File-copy from v4.4.100
This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Please refer to that tree for all history prior to this point.
Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
new file mode 100644
index 0000000..dbf2271
--- /dev/null
+++ b/drivers/char/hw_random/Kconfig
@@ -0,0 +1,399 @@
+#
+# 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 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_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)
+ 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.
+
+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.