2 # GENERIC -- Generic kernel configuration file for FreeBSD/amd64
4 # For more information on this file, please read the config(5) manual page,
5 # and/or the handbook section on Kernel Configuration Files:
7 # https://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html
9 # The handbook is also available locally in /usr/share/doc/handbook
10 # if you've installed the doc distribution, otherwise always see the
11 # FreeBSD World Wide Web server (https://www.FreeBSD.org/) for the
14 # An exhaustive list of options and more detailed explanations of the
15 # device lines is also present in the ../../conf/NOTES and NOTES files.
16 # If you are in doubt as to the purpose or necessity of a line, check first
24 makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols
25 makeoptions WITH_CTF=1 # Run ctfconvert(1) for DTrace support
27 options SCHED_ULE # ULE scheduler
28 options NUMA # Non-Uniform Memory Architecture support
29 options PREEMPTION # Enable kernel thread preemption
30 options VIMAGE # Subsystem virtualization, e.g. VNET
31 options INET # InterNETworking
32 options INET6 # IPv6 communications protocols
33 options IPSEC_SUPPORT # Allow kldload of ipsec and tcpmd5
34 options TCP_OFFLOAD # TCP offload
35 options TCP_BLACKBOX # Enhanced TCP event logging
36 options TCP_HHOOK # hhook(9) framework for TCP
37 options TCP_RFC7413 # TCP Fast Open
38 options SCTP # Stream Control Transmission Protocol
39 options FFS # Berkeley Fast Filesystem
40 options SOFTUPDATES # Enable FFS soft updates support
41 options UFS_ACL # Support for access control lists
42 options UFS_DIRHASH # Improve performance on big directories
43 options UFS_GJOURNAL # Enable gjournal-based UFS journaling
44 options QUOTA # Enable disk quotas for UFS
45 options MD_ROOT # MD is a potential root device
46 options NFSCL # Network Filesystem Client
47 options NFSD # Network Filesystem Server
48 options NFSLOCKD # Network Lock Manager
49 options NFS_ROOT # NFS usable as /, requires NFSCL
50 options MSDOSFS # MSDOS Filesystem
51 options CD9660 # ISO 9660 Filesystem
52 options PROCFS # Process filesystem (requires PSEUDOFS)
53 options PSEUDOFS # Pseudo-filesystem framework
54 options GEOM_RAID # Soft RAID functionality.
55 options GEOM_LABEL # Provides labelization
56 options EFIRT # EFI Runtime Services support
57 options COMPAT_FREEBSD32 # Compatible with i386 binaries
58 options COMPAT_FREEBSD4 # Compatible with FreeBSD4
59 options COMPAT_FREEBSD5 # Compatible with FreeBSD5
60 options COMPAT_FREEBSD6 # Compatible with FreeBSD6
61 options COMPAT_FREEBSD7 # Compatible with FreeBSD7
62 options COMPAT_FREEBSD9 # Compatible with FreeBSD9
63 options COMPAT_FREEBSD10 # Compatible with FreeBSD10
64 options COMPAT_FREEBSD11 # Compatible with FreeBSD11
65 options COMPAT_FREEBSD12 # Compatible with FreeBSD12
66 options SCSI_DELAY=5000 # Delay (in ms) before probing SCSI
67 options KTRACE # ktrace(1) support
68 options STACK # stack(9) support
69 options SYSVSHM # SYSV-style shared memory
70 options SYSVMSG # SYSV-style message queues
71 options SYSVSEM # SYSV-style semaphores
72 options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
73 options PRINTF_BUFR_SIZE=128 # Prevent printf output being interspersed.
74 options KBD_INSTALL_CDEV # install a CDEV entry in /dev
75 options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4)
76 options AUDIT # Security event auditing
77 options CAPABILITY_MODE # Capsicum capability mode
78 options CAPABILITIES # Capsicum capabilities
79 options MAC # TrustedBSD MAC Framework
80 options KDTRACE_FRAME # Ensure frames are compiled in
81 options KDTRACE_HOOKS # Kernel DTrace hooks
82 options DDB_CTF # Kernel ELF linker loads CTF data
83 options INCLUDE_CONFIG_FILE # Include this file in kernel
84 options RACCT # Resource accounting framework
85 options RACCT_DEFAULT_TO_DISABLED # Set kern.racct.enable=0 by default
86 options RCTL # Resource limits
88 # Debugging support. Always need this:
89 options KDB # Enable kernel debugger support.
90 options KDB_TRACE # Print a stack trace for a panic.
91 # For full debugger support use (turn off in stable branch):
92 options BUF_TRACKING # Track buffer history
93 options DDB # Support DDB.
94 options FULL_BUF_TRACKING # Track more buffer history
95 options GDB # Support remote GDB.
96 options DEADLKRES # Enable the deadlock resolver
97 options INVARIANTS # Enable calls of extra sanity checking
98 options INVARIANT_SUPPORT # Extra sanity checks of internal structures, required by INVARIANTS
99 options WITNESS # Enable checks to detect deadlocks and cycles
100 options WITNESS_SKIPSPIN # Don't run witness on spinlocks for speed
101 options MALLOC_DEBUG_MAXZONES=8 # Separate malloc(9) zones
102 options VERBOSE_SYSINIT=0 # Support debug.verbose_sysinit, off by default
105 #options COVERAGE # Generic kernel coverage. Used by KCOV
106 #options KCOV # Kernel Coverage Sanitizer
107 # Warning: KUBSAN can result in a kernel too large for loader to load
108 #options KUBSAN # Kernel Undefined Behavior Sanitizer
110 # Kernel dump features.
111 options EKCD # Support for encrypted kernel dumps
112 options GZIO # gzip-compressed kernel and user dumps
113 options ZSTDIO # zstd-compressed kernel and user dumps
114 options DEBUGNET # debugnet networking
115 options NETDUMP # netdump(4) client support
116 options NETGDB # netgdb(4) client support
118 # Make an SMP-capable kernel by default
119 options SMP # Symmetric MultiProcessor Kernel
120 options EARLY_AP_STARTUP
122 # CPU frequency control
129 options PCI_HP # PCI-Express native HotPlug
130 options PCI_IOV # PCI SR-IOV support
136 device ahci # AHCI-compatible SATA controllers
137 device ata # Legacy ATA/SATA controllers
138 device mvs # Marvell 88SX50XX/88SX60XX/88SX70XX/SoC SATA
139 device siis # SiliconImage SiI3124/SiI3132/SiI3531 SATA
142 device ahc # AHA2940 and onboard AIC7xxx devices
143 device ahd # AHA39320/29320 and onboard AIC79xx devices
144 device esp # AMD Am53C974 (Tekram DC-390(T))
145 device hptiop # Highpoint RocketRaid 3xxx series
146 device isp # Qlogic family
147 #device ispfw # Firmware for QLogic HBAs- normally a module
148 device mpt # LSI-Logic MPT-Fusion
149 device mps # LSI-Logic MPT-Fusion 2
150 device mpr # LSI-Logic MPT-Fusion 3
151 device sym # NCR/Symbios Logic
152 device trm # Tekram DC395U/UW/F DC315U adapters
153 device isci # Intel C600 SAS controller
154 device ocs_fc # Emulex FC adapters
156 # ATA/SCSI peripherals
157 device scbus # SCSI bus (required for ATA/SCSI)
158 device ch # SCSI media changers
159 device da # Direct Access (disks)
160 device sa # Sequential Access (tape etc)
162 device pass # Passthrough device (direct ATA/SCSI access)
163 device ses # Enclosure Services (SES and SAF-TE)
164 #device ctl # CAM Target Layer
166 # RAID controllers interfaced to the SCSI subsystem
167 device amr # AMI MegaRAID
168 device arcmsr # Areca SATA II RAID
169 device ciss # Compaq Smart RAID 5*
170 device iir # Intel Integrated RAID
171 device ips # IBM (Adaptec) ServeRAID
172 device mly # Mylex AcceleRAID/eXtremeRAID
173 device twa # 3ware 9000 series PATA/SATA RAID
174 device smartpqi # Microsemi smartpqi driver
175 device tws # LSI 3ware 9750 SATA+SAS 6Gb/s RAID controller
178 device aac # Adaptec FSA RAID
179 device aacp # SCSI passthrough for aac (requires CAM)
180 device aacraid # Adaptec by PMC RAID
181 device ida # Compaq Smart RAID
182 device mfi # LSI MegaRAID SAS
183 device mlx # Mylex DAC960 family
184 device mrsas # LSI/Avago MegaRAID SAS/SATA, 6Gb/s and 12Gb/s
185 device pmspcv # PMC-Sierra SAS/SATA Controller driver
186 #XXX pointer/int warnings
187 #device pst # Promise Supertrak SX6000
188 device twe # 3ware ATA RAID
190 # NVM Express (NVMe) support
191 device nvme # base NVMe driver
192 device nvd # expose NVMe namespaces as disks, depends on nvme
194 # Intel Volume Management Device (VMD) support
195 device vmd # base VMD device
196 device vmd_bus # bus for VMD children
198 # atkbdc0 controls both the keyboard and the PS/2 mouse
199 device atkbdc # AT keyboard controller
200 device atkbd # AT keyboard
201 device psm # PS/2 mouse
203 device kbdmux # keyboard multiplexer
205 device vga # VGA video card driver
206 options VESA # Add support for VESA BIOS Extensions (VBE)
208 device splash # Splash screen and screen saver support
210 # syscons is the default console driver, resembling an SCO console
212 options SC_PIXEL_MODE # add support for the raster text mode
214 # vt is the new video console driver
219 device agp # support several AGP chipsets
221 # PCCARD (PCMCIA) support
222 # PCMCIA and cardbus bridge support
223 device cbb # cardbus (yenta) bridge
224 device pccard # PC Card (16-bit) bus
225 device cardbus # CardBus (32-bit) bus
228 device uart # Generic UART driver
232 device ppbus # Parallel port bus (required)
234 device ppi # Parallel port interface device
235 #device vpo # Requires scbus and da
237 device puc # Multi I/O cards and multi-channel UARTs
239 # PCI/PCI-X/PCIe Ethernet NICs that use iflib infrastructure
241 device em # Intel PRO/1000 Gigabit Ethernet Family
242 device ix # Intel PRO/10GbE PCIE PF Ethernet
243 device ixv # Intel PRO/10GbE PCIE VF Ethernet
244 device ixl # Intel 700 Series Physical Function
245 device iavf # Intel Adaptive Virtual Function
246 device vmx # VMware VMXNET3 Ethernet
249 device bxe # Broadcom NetXtreme II BCM5771X/BCM578XX 10GbE
250 device le # AMD Am7900 LANCE and Am79C9xx PCnet
251 device ti # Alteon Networks Tigon I/II gigabit Ethernet
253 # PCI Ethernet NICs that use the common MII bus controller code.
254 # NOTE: Be sure to keep the 'device miibus' line in order to use these NICs!
255 device miibus # MII bus support
256 device ae # Attansic/Atheros L2 FastEthernet
257 device age # Attansic/Atheros L1 Gigabit Ethernet
258 device alc # Atheros AR8131/AR8132 Ethernet
259 device ale # Atheros AR8121/AR8113/AR8114 Ethernet
260 device bce # Broadcom BCM5706/BCM5708 Gigabit Ethernet
261 device bfe # Broadcom BCM440x 10/100 Ethernet
262 device bge # Broadcom BCM570xx Gigabit Ethernet
263 device cas # Sun Cassini/Cassini+ and NS DP83065 Saturn
264 device dc # DEC/Intel 21143 and various workalikes
265 device et # Agere ET1310 10/100/Gigabit Ethernet
266 device fxp # Intel EtherExpress PRO/100B (82557, 82558)
267 device gem # Sun GEM/Sun ERI/Apple GMAC
268 device hme # Sun HME (Happy Meal Ethernet)
269 device jme # JMicron JMC250 Gigabit/JMC260 Fast Ethernet
270 device lge # Level 1 LXT1001 gigabit Ethernet
271 device msk # Marvell/SysKonnect Yukon II Gigabit Ethernet
272 device nfe # nVidia nForce MCP on-board Ethernet
273 device nge # NatSemi DP83820 gigabit Ethernet
274 device re # RealTek 8139C+/8169/8169S/8110S
275 device rl # RealTek 8129/8139
276 device sge # Silicon Integrated Systems SiS190/191
277 device sis # Silicon Integrated Systems SiS 900/SiS 7016
278 device sk # SysKonnect SK-984x & SK-982x gigabit Ethernet
279 device ste # Sundance ST201 (D-Link DFE-550TX)
280 device stge # Sundance/Tamarack TC9021 gigabit Ethernet
281 device vge # VIA VT612x gigabit Ethernet
282 device vr # VIA Rhine, Rhine II
283 device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
286 device wlan # 802.11 support
287 options IEEE80211_DEBUG # enable debug msgs
288 options IEEE80211_SUPPORT_MESH # enable 802.11s draft support
289 device wlan_wep # 802.11 WEP support
290 device wlan_ccmp # 802.11 CCMP support
291 device wlan_tkip # 802.11 TKIP support
292 device wlan_amrr # AMRR transmit rate control algorithm
293 device an # Aironet 4500/4800 802.11 wireless NICs.
294 device ath # Atheros NICs
295 device ath_pci # Atheros pci/cardbus glue
296 device ath_hal # pci/cardbus chip support
297 options AH_AR5416_INTERRUPT_MITIGATION # AR5416 interrupt mitigation
298 options ATH_ENABLE_11N # Enable 802.11n support for AR5416 and later
299 device ath_rate_sample # SampleRate tx rate control for ath
300 #device bwi # Broadcom BCM430x/BCM431x wireless NICs.
301 #device bwn # Broadcom BCM43xx wireless NICs.
302 device ipw # Intel 2100 wireless NICs.
303 device iwi # Intel 2200BG/2225BG/2915ABG wireless NICs.
304 device iwn # Intel 4965/1000/5000/6000 wireless NICs.
305 device malo # Marvell Libertas wireless NICs.
306 device mwl # Marvell 88W8363 802.11n wireless NICs.
307 device ral # Ralink Technology RT2500 wireless NICs.
308 device wi # WaveLAN/Intersil/Symbol 802.11 wireless NICs.
309 device wpi # Intel 3945ABG wireless NICs.
312 device crypto # core crypto support
313 device loop # Network loopback
314 device padlock_rng # VIA Padlock RNG
315 device rdrand_rng # Intel Bull Mountain RNG
316 device ether # Ethernet support
317 device vlan # 802.1Q VLAN support
318 device tuntap # Packet tunnel.
319 device md # Memory "disks"
320 device gif # IPv6 and IPv4 tunneling
321 device firmware # firmware assist module
323 # The `bpf' device enables the Berkeley Packet Filter.
324 # Be aware of the administrative consequences of enabling this!
325 # Note that 'bpf' is required for DHCP.
326 device bpf # Berkeley packet filter
329 options USB_DEBUG # enable debug msgs
330 device uhci # UHCI PCI->USB interface
331 device ohci # OHCI PCI->USB interface
332 device ehci # EHCI PCI->USB interface (USB 2.0)
333 device xhci # XHCI PCI->USB interface (USB 3.0)
334 device usb # USB Bus (required)
335 device ukbd # Keyboard
336 device umass # Disks/Mass storage - Requires scbus and da
339 device sound # Generic sound driver (required)
340 device snd_cmi # CMedia CMI8338/CMI8738
341 device snd_csa # Crystal Semiconductor CS461x/428x
342 device snd_emu10kx # Creative SoundBlaster Live! and Audigy
343 device snd_es137x # Ensoniq AudioPCI ES137x
344 device snd_hda # Intel High Definition Audio
345 device snd_ich # Intel, NVidia and other ICH AC'97 Audio
346 device snd_via8233 # VIA VT8233x Audio
349 device mmc # MMC/SD bus
350 device mmcsd # MMC/SD memory card
351 device sdhci # Generic PCI SD Host Controller
354 device virtio # Generic VirtIO bus (required)
355 device virtio_pci # VirtIO PCI device
356 device vtnet # VirtIO Ethernet device
357 device virtio_blk # VirtIO Block device
358 device virtio_scsi # VirtIO SCSI device
359 device virtio_balloon # VirtIO Memory Balloon device
361 # HyperV drivers and enhancement support
362 device hyperv # HyperV drivers
364 # Xen HVM Guest Optimizations
365 # NOTE: XENHVM depends on xenpci. They must be added or removed together.
366 options XENHVM # Xen HVM kernel infrastructure
367 device xenpci # Xen HVM Hypervisor services driver
369 # Netmap provides direct access to TX/RX rings on supported NICs
370 device netmap # netmap(4) support
373 options EVDEV_SUPPORT # evdev support in legacy drivers
374 device evdev # input event device support
375 device uinput # install /dev/uinput cdev