xref: /linux/drivers/char/hw_random/Kconfig (revision 7f71507851fc7764b36a3221839607d3a45c2025) 
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 || COMPILE_TEST) && 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 || COMPILE_TEST)
54	depends on PCI && HAS_IOPORT_MAP
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
65config HW_RANDOM_AIROHA
66	tristate "Airoha True HW Random Number Generator support"
67	depends on ARCH_AIROHA || COMPILE_TEST
68	default HW_RANDOM
69	help
70	  This driver provides kernel-side support for the True Random Number
71	  Generator hardware found on Airoha SoC.
72
73	  To compile this driver as a module, choose M here: the
74	  module will be called airoha-rng.
75
76	  If unsure, say Y.
77
78config HW_RANDOM_ATMEL
79	tristate "Atmel Random Number Generator support"
80	depends on (ARCH_AT91 || COMPILE_TEST)
81	default HW_RANDOM
82	help
83	  This driver provides kernel-side support for the Random Number
84	  Generator hardware found on Atmel AT91 devices.
85
86	  To compile this driver as a module, choose M here: the
87	  module will be called atmel-rng.
88
89	  If unsure, say Y.
90
91config HW_RANDOM_BA431
92	tristate "Silex Insight BA431 Random Number Generator support"
93	depends on HAS_IOMEM
94	help
95	  This driver provides kernel-side support for the Random Number
96	  Generator hardware based on Silex Insight BA431 IP.
97
98	  To compile this driver as a module, choose M here: the
99	  module will be called ba431-rng.
100
101config HW_RANDOM_BCM2835
102	tristate "Broadcom BCM2835/BCM63xx Random Number Generator support"
103	depends on ARCH_BCM2835 || ARCH_BCM_NSP || ARCH_BCM_5301X || \
104		   ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC || COMPILE_TEST
105	default HW_RANDOM
106	help
107	  This driver provides kernel-side support for the Random Number
108	  Generator hardware found on the Broadcom BCM2835 and BCM63xx SoCs.
109
110	  To compile this driver as a module, choose M here: the
111	  module will be called bcm2835-rng
112
113	  If unsure, say Y.
114
115config HW_RANDOM_BCM74110
116	tristate "Broadcom BCM74110 Random Number Generator support"
117	depends on ARCH_BRCMSTB || COMPILE_TEST
118	default HW_RANDOM
119	help
120	  This driver provides kernel-side support for the Random Number
121	  Generator hardware found on the Broadcom BCM74110 SoCs.
122
123	  To compile this driver as a module, choose M here: the
124	  module will be called bcm74110-rng
125
126	  If unsure, say Y.
127
128config HW_RANDOM_IPROC_RNG200
129	tristate "Broadcom iProc/STB RNG200 support"
130	depends on ARCH_BCM_IPROC || ARCH_BCM2835 || ARCH_BCMBCA || ARCH_BRCMSTB || COMPILE_TEST
131	default HW_RANDOM
132	help
133	  This driver provides kernel-side support for the RNG200
134	  hardware found on the Broadcom iProc and STB SoCs.
135
136	  To compile this driver as a module, choose M here: the
137	  module will be called iproc-rng200
138
139	  If unsure, say Y.
140
141config HW_RANDOM_GEODE
142	tristate "AMD Geode HW Random Number Generator support"
143	depends on (X86_32 || COMPILE_TEST)
144	depends on PCI
145	default HW_RANDOM
146	help
147	  This driver provides kernel-side support for the Random Number
148	  Generator hardware found on the AMD Geode LX.
149
150	  To compile this driver as a module, choose M here: the
151	  module will be called geode-rng.
152
153	  If unsure, say Y.
154
155config HW_RANDOM_N2RNG
156	tristate "Niagara2 Random Number Generator support"
157	depends on SPARC64
158	default HW_RANDOM
159	help
160	  This driver provides kernel-side support for the Random Number
161	  Generator hardware found on Niagara2 cpus.
162
163	  To compile this driver as a module, choose M here: the
164	  module will be called n2-rng.
165
166	  If unsure, say Y.
167
168config HW_RANDOM_VIA
169	tristate "VIA HW Random Number Generator support"
170	depends on X86
171	default HW_RANDOM
172	help
173	  This driver provides kernel-side support for the Random Number
174	  Generator hardware found on VIA based motherboards.
175
176	  To compile this driver as a module, choose M here: the
177	  module will be called via-rng.
178
179	  If unsure, say Y.
180
181config HW_RANDOM_IXP4XX
182	tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support"
183	depends on ARCH_IXP4XX || COMPILE_TEST
184	default HW_RANDOM
185	help
186	  This driver provides kernel-side support for the Pseudo-Random
187	  Number Generator hardware found on the Intel IXP45x/46x NPU.
188
189	  To compile this driver as a module, choose M here: the
190	  module will be called ixp4xx-rng.
191
192	  If unsure, say Y.
193
194config HW_RANDOM_OMAP
195	tristate "OMAP Random Number Generator support"
196	depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || ARCH_MVEBU || ARCH_K3 || COMPILE_TEST
197	default HW_RANDOM
198	help
199	  This driver provides kernel-side support for the Random Number
200	  Generator hardware found on OMAP16xx, OMAP2/3/4/5, AM33xx/AM43xx
201	  multimedia processors, and Marvell Armada 7k/8k SoCs.
202
203	  To compile this driver as a module, choose M here: the
204	  module will be called omap-rng.
205
206	  If unsure, say Y.
207
208config HW_RANDOM_OMAP3_ROM
209	tristate "OMAP3 ROM Random Number Generator support"
210	depends on ARCH_OMAP3 || COMPILE_TEST
211	default HW_RANDOM
212	help
213	  This driver provides kernel-side support for the Random Number
214	  Generator hardware found on OMAP34xx processors.
215
216	  To compile this driver as a module, choose M here: the
217	  module will be called omap3-rom-rng.
218
219	  If unsure, say Y.
220
221config HW_RANDOM_OCTEON
222	tristate "Octeon Random Number Generator support"
223	depends on CAVIUM_OCTEON_SOC
224	default HW_RANDOM
225	help
226	  This driver provides kernel-side support for the Random Number
227	  Generator hardware found on Octeon processors.
228
229	  To compile this driver as a module, choose M here: the
230	  module will be called octeon-rng.
231
232	  If unsure, say Y.
233
234config HW_RANDOM_PASEMI
235	tristate "PA Semi HW Random Number Generator support"
236	depends on PPC_PASEMI || (PPC && COMPILE_TEST)
237	default HW_RANDOM
238	help
239	  This driver provides kernel-side support for the Random Number
240	  Generator hardware found on PA Semi PWRficient SoCs.
241
242	  To compile this driver as a module, choose M here: the
243	  module will be called pasemi-rng.
244
245	  If unsure, say Y.
246
247config HW_RANDOM_VIRTIO
248	tristate "VirtIO Random Number Generator support"
249	depends on VIRTIO
250	help
251	  This driver provides kernel-side support for the virtual Random Number
252	  Generator hardware.
253
254	  To compile this driver as a module, choose M here: the
255	  module will be called virtio-rng.  If unsure, say N.
256
257config HW_RANDOM_MXC_RNGA
258	tristate "Freescale i.MX RNGA Random Number Generator"
259	depends on SOC_IMX31 || COMPILE_TEST
260	default HW_RANDOM
261	help
262	  This driver provides kernel-side support for the Random Number
263	  Generator hardware found on Freescale i.MX processors.
264
265	  To compile this driver as a module, choose M here: the
266	  module will be called mxc-rnga.
267
268	  If unsure, say Y.
269
270config HW_RANDOM_IMX_RNGC
271	tristate "Freescale i.MX RNGC Random Number Generator"
272	depends on HAS_IOMEM
273	depends on SOC_IMX25 || SOC_IMX6SL || SOC_IMX6SLL || SOC_IMX6UL || COMPILE_TEST
274	default HW_RANDOM
275	help
276	  This driver provides kernel-side support for the Random Number
277	  Generator Version C hardware found on some Freescale i.MX
278	  processors. Version B is also supported by this driver.
279
280	  To compile this driver as a module, choose M here: the
281	  module will be called imx-rngc.
282
283	  If unsure, say Y.
284
285config HW_RANDOM_INGENIC_RNG
286	tristate "Ingenic Random Number Generator support"
287	depends on MACH_JZ4780 || MACH_X1000 || COMPILE_TEST
288	default HW_RANDOM
289	help
290	  This driver provides kernel-side support for the Random Number Generator
291	  hardware found in ingenic JZ4780 and X1000 SoC. MIPS Creator CI20 uses
292	  JZ4780 SoC, YSH & ATIL CU1000-Neo uses X1000 SoC.
293
294	  To compile this driver as a module, choose M here: the
295	  module will be called ingenic-rng.
296
297	  If unsure, say Y.
298
299config HW_RANDOM_INGENIC_TRNG
300	tristate "Ingenic True Random Number Generator support"
301	depends on MACH_X1830 || COMPILE_TEST
302	default HW_RANDOM
303	help
304	  This driver provides kernel-side support for the True Random Number Generator
305	  hardware found in ingenic X1830 SoC. YSH & ATIL CU1830-Neo uses X1830 SoC.
306
307	  To compile this driver as a module, choose M here: the
308	  module will be called ingenic-trng.
309
310	  If unsure, say Y.
311
312config HW_RANDOM_NOMADIK
313	tristate "ST-Ericsson Nomadik Random Number Generator support"
314	depends on ARCH_NOMADIK || COMPILE_TEST
315	default HW_RANDOM
316	help
317	  This driver provides kernel-side support for the Random Number
318	  Generator hardware found on ST-Ericsson SoCs (8815 and 8500).
319
320	  To compile this driver as a module, choose M here: the
321	  module will be called nomadik-rng.
322
323	  If unsure, say Y.
324
325config HW_RANDOM_PSERIES
326	tristate "pSeries HW Random Number Generator support"
327	depends on PPC64 && IBMVIO
328	default HW_RANDOM
329	help
330	  This driver provides kernel-side support for the Random Number
331	  Generator hardware found on POWER7+ machines and above
332
333	  To compile this driver as a module, choose M here: the
334	  module will be called pseries-rng.
335
336	  If unsure, say Y.
337
338config HW_RANDOM_POWERNV
339	tristate "PowerNV Random Number Generator support"
340	depends on PPC_POWERNV
341	default HW_RANDOM
342	help
343	  This is the driver for Random Number Generator hardware found
344	  in POWER7+ and above machines for PowerNV platform.
345
346	  To compile this driver as a module, choose M here: the
347	  module will be called powernv-rng.
348
349	  If unsure, say Y.
350
351config HW_RANDOM_HISI
352	tristate "Hisilicon Random Number Generator support"
353	depends on ARCH_HISI || COMPILE_TEST
354	default HW_RANDOM
355	help
356	  This driver provides kernel-side support for the Random Number
357	  Generator hardware found on Hisilicon Hip04 and Hip05 SoC.
358
359	  To compile this driver as a module, choose M here: the
360	  module will be called hisi-rng.
361
362	  If unsure, say Y.
363
364config HW_RANDOM_HISTB
365	tristate "Hisilicon STB Random Number Generator support"
366	depends on ARCH_HISI || COMPILE_TEST
367	default ARCH_HISI
368	help
369	  This driver provides kernel-side support for the Random Number
370	  Generator hardware found on Hisilicon Hi37xx SoC.
371
372	  To compile this driver as a module, choose M here: the
373	  module will be called histb-rng.
374
375config HW_RANDOM_ST
376	tristate "ST Microelectronics HW Random Number Generator support"
377	depends on ARCH_STI || COMPILE_TEST
378	help
379	  This driver provides kernel-side support for the Random Number
380	  Generator hardware found on STi series of SoCs.
381
382	  To compile this driver as a module, choose M here: the
383	  module will be called st-rng.
384
385config HW_RANDOM_XGENE
386	tristate "APM X-Gene True Random Number Generator (TRNG) support"
387	depends on ARCH_XGENE || COMPILE_TEST
388	default HW_RANDOM
389	help
390	  This driver provides kernel-side support for the Random Number
391	  Generator hardware found on APM X-Gene SoC.
392
393	  To compile this driver as a module, choose M here: the
394	  module will be called xgene_rng.
395
396	  If unsure, say Y.
397
398config HW_RANDOM_STM32
399	tristate "STMicroelectronics STM32 random number generator"
400	depends on ARCH_STM32 || COMPILE_TEST
401	depends on HAS_IOMEM
402	default HW_RANDOM
403	help
404	  This driver provides kernel-side support for the Random Number
405	  Generator hardware found on STM32 microcontrollers.
406
407	  To compile this driver as a module, choose M here: the
408	  module will be called stm32-rng.
409
410	  If unsure, say N.
411
412config HW_RANDOM_PIC32
413	tristate "Microchip PIC32 Random Number Generator support"
414	depends on MACH_PIC32 || COMPILE_TEST
415	default HW_RANDOM if MACH_PIC32
416	help
417	  This driver provides kernel-side support for the Random Number
418	  Generator hardware found on a PIC32.
419
420	  To compile this driver as a module, choose M here. the
421	  module will be called pic32-rng.
422
423	  If unsure, say Y.
424
425config HW_RANDOM_POLARFIRE_SOC
426	tristate "Microchip PolarFire SoC Random Number Generator support"
427	depends on HW_RANDOM && POLARFIRE_SOC_SYS_CTRL
428	help
429	  This driver provides kernel-side support for the Random Number
430	  Generator hardware found on PolarFire SoC (MPFS).
431
432	  To compile this driver as a module, choose M here. The
433	  module will be called mfps_rng.
434
435	  If unsure, say N.
436
437
438config HW_RANDOM_MESON
439	tristate "Amlogic Meson Random Number Generator support"
440	depends on ARCH_MESON || COMPILE_TEST
441	depends on HAS_IOMEM && OF
442	default HW_RANDOM if ARCH_MESON
443	help
444	  This driver provides kernel-side support for the Random Number
445	  Generator hardware found on Amlogic Meson SoCs.
446
447	  To compile this driver as a module, choose M here. the
448	  module will be called meson-rng.
449
450	  If unsure, say Y.
451
452config HW_RANDOM_CAVIUM
453	tristate "Cavium ThunderX Random Number Generator support"
454	depends on PCI
455	depends on ARCH_THUNDER || (ARM64 && COMPILE_TEST)
456	default HW_RANDOM
457	help
458	  This driver provides kernel-side support for the Random Number
459	  Generator hardware found on Cavium SoCs.
460
461	  To compile this driver as a module, choose M here: the
462	  module will be called cavium_rng.
463
464	  If unsure, say Y.
465
466config HW_RANDOM_MTK
467	tristate "Mediatek Random Number Generator support"
468	depends on ARCH_MEDIATEK || COMPILE_TEST
469	depends on HAS_IOMEM && OF
470	default HW_RANDOM if ARCH_MEDIATEK
471	help
472	  This driver provides kernel-side support for the Random Number
473	  Generator hardware found on Mediatek SoCs.
474
475	  To compile this driver as a module, choose M here. the
476	  module will be called mtk-rng.
477
478	  If unsure, say Y.
479
480config HW_RANDOM_S390
481	tristate "S390 True Random Number Generator support"
482	depends on S390
483	default HW_RANDOM
484	help
485	  This driver provides kernel-side support for the True
486	  Random Number Generator available as CPACF extension
487	  on modern s390 hardware platforms.
488
489	  To compile this driver as a module, choose M here: the
490	  module will be called s390-trng.
491
492	  If unsure, say Y.
493
494config HW_RANDOM_EXYNOS
495	tristate "Samsung Exynos True Random Number Generator support"
496	depends on ARCH_EXYNOS || COMPILE_TEST
497	depends on HAS_IOMEM
498	default HW_RANDOM if ARCH_EXYNOS
499	help
500	  This driver provides support for the True Random Number
501	  Generator available in Exynos SoCs.
502
503	  To compile this driver as a module, choose M here: the module
504	  will be called exynos-trng.
505
506	  If unsure, say Y.
507
508config HW_RANDOM_OPTEE
509	tristate "OP-TEE based Random Number Generator support"
510	depends on OPTEE
511	default HW_RANDOM
512	help
513	  This  driver provides support for OP-TEE based Random Number
514	  Generator on ARM SoCs where hardware entropy sources are not
515	  accessible to normal world (Linux).
516
517	  To compile this driver as a module, choose M here: the module
518	  will be called optee-rng.
519
520	  If unsure, say Y.
521
522config HW_RANDOM_NPCM
523	tristate "NPCM Random Number Generator support"
524	depends on ARCH_NPCM || COMPILE_TEST
525	depends on HAS_IOMEM
526	default HW_RANDOM if ARCH_NPCM
527	help
528	  This driver provides support for the Random Number
529	  Generator hardware available in Nuvoton NPCM SoCs.
530
531	  To compile this driver as a module, choose M here: the
532	  module will be called npcm-rng.
533
534	  If unsure, say Y.
535
536config HW_RANDOM_KEYSTONE
537	depends on ARCH_KEYSTONE || COMPILE_TEST
538	depends on HAS_IOMEM && OF
539	default HW_RANDOM
540	tristate "TI Keystone NETCP SA Hardware random number generator"
541	help
542	  This option enables Keystone's hardware random generator.
543
544config HW_RANDOM_CCTRNG
545	tristate "Arm CryptoCell True Random Number Generator support"
546	depends on HAS_IOMEM && OF
547	help
548	  Say 'Y' to enable the True Random Number Generator driver for the
549	  Arm TrustZone CryptoCell family of processors.
550	  Currently the CryptoCell 713 and 703 are supported.
551	  The driver is supported only in SoC where Trusted Execution
552	  Environment is not used.
553	  Choose 'M' to compile this driver as a module. The module
554	  will be called cctrng.
555	  If unsure, say 'N'.
556
557config HW_RANDOM_XIPHERA
558	tristate "Xiphera FPGA based True Random Number Generator support"
559	depends on HAS_IOMEM
560	help
561	  This driver provides kernel-side support for Xiphera True Random
562	  Number Generator Intellectual Property Core.
563
564	  To compile this driver as a module, choose M here: the
565	  module will be called xiphera-trng.
566
567config HW_RANDOM_ARM_SMCCC_TRNG
568	tristate "Arm SMCCC TRNG firmware interface support"
569	depends on HAVE_ARM_SMCCC_DISCOVERY
570	default HW_RANDOM
571	help
572	  Say 'Y' to enable the True Random Number Generator driver using
573	  the Arm SMCCC TRNG firmware interface. This reads entropy from
574	  higher exception levels (firmware, hypervisor). Uses SMCCC for
575	  communicating with the firmware:
576	  https://developer.arm.com/documentation/den0098/latest/
577
578	  To compile this driver as a module, choose M here: the
579	  module will be called arm_smccc_trng.
580
581config HW_RANDOM_CN10K
582       tristate "Marvell CN10K Random Number Generator support"
583       depends on HW_RANDOM && PCI && (ARM64 || (64BIT && COMPILE_TEST))
584       default HW_RANDOM if ARCH_THUNDER
585       help
586	 This driver provides support for the True Random Number
587	 generator available in Marvell CN10K SoCs.
588
589	 To compile this driver as a module, choose M here.
590	 The module will be called cn10k_rng. If unsure, say Y.
591
592config HW_RANDOM_JH7110
593	tristate "StarFive JH7110 Random Number Generator support"
594	depends on SOC_STARFIVE || COMPILE_TEST
595	help
596	  This driver provides support for the True Random Number
597	  Generator in StarFive JH7110 SoCs.
598
599	  To compile this driver as a module, choose M here.
600	  The module will be called jh7110-trng.
601
602config HW_RANDOM_ROCKCHIP
603	tristate "Rockchip True Random Number Generator"
604	depends on HW_RANDOM && (ARCH_ROCKCHIP || COMPILE_TEST)
605	depends on HAS_IOMEM
606	default HW_RANDOM
607	help
608	  This driver provides kernel-side support for the True Random Number
609	  Generator hardware found on some Rockchip SoC like RK3566 or RK3568.
610
611	  To compile this driver as a module, choose M here: the
612	  module will be called rockchip-rng.
613
614	  If unsure, say Y.
615
616endif # HW_RANDOM
617
618config UML_RANDOM
619	depends on UML
620	select HW_RANDOM
621	tristate "UML Random Number Generator support"
622	help
623	  This option enables UML's "hardware" random number generator.  It
624	  attaches itself to the host's /dev/random, supplying as much entropy
625	  as the host has, rather than the small amount the UML gets from its
626	  own drivers. It registers itself as a rng-core driver thus providing
627	  a device which is usually called /dev/hwrng. This hardware random
628	  number generator does feed into the kernel's random number generator
629	  entropy pool.
630
631	  If unsure, say Y.
632