drivers/char/hw_random/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0-only
   2 #
   3 # Hardware Random Number Generator (RNG) configuration
   4 #
   5
   6 menuconfig 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
  22 if HW_RANDOM
  23
  24 config 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
  38 config HW_RANDOM_INTEL
  39         tristate "Intel HW Random Number Generator support"
  40         depends on (X86 || IA64) && 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
  51 config HW_RANDOM_AMD
  52         tristate "AMD HW Random Number Generator support"
  53         depends on (X86 || PPC_MAPLE) && PCI
  54         default HW_RANDOM
  55         help
  56           This driver provides kernel-side support for the Random Number
  57           Generator hardware found on AMD 76x-based motherboards.
  58
  59           To compile this driver as a module, choose M here: the
  60           module will be called amd-rng.
  61
  62           If unsure, say Y.
  63
  64 config HW_RANDOM_ATMEL
  65         tristate "Atmel Random Number Generator support"
  66         depends on ARCH_AT91 && HAVE_CLK && OF
  67         default HW_RANDOM
  68         help
  69           This driver provides kernel-side support for the Random Number
  70           Generator hardware found on Atmel AT91 devices.
  71
  72           To compile this driver as a module, choose M here: the
  73           module will be called atmel-rng.
  74
  75           If unsure, say Y.
  76
  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
  87 config HW_RANDOM_BCM2835
  88         tristate "Broadcom BCM2835/BCM63xx Random Number Generator support"
  89         depends on ARCH_BCM2835 || ARCH_BCM_NSP || ARCH_BCM_5301X || \
  90                    ARCH_BCM_63XX || BCM63XX || BMIPS_GENERIC
  91         default HW_RANDOM
  92         help
  93           This driver provides kernel-side support for the Random Number
  94           Generator hardware found on the Broadcom BCM2835 and BCM63xx SoCs.
  95
  96           To compile this driver as a module, choose M here: the
  97           module will be called bcm2835-rng
  98
  99           If unsure, say Y.
 100
 101 config HW_RANDOM_IPROC_RNG200
 102         tristate "Broadcom iProc/STB RNG200 support"
 103         depends on ARCH_BCM_IPROC || ARCH_BCM2835 || ARCH_BRCMSTB
 104         default HW_RANDOM
 105         help
 106           This driver provides kernel-side support for the RNG200
 107           hardware found on the Broadcom iProc and STB SoCs.
 108
 109           To compile this driver as a module, choose M here: the
 110           module will be called iproc-rng200
 111
 112           If unsure, say Y.
 113
 114 config HW_RANDOM_GEODE
 115         tristate "AMD Geode HW Random Number Generator support"
 116         depends on X86_32 && PCI
 117         default HW_RANDOM
 118         help
 119           This driver provides kernel-side support for the Random Number
 120           Generator hardware found on the AMD Geode LX.
 121
 122           To compile this driver as a module, choose M here: the
 123           module will be called geode-rng.
 124
 125           If unsure, say Y.
 126
 127 config HW_RANDOM_N2RNG
 128         tristate "Niagara2 Random Number Generator support"
 129         depends on SPARC64
 130         default HW_RANDOM
 131         help
 132           This driver provides kernel-side support for the Random Number
 133           Generator hardware found on Niagara2 cpus.
 134
 135           To compile this driver as a module, choose M here: the
 136           module will be called n2-rng.
 137
 138           If unsure, say Y.
 139
 140 config HW_RANDOM_VIA
 141         tristate "VIA HW Random Number Generator support"
 142         depends on X86
 143         default HW_RANDOM
 144         help
 145           This driver provides kernel-side support for the Random Number
 146           Generator hardware found on VIA based motherboards.
 147
 148           To compile this driver as a module, choose M here: the
 149           module will be called via-rng.
 150
 151           If unsure, say Y.
 152
 153 config HW_RANDOM_IXP4XX
 154         tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support"
 155         depends on ARCH_IXP4XX
 156         default HW_RANDOM
 157         help
 158           This driver provides kernel-side support for the Pseudo-Random
 159           Number Generator hardware found on the Intel IXP45x/46x NPU.
 160
 161           To compile this driver as a module, choose M here: the
 162           module will be called ixp4xx-rng.
 163
 164           If unsure, say Y.
 165
 166 config HW_RANDOM_OMAP
 167         tristate "OMAP Random Number Generator support"
 168         depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || ARCH_MVEBU
 169         default HW_RANDOM
 170         help
 171           This driver provides kernel-side support for the Random Number
 172           Generator hardware found on OMAP16xx, OMAP2/3/4/5, AM33xx/AM43xx
 173           multimedia processors, and Marvell Armada 7k/8k SoCs.
 174
 175           To compile this driver as a module, choose M here: the
 176           module will be called omap-rng.
 177
 178           If unsure, say Y.
 179
 180 config HW_RANDOM_OMAP3_ROM
 181         tristate "OMAP3 ROM Random Number Generator support"
 182         depends on ARCH_OMAP3
 183         default HW_RANDOM
 184         help
 185           This driver provides kernel-side support for the Random Number
 186           Generator hardware found on OMAP34xx processors.
 187
 188           To compile this driver as a module, choose M here: the
 189           module will be called omap3-rom-rng.
 190
 191           If unsure, say Y.
 192
 193 config HW_RANDOM_OCTEON
 194         tristate "Octeon Random Number Generator support"
 195         depends on CAVIUM_OCTEON_SOC
 196         default HW_RANDOM
 197         help
 198           This driver provides kernel-side support for the Random Number
 199           Generator hardware found on Octeon processors.
 200
 201           To compile this driver as a module, choose M here: the
 202           module will be called octeon-rng.
 203
 204           If unsure, say Y.
 205
 206 config HW_RANDOM_PASEMI
 207         tristate "PA Semi HW Random Number Generator support"
 208         depends on PPC_PASEMI
 209         default HW_RANDOM
 210         help
 211           This driver provides kernel-side support for the Random Number
 212           Generator hardware found on PA Semi PWRficient SoCs.
 213
 214           To compile this driver as a module, choose M here: the
 215           module will be called pasemi-rng.
 216
 217           If unsure, say Y.
 218
 219 config HW_RANDOM_VIRTIO
 220         tristate "VirtIO Random Number Generator support"
 221         depends on VIRTIO
 222         help
 223           This driver provides kernel-side support for the virtual Random Number
 224           Generator hardware.
 225
 226           To compile this driver as a module, choose M here: the
 227           module will be called virtio-rng.  If unsure, say N.
 228
 229 config HW_RANDOM_TX4939
 230         tristate "TX4939 Random Number Generator support"
 231         depends on SOC_TX4939
 232         default HW_RANDOM
 233         help
 234           This driver provides kernel-side support for the Random Number
 235           Generator hardware found on TX4939 SoC.
 236
 237           To compile this driver as a module, choose M here: the
 238           module will be called tx4939-rng.
 239
 240           If unsure, say Y.
 241
 242 config HW_RANDOM_MXC_RNGA
 243         tristate "Freescale i.MX RNGA Random Number Generator"
 244         depends on SOC_IMX31
 245         default HW_RANDOM
 246         help
 247           This driver provides kernel-side support for the Random Number
 248           Generator hardware found on Freescale i.MX processors.
 249
 250           To compile this driver as a module, choose M here: the
 251           module will be called mxc-rnga.
 252
 253           If unsure, say Y.
 254
 255 config HW_RANDOM_IMX_RNGC
 256         tristate "Freescale i.MX RNGC Random Number Generator"
 257         depends on HAS_IOMEM && HAVE_CLK
 258         depends on SOC_IMX25 || SOC_IMX6SL || SOC_IMX6SLL || SOC_IMX6UL || COMPILE_TEST
 259         default HW_RANDOM
 260         help
 261           This driver provides kernel-side support for the Random Number
 262           Generator Version C hardware found on some Freescale i.MX
 263           processors. Version B is also supported by this driver.
 264
 265           To compile this driver as a module, choose M here: the
 266           module will be called imx-rngc.
 267
 268           If unsure, say Y.
 269
 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
 299 config HW_RANDOM_NOMADIK
 300         tristate "ST-Ericsson Nomadik Random Number Generator support"
 301         depends on ARCH_NOMADIK
 302         default HW_RANDOM
 303         help
 304           This driver provides kernel-side support for the Random Number
 305           Generator hardware found on ST-Ericsson SoCs (8815 and 8500).
 306
 307           To compile this driver as a module, choose M here: the
 308           module will be called nomadik-rng.
 309
 310           If unsure, say Y.
 311
 312 config HW_RANDOM_PSERIES
 313         tristate "pSeries HW Random Number Generator support"
 314         depends on PPC64 && IBMVIO
 315         default HW_RANDOM
 316         help
 317           This driver provides kernel-side support for the Random Number
 318           Generator hardware found on POWER7+ machines and above
 319
 320           To compile this driver as a module, choose M here: the
 321           module will be called pseries-rng.
 322
 323           If unsure, say Y.
 324
 325 config HW_RANDOM_POWERNV
 326         tristate "PowerNV Random Number Generator support"
 327         depends on PPC_POWERNV
 328         default HW_RANDOM
 329         help
 330           This is the driver for Random Number Generator hardware found
 331           in POWER7+ and above machines for PowerNV platform.
 332
 333           To compile this driver as a module, choose M here: the
 334           module will be called powernv-rng.
 335
 336           If unsure, say Y.
 337
 338 config HW_RANDOM_HISI
 339         tristate "Hisilicon Random Number Generator support"
 340         depends on HW_RANDOM && ARCH_HISI
 341         default HW_RANDOM
 342         help
 343           This driver provides kernel-side support for the Random Number
 344           Generator hardware found on Hisilicon Hip04 and Hip05 SoC.
 345
 346           To compile this driver as a module, choose M here: the
 347           module will be called hisi-rng.
 348
 349           If unsure, say Y.
 350
 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
 364 config HW_RANDOM_ST
 365         tristate "ST Microelectronics HW Random Number Generator support"
 366         depends on HW_RANDOM && ARCH_STI
 367         help
 368           This driver provides kernel-side support for the Random Number
 369           Generator hardware found on STi series of SoCs.
 370
 371           To compile this driver as a module, choose M here: the
 372           module will be called st-rng.
 373
 374 config HW_RANDOM_XGENE
 375         tristate "APM X-Gene True Random Number Generator (TRNG) support"
 376         depends on HW_RANDOM && ARCH_XGENE
 377         default HW_RANDOM
 378         help
 379           This driver provides kernel-side support for the Random Number
 380           Generator hardware found on APM X-Gene SoC.
 381
 382           To compile this driver as a module, choose M here: the
 383           module will be called xgene_rng.
 384
 385           If unsure, say Y.
 386
 387 config HW_RANDOM_STM32
 388         tristate "STMicroelectronics STM32 random number generator"
 389         depends on HW_RANDOM && (ARCH_STM32 || COMPILE_TEST)
 390         depends on HAS_IOMEM
 391         default HW_RANDOM
 392         help
 393           This driver provides kernel-side support for the Random Number
 394           Generator hardware found on STM32 microcontrollers.
 395
 396           To compile this driver as a module, choose M here: the
 397           module will be called stm32-rng.
 398
 399           If unsure, say N.
 400
 401 config HW_RANDOM_PIC32
 402         tristate "Microchip PIC32 Random Number Generator support"
 403         depends on HW_RANDOM && MACH_PIC32
 404         default y
 405         help
 406           This driver provides kernel-side support for the Random Number
 407           Generator hardware found on a PIC32.
 408
 409           To compile this driver as a module, choose M here. the
 410           module will be called pic32-rng.
 411
 412           If unsure, say Y.
 413
 414 config HW_RANDOM_MESON
 415         tristate "Amlogic Meson Random Number Generator support"
 416         depends on HW_RANDOM
 417         depends on ARCH_MESON || COMPILE_TEST
 418         default y
 419         help
 420           This driver provides kernel-side support for the Random Number
 421           Generator hardware found on Amlogic Meson SoCs.
 422
 423           To compile this driver as a module, choose M here. the
 424           module will be called meson-rng.
 425
 426           If unsure, say Y.
 427
 428 config HW_RANDOM_CAVIUM
 429         tristate "Cavium ThunderX Random Number Generator support"
 430         depends on HW_RANDOM && PCI && (ARM64 || (COMPILE_TEST && 64BIT))
 431         default HW_RANDOM
 432         help
 433           This driver provides kernel-side support for the Random Number
 434           Generator hardware found on Cavium SoCs.
 435
 436           To compile this driver as a module, choose M here: the
 437           module will be called cavium_rng.
 438
 439           If unsure, say Y.
 440
 441 config HW_RANDOM_MTK
 442         tristate "Mediatek Random Number Generator support"
 443         depends on HW_RANDOM
 444         depends on ARCH_MEDIATEK || COMPILE_TEST
 445         default y
 446         help
 447           This driver provides kernel-side support for the Random Number
 448           Generator hardware found on Mediatek SoCs.
 449
 450           To compile this driver as a module, choose M here. the
 451           module will be called mtk-rng.
 452
 453           If unsure, say Y.
 454
 455 config HW_RANDOM_S390
 456         tristate "S390 True Random Number Generator support"
 457         depends on S390
 458         default HW_RANDOM
 459         help
 460           This driver provides kernel-side support for the True
 461           Random Number Generator available as CPACF extension
 462           on modern s390 hardware platforms.
 463
 464           To compile this driver as a module, choose M here: the
 465           module will be called s390-trng.
 466
 467           If unsure, say Y.
 468
 469 config HW_RANDOM_EXYNOS
 470         tristate "Samsung Exynos True Random Number Generator support"
 471         depends on ARCH_EXYNOS || COMPILE_TEST
 472         default HW_RANDOM
 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
 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.
 538
 539 endif # HW_RANDOM
 540
 541 config UML_RANDOM
 542         depends on UML
 543         tristate "Hardware random number generator"
 544         help
 545           This option enables UML's "hardware" random number generator.  It
 546           attaches itself to the host's /dev/random, supplying as much entropy
 547           as the host has, rather than the small amount the UML gets from its
 548           own drivers.  It registers itself as a standard hardware random number
 549           generator, major 10, minor 183, and the canonical device name is
 550           /dev/hwrng.
 551           The way to make use of this is to install the rng-tools package
 552           (check your distro, or download from
 553           http://sourceforge.net/projects/gkernel/).  rngd periodically reads
 554           /dev/hwrng and injects the entropy into /dev/random.