FreeBSD/Linux Kernel Cross Reference
sys/riscv/conf/GENERIC

     #
     # GENERIC -- Generic kernel configuration file for FreeBSD/RISC-V
     #
     # 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             RISCV
    ident           GENERIC
    
    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         PREEMPTION              # Enable kernel thread preemption
    options         VIMAGE                  # Subsystem virtualization, e.g. VNET
    options         INET                    # InterNETworking
    options         INET6                   # IPv6 communications protocols
    options         TCP_HHOOK               # hhook(9) framework for TCP
    options         IPSEC                   # IP (v4/v6) security
    options         IPSEC_SUPPORT           # Allow kldload of ipsec and tcpmd5
    options         TCP_OFFLOAD             # TCP offload
    options         SCTP                    # Stream Control Transmission Protocol
    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         NFSCL                   # Network Filesystem Client
    options         NFSD                    # Network Filesystem Server
    options         NFSLOCKD                # Network Lock Manager
    options         NFS_ROOT                # NFS usable as /, requires NFSCL
    options         MSDOSFS                 # MSDOS Filesystem
    options         CD9660                  # ISO 9660 Filesystem
    options         PROCFS                  # Process filesystem (requires PSEUDOFS)
    options         PSEUDOFS                # Pseudo-filesystem framework
    options         GEOM_PART_GPT           # GUID Partition Tables.
    options         GEOM_RAID               # Soft RAID functionality.
    options         GEOM_LABEL              # Provides labelization
    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         FPE                     # Floating-point extension support
    options         RACCT                   # Resource accounting framework
    options         RACCT_DEFAULT_TO_DISABLED # Set kern.racct.enable=0 by default
    options         RCTL                    # Resource limits
    options         SMP
    options         INTRNG
    
    # RISC-V SBI console
    device          rcons
    
    # VirtIO support
    device          virtio                  # Generic VirtIO bus (required)
    device          virtio_pci              # VirtIO PCI device
    device          vtnet                   # VirtIO Ethernet device
    device          virtio_blk              # VirtIO Block device
    device          virtio_mmio             # VirtIO MMIO bus
    
    # DTrace support
    # device        dtrace
    # device        dtrace_profile
    # device        dtrace_sdt
    # device        dtrace_fbt
    # device        dtrace_systrace
    # device        dtrace_prototype
    # device        dtraceall
    
    # Serial (COM) ports
    device          uart            # Generic UART driver
    device          uart_lowrisc    # lowRISC UART driver
    device          uart_ns8250     # ns8250-type UART driver
   
   
   # Ethernet drivers
   device          miibus          # MII bus support
   device          cgem            # Cadence Gigabit Ethernet MAC
   device          xae             # Xilinx AXI Ethernet MAC
   
   # DMA support
   device          xdma            # DMA interface
   device          axidma          # Xilinx AXI DMA Controller
   
   # Uncomment for memory disk
   # options       MD_ROOT
   # options       MD_ROOT_SIZE=32768      # 32MB ram disk
   # makeoptions   MFS_IMAGE=/path/to/img
   # options       ROOTDEVNAME=\"ufs:/dev/md0\"
   
   # Uncomment for virtio block device
   # options       ROOTDEVNAME=\"ufs:/dev/vtbd0\"
   
   # Debugging support.  Always need this:
   options         KDB                     # Enable kernel debugger support.
   options         KDB_TRACE               # Print a stack trace for a panic.
   
   # Kernel dump features.
   options         ZSTDIO                  # zstd-compressed kernel and user dumps
   
   # Pseudo devices.
   device          crypto          # core crypto support
   device          loop            # Network loopback
   device          random          # Entropy device
   device          ether           # Ethernet support
   device          vlan            # 802.1Q VLAN support
   device          tuntap          # Packet tunnel.
   device          md              # Memory "disks"
   device          gif             # IPv6 and IPv4 tunneling
   device          firmware        # firmware assist module
   
   # 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
   
   options         FDT

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