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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.
				#
				# $FreeBSD$
				#

				#
				# We want LINT to cover profiling as well.
				# Except it's broken.
				#profile 2

				#
				# Enable the kernel DTrace hooks which are required to load the DTrace
				# kernel modules.
				#
				options KDTRACE_HOOKS

				#
				# Most of the following is copied from ARM64 GENERIC.
				cpu ARM64

				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 VFP # Floating-point support
				options RACCT_DEFAULT_TO_DISABLED # Set kern.racct.enable=0 by default
				options INTRNG

				nooptions GDB # Support remote GDB -- not supported

				# SoC support
				options SOC_ALLWINNER_A64
				options SOC_ALLWINNER_H5
				options SOC_CAVM_THUNDERX
				options SOC_HISI_HI6220
				options SOC_BRCM_BCM2837
				options SOC_MARVELL_8K
				options SOC_ROCKCHIP_RK3328
				options SOC_ROCKCHIP_RK3399
				options SOC_XILINX_ZYNQ

				# Timer drivers
				device a10_timer

				# Annapurna Alpine drivers
				device al_ccu # Alpine Cache Coherency Unit
				device al_nb_service # Alpine North Bridge Service
				device al_iofic # I/O Fabric Interrupt Controller
				device al_serdes # Serializer/Deserializer
				device al_udma # Universal DMA

				# Qualcomm Snapdragon drivers
				device qcom_gcc # Global Clock Controller

				# VirtIO support
				device virtio
				device virtio_pci
				device virtio_mmio
				device virtio_blk
				device vtnet

				# CPU frequency control
				device cpufreq

				# Bus drivers
				device al_pci # Annapurna Alpine PCI-E
				options PCI_HP # PCI-Express native HotPlug
				options PCI_IOV # PCI SR-IOV support

				# Ethernet NICs
				device mdio
				device awg # Allwinner EMAC Gigabit Ethernet
				device axgbe # AMD Opteron A1100 integrated NIC
				device neta # Marvell Armada 370/38x/XP/3700 NIC
				device smc # SMSC LAN91C111
				device vnic # Cavium ThunderX NIC
				device al_eth # Annapurna Alpine Ethernet NIC
				device dwc_rk # Rockchip Designware
				device dwc_socfpga # Altera SOCFPGA Ethernet MAC

				# Etherswitch devices
				device e6000sw # Marvell mv88e6085 based switches

				# NVM Express (NVMe) support
				device nvme # base NVMe driver
				options NVME_USE_NVD=0 # prefer the cam(4) based nda(4) driver
				device nvd # expose NVMe namespaces as disks, depends on nvme

				# MMC/SD/SDIO Card slot support
				device sdhci_xenon # Marvell Xenon SD/MMC controller
				device aw_mmc # Allwinner SD/MMC controller
				device dwmmc
				device dwmmc_altera
				device rk_emmcphy

				# Serial (COM) ports
				device uart_msm # Qualcomm MSM UART driver
				device uart_mu # RPI3 aux port
				device uart_mvebu # Armada 3700 UART driver
				device uart_ns8250 # ns8250-type UART driver
				device uart_snps
				device pl011

				# USB support
				device aw_ehci # Allwinner EHCI USB interface (USB 2.0)
				device aw_usbphy # Allwinner USB PHY
				device dwcotg # DWC OTG controller
				device ehci_mv # Marvell EHCI USB interface

				# USB ethernet support
				device muge
				device smsc

				# Sound support
				device a10_codec

				# DMA controller
				device a31_dmac

				# GPIO / PINCTRL
				device a37x0_gpio # Marvell Armada 37x0 GPIO controller
				device aw_gpio # Allwinner GPIO controller
				device fdt_pinctrl
				device mv_gpio # Marvell GPIO controller
				device mvebu_pinctrl # Marvell Pinmux Controller
				device rk_gpio # RockChip GPIO Controller
				device rk_pinctrl # RockChip Pinmux Controller

				# I2C
				device aw_rsb # Allwinner Reduced Serial Bus
				device bcm2835_bsc # Broadcom BCM283x I2C bus
				device twsi # Allwinner I2C controller
				device rk_i2c # RockChip I2C controller

				# Clock and reset controllers
				device aw_ccu # Allwinner clock controller

				# Interrupt controllers
				device aw_nmi # Allwinner NMI support
				device mv_cp110_icu # Marvell CP110 ICU
				device mv_ap806_gicp # Marvell AP806 GICP

				# Real-time clock support
				device aw_rtc # Allwinner Real-time Clock
				device mv_rtc # Marvell Real-time Clock

				# Watchdog controllers
				device aw_wdog # Allwinner Watchdog

				# Power management controllers
				device axp81x # X-Powers AXP81x PMIC
				device rk805 # RockChip RK805 PMIC

				# EFUSE
				device aw_sid # Allwinner Secure ID EFUSE

				# Thermal sensors
				device aw_thermal # Allwinner Thermal Sensor Controller
				device mv_thermal # Marvell Thermal Sensor Controller

				# SPI
				device bcm2835_spi # Broadcom BCM283x SPI bus

				# PWM
				device pwm
				device aw_pwm

				device vt_efifb

				# EVDEV support
				options EVDEV_SUPPORT # evdev support in legacy drivers
				device aw_cir

				# Pseudo devices.
				options EFIRT # EFI Runtime Services

				# EXT_RESOURCES pseudo devices
				options EXT_RESOURCES
				device clk
				device phy
				device hwreset
				device nvmem
				device regulator
				device syscon
				device aw_syscon

				# Chip-specific errata
				options THUNDERX_PASS_1_1_ERRATA

				options FDT
				device acpi

				# DTBs
				makeoptions MODULES_EXTRA="dtb/allwinner dtb/rockchip dtb/rpi"

				# Add CAMDEBUG stuff
				options CAMDEBUG
				options CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO\|CAM_DEBUG_PROBE\|CAM_DEBUG_PERIPH)

				# bring in camified MMC too
				options MMCCAM

				# No support for floppies on arm64
				nodevice fdc

				# arm64 doesn't support inb/outb, so disable chipset probing which needs it
				nooptions PPC_PROBE_CHIPSET

				# can't support syscons, no inb/outb, ditto for the screen savers
				nodevice sc
				nodevice blank_saver
				nodevice daemon_saver
				nodevice dragon_saver
				nodevice fade_saver
				nodevice fire_saver
				nodevice green_saver
				nodevice logo_saver
				nodevice rain_saver
				nodevice snake_saver
				nodevice star_saver
				nodevice warp_saver

				# These cause weird issues, not sure why
				nodevice ukbd
				nooptions DEBUG

				# Makes assumptions about bus tags that aren't true on arm64
				nodevice snd_cmi

				# arm64 didn't exist for these releases, so doesn't have the required compat
				# support. Just disable them because they are meaningless.
				nooptions COMPAT_FREEBSD4
				nooptions COMPAT_FREEBSD5
				nooptions COMPAT_FREEBSD6
				nooptions COMPAT_FREEBSD7
				nooptions COMPAT_FREEBSD9
				nooptions COMPAT_FREEBSD10

				# arm64 supports 32-bit FreeBSD/arm binaries (armv[67] ABIs)
				options COMPAT_FREEBSD32 # Compatible with FreeBSD/arm