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 || COMPILE_TEST) && 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 || COMPILE_TEST 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 || COMPILE_TEST 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 || COMPILE_TEST 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 || COMPILE_TEST 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_MXC_RNGA 230 tristate "Freescale i.MX RNGA Random Number Generator" 231 depends on SOC_IMX31 232 default HW_RANDOM 233 help 234 This driver provides kernel-side support for the Random Number 235 Generator hardware found on Freescale i.MX processors. 236 237 To compile this driver as a module, choose M here: the 238 module will be called mxc-rnga. 239 240 If unsure, say Y. 241 242config HW_RANDOM_IMX_RNGC 243 tristate "Freescale i.MX RNGC Random Number Generator" 244 depends on HAS_IOMEM && HAVE_CLK 245 depends on SOC_IMX25 || SOC_IMX6SL || SOC_IMX6SLL || SOC_IMX6UL || COMPILE_TEST 246 default HW_RANDOM 247 help 248 This driver provides kernel-side support for the Random Number 249 Generator Version C hardware found on some Freescale i.MX 250 processors. Version B is also supported by this driver. 251 252 To compile this driver as a module, choose M here: the 253 module will be called imx-rngc. 254 255 If unsure, say Y. 256 257config HW_RANDOM_INGENIC_RNG 258 tristate "Ingenic Random Number Generator support" 259 depends on HW_RANDOM 260 depends on MACH_JZ4780 || MACH_X1000 261 default HW_RANDOM 262 help 263 This driver provides kernel-side support for the Random Number Generator 264 hardware found in ingenic JZ4780 and X1000 SoC. MIPS Creator CI20 uses 265 JZ4780 SoC, YSH & ATIL CU1000-Neo uses X1000 SoC. 266 267 To compile this driver as a module, choose M here: the 268 module will be called ingenic-rng. 269 270 If unsure, say Y. 271 272config HW_RANDOM_INGENIC_TRNG 273 tristate "Ingenic True Random Number Generator support" 274 depends on HW_RANDOM 275 depends on MACH_X1830 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 HW_RANDOM && ARCH_HISI 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_ST 339 tristate "ST Microelectronics HW Random Number Generator support" 340 depends on HW_RANDOM && ARCH_STI 341 help 342 This driver provides kernel-side support for the Random Number 343 Generator hardware found on STi series of SoCs. 344 345 To compile this driver as a module, choose M here: the 346 module will be called st-rng. 347 348config HW_RANDOM_XGENE 349 tristate "APM X-Gene True Random Number Generator (TRNG) support" 350 depends on HW_RANDOM && ARCH_XGENE 351 default HW_RANDOM 352 help 353 This driver provides kernel-side support for the Random Number 354 Generator hardware found on APM X-Gene SoC. 355 356 To compile this driver as a module, choose M here: the 357 module will be called xgene_rng. 358 359 If unsure, say Y. 360 361config HW_RANDOM_STM32 362 tristate "STMicroelectronics STM32 random number generator" 363 depends on HW_RANDOM && (ARCH_STM32 || COMPILE_TEST) 364 depends on HAS_IOMEM 365 default HW_RANDOM 366 help 367 This driver provides kernel-side support for the Random Number 368 Generator hardware found on STM32 microcontrollers. 369 370 To compile this driver as a module, choose M here: the 371 module will be called stm32-rng. 372 373 If unsure, say N. 374 375config HW_RANDOM_PIC32 376 tristate "Microchip PIC32 Random Number Generator support" 377 depends on HW_RANDOM && MACH_PIC32 378 default y 379 help 380 This driver provides kernel-side support for the Random Number 381 Generator hardware found on a PIC32. 382 383 To compile this driver as a module, choose M here. the 384 module will be called pic32-rng. 385 386 If unsure, say Y. 387 388config HW_RANDOM_MESON 389 tristate "Amlogic Meson Random Number Generator support" 390 depends on HW_RANDOM 391 depends on ARCH_MESON || COMPILE_TEST 392 default y 393 help 394 This driver provides kernel-side support for the Random Number 395 Generator hardware found on Amlogic Meson SoCs. 396 397 To compile this driver as a module, choose M here. the 398 module will be called meson-rng. 399 400 If unsure, say Y. 401 402config HW_RANDOM_CAVIUM 403 tristate "Cavium ThunderX Random Number Generator support" 404 depends on HW_RANDOM && PCI && ARCH_THUNDER 405 default HW_RANDOM 406 help 407 This driver provides kernel-side support for the Random Number 408 Generator hardware found on Cavium SoCs. 409 410 To compile this driver as a module, choose M here: the 411 module will be called cavium_rng. 412 413 If unsure, say Y. 414 415config HW_RANDOM_MTK 416 tristate "Mediatek Random Number Generator support" 417 depends on HW_RANDOM 418 depends on ARCH_MEDIATEK || COMPILE_TEST 419 default y 420 help 421 This driver provides kernel-side support for the Random Number 422 Generator hardware found on Mediatek SoCs. 423 424 To compile this driver as a module, choose M here. the 425 module will be called mtk-rng. 426 427 If unsure, say Y. 428 429config HW_RANDOM_S390 430 tristate "S390 True Random Number Generator support" 431 depends on S390 432 default HW_RANDOM 433 help 434 This driver provides kernel-side support for the True 435 Random Number Generator available as CPACF extension 436 on modern s390 hardware platforms. 437 438 To compile this driver as a module, choose M here: the 439 module will be called s390-trng. 440 441 If unsure, say Y. 442 443config HW_RANDOM_EXYNOS 444 tristate "Samsung Exynos True Random Number Generator support" 445 depends on ARCH_EXYNOS || COMPILE_TEST 446 default HW_RANDOM 447 help 448 This driver provides support for the True Random Number 449 Generator available in Exynos SoCs. 450 451 To compile this driver as a module, choose M here: the module 452 will be called exynos-trng. 453 454 If unsure, say Y. 455 456config HW_RANDOM_OPTEE 457 tristate "OP-TEE based Random Number Generator support" 458 depends on OPTEE 459 default HW_RANDOM 460 help 461 This driver provides support for OP-TEE based Random Number 462 Generator on ARM SoCs where hardware entropy sources are not 463 accessible to normal world (Linux). 464 465 To compile this driver as a module, choose M here: the module 466 will be called optee-rng. 467 468 If unsure, say Y. 469 470config HW_RANDOM_NPCM 471 tristate "NPCM Random Number Generator support" 472 depends on ARCH_NPCM || COMPILE_TEST 473 default HW_RANDOM 474 help 475 This driver provides support for the Random Number 476 Generator hardware available in Nuvoton NPCM SoCs. 477 478 To compile this driver as a module, choose M here: the 479 module will be called npcm-rng. 480 481 If unsure, say Y. 482 483config HW_RANDOM_KEYSTONE 484 depends on ARCH_KEYSTONE || COMPILE_TEST 485 depends on HAS_IOMEM && OF 486 default HW_RANDOM 487 tristate "TI Keystone NETCP SA Hardware random number generator" 488 help 489 This option enables Keystone's hardware random generator. 490 491config HW_RANDOM_CCTRNG 492 tristate "Arm CryptoCell True Random Number Generator support" 493 depends on HAS_IOMEM && OF 494 help 495 Say 'Y' to enable the True Random Number Generator driver for the 496 Arm TrustZone CryptoCell family of processors. 497 Currently the CryptoCell 713 and 703 are supported. 498 The driver is supported only in SoC where Trusted Execution 499 Environment is not used. 500 Choose 'M' to compile this driver as a module. The module 501 will be called cctrng. 502 If unsure, say 'N'. 503 504config HW_RANDOM_XIPHERA 505 tristate "Xiphera FPGA based True Random Number Generator support" 506 depends on HAS_IOMEM 507 help 508 This driver provides kernel-side support for Xiphera True Random 509 Number Generator Intellectual Property Core. 510 511 To compile this driver as a module, choose M here: the 512 module will be called xiphera-trng. 513 514config HW_RANDOM_ARM_SMCCC_TRNG 515 tristate "Arm SMCCC TRNG firmware interface support" 516 depends on HAVE_ARM_SMCCC_DISCOVERY 517 default HW_RANDOM 518 help 519 Say 'Y' to enable the True Random Number Generator driver using 520 the Arm SMCCC TRNG firmware interface. This reads entropy from 521 higher exception levels (firmware, hypervisor). Uses SMCCC for 522 communicating with the firmware: 523 https://developer.arm.com/documentation/den0098/latest/ 524 525 To compile this driver as a module, choose M here: the 526 module will be called arm_smccc_trng. 527 528config HW_RANDOM_CN10K 529 tristate "Marvell CN10K Random Number Generator support" 530 depends on HW_RANDOM && PCI && ARM64 531 default HW_RANDOM 532 help 533 This driver provides support for the True Random Number 534 generator available in Marvell CN10K SoCs. 535 536 To compile this driver as a module, choose M here. 537 The module will be called cn10k_rng. If unsure, say Y. 538 539endif # HW_RANDOM 540 541config UML_RANDOM 542 depends on UML 543 select HW_RANDOM 544 tristate "UML Random Number Generator support" 545 help 546 This option enables UML's "hardware" random number generator. It 547 attaches itself to the host's /dev/random, supplying as much entropy 548 as the host has, rather than the small amount the UML gets from its 549 own drivers. It registers itself as a rng-core driver thus providing 550 a device which is usually called /dev/hwrng. This hardware random 551 number generator does feed into the kernel's random number generator 552 entropy pool. 553 554 If unsure, say Y. 555