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 ROUTE_MPATH # Multipath routing support
35 options TCP_OFFLOAD # TCP offload
36 options TCP_BLACKBOX # Enhanced TCP event logging
37 options TCP_HHOOK # hhook(9) framework for TCP
38 options TCP_RFC7413 # TCP Fast Open
39 options SCTP_SUPPORT # Allow kldload of SCTP
40 options FFS # Berkeley Fast Filesystem
41 options SOFTUPDATES # Enable FFS soft updates support
42 options UFS_ACL # Support for access control lists
43 options UFS_DIRHASH # Improve performance on big directories
44 options UFS_GJOURNAL # Enable gjournal-based UFS journaling
45 options QUOTA # Enable disk quotas for UFS
46 options MD_ROOT # MD is a potential root device
47 options NFSCL # Network Filesystem Client
48 options NFSD # Network Filesystem Server
49 options NFSLOCKD # Network Lock Manager
50 options NFS_ROOT # NFS usable as /, requires NFSCL
51 options MSDOSFS # MSDOS Filesystem
52 options CD9660 # ISO 9660 Filesystem
53 options PROCFS # Process filesystem (requires PSEUDOFS)
54 options PSEUDOFS # Pseudo-filesystem framework
55 options TMPFS # Efficient memory filesystem
56 options GEOM_RAID # Soft RAID functionality.
57 options GEOM_LABEL # Provides labelization
58 options EFIRT # EFI Runtime Services support
59 options COMPAT_FREEBSD32 # Compatible with i386 binaries
60 options COMPAT_FREEBSD4 # Compatible with FreeBSD4
61 options COMPAT_FREEBSD5 # Compatible with FreeBSD5
62 options COMPAT_FREEBSD6 # Compatible with FreeBSD6
63 options COMPAT_FREEBSD7 # Compatible with FreeBSD7
64 options COMPAT_FREEBSD9 # Compatible with FreeBSD9
65 options COMPAT_FREEBSD10 # Compatible with FreeBSD10
66 options COMPAT_FREEBSD11 # Compatible with FreeBSD11
67 options COMPAT_FREEBSD12 # Compatible with FreeBSD12
68 options SCSI_DELAY=5000 # Delay (in ms) before probing SCSI
69 options KTRACE # ktrace(1) support
70 options STACK # stack(9) support
71 options SYSVSHM # SYSV-style shared memory
72 options SYSVMSG # SYSV-style message queues
73 options SYSVSEM # SYSV-style semaphores
74 options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
75 options PRINTF_BUFR_SIZE=128 # Prevent printf output being interspersed.
76 options KBD_INSTALL_CDEV # install a CDEV entry in /dev
77 options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4)
78 options AUDIT # Security event auditing
79 options CAPABILITY_MODE # Capsicum capability mode
80 options CAPABILITIES # Capsicum capabilities
81 options MAC # TrustedBSD MAC Framework
82 options KDTRACE_FRAME # Ensure frames are compiled in
83 options KDTRACE_HOOKS # Kernel DTrace hooks
84 options DDB_CTF # Kernel ELF linker loads CTF data
85 options INCLUDE_CONFIG_FILE # Include this file in kernel
86 options RACCT # Resource accounting framework
87 options RACCT_DEFAULT_TO_DISABLED # Set kern.racct.enable=0 by default
88 options RCTL # Resource limits
90 # Debugging support. Always need this:
91 options KDB # Enable kernel debugger support.
92 options KDB_TRACE # Print a stack trace for a panic.
93 # For full debugger support use (turn off in stable branch):
94 options BUF_TRACKING # Track buffer history
95 options DDB # Support DDB.
96 options FULL_BUF_TRACKING # Track more buffer history
97 options GDB # Support remote GDB.
98 options DEADLKRES # Enable the deadlock resolver
99 options INVARIANTS # Enable calls of extra sanity checking
100 options INVARIANT_SUPPORT # Extra sanity checks of internal structures, required by INVARIANTS
101 options QUEUE_MACRO_DEBUG_TRASH # Trash queue(2) internal pointers on invalidation
102 options WITNESS # Enable checks to detect deadlocks and cycles
103 options WITNESS_SKIPSPIN # Don't run witness on spinlocks for speed
104 options MALLOC_DEBUG_MAXZONES=8 # Separate malloc(9) zones
105 options VERBOSE_SYSINIT=0 # Support debug.verbose_sysinit, off by default
108 #options COVERAGE # Generic kernel coverage. Used by KCOV
109 #options KCOV # Kernel Coverage Sanitizer
110 # Warning: KUBSAN can result in a kernel too large for loader to load
111 #options KUBSAN # Kernel Undefined Behavior Sanitizer
112 #options KCSAN # Kernel Concurrency Sanitizer
114 # Kernel dump features.
115 options EKCD # Support for encrypted kernel dumps
116 options GZIO # gzip-compressed kernel and user dumps
117 options ZSTDIO # zstd-compressed kernel and user dumps
118 options DEBUGNET # debugnet networking
119 options NETDUMP # netdump(4) client support
120 options NETGDB # netgdb(4) client support
122 # Make an SMP-capable kernel by default
123 options SMP # Symmetric MultiProcessor Kernel
124 options EARLY_AP_STARTUP
126 # CPU frequency control
133 options PCI_HP # PCI-Express native HotPlug
134 options PCI_IOV # PCI SR-IOV support
140 device ahci # AHCI-compatible SATA controllers
141 device ata # Legacy ATA/SATA controllers
142 device mvs # Marvell 88SX50XX/88SX60XX/88SX70XX/SoC SATA
143 device siis # SiliconImage SiI3124/SiI3132/SiI3531 SATA
146 device ahc # AHA2940 and onboard AIC7xxx devices
147 device ahd # AHA39320/29320 and onboard AIC79xx devices
148 device esp # AMD Am53C974 (Tekram DC-390(T))
149 device hptiop # Highpoint RocketRaid 3xxx series
150 device isp # Qlogic family
151 #device ispfw # Firmware for QLogic HBAs- normally a module
152 device mpt # LSI-Logic MPT-Fusion
153 device mps # LSI-Logic MPT-Fusion 2
154 device mpr # LSI-Logic MPT-Fusion 3
155 device sym # NCR/Symbios Logic
156 device isci # Intel C600 SAS controller
157 device ocs_fc # Emulex FC adapters
158 device pvscsi # VMware PVSCSI
160 # ATA/SCSI peripherals
161 device scbus # SCSI bus (required for ATA/SCSI)
162 device ch # SCSI media changers
163 device da # Direct Access (disks)
164 device sa # Sequential Access (tape etc)
166 device pass # Passthrough device (direct ATA/SCSI access)
167 device ses # Enclosure Services (SES and SAF-TE)
168 #device ctl # CAM Target Layer
170 # RAID controllers interfaced to the SCSI subsystem
171 device amr # AMI MegaRAID
172 device arcmsr # Areca SATA II RAID
173 device ciss # Compaq Smart RAID 5*
174 device iir # Intel Integrated RAID
175 device ips # IBM (Adaptec) ServeRAID
176 device mly # Mylex AcceleRAID/eXtremeRAID
177 device twa # 3ware 9000 series PATA/SATA RAID
178 device smartpqi # Microsemi smartpqi driver
179 device tws # LSI 3ware 9750 SATA+SAS 6Gb/s RAID controller
182 device aac # Adaptec FSA RAID
183 device aacp # SCSI passthrough for aac (requires CAM)
184 device aacraid # Adaptec by PMC RAID
185 device ida # Compaq Smart RAID
186 device mfi # LSI MegaRAID SAS
187 device mlx # Mylex DAC960 family
188 device mrsas # LSI/Avago MegaRAID SAS/SATA, 6Gb/s and 12Gb/s
189 device pmspcv # PMC-Sierra SAS/SATA Controller driver
190 #XXX pointer/int warnings
191 #device pst # Promise Supertrak SX6000
192 device twe # 3ware ATA RAID
194 # NVM Express (NVMe) support
195 device nvme # base NVMe driver
196 device nvd # expose NVMe namespaces as disks, depends on nvme
198 # Intel Volume Management Device (VMD) support
199 device vmd # base VMD device
200 device vmd_bus # bus for VMD children
202 # atkbdc0 controls both the keyboard and the PS/2 mouse
203 device atkbdc # AT keyboard controller
204 device atkbd # AT keyboard
205 device psm # PS/2 mouse
207 device kbdmux # keyboard multiplexer
209 device vga # VGA video card driver
210 options VESA # Add support for VESA BIOS Extensions (VBE)
212 device splash # Splash screen and screen saver support
214 # syscons is the default console driver, resembling an SCO console
216 options SC_PIXEL_MODE # add support for the raster text mode
218 # vt is the new video console driver
224 device agp # support several AGP chipsets
226 # PCCARD (PCMCIA) support
227 # PCMCIA and cardbus bridge support
228 device cbb # cardbus (yenta) bridge
229 device pccard # PC Card (16-bit) bus
230 device cardbus # CardBus (32-bit) bus
233 device uart # Generic UART driver
237 device ppbus # Parallel port bus (required)
239 device ppi # Parallel port interface device
240 #device vpo # Requires scbus and da
242 device puc # Multi I/O cards and multi-channel UARTs
244 # PCI/PCI-X/PCIe Ethernet NICs that use iflib infrastructure
246 device em # Intel PRO/1000 Gigabit Ethernet Family
247 device ix # Intel PRO/10GbE PCIE PF Ethernet
248 device ixv # Intel PRO/10GbE PCIE VF Ethernet
249 device ixl # Intel 700 Series Physical Function
250 device iavf # Intel Adaptive Virtual Function
251 device ice # Intel 800 Series Physical Function
252 device vmx # VMware VMXNET3 Ethernet
253 device axp # AMD EPYC integrated NIC
256 device bxe # Broadcom NetXtreme II BCM5771X/BCM578XX 10GbE
257 device le # AMD Am7900 LANCE and Am79C9xx PCnet
258 device ti # Alteon Networks Tigon I/II gigabit Ethernet
260 # PCI Ethernet NICs that use the common MII bus controller code.
261 # NOTE: Be sure to keep the 'device miibus' line in order to use these NICs!
262 device miibus # MII bus support
263 device ae # Attansic/Atheros L2 FastEthernet
264 device age # Attansic/Atheros L1 Gigabit Ethernet
265 device alc # Atheros AR8131/AR8132 Ethernet
266 device ale # Atheros AR8121/AR8113/AR8114 Ethernet
267 device bce # Broadcom BCM5706/BCM5708 Gigabit Ethernet
268 device bfe # Broadcom BCM440x 10/100 Ethernet
269 device bge # Broadcom BCM570xx Gigabit Ethernet
270 device cas # Sun Cassini/Cassini+ and NS DP83065 Saturn
271 device dc # DEC/Intel 21143 and various workalikes
272 device et # Agere ET1310 10/100/Gigabit Ethernet
273 device fxp # Intel EtherExpress PRO/100B (82557, 82558)
274 device gem # Sun GEM/Sun ERI/Apple GMAC
275 device jme # JMicron JMC250 Gigabit/JMC260 Fast Ethernet
276 device lge # Level 1 LXT1001 gigabit Ethernet
277 device msk # Marvell/SysKonnect Yukon II Gigabit Ethernet
278 device nfe # nVidia nForce MCP on-board Ethernet
279 device nge # NatSemi DP83820 gigabit Ethernet
280 device re # RealTek 8139C+/8169/8169S/8110S
281 device rl # RealTek 8129/8139
282 device sge # Silicon Integrated Systems SiS190/191
283 device sis # Silicon Integrated Systems SiS 900/SiS 7016
284 device sk # SysKonnect SK-984x & SK-982x gigabit Ethernet
285 device ste # Sundance ST201 (D-Link DFE-550TX)
286 device stge # Sundance/Tamarack TC9021 gigabit Ethernet
287 device vge # VIA VT612x gigabit Ethernet
288 device vr # VIA Rhine, Rhine II
289 device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
292 device wlan # 802.11 support
293 options IEEE80211_DEBUG # enable debug msgs
294 options IEEE80211_SUPPORT_MESH # enable 802.11s draft support
295 device wlan_wep # 802.11 WEP support
296 device wlan_ccmp # 802.11 CCMP support
297 device wlan_tkip # 802.11 TKIP support
298 device wlan_amrr # AMRR transmit rate control algorithm
299 device an # Aironet 4500/4800 802.11 wireless NICs.
300 device ath # Atheros NICs
301 device ath_pci # Atheros pci/cardbus glue
302 device ath_hal # pci/cardbus chip support
303 options AH_AR5416_INTERRUPT_MITIGATION # AR5416 interrupt mitigation
304 options ATH_ENABLE_11N # Enable 802.11n support for AR5416 and later
305 device ath_rate_sample # SampleRate tx rate control for ath
306 #device bwi # Broadcom BCM430x/BCM431x wireless NICs.
307 #device bwn # Broadcom BCM43xx wireless NICs.
308 device ipw # Intel 2100 wireless NICs.
309 device iwi # Intel 2200BG/2225BG/2915ABG wireless NICs.
310 device iwn # Intel 4965/1000/5000/6000 wireless NICs.
311 device malo # Marvell Libertas wireless NICs.
312 device mwl # Marvell 88W8363 802.11n wireless NICs.
313 device ral # Ralink Technology RT2500 wireless NICs.
314 device wi # WaveLAN/Intersil/Symbol 802.11 wireless NICs.
315 device wpi # Intel 3945ABG wireless NICs.
318 device crypto # core crypto support
319 device loop # Network loopback
320 device padlock_rng # VIA Padlock RNG
321 device rdrand_rng # Intel Bull Mountain RNG
322 device ether # Ethernet support
323 device vlan # 802.1Q VLAN support
324 device tuntap # Packet tunnel.
325 device md # Memory "disks"
326 device gif # IPv6 and IPv4 tunneling
327 device firmware # firmware assist module
329 # The `bpf' device enables the Berkeley Packet Filter.
330 # Be aware of the administrative consequences of enabling this!
331 # Note that 'bpf' is required for DHCP.
332 device bpf # Berkeley packet filter
335 options USB_DEBUG # enable debug msgs
336 device uhci # UHCI PCI->USB interface
337 device ohci # OHCI PCI->USB interface
338 device ehci # EHCI PCI->USB interface (USB 2.0)
339 device xhci # XHCI PCI->USB interface (USB 3.0)
340 device usb # USB Bus (required)
341 device ukbd # Keyboard
342 device umass # Disks/Mass storage - Requires scbus and da
345 device sound # Generic sound driver (required)
346 device snd_cmi # CMedia CMI8338/CMI8738
347 device snd_csa # Crystal Semiconductor CS461x/428x
348 device snd_emu10kx # Creative SoundBlaster Live! and Audigy
349 device snd_es137x # Ensoniq AudioPCI ES137x
350 device snd_hda # Intel High Definition Audio
351 device snd_ich # Intel, NVidia and other ICH AC'97 Audio
352 device snd_via8233 # VIA VT8233x Audio
355 device mmc # MMC/SD bus
356 device mmcsd # MMC/SD memory card
357 device sdhci # Generic PCI SD Host Controller
358 device rtsx # Realtek SD card reader
361 device virtio # Generic VirtIO bus (required)
362 device virtio_pci # VirtIO PCI device
363 device vtnet # VirtIO Ethernet device
364 device virtio_blk # VirtIO Block device
365 device virtio_scsi # VirtIO SCSI device
366 device virtio_balloon # VirtIO Memory Balloon device
368 # HyperV drivers and enhancement support
369 device hyperv # HyperV drivers
371 # Xen HVM Guest Optimizations
372 # NOTE: XENHVM depends on xenpci. They must be added or removed together.
373 options XENHVM # Xen HVM kernel infrastructure
374 device xenpci # Xen HVM Hypervisor services driver
376 # Netmap provides direct access to TX/RX rings on supported NICs
377 device netmap # netmap(4) support
380 options EVDEV_SUPPORT # evdev support in legacy drivers
381 device evdev # input event device support
382 device uinput # install /dev/uinput cdev
385 options HID_DEBUG # enable debug msgs
386 device hid # Generic HID support
387 options IICHID_SAMPLING # Workaround missing GPIO INTR support
388 #device usbhid # USB transport support.
389 #device hidbus # HID bus (required by usbhid/iichid)
390 #options USBHID_ENABLED # Prefer usbhid to other USB drivers