Differential D26502 Diff 78054 head/sys/riscv/conf/NOTES

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head/sys/riscv/conf/NOTES

Property	Old Value	New Value
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svn:keywords	null	FreeBSD=%H \ No newline at end of property
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				#
				# NOTES -- Lines that can be cut/pasted into kernel and hints configs.
				#
				# This file contains machine dependent kernel configuration notes. For
				# machine independent notes, look in /sys/conf/NOTES.
				#
				# $FreeBSD$
				#

				cpu RISCV

				makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols
				makeoptions WITH_CTF=1 # Run ctfconvert(1) for DTrace support

				options PRINTF_BUFR_SIZE=128 # Prevent printf output being interspersed.
				options KDTRACE_FRAME # Ensure frames are compiled in
				options KDTRACE_HOOKS # Kernel DTrace hooks
				options DDB_CTF # Kernel ELF linker loads CTF data
				options FPE # Floating-point extension support
				options RACCT_DEFAULT_TO_DISABLED # Set kern.racct.enable=0 by default
				options INTRNG # Include INTRNG framework

				# RISC-V SBI console
				device rcons

				# EXT_RESOURCES pseudo devices
				options EXT_RESOURCES
				device clk
				device phy
				device regulator
				device syscon
				device syscon_power
				device riscv_syscon

				# Backlight subsystem
				device backlight

				# 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
				device virtio_random # VirtIO Entropy device

				# NOTE: dtrace introduces CDDL-licensed components into the kernel
				device dtrace # dtrace core
				device dtraceall # include all dtrace modules

				# Serial (COM) ports
				device uart_lowrisc # lowRISC UART driver
				device uart_ns8250 # ns8250-type UART driver

				# RTC
				device goldfish_rtc # QEMU RTC

				# Ethernet drivers
				device xae # Xilinx AXI Ethernet MAC

				# DMA support
				device xdma # DMA interface
				device axidma # Xilinx AXI DMA Controller

				# SPI
				device xilinx_spi # Xilinx AXI Quad-SPI Controller

				# SOC-specific
				device fe310aon
				device fu540spi
				files "../sifive/files.sifive"

				# Flattened Device Tree
				options FDT
				makeoptions MODULES_EXTRA+="dtb/sifive"

				# FreeBSD/riscv didn't exist for these releases
				nooptions COMPAT_FREEBSD4
				nooptions COMPAT_FREEBSD5
				nooptions COMPAT_FREEBSD6
				nooptions COMPAT_FREEBSD7
				nooptions COMPAT_FREEBSD9
				nooptions COMPAT_FREEBSD10
				nooptions COMPAT_FREEBSD11

				# No support for remote GDB
				nooptions GDB

				# riscv doesn't support inb/outb, so disable chipset probing which needs it
				nooptions PPC_PROBE_CHIPSET

				# Makes assumptions about bus tags that aren't true on riscv
				nodevice snd_cmi

				# Don't yet have hwpmc(4)
				nodevice hwpmc
				nooptions HWPMC_HOOKS