2 # GENERIC -- Generic kernel configuration file for FreeBSD/RISC-V
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 PREEMPTION # Enable kernel thread preemption
29 options VIMAGE # Subsystem virtualization, e.g. VNET
30 options INET # InterNETworking
31 options INET6 # IPv6 communications protocols
32 options TCP_HHOOK # hhook(9) framework for TCP
33 options IPSEC_SUPPORT # Allow kldload of ipsec and tcpmd5
34 options TCP_OFFLOAD # TCP offload
35 options SCTP_SUPPORT # Allow kldload of SCTP
36 options FFS # Berkeley Fast Filesystem
37 options SOFTUPDATES # Enable FFS soft updates support
38 options UFS_ACL # Support for access control lists
39 options UFS_DIRHASH # Improve performance on big directories
40 options UFS_GJOURNAL # Enable gjournal-based UFS journaling
41 options QUOTA # Enable disk quotas for UFS
42 options NFSCL # Network Filesystem Client
43 options NFSD # Network Filesystem Server
44 options NFSLOCKD # Network Lock Manager
45 options NFS_ROOT # NFS usable as /, requires NFSCL
46 options MSDOSFS # MSDOS Filesystem
47 options CD9660 # ISO 9660 Filesystem
48 options PROCFS # Process filesystem (requires PSEUDOFS)
49 options PSEUDOFS # Pseudo-filesystem framework
50 options TMPFS # Efficient memory filesystem
51 options GEOM_PART_GPT # GUID Partition Tables.
52 options GEOM_RAID # Soft RAID functionality.
53 options GEOM_LABEL # Provides labelization
54 options SCSI_DELAY=5000 # Delay (in ms) before probing SCSI
55 options KTRACE # ktrace(1) support
56 options STACK # stack(9) support
57 options SYSVSHM # SYSV-style shared memory
58 options SYSVMSG # SYSV-style message queues
59 options SYSVSEM # SYSV-style semaphores
60 options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
61 options PRINTF_BUFR_SIZE=128 # Prevent printf output being interspersed.
62 options KBD_INSTALL_CDEV # install a CDEV entry in /dev
63 # options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4)
64 options AUDIT # Security event auditing
65 options CAPABILITY_MODE # Capsicum capability mode
66 options CAPABILITIES # Capsicum capabilities
67 options MAC # TrustedBSD MAC Framework
68 options KDTRACE_FRAME # Ensure frames are compiled in
69 options KDTRACE_HOOKS # Kernel DTrace hooks
70 options FPE # Floating-point extension support
71 options RACCT # Resource accounting framework
72 options RACCT_DEFAULT_TO_DISABLED # Set kern.racct.enable=0 by default
73 options RCTL # Resource limits
80 # EXT_RESOURCES pseudo devices
91 device virtio # Generic VirtIO bus (required)
92 device virtio_pci # VirtIO PCI device
93 device vtnet # VirtIO Ethernet device
94 device virtio_blk # VirtIO Block device
95 device virtio_mmio # VirtIO MMIO bus
99 # device dtrace_profile
102 # device dtrace_systrace
103 # device dtrace_prototype
107 device uart # Generic UART driver
108 device uart_lowrisc # lowRISC UART driver
109 device uart_ns8250 # ns8250-type UART driver
112 device goldfish_rtc # QEMU RTC
115 device miibus # MII bus support
116 device cgem # Cadence Gigabit Ethernet MAC
117 device xae # Xilinx AXI Ethernet MAC
120 device xdma # DMA interface
121 device axidma # Xilinx AXI DMA Controller
123 # Uncomment for memory disk
125 # options MD_ROOT_SIZE=32768 # 32MB ram disk
126 # makeoptions MFS_IMAGE=/path/to/img
127 # options ROOTDEVNAME=\"ufs:/dev/md0\"
129 # Uncomment for virtio block device
130 # options ROOTDEVNAME=\"ufs:/dev/vtbd0\"
132 # Debugging support. Always need this:
133 options KDB # Enable kernel debugger support.
134 options KDB_TRACE # Print a stack trace for a panic.
135 # For full debugger support use (turn off in stable branch):
136 options DDB # Support DDB.
137 # options GDB # Support remote GDB.
138 options DEADLKRES # Enable the deadlock resolver
139 options INVARIANTS # Enable calls of extra sanity checking
140 options INVARIANT_SUPPORT # Extra sanity checks of internal structures, required by INVARIANTS
141 options WITNESS # Enable checks to detect deadlocks and cycles
142 # options WITNESS_SKIPSPIN # Don't run witness on spinlocks for speed
143 options MALLOC_DEBUG_MAXZONES=8 # Separate malloc(9) zones
144 # options EARLY_PRINTF
145 options VERBOSE_SYSINIT=0 # Support debug.verbose_sysinit, off by default
147 # Kernel dump features.
148 options ZSTDIO # zstd-compressed kernel and user dumps
151 device crypto # core crypto support
152 device loop # Network loopback
153 device ether # Ethernet support
154 device vlan # 802.1Q VLAN support
155 device tuntap # Packet tunnel.
156 device md # Memory "disks"
157 device gif # IPv6 and IPv4 tunneling
158 device firmware # firmware assist module
160 # The `bpf' device enables the Berkeley Packet Filter.
161 # Be aware of the administrative consequences of enabling this!
162 # Note that 'bpf' is required for DHCP.
163 device bpf # Berkeley packet filter