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Linux/drivers/char/hw_random/Kconfig

  1 #
  2 # Hardware Random Number Generator (RNG) configuration
  3 #
  4 
  5 menuconfig 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 if HW_RANDOM
 24 
 25 config HW_RANDOM_TIMERIOMEM
 26         tristate "Timer IOMEM HW Random Number Generator support"
 27         depends on HAS_IOMEM
 28         ---help---
 29           This driver provides kernel-side support for a generic Random
 30           Number Generator used by reading a 'dumb' iomem address that
 31           is to be read no faster than, for example, once a second;
 32           the default FPGA bitstream on the TS-7800 has such functionality.
 33 
 34           To compile this driver as a module, choose M here: the
 35           module will be called timeriomem-rng.
 36 
 37           If unsure, say Y.
 38 
 39 config HW_RANDOM_INTEL
 40         tristate "Intel HW Random Number Generator support"
 41         depends on (X86 || IA64) && PCI
 42         default HW_RANDOM
 43         ---help---
 44           This driver provides kernel-side support for the Random Number
 45           Generator hardware found on Intel i8xx-based motherboards.
 46 
 47           To compile this driver as a module, choose M here: the
 48           module will be called intel-rng.
 49 
 50           If unsure, say Y.
 51 
 52 config HW_RANDOM_AMD
 53         tristate "AMD HW Random Number Generator support"
 54         depends on (X86 || PPC_MAPLE) && PCI
 55         default HW_RANDOM
 56         ---help---
 57           This driver provides kernel-side support for the Random Number
 58           Generator hardware found on AMD 76x-based motherboards.
 59 
 60           To compile this driver as a module, choose M here: the
 61           module will be called amd-rng.
 62 
 63           If unsure, say Y.
 64 
 65 config HW_RANDOM_ATMEL
 66         tristate "Atmel Random Number Generator support"
 67         depends on ARCH_AT91 && HAVE_CLK && OF
 68         default HW_RANDOM
 69         ---help---
 70           This driver provides kernel-side support for the Random Number
 71           Generator hardware found on Atmel AT91 devices.
 72 
 73           To compile this driver as a module, choose M here: the
 74           module will be called atmel-rng.
 75 
 76           If unsure, say Y.
 77 
 78 config HW_RANDOM_BCM63XX
 79         tristate "Broadcom BCM63xx Random Number Generator support"
 80         depends on BCM63XX
 81         default HW_RANDOM
 82         ---help---
 83           This driver provides kernel-side support for the Random Number
 84           Generator hardware found on the Broadcom BCM63xx SoCs.
 85 
 86           To compile this driver as a module, choose M here: the
 87           module will be called bcm63xx-rng
 88 
 89           If unusure, say Y.
 90 
 91 config HW_RANDOM_BCM2835
 92         tristate "Broadcom BCM2835 Random Number Generator support"
 93         depends on ARCH_BCM2835
 94         default HW_RANDOM
 95         ---help---
 96           This driver provides kernel-side support for the Random Number
 97           Generator hardware found on the Broadcom BCM2835 SoCs.
 98 
 99           To compile this driver as a module, choose M here: the
100           module will be called bcm2835-rng
101 
102           If unsure, say Y.
103 
104 config HW_RANDOM_IPROC_RNG200
105         tristate "Broadcom iProc RNG200 support"
106         depends on ARCH_BCM_IPROC
107         default HW_RANDOM
108         ---help---
109           This driver provides kernel-side support for the RNG200
110           hardware found on the Broadcom iProc SoCs.
111 
112           To compile this driver as a module, choose M here: the
113           module will be called iproc-rng200
114 
115           If unsure, say Y.
116 
117 config HW_RANDOM_GEODE
118         tristate "AMD Geode HW Random Number Generator support"
119         depends on X86_32 && PCI
120         default HW_RANDOM
121         ---help---
122           This driver provides kernel-side support for the Random Number
123           Generator hardware found on the AMD Geode LX.
124 
125           To compile this driver as a module, choose M here: the
126           module will be called geode-rng.
127 
128           If unsure, say Y.
129 
130 config HW_RANDOM_N2RNG
131         tristate "Niagara2 Random Number Generator support"
132         depends on SPARC64
133         default HW_RANDOM
134         ---help---
135           This driver provides kernel-side support for the Random Number
136           Generator hardware found on Niagara2 cpus.
137 
138           To compile this driver as a module, choose M here: the
139           module will be called n2-rng.
140 
141           If unsure, say Y.
142 
143 config HW_RANDOM_VIA
144         tristate "VIA HW Random Number Generator support"
145         depends on X86
146         default HW_RANDOM
147         ---help---
148           This driver provides kernel-side support for the Random Number
149           Generator hardware found on VIA based motherboards.
150 
151           To compile this driver as a module, choose M here: the
152           module will be called via-rng.
153 
154           If unsure, say Y.
155 
156 config HW_RANDOM_IXP4XX
157         tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support"
158         depends on ARCH_IXP4XX
159         default HW_RANDOM
160         ---help---
161           This driver provides kernel-side support for the Pseudo-Random
162           Number Generator hardware found on the Intel IXP45x/46x NPU.
163 
164           To compile this driver as a module, choose M here: the
165           module will be called ixp4xx-rng.
166 
167           If unsure, say Y.
168 
169 config HW_RANDOM_OMAP
170         tristate "OMAP Random Number Generator support"
171         depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS
172         default HW_RANDOM
173         ---help---
174           This driver provides kernel-side support for the Random Number
175           Generator hardware found on OMAP16xx, OMAP2/3/4/5 and AM33xx/AM43xx
176           multimedia processors.
177 
178           To compile this driver as a module, choose M here: the
179           module will be called omap-rng.
180 
181           If unsure, say Y.
182 
183 config HW_RANDOM_OMAP3_ROM
184         tristate "OMAP3 ROM Random Number Generator support"
185         depends on ARCH_OMAP3
186         default HW_RANDOM
187         ---help---
188           This driver provides kernel-side support for the Random Number
189           Generator hardware found on OMAP34xx processors.
190 
191           To compile this driver as a module, choose M here: the
192           module will be called omap3-rom-rng.
193 
194           If unsure, say Y.
195 
196 config HW_RANDOM_OCTEON
197         tristate "Octeon Random Number Generator support"
198         depends on CAVIUM_OCTEON_SOC
199         default HW_RANDOM
200         ---help---
201           This driver provides kernel-side support for the Random Number
202           Generator hardware found on Octeon processors.
203 
204           To compile this driver as a module, choose M here: the
205           module will be called octeon-rng.
206 
207           If unsure, say Y.
208 
209 config HW_RANDOM_PASEMI
210         tristate "PA Semi HW Random Number Generator support"
211         depends on PPC_PASEMI
212         default HW_RANDOM
213         ---help---
214           This driver provides kernel-side support for the Random Number
215           Generator hardware found on PA Semi PWRficient SoCs.
216 
217           To compile this driver as a module, choose M here: the
218           module will be called pasemi-rng.
219 
220           If unsure, say Y.
221 
222 config HW_RANDOM_VIRTIO
223         tristate "VirtIO Random Number Generator support"
224         depends on VIRTIO
225         ---help---
226           This driver provides kernel-side support for the virtual Random Number
227           Generator hardware.
228 
229           To compile this driver as a module, choose M here: the
230           module will be called virtio-rng.  If unsure, say N.
231 
232 config HW_RANDOM_TX4939
233         tristate "TX4939 Random Number Generator support"
234         depends on SOC_TX4939
235         default HW_RANDOM
236         ---help---
237           This driver provides kernel-side support for the Random Number
238           Generator hardware found on TX4939 SoC.
239 
240           To compile this driver as a module, choose M here: the
241           module will be called tx4939-rng.
242 
243           If unsure, say Y.
244 
245 config HW_RANDOM_MXC_RNGA
246         tristate "Freescale i.MX RNGA Random Number Generator"
247         depends on ARCH_HAS_RNGA
248         default HW_RANDOM
249         ---help---
250           This driver provides kernel-side support for the Random Number
251           Generator hardware found on Freescale i.MX processors.
252 
253           To compile this driver as a module, choose M here: the
254           module will be called mxc-rnga.
255 
256           If unsure, say Y.
257 
258 config HW_RANDOM_NOMADIK
259         tristate "ST-Ericsson Nomadik Random Number Generator support"
260         depends on ARCH_NOMADIK
261         default HW_RANDOM
262         ---help---
263           This driver provides kernel-side support for the Random Number
264           Generator hardware found on ST-Ericsson SoCs (8815 and 8500).
265 
266           To compile this driver as a module, choose M here: the
267           module will be called nomadik-rng.
268 
269           If unsure, say Y.
270 
271 config HW_RANDOM_PPC4XX
272         tristate "PowerPC 4xx generic true random number generator support"
273         depends on PPC && 4xx
274         default HW_RANDOM
275         ---help---
276          This driver provides the kernel-side support for the TRNG hardware
277          found in the security function of some PowerPC 4xx SoCs.
278 
279          To compile this driver as a module, choose M here: the
280          module will be called ppc4xx-rng.
281 
282          If unsure, say N.
283 
284 config HW_RANDOM_PSERIES
285         tristate "pSeries HW Random Number Generator support"
286         depends on PPC64 && IBMVIO
287         default HW_RANDOM
288         ---help---
289           This driver provides kernel-side support for the Random Number
290           Generator hardware found on POWER7+ machines and above
291 
292           To compile this driver as a module, choose M here: the
293           module will be called pseries-rng.
294 
295           If unsure, say Y.
296 
297 config HW_RANDOM_POWERNV
298         tristate "PowerNV Random Number Generator support"
299         depends on PPC_POWERNV
300         default HW_RANDOM
301         ---help---
302           This is the driver for Random Number Generator hardware found
303           in POWER7+ and above machines for PowerNV platform.
304 
305           To compile this driver as a module, choose M here: the
306           module will be called powernv-rng.
307 
308           If unsure, say Y.
309 
310 config HW_RANDOM_EXYNOS
311         tristate "EXYNOS HW random number generator support"
312         depends on ARCH_EXYNOS
313         default HW_RANDOM
314         ---help---
315           This driver provides kernel-side support for the Random Number
316           Generator hardware found on EXYNOS SOCs.
317 
318           To compile this driver as a module, choose M here: the
319           module will be called exynos-rng.
320 
321           If unsure, say Y.
322 
323 config HW_RANDOM_TPM
324         tristate "TPM HW Random Number Generator support"
325         depends on TCG_TPM
326         default HW_RANDOM
327         ---help---
328           This driver provides kernel-side support for the Random Number
329           Generator in the Trusted Platform Module
330 
331           To compile this driver as a module, choose M here: the
332           module will be called tpm-rng.
333 
334           If unsure, say Y.
335 
336 config HW_RANDOM_MSM
337         tristate "Qualcomm SoCs Random Number Generator support"
338         depends on HW_RANDOM && ARCH_QCOM
339         default HW_RANDOM
340         ---help---
341           This driver provides kernel-side support for the Random Number
342           Generator hardware found on Qualcomm SoCs.
343 
344           To compile this driver as a module, choose M here. the
345           module will be called msm-rng.
346 
347           If unsure, say Y.
348 
349 config HW_RANDOM_XGENE
350         tristate "APM X-Gene True Random Number Generator (TRNG) support"
351         depends on HW_RANDOM && ARCH_XGENE
352         default HW_RANDOM
353         ---help---
354           This driver provides kernel-side support for the Random Number
355           Generator hardware found on APM X-Gene SoC.
356 
357           To compile this driver as a module, choose M here: the
358           module will be called xgene_rng.
359 
360           If unsure, say Y.
361 
362 endif # HW_RANDOM
363 
364 config UML_RANDOM
365         depends on UML
366         tristate "Hardware random number generator"
367         help
368           This option enables UML's "hardware" random number generator.  It
369           attaches itself to the host's /dev/random, supplying as much entropy
370           as the host has, rather than the small amount the UML gets from its
371           own drivers.  It registers itself as a standard hardware random number
372           generator, major 10, minor 183, and the canonical device name is
373           /dev/hwrng.
374           The way to make use of this is to install the rng-tools package
375           (check your distro, or download from
376           http://sourceforge.net/projects/gkernel/).  rngd periodically reads
377           /dev/hwrng and injects the entropy into /dev/random.

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