xref: /linux/drivers/char/hw_random/Kconfig (revision 908057d185a41560a55890afa69c9676fc63e55c) 
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_MICROCHIP || 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	depends on ARM_AMBA
316	default HW_RANDOM
317	help
318	  This driver provides kernel-side support for the Random Number
319	  Generator hardware found on ST-Ericsson SoCs (8815 and 8500).
320
321	  To compile this driver as a module, choose M here: the
322	  module will be called nomadik-rng.
323
324	  If unsure, say Y.
325
326config HW_RANDOM_PSERIES
327	tristate "pSeries HW Random Number Generator support"
328	depends on PPC64 && IBMVIO
329	default HW_RANDOM
330	help
331	  This driver provides kernel-side support for the Random Number
332	  Generator hardware found on POWER7+ machines and above
333
334	  To compile this driver as a module, choose M here: the
335	  module will be called pseries-rng.
336
337	  If unsure, say Y.
338
339config HW_RANDOM_POWERNV
340	tristate "PowerNV Random Number Generator support"
341	depends on PPC_POWERNV
342	default HW_RANDOM
343	help
344	  This is the driver for Random Number Generator hardware found
345	  in POWER7+ and above machines for PowerNV platform.
346
347	  To compile this driver as a module, choose M here: the
348	  module will be called powernv-rng.
349
350	  If unsure, say Y.
351
352config HW_RANDOM_HISI
353	tristate "Hisilicon Random Number Generator support"
354	depends on ARCH_HISI || COMPILE_TEST
355	default HW_RANDOM
356	help
357	  This driver provides kernel-side support for the Random Number
358	  Generator hardware found on Hisilicon Hip04 and Hip05 SoC.
359
360	  To compile this driver as a module, choose M here: the
361	  module will be called hisi-rng.
362
363	  If unsure, say Y.
364
365config HW_RANDOM_HISTB
366	tristate "Hisilicon STB Random Number Generator support"
367	depends on ARCH_HISI || COMPILE_TEST
368	default ARCH_HISI
369	help
370	  This driver provides kernel-side support for the Random Number
371	  Generator hardware found on Hisilicon Hi37xx SoC.
372
373	  To compile this driver as a module, choose M here: the
374	  module will be called histb-rng.
375
376config HW_RANDOM_ST
377	tristate "ST Microelectronics HW Random Number Generator support"
378	depends on ARCH_STI || COMPILE_TEST
379	help
380	  This driver provides kernel-side support for the Random Number
381	  Generator hardware found on STi series of SoCs.
382
383	  To compile this driver as a module, choose M here: the
384	  module will be called st-rng.
385
386config HW_RANDOM_XGENE
387	tristate "APM X-Gene True Random Number Generator (TRNG) support"
388	depends on ARCH_XGENE || COMPILE_TEST
389	default HW_RANDOM
390	help
391	  This driver provides kernel-side support for the Random Number
392	  Generator hardware found on APM X-Gene SoC.
393
394	  To compile this driver as a module, choose M here: the
395	  module will be called xgene_rng.
396
397	  If unsure, say Y.
398
399config HW_RANDOM_STM32
400	tristate "STMicroelectronics STM32 random number generator"
401	depends on ARCH_STM32 || COMPILE_TEST
402	depends on HAS_IOMEM
403	default HW_RANDOM
404	help
405	  This driver provides kernel-side support for the Random Number
406	  Generator hardware found on STM32 microcontrollers.
407
408	  To compile this driver as a module, choose M here: the
409	  module will be called stm32-rng.
410
411	  If unsure, say N.
412
413config HW_RANDOM_PIC32
414	tristate "Microchip PIC32 Random Number Generator support"
415	depends on MACH_PIC32 || COMPILE_TEST
416	default HW_RANDOM if MACH_PIC32
417	help
418	  This driver provides kernel-side support for the Random Number
419	  Generator hardware found on a PIC32.
420
421	  To compile this driver as a module, choose M here. the
422	  module will be called pic32-rng.
423
424	  If unsure, say Y.
425
426config HW_RANDOM_POLARFIRE_SOC
427	tristate "Microchip PolarFire SoC Random Number Generator support"
428	depends on HW_RANDOM && POLARFIRE_SOC_SYS_CTRL
429	help
430	  This driver provides kernel-side support for the Random Number
431	  Generator hardware found on PolarFire SoC (MPFS).
432
433	  To compile this driver as a module, choose M here. The
434	  module will be called mfps_rng.
435
436	  If unsure, say N.
437
438
439config HW_RANDOM_MESON
440	tristate "Amlogic Meson Random Number Generator support"
441	depends on ARCH_MESON || COMPILE_TEST
442	depends on HAS_IOMEM && OF
443	default HW_RANDOM if ARCH_MESON
444	help
445	  This driver provides kernel-side support for the Random Number
446	  Generator hardware found on Amlogic Meson SoCs.
447
448	  To compile this driver as a module, choose M here. the
449	  module will be called meson-rng.
450
451	  If unsure, say Y.
452
453config HW_RANDOM_CAVIUM
454	tristate "Cavium ThunderX Random Number Generator support"
455	depends on PCI
456	depends on ARCH_THUNDER || (ARM64 && COMPILE_TEST)
457	default HW_RANDOM
458	help
459	  This driver provides kernel-side support for the Random Number
460	  Generator hardware found on Cavium SoCs.
461
462	  To compile this driver as a module, choose M here: the
463	  module will be called cavium_rng.
464
465	  If unsure, say Y.
466
467config HW_RANDOM_MTK
468	tristate "Mediatek Random Number Generator support"
469	depends on ARCH_MEDIATEK || COMPILE_TEST
470	depends on HAS_IOMEM && OF
471	default HW_RANDOM if ARCH_MEDIATEK
472	help
473	  This driver provides kernel-side support for the Random Number
474	  Generator hardware found on Mediatek SoCs.
475
476	  To compile this driver as a module, choose M here. the
477	  module will be called mtk-rng.
478
479	  If unsure, say Y.
480
481config HW_RANDOM_S390
482	tristate "S390 True Random Number Generator support"
483	depends on S390
484	default HW_RANDOM
485	help
486	  This driver provides kernel-side support for the True
487	  Random Number Generator available as CPACF extension
488	  on modern s390 hardware platforms.
489
490	  To compile this driver as a module, choose M here: the
491	  module will be called s390-trng.
492
493	  If unsure, say Y.
494
495config HW_RANDOM_EXYNOS
496	tristate "Samsung Exynos True Random Number Generator support"
497	depends on ARCH_EXYNOS || COMPILE_TEST
498	depends on HAS_IOMEM
499	default HW_RANDOM if ARCH_EXYNOS
500	help
501	  This driver provides support for the True Random Number
502	  Generator available in Exynos SoCs.
503
504	  To compile this driver as a module, choose M here: the module
505	  will be called exynos-trng.
506
507	  If unsure, say Y.
508
509config HW_RANDOM_OPTEE
510	tristate "OP-TEE based Random Number Generator support"
511	depends on OPTEE
512	default HW_RANDOM
513	help
514	  This  driver provides support for OP-TEE based Random Number
515	  Generator on ARM SoCs where hardware entropy sources are not
516	  accessible to normal world (Linux).
517
518	  To compile this driver as a module, choose M here: the module
519	  will be called optee-rng.
520
521	  If unsure, say Y.
522
523config HW_RANDOM_NPCM
524	tristate "NPCM Random Number Generator support"
525	depends on ARCH_NPCM || COMPILE_TEST
526	depends on HAS_IOMEM
527	default HW_RANDOM if ARCH_NPCM
528	help
529	  This driver provides support for the Random Number
530	  Generator hardware available in Nuvoton NPCM SoCs.
531
532	  To compile this driver as a module, choose M here: the
533	  module will be called npcm-rng.
534
535	  If unsure, say Y.
536
537config HW_RANDOM_KEYSTONE
538	tristate "TI Keystone NETCP SA Hardware random number generator"
539	depends on ARCH_KEYSTONE || COMPILE_TEST
540	depends on HAS_IOMEM && OF
541	default HW_RANDOM
542	help
543	  This option enables Keystone's hardware random generator.
544
545config HW_RANDOM_CCTRNG
546	tristate "Arm CryptoCell True Random Number Generator support"
547	depends on HAS_IOMEM && OF
548	help
549	  Say 'Y' to enable the True Random Number Generator driver for the
550	  Arm TrustZone CryptoCell family of processors.
551	  Currently the CryptoCell 713 and 703 are supported.
552	  The driver is supported only in SoC where Trusted Execution
553	  Environment is not used.
554	  Choose 'M' to compile this driver as a module. The module
555	  will be called cctrng.
556	  If unsure, say 'N'.
557
558config HW_RANDOM_XIPHERA
559	tristate "Xiphera FPGA based True Random Number Generator support"
560	depends on HAS_IOMEM
561	help
562	  This driver provides kernel-side support for Xiphera True Random
563	  Number Generator Intellectual Property Core.
564
565	  To compile this driver as a module, choose M here: the
566	  module will be called xiphera-trng.
567
568config HW_RANDOM_ARM_SMCCC_TRNG
569	tristate "Arm SMCCC TRNG firmware interface support"
570	depends on HAVE_ARM_SMCCC_DISCOVERY
571	default HW_RANDOM
572	help
573	  Say 'Y' to enable the True Random Number Generator driver using
574	  the Arm SMCCC TRNG firmware interface. This reads entropy from
575	  higher exception levels (firmware, hypervisor). Uses SMCCC for
576	  communicating with the firmware:
577	  https://developer.arm.com/documentation/den0098/latest/
578
579	  To compile this driver as a module, choose M here: the
580	  module will be called arm_smccc_trng.
581
582config HW_RANDOM_CN10K
583	tristate "Marvell CN10K Random Number Generator support"
584	depends on HW_RANDOM && PCI && (ARM64 || (64BIT && COMPILE_TEST))
585	default HW_RANDOM if ARCH_THUNDER
586	help
587	  This driver provides support for the True Random Number
588	  generator available in Marvell CN10K SoCs.
589
590	  To compile this driver as a module, choose M here.
591	  The module will be called cn10k_rng. If unsure, say Y.
592
593config HW_RANDOM_JH7110
594	tristate "StarFive JH7110 Random Number Generator support"
595	depends on SOC_STARFIVE || COMPILE_TEST
596	help
597	  This driver provides support for the True Random Number
598	  Generator in StarFive JH7110 SoCs.
599
600	  To compile this driver as a module, choose M here.
601	  The module will be called jh7110-trng.
602
603config HW_RANDOM_ROCKCHIP
604	tristate "Rockchip True Random Number Generator"
605	depends on HW_RANDOM && (ARCH_ROCKCHIP || COMPILE_TEST)
606	depends on HAS_IOMEM
607	default HW_RANDOM
608	help
609	  This driver provides kernel-side support for the True Random Number
610	  Generator hardware found on some Rockchip SoCs like RK3566, RK3568
611	  or RK3588.
612
613	  To compile this driver as a module, choose M here: the
614	  module will be called rockchip-rng.
615
616	  If unsure, say Y.
617
618endif # HW_RANDOM
619
620config UML_RANDOM
621	depends on UML
622	select HW_RANDOM
623	tristate "UML Random Number Generator support"
624	help
625	  This option enables UML's "hardware" random number generator.  It
626	  attaches itself to the host's /dev/random, supplying as much entropy
627	  as the host has, rather than the small amount the UML gets from its
628	  own drivers. It registers itself as a rng-core driver thus providing
629	  a device which is usually called /dev/hwrng. This hardware random
630	  number generator does feed into the kernel's random number generator
631	  entropy pool.
632
633	  If unsure, say Y.
634