Welcome the RISC-V 64-bit kernel.

This is the final step required allowing to compile and to run RISC-V
kernel and userland from HEAD.

RISC-V is a completely open ISA that is freely available to academia
and industry.

Thanks to all the people involved! Special thanks to Andrew Turner,
David Chisnall, Ed Maste, Konstantin Belousov, John Baldwin and
Arun Thomas for their help.
Thanks to Robert Watson for organizing this project.

This project sponsored by UK Higher Education Innovation Fund (HEIF5) and
DARPA CTSRD project at the University of Cambridge Computer Laboratory.

FreeBSD/RISC-V project home: https://wiki.freebsd.org/riscv

Reviewed by:	andrew, emaste, kib
Relnotes:	Yes
Sponsored by:	DARPA, AFRL
Sponsored by:	HEIF5
Differential Revision:	https://reviews.freebsd.org/D4982

2 files changed, 117 insertions, 0 deletions

diff --git a/sys/riscv/conf/DEFAULTS b/sys/riscv/conf/DEFAULTS
new file mode 100644
index 000000000000..5451decf822d
--- /dev/null
+++ b/sys/riscv/conf/DEFAULTS
@@ -0,0 +1,13 @@
+#
+# DEFAULTS -- Default kernel configuration file for FreeBSD/RISC-V
+#
+# $FreeBSD$
+
+machine		riscv	riscv64
+
+# Pseudo devices.
+device		mem		# Memory and kernel memory devices
+
+# Default partitioning schemes
+options 	GEOM_PART_BSD
+options 	GEOM_PART_MBR
diff --git a/sys/riscv/conf/GENERIC b/sys/riscv/conf/GENERIC
new file mode 100644
index 000000000000..a32a1f24ecfb
--- /dev/null
+++ b/sys/riscv/conf/GENERIC
@@ -0,0 +1,104 @@
+#
+# 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:
+#
+#    http://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 (http://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
+makeoptions	NO_MODULES=1		# We don't yet support modules on RISC-V
+
+options 	SCHED_ULE		# ULE scheduler
+options 	PREEMPTION		# Enable kernel thread preemption
+options 	INET			# InterNETworking
+options 	INET6			# IPv6 communications protocols
+options 	IPSEC			# IP (v4/v6) security
+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 	MD_ROOT			# MD is a potential root device
+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 	VFP			# Floating-point support
+options 	RACCT			# Resource accounting framework
+options 	RACCT_DEFAULT_TO_DISABLED # Set kern.racct.enable=0 by default
+options 	RCTL			# Resource limits
+# options 	SMP
+
+# 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 	ROOTDEVNAME=\"ufs:/dev/htif_blk0\"
+# options 	EARLY_PRINTF
+
+# Pseudo devices.
+device		loop		# Network loopback
+device		random		# Entropy device
+device		ether		# Ethernet support
+device		vlan		# 802.1Q VLAN support
+device		tun		# Packet tunnel.
+device		md		# Memory "disks"
+device		gif		# IPv6 and IPv4 tunneling
+device		firmware	# firmware assist module
+
+# RISCVTODO: This needs to be done via loader (when it's available).
+options 	FDT
+options 	FDT_DTB_STATIC
+makeoptions	FDT_DTS_FILE=spike.dts