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 || 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 if ARCH_THUNDER 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 576config HW_RANDOM_ROCKCHIP 577 tristate "Rockchip True Random Number Generator" 578 depends on HW_RANDOM && (ARCH_ROCKCHIP || COMPILE_TEST) 579 depends on HAS_IOMEM 580 default HW_RANDOM 581 help 582 This driver provides kernel-side support for the True Random Number 583 Generator hardware found on some Rockchip SoC like RK3566 or RK3568. 584 585 To compile this driver as a module, choose M here: the 586 module will be called rockchip-rng. 587 588 If unsure, say Y. 589 590endif # HW_RANDOM 591 592config UML_RANDOM 593 depends on UML 594 select HW_RANDOM 595 tristate "UML Random Number Generator support" 596 help 597 This option enables UML's "hardware" random number generator. It 598 attaches itself to the host's /dev/random, supplying as much entropy 599 as the host has, rather than the small amount the UML gets from its 600 own drivers. It registers itself as a rng-core driver thus providing 601 a device which is usually called /dev/hwrng. This hardware random 602 number generator does feed into the kernel's random number generator 603 entropy pool. 604 605 If unsure, say Y. 606