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11b099f803
Armv8.5 adds an optional random number generator. This is implemented as two special registers one to read a random number, the other to re-seed the entropy pool before reading a random number. Both registers will set the condition flags to tell the caller they can't produce a random number in a reasonable amount of time. Without a signal to reseed the entropy pool use the latter register to provide random numbers to the kernel pool. If at a later time we had a way to tell the provider if it needs to reseed or not we could use the former. On an Amazon AWS Graviton3 VM this never failed, however this may not be the case on low end CPUs so retry reading the random number 10 times before returning an error. Reviewed by: imp, delphij (csprng) Sponsored by: The FreeBSD Foundation Sponsored by: Arm Ltd Differential Revision: https://reviews.freebsd.org/D35411 (cherry picked from commit 9eecef052155646fbc5f8f533b952b372572d06a)
120 lines
2.8 KiB
Text
120 lines
2.8 KiB
Text
# Bus drivers
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device pci
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options PCI_HP # PCI-Express native HotPlug
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options PCI_IOV # PCI SR-IOV support
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# CPU frequency control
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device cpufreq
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# Block devices
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device ahci
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device scbus
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device da
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# ATA/SCSI peripherals
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device cd # CD
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device pass # Passthrough device (direct ATA/SCSI access)
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# NVM Express (NVMe) support
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device nvme # base NVMe driver
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options NVME_USE_NVD=0 # prefer the cam(4) based nda(4) driver
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device nvd # expose NVMe namespaces as disks, depends on nvme
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# GPIO / PINCTRL
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device gpio
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device gpioled
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device fdt_pinctrl
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device gpioregulator
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# I2C
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device iicbus
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device iicmux
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device iic
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device icee # Generic IIC eeprom
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# Crypto accelerators
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device armv8crypto # ARMv8 OpenCrypto module
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# SPI
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device spibus
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# PWM
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device pwm
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# Serial (COM) ports
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device uart # Generic UART driver
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# Console
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device vt
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device kbdmux
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device vt_efifb
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device vt_simplefb
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# Pseudo devices.
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device crypto # core crypto support
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device armv8_rng # Armv8.5 rndr RNG
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device loop # Network loopback
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device ether # Ethernet support
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device vlan # 802.1Q VLAN support
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device tuntap # Packet tunnel.
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device md # Memory "disks"
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device gif # IPv6 and IPv4 tunneling
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device firmware # firmware assist module
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device clk
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device phy
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device hwreset
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device nvmem
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device regulator
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device syscon
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# EVDEV support
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device evdev # input event device support
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options EVDEV_SUPPORT # evdev support in legacy drivers
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device uinput # install /dev/uinput cdev
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# PCI/PCI-X/PCIe Ethernet NICs that use iflib infrastructure
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device iflib
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device em # Intel PRO/1000 Gigabit Ethernet Family
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device ix # Intel 10Gb Ethernet Family
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# Ethernet NICs
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device mdio
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device mii
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device miibus # MII bus support
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# The `bpf' device enables the Berkeley Packet Filter.
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# Be aware of the administrative consequences of enabling this!
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# Note that 'bpf' is required for DHCP.
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device bpf # Berkeley packet filter
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# Netmap provides direct access to TX/RX rings on supported NICs
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device netmap # netmap(4) support
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# USB support
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options USB_DEBUG # enable debug msgs
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options USB_HOST_ALIGN=64 # Align usb buffers to cache line size.
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device ohci # OHCI USB interface
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device uhci # UHCI USB interface
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device ehci # EHCI USB interface (USB 2.0)
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device xhci # XHCI USB interface (USB 3.0)
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device usb # USB Bus (required)
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device usbhid # USB HID Transport
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device hkbd # HID Keyboard
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device ukbd # USB Keyboard
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device umass # Disks/Mass storage - Requires scbus and da
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# Sound support
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device sound
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# MMC/SD/SDIO Card slot support
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device mmc # mmc/sd bus
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device mmcsd # mmc/sd flash cards
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# HID support
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options HID_DEBUG # enable debug msgs
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device hid # Generic HID support
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device hidbus # Generic HID Bus
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# Firmware
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device mmio_sram # Generic on-chip SRAM
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