[thirdparty/linux.git] / drivers / char / hw_random / Kconfig

# 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) && 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_BCM2835 || 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 HAS_IOMEM && HAVE_CLK
	depends on SOC_IMX25 || 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_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_HISI_V2
	tristate "HiSilicon True Random Number Generator V2 support"
	depends on HW_RANDOM && ARM64 && ACPI
	default HW_RANDOM
	help
	  This driver provides kernel-side support for the True Random Number
	  Generator V2 hardware found on HiSilicon Hi1620 SoC.

	  To compile this driver as a module, choose M here: the
	  module will be called hisi-trng-v2.

	  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.

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
	default HW_RANDOM
	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
	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'.

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.
Commit	Line	Data
ec8f24b7	1	# SPDX-License-Identifier: GPL-2.0-only
844dd05f MB	2	#
	3	# Hardware Random Number Generator (RNG) configuration
	4	#
	5
02001618	6	menuconfig HW_RANDOM
fed806f4 JB	7	tristate "Hardware Random Number Generator Core support"
fed806f4 JB	8	default m
844dd05f MB	9	---help---
	10	Hardware Random Number Generator Core infrastructure.
	11
fed806f4	12	To compile this driver as a module, choose M here: the
537878d2	13	module will be called rng-core. This provides a device
cb2c316b	14	that's usually called /dev/hwrng, and which exposes one
537878d2 DB	15	of possibly several hardware random number generators.
537878d2 DB	16
60f3aaee PM	17	These hardware random number generators do feed into the
60f3aaee PM	18	kernel's random number generator entropy pool.
fed806f4	19
844dd05f	20	If unsure, say Y.
ca644bd5	21
02001618 JD	22	if HW_RANDOM
02001618 JD	23
9c3c133b AC	24	config HW_RANDOM_TIMERIOMEM
9c3c133b AC	25	tristate "Timer IOMEM HW Random Number Generator support"
02001618	26	depends on HAS_IOMEM
9c3c133b AC	27	---help---
	28	This driver provides kernel-side support for a generic Random
	29	Number Generator used by reading a 'dumb' iomem address that
	30	is to be read no faster than, for example, once a second;
	31	the default FPGA bitstream on the TS-7800 has such functionality.
	32
	33	To compile this driver as a module, choose M here: the
	34	module will be called timeriomem-rng.
	35
	36	If unsure, say Y.
	37
ca644bd5 MB	38	config HW_RANDOM_INTEL
ca644bd5 MB	39	tristate "Intel HW Random Number Generator support"
02001618	40	depends on (X86 \|\| IA64) && PCI
fed806f4	41	default HW_RANDOM
ca644bd5 MB	42	---help---
	43	This driver provides kernel-side support for the Random Number
	44	Generator hardware found on Intel i8xx-based motherboards.
	45
	46	To compile this driver as a module, choose M here: the
	47	module will be called intel-rng.
	48
	49	If unsure, say Y.
96d63c02 MB	50
	51	config HW_RANDOM_AMD
	52	tristate "AMD HW Random Number Generator support"
02001618	53	depends on (X86 \|\| PPC_MAPLE) && PCI
fed806f4	54	default HW_RANDOM
96d63c02 MB	55	---help---
	56	This driver provides kernel-side support for the Random Number
	57	Generator hardware found on AMD 76x-based motherboards.
	58
	59	To compile this driver as a module, choose M here: the
	60	module will be called amd-rng.
	61
	62	If unsure, say Y.
ef5d8627	63
677d3e2f PK	64	config HW_RANDOM_ATMEL
677d3e2f PK	65	tristate "Atmel Random Number Generator support"
4951db7e	66	depends on ARCH_AT91 && HAVE_CLK && OF
2d9cab51	67	default HW_RANDOM
677d3e2f PK	68	---help---
	69	This driver provides kernel-side support for the Random Number
	70	Generator hardware found on Atmel AT91 devices.
	71
	72	To compile this driver as a module, choose M here: the
	73	module will be called atmel-rng.
	74
	75	If unsure, say Y.
	76
8c4196a2	77	config HW_RANDOM_BCM2835
8705f24f FF	78	tristate "Broadcom BCM2835/BCM63xx Random Number Generator support"
	79	depends on ARCH_BCM2835 \|\| ARCH_BCM_NSP \|\| ARCH_BCM_5301X \|\| \
	80	ARCH_BCM_63XX \|\| BCM63XX \|\| BMIPS_GENERIC
8c4196a2 LR	81	default HW_RANDOM
	82	---help---
	83	This driver provides kernel-side support for the Random Number
8705f24f	84	Generator hardware found on the Broadcom BCM2835 and BCM63xx SoCs.
8c4196a2 LR	85
	86	To compile this driver as a module, choose M here: the
	87	module will be called bcm2835-rng
	88
	89	If unsure, say Y.
553072b2	90
c83d45d5	91	config HW_RANDOM_IPROC_RNG200
c3577f61	92	tristate "Broadcom iProc/STB RNG200 support"
0f95b09a	93	depends on ARCH_BCM_IPROC \|\| ARCH_BCM2835 \|\| ARCH_BRCMSTB
c83d45d5 SB	94	default HW_RANDOM
	95	---help---
	96	This driver provides kernel-side support for the RNG200
c3577f61	97	hardware found on the Broadcom iProc and STB SoCs.
c83d45d5 SB	98
	99	To compile this driver as a module, choose M here: the
	100	module will be called iproc-rng200
	101
	102	If unsure, say Y.
	103
ef5d8627 MB	104	config HW_RANDOM_GEODE
ef5d8627 MB	105	tristate "AMD Geode HW Random Number Generator support"
02001618	106	depends on X86_32 && PCI
fed806f4	107	default HW_RANDOM
ef5d8627 MB	108	---help---
	109	This driver provides kernel-side support for the Random Number
	110	Generator hardware found on the AMD Geode LX.
	111
	112	To compile this driver as a module, choose M here: the
	113	module will be called geode-rng.
	114
	115	If unsure, say Y.
13523363	116
ce087150 DM	117	config HW_RANDOM_N2RNG
ce087150 DM	118	tristate "Niagara2 Random Number Generator support"
02001618	119	depends on SPARC64
ce087150 DM	120	default HW_RANDOM
	121	---help---
	122	This driver provides kernel-side support for the Random Number
	123	Generator hardware found on Niagara2 cpus.
	124
	125	To compile this driver as a module, choose M here: the
	126	module will be called n2-rng.
	127
	128	If unsure, say Y.
	129
13523363 MB	130	config HW_RANDOM_VIA
13523363 MB	131	tristate "VIA HW Random Number Generator support"
02001618	132	depends on X86
fed806f4	133	default HW_RANDOM
13523363 MB	134	---help---
	135	This driver provides kernel-side support for the Random Number
	136	Generator hardware found on VIA based motherboards.
	137
	138	To compile this driver as a module, choose M here: the
	139	module will be called via-rng.
	140
	141	If unsure, say Y.
d7174bcb MB	142
d7174bcb MB	143	config HW_RANDOM_IXP4XX
553da857	144	tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support"
02001618	145	depends on ARCH_IXP4XX
fed806f4	146	default HW_RANDOM
d7174bcb	147	---help---
553da857 KH	148	This driver provides kernel-side support for the Pseudo-Random
553da857 KH	149	Number Generator hardware found on the Intel IXP45x/46x NPU.
d7174bcb MB	150
	151	To compile this driver as a module, choose M here: the
	152	module will be called ixp4xx-rng.
	153
	154	If unsure, say Y.
ebc915ad MB	155
	156	config HW_RANDOM_OMAP
	157	tristate "OMAP Random Number Generator support"
38321242	158	depends on ARCH_OMAP16XX \|\| ARCH_OMAP2PLUS \|\| ARCH_MVEBU
fed806f4	159	default HW_RANDOM
ebc915ad MB	160	---help---
ebc915ad MB	161	This driver provides kernel-side support for the Random Number
a9f5a62a RK	162	Generator hardware found on OMAP16xx, OMAP2/3/4/5, AM33xx/AM43xx
a9f5a62a RK	163	multimedia processors, and Marvell Armada 7k/8k SoCs.
ebc915ad MB	164
	165	To compile this driver as a module, choose M here: the
	166	module will be called omap-rng.
	167
	168	If unsure, say Y.
b8cb3448	169
1c6b7c21 PR	170	config HW_RANDOM_OMAP3_ROM
1c6b7c21 PR	171	tristate "OMAP3 ROM Random Number Generator support"
02001618	172	depends on ARCH_OMAP3
1c6b7c21 PR	173	default HW_RANDOM
	174	---help---
	175	This driver provides kernel-side support for the Random Number
	176	Generator hardware found on OMAP34xx processors.
	177
	178	To compile this driver as a module, choose M here: the
	179	module will be called omap3-rom-rng.
	180
	181	If unsure, say Y.
	182
f7557dc8 DD	183	config HW_RANDOM_OCTEON
f7557dc8 DD	184	tristate "Octeon Random Number Generator support"
02001618	185	depends on CAVIUM_OCTEON_SOC
f7557dc8 DD	186	default HW_RANDOM
	187	---help---
	188	This driver provides kernel-side support for the Random Number
	189	Generator hardware found on Octeon processors.
	190
	191	To compile this driver as a module, choose M here: the
	192	module will be called octeon-rng.
	193
	194	If unsure, say Y.
	195
b8cb3448 OJ	196	config HW_RANDOM_PASEMI
b8cb3448 OJ	197	tristate "PA Semi HW Random Number Generator support"
02001618	198	depends on PPC_PASEMI
b8cb3448 OJ	199	default HW_RANDOM
	200	---help---
	201	This driver provides kernel-side support for the Random Number
0d08a847	202	Generator hardware found on PA Semi PWRficient SoCs.
b8cb3448 OJ	203
	204	To compile this driver as a module, choose M here: the
	205	module will be called pasemi-rng.
	206
	207	If unsure, say Y.
	208
f7f510ec RR	209	config HW_RANDOM_VIRTIO
f7f510ec RR	210	tristate "VirtIO Random Number Generator support"
02001618	211	depends on VIRTIO
f7f510ec RR	212	---help---
	213	This driver provides kernel-side support for the virtual Random Number
	214	Generator hardware.
	215
	216	To compile this driver as a module, choose M here: the
	217	module will be called virtio-rng. If unsure, say N.
45001e92	218
049a947c AN	219	config HW_RANDOM_TX4939
049a947c AN	220	tristate "TX4939 Random Number Generator support"
02001618	221	depends on SOC_TX4939
049a947c AN	222	default HW_RANDOM
	223	---help---
	224	This driver provides kernel-side support for the Random Number
	225	Generator hardware found on TX4939 SoC.
	226
	227	To compile this driver as a module, choose M here: the
	228	module will be called tx4939-rng.
	229
	230	If unsure, say Y.
	231
45001e92 ACA	232	config HW_RANDOM_MXC_RNGA
45001e92 ACA	233	tristate "Freescale i.MX RNGA Random Number Generator"
f74bdd4c	234	depends on SOC_IMX31
2d9cab51	235	default HW_RANDOM
45001e92 ACA	236	---help---
	237	This driver provides kernel-side support for the Random Number
	238	Generator hardware found on Freescale i.MX processors.
	239
	240	To compile this driver as a module, choose M here: the
	241	module will be called mxc-rnga.
	242
	243	If unsure, say Y.
bc85b25e	244
1d544944 MK	245	config HW_RANDOM_IMX_RNGC
1d544944 MK	246	tristate "Freescale i.MX RNGC Random Number Generator"
fcdba3c3 UKK	247	depends on HAS_IOMEM && HAVE_CLK
fcdba3c3 UKK	248	depends on SOC_IMX25 \|\| COMPILE_TEST
1d544944 MK	249	default HW_RANDOM
	250	---help---
	251	This driver provides kernel-side support for the Random Number
	252	Generator Version C hardware found on some Freescale i.MX
	253	processors. Version B is also supported by this driver.
	254
	255	To compile this driver as a module, choose M here: the
	256	module will be called imx-rngc.
	257
	258	If unsure, say Y.
	259
bc85b25e AR	260	config HW_RANDOM_NOMADIK
bc85b25e AR	261	tristate "ST-Ericsson Nomadik Random Number Generator support"
02001618	262	depends on ARCH_NOMADIK
2d9cab51	263	default HW_RANDOM
bc85b25e AR	264	---help---
	265	This driver provides kernel-side support for the Random Number
	266	Generator hardware found on ST-Ericsson SoCs (8815 and 8500).
	267
	268	To compile this driver as a module, choose M here: the
	269	module will be called nomadik-rng.
	270
	271	If unsure, say Y.
5efb94ee	272
649e9ea0 KY	273	config HW_RANDOM_PSERIES
649e9ea0 KY	274	tristate "pSeries HW Random Number Generator support"
02001618	275	depends on PPC64 && IBMVIO
649e9ea0 KY	276	default HW_RANDOM
	277	---help---
	278	This driver provides kernel-side support for the Random Number
	279	Generator hardware found on POWER7+ machines and above
	280
	281	To compile this driver as a module, choose M here: the
	282	module will be called pseries-rng.
	283
	284	If unsure, say Y.
b329669e	285
66548e40 ME	286	config HW_RANDOM_POWERNV
66548e40 ME	287	tristate "PowerNV Random Number Generator support"
02001618	288	depends on PPC_POWERNV
66548e40 ME	289	default HW_RANDOM
	290	---help---
	291	This is the driver for Random Number Generator hardware found
	292	in POWER7+ and above machines for PowerNV platform.
	293
	294	To compile this driver as a module, choose M here: the
	295	module will be called powernv-rng.
	296
	297	If unsure, say Y.
	298
afc39d6e KW	299	config HW_RANDOM_HISI
	300	tristate "Hisilicon Random Number Generator support"
	301	depends on HW_RANDOM && ARCH_HISI
	302	default HW_RANDOM
	303	---help---
	304	This driver provides kernel-side support for the Random Number
	305	Generator hardware found on Hisilicon Hip04 and Hip05 SoC.
	306
	307	To compile this driver as a module, choose M here: the
	308	module will be called hisi-rng.
	309
	310	If unsure, say Y.
	311
3e90efd1 ZX	312	config HW_RANDOM_HISI_V2
	313	tristate "HiSilicon True Random Number Generator V2 support"
	314	depends on HW_RANDOM && ARM64 && ACPI
	315	default HW_RANDOM
	316	help
	317	This driver provides kernel-side support for the True Random Number
	318	Generator V2 hardware found on HiSilicon Hi1620 SoC.
	319
	320	To compile this driver as a module, choose M here: the
	321	module will be called hisi-trng-v2.
	322
	323	If unsure, say Y.
	324
4a4da53c LJ	325	config HW_RANDOM_ST
	326	tristate "ST Microelectronics HW Random Number Generator support"
	327	depends on HW_RANDOM && ARCH_STI
	328	---help---
	329	This driver provides kernel-side support for the Random Number
	330	Generator hardware found on STi series of SoCs.
	331
	332	To compile this driver as a module, choose M here: the
	333	module will be called st-rng.
	334
a91ae4eb FK	335	config HW_RANDOM_XGENE
	336	tristate "APM X-Gene True Random Number Generator (TRNG) support"
	337	depends on HW_RANDOM && ARCH_XGENE
	338	default HW_RANDOM
	339	---help---
	340	This driver provides kernel-side support for the Random Number
	341	Generator hardware found on APM X-Gene SoC.
	342
	343	To compile this driver as a module, choose M here: the
	344	module will be called xgene_rng.
	345
	346	If unsure, say Y.
	347
c6a97c42 DT	348	config HW_RANDOM_STM32
	349	tristate "STMicroelectronics STM32 random number generator"
	350	depends on HW_RANDOM && (ARCH_STM32 \|\| COMPILE_TEST)
625b4a98	351	depends on HAS_IOMEM
af513781	352	default HW_RANDOM
c6a97c42 DT	353	help
	354	This driver provides kernel-side support for the Random Number
	355	Generator hardware found on STM32 microcontrollers.
	356
	357	To compile this driver as a module, choose M here: the
	358	module will be called stm32-rng.
	359
	360	If unsure, say N.
	361
730d02e2 JH	362	config HW_RANDOM_PIC32
	363	tristate "Microchip PIC32 Random Number Generator support"
	364	depends on HW_RANDOM && MACH_PIC32
	365	default y
	366	---help---
	367	This driver provides kernel-side support for the Random Number
	368	Generator hardware found on a PIC32.
	369
	370	To compile this driver as a module, choose M here. the
	371	module will be called pic32-rng.
	372
	373	If unsure, say Y.
	374
e123be16 NA	375	config HW_RANDOM_MESON
	376	tristate "Amlogic Meson Random Number Generator support"
	377	depends on HW_RANDOM
	378	depends on ARCH_MESON \|\| COMPILE_TEST
	379	default y
	380	---help---
	381	This driver provides kernel-side support for the Random Number
	382	Generator hardware found on Amlogic Meson SoCs.
	383
	384	To compile this driver as a module, choose M here. the
	385	module will be called meson-rng.
	386
	387	If unsure, say Y.
	388
cc2f1908	389	config HW_RANDOM_CAVIUM
599ea01c KK	390	tristate "Cavium ThunderX Random Number Generator support"
	391	depends on HW_RANDOM && PCI && (ARM64 \|\| (COMPILE_TEST && 64BIT))
	392	default HW_RANDOM
	393	---help---
	394	This driver provides kernel-side support for the Random Number
	395	Generator hardware found on Cavium SoCs.
cc2f1908	396
599ea01c KK	397	To compile this driver as a module, choose M here: the
599ea01c KK	398	module will be called cavium_rng.
cc2f1908	399
599ea01c	400	If unsure, say Y.
cc2f1908	401
7701d1ff SW	402	config HW_RANDOM_MTK
	403	tristate "Mediatek Random Number Generator support"
	404	depends on HW_RANDOM
	405	depends on ARCH_MEDIATEK \|\| COMPILE_TEST
	406	default y
	407	---help---
	408	This driver provides kernel-side support for the Random Number
	409	Generator hardware found on Mediatek SoCs.
	410
	411	To compile this driver as a module, choose M here. the
	412	module will be called mtk-rng.
	413
	414	If unsure, say Y.
	415
bbcb478e HF	416	config HW_RANDOM_S390
	417	tristate "S390 True Random Number Generator support"
	418	depends on S390
	419	default HW_RANDOM
	420	---help---
	421	This driver provides kernel-side support for the True
	422	Random Number Generator available as CPACF extension
	423	on modern s390 hardware platforms.
	424
	425	To compile this driver as a module, choose M here: the
	426	module will be called s390-trng.
	427
	428	If unsure, say Y.
	429
6cd225cc ŁS	430	config HW_RANDOM_EXYNOS
	431	tristate "Samsung Exynos True Random Number Generator support"
	432	depends on ARCH_EXYNOS \|\| COMPILE_TEST
	433	default HW_RANDOM
	434	---help---
	435	This driver provides support for the True Random Number
	436	Generator available in Exynos SoCs.
	437
	438	To compile this driver as a module, choose M here: the module
	439	will be called exynos-trng.
	440
	441	If unsure, say Y.
5fe8b1cc SG	442
	443	config HW_RANDOM_OPTEE
	444	tristate "OP-TEE based Random Number Generator support"
	445	depends on OPTEE
	446	default HW_RANDOM
	447	help
	448	This driver provides support for OP-TEE based Random Number
	449	Generator on ARM SoCs where hardware entropy sources are not
	450	accessible to normal world (Linux).
	451
	452	To compile this driver as a module, choose M here: the module
	453	will be called optee-rng.
	454
	455	If unsure, say Y.
	456
c9842929 TM	457	config HW_RANDOM_NPCM
	458	tristate "NPCM Random Number Generator support"
	459	depends on ARCH_NPCM \|\| COMPILE_TEST
	460	default HW_RANDOM
	461	help
	462	This driver provides support for the Random Number
	463	Generator hardware available in Nuvoton NPCM SoCs.
	464
	465	To compile this driver as a module, choose M here: the
	466	module will be called npcm-rng.
	467
	468	If unsure, say Y.
	469
ace74b62 RD	470	config HW_RANDOM_KEYSTONE
	471	depends on ARCH_KEYSTONE \|\| COMPILE_TEST
	472	default HW_RANDOM
	473	tristate "TI Keystone NETCP SA Hardware random number generator"
	474	help
	475	This option enables Keystone's hardware random generator.
	476
a583ed31 HG	477	config HW_RANDOM_CCTRNG
a583ed31 HG	478	tristate "Arm CryptoCell True Random Number Generator support"
34d47aab	479	depends on HAS_IOMEM && OF
a583ed31	480	help
3e37f04f HG	481	Say 'Y' to enable the True Random Number Generator driver for the
	482	Arm TrustZone CryptoCell family of processors.
	483	Currently the CryptoCell 713 and 703 are supported.
	484	The driver is supported only in SoC where Trusted Execution
	485	Environment is not used.
	486	Choose 'M' to compile this driver as a module. The module
a583ed31	487	will be called cctrng.
3e37f04f	488	If unsure, say 'N'.
a583ed31	489
02001618 JD	490	endif # HW_RANDOM
02001618 JD	491
dc64ef00 JD	492	config UML_RANDOM
	493	depends on UML
	494	tristate "Hardware random number generator"
	495	help
	496	This option enables UML's "hardware" random number generator. It
	497	attaches itself to the host's /dev/random, supplying as much entropy
	498	as the host has, rather than the small amount the UML gets from its
	499	own drivers. It registers itself as a standard hardware random number
	500	generator, major 10, minor 183, and the canonical device name is
	501	/dev/hwrng.
	502	The way to make use of this is to install the rng-tools package
	503	(check your distro, or download from
	504	http://sourceforge.net/projects/gkernel/). rngd periodically reads
	505	/dev/hwrng and injects the entropy into /dev/random.