drivers/char/hw_random/Kconfig - linux - Git at Google

 # SPDX-License-Identifier: GPL-2.0-only
 #
 # Hardware Random Number Generator (RNG) configuration
 #

 menuconfig HW_RANDOM
 	tristate "Hardware Random Number Generator Core support"
 	default m
 	help
 	  Hardware Random Number Generator Core infrastructure.

 	  To compile this driver as a module, choose M here: the
 	  module will be called rng-core.  This provides a device
 	  that's usually called /dev/hwrng, and which exposes one
 	  of possibly several hardware random number generators.

 	  These hardware random number generators do feed into the
 	  kernel's random number generator entropy pool.

 	  If unsure, say Y.

 if HW_RANDOM

 config HW_RANDOM_TIMERIOMEM
 	tristate "Timer IOMEM HW Random Number Generator support"
 	depends on HAS_IOMEM
 	help
 	  This driver provides kernel-side support for a generic Random
 	  Number Generator used by reading a 'dumb' iomem address that
 	  is to be read no faster than, for example, once a second;
 	  the default FPGA bitstream on the TS-7800 has such functionality.

 	  To compile this driver as a module, choose M here: the
 	  module will be called timeriomem-rng.

 	  If unsure, say Y.

 config HW_RANDOM_INTEL
 	tristate "Intel HW Random Number Generator support"
 	depends on (X86 || IA64) && PCI
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on Intel i8xx-based motherboards.

 	  To compile this driver as a module, choose M here: the
 	  module will be called intel-rng.

 	  If unsure, say Y.

 config HW_RANDOM_AMD
 	tristate "AMD HW Random Number Generator support"
 	depends on (X86 || PPC_MAPLE) && PCI
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on AMD 76x-based motherboards.

 	  To compile this driver as a module, choose M here: the
 	  module will be called amd-rng.

 	  If unsure, say Y.

 config HW_RANDOM_ATMEL
 	tristate "Atmel Random Number Generator support"
 	depends on (ARCH_AT91 || COMPILE_TEST) && HAVE_CLK && OF
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on Atmel AT91 devices.

 	  To compile this driver as a module, choose M here: the
 	  module will be called atmel-rng.

 	  If unsure, say Y.

 config HW_RANDOM_BA431
 	tristate "Silex Insight BA431 Random Number Generator support"
 	depends on HAS_IOMEM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware based on Silex Insight BA431 IP.

 	  To compile this driver as a module, choose M here: the
 	  module will be called ba431-rng.

 config HW_RANDOM_BCM2835
 	tristate "Broadcom BCM2835/BCM63xx Random Number Generator support"
 	depends on ARCH_BCM2835 || ARCH_BCM_NSP || ARCH_BCM_5301X || \
 		   ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC || COMPILE_TEST
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on the Broadcom BCM2835 and BCM63xx SoCs.

 	  To compile this driver as a module, choose M here: the
 	  module will be called bcm2835-rng

 	  If unsure, say Y.

 config HW_RANDOM_IPROC_RNG200
 	tristate "Broadcom iProc/STB RNG200 support"
 	depends on ARCH_BCM_IPROC || ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the RNG200
 	  hardware found on the Broadcom iProc and STB SoCs.

 	  To compile this driver as a module, choose M here: the
 	  module will be called iproc-rng200

 	  If unsure, say Y.

 config HW_RANDOM_GEODE
 	tristate "AMD Geode HW Random Number Generator support"
 	depends on X86_32 && PCI
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on the AMD Geode LX.

 	  To compile this driver as a module, choose M here: the
 	  module will be called geode-rng.

 	  If unsure, say Y.

 config HW_RANDOM_N2RNG
 	tristate "Niagara2 Random Number Generator support"
 	depends on SPARC64
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on Niagara2 cpus.

 	  To compile this driver as a module, choose M here: the
 	  module will be called n2-rng.

 	  If unsure, say Y.

 config HW_RANDOM_VIA
 	tristate "VIA HW Random Number Generator support"
 	depends on X86
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on VIA based motherboards.

 	  To compile this driver as a module, choose M here: the
 	  module will be called via-rng.

 	  If unsure, say Y.

 config HW_RANDOM_IXP4XX
 	tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support"
 	depends on ARCH_IXP4XX || COMPILE_TEST
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Pseudo-Random
 	  Number Generator hardware found on the Intel IXP45x/46x NPU.

 	  To compile this driver as a module, choose M here: the
 	  module will be called ixp4xx-rng.

 	  If unsure, say Y.

 config HW_RANDOM_OMAP
 	tristate "OMAP Random Number Generator support"
 	depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || ARCH_MVEBU || ARCH_K3 || COMPILE_TEST
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on OMAP16xx, OMAP2/3/4/5, AM33xx/AM43xx
 	  multimedia processors, and Marvell Armada 7k/8k SoCs.

 	  To compile this driver as a module, choose M here: the
 	  module will be called omap-rng.

 	  If unsure, say Y.

 config HW_RANDOM_OMAP3_ROM
 	tristate "OMAP3 ROM Random Number Generator support"
 	depends on ARCH_OMAP3 || COMPILE_TEST
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on OMAP34xx processors.

 	  To compile this driver as a module, choose M here: the
 	  module will be called omap3-rom-rng.

 	  If unsure, say Y.

 config HW_RANDOM_OCTEON
 	tristate "Octeon Random Number Generator support"
 	depends on CAVIUM_OCTEON_SOC
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on Octeon processors.

 	  To compile this driver as a module, choose M here: the
 	  module will be called octeon-rng.

 	  If unsure, say Y.

 config HW_RANDOM_PASEMI
 	tristate "PA Semi HW Random Number Generator support"
 	depends on PPC_PASEMI
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on PA Semi PWRficient SoCs.

 	  To compile this driver as a module, choose M here: the
 	  module will be called pasemi-rng.

 	  If unsure, say Y.

 config HW_RANDOM_VIRTIO
 	tristate "VirtIO Random Number Generator support"
 	depends on VIRTIO
 	help
 	  This driver provides kernel-side support for the virtual Random Number
 	  Generator hardware.

 	  To compile this driver as a module, choose M here: the
 	  module will be called virtio-rng.  If unsure, say N.

 config HW_RANDOM_MXC_RNGA
 	tristate "Freescale i.MX RNGA Random Number Generator"
 	depends on SOC_IMX31
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on Freescale i.MX processors.

 	  To compile this driver as a module, choose M here: the
 	  module will be called mxc-rnga.

 	  If unsure, say Y.

 config HW_RANDOM_IMX_RNGC
 	tristate "Freescale i.MX RNGC Random Number Generator"
 	depends on HAS_IOMEM && HAVE_CLK
 	depends on SOC_IMX25 || SOC_IMX6SL || SOC_IMX6SLL || SOC_IMX6UL || COMPILE_TEST
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator Version C hardware found on some Freescale i.MX
 	  processors. Version B is also supported by this driver.

 	  To compile this driver as a module, choose M here: the
 	  module will be called imx-rngc.

 	  If unsure, say Y.

 config HW_RANDOM_INGENIC_RNG
 	tristate "Ingenic Random Number Generator support"
 	depends on HW_RANDOM
 	depends on MACH_JZ4780 || MACH_X1000
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number Generator
 	  hardware found in ingenic JZ4780 and X1000 SoC. MIPS Creator CI20 uses
 	  JZ4780 SoC, YSH & ATIL CU1000-Neo uses X1000 SoC.

 	  To compile this driver as a module, choose M here: the
 	  module will be called ingenic-rng.

 	  If unsure, say Y.

 config HW_RANDOM_INGENIC_TRNG
 	tristate "Ingenic True Random Number Generator support"
 	depends on HW_RANDOM
 	depends on MACH_X1830
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the True Random Number Generator
 	  hardware found in ingenic X1830 SoC. YSH & ATIL CU1830-Neo uses X1830 SoC.

 	  To compile this driver as a module, choose M here: the
 	  module will be called ingenic-trng.

 	  If unsure, say Y.

 config HW_RANDOM_NOMADIK
 	tristate "ST-Ericsson Nomadik Random Number Generator support"
 	depends on ARCH_NOMADIK || COMPILE_TEST
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on ST-Ericsson SoCs (8815 and 8500).

 	  To compile this driver as a module, choose M here: the
 	  module will be called nomadik-rng.

 	  If unsure, say Y.

 config HW_RANDOM_PSERIES
 	tristate "pSeries HW Random Number Generator support"
 	depends on PPC64 && IBMVIO
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on POWER7+ machines and above

 	  To compile this driver as a module, choose M here: the
 	  module will be called pseries-rng.

 	  If unsure, say Y.

 config HW_RANDOM_POWERNV
 	tristate "PowerNV Random Number Generator support"
 	depends on PPC_POWERNV
 	default HW_RANDOM
 	help
 	  This is the driver for Random Number Generator hardware found
 	  in POWER7+ and above machines for PowerNV platform.

 	  To compile this driver as a module, choose M here: the
 	  module will be called powernv-rng.

 	  If unsure, say Y.

 config HW_RANDOM_HISI
 	tristate "Hisilicon Random Number Generator support"
 	depends on HW_RANDOM && ARCH_HISI
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on Hisilicon Hip04 and Hip05 SoC.

 	  To compile this driver as a module, choose M here: the
 	  module will be called hisi-rng.

 	  If unsure, say Y.

 config HW_RANDOM_ST
 	tristate "ST Microelectronics HW Random Number Generator support"
 	depends on HW_RANDOM && ARCH_STI
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on STi series of SoCs.

 	  To compile this driver as a module, choose M here: the
 	  module will be called st-rng.

 config HW_RANDOM_XGENE
 	tristate "APM X-Gene True Random Number Generator (TRNG) support"
 	depends on HW_RANDOM && ARCH_XGENE
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on APM X-Gene SoC.

 	  To compile this driver as a module, choose M here: the
 	  module will be called xgene_rng.

 	  If unsure, say Y.

 config HW_RANDOM_STM32
 	tristate "STMicroelectronics STM32 random number generator"
 	depends on HW_RANDOM && (ARCH_STM32 || COMPILE_TEST)
 	depends on HAS_IOMEM
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on STM32 microcontrollers.

 	  To compile this driver as a module, choose M here: the
 	  module will be called stm32-rng.

 	  If unsure, say N.

 config HW_RANDOM_PIC32
 	tristate "Microchip PIC32 Random Number Generator support"
 	depends on HW_RANDOM && MACH_PIC32
 	default y
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on a PIC32.

 	  To compile this driver as a module, choose M here. the
 	  module will be called pic32-rng.

 	  If unsure, say Y.

 config HW_RANDOM_POLARFIRE_SOC
 	tristate "Microchip PolarFire SoC Random Number Generator support"
 	depends on HW_RANDOM && POLARFIRE_SOC_SYS_CTRL
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on PolarFire SoC (MPFS).

 	  To compile this driver as a module, choose M here. The
 	  module will be called mfps_rng.

 	  If unsure, say N.


 config HW_RANDOM_MESON
 	tristate "Amlogic Meson Random Number Generator support"
 	depends on HW_RANDOM
 	depends on ARCH_MESON || COMPILE_TEST
 	default y
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on Amlogic Meson SoCs.

 	  To compile this driver as a module, choose M here. the
 	  module will be called meson-rng.

 	  If unsure, say Y.

 config HW_RANDOM_CAVIUM
 	tristate "Cavium ThunderX Random Number Generator support"
 	depends on HW_RANDOM && PCI && ARCH_THUNDER
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on Cavium SoCs.

 	  To compile this driver as a module, choose M here: the
 	  module will be called cavium_rng.

 	  If unsure, say Y.

 config HW_RANDOM_MTK
 	tristate "Mediatek Random Number Generator support"
 	depends on HW_RANDOM
 	depends on ARCH_MEDIATEK || COMPILE_TEST
 	default y
 	help
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on Mediatek SoCs.

 	  To compile this driver as a module, choose M here. the
 	  module will be called mtk-rng.

 	  If unsure, say Y.

 config HW_RANDOM_S390
 	tristate "S390 True Random Number Generator support"
 	depends on S390
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the True
 	  Random Number Generator available as CPACF extension
 	  on modern s390 hardware platforms.

 	  To compile this driver as a module, choose M here: the
 	  module will be called s390-trng.

 	  If unsure, say Y.

 config HW_RANDOM_EXYNOS
 	tristate "Samsung Exynos True Random Number Generator support"
 	depends on ARCH_EXYNOS || COMPILE_TEST
 	default HW_RANDOM
 	help
 	  This driver provides support for the True Random Number
 	  Generator available in Exynos SoCs.

 	  To compile this driver as a module, choose M here: the module
 	  will be called exynos-trng.

 	  If unsure, say Y.

 config HW_RANDOM_OPTEE
 	tristate "OP-TEE based Random Number Generator support"
 	depends on OPTEE
 	default HW_RANDOM
 	help
 	  This  driver provides support for OP-TEE based Random Number
 	  Generator on ARM SoCs where hardware entropy sources are not
 	  accessible to normal world (Linux).

 	  To compile this driver as a module, choose M here: the module
 	  will be called optee-rng.

 	  If unsure, say Y.

 config HW_RANDOM_NPCM
 	tristate "NPCM Random Number Generator support"
 	depends on ARCH_NPCM || COMPILE_TEST
 	default HW_RANDOM
 	help
 	  This driver provides support for the Random Number
 	  Generator hardware available in Nuvoton NPCM SoCs.

 	  To compile this driver as a module, choose M here: the
 	  module will be called npcm-rng.

 	  If unsure, say Y.

 config HW_RANDOM_KEYSTONE
 	depends on ARCH_KEYSTONE || COMPILE_TEST
 	depends on HAS_IOMEM && OF
 	default HW_RANDOM
 	tristate "TI Keystone NETCP SA Hardware random number generator"
 	help
 	  This option enables Keystone's hardware random generator.

 config HW_RANDOM_CCTRNG
 	tristate "Arm CryptoCell True Random Number Generator support"
 	depends on HAS_IOMEM && OF
 	help
 	  Say 'Y' to enable the True Random Number Generator driver for the
 	  Arm TrustZone CryptoCell family of processors.
 	  Currently the CryptoCell 713 and 703 are supported.
 	  The driver is supported only in SoC where Trusted Execution
 	  Environment is not used.
 	  Choose 'M' to compile this driver as a module. The module
 	  will be called cctrng.
 	  If unsure, say 'N'.

 config HW_RANDOM_XIPHERA
 	tristate "Xiphera FPGA based True Random Number Generator support"
 	depends on HAS_IOMEM
 	help
 	  This driver provides kernel-side support for Xiphera True Random
 	  Number Generator Intellectual Property Core.

 	  To compile this driver as a module, choose M here: the
 	  module will be called xiphera-trng.

 config HW_RANDOM_ARM_SMCCC_TRNG
 	tristate "Arm SMCCC TRNG firmware interface support"
 	depends on HAVE_ARM_SMCCC_DISCOVERY
 	default HW_RANDOM
 	help
 	  Say 'Y' to enable the True Random Number Generator driver using
 	  the Arm SMCCC TRNG firmware interface. This reads entropy from
 	  higher exception levels (firmware, hypervisor). Uses SMCCC for
 	  communicating with the firmware:
 	  https://developer.arm.com/documentation/den0098/latest/

 	  To compile this driver as a module, choose M here: the
 	  module will be called arm_smccc_trng.

 config HW_RANDOM_CN10K
        tristate "Marvell CN10K Random Number Generator support"
        depends on HW_RANDOM && PCI && (ARM64 || (64BIT && COMPILE_TEST))
        default HW_RANDOM
        help
 	 This driver provides support for the True Random Number
 	 generator available in Marvell CN10K SoCs.

 	 To compile this driver as a module, choose M here.
 	 The module will be called cn10k_rng. If unsure, say Y.

 config HW_RANDOM_JH7110
 	tristate "StarFive JH7110 Random Number Generator support"
 	depends on SOC_STARFIVE || COMPILE_TEST
 	help
 	  This driver provides support for the True Random Number
 	  Generator in StarFive JH7110 SoCs.

 	  To compile this driver as a module, choose M here.
 	  The module will be called jh7110-trng.

 endif # HW_RANDOM

 config UML_RANDOM
 	depends on UML
 	select HW_RANDOM
 	tristate "UML Random Number Generator support"
 	help
 	  This option enables UML's "hardware" random number generator.  It
 	  attaches itself to the host's /dev/random, supplying as much entropy
 	  as the host has, rather than the small amount the UML gets from its
 	  own drivers. It registers itself as a rng-core driver thus providing
 	  a device which is usually called /dev/hwrng. This hardware random
 	  number generator does feed into the kernel's random number generator
 	  entropy pool.

 	  If unsure, say Y.
	# SPDX-License-Identifier: GPL-2.0-only
	#
	# Hardware Random Number Generator (RNG) configuration
	#

	menuconfig HW_RANDOM
	tristate "Hardware Random Number Generator Core support"
	default m
	help
	Hardware Random Number Generator Core infrastructure.

	To compile this driver as a module, choose M here: the
	module will be called rng-core. This provides a device
	that's usually called /dev/hwrng, and which exposes one
	of possibly several hardware random number generators.

	These hardware random number generators do feed into the
	kernel's random number generator entropy pool.

	If unsure, say Y.

	if HW_RANDOM

	config HW_RANDOM_TIMERIOMEM
	tristate "Timer IOMEM HW Random Number Generator support"
	depends on HAS_IOMEM
	help
	This driver provides kernel-side support for a generic Random
	Number Generator used by reading a 'dumb' iomem address that
	is to be read no faster than, for example, once a second;
	the default FPGA bitstream on the TS-7800 has such functionality.

	To compile this driver as a module, choose M here: the
	module will be called timeriomem-rng.

	If unsure, say Y.

	config HW_RANDOM_INTEL
	tristate "Intel HW Random Number Generator support"
	depends on (X86 \|\| IA64) && PCI
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on Intel i8xx-based motherboards.

	To compile this driver as a module, choose M here: the
	module will be called intel-rng.

	If unsure, say Y.

	config HW_RANDOM_AMD
	tristate "AMD HW Random Number Generator support"
	depends on (X86 \|\| PPC_MAPLE) && PCI
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on AMD 76x-based motherboards.

	To compile this driver as a module, choose M here: the
	module will be called amd-rng.

	If unsure, say Y.

	config HW_RANDOM_ATMEL
	tristate "Atmel Random Number Generator support"
	depends on (ARCH_AT91 \|\| COMPILE_TEST) && HAVE_CLK && OF
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on Atmel AT91 devices.

	To compile this driver as a module, choose M here: the
	module will be called atmel-rng.

	If unsure, say Y.

	config HW_RANDOM_BA431
	tristate "Silex Insight BA431 Random Number Generator support"
	depends on HAS_IOMEM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware based on Silex Insight BA431 IP.

	To compile this driver as a module, choose M here: the
	module will be called ba431-rng.

	config HW_RANDOM_BCM2835
	tristate "Broadcom BCM2835/BCM63xx Random Number Generator support"
	depends on ARCH_BCM2835 \|\| ARCH_BCM_NSP \|\| ARCH_BCM_5301X \|\| \
	ARCH_BCMBCA \|\| BCM63XX \|\| BMIPS_GENERIC \|\| COMPILE_TEST
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on the Broadcom BCM2835 and BCM63xx SoCs.

	To compile this driver as a module, choose M here: the
	module will be called bcm2835-rng

	If unsure, say Y.

	config HW_RANDOM_IPROC_RNG200
	tristate "Broadcom iProc/STB RNG200 support"
	depends on ARCH_BCM_IPROC \|\| ARCH_BCM2835 \|\| ARCH_BRCMSTB \|\| COMPILE_TEST
	default HW_RANDOM
	help
	This driver provides kernel-side support for the RNG200
	hardware found on the Broadcom iProc and STB SoCs.

	To compile this driver as a module, choose M here: the
	module will be called iproc-rng200

	If unsure, say Y.

	config HW_RANDOM_GEODE
	tristate "AMD Geode HW Random Number Generator support"
	depends on X86_32 && PCI
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on the AMD Geode LX.

	To compile this driver as a module, choose M here: the
	module will be called geode-rng.

	If unsure, say Y.

	config HW_RANDOM_N2RNG
	tristate "Niagara2 Random Number Generator support"
	depends on SPARC64
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on Niagara2 cpus.

	To compile this driver as a module, choose M here: the
	module will be called n2-rng.

	If unsure, say Y.

	config HW_RANDOM_VIA
	tristate "VIA HW Random Number Generator support"
	depends on X86
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on VIA based motherboards.

	To compile this driver as a module, choose M here: the
	module will be called via-rng.

	If unsure, say Y.

	config HW_RANDOM_IXP4XX
	tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support"
	depends on ARCH_IXP4XX \|\| COMPILE_TEST
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Pseudo-Random
	Number Generator hardware found on the Intel IXP45x/46x NPU.

	To compile this driver as a module, choose M here: the
	module will be called ixp4xx-rng.

	If unsure, say Y.

	config HW_RANDOM_OMAP
	tristate "OMAP Random Number Generator support"
	depends on ARCH_OMAP16XX \|\| ARCH_OMAP2PLUS \|\| ARCH_MVEBU \|\| ARCH_K3 \|\| COMPILE_TEST
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on OMAP16xx, OMAP2/3/4/5, AM33xx/AM43xx
	multimedia processors, and Marvell Armada 7k/8k SoCs.

	To compile this driver as a module, choose M here: the
	module will be called omap-rng.

	If unsure, say Y.

	config HW_RANDOM_OMAP3_ROM
	tristate "OMAP3 ROM Random Number Generator support"
	depends on ARCH_OMAP3 \|\| COMPILE_TEST
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on OMAP34xx processors.

	To compile this driver as a module, choose M here: the
	module will be called omap3-rom-rng.

	If unsure, say Y.

	config HW_RANDOM_OCTEON
	tristate "Octeon Random Number Generator support"
	depends on CAVIUM_OCTEON_SOC
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on Octeon processors.

	To compile this driver as a module, choose M here: the
	module will be called octeon-rng.

	If unsure, say Y.

	config HW_RANDOM_PASEMI
	tristate "PA Semi HW Random Number Generator support"
	depends on PPC_PASEMI
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on PA Semi PWRficient SoCs.

	To compile this driver as a module, choose M here: the
	module will be called pasemi-rng.

	If unsure, say Y.

	config HW_RANDOM_VIRTIO
	tristate "VirtIO Random Number Generator support"
	depends on VIRTIO
	help
	This driver provides kernel-side support for the virtual Random Number
	Generator hardware.

	To compile this driver as a module, choose M here: the
	module will be called virtio-rng. If unsure, say N.

	config HW_RANDOM_MXC_RNGA
	tristate "Freescale i.MX RNGA Random Number Generator"
	depends on SOC_IMX31
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on Freescale i.MX processors.

	To compile this driver as a module, choose M here: the
	module will be called mxc-rnga.

	If unsure, say Y.

	config HW_RANDOM_IMX_RNGC
	tristate "Freescale i.MX RNGC Random Number Generator"
	depends on HAS_IOMEM && HAVE_CLK
	depends on SOC_IMX25 \|\| SOC_IMX6SL \|\| SOC_IMX6SLL \|\| SOC_IMX6UL \|\| COMPILE_TEST
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator Version C hardware found on some Freescale i.MX
	processors. Version B is also supported by this driver.

	To compile this driver as a module, choose M here: the
	module will be called imx-rngc.

	If unsure, say Y.

	config HW_RANDOM_INGENIC_RNG
	tristate "Ingenic Random Number Generator support"
	depends on HW_RANDOM
	depends on MACH_JZ4780 \|\| MACH_X1000
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number Generator
	hardware found in ingenic JZ4780 and X1000 SoC. MIPS Creator CI20 uses
	JZ4780 SoC, YSH & ATIL CU1000-Neo uses X1000 SoC.

	To compile this driver as a module, choose M here: the
	module will be called ingenic-rng.

	If unsure, say Y.

	config HW_RANDOM_INGENIC_TRNG
	tristate "Ingenic True Random Number Generator support"
	depends on HW_RANDOM
	depends on MACH_X1830
	default HW_RANDOM
	help
	This driver provides kernel-side support for the True Random Number Generator
	hardware found in ingenic X1830 SoC. YSH & ATIL CU1830-Neo uses X1830 SoC.

	To compile this driver as a module, choose M here: the
	module will be called ingenic-trng.

	If unsure, say Y.

	config HW_RANDOM_NOMADIK
	tristate "ST-Ericsson Nomadik Random Number Generator support"
	depends on ARCH_NOMADIK \|\| COMPILE_TEST
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on ST-Ericsson SoCs (8815 and 8500).

	To compile this driver as a module, choose M here: the
	module will be called nomadik-rng.

	If unsure, say Y.

	config HW_RANDOM_PSERIES
	tristate "pSeries HW Random Number Generator support"
	depends on PPC64 && IBMVIO
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on POWER7+ machines and above

	To compile this driver as a module, choose M here: the
	module will be called pseries-rng.

	If unsure, say Y.

	config HW_RANDOM_POWERNV
	tristate "PowerNV Random Number Generator support"
	depends on PPC_POWERNV
	default HW_RANDOM
	help
	This is the driver for Random Number Generator hardware found
	in POWER7+ and above machines for PowerNV platform.

	To compile this driver as a module, choose M here: the
	module will be called powernv-rng.

	If unsure, say Y.

	config HW_RANDOM_HISI
	tristate "Hisilicon Random Number Generator support"
	depends on HW_RANDOM && ARCH_HISI
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on Hisilicon Hip04 and Hip05 SoC.

	To compile this driver as a module, choose M here: the
	module will be called hisi-rng.

	If unsure, say Y.

	config HW_RANDOM_ST
	tristate "ST Microelectronics HW Random Number Generator support"
	depends on HW_RANDOM && ARCH_STI
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on STi series of SoCs.

	To compile this driver as a module, choose M here: the
	module will be called st-rng.

	config HW_RANDOM_XGENE
	tristate "APM X-Gene True Random Number Generator (TRNG) support"
	depends on HW_RANDOM && ARCH_XGENE
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on APM X-Gene SoC.

	To compile this driver as a module, choose M here: the
	module will be called xgene_rng.

	If unsure, say Y.

	config HW_RANDOM_STM32
	tristate "STMicroelectronics STM32 random number generator"
	depends on HW_RANDOM && (ARCH_STM32 \|\| COMPILE_TEST)
	depends on HAS_IOMEM
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on STM32 microcontrollers.

	To compile this driver as a module, choose M here: the
	module will be called stm32-rng.

	If unsure, say N.

	config HW_RANDOM_PIC32
	tristate "Microchip PIC32 Random Number Generator support"
	depends on HW_RANDOM && MACH_PIC32
	default y
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on a PIC32.

	To compile this driver as a module, choose M here. the
	module will be called pic32-rng.

	If unsure, say Y.

	config HW_RANDOM_POLARFIRE_SOC
	tristate "Microchip PolarFire SoC Random Number Generator support"
	depends on HW_RANDOM && POLARFIRE_SOC_SYS_CTRL
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on PolarFire SoC (MPFS).

	To compile this driver as a module, choose M here. The
	module will be called mfps_rng.

	If unsure, say N.


	config HW_RANDOM_MESON
	tristate "Amlogic Meson Random Number Generator support"
	depends on HW_RANDOM
	depends on ARCH_MESON \|\| COMPILE_TEST
	default y
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on Amlogic Meson SoCs.

	To compile this driver as a module, choose M here. the
	module will be called meson-rng.

	If unsure, say Y.

	config HW_RANDOM_CAVIUM
	tristate "Cavium ThunderX Random Number Generator support"
	depends on HW_RANDOM && PCI && ARCH_THUNDER
	default HW_RANDOM
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on Cavium SoCs.

	To compile this driver as a module, choose M here: the
	module will be called cavium_rng.

	If unsure, say Y.

	config HW_RANDOM_MTK
	tristate "Mediatek Random Number Generator support"
	depends on HW_RANDOM
	depends on ARCH_MEDIATEK \|\| COMPILE_TEST
	default y
	help
	This driver provides kernel-side support for the Random Number
	Generator hardware found on Mediatek SoCs.

	To compile this driver as a module, choose M here. the
	module will be called mtk-rng.

	If unsure, say Y.

	config HW_RANDOM_S390
	tristate "S390 True Random Number Generator support"
	depends on S390
	default HW_RANDOM
	help
	This driver provides kernel-side support for the True
	Random Number Generator available as CPACF extension
	on modern s390 hardware platforms.

	To compile this driver as a module, choose M here: the
	module will be called s390-trng.

	If unsure, say Y.

	config HW_RANDOM_EXYNOS
	tristate "Samsung Exynos True Random Number Generator support"
	depends on ARCH_EXYNOS \|\| COMPILE_TEST
	default HW_RANDOM
	help
	This driver provides support for the True Random Number
	Generator available in Exynos SoCs.

	To compile this driver as a module, choose M here: the module
	will be called exynos-trng.

	If unsure, say Y.

	config HW_RANDOM_OPTEE
	tristate "OP-TEE based Random Number Generator support"
	depends on OPTEE
	default HW_RANDOM
	help
	This driver provides support for OP-TEE based Random Number
	Generator on ARM SoCs where hardware entropy sources are not
	accessible to normal world (Linux).

	To compile this driver as a module, choose M here: the module
	will be called optee-rng.

	If unsure, say Y.

	config HW_RANDOM_NPCM
	tristate "NPCM Random Number Generator support"
	depends on ARCH_NPCM \|\| COMPILE_TEST
	default HW_RANDOM
	help
	This driver provides support for the Random Number
	Generator hardware available in Nuvoton NPCM SoCs.

	To compile this driver as a module, choose M here: the
	module will be called npcm-rng.

	If unsure, say Y.

	config HW_RANDOM_KEYSTONE
	depends on ARCH_KEYSTONE \|\| COMPILE_TEST
	depends on HAS_IOMEM && OF
	default HW_RANDOM
	tristate "TI Keystone NETCP SA Hardware random number generator"
	help
	This option enables Keystone's hardware random generator.

	config HW_RANDOM_CCTRNG
	tristate "Arm CryptoCell True Random Number Generator support"
	depends on HAS_IOMEM && OF
	help
	Say 'Y' to enable the True Random Number Generator driver for the
	Arm TrustZone CryptoCell family of processors.
	Currently the CryptoCell 713 and 703 are supported.
	The driver is supported only in SoC where Trusted Execution
	Environment is not used.
	Choose 'M' to compile this driver as a module. The module
	will be called cctrng.
	If unsure, say 'N'.

	config HW_RANDOM_XIPHERA
	tristate "Xiphera FPGA based True Random Number Generator support"
	depends on HAS_IOMEM
	help
	This driver provides kernel-side support for Xiphera True Random
	Number Generator Intellectual Property Core.

	To compile this driver as a module, choose M here: the
	module will be called xiphera-trng.

	config HW_RANDOM_ARM_SMCCC_TRNG
	tristate "Arm SMCCC TRNG firmware interface support"
	depends on HAVE_ARM_SMCCC_DISCOVERY
	default HW_RANDOM
	help
	Say 'Y' to enable the True Random Number Generator driver using
	the Arm SMCCC TRNG firmware interface. This reads entropy from
	higher exception levels (firmware, hypervisor). Uses SMCCC for
	communicating with the firmware:
	https://developer.arm.com/documentation/den0098/latest/

	To compile this driver as a module, choose M here: the
	module will be called arm_smccc_trng.

	config HW_RANDOM_CN10K
	tristate "Marvell CN10K Random Number Generator support"
	depends on HW_RANDOM && PCI && (ARM64 \|\| (64BIT && COMPILE_TEST))
	default HW_RANDOM
	help
	This driver provides support for the True Random Number
	generator available in Marvell CN10K SoCs.

	To compile this driver as a module, choose M here.
	The module will be called cn10k_rng. If unsure, say Y.

	config HW_RANDOM_JH7110
	tristate "StarFive JH7110 Random Number Generator support"
	depends on SOC_STARFIVE \|\| COMPILE_TEST
	help
	This driver provides support for the True Random Number
	Generator in StarFive JH7110 SoCs.

	To compile this driver as a module, choose M here.
	The module will be called jh7110-trng.

	endif # HW_RANDOM

	config UML_RANDOM
	depends on UML
	select HW_RANDOM
	tristate "UML Random Number Generator support"
	help
	This option enables UML's "hardware" random number generator. It
	attaches itself to the host's /dev/random, supplying as much entropy
	as the host has, rather than the small amount the UML gets from its
	own drivers. It registers itself as a rng-core driver thus providing
	a device which is usually called /dev/hwrng. This hardware random
	number generator does feed into the kernel's random number generator
	entropy pool.

	If unsure, say Y.