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
89 config HW_RANDOM_BCM2835
90 tristate "Broadcom BCM2835 Random Number Generator support"
91 depends on HW_RANDOM && ARCH_BCM2835
94 This driver provides kernel-side support for the Random Number
95 Generator hardware found on the Broadcom BCM2835 SoCs.
97 To compile this driver as a module, choose M here: the
98 module will be called bcm2835-rng
102 config HW_RANDOM_GEODE
103 tristate "AMD Geode HW Random Number Generator support"
104 depends on HW_RANDOM && X86_32 && PCI
107 This driver provides kernel-side support for the Random Number
108 Generator hardware found on the AMD Geode LX.
110 To compile this driver as a module, choose M here: the
111 module will be called geode-rng.
115 config HW_RANDOM_N2RNG
116 tristate "Niagara2 Random Number Generator support"
117 depends on HW_RANDOM && SPARC64
120 This driver provides kernel-side support for the Random Number
121 Generator hardware found on Niagara2 cpus.
123 To compile this driver as a module, choose M here: the
124 module will be called n2-rng.
129 tristate "VIA HW Random Number Generator support"
130 depends on HW_RANDOM && X86
133 This driver provides kernel-side support for the Random Number
134 Generator hardware found on VIA based motherboards.
136 To compile this driver as a module, choose M here: the
137 module will be called via-rng.
141 config HW_RANDOM_IXP4XX
142 tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support"
143 depends on HW_RANDOM && ARCH_IXP4XX
146 This driver provides kernel-side support for the Pseudo-Random
147 Number Generator hardware found on the Intel IXP45x/46x NPU.
149 To compile this driver as a module, choose M here: the
150 module will be called ixp4xx-rng.
154 config HW_RANDOM_OMAP
155 tristate "OMAP Random Number Generator support"
156 depends on HW_RANDOM && (ARCH_OMAP16XX || ARCH_OMAP2PLUS)
159 This driver provides kernel-side support for the Random Number
160 Generator hardware found on OMAP16xx, OMAP2/3/4/5 and AM33xx/AM43xx
161 multimedia processors.
163 To compile this driver as a module, choose M here: the
164 module will be called omap-rng.
168 config HW_RANDOM_OCTEON
169 tristate "Octeon Random Number Generator support"
170 depends on HW_RANDOM && CAVIUM_OCTEON_SOC
173 This driver provides kernel-side support for the Random Number
174 Generator hardware found on Octeon processors.
176 To compile this driver as a module, choose M here: the
177 module will be called octeon-rng.
181 config HW_RANDOM_PASEMI
182 tristate "PA Semi HW Random Number Generator support"
183 depends on HW_RANDOM && PPC_PASEMI
186 This driver provides kernel-side support for the Random Number
187 Generator hardware found on PA Semi PWRficient SoCs.
189 To compile this driver as a module, choose M here: the
190 module will be called pasemi-rng.
194 config HW_RANDOM_VIRTIO
195 tristate "VirtIO Random Number Generator support"
196 depends on HW_RANDOM && VIRTIO
198 This driver provides kernel-side support for the virtual Random Number
201 To compile this driver as a module, choose M here: the
202 module will be called virtio-rng. If unsure, say N.
204 config HW_RANDOM_TX4939
205 tristate "TX4939 Random Number Generator support"
206 depends on HW_RANDOM && SOC_TX4939
209 This driver provides kernel-side support for the Random Number
210 Generator hardware found on TX4939 SoC.
212 To compile this driver as a module, choose M here: the
213 module will be called tx4939-rng.
217 config HW_RANDOM_MXC_RNGA
218 tristate "Freescale i.MX RNGA Random Number Generator"
219 depends on HW_RANDOM && ARCH_HAS_RNGA
221 This driver provides kernel-side support for the Random Number
222 Generator hardware found on Freescale i.MX processors.
224 To compile this driver as a module, choose M here: the
225 module will be called mxc-rnga.
229 config HW_RANDOM_NOMADIK
230 tristate "ST-Ericsson Nomadik Random Number Generator support"
231 depends on HW_RANDOM && ARCH_NOMADIK
233 This driver provides kernel-side support for the Random Number
234 Generator hardware found on ST-Ericsson SoCs (8815 and 8500).
236 To compile this driver as a module, choose M here: the
237 module will be called nomadik-rng.
241 config HW_RANDOM_PICOXCELL
242 tristate "Picochip picoXcell true random number generator support"
243 depends on HW_RANDOM && ARCH_PICOXCELL && PICOXCELL_PC3X3
245 This driver provides kernel-side support for the Random Number
246 Generator hardware found on Picochip PC3x3 and later devices.
248 To compile this driver as a module, choose M here: the
249 module will be called picoxcell-rng.
253 config HW_RANDOM_PPC4XX
254 tristate "PowerPC 4xx generic true random number generator support"
255 depends on HW_RANDOM && PPC && 4xx
257 This driver provides the kernel-side support for the TRNG hardware
258 found in the security function of some PowerPC 4xx SoCs.
260 To compile this driver as a module, choose M here: the
261 module will be called ppc4xx-rng.
267 tristate "Hardware random number generator"
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
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.
280 config HW_RANDOM_PSERIES
281 tristate "pSeries HW Random Number Generator support"
282 depends on HW_RANDOM && PPC64 && IBMVIO
285 This driver provides kernel-side support for the Random Number
286 Generator hardware found on POWER7+ machines and above
288 To compile this driver as a module, choose M here: the
289 module will be called pseries-rng.
293 config HW_RANDOM_EXYNOS
294 tristate "EXYNOS HW random number generator support"
295 depends on HW_RANDOM && HAS_IOMEM && HAVE_CLK
297 This driver provides kernel-side support for the Random Number
298 Generator hardware found on EXYNOS SOCs.
300 To compile this driver as a module, choose M here: the
301 module will be called exynos-rng.
306 tristate "TPM HW Random Number Generator support"
307 depends on HW_RANDOM && TCG_TPM
310 This driver provides kernel-side support for the Random Number
311 Generator in the Trusted Platform Module
313 To compile this driver as a module, choose M here: the
314 module will be called tpm-rng.