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