#
# MINIMAL -- Mostly Minimal kernel configuration file for FreeBSD/amd64
#
# Many definitions of minimal are possible. The one this file follows is
# GENERIC, minus all functionality that can be replaced by loading kernel
# modules.
#
# Exceptions:
# o While UFS is buildable as a module, the current module lacks
# some features (ACL, GJOURNAL) that GENERIC includes.
# o acpi as a module has been reported flakey and not well tested, so
# is included in the kernel.
# o (non-loaded) random is included due to uncertainty...
# o Many networking things are included
#
# For now, please run changes to these list past imp@freebsd.org
#
# For more information on this file, please read the config(5) manual page,
# and/or the handbook section on Kernel Configuration Files:
#
# https://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html
#
# The handbook is also available locally in /usr/share/doc/handbook
# if you've installed the doc distribution, otherwise always see the
# FreeBSD World Wide Web server (https://www.FreeBSD.org/) for the
# latest information.
#
# An exhaustive list of options and more detailed explanations of the
# device lines is also present in the ../../conf/NOTES and NOTES files.
# If you are in doubt as to the purpose or necessity of a line, check first
# in NOTES.
#
# $FreeBSD$
cpu HAMMER
ident MINIMAL
makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols
makeoptions WITH_CTF=1 # Run ctfconvert(1) for DTrace support
options SCHED_ULE # ULE scheduler
options NUMA # Non-Uniform Memory Architecture support
options PREEMPTION # Enable kernel thread preemption
options INET # InterNETworking
options INET6 # IPv6 communications protocols
options TCP_OFFLOAD # TCP offload
options SCTP_SUPPORT # Allow kldload of SCTP
options FFS # Berkeley Fast Filesystem
options SOFTUPDATES # Enable FFS soft updates support
options UFS_ACL # Support for access control lists
options UFS_DIRHASH # Improve performance on big directories
options UFS_GJOURNAL # Enable gjournal-based UFS journaling
options QUOTA # Enable disk quotas for UFS
options MD_ROOT # MD is a potential root device
options COMPAT_FREEBSD32 # Compatible with i386 binaries
options COMPAT_FREEBSD4 # Compatible with FreeBSD4
options COMPAT_FREEBSD5 # Compatible with FreeBSD5
options COMPAT_FREEBSD6 # Compatible with FreeBSD6
options COMPAT_FREEBSD7 # Compatible with FreeBSD7
options COMPAT_FREEBSD9 # Compatible with FreeBSD9
options COMPAT_FREEBSD10 # Compatible with FreeBSD10
options COMPAT_FREEBSD11 # Compatible with FreeBSD11
options COMPAT_FREEBSD12 # Compatible with FreeBSD12
options SCSI_DELAY=5000 # Delay (in ms) before probing SCSI
options KTRACE # ktrace(1) support
options STACK # stack(9) support
options SYSVSHM # SYSV-style shared memory
options SYSVMSG # SYSV-style message queues
options SYSVSEM # SYSV-style semaphores
options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
options PRINTF_BUFR_SIZE=128 # Prevent printf output being interspersed.
options KBD_INSTALL_CDEV # install a CDEV entry in /dev
options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4)
options AUDIT # Security event auditing
options CAPABILITY_MODE # Capsicum capability mode
options CAPABILITIES # Capsicum capabilities
options MAC # TrustedBSD MAC Framework
options KDTRACE_FRAME # Ensure frames are compiled in
options KDTRACE_HOOKS # Kernel DTrace hooks
options DDB_CTF # Kernel ELF linker loads CTF data
options INCLUDE_CONFIG_FILE # Include this file in kernel
# Debugging support. Always need this:
options KDB # Enable kernel debugger support.
options KDB_TRACE # Print a stack trace for a panic.
# For full debugger support use (turn off in stable branch):
options DDB # Support DDB.
options GDB # Support remote GDB.
options DEADLKRES # Enable the deadlock resolver
options INVARIANTS # Enable calls of extra sanity checking
options INVARIANT_SUPPORT # Extra sanity checks of internal structures, required by INVARIANTS
options WITNESS # Enable checks to detect deadlocks and cycles
options WITNESS_SKIPSPIN # Don't run witness on spinlocks for speed
options MALLOC_DEBUG_MAXZONES=8 # Separate malloc(9) zones
options VERBOSE_SYSINIT=0 # Support debug.verbose_sysinit, off by default
options IOMMU
# Make an SMP-capable kernel by default
options SMP # Symmetric MultiProcessor Kernel
options EARLY_AP_STARTUP
# CPU frequency control
device cpufreq
# Bus support.
device acpi
device pci
# atkbdc0 controls both the keyboard and the PS/2 mouse
device atkbdc # AT keyboard controller
device atkbd # AT keyboard
device psm # PS/2 mouse
device kbdmux # keyboard multiplexer
device vga # VGA video card driver
options VESA # Add support for VESA BIOS Extensions (VBE)
device splash # Splash screen and screen saver support
# syscons is the default console driver, resembling an SCO console
device sc
options SC_PIXEL_MODE # add support for the raster text mode
# vt is the new video console driver
device vt
device vt_vga
device vt_efifb
device agp # support several AGP chipsets
# Pseudo devices.
device loop # Network loopback
device padlock_rng # VIA Padlock RNG
device rdrand_rng # Intel Bull Mountain RNG
device ether # Ethernet support
device vlan # 802.1Q VLAN support
device tuntap # Packet tunnel.
device gif # IPv6 and IPv4 tunneling
# The `bpf' device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
# Note that 'bpf' is required for DHCP.
device bpf # Berkeley packet filter
# Xen HVM Guest Optimizations
# NOTE: XENHVM depends on xenpci. They must be added or removed together.
options XENHVM # Xen HVM kernel infrastructure
device xenpci # Xen HVM Hypervisor services driver
# evdev interface
options EVDEV_SUPPORT # evdev support in legacy drivers
device evdev # input event device support
device uinput # install /dev/uinput cdev