2 # Hardware Random Number Generator (RNG) configuration
6 tristate "Hardware Random Number Generator Core support"
9 Hardware Random Number Generator Core infrastructure.
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.
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
23 config HW_RANDOM_TIMERIOMEM
24 tristate "Timer IOMEM HW Random Number Generator support"
25 depends on HW_RANDOM && HAS_IOMEM
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.
32 To compile this driver as a module, choose M here: the
33 module will be called timeriomem-rng.
37 config HW_RANDOM_INTEL
38 tristate "Intel HW Random Number Generator support"
39 depends on HW_RANDOM && (X86 || IA64) && PCI
42 This driver provides kernel-side support for the Random Number
43 Generator hardware found on Intel i8xx-based motherboards.
45 To compile this driver as a module, choose M here: the
46 module will be called intel-rng.
51 tristate "AMD HW Random Number Generator support"
52 depends on HW_RANDOM && (X86 || PPC_MAPLE) && PCI
55 This driver provides kernel-side support for the Random Number
56 Generator hardware found on AMD 76x-based motherboards.
58 To compile this driver as a module, choose M here: the
59 module will be called amd-rng.
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)
68 This driver provides kernel-side support for the Random Number
69 Generator hardware found on Atmel AT91 devices.
71 To compile this driver as a module, choose M here: the
72 module will be called atmel-rng.
76 config HW_RANDOM_BCM63XX
77 tristate "Broadcom BCM63xx Random Number Generator support"
78 depends on HW_RANDOM && BCM63XX
81 This driver provides kernel-side support for the Random Number
82 Generator hardware found on the Broadcom BCM63xx SoCs.
84 To compile this driver as a module, choose M here: the
85 module will be called bcm63xx-rng
90 config HW_RANDOM_GEODE
91 tristate "AMD Geode HW Random Number Generator support"
92 depends on HW_RANDOM && X86_32 && PCI
95 This driver provides kernel-side support for the Random Number
96 Generator hardware found on the AMD Geode LX.
98 To compile this driver as a module, choose M here: the
99 module will be called geode-rng.
103 config HW_RANDOM_N2RNG
104 tristate "Niagara2 Random Number Generator support"
105 depends on HW_RANDOM && SPARC64
108 This driver provides kernel-side support for the Random Number
109 Generator hardware found on Niagara2 cpus.
111 To compile this driver as a module, choose M here: the
112 module will be called n2-rng.
117 tristate "VIA HW Random Number Generator support"
118 depends on HW_RANDOM && X86
121 This driver provides kernel-side support for the Random Number
122 Generator hardware found on VIA based motherboards.
124 To compile this driver as a module, choose M here: the
125 module will be called via-rng.
129 config HW_RANDOM_IXP4XX
130 tristate "Intel IXP4xx NPU HW Random Number Generator support"
131 depends on HW_RANDOM && ARCH_IXP4XX
134 This driver provides kernel-side support for the Random
135 Number Generator hardware found on the Intel IXP4xx NPU.
137 To compile this driver as a module, choose M here: the
138 module will be called ixp4xx-rng.
142 config HW_RANDOM_OMAP
143 tristate "OMAP Random Number Generator support"
144 depends on HW_RANDOM && (ARCH_OMAP16XX || ARCH_OMAP2)
147 This driver provides kernel-side support for the Random Number
148 Generator hardware found on OMAP16xx and OMAP24xx multimedia
151 To compile this driver as a module, choose M here: the
152 module will be called omap-rng.
156 config HW_RANDOM_OCTEON
157 tristate "Octeon Random Number Generator support"
158 depends on HW_RANDOM && CPU_CAVIUM_OCTEON
161 This driver provides kernel-side support for the Random Number
162 Generator hardware found on Octeon processors.
164 To compile this driver as a module, choose M here: the
165 module will be called octeon-rng.
169 config HW_RANDOM_PASEMI
170 tristate "PA Semi HW Random Number Generator support"
171 depends on HW_RANDOM && PPC_PASEMI
174 This driver provides kernel-side support for the Random Number
175 Generator hardware found on PA Semi PWRficient SoCs.
177 To compile this driver as a module, choose M here: the
178 module will be called pasemi-rng.
182 config HW_RANDOM_VIRTIO
183 tristate "VirtIO Random Number Generator support"
184 depends on HW_RANDOM && VIRTIO
186 This driver provides kernel-side support for the virtual Random Number
189 To compile this driver as a module, choose M here: the
190 module will be called virtio-rng. If unsure, say N.
192 config HW_RANDOM_TX4939
193 tristate "TX4939 Random Number Generator support"
194 depends on HW_RANDOM && SOC_TX4939
197 This driver provides kernel-side support for the Random Number
198 Generator hardware found on TX4939 SoC.
200 To compile this driver as a module, choose M here: the
201 module will be called tx4939-rng.
205 config HW_RANDOM_MXC_RNGA
206 tristate "Freescale i.MX RNGA Random Number Generator"
207 depends on HW_RANDOM && ARCH_HAS_RNGA
209 This driver provides kernel-side support for the Random Number
210 Generator hardware found on Freescale i.MX processors.
212 To compile this driver as a module, choose M here: the
213 module will be called mxc-rnga.
217 config HW_RANDOM_NOMADIK
218 tristate "ST-Ericsson Nomadik Random Number Generator support"
219 depends on HW_RANDOM && PLAT_NOMADIK
221 This driver provides kernel-side support for the Random Number
222 Generator hardware found on ST-Ericsson SoCs (8815 and 8500).
224 To compile this driver as a module, choose M here: the
225 module will be called nomadik-rng.
229 config HW_RANDOM_PICOXCELL
230 tristate "Picochip picoXcell true random number generator support"
231 depends on HW_RANDOM && ARCH_PICOXCELL && PICOXCELL_PC3X3
233 This driver provides kernel-side support for the Random Number
234 Generator hardware found on Picochip PC3x3 and later devices.
236 To compile this driver as a module, choose M here: the
237 module will be called picoxcell-rng.
241 config HW_RANDOM_PPC4XX
242 tristate "PowerPC 4xx generic true random number generator support"
243 depends on HW_RANDOM && PPC && 4xx
245 This driver provides the kernel-side support for the TRNG hardware
246 found in the security function of some PowerPC 4xx SoCs.
248 To compile this driver as a module, choose M here: the
249 module will be called ppc4xx-rng.
255 tristate "Hardware random number generator"
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
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.
268 config HW_RANDOM_PSERIES
269 tristate "pSeries HW Random Number Generator support"
270 depends on HW_RANDOM && PPC64 && IBMVIO
273 This driver provides kernel-side support for the Random Number
274 Generator hardware found on POWER7+ machines and above
276 To compile this driver as a module, choose M here: the
277 module will be called pseries-rng.
281 config HW_RANDOM_EXYNOS
282 tristate "EXYNOS HW random number generator support"
283 depends on HW_RANDOM && HAS_IOMEM && HAVE_CLK
285 This driver provides kernel-side support for the Random Number
286 Generator hardware found on EXYNOS SOCs.
288 To compile this driver as a module, choose M here: the
289 module will be called exynos-rng.