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+# 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 || COMPILE_TEST) && 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 || COMPILE_TEST)
+ depends on PCI && HAS_IOPORT_MAP
+ 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)
+ 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 || COMPILE_TEST)
+ depends on 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 || (PPC && COMPILE_TEST)
+ 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 || COMPILE_TEST
+ 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
+ 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 MACH_JZ4780 || MACH_X1000 || COMPILE_TEST
+ 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 MACH_X1830 || COMPILE_TEST
+ 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 ARCH_HISI || COMPILE_TEST
+ 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_HISTB
+ tristate "Hisilicon STB Random Number Generator support"
+ depends on ARCH_HISI || COMPILE_TEST
+ default ARCH_HISI
+ help
+ This driver provides kernel-side support for the Random Number
+ Generator hardware found on Hisilicon Hi37xx SoC.
+
+ To compile this driver as a module, choose M here: the
+ module will be called histb-rng.
+
+config HW_RANDOM_ST
+ tristate "ST Microelectronics HW Random Number Generator support"
+ depends on ARCH_STI || COMPILE_TEST
+ 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 ARCH_XGENE || COMPILE_TEST
+ 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 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 MACH_PIC32 || COMPILE_TEST
+ default HW_RANDOM if MACH_PIC32
+ 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 ARCH_MESON || COMPILE_TEST
+ depends on HAS_IOMEM && OF
+ default HW_RANDOM if ARCH_MESON
+ 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 PCI
+ depends on ARCH_THUNDER || (ARM64 && COMPILE_TEST)
+ 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 ARCH_MEDIATEK || COMPILE_TEST
+ depends on HAS_IOMEM && OF
+ default HW_RANDOM if ARCH_MEDIATEK
+ 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
+ depends on HAS_IOMEM
+ default HW_RANDOM if ARCH_EXYNOS
+ 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
+ depends on HAS_IOMEM
+ default HW_RANDOM if ARCH_NPCM
+ 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.