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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c 
 kernel/drivers/char/hw_random/Kconfig
....@@ -1,3 +1,4 @@
1
+# SPDX-License-Identifier: GPL-2.0-only
12 #
23 # Hardware Random Number Generator (RNG) configuration
34 #
....@@ -5,7 +6,7 @@
56 menuconfig HW_RANDOM
67 	tristate "Hardware Random Number Generator Core support"
78 	default m
8
-	---help---
9
+	help
910 	  Hardware Random Number Generator Core infrastructure.
1011 
1112 	  To compile this driver as a module, choose M here: the
....@@ -23,7 +24,7 @@
2324 config HW_RANDOM_TIMERIOMEM
2425 	tristate "Timer IOMEM HW Random Number Generator support"
2526 	depends on HAS_IOMEM
26
-	---help---
27
+	help
2728 	  This driver provides kernel-side support for a generic Random
2829 	  Number Generator used by reading a 'dumb' iomem address that
2930 	  is to be read no faster than, for example, once a second;
....@@ -38,7 +39,7 @@
3839 	tristate "Intel HW Random Number Generator support"
3940 	depends on (X86 || IA64) && PCI
4041 	default HW_RANDOM
41
-	---help---
42
+	help
4243 	  This driver provides kernel-side support for the Random Number
4344 	  Generator hardware found on Intel i8xx-based motherboards.
4445 
....@@ -51,7 +52,7 @@
5152 	tristate "AMD HW Random Number Generator support"
5253 	depends on (X86 || PPC_MAPLE) && PCI
5354 	default HW_RANDOM
54
-	---help---
55
+	help
5556 	  This driver provides kernel-side support for the Random Number
5657 	  Generator hardware found on AMD 76x-based motherboards.
5758 
....@@ -64,7 +65,7 @@
6465 	tristate "Atmel Random Number Generator support"
6566 	depends on ARCH_AT91 && HAVE_CLK && OF
6667 	default HW_RANDOM
67
-	---help---
68
+	help
6869 	  This driver provides kernel-side support for the Random Number
6970 	  Generator hardware found on Atmel AT91 devices.
7071 
....@@ -73,12 +74,22 @@
7374 
7475 	  If unsure, say Y.
7576 
77
+config 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
+
7687 config HW_RANDOM_BCM2835
7788 	tristate "Broadcom BCM2835/BCM63xx Random Number Generator support"
7889 	depends on ARCH_BCM2835 || ARCH_BCM_NSP || ARCH_BCM_5301X || \
7990 		   ARCH_BCM_63XX || BCM63XX || BMIPS_GENERIC
8091 	default HW_RANDOM
81
-	---help---
92
+	help
8293 	  This driver provides kernel-side support for the Random Number
8394 	  Generator hardware found on the Broadcom BCM2835 and BCM63xx SoCs.
8495 
....@@ -89,9 +100,9 @@
89100 
90101 config HW_RANDOM_IPROC_RNG200
91102 	tristate "Broadcom iProc/STB RNG200 support"
92
-	depends on ARCH_BCM_IPROC || ARCH_BRCMSTB
103
+	depends on ARCH_BCM_IPROC || ARCH_BCM2835 || ARCH_BRCMSTB
93104 	default HW_RANDOM
94
-	---help---
105
+	help
95106 	  This driver provides kernel-side support for the RNG200
96107 	  hardware found on the Broadcom iProc and STB SoCs.
97108 
....@@ -104,7 +115,7 @@
104115 	tristate "AMD Geode HW Random Number Generator support"
105116 	depends on X86_32 && PCI
106117 	default HW_RANDOM
107
-	---help---
118
+	help
108119 	  This driver provides kernel-side support for the Random Number
109120 	  Generator hardware found on the AMD Geode LX.
110121 
....@@ -117,7 +128,7 @@
117128 	tristate "Niagara2 Random Number Generator support"
118129 	depends on SPARC64
119130 	default HW_RANDOM
120
-	---help---
131
+	help
121132 	  This driver provides kernel-side support for the Random Number
122133 	  Generator hardware found on Niagara2 cpus.
123134 
....@@ -130,7 +141,7 @@
130141 	tristate "VIA HW Random Number Generator support"
131142 	depends on X86
132143 	default HW_RANDOM
133
-	---help---
144
+	help
134145 	  This driver provides kernel-side support for the Random Number
135146 	  Generator hardware found on VIA based motherboards.
136147 
....@@ -143,7 +154,7 @@
143154 	tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support"
144155 	depends on ARCH_IXP4XX
145156 	default HW_RANDOM
146
-	---help---
157
+	help
147158 	  This driver provides kernel-side support for the Pseudo-Random
148159 	  Number Generator hardware found on the Intel IXP45x/46x NPU.
149160 
....@@ -156,7 +167,7 @@
156167 	tristate "OMAP Random Number Generator support"
157168 	depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || ARCH_MVEBU
158169 	default HW_RANDOM
159
- 	---help---
170
+	help
160171  	  This driver provides kernel-side support for the Random Number
161172 	  Generator hardware found on OMAP16xx, OMAP2/3/4/5, AM33xx/AM43xx
162173 	  multimedia processors, and Marvell Armada 7k/8k SoCs.
....@@ -170,7 +181,7 @@
170181 	tristate "OMAP3 ROM Random Number Generator support"
171182 	depends on ARCH_OMAP3
172183 	default HW_RANDOM
173
-	---help---
184
+	help
174185 	  This driver provides kernel-side support for the Random Number
175186 	  Generator hardware found on OMAP34xx processors.
176187 
....@@ -183,7 +194,7 @@
183194 	tristate "Octeon Random Number Generator support"
184195 	depends on CAVIUM_OCTEON_SOC
185196 	default HW_RANDOM
186
-	---help---
197
+	help
187198 	  This driver provides kernel-side support for the Random Number
188199 	  Generator hardware found on Octeon processors.
189200 
....@@ -196,7 +207,7 @@
196207 	tristate "PA Semi HW Random Number Generator support"
197208 	depends on PPC_PASEMI
198209 	default HW_RANDOM
199
-	---help---
210
+	help
200211 	  This driver provides kernel-side support for the Random Number
201212 	  Generator hardware found on PA Semi PWRficient SoCs.
202213 
....@@ -208,7 +219,7 @@
208219 config HW_RANDOM_VIRTIO
209220 	tristate "VirtIO Random Number Generator support"
210221 	depends on VIRTIO
211
-	---help---
222
+	help
212223 	  This driver provides kernel-side support for the virtual Random Number
213224 	  Generator hardware.
214225 
....@@ -219,7 +230,7 @@
219230 	tristate "TX4939 Random Number Generator support"
220231 	depends on SOC_TX4939
221232 	default HW_RANDOM
222
-	---help---
233
+	help
223234 	  This driver provides kernel-side support for the Random Number
224235 	  Generator hardware found on TX4939 SoC.
225236 
....@@ -232,7 +243,7 @@
232243 	tristate "Freescale i.MX RNGA Random Number Generator"
233244 	depends on SOC_IMX31
234245 	default HW_RANDOM
235
-	---help---
246
+	help
236247 	  This driver provides kernel-side support for the Random Number
237248 	  Generator hardware found on Freescale i.MX processors.
238249 
....@@ -243,9 +254,10 @@
243254 
244255 config HW_RANDOM_IMX_RNGC
245256 	tristate "Freescale i.MX RNGC Random Number Generator"
246
-	depends on ARCH_MXC
257
+	depends on HAS_IOMEM && HAVE_CLK
258
+	depends on SOC_IMX25 || SOC_IMX6SL || SOC_IMX6SLL || SOC_IMX6UL || COMPILE_TEST
247259 	default HW_RANDOM
248
-	---help---
260
+	help
249261 	  This driver provides kernel-side support for the Random Number
250262 	  Generator Version C hardware found on some Freescale i.MX
251263 	  processors. Version B is also supported by this driver.
....@@ -255,11 +267,40 @@
255267 
256268 	  If unsure, say Y.
257269 
270
+config HW_RANDOM_INGENIC_RNG
271
+	tristate "Ingenic Random Number Generator support"
272
+	depends on HW_RANDOM
273
+	depends on MACH_JZ4780 || MACH_X1000
274
+	default HW_RANDOM
275
+	help
276
+	  This driver provides kernel-side support for the Random Number Generator
277
+	  hardware found in ingenic JZ4780 and X1000 SoC. MIPS Creator CI20 uses
278
+	  JZ4780 SoC, YSH & ATIL CU1000-Neo uses X1000 SoC.
279
+
280
+	  To compile this driver as a module, choose M here: the
281
+	  module will be called ingenic-rng.
282
+
283
+	  If unsure, say Y.
284
+
285
+config HW_RANDOM_INGENIC_TRNG
286
+	tristate "Ingenic True Random Number Generator support"
287
+	depends on HW_RANDOM
288
+	depends on MACH_X1830
289
+	default HW_RANDOM
290
+	help
291
+	  This driver provides kernel-side support for the True Random Number Generator
292
+	  hardware found in ingenic X1830 SoC. YSH & ATIL CU1830-Neo uses X1830 SoC.
293
+
294
+	  To compile this driver as a module, choose M here: the
295
+	  module will be called ingenic-trng.
296
+
297
+	  If unsure, say Y.
298
+
258299 config HW_RANDOM_NOMADIK
259300 	tristate "ST-Ericsson Nomadik Random Number Generator support"
260301 	depends on ARCH_NOMADIK
261302 	default HW_RANDOM
262
-	---help---
303
+	help
263304 	  This driver provides kernel-side support for the Random Number
264305 	  Generator hardware found on ST-Ericsson SoCs (8815 and 8500).
265306 
....@@ -272,7 +313,7 @@
272313 	tristate "pSeries HW Random Number Generator support"
273314 	depends on PPC64 && IBMVIO
274315 	default HW_RANDOM
275
-	---help---
316
+	help
276317 	  This driver provides kernel-side support for the Random Number
277318 	  Generator hardware found on POWER7+ machines and above
278319 
....@@ -285,7 +326,7 @@
285326 	tristate "PowerNV Random Number Generator support"
286327 	depends on PPC_POWERNV
287328 	default HW_RANDOM
288
-	---help---
329
+	help
289330 	  This is the driver for Random Number Generator hardware found
290331 	  in POWER7+ and above machines for PowerNV platform.
291332 
....@@ -298,7 +339,7 @@
298339 	tristate "Hisilicon Random Number Generator support"
299340 	depends on HW_RANDOM && ARCH_HISI
300341 	default HW_RANDOM
301
-	---help---
342
+	help
302343 	  This driver provides kernel-side support for the Random Number
303344 	  Generator hardware found on Hisilicon Hip04 and Hip05 SoC.
304345 
....@@ -307,10 +348,23 @@
307348 
308349 	  If unsure, say Y.
309350 
351
+config HW_RANDOM_HISI_V2
352
+	tristate "HiSilicon True Random Number Generator V2 support"
353
+	depends on HW_RANDOM && ARM64 && ACPI
354
+	default HW_RANDOM
355
+	help
356
+	  This driver provides kernel-side support for the True Random Number
357
+	  Generator V2 hardware found on HiSilicon Hi1620 SoC.
358
+
359
+	  To compile this driver as a module, choose M here: the
360
+	  module will be called hisi-trng-v2.
361
+
362
+	  If unsure, say Y.
363
+
310364 config HW_RANDOM_ST
311365 	tristate "ST Microelectronics HW Random Number Generator support"
312366 	depends on HW_RANDOM && ARCH_STI
313
-	---help---
367
+	help
314368 	  This driver provides kernel-side support for the Random Number
315369 	  Generator hardware found on STi series of SoCs.
316370 
....@@ -321,7 +375,7 @@
321375 	tristate "APM X-Gene True Random Number Generator (TRNG) support"
322376 	depends on HW_RANDOM && ARCH_XGENE
323377 	default HW_RANDOM
324
-	---help---
378
+	help
325379 	  This driver provides kernel-side support for the Random Number
326380 	  Generator hardware found on APM X-Gene SoC.
327381 
....@@ -348,7 +402,7 @@
348402 	tristate "Microchip PIC32 Random Number Generator support"
349403 	depends on HW_RANDOM && MACH_PIC32
350404 	default y
351
-	---help---
405
+	help
352406 	  This driver provides kernel-side support for the Random Number
353407 	  Generator hardware found on a PIC32.
354408 
....@@ -362,7 +416,7 @@
362416 	depends on HW_RANDOM
363417 	depends on ARCH_MESON || COMPILE_TEST
364418 	default y
365
-	---help---
419
+	help
366420 	  This driver provides kernel-side support for the Random Number
367421 	  Generator hardware found on Amlogic Meson SoCs.
368422 
....@@ -372,24 +426,24 @@
372426 	  If unsure, say Y.
373427 
374428 config HW_RANDOM_CAVIUM
375
-       tristate "Cavium ThunderX Random Number Generator support"
376
-       depends on HW_RANDOM && PCI && (ARM64 || (COMPILE_TEST && 64BIT))
377
-       default HW_RANDOM
378
-       ---help---
379
-         This driver provides kernel-side support for the Random Number
380
-         Generator hardware found on Cavium SoCs.
429
+	tristate "Cavium ThunderX Random Number Generator support"
430
+	depends on HW_RANDOM && PCI && ARCH_THUNDER
431
+	default HW_RANDOM
432
+	help
433
+	  This driver provides kernel-side support for the Random Number
434
+	  Generator hardware found on Cavium SoCs.
381435 
382
-         To compile this driver as a module, choose M here: the
383
-         module will be called cavium_rng.
436
+	  To compile this driver as a module, choose M here: the
437
+	  module will be called cavium_rng.
384438 
385
-         If unsure, say Y.
439
+	  If unsure, say Y.
386440 
387441 config HW_RANDOM_MTK
388442 	tristate "Mediatek Random Number Generator support"
389443 	depends on HW_RANDOM
390444 	depends on ARCH_MEDIATEK || COMPILE_TEST
391445 	default y
392
-	---help---
446
+	help
393447 	  This driver provides kernel-side support for the Random Number
394448 	  Generator hardware found on Mediatek SoCs.
395449 
....@@ -402,7 +456,7 @@
402456 	tristate "S390 True Random Number Generator support"
403457 	depends on S390
404458 	default HW_RANDOM
405
-	---help---
459
+	help
406460 	  This driver provides kernel-side support for the True
407461 	  Random Number Generator available as CPACF extension
408462 	  on modern s390 hardware platforms.
....@@ -416,7 +470,7 @@
416470 	tristate "Samsung Exynos True Random Number Generator support"
417471 	depends on ARCH_EXYNOS || COMPILE_TEST
418472 	default HW_RANDOM
419
-	---help---
473
+	help
420474 	  This driver provides support for the True Random Number
421475 	  Generator available in Exynos SoCs.
422476 
....@@ -424,6 +478,63 @@
424478 	  will be called exynos-trng.
425479 
426480 	  If unsure, say Y.
481
+
482
+config 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
+
496
+config HW_RANDOM_NPCM
497
+	tristate "NPCM Random Number Generator support"
498
+	depends on ARCH_NPCM || COMPILE_TEST
499
+	default HW_RANDOM
500
+	help
501
+ 	  This driver provides support for the Random Number
502
+	  Generator hardware available in Nuvoton NPCM SoCs.
503
+
504
+	  To compile this driver as a module, choose M here: the
505
+	  module will be called npcm-rng.
506
+
507
+ 	  If unsure, say Y.
508
+
509
+config HW_RANDOM_KEYSTONE
510
+	depends on ARCH_KEYSTONE || COMPILE_TEST
511
+	default HW_RANDOM
512
+	tristate "TI Keystone NETCP SA Hardware random number generator"
513
+	help
514
+	  This option enables Keystone's hardware random generator.
515
+
516
+config HW_RANDOM_CCTRNG
517
+	tristate "Arm CryptoCell True Random Number Generator support"
518
+	depends on HAS_IOMEM && OF
519
+	help
520
+	  Say 'Y' to enable the True Random Number Generator driver for the
521
+	  Arm TrustZone CryptoCell family of processors.
522
+	  Currently the CryptoCell 713 and 703 are supported.
523
+	  The driver is supported only in SoC where Trusted Execution
524
+	  Environment is not used.
525
+	  Choose 'M' to compile this driver as a module. The module
526
+	  will be called cctrng.
527
+	  If unsure, say 'N'.
528
+
529
+config HW_RANDOM_XIPHERA
530
+	tristate "Xiphera FPGA based True Random Number Generator support"
531
+	depends on HAS_IOMEM
532
+	help
533
+	  This driver provides kernel-side support for Xiphera True Random
534
+	  Number Generator Intellectual Property Core.
535
+
536
+	  To compile this driver as a module, choose M here: the
537
+	  module will be called xiphera-trng.
427538 
428539 config HW_RANDOM_ROCKCHIP
429540 	tristate "Rockchip Random Number Generator support"
....@@ -441,22 +552,15 @@
441552 
442553 config UML_RANDOM
443554 	depends on UML
444
-	tristate "Hardware random number generator"
555
+	select HW_RANDOM
556
+	tristate "UML Random Number Generator support"
445557 	help
446558 	  This option enables UML's "hardware" random number generator.  It
447559 	  attaches itself to the host's /dev/random, supplying as much entropy
448560 	  as the host has, rather than the small amount the UML gets from its
449
-	  own drivers.  It registers itself as a standard hardware random number
450
-	  generator, major 10, minor 183, and the canonical device name is
451
-	  /dev/hwrng.
452
-	  The way to make use of this is to install the rng-tools package
453
-	  (check your distro, or download from
454
-	  http://sourceforge.net/projects/gkernel/).  rngd periodically reads
455
-	  /dev/hwrng and injects the entropy into /dev/random.
561
+	  own drivers. It registers itself as a rng-core driver thus providing
562
+	  a device which is usually called /dev/hwrng. This hardware random
563
+	  number generator does feed into the kernel's random number generator
564
+	  entropy pool.
456565 
457
-config HW_RANDOM_KEYSTONE
458
-	depends on ARCH_KEYSTONE
459
-	default HW_RANDOM
460
-	tristate "TI Keystone NETCP SA Hardware random number generator"
461
-	help
462
-	  This option enables Keystone's hardware random generator.
566
+	  If unsure, say Y.