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# 8 9# 10# Enable the kernel DTrace hooks which are required to load the DTrace 11# kernel modules. 12# 13options KDTRACE_HOOKS 14 15# DTrace core 16# NOTE: introduces CDDL-licensed components into the kernel 17#device dtrace 18 19# DTrace modules 20#device dtrace_profile 21#device dtrace_sdt 22#device dtrace_fbt 23#device dtrace_systrace 24#device dtrace_prototype 25#device dtnfscl 26#device dtmalloc 27 28# Alternatively include all the DTrace modules 29#device dtraceall 30 31 32##################################################################### 33# SMP OPTIONS: 34# 35# Notes: 36# 37# IPI_PREEMPTION instructs the kernel to preempt threads running on other 38# CPUS if needed. Relies on the PREEMPTION option 39 40# Optional: 41options IPI_PREEMPTION 42device atpic # Optional legacy pic support 43device mptable # Optional MPSPEC mptable support 44 45# Debugging options. 46# 47options COUNT_XINVLTLB_HITS # Counters for TLB events 48options COUNT_IPIS # Per-CPU IPI interrupt counters 49 50 51 52##################################################################### 53# CPU OPTIONS 54 55# 56# You must specify at least one CPU (the one you intend to run on); 57# deleting the specification for CPUs you don't need to use may make 58# parts of the system run faster. 59# 60cpu HAMMER # aka K8, aka Opteron & Athlon64 61 62# 63# Options for CPU features. 64# 65 66 67##################################################################### 68# NETWORKING OPTIONS 69 70# 71# DEVICE_POLLING adds support for mixed interrupt-polling handling 72# of network device drivers, which has significant benefits in terms 73# of robustness to overloads and responsivity, as well as permitting 74# accurate scheduling of the CPU time between kernel network processing 75# and other activities. The drawback is a moderate (up to 1/HZ seconds) 76# potential increase in response times. 77# It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING 78# to achieve smoother behaviour. 79# Additionally, you can enable/disable polling at runtime with help of 80# the ifconfig(8) utility, and select the CPU fraction reserved to 81# userland with the sysctl variable kern.polling.user_frac 82# (default 50, range 0..100). 83# 84# Not all device drivers support this mode of operation at the time of 85# this writing. See polling(4) for more details. 86 87options DEVICE_POLLING 88 89# BPF_JITTER adds support for BPF just-in-time compiler. 90 91options BPF_JITTER 92 93 94##################################################################### 95# CLOCK OPTIONS 96 97# Provide read/write access to the memory in the clock chip. 98device nvram # Access to rtc cmos via /dev/nvram 99 100 101##################################################################### 102# MISCELLANEOUS DEVICES AND OPTIONS 103 104device speaker #Play IBM BASIC-style noises out your speaker 105envvar hint.speaker.0.at="isa" 106envvar hint.speaker.0.port="0x61" 107 108 109##################################################################### 110# HARDWARE BUS CONFIGURATION 111 112# 113# ISA bus 114# 115device isa 116 117# 118# Options for `isa': 119# 120# AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A 121# interrupt controller. This saves about 0.7-1.25 usec for each interrupt. 122# This option breaks suspend/resume on some portables. 123# 124# AUTO_EOI_2 enables the `automatic EOI' feature for the slave 8259A 125# interrupt controller. This saves about 0.7-1.25 usec for each interrupt. 126# Automatic EOI is documented not to work for the slave with the 127# original i8259A, but it works for some clones and some integrated 128# versions. 129# 130# MAXMEM specifies the amount of RAM on the machine; if this is not 131# specified, FreeBSD will first read the amount of memory from the CMOS 132# RAM, so the amount of memory will initially be limited to 64MB or 16MB 133# depending on the BIOS. If the BIOS reports 64MB, a memory probe will 134# then attempt to detect the installed amount of RAM. If this probe 135# fails to detect >64MB RAM you will have to use the MAXMEM option. 136# The amount is in kilobytes, so for a machine with 128MB of RAM, it would 137# be 131072 (128 * 1024). 138# 139# BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to 140# reset the CPU for reboot. This is needed on some systems with broken 141# keyboard controllers. 142 143options AUTO_EOI_1 144#options AUTO_EOI_2 145 146options MAXMEM=(128*1024) 147#options BROKEN_KEYBOARD_RESET 148 149# 150# AGP GART support 151device agp 152 153# 154# AGP debugging. 155# 156options AGP_DEBUG 157 158 159##################################################################### 160# HARDWARE DEVICE CONFIGURATION 161 162# To include support for VGA VESA video modes 163options VESA 164 165# Turn on extra debugging checks and output for VESA support. 166options VESA_DEBUG 167 168device dpms # DPMS suspend & resume via VESA BIOS 169 170# x86 real mode BIOS emulator, required by atkbdc/dpms/vesa 171options X86BIOS 172 173# 174# Optional devices: 175# 176 177# PS/2 mouse 178device psm 179envvar hint.psm.0.at="atkbdc" 180envvar hint.psm.0.irq="12" 181 182# Options for psm: 183options PSM_HOOKRESUME #hook the system resume event, useful 184 #for some laptops 185options PSM_RESETAFTERSUSPEND #reset the device at the resume event 186 187# The keyboard controller; it controls the keyboard and the PS/2 mouse. 188device atkbdc 189envvar hint.atkbdc.0.at="isa" 190envvar hint.atkbdc.0.port="0x060" 191 192# The AT keyboard 193device atkbd 194envvar hint.atkbd.0.at="atkbdc" 195envvar hint.atkbd.0.irq="1" 196 197# Options for atkbd: 198options ATKBD_DFLT_KEYMAP # specify the built-in keymap 199makeoptions ATKBD_DFLT_KEYMAP=fr.dvorak 200 201# `flags' for atkbd: 202# 0x01 Force detection of keyboard, else we always assume a keyboard 203# 0x02 Don't reset keyboard, useful for some newer ThinkPads 204# 0x03 Force detection and avoid reset, might help with certain 205# dockingstations 206# 0x04 Old-style (XT) keyboard support, useful for older ThinkPads 207 208# Video card driver for VGA adapters. 209device vga 210envvar hint.vga.0.at="isa" 211 212# Options for vga: 213# Try the following option if the mouse pointer is not drawn correctly 214# or font does not seem to be loaded properly. May cause flicker on 215# some systems. 216options VGA_ALT_SEQACCESS 217 218# If you can dispense with some vga driver features, you may want to 219# use the following options to save some memory. 220#options VGA_NO_FONT_LOADING # don't save/load font 221#options VGA_NO_MODE_CHANGE # don't change video modes 222 223# Older video cards may require this option for proper operation. 224options VGA_SLOW_IOACCESS # do byte-wide i/o's to TS and GDC regs 225 226# The following option probably won't work with the LCD displays. 227options VGA_WIDTH90 # support 90 column modes 228 229# Debugging. 230options VGA_DEBUG 231 232# vt(4) drivers. 233device vt_vga # VGA 234device vt_efifb # EFI framebuffer 235device vt_vbefb # VBE framebuffer 236 237# Linear framebuffer driver for S3 VESA 1.2 cards. Works on top of VESA. 238device s3pci 239 240# 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support. This will create 241# the /dev/3dfx0 device to work with glide implementations. This should get 242# linked to /dev/3dfx and /dev/voodoo. Note that this is not the same as 243# the tdfx DRI module from XFree86 and is completely unrelated. 244# 245 246device tdfx # Enable 3Dfx Voodoo support 247 248# 249# ACPI support using the Intel ACPI Component Architecture reference 250# implementation. 251# 252# ACPI_DEBUG enables the use of the debug.acpi.level and debug.acpi.layer 253# kernel environment variables to select initial debugging levels for the 254# Intel ACPICA code. (Note that the Intel code must also have USE_DEBUGGER 255# defined when it is built). 256 257device acpi 258options ACPI_DEBUG 259 260# The cpufreq(4) driver provides support for non-ACPI CPU frequency control 261device cpufreq 262 263# 264# Network interfaces: 265# 266 267# axp: AMD EPYC integrated NIC 268# Requires the miibus module 269# bxe: Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet 270# adapters. 271# ice: Intel 800 Series Physical Function 272# Requires the ice_ddp module for full functionality 273# igc: Intel I225 2.5Gb Ethernet adapter 274# ipw: Intel PRO/Wireless 2100 IEEE 802.11 adapter 275# Requires the ipw firmware module 276# irdma: Intel 800 Series RDMA driver 277# Requires the ice module 278# iwi: Intel PRO/Wireless 2200BG/2225BG/2915ABG IEEE 802.11 adapters 279# Requires the iwi firmware module 280# iwn: Intel Wireless WiFi Link 1000/105/135/2000/4965/5000/6000/6050 abgn 281# 802.11 network adapters 282# Requires the iwn firmware module 283# mthca: Mellanox HCA InfiniBand 284# mlx4ib: Mellanox ConnectX HCA InfiniBand 285# mlx4en: Mellanox ConnectX HCA Ethernet 286# nfe: nVidia nForce MCP on-board Ethernet Networking (BSD open source) 287# qlxgb: QLogic 3200 and 8200 series 10 Gigabit Ethernet & CNA Adapter 288# qlxgbe: QLogic 8300 series 10 Gigabit Ethernet & CNA Adapter 289# qlxge: QLogic 8100 series 10 Gigabit Ethernet & CNA Adapter 290# qlnxe: Cavium QLogic 41000/45000 series 10/25/40/100 Gigabit Ethernet & CNA Adapter 291# sfxge: Solarflare SFC9000 family 10Gb Ethernet adapters 292# vmx: VMware VMXNET3 Ethernet (BSD open source) 293# wpi: Intel 3945ABG Wireless LAN controller 294# Requires the wpi firmware module 295 296device axp # AMD EPYC integrated NIC 297device bxe # Broadcom NetXtreme II BCM5771X/BCM578XX 10GbE 298device igc # Intel I225 2.5G Ethernet 299device ipw # Intel 2100 wireless NICs. 300device iwi # Intel 2200BG/2225BG/2915ABG wireless NICs. 301device iwn # Intel 4965/1000/5000/6000 wireless NICs. 302device ixl # Intel 700 Series Physical Function 303device iavf # Intel Adaptive Virtual Function 304device ice # Intel 800 Series Physical Function 305device ice_ddp # Intel 800 Series DDP Package 306device irdma # Intel 800 Series RDMA driver 307device mthca # Mellanox HCA InfiniBand 308device mlx4 # Shared code module between IB and Ethernet 309device mlx4ib # Mellanox ConnectX HCA InfiniBand 310device mlx4en # Mellanox ConnectX HCA Ethernet 311device nfe # nVidia nForce MCP on-board Ethernet 312device qlxgb # QLogic 3200/8200 Ethernet 313device qlxgbe # QLogic 8300 Ethernet 314device qlxge # QLogic 8100 Ethernet 315device qlnxe # QLogic 41000/45000 Ethernet 316device sfxge # Solarflare SFC9000 10Gb Ethernet 317device vmx # VMware VMXNET3 Ethernet 318device wpi # Intel 3945ABG wireless NICs. 319 320# IEEE 802.11 adapter firmware modules 321 322# Intel PRO/Wireless 2100 firmware: 323# ipwfw: BSS/IBSS/monitor mode firmware 324# ipwbssfw: BSS mode firmware 325# ipwibssfw: IBSS mode firmware 326# ipwmonitorfw: Monitor mode firmware 327# Intel PRO/Wireless 2200BG/2225BG/2915ABG firmware: 328# iwifw: BSS/IBSS/monitor mode firmware 329# iwibssfw: BSS mode firmware 330# iwiibssfw: IBSS mode firmware 331# iwimonitorfw: Monitor mode firmware 332# Intel Wireless WiFi Link 4965/1000/5000/6000 series firmware: 333# iwnfw: Single module to support all devices 334# iwn1000fw: Specific module for the 1000 only 335# iwn105fw: Specific module for the 105 only 336# iwn135fw: Specific module for the 135 only 337# iwn2000fw: Specific module for the 2000 only 338# iwn2030fw: Specific module for the 2030 only 339# iwn4965fw: Specific module for the 4965 only 340# iwn5000fw: Specific module for the 5000 only 341# iwn5150fw: Specific module for the 5150 only 342# iwn6000fw: Specific module for the 6000 only 343# iwn6000g2afw: Specific module for the 6000g2a only 344# iwn6000g2bfw: Specific module for the 6000g2b only 345# iwn6050fw: Specific module for the 6050 only 346# wpifw: Intel 3945ABG Wireless LAN Controller firmware 347 348device iwifw 349device iwibssfw 350device iwiibssfw 351device iwimonitorfw 352device ipwfw 353device ipwbssfw 354device ipwibssfw 355device ipwmonitorfw 356device iwnfw 357device iwn1000fw 358device iwn105fw 359device iwn135fw 360device iwn2000fw 361device iwn2030fw 362device iwn4965fw 363device iwn5000fw 364device iwn5150fw 365device iwn6000fw 366device iwn6000g2afw 367device iwn6000g2bfw 368device iwn6050fw 369device wpifw 370 371# 372# Non-Transparent Bridge (NTB) drivers 373# 374device if_ntb # Virtual NTB network interface 375device ntb_transport # NTB packet transport driver 376device ntb # NTB hardware interface 377device ntb_hw_amd # AMD NTB hardware driver 378device ntb_hw_intel # Intel NTB hardware driver 379device ntb_hw_plx # PLX NTB hardware driver 380 381# 382#XXX this stores pointers in a 32bit field that is defined by the hardware 383#device pst 384 385# 386# Areca 11xx and 12xx series of SATA II RAID controllers. 387# CAM is required. 388# 389device arcmsr # Areca SATA II RAID 390 391# 392# Microsemi smartpqi controllers. 393# These controllers have a SCSI-like interface, and require the 394# CAM infrastructure. 395# 396device smartpqi 397 398# 399# Adaptec FSA RAID controllers, including integrated DELL controllers, 400# the Dell PERC 2/QC and the HP NetRAID-4M 401device aac 402device aacp # SCSI Passthrough interface (optional, CAM required) 403 404# 405# Highpoint RocketRAID 27xx. 406device hpt27xx 407 408# 409# Highpoint RocketRAID 182x. 410device hptmv 411 412# 413# Highpoint DC7280 and R750. 414device hptnr 415 416# 417# Highpoint RocketRAID. Supports RR172x, RR222x, RR2240, RR232x, RR2340, 418# RR2210, RR174x, RR2522, RR231x, RR230x. 419device hptrr 420 421# 422# Highpoint RocketRaid 3xxx series SATA RAID 423device hptiop 424 425# 426# IBM (now Adaptec) ServeRAID controllers 427device ips 428 429# 430# Intel integrated Memory Controller (iMC) SMBus controller 431# Sandybridge-Xeon, Ivybridge-Xeon, Haswell-Xeon, Broadwell-Xeon 432device imcsmb 433 434# 435# Intel C600 (Patsburg) integrated SAS controller 436device isci 437options ISCI_LOGGING # enable debugging in isci HAL 438 439# 440# Intel Volume Management Device (VMD) support 441device vmd 442 443# 444# PMC-Sierra SAS/SATA controller 445device pmspcv 446 447# 448# Intel QuickAssist driver with OpenCrypto support 449# 450# Only for legacy Atom C2XXX chipsets. 451device qat_c2xxx 452 453# Linux KVM paravirtualization support 454device kvm_clock # KVM paravirtual clock driver 455 456# Google Virtual NIC 457device gve # Google Virtual NIC (gVNIC) driver 458 459# Microsoft Hyper-V enhancement support 460device hyperv # HyperV drivers 461device hvhid # HyperV HID device 462 463# Xen HVM Guest Optimizations 464options XENHVM # Xen HVM kernel infrastructure 465device xenefi # Xen EFI timer device 466device xenpci # Xen HVM Hypervisor services driver 467device xentimer # Xen x86 PV timer device 468 469##################################################################### 470 471# 472# Miscellaneous hardware: 473# 474# ipmi: Intelligent Platform Management Interface 475# pbio: Parallel (8255 PPI) basic I/O (mode 0) port (e.g. Advantech PCL-724) 476# smbios: DMI/SMBIOS entry point (requires EFIRT option) 477# vpd: Vital Product Data kernel interface 478# asmc: Apple System Management Controller 479# si: Specialix International SI/XIO or SX intelligent serial card 480# tpm: Trusted Platform Module 481 482# Notes on the Specialix SI/XIO driver: 483# The host card is memory, not IO mapped. 484# The Rev 1 host cards use a 64K chunk, on a 32K boundary. 485# The Rev 2 host cards use a 32K chunk, on a 32K boundary. 486# The cards can use an IRQ of 11, 12 or 15. 487 488device ipmi 489device pbio 490envvar hint.pbio.0.at="isa" 491envvar hint.pbio.0.port="0x360" 492device smbios 493device vpd 494device asmc 495device tpm 496device padlock_rng # VIA Padlock RNG 497device rdrand_rng # Intel Bull Mountain RNG 498device aesni # AES-NI OpenCrypto module 499device ossl # OpenSSL OpenCrypto module 500device ioat # Intel I/OAT DMA engine 501 502# 503# Laptop/Notebook options: 504# 505 506device backlight 507 508# 509# I2C Bus 510# 511 512# 513# Hardware watchdog timers: 514# 515# ichwd: Intel ICH watchdog timer 516# amdsbwd: AMD SB7xx watchdog timer 517# viawd: VIA south bridge watchdog timer 518# wbwd: Winbond watchdog timer 519# itwd: ITE Super I/O watchdog timer 520# 521device ichwd 522device amdsbwd 523device viawd 524device wbwd 525device itwd 526 527# 528# Temperature sensors: 529# 530# coretemp: on-die sensor on Intel Core and newer CPUs 531# amdtemp: on-die sensor on AMD K8/K10/K11 CPUs 532# 533device coretemp 534device amdtemp 535 536# 537# CPU control pseudo-device. Provides access to MSRs, CPUID info and 538# microcode update feature. 539# 540device cpuctl 541 542# 543# SuperIO driver. 544# 545device superio 546 547# 548# System Management Bus (SMB) 549# 550options ENABLE_ALART # Control alarm on Intel intpm driver 551 552# 553# AMD System Management Network (SMN) 554# 555device amdsmn 556 557# 558# Number of initial kernel page table pages used for early bootstrap. 559# This number should include enough pages to map the kernel and any 560# modules or other data loaded with the kernel by the loader. Each 561# page table page maps 2MB. 562# 563options NKPT=31 564 565# EFI Runtime Services support 566options EFIRT 567 568# EFI pseudo-device 569device efidev 570 571# EFI RTC 572device efirtc 573 574# 575# HID-over-I2C support 576# 577device iichid # HID-over-I2C support 578options IICHID_DEBUG # Enable HID-over-I2C debug messages 579options IICHID_SAMPLING # Workaround missing GPIO INTR support 580 581##################################################################### 582# ABI Emulation 583 584# Enable 32-bit runtime support for FreeBSD/i386 binaries. 585options COMPAT_FREEBSD32 586 587# Enable (32-bit) a.out binary support 588options COMPAT_AOUT 589 590##################################################################### 591# ZFS support 592 593# NB: This depends on crypto, cryptodev and ZSTDIO 594options ZFS 595 596##################################################################### 597# VM OPTIONS 598 599# KSTACK_PAGES is the number of memory pages to assign to the kernel 600# stack of each thread. 601 602options KSTACK_PAGES=5 603 604# Enable detailed accounting by the PV entry allocator. 605 606options PV_STATS 607 608##################################################################### 609 610# More undocumented options for linting. 611# Note that documenting these are not considered an affront. 612 613options KBDIO_DEBUG=2 614options KBD_MAXRETRY=4 615options KBD_MAXWAIT=6 616options KBD_RESETDELAY=201 617 618options PSM_DEBUG=1 619 620options TIMER_FREQ=((14318182+6)/12) 621 622options VM_KMEM_SIZE 623options VM_KMEM_SIZE_MAX 624options VM_KMEM_SIZE_SCALE 625 626# GCOV (code coverage) support 627 628options LINDEBUGFS 629options GCOV 630