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linux/drivers/char/hw_random/Kconfig
Linus Torvalds a103950e0d Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 
Pull crypto updates from Herbert Xu:
 "API:
   - Enforce the setting of keys for keyed aead/hash/skcipher
     algorithms.
   - Add multibuf speed tests in tcrypt.

  Algorithms:
   - Improve performance of sha3-generic.
   - Add native sha512 support on arm64.
   - Add v8.2 Crypto Extentions version of sha3/sm3 on arm64.
   - Avoid hmac nesting by requiring underlying algorithm to be unkeyed.
   - Add cryptd_max_cpu_qlen module parameter to cryptd.

  Drivers:
   - Add support for EIP97 engine in inside-secure.
   - Add inline IPsec support to chelsio.
   - Add RevB core support to crypto4xx.
   - Fix AEAD ICV check in crypto4xx.
   - Add stm32 crypto driver.
   - Add support for BCM63xx platforms in bcm2835 and remove bcm63xx.
   - Add Derived Key Protocol (DKP) support in caam.
   - Add Samsung Exynos True RNG driver.
   - Add support for Exynos5250+ SoCs in exynos PRNG driver"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (166 commits)
  crypto: picoxcell - Fix error handling in spacc_probe()
  crypto: arm64/sha512 - fix/improve new v8.2 Crypto Extensions code
  crypto: arm64/sm3 - new v8.2 Crypto Extensions implementation
  crypto: arm64/sha3 - new v8.2 Crypto Extensions implementation
  crypto: testmgr - add new testcases for sha3
  crypto: sha3-generic - export init/update/final routines
  crypto: sha3-generic - simplify code
  crypto: sha3-generic - rewrite KECCAK transform to help the compiler optimize
  crypto: sha3-generic - fixes for alignment and big endian operation
  crypto: aesni - handle zero length dst buffer
  crypto: artpec6 - remove select on non-existing CRYPTO_SHA384
  hwrng: bcm2835 - Remove redundant dev_err call in bcm2835_rng_probe()
  crypto: stm32 - remove redundant dev_err call in stm32_cryp_probe()
  crypto: axis - remove unnecessary platform_get_resource() error check
  crypto: testmgr - test misuse of result in ahash
  crypto: inside-secure - make function safexcel_try_push_requests static
  crypto: aes-generic - fix aes-generic regression on powerpc
  crypto: chelsio - Fix indentation warning
  crypto: arm64/sha1-ce - get rid of literal pool
  crypto: arm64/sha2-ce - move the round constant table to .rodata section
  ...
2018-01-31 14:22:45 -08:00

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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
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.
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