xref: /openbmc/linux/drivers/char/hw_random/Kconfig (revision 1ce1cd82)
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 || 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 || PPC_MAPLE || 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_ATMEL
66	tristate "Atmel Random Number Generator support"
67	depends on (ARCH_AT91 || COMPILE_TEST)
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
78config HW_RANDOM_BA431
79	tristate "Silex Insight BA431 Random Number Generator support"
80	depends on HAS_IOMEM
81	help
82	  This driver provides kernel-side support for the Random Number
83	  Generator hardware based on Silex Insight BA431 IP.
84
85	  To compile this driver as a module, choose M here: the
86	  module will be called ba431-rng.
87
88config HW_RANDOM_BCM2835
89	tristate "Broadcom BCM2835/BCM63xx Random Number Generator support"
90	depends on ARCH_BCM2835 || ARCH_BCM_NSP || ARCH_BCM_5301X || \
91		   ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC || COMPILE_TEST
92	default HW_RANDOM
93	help
94	  This driver provides kernel-side support for the Random Number
95	  Generator hardware found on the Broadcom BCM2835 and BCM63xx SoCs.
96
97	  To compile this driver as a module, choose M here: the
98	  module will be called bcm2835-rng
99
100	  If unsure, say Y.
101
102config HW_RANDOM_IPROC_RNG200
103	tristate "Broadcom iProc/STB RNG200 support"
104	depends on ARCH_BCM_IPROC || ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST
105	default HW_RANDOM
106	help
107	  This driver provides kernel-side support for the RNG200
108	  hardware found on the Broadcom iProc and STB SoCs.
109
110	  To compile this driver as a module, choose M here: the
111	  module will be called iproc-rng200
112
113	  If unsure, say Y.
114
115config HW_RANDOM_GEODE
116	tristate "AMD Geode HW Random Number Generator support"
117	depends on (X86_32 || COMPILE_TEST)
118	depends on PCI
119	default HW_RANDOM
120	help
121	  This driver provides kernel-side support for the Random Number
122	  Generator hardware found on the AMD Geode LX.
123
124	  To compile this driver as a module, choose M here: the
125	  module will be called geode-rng.
126
127	  If unsure, say Y.
128
129config HW_RANDOM_N2RNG
130	tristate "Niagara2 Random Number Generator support"
131	depends on SPARC64
132	default HW_RANDOM
133	help
134	  This driver provides kernel-side support for the Random Number
135	  Generator hardware found on Niagara2 cpus.
136
137	  To compile this driver as a module, choose M here: the
138	  module will be called n2-rng.
139
140	  If unsure, say Y.
141
142config HW_RANDOM_VIA
143	tristate "VIA HW Random Number Generator support"
144	depends on X86
145	default HW_RANDOM
146	help
147	  This driver provides kernel-side support for the Random Number
148	  Generator hardware found on VIA based motherboards.
149
150	  To compile this driver as a module, choose M here: the
151	  module will be called via-rng.
152
153	  If unsure, say Y.
154
155config HW_RANDOM_IXP4XX
156	tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support"
157	depends on ARCH_IXP4XX || COMPILE_TEST
158	default HW_RANDOM
159	help
160	  This driver provides kernel-side support for the Pseudo-Random
161	  Number Generator hardware found on the Intel IXP45x/46x NPU.
162
163	  To compile this driver as a module, choose M here: the
164	  module will be called ixp4xx-rng.
165
166	  If unsure, say Y.
167
168config HW_RANDOM_OMAP
169	tristate "OMAP Random Number Generator support"
170	depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || ARCH_MVEBU || ARCH_K3 || COMPILE_TEST
171	default HW_RANDOM
172	help
173	  This driver provides kernel-side support for the Random Number
174	  Generator hardware found on OMAP16xx, OMAP2/3/4/5, AM33xx/AM43xx
175	  multimedia processors, and Marvell Armada 7k/8k SoCs.
176
177	  To compile this driver as a module, choose M here: the
178	  module will be called omap-rng.
179
180	  If unsure, say Y.
181
182config HW_RANDOM_OMAP3_ROM
183	tristate "OMAP3 ROM Random Number Generator support"
184	depends on ARCH_OMAP3 || COMPILE_TEST
185	default HW_RANDOM
186	help
187	  This driver provides kernel-side support for the Random Number
188	  Generator hardware found on OMAP34xx processors.
189
190	  To compile this driver as a module, choose M here: the
191	  module will be called omap3-rom-rng.
192
193	  If unsure, say Y.
194
195config HW_RANDOM_OCTEON
196	tristate "Octeon Random Number Generator support"
197	depends on CAVIUM_OCTEON_SOC
198	default HW_RANDOM
199	help
200	  This driver provides kernel-side support for the Random Number
201	  Generator hardware found on Octeon processors.
202
203	  To compile this driver as a module, choose M here: the
204	  module will be called octeon-rng.
205
206	  If unsure, say Y.
207
208config HW_RANDOM_PASEMI
209	tristate "PA Semi HW Random Number Generator support"
210	depends on PPC_PASEMI || (PPC && COMPILE_TEST)
211	default HW_RANDOM
212	help
213	  This driver provides kernel-side support for the Random Number
214	  Generator hardware found on PA Semi PWRficient SoCs.
215
216	  To compile this driver as a module, choose M here: the
217	  module will be called pasemi-rng.
218
219	  If unsure, say Y.
220
221config HW_RANDOM_VIRTIO
222	tristate "VirtIO Random Number Generator support"
223	depends on VIRTIO
224	help
225	  This driver provides kernel-side support for the virtual Random Number
226	  Generator hardware.
227
228	  To compile this driver as a module, choose M here: the
229	  module will be called virtio-rng.  If unsure, say N.
230
231config HW_RANDOM_MXC_RNGA
232	tristate "Freescale i.MX RNGA Random Number Generator"
233	depends on SOC_IMX31 || COMPILE_TEST
234	default HW_RANDOM
235	help
236	  This driver provides kernel-side support for the Random Number
237	  Generator hardware found on Freescale i.MX processors.
238
239	  To compile this driver as a module, choose M here: the
240	  module will be called mxc-rnga.
241
242	  If unsure, say Y.
243
244config HW_RANDOM_IMX_RNGC
245	tristate "Freescale i.MX RNGC Random Number Generator"
246	depends on HAS_IOMEM
247	depends on SOC_IMX25 || SOC_IMX6SL || SOC_IMX6SLL || SOC_IMX6UL || COMPILE_TEST
248	default HW_RANDOM
249	help
250	  This driver provides kernel-side support for the Random Number
251	  Generator Version C hardware found on some Freescale i.MX
252	  processors. Version B is also supported by this driver.
253
254	  To compile this driver as a module, choose M here: the
255	  module will be called imx-rngc.
256
257	  If unsure, say Y.
258
259config HW_RANDOM_INGENIC_RNG
260	tristate "Ingenic Random Number Generator support"
261	depends on MACH_JZ4780 || MACH_X1000 || COMPILE_TEST
262	default HW_RANDOM
263	help
264	  This driver provides kernel-side support for the Random Number Generator
265	  hardware found in ingenic JZ4780 and X1000 SoC. MIPS Creator CI20 uses
266	  JZ4780 SoC, YSH & ATIL CU1000-Neo uses X1000 SoC.
267
268	  To compile this driver as a module, choose M here: the
269	  module will be called ingenic-rng.
270
271	  If unsure, say Y.
272
273config HW_RANDOM_INGENIC_TRNG
274	tristate "Ingenic True Random Number Generator support"
275	depends on MACH_X1830 || COMPILE_TEST
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 ARCH_HISI || COMPILE_TEST
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_HISTB
339	tristate "Hisilicon STB Random Number Generator support"
340	depends on ARCH_HISI || COMPILE_TEST
341	default ARCH_HISI
342	help
343	  This driver provides kernel-side support for the Random Number
344	  Generator hardware found on Hisilicon Hi37xx SoC.
345
346	  To compile this driver as a module, choose M here: the
347	  module will be called histb-rng.
348
349config HW_RANDOM_ST
350	tristate "ST Microelectronics HW Random Number Generator support"
351	depends on ARCH_STI || COMPILE_TEST
352	help
353	  This driver provides kernel-side support for the Random Number
354	  Generator hardware found on STi series of SoCs.
355
356	  To compile this driver as a module, choose M here: the
357	  module will be called st-rng.
358
359config HW_RANDOM_XGENE
360	tristate "APM X-Gene True Random Number Generator (TRNG) support"
361	depends on ARCH_XGENE || COMPILE_TEST
362	default HW_RANDOM
363	help
364	  This driver provides kernel-side support for the Random Number
365	  Generator hardware found on APM X-Gene SoC.
366
367	  To compile this driver as a module, choose M here: the
368	  module will be called xgene_rng.
369
370	  If unsure, say Y.
371
372config HW_RANDOM_STM32
373	tristate "STMicroelectronics STM32 random number generator"
374	depends on ARCH_STM32 || COMPILE_TEST
375	depends on HAS_IOMEM
376	default HW_RANDOM
377	help
378	  This driver provides kernel-side support for the Random Number
379	  Generator hardware found on STM32 microcontrollers.
380
381	  To compile this driver as a module, choose M here: the
382	  module will be called stm32-rng.
383
384	  If unsure, say N.
385
386config HW_RANDOM_PIC32
387	tristate "Microchip PIC32 Random Number Generator support"
388	depends on MACH_PIC32 || COMPILE_TEST
389	default HW_RANDOM if MACH_PIC32
390	help
391	  This driver provides kernel-side support for the Random Number
392	  Generator hardware found on a PIC32.
393
394	  To compile this driver as a module, choose M here. the
395	  module will be called pic32-rng.
396
397	  If unsure, say Y.
398
399config HW_RANDOM_POLARFIRE_SOC
400	tristate "Microchip PolarFire SoC Random Number Generator support"
401	depends on HW_RANDOM && POLARFIRE_SOC_SYS_CTRL
402	help
403	  This driver provides kernel-side support for the Random Number
404	  Generator hardware found on PolarFire SoC (MPFS).
405
406	  To compile this driver as a module, choose M here. The
407	  module will be called mfps_rng.
408
409	  If unsure, say N.
410
411
412config HW_RANDOM_MESON
413	tristate "Amlogic Meson Random Number Generator support"
414	depends on ARCH_MESON || COMPILE_TEST
415	depends on HAS_IOMEM && OF
416	default HW_RANDOM if ARCH_MESON
417	help
418	  This driver provides kernel-side support for the Random Number
419	  Generator hardware found on Amlogic Meson SoCs.
420
421	  To compile this driver as a module, choose M here. the
422	  module will be called meson-rng.
423
424	  If unsure, say Y.
425
426config HW_RANDOM_CAVIUM
427	tristate "Cavium ThunderX Random Number Generator support"
428	depends on PCI
429	depends on ARCH_THUNDER || (ARM64 && COMPILE_TEST)
430	default HW_RANDOM
431	help
432	  This driver provides kernel-side support for the Random Number
433	  Generator hardware found on Cavium SoCs.
434
435	  To compile this driver as a module, choose M here: the
436	  module will be called cavium_rng.
437
438	  If unsure, say Y.
439
440config HW_RANDOM_MTK
441	tristate "Mediatek Random Number Generator support"
442	depends on ARCH_MEDIATEK || COMPILE_TEST
443	depends on HAS_IOMEM && OF
444	default HW_RANDOM if ARCH_MEDIATEK
445	help
446	  This driver provides kernel-side support for the Random Number
447	  Generator hardware found on Mediatek SoCs.
448
449	  To compile this driver as a module, choose M here. the
450	  module will be called mtk-rng.
451
452	  If unsure, say Y.
453
454config HW_RANDOM_S390
455	tristate "S390 True Random Number Generator support"
456	depends on S390
457	default HW_RANDOM
458	help
459	  This driver provides kernel-side support for the True
460	  Random Number Generator available as CPACF extension
461	  on modern s390 hardware platforms.
462
463	  To compile this driver as a module, choose M here: the
464	  module will be called s390-trng.
465
466	  If unsure, say Y.
467
468config HW_RANDOM_EXYNOS
469	tristate "Samsung Exynos True Random Number Generator support"
470	depends on ARCH_EXYNOS || COMPILE_TEST
471	depends on HAS_IOMEM
472	default HW_RANDOM if ARCH_EXYNOS
473	help
474	  This driver provides support for the True Random Number
475	  Generator available in Exynos SoCs.
476
477	  To compile this driver as a module, choose M here: the module
478	  will be called exynos-trng.
479
480	  If unsure, say Y.
481
482config HW_RANDOM_OPTEE
483	tristate "OP-TEE based Random Number Generator support"
484	depends on OPTEE
485	default HW_RANDOM
486	help
487	  This  driver provides support for OP-TEE based Random Number
488	  Generator on ARM SoCs where hardware entropy sources are not
489	  accessible to normal world (Linux).
490
491	  To compile this driver as a module, choose M here: the module
492	  will be called optee-rng.
493
494	  If unsure, say Y.
495
496config HW_RANDOM_NPCM
497	tristate "NPCM Random Number Generator support"
498	depends on ARCH_NPCM || COMPILE_TEST
499	depends on HAS_IOMEM
500	default HW_RANDOM if ARCH_NPCM
501	help
502	  This driver provides support for the Random Number
503	  Generator hardware available in Nuvoton NPCM SoCs.
504
505	  To compile this driver as a module, choose M here: the
506	  module will be called npcm-rng.
507
508	  If unsure, say Y.
509
510config HW_RANDOM_KEYSTONE
511	depends on ARCH_KEYSTONE || COMPILE_TEST
512	depends on HAS_IOMEM && OF
513	default HW_RANDOM
514	tristate "TI Keystone NETCP SA Hardware random number generator"
515	help
516	  This option enables Keystone's hardware random generator.
517
518config HW_RANDOM_CCTRNG
519	tristate "Arm CryptoCell True Random Number Generator support"
520	depends on HAS_IOMEM && OF
521	help
522	  Say 'Y' to enable the True Random Number Generator driver for the
523	  Arm TrustZone CryptoCell family of processors.
524	  Currently the CryptoCell 713 and 703 are supported.
525	  The driver is supported only in SoC where Trusted Execution
526	  Environment is not used.
527	  Choose 'M' to compile this driver as a module. The module
528	  will be called cctrng.
529	  If unsure, say 'N'.
530
531config HW_RANDOM_XIPHERA
532	tristate "Xiphera FPGA based True Random Number Generator support"
533	depends on HAS_IOMEM
534	help
535	  This driver provides kernel-side support for Xiphera True Random
536	  Number Generator Intellectual Property Core.
537
538	  To compile this driver as a module, choose M here: the
539	  module will be called xiphera-trng.
540
541config HW_RANDOM_ARM_SMCCC_TRNG
542	tristate "Arm SMCCC TRNG firmware interface support"
543	depends on HAVE_ARM_SMCCC_DISCOVERY
544	default HW_RANDOM
545	help
546	  Say 'Y' to enable the True Random Number Generator driver using
547	  the Arm SMCCC TRNG firmware interface. This reads entropy from
548	  higher exception levels (firmware, hypervisor). Uses SMCCC for
549	  communicating with the firmware:
550	  https://developer.arm.com/documentation/den0098/latest/
551
552	  To compile this driver as a module, choose M here: the
553	  module will be called arm_smccc_trng.
554
555config HW_RANDOM_CN10K
556       tristate "Marvell CN10K Random Number Generator support"
557       depends on HW_RANDOM && PCI && (ARM64 || (64BIT && COMPILE_TEST))
558       default HW_RANDOM
559       help
560	 This driver provides support for the True Random Number
561	 generator available in Marvell CN10K SoCs.
562
563	 To compile this driver as a module, choose M here.
564	 The module will be called cn10k_rng. If unsure, say Y.
565
566config HW_RANDOM_JH7110
567	tristate "StarFive JH7110 Random Number Generator support"
568	depends on SOC_STARFIVE || COMPILE_TEST
569	help
570	  This driver provides support for the True Random Number
571	  Generator in StarFive JH7110 SoCs.
572
573	  To compile this driver as a module, choose M here.
574	  The module will be called jh7110-trng.
575
576endif # HW_RANDOM
577
578config UML_RANDOM
579	depends on UML
580	select HW_RANDOM
581	tristate "UML Random Number Generator support"
582	help
583	  This option enables UML's "hardware" random number generator.  It
584	  attaches itself to the host's /dev/random, supplying as much entropy
585	  as the host has, rather than the small amount the UML gets from its
586	  own drivers. It registers itself as a rng-core driver thus providing
587	  a device which is usually called /dev/hwrng. This hardware random
588	  number generator does feed into the kernel's random number generator
589	  entropy pool.
590
591	  If unsure, say Y.
592