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 || 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_AIROHA 66 tristate "Airoha True HW Random Number Generator support" 67 depends on ARCH_AIROHA || COMPILE_TEST 68 default HW_RANDOM 69 help 70 This driver provides kernel-side support for the True Random Number 71 Generator hardware found on Airoha SoC. 72 73 To compile this driver as a module, choose M here: the 74 module will be called airoha-rng. 75 76 If unsure, say Y. 77 78config HW_RANDOM_ATMEL 79 tristate "Atmel Random Number Generator support" 80 depends on (ARCH_AT91 || COMPILE_TEST) 81 default HW_RANDOM 82 help 83 This driver provides kernel-side support for the Random Number 84 Generator hardware found on Atmel AT91 devices. 85 86 To compile this driver as a module, choose M here: the 87 module will be called atmel-rng. 88 89 If unsure, say Y. 90 91config HW_RANDOM_BA431 92 tristate "Silex Insight BA431 Random Number Generator support" 93 depends on HAS_IOMEM 94 help 95 This driver provides kernel-side support for the Random Number 96 Generator hardware based on Silex Insight BA431 IP. 97 98 To compile this driver as a module, choose M here: the 99 module will be called ba431-rng. 100 101config HW_RANDOM_BCM2835 102 tristate "Broadcom BCM2835/BCM63xx Random Number Generator support" 103 depends on ARCH_BCM2835 || ARCH_BCM_NSP || ARCH_BCM_5301X || \ 104 ARCH_BCMBCA || BCM63XX || BMIPS_GENERIC || COMPILE_TEST 105 default HW_RANDOM 106 help 107 This driver provides kernel-side support for the Random Number 108 Generator hardware found on the Broadcom BCM2835 and BCM63xx SoCs. 109 110 To compile this driver as a module, choose M here: the 111 module will be called bcm2835-rng 112 113 If unsure, say Y. 114 115config HW_RANDOM_BCM74110 116 tristate "Broadcom BCM74110 Random Number Generator support" 117 depends on ARCH_BRCMSTB || COMPILE_TEST 118 default HW_RANDOM 119 help 120 This driver provides kernel-side support for the Random Number 121 Generator hardware found on the Broadcom BCM74110 SoCs. 122 123 To compile this driver as a module, choose M here: the 124 module will be called bcm74110-rng 125 126 If unsure, say Y. 127 128config HW_RANDOM_IPROC_RNG200 129 tristate "Broadcom iProc/STB RNG200 support" 130 depends on ARCH_BCM_IPROC || ARCH_BCM2835 || ARCH_BCMBCA || ARCH_BRCMSTB || COMPILE_TEST 131 default HW_RANDOM 132 help 133 This driver provides kernel-side support for the RNG200 134 hardware found on the Broadcom iProc and STB SoCs. 135 136 To compile this driver as a module, choose M here: the 137 module will be called iproc-rng200 138 139 If unsure, say Y. 140 141config HW_RANDOM_GEODE 142 tristate "AMD Geode HW Random Number Generator support" 143 depends on (X86_32 || COMPILE_TEST) 144 depends on PCI 145 default HW_RANDOM 146 help 147 This driver provides kernel-side support for the Random Number 148 Generator hardware found on the AMD Geode LX. 149 150 To compile this driver as a module, choose M here: the 151 module will be called geode-rng. 152 153 If unsure, say Y. 154 155config HW_RANDOM_N2RNG 156 tristate "Niagara2 Random Number Generator support" 157 depends on SPARC64 158 default HW_RANDOM 159 help 160 This driver provides kernel-side support for the Random Number 161 Generator hardware found on Niagara2 cpus. 162 163 To compile this driver as a module, choose M here: the 164 module will be called n2-rng. 165 166 If unsure, say Y. 167 168config HW_RANDOM_VIA 169 tristate "VIA HW Random Number Generator support" 170 depends on X86 171 default HW_RANDOM 172 help 173 This driver provides kernel-side support for the Random Number 174 Generator hardware found on VIA based motherboards. 175 176 To compile this driver as a module, choose M here: the 177 module will be called via-rng. 178 179 If unsure, say Y. 180 181config HW_RANDOM_IXP4XX 182 tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support" 183 depends on ARCH_IXP4XX || COMPILE_TEST 184 default HW_RANDOM 185 help 186 This driver provides kernel-side support for the Pseudo-Random 187 Number Generator hardware found on the Intel IXP45x/46x NPU. 188 189 To compile this driver as a module, choose M here: the 190 module will be called ixp4xx-rng. 191 192 If unsure, say Y. 193 194config HW_RANDOM_OMAP 195 tristate "OMAP Random Number Generator support" 196 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || ARCH_MVEBU || ARCH_K3 || COMPILE_TEST 197 default HW_RANDOM 198 help 199 This driver provides kernel-side support for the Random Number 200 Generator hardware found on OMAP16xx, OMAP2/3/4/5, AM33xx/AM43xx 201 multimedia processors, and Marvell Armada 7k/8k SoCs. 202 203 To compile this driver as a module, choose M here: the 204 module will be called omap-rng. 205 206 If unsure, say Y. 207 208config HW_RANDOM_OMAP3_ROM 209 tristate "OMAP3 ROM Random Number Generator support" 210 depends on ARCH_OMAP3 || COMPILE_TEST 211 default HW_RANDOM 212 help 213 This driver provides kernel-side support for the Random Number 214 Generator hardware found on OMAP34xx processors. 215 216 To compile this driver as a module, choose M here: the 217 module will be called omap3-rom-rng. 218 219 If unsure, say Y. 220 221config HW_RANDOM_OCTEON 222 tristate "Octeon Random Number Generator support" 223 depends on CAVIUM_OCTEON_SOC 224 default HW_RANDOM 225 help 226 This driver provides kernel-side support for the Random Number 227 Generator hardware found on Octeon processors. 228 229 To compile this driver as a module, choose M here: the 230 module will be called octeon-rng. 231 232 If unsure, say Y. 233 234config HW_RANDOM_PASEMI 235 tristate "PA Semi HW Random Number Generator support" 236 depends on PPC_PASEMI || (PPC && COMPILE_TEST) 237 default HW_RANDOM 238 help 239 This driver provides kernel-side support for the Random Number 240 Generator hardware found on PA Semi PWRficient SoCs. 241 242 To compile this driver as a module, choose M here: the 243 module will be called pasemi-rng. 244 245 If unsure, say Y. 246 247config HW_RANDOM_VIRTIO 248 tristate "VirtIO Random Number Generator support" 249 depends on VIRTIO 250 help 251 This driver provides kernel-side support for the virtual Random Number 252 Generator hardware. 253 254 To compile this driver as a module, choose M here: the 255 module will be called virtio-rng. If unsure, say N. 256 257config HW_RANDOM_MXC_RNGA 258 tristate "Freescale i.MX RNGA Random Number Generator" 259 depends on SOC_IMX31 || COMPILE_TEST 260 default HW_RANDOM 261 help 262 This driver provides kernel-side support for the Random Number 263 Generator hardware found on Freescale i.MX processors. 264 265 To compile this driver as a module, choose M here: the 266 module will be called mxc-rnga. 267 268 If unsure, say Y. 269 270config HW_RANDOM_IMX_RNGC 271 tristate "Freescale i.MX RNGC Random Number Generator" 272 depends on HAS_IOMEM 273 depends on SOC_IMX25 || SOC_IMX6SL || SOC_IMX6SLL || SOC_IMX6UL || COMPILE_TEST 274 default HW_RANDOM 275 help 276 This driver provides kernel-side support for the Random Number 277 Generator Version C hardware found on some Freescale i.MX 278 processors. Version B is also supported by this driver. 279 280 To compile this driver as a module, choose M here: the 281 module will be called imx-rngc. 282 283 If unsure, say Y. 284 285config HW_RANDOM_INGENIC_RNG 286 tristate "Ingenic Random Number Generator support" 287 depends on MACH_JZ4780 || MACH_X1000 || COMPILE_TEST 288 default HW_RANDOM 289 help 290 This driver provides kernel-side support for the Random Number Generator 291 hardware found in ingenic JZ4780 and X1000 SoC. MIPS Creator CI20 uses 292 JZ4780 SoC, YSH & ATIL CU1000-Neo uses X1000 SoC. 293 294 To compile this driver as a module, choose M here: the 295 module will be called ingenic-rng. 296 297 If unsure, say Y. 298 299config HW_RANDOM_INGENIC_TRNG 300 tristate "Ingenic True Random Number Generator support" 301 depends on MACH_X1830 || COMPILE_TEST 302 default HW_RANDOM 303 help 304 This driver provides kernel-side support for the True Random Number Generator 305 hardware found in ingenic X1830 SoC. YSH & ATIL CU1830-Neo uses X1830 SoC. 306 307 To compile this driver as a module, choose M here: the 308 module will be called ingenic-trng. 309 310 If unsure, say Y. 311 312config HW_RANDOM_NOMADIK 313 tristate "ST-Ericsson Nomadik Random Number Generator support" 314 depends on ARCH_NOMADIK || COMPILE_TEST 315 default HW_RANDOM 316 help 317 This driver provides kernel-side support for the Random Number 318 Generator hardware found on ST-Ericsson SoCs (8815 and 8500). 319 320 To compile this driver as a module, choose M here: the 321 module will be called nomadik-rng. 322 323 If unsure, say Y. 324 325config HW_RANDOM_PSERIES 326 tristate "pSeries HW Random Number Generator support" 327 depends on PPC64 && IBMVIO 328 default HW_RANDOM 329 help 330 This driver provides kernel-side support for the Random Number 331 Generator hardware found on POWER7+ machines and above 332 333 To compile this driver as a module, choose M here: the 334 module will be called pseries-rng. 335 336 If unsure, say Y. 337 338config HW_RANDOM_POWERNV 339 tristate "PowerNV Random Number Generator support" 340 depends on PPC_POWERNV 341 default HW_RANDOM 342 help 343 This is the driver for Random Number Generator hardware found 344 in POWER7+ and above machines for PowerNV platform. 345 346 To compile this driver as a module, choose M here: the 347 module will be called powernv-rng. 348 349 If unsure, say Y. 350 351config HW_RANDOM_HISI 352 tristate "Hisilicon Random Number Generator support" 353 depends on ARCH_HISI || COMPILE_TEST 354 default HW_RANDOM 355 help 356 This driver provides kernel-side support for the Random Number 357 Generator hardware found on Hisilicon Hip04 and Hip05 SoC. 358 359 To compile this driver as a module, choose M here: the 360 module will be called hisi-rng. 361 362 If unsure, say Y. 363 364config HW_RANDOM_HISTB 365 tristate "Hisilicon STB Random Number Generator support" 366 depends on ARCH_HISI || COMPILE_TEST 367 default ARCH_HISI 368 help 369 This driver provides kernel-side support for the Random Number 370 Generator hardware found on Hisilicon Hi37xx SoC. 371 372 To compile this driver as a module, choose M here: the 373 module will be called histb-rng. 374 375config HW_RANDOM_ST 376 tristate "ST Microelectronics HW Random Number Generator support" 377 depends on ARCH_STI || COMPILE_TEST 378 help 379 This driver provides kernel-side support for the Random Number 380 Generator hardware found on STi series of SoCs. 381 382 To compile this driver as a module, choose M here: the 383 module will be called st-rng. 384 385config HW_RANDOM_XGENE 386 tristate "APM X-Gene True Random Number Generator (TRNG) support" 387 depends on ARCH_XGENE || COMPILE_TEST 388 default HW_RANDOM 389 help 390 This driver provides kernel-side support for the Random Number 391 Generator hardware found on APM X-Gene SoC. 392 393 To compile this driver as a module, choose M here: the 394 module will be called xgene_rng. 395 396 If unsure, say Y. 397 398config HW_RANDOM_STM32 399 tristate "STMicroelectronics STM32 random number generator" 400 depends on ARCH_STM32 || COMPILE_TEST 401 depends on HAS_IOMEM 402 default HW_RANDOM 403 help 404 This driver provides kernel-side support for the Random Number 405 Generator hardware found on STM32 microcontrollers. 406 407 To compile this driver as a module, choose M here: the 408 module will be called stm32-rng. 409 410 If unsure, say N. 411 412config HW_RANDOM_PIC32 413 tristate "Microchip PIC32 Random Number Generator support" 414 depends on MACH_PIC32 || COMPILE_TEST 415 default HW_RANDOM if MACH_PIC32 416 help 417 This driver provides kernel-side support for the Random Number 418 Generator hardware found on a PIC32. 419 420 To compile this driver as a module, choose M here. the 421 module will be called pic32-rng. 422 423 If unsure, say Y. 424 425config HW_RANDOM_POLARFIRE_SOC 426 tristate "Microchip PolarFire SoC Random Number Generator support" 427 depends on HW_RANDOM && POLARFIRE_SOC_SYS_CTRL 428 help 429 This driver provides kernel-side support for the Random Number 430 Generator hardware found on PolarFire SoC (MPFS). 431 432 To compile this driver as a module, choose M here. The 433 module will be called mfps_rng. 434 435 If unsure, say N. 436 437 438config HW_RANDOM_MESON 439 tristate "Amlogic Meson Random Number Generator support" 440 depends on ARCH_MESON || COMPILE_TEST 441 depends on HAS_IOMEM && OF 442 default HW_RANDOM if ARCH_MESON 443 help 444 This driver provides kernel-side support for the Random Number 445 Generator hardware found on Amlogic Meson SoCs. 446 447 To compile this driver as a module, choose M here. the 448 module will be called meson-rng. 449 450 If unsure, say Y. 451 452config HW_RANDOM_CAVIUM 453 tristate "Cavium ThunderX Random Number Generator support" 454 depends on PCI 455 depends on ARCH_THUNDER || (ARM64 && COMPILE_TEST) 456 default HW_RANDOM 457 help 458 This driver provides kernel-side support for the Random Number 459 Generator hardware found on Cavium SoCs. 460 461 To compile this driver as a module, choose M here: the 462 module will be called cavium_rng. 463 464 If unsure, say Y. 465 466config HW_RANDOM_MTK 467 tristate "Mediatek Random Number Generator support" 468 depends on ARCH_MEDIATEK || COMPILE_TEST 469 depends on HAS_IOMEM && OF 470 default HW_RANDOM if ARCH_MEDIATEK 471 help 472 This driver provides kernel-side support for the Random Number 473 Generator hardware found on Mediatek SoCs. 474 475 To compile this driver as a module, choose M here. the 476 module will be called mtk-rng. 477 478 If unsure, say Y. 479 480config HW_RANDOM_S390 481 tristate "S390 True Random Number Generator support" 482 depends on S390 483 default HW_RANDOM 484 help 485 This driver provides kernel-side support for the True 486 Random Number Generator available as CPACF extension 487 on modern s390 hardware platforms. 488 489 To compile this driver as a module, choose M here: the 490 module will be called s390-trng. 491 492 If unsure, say Y. 493 494config HW_RANDOM_EXYNOS 495 tristate "Samsung Exynos True Random Number Generator support" 496 depends on ARCH_EXYNOS || COMPILE_TEST 497 depends on HAS_IOMEM 498 default HW_RANDOM if ARCH_EXYNOS 499 help 500 This driver provides support for the True Random Number 501 Generator available in Exynos SoCs. 502 503 To compile this driver as a module, choose M here: the module 504 will be called exynos-trng. 505 506 If unsure, say Y. 507 508config HW_RANDOM_OPTEE 509 tristate "OP-TEE based Random Number Generator support" 510 depends on OPTEE 511 default HW_RANDOM 512 help 513 This driver provides support for OP-TEE based Random Number 514 Generator on ARM SoCs where hardware entropy sources are not 515 accessible to normal world (Linux). 516 517 To compile this driver as a module, choose M here: the module 518 will be called optee-rng. 519 520 If unsure, say Y. 521 522config HW_RANDOM_NPCM 523 tristate "NPCM Random Number Generator support" 524 depends on ARCH_NPCM || COMPILE_TEST 525 depends on HAS_IOMEM 526 default HW_RANDOM if ARCH_NPCM 527 help 528 This driver provides support for the Random Number 529 Generator hardware available in Nuvoton NPCM SoCs. 530 531 To compile this driver as a module, choose M here: the 532 module will be called npcm-rng. 533 534 If unsure, say Y. 535 536config HW_RANDOM_KEYSTONE 537 depends on ARCH_KEYSTONE || COMPILE_TEST 538 depends on HAS_IOMEM && OF 539 default HW_RANDOM 540 tristate "TI Keystone NETCP SA Hardware random number generator" 541 help 542 This option enables Keystone's hardware random generator. 543 544config HW_RANDOM_CCTRNG 545 tristate "Arm CryptoCell True Random Number Generator support" 546 depends on HAS_IOMEM && OF 547 help 548 Say 'Y' to enable the True Random Number Generator driver for the 549 Arm TrustZone CryptoCell family of processors. 550 Currently the CryptoCell 713 and 703 are supported. 551 The driver is supported only in SoC where Trusted Execution 552 Environment is not used. 553 Choose 'M' to compile this driver as a module. The module 554 will be called cctrng. 555 If unsure, say 'N'. 556 557config HW_RANDOM_XIPHERA 558 tristate "Xiphera FPGA based True Random Number Generator support" 559 depends on HAS_IOMEM 560 help 561 This driver provides kernel-side support for Xiphera True Random 562 Number Generator Intellectual Property Core. 563 564 To compile this driver as a module, choose M here: the 565 module will be called xiphera-trng. 566 567config HW_RANDOM_ARM_SMCCC_TRNG 568 tristate "Arm SMCCC TRNG firmware interface support" 569 depends on HAVE_ARM_SMCCC_DISCOVERY 570 default HW_RANDOM 571 help 572 Say 'Y' to enable the True Random Number Generator driver using 573 the Arm SMCCC TRNG firmware interface. This reads entropy from 574 higher exception levels (firmware, hypervisor). Uses SMCCC for 575 communicating with the firmware: 576 https://developer.arm.com/documentation/den0098/latest/ 577 578 To compile this driver as a module, choose M here: the 579 module will be called arm_smccc_trng. 580 581config HW_RANDOM_CN10K 582 tristate "Marvell CN10K Random Number Generator support" 583 depends on HW_RANDOM && PCI && (ARM64 || (64BIT && COMPILE_TEST)) 584 default HW_RANDOM if ARCH_THUNDER 585 help 586 This driver provides support for the True Random Number 587 generator available in Marvell CN10K SoCs. 588 589 To compile this driver as a module, choose M here. 590 The module will be called cn10k_rng. If unsure, say Y. 591 592config HW_RANDOM_JH7110 593 tristate "StarFive JH7110 Random Number Generator support" 594 depends on SOC_STARFIVE || COMPILE_TEST 595 help 596 This driver provides support for the True Random Number 597 Generator in StarFive JH7110 SoCs. 598 599 To compile this driver as a module, choose M here. 600 The module will be called jh7110-trng. 601 602config HW_RANDOM_ROCKCHIP 603 tristate "Rockchip True Random Number Generator" 604 depends on HW_RANDOM && (ARCH_ROCKCHIP || COMPILE_TEST) 605 depends on HAS_IOMEM 606 default HW_RANDOM 607 help 608 This driver provides kernel-side support for the True Random Number 609 Generator hardware found on some Rockchip SoC like RK3566 or RK3568. 610 611 To compile this driver as a module, choose M here: the 612 module will be called rockchip-rng. 613 614 If unsure, say Y. 615 616endif # HW_RANDOM 617 618config UML_RANDOM 619 depends on UML 620 select HW_RANDOM 621 tristate "UML Random Number Generator support" 622 help 623 This option enables UML's "hardware" random number generator. It 624 attaches itself to the host's /dev/random, supplying as much entropy 625 as the host has, rather than the small amount the UML gets from its 626 own drivers. It registers itself as a rng-core driver thus providing 627 a device which is usually called /dev/hwrng. This hardware random 628 number generator does feed into the kernel's random number generator 629 entropy pool. 630 631 If unsure, say Y. 632