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

#
# Hardware Random Number Generator (RNG) configuration
#

config 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/hw_random, 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.

config HW_RANDOM_TIMERIOMEM
	tristate "Timer IOMEM HW Random Number Generator support"
	depends on HW_RANDOM && 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 HW_RANDOM && (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 HW_RANDOM && (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 HW_RANDOM && HAVE_CLK
	default (HW_RANDOM && ARCH_AT91)
	---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 HW_RANDOM && 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_GEODE
	tristate "AMD Geode HW Random Number Generator support"
	depends on HW_RANDOM && 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 HW_RANDOM && 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 HW_RANDOM && 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 HW_RANDOM && 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 HW_RANDOM && (ARCH_OMAP16XX || ARCH_OMAP2)
	default HW_RANDOM
 	---help---
 	  This driver provides kernel-side support for the Random Number
	  Generator hardware found on OMAP16xx and OMAP24xx 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_OCTEON
	tristate "Octeon Random Number Generator support"
	depends on HW_RANDOM && CPU_CAVIUM_OCTEON
	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 HW_RANDOM && 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 HW_RANDOM && 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 HW_RANDOM && 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 HW_RANDOM && ARCH_HAS_RNGA
	---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 HW_RANDOM && PLAT_NOMADIK
	---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_PICOXCELL
	tristate "Picochip picoXcell true random number generator support"
	depends on HW_RANDOM && ARCH_PICOXCELL && PICOXCELL_PC3X3
	---help---
	  This driver provides kernel-side support for the Random Number
	  Generator hardware found on Picochip PC3x3 and later devices.

	  To compile this driver as a module, choose M here: the
	  module will be called picoxcell-rng.

	  If unsure, say Y.

config HW_RANDOM_PPC4XX
	tristate "PowerPC 4xx generic true random number generator support"
	depends on HW_RANDOM && PPC && 4xx
	---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 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_PSERIES
	tristate "pSeries HW Random Number Generator support"
	depends on HW_RANDOM && 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_EXYNOS
	tristate "EXYNOS HW random number generator support"
	depends on HW_RANDOM && HAS_IOMEM && HAVE_CLK
	---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 HW_RANDOM && 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.
Commit	Line	Data
844dd05f MB	1	#
	2	# Hardware Random Number Generator (RNG) configuration
	3	#
	4
	5	config HW_RANDOM
fed806f4 JB	6	tristate "Hardware Random Number Generator Core support"
fed806f4 JB	7	default m
844dd05f MB	8	---help---
	9	Hardware Random Number Generator Core infrastructure.
	10
fed806f4	11	To compile this driver as a module, choose M here: the
537878d2 DB	12	module will be called rng-core. This provides a device
	13	that's usually called /dev/hw_random, and which exposes one
	14	of possibly several hardware random number generators.
	15
	16	These hardware random number generators do not feed directly
	17	into the kernel's random number generator. That is usually
	18	handled by the "rngd" daemon. Documentation/hw_random.txt
	19	has more information.
fed806f4	20
844dd05f	21	If unsure, say Y.
ca644bd5	22
9c3c133b AC	23	config HW_RANDOM_TIMERIOMEM
9c3c133b AC	24	tristate "Timer IOMEM HW Random Number Generator support"
e88cd6ff	25	depends on HW_RANDOM && HAS_IOMEM
9c3c133b AC	26	---help---
	27	This driver provides kernel-side support for a generic Random
	28	Number Generator used by reading a 'dumb' iomem address that
	29	is to be read no faster than, for example, once a second;
	30	the default FPGA bitstream on the TS-7800 has such functionality.
	31
	32	To compile this driver as a module, choose M here: the
	33	module will be called timeriomem-rng.
	34
	35	If unsure, say Y.
	36
ca644bd5 MB	37	config HW_RANDOM_INTEL
	38	tristate "Intel HW Random Number Generator support"
	39	depends on HW_RANDOM && (X86 \|\| IA64) && PCI
fed806f4	40	default HW_RANDOM
ca644bd5 MB	41	---help---
	42	This driver provides kernel-side support for the Random Number
	43	Generator hardware found on Intel i8xx-based motherboards.
	44
	45	To compile this driver as a module, choose M here: the
	46	module will be called intel-rng.
	47
	48	If unsure, say Y.
96d63c02 MB	49
	50	config HW_RANDOM_AMD
	51	tristate "AMD HW Random Number Generator support"
3023b5b6	52	depends on HW_RANDOM && (X86 \|\| PPC_MAPLE) && PCI
fed806f4	53	default HW_RANDOM
96d63c02 MB	54	---help---
	55	This driver provides kernel-side support for the Random Number
	56	Generator hardware found on AMD 76x-based motherboards.
	57
	58	To compile this driver as a module, choose M here: the
	59	module will be called amd-rng.
	60
	61	If unsure, say Y.
ef5d8627	62
677d3e2f PK	63	config HW_RANDOM_ATMEL
677d3e2f PK	64	tristate "Atmel Random Number Generator support"
1234f4ba	65	depends on HW_RANDOM && HAVE_CLK
028fdd87	66	default (HW_RANDOM && ARCH_AT91)
677d3e2f PK	67	---help---
	68	This driver provides kernel-side support for the Random Number
	69	Generator hardware found on Atmel AT91 devices.
	70
	71	To compile this driver as a module, choose M here: the
	72	module will be called atmel-rng.
	73
	74	If unsure, say Y.
	75
553072b2 FF	76	config HW_RANDOM_BCM63XX
	77	tristate "Broadcom BCM63xx Random Number Generator support"
	78	depends on HW_RANDOM && BCM63XX
	79	default HW_RANDOM
	80	---help---
	81	This driver provides kernel-side support for the Random Number
	82	Generator hardware found on the Broadcom BCM63xx SoCs.
	83
	84	To compile this driver as a module, choose M here: the
	85	module will be called bcm63xx-rng
	86
	87	If unusure, say Y.
	88
	89
ef5d8627 MB	90	config HW_RANDOM_GEODE
ef5d8627 MB	91	tristate "AMD Geode HW Random Number Generator support"
e199ece4	92	depends on HW_RANDOM && X86_32 && PCI
fed806f4	93	default HW_RANDOM
ef5d8627 MB	94	---help---
	95	This driver provides kernel-side support for the Random Number
	96	Generator hardware found on the AMD Geode LX.
	97
	98	To compile this driver as a module, choose M here: the
	99	module will be called geode-rng.
	100
	101	If unsure, say Y.
13523363	102
ce087150 DM	103	config HW_RANDOM_N2RNG
	104	tristate "Niagara2 Random Number Generator support"
	105	depends on HW_RANDOM && SPARC64
	106	default HW_RANDOM
	107	---help---
	108	This driver provides kernel-side support for the Random Number
	109	Generator hardware found on Niagara2 cpus.
	110
	111	To compile this driver as a module, choose M here: the
	112	module will be called n2-rng.
	113
	114	If unsure, say Y.
	115
13523363 MB	116	config HW_RANDOM_VIA
13523363 MB	117	tristate "VIA HW Random Number Generator support"
e9736c16	118	depends on HW_RANDOM && X86
fed806f4	119	default HW_RANDOM
13523363 MB	120	---help---
	121	This driver provides kernel-side support for the Random Number
	122	Generator hardware found on VIA based motherboards.
	123
	124	To compile this driver as a module, choose M here: the
	125	module will be called via-rng.
	126
	127	If unsure, say Y.
d7174bcb MB	128
d7174bcb MB	129	config HW_RANDOM_IXP4XX
553da857	130	tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support"
d7174bcb	131	depends on HW_RANDOM && ARCH_IXP4XX
fed806f4	132	default HW_RANDOM
d7174bcb	133	---help---
553da857 KH	134	This driver provides kernel-side support for the Pseudo-Random
553da857 KH	135	Number Generator hardware found on the Intel IXP45x/46x NPU.
d7174bcb MB	136
	137	To compile this driver as a module, choose M here: the
	138	module will be called ixp4xx-rng.
	139
	140	If unsure, say Y.
ebc915ad MB	141
	142	config HW_RANDOM_OMAP
	143	tristate "OMAP Random Number Generator support"
088ef950	144	depends on HW_RANDOM && (ARCH_OMAP16XX \|\| ARCH_OMAP2)
fed806f4	145	default HW_RANDOM
ebc915ad MB	146	---help---
	147	This driver provides kernel-side support for the Random Number
	148	Generator hardware found on OMAP16xx and OMAP24xx multimedia
	149	processors.
	150
	151	To compile this driver as a module, choose M here: the
	152	module will be called omap-rng.
	153
	154	If unsure, say Y.
b8cb3448	155
f7557dc8 DD	156	config HW_RANDOM_OCTEON
	157	tristate "Octeon Random Number Generator support"
	158	depends on HW_RANDOM && CPU_CAVIUM_OCTEON
	159	default HW_RANDOM
	160	---help---
	161	This driver provides kernel-side support for the Random Number
	162	Generator hardware found on Octeon processors.
	163
	164	To compile this driver as a module, choose M here: the
	165	module will be called octeon-rng.
	166
	167	If unsure, say Y.
	168
b8cb3448 OJ	169	config HW_RANDOM_PASEMI
	170	tristate "PA Semi HW Random Number Generator support"
	171	depends on HW_RANDOM && PPC_PASEMI
	172	default HW_RANDOM
	173	---help---
	174	This driver provides kernel-side support for the Random Number
0d08a847	175	Generator hardware found on PA Semi PWRficient SoCs.
b8cb3448 OJ	176
	177	To compile this driver as a module, choose M here: the
	178	module will be called pasemi-rng.
	179
	180	If unsure, say Y.
	181
f7f510ec RR	182	config HW_RANDOM_VIRTIO
	183	tristate "VirtIO Random Number Generator support"
	184	depends on HW_RANDOM && VIRTIO
	185	---help---
	186	This driver provides kernel-side support for the virtual Random Number
	187	Generator hardware.
	188
	189	To compile this driver as a module, choose M here: the
	190	module will be called virtio-rng. If unsure, say N.
45001e92	191
049a947c AN	192	config HW_RANDOM_TX4939
	193	tristate "TX4939 Random Number Generator support"
	194	depends on HW_RANDOM && SOC_TX4939
	195	default HW_RANDOM
	196	---help---
	197	This driver provides kernel-side support for the Random Number
	198	Generator hardware found on TX4939 SoC.
	199
	200	To compile this driver as a module, choose M here: the
	201	module will be called tx4939-rng.
	202
	203	If unsure, say Y.
	204
45001e92 ACA	205	config HW_RANDOM_MXC_RNGA
	206	tristate "Freescale i.MX RNGA Random Number Generator"
	207	depends on HW_RANDOM && ARCH_HAS_RNGA
	208	---help---
	209	This driver provides kernel-side support for the Random Number
	210	Generator hardware found on Freescale i.MX processors.
	211
	212	To compile this driver as a module, choose M here: the
	213	module will be called mxc-rnga.
	214
	215	If unsure, say Y.
bc85b25e AR	216
	217	config HW_RANDOM_NOMADIK
	218	tristate "ST-Ericsson Nomadik Random Number Generator support"
	219	depends on HW_RANDOM && PLAT_NOMADIK
	220	---help---
	221	This driver provides kernel-side support for the Random Number
	222	Generator hardware found on ST-Ericsson SoCs (8815 and 8500).
	223
	224	To compile this driver as a module, choose M here: the
	225	module will be called nomadik-rng.
	226
	227	If unsure, say Y.
5efb94ee JI	228
	229	config HW_RANDOM_PICOXCELL
	230	tristate "Picochip picoXcell true random number generator support"
	231	depends on HW_RANDOM && ARCH_PICOXCELL && PICOXCELL_PC3X3
	232	---help---
	233	This driver provides kernel-side support for the Random Number
	234	Generator hardware found on Picochip PC3x3 and later devices.
	235
	236	To compile this driver as a module, choose M here: the
	237	module will be called picoxcell-rng.
	238
	239	If unsure, say Y.
52527cf3 JB	240
	241	config HW_RANDOM_PPC4XX
	242	tristate "PowerPC 4xx generic true random number generator support"
	243	depends on HW_RANDOM && PPC && 4xx
	244	---help---
	245	This driver provides the kernel-side support for the TRNG hardware
	246	found in the security function of some PowerPC 4xx SoCs.
	247
	248	To compile this driver as a module, choose M here: the
	249	module will be called ppc4xx-rng.
	250
	251	If unsure, say N.
d805a786 AV	252
	253	config UML_RANDOM
	254	depends on UML
	255	tristate "Hardware random number generator"
	256	help
	257	This option enables UML's "hardware" random number generator. It
	258	attaches itself to the host's /dev/random, supplying as much entropy
	259	as the host has, rather than the small amount the UML gets from its
	260	own drivers. It registers itself as a standard hardware random number
	261	generator, major 10, minor 183, and the canonical device name is
	262	/dev/hwrng.
	263	The way to make use of this is to install the rng-tools package
	264	(check your distro, or download from
	265	http://sourceforge.net/projects/gkernel/). rngd periodically reads
	266	/dev/hwrng and injects the entropy into /dev/random.
649e9ea0 KY	267
	268	config HW_RANDOM_PSERIES
	269	tristate "pSeries HW Random Number Generator support"
	270	depends on HW_RANDOM && PPC64 && IBMVIO
	271	default HW_RANDOM
	272	---help---
	273	This driver provides kernel-side support for the Random Number
	274	Generator hardware found on POWER7+ machines and above
	275
	276	To compile this driver as a module, choose M here: the
	277	module will be called pseries-rng.
	278
	279	If unsure, say Y.
b329669e JL	280
	281	config HW_RANDOM_EXYNOS
	282	tristate "EXYNOS HW random number generator support"
	283	depends on HW_RANDOM && HAS_IOMEM && HAVE_CLK
	284	---help---
	285	This driver provides kernel-side support for the Random Number
	286	Generator hardware found on EXYNOS SOCs.
	287
	288	To compile this driver as a module, choose M here: the
	289	module will be called exynos-rng.
	290
	291	If unsure, say Y.
578b016f KY	292
	293	config HW_RANDOM_TPM
	294	tristate "TPM HW Random Number Generator support"
	295	depends on HW_RANDOM && TCG_TPM
	296	default HW_RANDOM
	297	---help---
	298	This driver provides kernel-side support for the Random Number
	299	Generator in the Trusted Platform Module
	300
	301	To compile this driver as a module, choose M here: the
	302	module will be called tpm-rng.
	303
	304	If unsure, say Y.