[GitHub/mt8127/android_kernel_alcatel_ttab.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_BCM2835
	tristate "Broadcom BCM2835 Random Number Generator support"
	depends on HW_RANDOM && 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_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 && ARCH_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
	1	#
	2	# Hardware Random Number Generator (RNG) configuration
	3	#
	4
	5	config HW_RANDOM
	6	tristate "Hardware Random Number Generator Core support"
	7	default m
	8	---help---
	9	Hardware Random Number Generator Core infrastructure.
	10
	11	To compile this driver as a module, choose M here: the
	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.
	20
	21	If unsure, say Y.
	22
	23	config HW_RANDOM_TIMERIOMEM
	24	tristate "Timer IOMEM HW Random Number Generator support"
	25	depends on HW_RANDOM && HAS_IOMEM
	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
	37	config HW_RANDOM_INTEL
	38	tristate "Intel HW Random Number Generator support"
	39	depends on HW_RANDOM && (X86 \|\| IA64) && PCI
	40	default HW_RANDOM
	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.
	49
	50	config HW_RANDOM_AMD
	51	tristate "AMD HW Random Number Generator support"
	52	depends on HW_RANDOM && (X86 \|\| PPC_MAPLE) && PCI
	53	default HW_RANDOM
	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.
	62
	63	config HW_RANDOM_ATMEL
	64	tristate "Atmel Random Number Generator support"
	65	depends on HW_RANDOM && HAVE_CLK
	66	default (HW_RANDOM && ARCH_AT91)
	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
	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	config HW_RANDOM_BCM2835
	90	tristate "Broadcom BCM2835 Random Number Generator support"
	91	depends on HW_RANDOM && ARCH_BCM2835
	92	default HW_RANDOM
	93	---help---
	94	This driver provides kernel-side support for the Random Number
	95	Generator hardware found on the Broadcom BCM2835 SoCs.
	96
	97	To compile this driver as a module, choose M here: the
	98	module will be called bcm2835-rng
	99
	100	If unsure, say Y.
	101
	102	config HW_RANDOM_GEODE
	103	tristate "AMD Geode HW Random Number Generator support"
	104	depends on HW_RANDOM && X86_32 && PCI
	105	default HW_RANDOM
	106	---help---
	107	This driver provides kernel-side support for the Random Number
	108	Generator hardware found on the AMD Geode LX.
	109
	110	To compile this driver as a module, choose M here: the
	111	module will be called geode-rng.
	112
	113	If unsure, say Y.
	114
	115	config HW_RANDOM_N2RNG
	116	tristate "Niagara2 Random Number Generator support"
	117	depends on HW_RANDOM && SPARC64
	118	default HW_RANDOM
	119	---help---
	120	This driver provides kernel-side support for the Random Number
	121	Generator hardware found on Niagara2 cpus.
	122
	123	To compile this driver as a module, choose M here: the
	124	module will be called n2-rng.
	125
	126	If unsure, say Y.
	127
	128	config HW_RANDOM_VIA
	129	tristate "VIA HW Random Number Generator support"
	130	depends on HW_RANDOM && X86
	131	default HW_RANDOM
	132	---help---
	133	This driver provides kernel-side support for the Random Number
	134	Generator hardware found on VIA based motherboards.
	135
	136	To compile this driver as a module, choose M here: the
	137	module will be called via-rng.
	138
	139	If unsure, say Y.
	140
	141	config HW_RANDOM_IXP4XX
	142	tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support"
	143	depends on HW_RANDOM && ARCH_IXP4XX
	144	default HW_RANDOM
	145	---help---
	146	This driver provides kernel-side support for the Pseudo-Random
	147	Number Generator hardware found on the Intel IXP45x/46x NPU.
	148
	149	To compile this driver as a module, choose M here: the
	150	module will be called ixp4xx-rng.
	151
	152	If unsure, say Y.
	153
	154	config HW_RANDOM_OMAP
	155	tristate "OMAP Random Number Generator support"
	156	depends on HW_RANDOM && (ARCH_OMAP16XX \|\| ARCH_OMAP2)
	157	default HW_RANDOM
	158	---help---
	159	This driver provides kernel-side support for the Random Number
	160	Generator hardware found on OMAP16xx and OMAP24xx multimedia
	161	processors.
	162
	163	To compile this driver as a module, choose M here: the
	164	module will be called omap-rng.
	165
	166	If unsure, say Y.
	167
	168	config HW_RANDOM_OCTEON
	169	tristate "Octeon Random Number Generator support"
	170	depends on HW_RANDOM && CPU_CAVIUM_OCTEON
	171	default HW_RANDOM
	172	---help---
	173	This driver provides kernel-side support for the Random Number
	174	Generator hardware found on Octeon processors.
	175
	176	To compile this driver as a module, choose M here: the
	177	module will be called octeon-rng.
	178
	179	If unsure, say Y.
	180
	181	config HW_RANDOM_PASEMI
	182	tristate "PA Semi HW Random Number Generator support"
	183	depends on HW_RANDOM && PPC_PASEMI
	184	default HW_RANDOM
	185	---help---
	186	This driver provides kernel-side support for the Random Number
	187	Generator hardware found on PA Semi PWRficient SoCs.
	188
	189	To compile this driver as a module, choose M here: the
	190	module will be called pasemi-rng.
	191
	192	If unsure, say Y.
	193
	194	config HW_RANDOM_VIRTIO
	195	tristate "VirtIO Random Number Generator support"
	196	depends on HW_RANDOM && VIRTIO
	197	---help---
	198	This driver provides kernel-side support for the virtual Random Number
	199	Generator hardware.
	200
	201	To compile this driver as a module, choose M here: the
	202	module will be called virtio-rng. If unsure, say N.
	203
	204	config HW_RANDOM_TX4939
	205	tristate "TX4939 Random Number Generator support"
	206	depends on HW_RANDOM && SOC_TX4939
	207	default HW_RANDOM
	208	---help---
	209	This driver provides kernel-side support for the Random Number
	210	Generator hardware found on TX4939 SoC.
	211
	212	To compile this driver as a module, choose M here: the
	213	module will be called tx4939-rng.
	214
	215	If unsure, say Y.
	216
	217	config HW_RANDOM_MXC_RNGA
	218	tristate "Freescale i.MX RNGA Random Number Generator"
	219	depends on HW_RANDOM && ARCH_HAS_RNGA
	220	---help---
	221	This driver provides kernel-side support for the Random Number
	222	Generator hardware found on Freescale i.MX processors.
	223
	224	To compile this driver as a module, choose M here: the
	225	module will be called mxc-rnga.
	226
	227	If unsure, say Y.
	228
	229	config HW_RANDOM_NOMADIK
	230	tristate "ST-Ericsson Nomadik Random Number Generator support"
	231	depends on HW_RANDOM && ARCH_NOMADIK
	232	---help---
	233	This driver provides kernel-side support for the Random Number
	234	Generator hardware found on ST-Ericsson SoCs (8815 and 8500).
	235
	236	To compile this driver as a module, choose M here: the
	237	module will be called nomadik-rng.
	238
	239	If unsure, say Y.
	240
	241	config HW_RANDOM_PICOXCELL
	242	tristate "Picochip picoXcell true random number generator support"
	243	depends on HW_RANDOM && ARCH_PICOXCELL && PICOXCELL_PC3X3
	244	---help---
	245	This driver provides kernel-side support for the Random Number
	246	Generator hardware found on Picochip PC3x3 and later devices.
	247
	248	To compile this driver as a module, choose M here: the
	249	module will be called picoxcell-rng.
	250
	251	If unsure, say Y.
	252
	253	config HW_RANDOM_PPC4XX
	254	tristate "PowerPC 4xx generic true random number generator support"
	255	depends on HW_RANDOM && PPC && 4xx
	256	---help---
	257	This driver provides the kernel-side support for the TRNG hardware
	258	found in the security function of some PowerPC 4xx SoCs.
	259
	260	To compile this driver as a module, choose M here: the
	261	module will be called ppc4xx-rng.
	262
	263	If unsure, say N.
	264
	265	config UML_RANDOM
	266	depends on UML
	267	tristate "Hardware random number generator"
	268	help
	269	This option enables UML's "hardware" random number generator. It
	270	attaches itself to the host's /dev/random, supplying as much entropy
	271	as the host has, rather than the small amount the UML gets from its
	272	own drivers. It registers itself as a standard hardware random number
	273	generator, major 10, minor 183, and the canonical device name is
	274	/dev/hwrng.
	275	The way to make use of this is to install the rng-tools package
	276	(check your distro, or download from
	277	http://sourceforge.net/projects/gkernel/). rngd periodically reads
	278	/dev/hwrng and injects the entropy into /dev/random.
	279
	280	config HW_RANDOM_PSERIES
	281	tristate "pSeries HW Random Number Generator support"
	282	depends on HW_RANDOM && PPC64 && IBMVIO
	283	default HW_RANDOM
	284	---help---
	285	This driver provides kernel-side support for the Random Number
	286	Generator hardware found on POWER7+ machines and above
	287
	288	To compile this driver as a module, choose M here: the
	289	module will be called pseries-rng.
	290
	291	If unsure, say Y.
	292
	293	config HW_RANDOM_EXYNOS
	294	tristate "EXYNOS HW random number generator support"
	295	depends on HW_RANDOM && HAS_IOMEM && HAVE_CLK
	296	---help---
	297	This driver provides kernel-side support for the Random Number
	298	Generator hardware found on EXYNOS SOCs.
	299
	300	To compile this driver as a module, choose M here: the
	301	module will be called exynos-rng.
	302
	303	If unsure, say Y.
	304
	305	config HW_RANDOM_TPM
	306	tristate "TPM HW Random Number Generator support"
	307	depends on HW_RANDOM && TCG_TPM
	308	default HW_RANDOM
	309	---help---
	310	This driver provides kernel-side support for the Random Number
	311	Generator in the Trusted Platform Module
	312
	313	To compile this driver as a module, choose M here: the
	314	module will be called tpm-rng.
	315
	316	If unsure, say Y.