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+#
+# 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/hw_random, and which exposes one
+	  of possibly several hardware random number generators.
+
+	  These hardware random number generators do not feed directly
+	  into the kernel's random number generator.  That is usually
+	  handled by the "rngd" daemon.  Documentation/hw_random.txt
+	  has more information.
+
+	  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 && 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_BCM63XX
+	tristate "Broadcom BCM63xx Random Number Generator support"
+	depends on BCM63XX
+	default HW_RANDOM
+	---help---
+	  This driver provides kernel-side support for the Random Number
+	  Generator hardware found on the Broadcom BCM63xx SoCs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called bcm63xx-rng
+
+	  If unusure, say Y.
+
+config HW_RANDOM_BCM2835
+	tristate "Broadcom BCM2835 Random Number Generator support"
+	depends on ARCH_BCM2835
+	default HW_RANDOM
+	---help---
+	  This driver provides kernel-side support for the Random Number
+	  Generator hardware found on the Broadcom BCM2835 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 RNG200 support"
+	depends on ARCH_BCM_IPROC
+	default HW_RANDOM
+	---help---
+	  This driver provides kernel-side support for the RNG200
+	  hardware found on the Broadcom iProc 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
+	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
+	default HW_RANDOM
+ 	---help---
+ 	  This driver provides kernel-side support for the Random Number
+	  Generator hardware found on OMAP16xx, OMAP2/3/4/5 and AM33xx/AM43xx
+	  multimedia processors.
+
+	  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
+	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_TX4939
+	tristate "TX4939 Random Number Generator support"
+	depends on SOC_TX4939
+	default HW_RANDOM
+	---help---
+	  This driver provides kernel-side support for the Random Number
+	  Generator hardware found on TX4939 SoC.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called tx4939-rng.
+
+	  If unsure, say Y.
+
+config HW_RANDOM_MXC_RNGA
+	tristate "Freescale i.MX RNGA Random Number Generator"
+	depends on ARCH_HAS_RNGA
+	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_NOMADIK
+	tristate "ST-Ericsson Nomadik Random Number Generator support"
+	depends on ARCH_NOMADIK
+	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_PPC4XX
+	tristate "PowerPC 4xx generic true random number generator support"
+	depends on PPC && 4xx
+	default HW_RANDOM
+	---help---
+	 This driver provides the kernel-side support for the TRNG hardware
+	 found in the security function of some PowerPC 4xx SoCs.
+
+	 To compile this driver as a module, choose M here: the
+	 module will be called ppc4xx-rng.
+
+	 If unsure, say N.
+
+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_EXYNOS
+	tristate "EXYNOS HW random number generator support"
+	depends on ARCH_EXYNOS
+	default HW_RANDOM
+	---help---
+	  This driver provides kernel-side support for the Random Number
+	  Generator hardware found on EXYNOS SOCs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called exynos-rng.
+
+	  If unsure, say Y.
+
+config HW_RANDOM_TPM
+	tristate "TPM HW Random Number Generator support"
+	depends on TCG_TPM
+	default HW_RANDOM
+	---help---
+	  This driver provides kernel-side support for the Random Number
+	  Generator in the Trusted Platform Module
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called tpm-rng.
+
+	  If unsure, say Y.
+
+config HW_RANDOM_MSM
+	tristate "Qualcomm SoCs Random Number Generator support"
+	depends on HW_RANDOM && ARCH_QCOM
+	default HW_RANDOM
+	---help---
+	  This driver provides kernel-side support for the Random Number
+	  Generator hardware found on Qualcomm SoCs.
+
+	  To compile this driver as a module, choose M here. the
+	  module will be called msm-rng.
+
+	  If unsure, say Y.
+
+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.
+
+endif # HW_RANDOM
+
+config UML_RANDOM
+	depends on UML
+	tristate "Hardware random number generator"
+	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 standard hardware random number
+	  generator, major 10, minor 183, and the canonical device name is
+	  /dev/hwrng.
+	  The way to make use of this is to install the rng-tools package
+	  (check your distro, or download from
+	  http://sourceforge.net/projects/gkernel/).  rngd periodically reads
+	  /dev/hwrng and injects the entropy into /dev/random.