tjh.dev
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1# SPDX-License-Identifier: GPL-2.0-only
2#
3# Hardware Random Number Generator (RNG) configuration
4#
5
6menuconfig HW_RANDOM
7 tristate "Hardware Random Number Generator Core support"
8 default m
9 help
10 Hardware Random Number Generator Core infrastructure.
11
12 To compile this driver as a module, choose M here: the
13 module will be called rng-core. This provides a device
14 that's usually called /dev/hwrng, and which exposes one
15 of possibly several hardware random number generators.
16
17 These hardware random number generators do feed into the
18 kernel's random number generator entropy pool.
19
20 If unsure, say Y.
21
22if HW_RANDOM
23
24config HW_RANDOM_TIMERIOMEM
25 tristate "Timer IOMEM HW Random Number Generator support"
26 depends on HAS_IOMEM
27 help
28 This driver provides kernel-side support for a generic Random
29 Number Generator used by reading a 'dumb' iomem address that
30 is to be read no faster than, for example, once a second;
31 the default FPGA bitstream on the TS-7800 has such functionality.
32
33 To compile this driver as a module, choose M here: the
34 module will be called timeriomem-rng.
35
36 If unsure, say Y.
37
38config HW_RANDOM_INTEL
39 tristate "Intel HW Random Number Generator support"
40 depends on (X86 || IA64) && PCI
41 default HW_RANDOM
42 help
43 This driver provides kernel-side support for the Random Number
44 Generator hardware found on Intel i8xx-based motherboards.
45
46 To compile this driver as a module, choose M here: the
47 module will be called intel-rng.
48
49 If unsure, say Y.
50
51config HW_RANDOM_AMD
52 tristate "AMD HW Random Number Generator support"
53 depends on (X86 || PPC_MAPLE) && PCI
54 default HW_RANDOM
55 help
56 This driver provides kernel-side support for the Random Number
57 Generator hardware found on AMD 76x-based motherboards.
58
59 To compile this driver as a module, choose M here: the
60 module will be called amd-rng.
61
62 If unsure, say Y.
63
64config HW_RANDOM_ATMEL
65 tristate "Atmel Random Number Generator support"
66 depends on (ARCH_AT91 || COMPILE_TEST) && HAVE_CLK && OF
67 default HW_RANDOM
68 help
69 This driver provides kernel-side support for the Random Number
70 Generator hardware found on Atmel AT91 devices.
71
72 To compile this driver as a module, choose M here: the
73 module will be called atmel-rng.
74
75 If unsure, say Y.
76
77config HW_RANDOM_BA431
78 tristate "Silex Insight BA431 Random Number Generator support"
79 depends on HAS_IOMEM
80 help
81 This driver provides kernel-side support for the Random Number
82 Generator hardware based on Silex Insight BA431 IP.
83
84 To compile this driver as a module, choose M here: the
85 module will be called ba431-rng.
86
87config HW_RANDOM_BCM2835
88 tristate "Broadcom BCM2835/BCM63xx Random Number Generator support"
89 depends on ARCH_BCM2835 || ARCH_BCM_NSP || ARCH_BCM_5301X || \
90 ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC || COMPILE_TEST
91 default HW_RANDOM
92 help
93 This driver provides kernel-side support for the Random Number
94 Generator hardware found on the Broadcom BCM2835 and BCM63xx SoCs.
95
96 To compile this driver as a module, choose M here: the
97 module will be called bcm2835-rng
98
99 If unsure, say Y.
100
101config HW_RANDOM_IPROC_RNG200
102 tristate "Broadcom iProc/STB RNG200 support"
103 depends on ARCH_BCM_IPROC || ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST
104 default HW_RANDOM
105 help
106 This driver provides kernel-side support for the RNG200
107 hardware found on the Broadcom iProc and STB SoCs.
108
109 To compile this driver as a module, choose M here: the
110 module will be called iproc-rng200
111
112 If unsure, say Y.
113
114config HW_RANDOM_GEODE
115 tristate "AMD Geode HW Random Number Generator support"
116 depends on X86_32 && PCI
117 default HW_RANDOM
118 help
119 This driver provides kernel-side support for the Random Number
120 Generator hardware found on the AMD Geode LX.
121
122 To compile this driver as a module, choose M here: the
123 module will be called geode-rng.
124
125 If unsure, say Y.
126
127config HW_RANDOM_N2RNG
128 tristate "Niagara2 Random Number Generator support"
129 depends on SPARC64
130 default HW_RANDOM
131 help
132 This driver provides kernel-side support for the Random Number
133 Generator hardware found on Niagara2 cpus.
134
135 To compile this driver as a module, choose M here: the
136 module will be called n2-rng.
137
138 If unsure, say Y.
139
140config HW_RANDOM_VIA
141 tristate "VIA HW Random Number Generator support"
142 depends on X86
143 default HW_RANDOM
144 help
145 This driver provides kernel-side support for the Random Number
146 Generator hardware found on VIA based motherboards.
147
148 To compile this driver as a module, choose M here: the
149 module will be called via-rng.
150
151 If unsure, say Y.
152
153config HW_RANDOM_IXP4XX
154 tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support"
155 depends on ARCH_IXP4XX || COMPILE_TEST
156 default HW_RANDOM
157 help
158 This driver provides kernel-side support for the Pseudo-Random
159 Number Generator hardware found on the Intel IXP45x/46x NPU.
160
161 To compile this driver as a module, choose M here: the
162 module will be called ixp4xx-rng.
163
164 If unsure, say Y.
165
166config HW_RANDOM_OMAP
167 tristate "OMAP Random Number Generator support"
168 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || ARCH_MVEBU || ARCH_K3 || COMPILE_TEST
169 default HW_RANDOM
170 help
171 This driver provides kernel-side support for the Random Number
172 Generator hardware found on OMAP16xx, OMAP2/3/4/5, AM33xx/AM43xx
173 multimedia processors, and Marvell Armada 7k/8k SoCs.
174
175 To compile this driver as a module, choose M here: the
176 module will be called omap-rng.
177
178 If unsure, say Y.
179
180config HW_RANDOM_OMAP3_ROM
181 tristate "OMAP3 ROM Random Number Generator support"
182 depends on ARCH_OMAP3 || COMPILE_TEST
183 default HW_RANDOM
184 help
185 This driver provides kernel-side support for the Random Number
186 Generator hardware found on OMAP34xx processors.
187
188 To compile this driver as a module, choose M here: the
189 module will be called omap3-rom-rng.
190
191 If unsure, say Y.
192
193config HW_RANDOM_OCTEON
194 tristate "Octeon Random Number Generator support"
195 depends on CAVIUM_OCTEON_SOC
196 default HW_RANDOM
197 help
198 This driver provides kernel-side support for the Random Number
199 Generator hardware found on Octeon processors.
200
201 To compile this driver as a module, choose M here: the
202 module will be called octeon-rng.
203
204 If unsure, say Y.
205
206config HW_RANDOM_PASEMI
207 tristate "PA Semi HW Random Number Generator support"
208 depends on PPC_PASEMI
209 default HW_RANDOM
210 help
211 This driver provides kernel-side support for the Random Number
212 Generator hardware found on PA Semi PWRficient SoCs.
213
214 To compile this driver as a module, choose M here: the
215 module will be called pasemi-rng.
216
217 If unsure, say Y.
218
219config HW_RANDOM_VIRTIO
220 tristate "VirtIO Random Number Generator support"
221 depends on VIRTIO
222 help
223 This driver provides kernel-side support for the virtual Random Number
224 Generator hardware.
225
226 To compile this driver as a module, choose M here: the
227 module will be called virtio-rng. If unsure, say N.
228
229config HW_RANDOM_MXC_RNGA
230 tristate "Freescale i.MX RNGA Random Number Generator"
231 depends on SOC_IMX31
232 default HW_RANDOM
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
242config HW_RANDOM_IMX_RNGC
243 tristate "Freescale i.MX RNGC Random Number Generator"
244 depends on HAS_IOMEM && HAVE_CLK
245 depends on SOC_IMX25 || SOC_IMX6SL || SOC_IMX6SLL || SOC_IMX6UL || COMPILE_TEST
246 default HW_RANDOM
247 help
248 This driver provides kernel-side support for the Random Number
249 Generator Version C hardware found on some Freescale i.MX
250 processors. Version B is also supported by this driver.
251
252 To compile this driver as a module, choose M here: the
253 module will be called imx-rngc.
254
255 If unsure, say Y.
256
257config HW_RANDOM_INGENIC_RNG
258 tristate "Ingenic Random Number Generator support"
259 depends on HW_RANDOM
260 depends on MACH_JZ4780 || MACH_X1000
261 default HW_RANDOM
262 help
263 This driver provides kernel-side support for the Random Number Generator
264 hardware found in ingenic JZ4780 and X1000 SoC. MIPS Creator CI20 uses
265 JZ4780 SoC, YSH & ATIL CU1000-Neo uses X1000 SoC.
266
267 To compile this driver as a module, choose M here: the
268 module will be called ingenic-rng.
269
270 If unsure, say Y.
271
272config HW_RANDOM_INGENIC_TRNG
273 tristate "Ingenic True Random Number Generator support"
274 depends on HW_RANDOM
275 depends on MACH_X1830
276 default HW_RANDOM
277 help
278 This driver provides kernel-side support for the True Random Number Generator
279 hardware found in ingenic X1830 SoC. YSH & ATIL CU1830-Neo uses X1830 SoC.
280
281 To compile this driver as a module, choose M here: the
282 module will be called ingenic-trng.
283
284 If unsure, say Y.
285
286config HW_RANDOM_NOMADIK
287 tristate "ST-Ericsson Nomadik Random Number Generator support"
288 depends on ARCH_NOMADIK || COMPILE_TEST
289 default HW_RANDOM
290 help
291 This driver provides kernel-side support for the Random Number
292 Generator hardware found on ST-Ericsson SoCs (8815 and 8500).
293
294 To compile this driver as a module, choose M here: the
295 module will be called nomadik-rng.
296
297 If unsure, say Y.
298
299config HW_RANDOM_PSERIES
300 tristate "pSeries HW Random Number Generator support"
301 depends on PPC64 && IBMVIO
302 default HW_RANDOM
303 help
304 This driver provides kernel-side support for the Random Number
305 Generator hardware found on POWER7+ machines and above
306
307 To compile this driver as a module, choose M here: the
308 module will be called pseries-rng.
309
310 If unsure, say Y.
311
312config HW_RANDOM_POWERNV
313 tristate "PowerNV Random Number Generator support"
314 depends on PPC_POWERNV
315 default HW_RANDOM
316 help
317 This is the driver for Random Number Generator hardware found
318 in POWER7+ and above machines for PowerNV platform.
319
320 To compile this driver as a module, choose M here: the
321 module will be called powernv-rng.
322
323 If unsure, say Y.
324
325config HW_RANDOM_HISI
326 tristate "Hisilicon Random Number Generator support"
327 depends on HW_RANDOM && ARCH_HISI
328 default HW_RANDOM
329 help
330 This driver provides kernel-side support for the Random Number
331 Generator hardware found on Hisilicon Hip04 and Hip05 SoC.
332
333 To compile this driver as a module, choose M here: the
334 module will be called hisi-rng.
335
336 If unsure, say Y.
337
338config HW_RANDOM_ST
339 tristate "ST Microelectronics HW Random Number Generator support"
340 depends on HW_RANDOM && ARCH_STI
341 help
342 This driver provides kernel-side support for the Random Number
343 Generator hardware found on STi series of SoCs.
344
345 To compile this driver as a module, choose M here: the
346 module will be called st-rng.
347
348config HW_RANDOM_XGENE
349 tristate "APM X-Gene True Random Number Generator (TRNG) support"
350 depends on HW_RANDOM && ARCH_XGENE
351 default HW_RANDOM
352 help
353 This driver provides kernel-side support for the Random Number
354 Generator hardware found on APM X-Gene SoC.
355
356 To compile this driver as a module, choose M here: the
357 module will be called xgene_rng.
358
359 If unsure, say Y.
360
361config HW_RANDOM_STM32
362 tristate "STMicroelectronics STM32 random number generator"
363 depends on HW_RANDOM && (ARCH_STM32 || COMPILE_TEST)
364 depends on HAS_IOMEM
365 default HW_RANDOM
366 help
367 This driver provides kernel-side support for the Random Number
368 Generator hardware found on STM32 microcontrollers.
369
370 To compile this driver as a module, choose M here: the
371 module will be called stm32-rng.
372
373 If unsure, say N.
374
375config HW_RANDOM_PIC32
376 tristate "Microchip PIC32 Random Number Generator support"
377 depends on HW_RANDOM && MACH_PIC32
378 default y
379 help
380 This driver provides kernel-side support for the Random Number
381 Generator hardware found on a PIC32.
382
383 To compile this driver as a module, choose M here. the
384 module will be called pic32-rng.
385
386 If unsure, say Y.
387
388config HW_RANDOM_POLARFIRE_SOC
389 tristate "Microchip PolarFire SoC Random Number Generator support"
390 depends on HW_RANDOM && POLARFIRE_SOC_SYS_CTRL
391 help
392 This driver provides kernel-side support for the Random Number
393 Generator hardware found on PolarFire SoC (MPFS).
394
395 To compile this driver as a module, choose M here. The
396 module will be called mfps_rng.
397
398 If unsure, say N.
399
400
401config HW_RANDOM_MESON
402 tristate "Amlogic Meson Random Number Generator support"
403 depends on HW_RANDOM
404 depends on ARCH_MESON || COMPILE_TEST
405 default y
406 help
407 This driver provides kernel-side support for the Random Number
408 Generator hardware found on Amlogic Meson SoCs.
409
410 To compile this driver as a module, choose M here. the
411 module will be called meson-rng.
412
413 If unsure, say Y.
414
415config HW_RANDOM_CAVIUM
416 tristate "Cavium ThunderX Random Number Generator support"
417 depends on HW_RANDOM && PCI && ARCH_THUNDER
418 default HW_RANDOM
419 help
420 This driver provides kernel-side support for the Random Number
421 Generator hardware found on Cavium SoCs.
422
423 To compile this driver as a module, choose M here: the
424 module will be called cavium_rng.
425
426 If unsure, say Y.
427
428config HW_RANDOM_MTK
429 tristate "Mediatek Random Number Generator support"
430 depends on HW_RANDOM
431 depends on ARCH_MEDIATEK || COMPILE_TEST
432 default y
433 help
434 This driver provides kernel-side support for the Random Number
435 Generator hardware found on Mediatek SoCs.
436
437 To compile this driver as a module, choose M here. the
438 module will be called mtk-rng.
439
440 If unsure, say Y.
441
442config HW_RANDOM_S390
443 tristate "S390 True Random Number Generator support"
444 depends on S390
445 default HW_RANDOM
446 help
447 This driver provides kernel-side support for the True
448 Random Number Generator available as CPACF extension
449 on modern s390 hardware platforms.
450
451 To compile this driver as a module, choose M here: the
452 module will be called s390-trng.
453
454 If unsure, say Y.
455
456config HW_RANDOM_EXYNOS
457 tristate "Samsung Exynos True Random Number Generator support"
458 depends on ARCH_EXYNOS || COMPILE_TEST
459 default HW_RANDOM
460 help
461 This driver provides support for the True Random Number
462 Generator available in Exynos SoCs.
463
464 To compile this driver as a module, choose M here: the module
465 will be called exynos-trng.
466
467 If unsure, say Y.
468
469config HW_RANDOM_OPTEE
470 tristate "OP-TEE based Random Number Generator support"
471 depends on OPTEE
472 default HW_RANDOM
473 help
474 This driver provides support for OP-TEE based Random Number
475 Generator on ARM SoCs where hardware entropy sources are not
476 accessible to normal world (Linux).
477
478 To compile this driver as a module, choose M here: the module
479 will be called optee-rng.
480
481 If unsure, say Y.
482
483config HW_RANDOM_NPCM
484 tristate "NPCM Random Number Generator support"
485 depends on ARCH_NPCM || COMPILE_TEST
486 default HW_RANDOM
487 help
488 This driver provides support for the Random Number
489 Generator hardware available in Nuvoton NPCM SoCs.
490
491 To compile this driver as a module, choose M here: the
492 module will be called npcm-rng.
493
494 If unsure, say Y.
495
496config HW_RANDOM_KEYSTONE
497 depends on ARCH_KEYSTONE || COMPILE_TEST
498 depends on HAS_IOMEM && OF
499 default HW_RANDOM
500 tristate "TI Keystone NETCP SA Hardware random number generator"
501 help
502 This option enables Keystone's hardware random generator.
503
504config HW_RANDOM_CCTRNG
505 tristate "Arm CryptoCell True Random Number Generator support"
506 depends on HAS_IOMEM && OF
507 help
508 Say 'Y' to enable the True Random Number Generator driver for the
509 Arm TrustZone CryptoCell family of processors.
510 Currently the CryptoCell 713 and 703 are supported.
511 The driver is supported only in SoC where Trusted Execution
512 Environment is not used.
513 Choose 'M' to compile this driver as a module. The module
514 will be called cctrng.
515 If unsure, say 'N'.
516
517config HW_RANDOM_XIPHERA
518 tristate "Xiphera FPGA based True Random Number Generator support"
519 depends on HAS_IOMEM
520 help
521 This driver provides kernel-side support for Xiphera True Random
522 Number Generator Intellectual Property Core.
523
524 To compile this driver as a module, choose M here: the
525 module will be called xiphera-trng.
526
527config HW_RANDOM_ARM_SMCCC_TRNG
528 tristate "Arm SMCCC TRNG firmware interface support"
529 depends on HAVE_ARM_SMCCC_DISCOVERY
530 default HW_RANDOM
531 help
532 Say 'Y' to enable the True Random Number Generator driver using
533 the Arm SMCCC TRNG firmware interface. This reads entropy from
534 higher exception levels (firmware, hypervisor). Uses SMCCC for
535 communicating with the firmware:
536 https://developer.arm.com/documentation/den0098/latest/
537
538 To compile this driver as a module, choose M here: the
539 module will be called arm_smccc_trng.
540
541config HW_RANDOM_CN10K
542 tristate "Marvell CN10K Random Number Generator support"
543 depends on HW_RANDOM && PCI && (ARM64 || (64BIT && COMPILE_TEST))
544 default HW_RANDOM
545 help
546 This driver provides support for the True Random Number
547 generator available in Marvell CN10K SoCs.
548
549 To compile this driver as a module, choose M here.
550 The module will be called cn10k_rng. If unsure, say Y.
551
552endif # HW_RANDOM
553
554config UML_RANDOM
555 depends on UML
556 select HW_RANDOM
557 tristate "UML Random Number Generator support"
558 help
559 This option enables UML's "hardware" random number generator. It
560 attaches itself to the host's /dev/random, supplying as much entropy
561 as the host has, rather than the small amount the UML gets from its
562 own drivers. It registers itself as a rng-core driver thus providing
563 a device which is usually called /dev/hwrng. This hardware random
564 number generator does feed into the kernel's random number generator
565 entropy pool.
566
567 If unsure, say Y.