feature as a temporary 734# workaround if you are having problems with it enabled. 735# 736#options DISABLE_PSE 737 738# Disable the global pages PGE CPU feature. The PGE feature allows pages 739# to be marked with the PG_G bit. TLB entries for these pages are not 740# flushed from the cache when %cr3 is reloaded. This can make context 741# switches less expensive. You should only disable this feature as a 742# temporary workaround if you are having problems with it enabled. 743# 744#options DISABLE_PG_G 745 746# KSTACK_PAGES is the number of memory pages to assign to the kernel 747# stack of each thread. 748 749options KSTACK_PAGES=3 750 751##################################################################### 752 753# More undocumented options for linting. 754# Note that documenting these are not considered an affront. 755 756options FB_INSTALL_CDEV # install a CDEV entry in /dev 757 758# PECOFF module (Win32 Execution Format) 759options PECOFF_SUPPORT 760options PECOFF_DEBUG 761 762options I4B_SMP_WORKAROUND 763options I586_PMC_GUPROF=0x70000 764options KBDIO_DEBUG=2 765options KBD_MAXRETRY=4 766options KBD_MAXWAIT=6 767options KBD_RESETDELAY=201 768 769options TIMER_FREQ=((14318182+6)/12) 770 771options VM_KMEM_SIZE 772options VM_KMEM_SIZE_MAX 773options VM_KMEM_SIZE_SCALE 774 775 776# The I/O device 777device io 778 779 780##################################################################### 781# Devices we don't want to deal with 782 783nodevice bt 784nodevice adw 785nodevice aha 786nodevice ahb 787nodevice ahd 788nodevice mpt 789nodevice trm 790nodevice wds 791nodevice dpt 792nodevice ciss 793nodevice iir 794nodevice mly 795nodevice ida # Compaq Smart RAID 796nodevice mlx # Mylex DAC960 797nodevice amr # AMI MegaRAID 798nodevice twe # 3ware ATA RAID 799nodevice ataraid 800nodevice cm 801nodevice ex 802nodevice fea 803nodevice intpm 804nodevice alpm 805nodevice ichsmb 806nodevice viapm 807nodevice amdpm 808nodevice amdsmb 809nodevice nfpm 810nodevice nfsmb 811 812 813##################################################################### 814# Options we don't want to deal with 815 816nooption AHD_DEBUG 817nooption AHD_DEBUG_OPTS 818nooption AHD_REG_PRETTY_PRINT 819nooption ADW_ALLOW_MEMIO 820nooption DPT_LOST_IRQ 821nooption DPT_RESET_HBA 822nooption DPT_TIMEOUT_FACTOR 823nooption AAC_DEBUG 824nooption ACPI_MAX_THREADS 825 826 827##################################################################### 828# Make options we don't want to deal with 829 830nomakeoption ATKBD_DFLT_KEYMAP 831