NOTES revision 171196
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 171196 2007-07-04 00:18:39Z bz $ 8# 9 10# 11# We want LINT to cover profiling as well. 12profile 2 13 14 15##################################################################### 16# SMP OPTIONS: 17# 18# The apic device enables the use of the I/O APIC for interrupt delivery. 19# The apic device can be used in both UP and SMP kernels, but is required 20# for SMP kernels. Thus, the apic device is not strictly an SMP option, 21# but it is a prerequisite for SMP. 22# 23 24# Mandatory: 25device apic # I/O apic 26 27# 28# Watchdog routines. 29# 30options MP_WATCHDOG 31 32# Debugging options. 33# 34options STOP_NMI # Stop CPUS using NMI instead of IPI 35 36 37 38##################################################################### 39# CPU OPTIONS 40 41# 42# You must specify at least one CPU (the one you intend to run on); 43# deleting the specification for CPUs you don't need to use may make 44# parts of the system run faster. 45# 46cpu I486_CPU 47cpu I586_CPU # aka Pentium(tm) 48cpu I686_CPU # aka Pentium Pro(tm) 49 50# 51# Options for CPU features. 52# 53# CPU_BLUELIGHTNING_3X enables triple-clock mode on IBM Blue Lightning 54# CPU if CPU supports it. The default is double-clock mode on 55# BlueLightning CPU box. 56# 57# CPU_BLUELIGHTNING_FPU_OP_CACHE enables FPU operand cache on IBM 58# BlueLightning CPU. It works only with Cyrix FPU, and this option 59# should not be used with Intel FPU. 60# 61# CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1). 62# 63# CPU_CYRIX_NO_LOCK enables weak locking for the entire address space 64# of Cyrix 6x86 and 6x86MX CPUs by setting the NO_LOCK bit of CCR1. 65# Otherwise, the NO_LOCK bit of CCR1 is cleared. (NOTE 3) 66# 67# CPU_DIRECT_MAPPED_CACHE sets L1 cache of Cyrix 486DLC CPU in direct 68# mapped mode. Default is 2-way set associative mode. 69# 70# CPU_DISABLE_5X86_LSSER disables load store serialize (i.e., enables 71# reorder). This option should not be used if you use memory mapped 72# I/O device(s). 73# 74# CPU_DISABLE_CMPXCHG disables the CMPXCHG instruction on > i386 IA32 75# machines. VmWare 3.x seems to emulate this instruction poorly, causing 76# the guest OS to run very slowly. This problem appears to be fixed in 77# VmWare 4.x, at least in version 4.5.2, so that enabling this option with 78# VmWare 4.x will result in locking operations to be 20-30 times slower. 79# Enabling this with an SMP kernel will cause the kernel to be unusable. 80# 81# CPU_DISABLE_SSE explicitly prevents I686_CPU from turning on SSE. 82# 83# CPU_FASTER_5X86_FPU enables faster FPU exception handler. 84# 85# CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products 86# for i386 machines. 87# 88# CPU_IORT defines I/O clock delay time (NOTE 1). Default values of 89# I/O clock delay time on Cyrix 5x86 and 6x86 are 0 and 7,respectively 90# (no clock delay). 91# 92# CPU_L2_LATENCY specifies the L2 cache latency value. This option is used 93# only when CPU_PPRO2CELERON is defined and Mendocino Celeron is detected. 94# The default value is 5. 95# 96# CPU_LOOP_EN prevents flushing the prefetch buffer if the destination 97# of a jump is already present in the prefetch buffer on Cyrix 5x86(NOTE 98# 1). 99# 100# CPU_PPRO2CELERON enables L2 cache of Mendocino Celeron CPUs. This option 101# is useful when you use Socket 8 to Socket 370 converter, because most Pentium 102# Pro BIOSs do not enable L2 cache of Mendocino Celeron CPUs. 103# 104# CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1). 105# 106# CPU_SUSP_HLT enables suspend on HALT. If this option is set, CPU 107# enters suspend mode following execution of HALT instruction. 108# 109# CPU_UPGRADE_HW_CACHE eliminates unneeded cache flush instruction(s). 110# 111# CPU_WT_ALLOC enables write allocation on Cyrix 6x86/6x86MX and AMD 112# K5/K6/K6-2 CPUs. 113# 114# CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache 115# flush at hold state. 116# 117# CYRIX_CACHE_REALLY_WORKS enables (1) CPU cache on Cyrix 486 CPUs 118# without cache flush at hold state, and (2) write-back CPU cache on 119# Cyrix 6x86 whose revision < 2.7 (NOTE 2). 120# 121# NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY 122# Pentiums) from locking up when a LOCK CMPXCHG8B instruction is 123# executed. This option is only needed if I586_CPU is also defined, 124# and should be included for any non-Pentium CPU that defines it. 125# 126# NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors 127# which indicates that the 15-16MB range is *definitely* not being 128# occupied by an ISA memory hole. 129# 130# NOTE 1: The options, CPU_BTB_EN, CPU_LOOP_EN, CPU_IORT, 131# CPU_LOOP_EN and CPU_RSTK_EN should not be used because of CPU bugs. 132# These options may crash your system. 133# 134# NOTE 2: If CYRIX_CACHE_REALLY_WORKS is not set, CPU cache is enabled 135# in write-through mode when revision < 2.7. If revision of Cyrix 136# 6x86 >= 2.7, CPU cache is always enabled in write-back mode. 137# 138# NOTE 3: This option may cause failures for software that requires 139# locked cycles in order to operate correctly. 140# 141options CPU_BLUELIGHTNING_3X 142options CPU_BLUELIGHTNING_FPU_OP_CACHE 143options CPU_BTB_EN 144options CPU_DIRECT_MAPPED_CACHE 145options CPU_DISABLE_5X86_LSSER 146options CPU_DISABLE_CMPXCHG 147#options CPU_DISABLE_SSE 148options CPU_FASTER_5X86_FPU 149options CPU_I486_ON_386 150options CPU_IORT 151options CPU_L2_LATENCY=5 152options CPU_LOOP_EN 153options CPU_PPRO2CELERON 154options CPU_RSTK_EN 155options CPU_SUSP_HLT 156options CPU_UPGRADE_HW_CACHE 157options CPU_WT_ALLOC 158options CYRIX_CACHE_WORKS 159options CYRIX_CACHE_REALLY_WORKS 160#options NO_F00F_HACK 161 162# Debug options 163options NPX_DEBUG # enable npx debugging 164 165# 166# PERFMON causes the driver for Pentium/Pentium Pro performance counters 167# to be compiled. See perfmon(4) for more information. 168# 169options PERFMON 170 171 172##################################################################### 173# NETWORKING OPTIONS 174 175# 176# DEVICE_POLLING adds support for mixed interrupt-polling handling 177# of network device drivers, which has significant benefits in terms 178# of robustness to overloads and responsivity, as well as permitting 179# accurate scheduling of the CPU time between kernel network processing 180# and other activities. The drawback is a moderate (up to 1/HZ seconds) 181# potential increase in response times. 182# It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING 183# to achieve smoother behaviour. 184# Additionally, you can enable/disable polling at runtime with help of 185# the ifconfig(8) utility, and select the CPU fraction reserved to 186# userland with the sysctl variable kern.polling.user_frac 187# (default 50, range 0..100). 188# 189# Not all device drivers support this mode of operation at the time of 190# this writing. See polling(4) for more details. 191 192options DEVICE_POLLING 193 194 195##################################################################### 196# CLOCK OPTIONS 197 198# The following options are used for debugging clock behavior only, and 199# should not be used for production systems. 200 201# CLK_CALIBRATION_LOOP causes clock calibration to be run in a loop at 202# startup until the user presses a key. (The i8254 clock is always 203# calibrated relative to the RTC (mc146818a) and this option causes the 204# calibration to be repeated.) 205options CLK_CALIBRATION_LOOP 206 207# CLK_USE_I8254_CALIBRATION causes the calibrated frequency of the i8254 208# clock to actually be used. 209options CLK_USE_I8254_CALIBRATION 210 211 212##################################################################### 213# MISCELLANEOUS DEVICES AND OPTIONS 214 215# 216# sio: serial ports (see sio(4)), including support for various 217# PC Card devices, such as Modem and NICs 218# 219device sio 220hint.sio.0.at="isa" 221hint.sio.0.port="0x3F8" 222hint.sio.0.flags="0x10" 223hint.sio.0.irq="4" 224 225# `flags' specific to sio(4). 226# 0x10 enable console support for this unit. Other console flags 227# (if applicable) are ignored unless this is set. Enabling 228# console support does not make the unit the preferred console. 229# Boot with -h or set boot_serial=YES in the loader. For sio(4) 230# specifically, the 0x20 flag can also be set (see above). 231# Currently, at most one unit can have console support; the 232# first one (in config file order) with this flag set is 233# preferred. Setting this flag for sio0 gives the old behaviour. 234# 0x20 force this unit to be the console (unless there is another 235# higher priority console). This replaces the COMCONSOLE option. 236# 0x40 reserve this unit for low level console operations. Do not 237# access the device in any normal way. 238# 0x80 use this port for serial line gdb support in ddb. Also known 239# as debug port. 240# PnP `flags' 241# 0x1 disable probing of this device. Used to prevent your modem 242# from being attached as a PnP modem. 243# Other flags for sio that aren't documented in the man page. 244# 0x20000 enable hardware RTS/CTS and larger FIFOs. Only works for 245# ST16650A-compatible UARTs. 246 247# Options for sio: 248options COM_ESP # Code for Hayes ESP. 249options COM_MULTIPORT # Code for some cards with shared IRQs. 250options CONSPEED=115200 # Speed for serial console 251 # (default 9600). 252 253device speaker #Play IBM BASIC-style noises out your speaker 254hint.speaker.0.at="isa" 255hint.speaker.0.port="0x35" 256device gzip #Exec gzipped a.out's. REQUIRES COMPAT_AOUT! 257device apm_saver # Requires APM 258 259 260##################################################################### 261# HARDWARE BUS CONFIGURATION 262 263# 264# ISA bus 265# 266device isa 267 268# 269# Options for `isa': 270# 271# AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A 272# interrupt controller. This saves about 0.7-1.25 usec for each interrupt. 273# This option breaks suspend/resume on some portables. 274# 275# MAXMEM specifies the amount of RAM on the machine; if this is not 276# specified, FreeBSD will first read the amount of memory from the CMOS 277# RAM, so the amount of memory will initially be limited to 64MB or 16MB 278# depending on the BIOS. If the BIOS reports 64MB, a memory probe will 279# then attempt to detect the installed amount of RAM. If this probe 280# fails to detect >64MB RAM you will have to use the MAXMEM option. 281# The amount is in kilobytes, so for a machine with 128MB of RAM, it would 282# be 131072 (128 * 1024). 283# 284# BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to 285# reset the CPU for reboot. This is needed on some systems with broken 286# keyboard controllers. 287 288options AUTO_EOI_1 289 290options MAXMEM=(128*1024) 291#options BROKEN_KEYBOARD_RESET 292options EPSON_BOUNCEDMA 293options EPSON_MEMWIN 294 295# 296# PCI bus & PCI options: 297# 298device pci 299 300# 301# AGP GART support 302device agp 303 304 305##################################################################### 306# HARDWARE DEVICE CONFIGURATION 307 308# PC98 keyboard 309device pckbd 310hint.pckbd.0.at="isa" 311hint.pckbd.0.port="0x041" 312hint.pckbd.0.irq="1" 313 314# GDC screen 315device gdc 316hint.gdc.0.at="isa" 317options LINE30 318 319# 320# The Numeric Processing eXtension driver. This is non-optional. 321device npx 322 323# 324# `flags' for npx0: 325# 0x01 don't use the npx registers to optimize bcopy. 326# 0x02 don't use the npx registers to optimize bzero. 327# 0x04 don't use the npx registers to optimize copyin or copyout. 328# The npx registers are normally used to optimize copying and zeroing when 329# all of the following conditions are satisfied: 330# I586_CPU is an option 331# the cpu is an i586 (perhaps not a Pentium) 332# the probe for npx0 succeeds 333# INT 16 exception handling works. 334# Then copying and zeroing using the npx registers is normally 30-100% faster. 335# The flags can be used to control cases where it doesn't work or is slower. 336# Setting them at boot time using hints works right (the optimizations 337# are not used until later in the bootstrap when npx0 is attached). 338# Flag 0x08 automatically disables the i586 optimized routines. 339# 340 341# 342# Optional devices: 343# 344 345# 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support. This will create 346# the /dev/3dfx0 device to work with glide implementations. This should get 347# linked to /dev/3dfx and /dev/voodoo. Note that this is not the same as 348# the tdfx DRI module from XFree86 and is completely unrelated. 349# 350# To enable Linuxulator support, one must also include COMPAT_LINUX in the 351# config as well. The other option is to load both as modules. 352 353device tdfx # Enable 3Dfx Voodoo support 354device tdfx_linux # Enable Linuxulator support 355 356# Direct Rendering modules for 3D acceleration. 357device drm # DRM core module required by DRM drivers 358device mach64drm # ATI Rage Pro, Rage Mobility P/M, Rage XL 359device mgadrm # AGP Matrox G200, G400, G450, G550 360device r128drm # ATI Rage 128 361device radeondrm # ATI Radeon 362device savagedrm # S3 Savage3D, Savage4 363device sisdrm # SiS 300/305, 540, 630 364device tdfxdrm # 3dfx Voodoo 3/4/5 and Banshee 365options DRM_DEBUG # Include debug printfs (slow) 366 367# 368# Bus mouse 369# 370device mse 371hint.mse.0.at="isa" 372hint.mse.0.port="0x7fd9" 373hint.mse.0.irq="13" 374 375# 376# Network interfaces: 377# 378 379# ar: Arnet SYNC/570i hdlc sync 2/4 port V.35/X.21 serial driver 380# (requires sppp) 381# ath: Atheros a/b/g WiFi adapters (requires ath_hal and wlan) 382# ce: Cronyx Tau-PCI/32 sync single/dual port G.703/E1 serial adaptor 383# with 32 HDLC subchannels (requires sppp (default), or NETGRAPH if 384# NETGRAPH_CRONYX is configured) 385# cp: Cronyx Tau-PCI sync single/dual/four port 386# V.35/RS-232/RS-530/RS-449/X.21/G.703/E1/E3/T3/STS-1 387# serial adaptor (requires sppp (default), or NETGRAPH if 388# NETGRAPH_CRONYX is configured) 389# cs: IBM Etherjet and other Crystal Semi CS89x0-based adapters and pccard 390# ed: Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503 391# HP PC Lan+, various PC Card devices 392# (requires miibus) 393# ie: AT&T StarLAN 10 and EN100; 3Com 3C507; unknown NI5210; 394# Intel EtherExpress 395# oltr: Olicom ISA token-ring adapters OC-3115, OC-3117, OC-3118 and OC-3133. 396# Olicom PCI token-ring adapters OC-3136, OC-3137, OC-3139, OC-3140, 397# OC-3141, OC-3540 and OC-3250. 398# ral: Ralink Technology IEEE 802.11 wireless adapter 399# sbni: Granch SBNI12-xx ISA and PCI adapters 400# sr: RISCom/N2 hdlc sync 1/2 port V.35/X.21 serial driver (requires sppp) 401# ural: Ralink Technology RT2500USB IEEE 802.11 wireless adapter 402 403# Order for ISA/EISA devices is important here 404 405device ar 406device ce 407device cp 408device cs 409device ed 410hint.ed.0.at="isa" 411hint.ed.0.port="0x280" 412hint.ed.0.irq="5" 413hint.ed.0.maddr="0xd8000" 414device ie # Hints only required for Starlan 415hint.ie.2.at="isa" 416hint.ie.2.port="0x300" 417hint.ie.2.irq="5" 418hint.ie.2.maddr="0xd0000" 419# Hint for the PC98-only C-NET(98)S C-bus front-end of le(4). 420hint.le.0.at="isa" 421hint.le.0.port="0x03d0" 422hint.le.0.irq="6" 423device oltr 424device ral 425device sbni 426hint.sbni.0.at="isa" 427hint.sbni.0.port="0x210" 428hint.sbni.0.irq="0xefdead" 429hint.sbni.0.flags="0" 430device snc 431hint.snc.0.at="isa" 432hint.snc.0.port="0x888" 433hint.snc.0.irq="6" 434hint.snc.0.maddr="0xc0000" 435device sr 436device ural 437 438device ath 439device ath_hal # Atheros HAL (includes binary component) 440#device ath_rate_amrr # AMRR rate control for ath driver 441#device ath_rate_onoe # Onoe rate control for ath driver 442device ath_rate_sample # SampleRate rate control for the ath driver 443#device wlan # 802.11 layer 444 445# 446# SCSI host adapters: 447# 448# ct: WD33C93[ABC] based SCSI host adapters. 449# ncv: NCR 53C500 based SCSI host adapters. 450# nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters. 451# stg: TMC 18C30, 18C50 based SCSI host adapters. 452 453device ct 454hint.ct.0.at="isa" 455device ncv 456device nsp 457device stg 458 459# 460# SafeNet crypto driver: can be moved to the MI NOTES as soon as 461# it's tested on a big-endian machine 462# 463device safe # SafeNet 1141 464options SAFE_DEBUG # enable debugging support: hw.safe.debug 465options SAFE_RNDTEST # enable rndtest support 466 467##################################################################### 468 469# 470# Miscellaneous hardware: 471# 472# apm: Laptop Advanced Power Management (experimental) 473# pmtimer: Timer device driver for power management events (APM or ACPI) 474# cy: Cyclades serial driver 475# digi: Digiboard driver 476 477# Notes on APM 478# The flags takes the following meaning for apm0: 479# 0x0020 Statclock is broken. 480 481device apm 482hint.apm.0.flags="0x20" 483device canbus 484device canbepm 485device cy 486options CY_PCI_FASTINTR # Use with cy_pci unless irq is shared 487device digi 488# BIOS & FEP/OS components of device digi. 489device digi_CX 490device digi_CX_PCI 491device digi_EPCX 492device digi_EPCX_PCI 493device digi_Xe 494device digi_Xem 495device digi_Xr 496device olpt 497hint.olpt.0.at="isa" 498hint.olpt.0.port="0x040" 499device pmc 500hint.pmc.0.at="isa" 501hint.pmc.0.port="0x8f0" 502device pmtimer # Adjust system timer at wakeup time 503 504# 505# Laptop/Notebook options: 506# 507# See also: 508# apm under `Miscellaneous hardware' 509# above. 510 511# For older notebooks that signal a powerfail condition (external 512# power supply dropped, or battery state low) by issuing an NMI: 513 514options POWERFAIL_NMI # make it beep instead of panicing 515 516#--------------------------------------------------------------------------- 517# ISDN4BSD 518# 519# See /usr/share/examples/isdn/ROADMAP for an introduction to isdn4bsd. 520# 521# i4b passive ISDN cards support contains the following hardware drivers: 522# 523# isic - Siemens/Infineon ISDN ISAC/HSCX/IPAC chipset driver 524# iwic - Winbond W6692 PCI bus ISDN S/T interface controller 525# ifpi - AVM Fritz!Card PCI driver 526# ifpi2 - AVM Fritz!Card PCI version 2 driver 527# ihfc - Cologne Chip HFC ISA/ISA-PnP chipset driver 528# ifpnp - AVM Fritz!Card PnP driver 529# itjc - Siemens ISAC / TJNet Tiger300/320 chipset 530# 531# i4b active ISDN cards support contains the following hardware drivers: 532# 533# iavc - AVM B1 PCI, AVM B1 ISA, AVM T1 534# 535# Note that the ``options'' (if given) and ``device'' lines must BOTH 536# be uncommented to enable support for a given card ! 537# 538# In addition to a hardware driver (and probably an option) the mandatory 539# ISDN protocol stack devices and the mandatory support device must be 540# enabled as well as one or more devices from the optional devices section. 541# 542#--------------------------------------------------------------------------- 543# isic driver (Siemens/Infineon chipsets) 544# 545device isic 546# 547# PCI bus Cards: 548# -------------- 549# 550# ELSA MicroLink ISDN/PCI (same as ELSA QuickStep 1000pro PCI) 551options ELSA_QS1PCI 552# 553#--------------------------------------------------------------------------- 554# ifpnp driver for AVM Fritz!Card PnP 555# 556# AVM Fritz!Card PnP 557device ifpnp 558# 559#--------------------------------------------------------------------------- 560# ihfc driver for Cologne Chip ISA chipsets (experimental!) 561# 562# Teles 16.3c ISA PnP 563# AcerISDN P10 ISA PnP 564# TELEINT ISDN SPEED No.1 565device ihfc 566# 567#--------------------------------------------------------------------------- 568# ifpi driver for AVM Fritz!Card PCI 569# 570# AVM Fritz!Card PCI 571device ifpi 572# 573#--------------------------------------------------------------------------- 574# ifpi2 driver for AVM Fritz!Card PCI version 2 575# 576# AVM Fritz!Card PCI version 2 577device ifpi2 578# 579#--------------------------------------------------------------------------- 580# iwic driver for Winbond W6692 chipset 581# 582# ASUSCOM P-IN100-ST-D (and other Winbond W6692 based cards) 583device iwic 584# 585#--------------------------------------------------------------------------- 586# itjc driver for Siemens ISAC / TJNet Tiger300/320 chipset 587# 588# Traverse Technologies NETjet-S 589# Teles PCI-TJ 590device itjc 591# 592#--------------------------------------------------------------------------- 593# iavc driver (AVM active cards, needs i4bcapi driver!) 594# 595device iavc 596# 597#--------------------------------------------------------------------------- 598# ISDN Protocol Stack - mandatory for all hardware drivers 599# 600# Q.921 / layer 2 - i4b passive cards D channel handling 601device i4bq921 602# 603# Q.931 / layer 3 - i4b passive cards D channel handling 604device i4bq931 605# 606# layer 4 - i4b common passive and active card handling 607device i4b 608# 609#--------------------------------------------------------------------------- 610# ISDN devices - mandatory for all hardware drivers 611# 612# userland driver to do ISDN tracing (for passive cards only) 613device i4btrc 614options NI4BTRC=4 615# 616# userland driver to control the whole thing 617device i4bctl 618# 619#--------------------------------------------------------------------------- 620# ISDN devices - optional 621# 622# userland driver for access to raw B channel 623device i4brbch 624options NI4BRBCH=4 625# 626# userland driver for telephony 627device i4btel 628options NI4BTEL=2 629# 630#XXXBZ# IPR and ISPPP are not usable until I4B is locked. 631# network driver for IP over raw HDLC ISDN 632#XXXBZ#device i4bipr 633#XXXBZ#options NI4BIPR=4 634# enable VJ header compression detection for ipr i/f 635#XXXBZ#options IPR_VJ 636# enable logging of the first n IP packets to isdnd (n=32 here) 637#XXXBZ#options IPR_LOG=32 638# 639# network driver for sync PPP over ISDN; requires an equivalent 640# number of sppp device to be configured 641#XXXBZ#device i4bisppp 642#XXXBZ#options NI4BISPPP=4 643# 644# B-channel interface to the netgraph subsystem 645#XXXBZ#device i4bing 646#XXXBZ#options 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# Enable the linux-like sys filesystem support (requires COMPAT_LINUX 696# and PSEUDOFS) 697options LINSYSFS 698 699# 700# SysVR4 ABI emulation 701# 702# The svr4 ABI emulator can be statically compiled into the kernel or loaded as 703# a KLD module. 704# The STREAMS network emulation code can also be compiled statically or as a 705# module. If loaded as a module, it must be loaded before the svr4 module 706# (the /usr/sbin/svr4 script does this for you). If compiling statically, 707# the `streams' device must be configured into any kernel which also 708# specifies COMPAT_SVR4. It is possible to have a statically-configured 709# STREAMS device and a dynamically loadable svr4 emulator; the /usr/sbin/svr4 710# script understands that it doesn't need to load the `streams' module under 711# those circumstances. 712# Caveat: At this time, `options KTRACE' is required for the svr4 emulator 713# (whether static or dynamic). 714# 715options COMPAT_SVR4 # build emulator statically 716options DEBUG_SVR4 # enable verbose debugging 717device streams # STREAMS network driver (required for svr4). 718 719 720##################################################################### 721# VM OPTIONS 722 723# Disable the 4 MByte page PSE CPU feature. The PSE feature allows the 724# kernel to use 4 MByte pages to map the kernel instead of 4k pages. 725# This saves on the amount of memory needed for page tables needed to 726# map the kernel. You should only disable this feature as a temporary 727# workaround if you are having problems with it enabled. 728# 729#options DISABLE_PSE 730 731# Disable the global pages PGE CPU feature. The PGE feature allows pages 732# to be marked with the PG_G bit. TLB entries for these pages are not 733# flushed from the cache when %cr3 is reloaded. This can make context 734# switches less expensive. You should only disable this feature as a 735# temporary workaround if you are having problems with it enabled. 736# 737#options DISABLE_PG_G 738 739# KSTACK_PAGES is the number of memory pages to assign to the kernel 740# stack of each thread. 741 742options KSTACK_PAGES=3 743 744##################################################################### 745 746# More undocumented options for linting. 747# Note that documenting these are not considered an affront. 748 749options FB_INSTALL_CDEV # install a CDEV entry in /dev 750 751# PECOFF module (Win32 Execution Format) 752options PECOFF_SUPPORT 753options PECOFF_DEBUG 754 755options I4B_SMP_WORKAROUND 756options I586_PMC_GUPROF=0x70000 757options KBDIO_DEBUG=2 758options KBD_MAXRETRY=4 759options KBD_MAXWAIT=6 760options KBD_RESETDELAY=201 761 762options TIMER_FREQ=((14318182+6)/12) 763 764options VM_KMEM_SIZE 765options VM_KMEM_SIZE_MAX 766options VM_KMEM_SIZE_SCALE 767 768 769##################################################################### 770# Devices we don't want to deal with 771 772nodevice bt 773nodevice adw 774nodevice aha 775nodevice ahb 776nodevice ahd 777nodevice mpt 778nodevice trm 779nodevice wds 780nodevice dpt 781nodevice ciss 782nodevice iir 783nodevice mly 784nodevice ida # Compaq Smart RAID 785nodevice mlx # Mylex DAC960 786nodevice amr # AMI MegaRAID 787nodevice twe # 3ware ATA RAID 788nodevice ataraid 789nodevice cm 790nodevice ex 791nodevice fea 792nodevice intpm 793nodevice alpm 794nodevice ichsmb 795nodevice viapm 796nodevice amdpm 797nodevice amdsmb 798nodevice nfpm 799nodevice nfsmb 800 801 802##################################################################### 803# Options we don't want to deal with 804 805nooption AHD_DEBUG 806nooption AHD_DEBUG_OPTS 807nooption AHD_REG_PRETTY_PRINT 808nooption ADW_ALLOW_MEMIO 809nooption DPT_LOST_IRQ 810nooption DPT_RESET_HBA 811nooption DPT_TIMEOUT_FACTOR 812nooption AAC_DEBUG 813 814 815##################################################################### 816# Make options we don't want to deal with 817