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usr
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kernels
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4.18.0-553.157.1.el8_10.x86_64
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char
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hw_random
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/usr/src/kernels/4.18.0-553.157.1.el8_10.x86_64/drivers/char/hw_random
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/usr/src/kernels/4.18.0-553.157.1.el8_10.x86_64/drivers/char/hw_random/Kconfig
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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/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 && 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_BCM2835 tristate "Broadcom BCM2835/BCM63xx Random Number Generator support" depends on ARCH_BCM2835 || ARCH_BCM_NSP || ARCH_BCM_5301X || \ ARCH_BCM_63XX || BCM63XX || BMIPS_GENERIC 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_BRCMSTB 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 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 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 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 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 ARCH_MXC 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_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_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_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_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_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 && (ARM64 || (COMPILE_TEST && 64BIT)) 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. 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. config HW_RANDOM_KEYSTONE depends on ARCH_KEYSTONE default HW_RANDOM tristate "TI Keystone NETCP SA Hardware random number generator" help This option enables Keystone's hardware random generator.
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