xref: /linux/drivers/char/hw_random/Kconfig (revision 4b99990cdf9560e8a071640baf19f312e6ae02f4) 
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_HISI_TRNG
377	tristate "HiSilicon True Random Number Generator support"
378	depends on ARM64 && ACPI
379	help
380	  This driver provides kernel-side support for the True Random Number
381	  Generator hardware found on some HiSilicon SoCs.
382
383	  To compile this driver as a module, choose M here: the module will be
384	  called hisi-trng-v2.
385
386config HW_RANDOM_ST
387	tristate "ST Microelectronics HW Random Number Generator support"
388	depends on ARCH_STI || COMPILE_TEST
389	help
390	  This driver provides kernel-side support for the Random Number
391	  Generator hardware found on STi series of SoCs.
392
393	  To compile this driver as a module, choose M here: the
394	  module will be called st-rng.
395
396config HW_RANDOM_XGENE
397	tristate "APM X-Gene True Random Number Generator (TRNG) support"
398	depends on ARCH_XGENE || COMPILE_TEST
399	default HW_RANDOM
400	help
401	  This driver provides kernel-side support for the Random Number
402	  Generator hardware found on APM X-Gene SoC.
403
404	  To compile this driver as a module, choose M here: the
405	  module will be called xgene_rng.
406
407	  If unsure, say Y.
408
409config HW_RANDOM_STM32
410	tristate "STMicroelectronics STM32 random number generator"
411	depends on ARCH_STM32 || COMPILE_TEST
412	depends on HAS_IOMEM
413	default HW_RANDOM
414	help
415	  This driver provides kernel-side support for the Random Number
416	  Generator hardware found on STM32 microcontrollers.
417
418	  To compile this driver as a module, choose M here: the
419	  module will be called stm32-rng.
420
421	  If unsure, say N.
422
423config HW_RANDOM_PIC32
424	tristate "Microchip PIC32 Random Number Generator support"
425	depends on MACH_PIC32 || COMPILE_TEST
426	default HW_RANDOM if MACH_PIC32
427	help
428	  This driver provides kernel-side support for the Random Number
429	  Generator hardware found on a PIC32.
430
431	  To compile this driver as a module, choose M here. the
432	  module will be called pic32-rng.
433
434	  If unsure, say Y.
435
436config HW_RANDOM_POLARFIRE_SOC
437	tristate "Microchip PolarFire SoC Random Number Generator support"
438	depends on HW_RANDOM && POLARFIRE_SOC_SYS_CTRL
439	help
440	  This driver provides kernel-side support for the Random Number
441	  Generator hardware found on PolarFire SoC (MPFS).
442
443	  To compile this driver as a module, choose M here. The
444	  module will be called mfps_rng.
445
446	  If unsure, say N.
447
448
449config HW_RANDOM_MESON
450	tristate "Amlogic Meson Random Number Generator support"
451	depends on ARCH_MESON || COMPILE_TEST
452	depends on HAS_IOMEM && OF
453	default HW_RANDOM if ARCH_MESON
454	help
455	  This driver provides kernel-side support for the Random Number
456	  Generator hardware found on Amlogic Meson SoCs.
457
458	  To compile this driver as a module, choose M here. the
459	  module will be called meson-rng.
460
461	  If unsure, say Y.
462
463config HW_RANDOM_CAVIUM
464	tristate "Cavium ThunderX Random Number Generator support"
465	depends on PCI
466	depends on ARCH_THUNDER || (ARM64 && COMPILE_TEST)
467	default HW_RANDOM
468	help
469	  This driver provides kernel-side support for the Random Number
470	  Generator hardware found on Cavium SoCs.
471
472	  To compile this driver as a module, choose M here: the
473	  module will be called cavium_rng.
474
475	  If unsure, say Y.
476
477config HW_RANDOM_MTK
478	tristate "Mediatek Random Number Generator support"
479	depends on ARCH_MEDIATEK || COMPILE_TEST
480	depends on HAS_IOMEM && OF
481	default HW_RANDOM if ARCH_MEDIATEK
482	help
483	  This driver provides kernel-side support for the Random Number
484	  Generator hardware found on Mediatek SoCs.
485
486	  To compile this driver as a module, choose M here. the
487	  module will be called mtk-rng.
488
489	  If unsure, say Y.
490
491config HW_RANDOM_S390
492	tristate "S390 True Random Number Generator support"
493	depends on S390
494	default HW_RANDOM
495	help
496	  This driver provides kernel-side support for the True
497	  Random Number Generator available as CPACF extension
498	  on modern s390 hardware platforms.
499
500	  To compile this driver as a module, choose M here: the
501	  module will be called s390-trng.
502
503	  If unsure, say Y.
504
505config HW_RANDOM_EXYNOS
506	tristate "Samsung Exynos True Random Number Generator support"
507	depends on ARCH_EXYNOS || COMPILE_TEST
508	depends on HAS_IOMEM
509	default HW_RANDOM if ARCH_EXYNOS
510	help
511	  This driver provides support for the True Random Number
512	  Generator available in Exynos SoCs.
513
514	  To compile this driver as a module, choose M here: the module
515	  will be called exynos-trng.
516
517	  If unsure, say Y.
518
519config HW_RANDOM_OPTEE
520	tristate "OP-TEE based Random Number Generator support"
521	depends on OPTEE
522	default HW_RANDOM
523	help
524	  This  driver provides support for OP-TEE based Random Number
525	  Generator on ARM SoCs where hardware entropy sources are not
526	  accessible to normal world (Linux).
527
528	  To compile this driver as a module, choose M here: the module
529	  will be called optee-rng.
530
531	  If unsure, say Y.
532
533config HW_RANDOM_NPCM
534	tristate "NPCM Random Number Generator support"
535	depends on ARCH_NPCM || COMPILE_TEST
536	depends on HAS_IOMEM
537	default HW_RANDOM if ARCH_NPCM
538	help
539	  This driver provides support for the Random Number
540	  Generator hardware available in Nuvoton NPCM SoCs.
541
542	  To compile this driver as a module, choose M here: the
543	  module will be called npcm-rng.
544
545	  If unsure, say Y.
546
547config HW_RANDOM_KEYSTONE
548	tristate "TI Keystone NETCP SA Hardware random number generator"
549	depends on ARCH_KEYSTONE || COMPILE_TEST
550	depends on HAS_IOMEM && OF
551	default HW_RANDOM
552	help
553	  This option enables Keystone's hardware random generator.
554
555config HW_RANDOM_CCTRNG
556	tristate "Arm CryptoCell True Random Number Generator support"
557	depends on HAS_IOMEM && OF
558	help
559	  Say 'Y' to enable the True Random Number Generator driver for the
560	  Arm TrustZone CryptoCell family of processors.
561	  Currently the CryptoCell 713 and 703 are supported.
562	  The driver is supported only in SoC where Trusted Execution
563	  Environment is not used.
564	  Choose 'M' to compile this driver as a module. The module
565	  will be called cctrng.
566	  If unsure, say 'N'.
567
568config HW_RANDOM_XIPHERA
569	tristate "Xiphera FPGA based True Random Number Generator support"
570	depends on HAS_IOMEM
571	help
572	  This driver provides kernel-side support for Xiphera True Random
573	  Number Generator Intellectual Property Core.
574
575	  To compile this driver as a module, choose M here: the
576	  module will be called xiphera-trng.
577
578config HW_RANDOM_ARM_SMCCC_TRNG
579	tristate "Arm SMCCC TRNG firmware interface support"
580	depends on HAVE_ARM_SMCCC_DISCOVERY
581	default HW_RANDOM
582	help
583	  Say 'Y' to enable the True Random Number Generator driver using
584	  the Arm SMCCC TRNG firmware interface. This reads entropy from
585	  higher exception levels (firmware, hypervisor). Uses SMCCC for
586	  communicating with the firmware:
587	  https://developer.arm.com/documentation/den0098/latest/
588
589	  To compile this driver as a module, choose M here: the
590	  module will be called arm_smccc_trng.
591
592config HW_RANDOM_CN10K
593	tristate "Marvell CN10K Random Number Generator support"
594	depends on HW_RANDOM && PCI && (ARM64 || (64BIT && COMPILE_TEST))
595	default HW_RANDOM if ARCH_THUNDER
596	help
597	  This driver provides support for the True Random Number
598	  generator available in Marvell CN10K SoCs.
599
600	  To compile this driver as a module, choose M here.
601	  The module will be called cn10k_rng. If unsure, say Y.
602
603config HW_RANDOM_JH7110
604	tristate "StarFive JH7110 Random Number Generator support"
605	depends on SOC_STARFIVE || COMPILE_TEST
606	help
607	  This driver provides support for the True Random Number
608	  Generator in StarFive JH7110 SoCs.
609
610	  To compile this driver as a module, choose M here.
611	  The module will be called jh7110-trng.
612
613config HW_RANDOM_ROCKCHIP
614	tristate "Rockchip True Random Number Generator"
615	depends on HW_RANDOM && (ARCH_ROCKCHIP || COMPILE_TEST)
616	depends on HAS_IOMEM
617	default HW_RANDOM
618	help
619	  This driver provides kernel-side support for the True Random Number
620	  Generator hardware found on some Rockchip SoCs like RK3566, RK3568
621	  or RK3588.
622
623	  To compile this driver as a module, choose M here: the
624	  module will be called rockchip-rng.
625
626	  If unsure, say Y.
627
628config HW_RANDOM_XILINX
629	tristate "Support for Xilinx True Random Generator"
630	depends on ZYNQMP_FIRMWARE || COMPILE_TEST
631	select CRYPTO_LIB_SHA512
632	help
633	  Xilinx Versal SoC driver provides kernel-side support for True Random Number
634	  Generator and Pseudo random Number in CTR_DRBG mode as defined in NIST SP800-90A.
635
636	  To compile this driver as a module, choose M here: the module
637	  will be called xilinx-trng.
638
639endif # HW_RANDOM
640
641config UML_RANDOM
642	depends on UML
643	select HW_RANDOM
644	tristate "UML Random Number Generator support"
645	help
646	  This option enables UML's "hardware" random number generator.  It
647	  attaches itself to the host's /dev/random, supplying as much entropy
648	  as the host has, rather than the small amount the UML gets from its
649	  own drivers. It registers itself as a rng-core driver thus providing
650	  a device which is usually called /dev/hwrng. This hardware random
651	  number generator does feed into the kernel's random number generator
652	  entropy pool.
653
654	  If unsure, say Y.
655