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) && 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) && 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 64config 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 77config 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 87config 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 101config 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 114config 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 127config 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 140config 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 153config HW_RANDOM_IXP4XX 154 tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support" 155 depends on ARCH_IXP4XX || COMPILE_TEST 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 166config HW_RANDOM_OMAP 167 tristate "OMAP Random Number Generator support" 168 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || ARCH_MVEBU || ARCH_K3 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 180config 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 193config 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 206config 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 219config 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 229config 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 242config 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 255config 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 270config 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 285config 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 299config 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 312config 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 325config 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 338config 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 351config HW_RANDOM_ST 352 tristate "ST Microelectronics HW Random Number Generator support" 353 depends on HW_RANDOM && ARCH_STI 354 help 355 This driver provides kernel-side support for the Random Number 356 Generator hardware found on STi series of SoCs. 357 358 To compile this driver as a module, choose M here: the 359 module will be called st-rng. 360 361config HW_RANDOM_XGENE 362 tristate "APM X-Gene True Random Number Generator (TRNG) support" 363 depends on HW_RANDOM && ARCH_XGENE 364 default HW_RANDOM 365 help 366 This driver provides kernel-side support for the Random Number 367 Generator hardware found on APM X-Gene SoC. 368 369 To compile this driver as a module, choose M here: the 370 module will be called xgene_rng. 371 372 If unsure, say Y. 373 374config HW_RANDOM_STM32 375 tristate "STMicroelectronics STM32 random number generator" 376 depends on HW_RANDOM && (ARCH_STM32 || COMPILE_TEST) 377 depends on HAS_IOMEM 378 default HW_RANDOM 379 help 380 This driver provides kernel-side support for the Random Number 381 Generator hardware found on STM32 microcontrollers. 382 383 To compile this driver as a module, choose M here: the 384 module will be called stm32-rng. 385 386 If unsure, say N. 387 388config HW_RANDOM_PIC32 389 tristate "Microchip PIC32 Random Number Generator support" 390 depends on HW_RANDOM && MACH_PIC32 391 default y 392 help 393 This driver provides kernel-side support for the Random Number 394 Generator hardware found on a PIC32. 395 396 To compile this driver as a module, choose M here. the 397 module will be called pic32-rng. 398 399 If unsure, say Y. 400 401config HW_RANDOM_MESON 402 tristate "Amlogic Meson Random Number Generator support" 403 depends on HW_RANDOM 404 depends on ARCH_MESON || COMPILE_TEST 405 default y 406 help 407 This driver provides kernel-side support for the Random Number 408 Generator hardware found on Amlogic Meson SoCs. 409 410 To compile this driver as a module, choose M here. the 411 module will be called meson-rng. 412 413 If unsure, say Y. 414 415config HW_RANDOM_CAVIUM 416 tristate "Cavium ThunderX Random Number Generator support" 417 depends on HW_RANDOM && PCI && (ARM64 || (COMPILE_TEST && 64BIT)) 418 default HW_RANDOM 419 help 420 This driver provides kernel-side support for the Random Number 421 Generator hardware found on Cavium SoCs. 422 423 To compile this driver as a module, choose M here: the 424 module will be called cavium_rng. 425 426 If unsure, say Y. 427 428config HW_RANDOM_MTK 429 tristate "Mediatek Random Number Generator support" 430 depends on HW_RANDOM 431 depends on ARCH_MEDIATEK || COMPILE_TEST 432 default y 433 help 434 This driver provides kernel-side support for the Random Number 435 Generator hardware found on Mediatek SoCs. 436 437 To compile this driver as a module, choose M here. the 438 module will be called mtk-rng. 439 440 If unsure, say Y. 441 442config HW_RANDOM_S390 443 tristate "S390 True Random Number Generator support" 444 depends on S390 445 default HW_RANDOM 446 help 447 This driver provides kernel-side support for the True 448 Random Number Generator available as CPACF extension 449 on modern s390 hardware platforms. 450 451 To compile this driver as a module, choose M here: the 452 module will be called s390-trng. 453 454 If unsure, say Y. 455 456config HW_RANDOM_EXYNOS 457 tristate "Samsung Exynos True Random Number Generator support" 458 depends on ARCH_EXYNOS || COMPILE_TEST 459 default HW_RANDOM 460 help 461 This driver provides support for the True Random Number 462 Generator available in Exynos SoCs. 463 464 To compile this driver as a module, choose M here: the module 465 will be called exynos-trng. 466 467 If unsure, say Y. 468 469config HW_RANDOM_OPTEE 470 tristate "OP-TEE based Random Number Generator support" 471 depends on OPTEE 472 default HW_RANDOM 473 help 474 This driver provides support for OP-TEE based Random Number 475 Generator on ARM SoCs where hardware entropy sources are not 476 accessible to normal world (Linux). 477 478 To compile this driver as a module, choose M here: the module 479 will be called optee-rng. 480 481 If unsure, say Y. 482 483config HW_RANDOM_NPCM 484 tristate "NPCM Random Number Generator support" 485 depends on ARCH_NPCM || COMPILE_TEST 486 default HW_RANDOM 487 help 488 This driver provides support for the Random Number 489 Generator hardware available in Nuvoton NPCM SoCs. 490 491 To compile this driver as a module, choose M here: the 492 module will be called npcm-rng. 493 494 If unsure, say Y. 495 496config HW_RANDOM_KEYSTONE 497 depends on ARCH_KEYSTONE || COMPILE_TEST 498 depends on HAS_IOMEM && OF 499 default HW_RANDOM 500 tristate "TI Keystone NETCP SA Hardware random number generator" 501 help 502 This option enables Keystone's hardware random generator. 503 504config HW_RANDOM_CCTRNG 505 tristate "Arm CryptoCell True Random Number Generator support" 506 depends on HAS_IOMEM && OF 507 help 508 Say 'Y' to enable the True Random Number Generator driver for the 509 Arm TrustZone CryptoCell family of processors. 510 Currently the CryptoCell 713 and 703 are supported. 511 The driver is supported only in SoC where Trusted Execution 512 Environment is not used. 513 Choose 'M' to compile this driver as a module. The module 514 will be called cctrng. 515 If unsure, say 'N'. 516 517config HW_RANDOM_XIPHERA 518 tristate "Xiphera FPGA based True Random Number Generator support" 519 depends on HAS_IOMEM 520 help 521 This driver provides kernel-side support for Xiphera True Random 522 Number Generator Intellectual Property Core. 523 524 To compile this driver as a module, choose M here: the 525 module will be called xiphera-trng. 526 527config HW_RANDOM_ARM_SMCCC_TRNG 528 tristate "Arm SMCCC TRNG firmware interface support" 529 depends on HAVE_ARM_SMCCC_DISCOVERY 530 default HW_RANDOM 531 help 532 Say 'Y' to enable the True Random Number Generator driver using 533 the Arm SMCCC TRNG firmware interface. This reads entropy from 534 higher exception levels (firmware, hypervisor). Uses SMCCC for 535 communicating with the firmware: 536 https://developer.arm.com/documentation/den0098/latest/ 537 538 To compile this driver as a module, choose M here: the 539 module will be called arm_smccc_trng. 540 541endif # HW_RANDOM 542 543config UML_RANDOM 544 depends on UML 545 select HW_RANDOM 546 tristate "UML Random Number Generator support" 547 help 548 This option enables UML's "hardware" random number generator. It 549 attaches itself to the host's /dev/random, supplying as much entropy 550 as the host has, rather than the small amount the UML gets from its 551 own drivers. It registers itself as a rng-core driver thus providing 552 a device which is usually called /dev/hwrng. This hardware random 553 number generator does feed into the kernel's random number generator 554 entropy pool. 555 556 If unsure, say Y. 557