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Linux/drivers/char/hw_random/Kconfig

  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_OMAP2PLUS)
157         default HW_RANDOM
158         ---help---
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.
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_OMAP3_ROM
169         tristate "OMAP3 ROM Random Number Generator support"
170         depends on HW_RANDOM && ARCH_OMAP3
171         default HW_RANDOM
172         ---help---
173           This driver provides kernel-side support for the Random Number
174           Generator hardware found on OMAP34xx processors.
175 
176           To compile this driver as a module, choose M here: the
177           module will be called omap3-rom-rng.
178 
179           If unsure, say Y.
180 
181 config HW_RANDOM_OCTEON
182         tristate "Octeon Random Number Generator support"
183         depends on HW_RANDOM && CAVIUM_OCTEON_SOC
184         default HW_RANDOM
185         ---help---
186           This driver provides kernel-side support for the Random Number
187           Generator hardware found on Octeon processors.
188 
189           To compile this driver as a module, choose M here: the
190           module will be called octeon-rng.
191 
192           If unsure, say Y.
193 
194 config HW_RANDOM_PASEMI
195         tristate "PA Semi HW Random Number Generator support"
196         depends on HW_RANDOM && PPC_PASEMI
197         default HW_RANDOM
198         ---help---
199           This driver provides kernel-side support for the Random Number
200           Generator hardware found on PA Semi PWRficient SoCs.
201 
202           To compile this driver as a module, choose M here: the
203           module will be called pasemi-rng.
204 
205           If unsure, say Y.
206 
207 config HW_RANDOM_VIRTIO
208         tristate "VirtIO Random Number Generator support"
209         depends on HW_RANDOM && VIRTIO
210         ---help---
211           This driver provides kernel-side support for the virtual Random Number
212           Generator hardware.
213 
214           To compile this driver as a module, choose M here: the
215           module will be called virtio-rng.  If unsure, say N.
216 
217 config HW_RANDOM_TX4939
218         tristate "TX4939 Random Number Generator support"
219         depends on HW_RANDOM && SOC_TX4939
220         default HW_RANDOM
221         ---help---
222           This driver provides kernel-side support for the Random Number
223           Generator hardware found on TX4939 SoC.
224 
225           To compile this driver as a module, choose M here: the
226           module will be called tx4939-rng.
227 
228           If unsure, say Y.
229 
230 config HW_RANDOM_MXC_RNGA
231         tristate "Freescale i.MX RNGA Random Number Generator"
232         depends on HW_RANDOM && ARCH_HAS_RNGA
233         ---help---
234           This driver provides kernel-side support for the Random Number
235           Generator hardware found on Freescale i.MX processors.
236 
237           To compile this driver as a module, choose M here: the
238           module will be called mxc-rnga.
239 
240           If unsure, say Y.
241 
242 config HW_RANDOM_NOMADIK
243         tristate "ST-Ericsson Nomadik Random Number Generator support"
244         depends on HW_RANDOM && ARCH_NOMADIK
245         ---help---
246           This driver provides kernel-side support for the Random Number
247           Generator hardware found on ST-Ericsson SoCs (8815 and 8500).
248 
249           To compile this driver as a module, choose M here: the
250           module will be called nomadik-rng.
251 
252           If unsure, say Y.
253 
254 config HW_RANDOM_PICOXCELL
255         tristate "Picochip picoXcell true random number generator support"
256         depends on HW_RANDOM && ARCH_PICOXCELL && PICOXCELL_PC3X3
257         ---help---
258           This driver provides kernel-side support for the Random Number
259           Generator hardware found on Picochip PC3x3 and later devices.
260 
261           To compile this driver as a module, choose M here: the
262           module will be called picoxcell-rng.
263 
264           If unsure, say Y.
265 
266 config HW_RANDOM_PPC4XX
267         tristate "PowerPC 4xx generic true random number generator support"
268         depends on HW_RANDOM && PPC && 4xx
269         ---help---
270          This driver provides the kernel-side support for the TRNG hardware
271          found in the security function of some PowerPC 4xx SoCs.
272 
273          To compile this driver as a module, choose M here: the
274          module will be called ppc4xx-rng.
275 
276          If unsure, say N.
277 
278 config UML_RANDOM
279         depends on UML
280         tristate "Hardware random number generator"
281         help
282           This option enables UML's "hardware" random number generator.  It
283           attaches itself to the host's /dev/random, supplying as much entropy
284           as the host has, rather than the small amount the UML gets from its
285           own drivers.  It registers itself as a standard hardware random number
286           generator, major 10, minor 183, and the canonical device name is
287           /dev/hwrng.
288           The way to make use of this is to install the rng-tools package
289           (check your distro, or download from
290           http://sourceforge.net/projects/gkernel/).  rngd periodically reads
291           /dev/hwrng and injects the entropy into /dev/random.
292 
293 config HW_RANDOM_PSERIES
294         tristate "pSeries HW Random Number Generator support"
295         depends on HW_RANDOM && PPC64 && IBMVIO
296         default HW_RANDOM
297         ---help---
298           This driver provides kernel-side support for the Random Number
299           Generator hardware found on POWER7+ machines and above
300 
301           To compile this driver as a module, choose M here: the
302           module will be called pseries-rng.
303 
304           If unsure, say Y.
305 
306 config HW_RANDOM_POWERNV
307         tristate "PowerNV Random Number Generator support"
308         depends on HW_RANDOM && PPC_POWERNV
309         default HW_RANDOM
310         ---help---
311           This is the driver for Random Number Generator hardware found
312           in POWER7+ and above machines for PowerNV platform.
313 
314           To compile this driver as a module, choose M here: the
315           module will be called powernv-rng.
316 
317           If unsure, say Y.
318 
319 config HW_RANDOM_EXYNOS
320         tristate "EXYNOS HW random number generator support"
321         depends on HW_RANDOM && HAS_IOMEM && HAVE_CLK
322         ---help---
323           This driver provides kernel-side support for the Random Number
324           Generator hardware found on EXYNOS SOCs.
325 
326           To compile this driver as a module, choose M here: the
327           module will be called exynos-rng.
328 
329           If unsure, say Y.
330 
331 config HW_RANDOM_TPM
332         tristate "TPM HW Random Number Generator support"
333         depends on HW_RANDOM && TCG_TPM
334         default HW_RANDOM
335         ---help---
336           This driver provides kernel-side support for the Random Number
337           Generator in the Trusted Platform Module
338 
339           To compile this driver as a module, choose M here: the
340           module will be called tpm-rng.
341 
342           If unsure, say Y.
343 
344 config HW_RANDOM_MSM
345         tristate "Qualcomm SoCs Random Number Generator support"
346         depends on HW_RANDOM && ARCH_QCOM
347         ---help---
348           This driver provides kernel-side support for the Random Number
349           Generator hardware found on Qualcomm SoCs.
350 
351           To compile this driver as a module, choose M here. the
352           module will be called msm-rng.
353 
354           If unsure, say Y.

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