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_BCMBCA || 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 MACH_X1830 || COMPILE_TEST 275 default HW_RANDOM 276 help 277 This driver provides kernel-side support for the True Random Number Generator 278 hardware found in ingenic X1830 SoC. YSH & ATIL CU1830-Neo uses X1830 SoC. 279 280 To compile this driver as a module, choose M here: the 281 module will be called ingenic-trng. 282 283 If unsure, say Y. 284 285config HW_RANDOM_NOMADIK 286 tristate "ST-Ericsson Nomadik Random Number Generator support" 287 depends on ARCH_NOMADIK || COMPILE_TEST 288 default HW_RANDOM 289 help 290 This driver provides kernel-side support for the Random Number 291 Generator hardware found on ST-Ericsson SoCs (8815 and 8500). 292 293 To compile this driver as a module, choose M here: the 294 module will be called nomadik-rng. 295 296 If unsure, say Y. 297 298config HW_RANDOM_PSERIES 299 tristate "pSeries HW Random Number Generator support" 300 depends on PPC64 && IBMVIO 301 default HW_RANDOM 302 help 303 This driver provides kernel-side support for the Random Number 304 Generator hardware found on POWER7+ machines and above 305 306 To compile this driver as a module, choose M here: the 307 module will be called pseries-rng. 308 309 If unsure, say Y. 310 311config HW_RANDOM_POWERNV 312 tristate "PowerNV Random Number Generator support" 313 depends on PPC_POWERNV 314 default HW_RANDOM 315 help 316 This is the driver for Random Number Generator hardware found 317 in POWER7+ and above machines for PowerNV platform. 318 319 To compile this driver as a module, choose M here: the 320 module will be called powernv-rng. 321 322 If unsure, say Y. 323 324config HW_RANDOM_HISI 325 tristate "Hisilicon Random Number Generator support" 326 depends on HW_RANDOM && ARCH_HISI 327 default HW_RANDOM 328 help 329 This driver provides kernel-side support for the Random Number 330 Generator hardware found on Hisilicon Hip04 and Hip05 SoC. 331 332 To compile this driver as a module, choose M here: the 333 module will be called hisi-rng. 334 335 If unsure, say Y. 336 337config HW_RANDOM_HISTB 338 tristate "Hisilicon STB Random Number Generator support" 339 depends on ARCH_HISI || COMPILE_TEST 340 default ARCH_HISI 341 help 342 This driver provides kernel-side support for the Random Number 343 Generator hardware found on Hisilicon Hi37xx SoC. 344 345 To compile this driver as a module, choose M here: the 346 module will be called histb-rng. 347 348config HW_RANDOM_ST 349 tristate "ST Microelectronics HW Random Number Generator support" 350 depends on HW_RANDOM && (ARCH_STI || COMPILE_TEST) 351 help 352 This driver provides kernel-side support for the Random Number 353 Generator hardware found on STi series of SoCs. 354 355 To compile this driver as a module, choose M here: the 356 module will be called st-rng. 357 358config HW_RANDOM_XGENE 359 tristate "APM X-Gene True Random Number Generator (TRNG) support" 360 depends on HW_RANDOM && ARCH_XGENE 361 default HW_RANDOM 362 help 363 This driver provides kernel-side support for the Random Number 364 Generator hardware found on APM X-Gene SoC. 365 366 To compile this driver as a module, choose M here: the 367 module will be called xgene_rng. 368 369 If unsure, say Y. 370 371config HW_RANDOM_STM32 372 tristate "STMicroelectronics STM32 random number generator" 373 depends on HW_RANDOM && (ARCH_STM32 || COMPILE_TEST) 374 depends on HAS_IOMEM 375 default HW_RANDOM 376 help 377 This driver provides kernel-side support for the Random Number 378 Generator hardware found on STM32 microcontrollers. 379 380 To compile this driver as a module, choose M here: the 381 module will be called stm32-rng. 382 383 If unsure, say N. 384 385config HW_RANDOM_PIC32 386 tristate "Microchip PIC32 Random Number Generator support" 387 depends on MACH_PIC32 || COMPILE_TEST 388 default y 389 help 390 This driver provides kernel-side support for the Random Number 391 Generator hardware found on a PIC32. 392 393 To compile this driver as a module, choose M here. the 394 module will be called pic32-rng. 395 396 If unsure, say Y. 397 398config HW_RANDOM_POLARFIRE_SOC 399 tristate "Microchip PolarFire SoC Random Number Generator support" 400 depends on HW_RANDOM && POLARFIRE_SOC_SYS_CTRL 401 help 402 This driver provides kernel-side support for the Random Number 403 Generator hardware found on PolarFire SoC (MPFS). 404 405 To compile this driver as a module, choose M here. The 406 module will be called mfps_rng. 407 408 If unsure, say N. 409 410 411config HW_RANDOM_MESON 412 tristate "Amlogic Meson Random Number Generator support" 413 depends on ARCH_MESON || COMPILE_TEST 414 depends on HAS_IOMEM && OF 415 default HW_RANDOM if ARCH_MESON 416 help 417 This driver provides kernel-side support for the Random Number 418 Generator hardware found on Amlogic Meson SoCs. 419 420 To compile this driver as a module, choose M here. the 421 module will be called meson-rng. 422 423 If unsure, say Y. 424 425config HW_RANDOM_CAVIUM 426 tristate "Cavium ThunderX Random Number Generator support" 427 depends on HW_RANDOM && PCI && ARCH_THUNDER 428 default HW_RANDOM 429 help 430 This driver provides kernel-side support for the Random Number 431 Generator hardware found on Cavium SoCs. 432 433 To compile this driver as a module, choose M here: the 434 module will be called cavium_rng. 435 436 If unsure, say Y. 437 438config HW_RANDOM_MTK 439 tristate "Mediatek Random Number Generator support" 440 depends on ARCH_MEDIATEK || COMPILE_TEST 441 depends on HAS_IOMEM && OF 442 default HW_RANDOM if ARCH_MEDIATEK 443 help 444 This driver provides kernel-side support for the Random Number 445 Generator hardware found on Mediatek SoCs. 446 447 To compile this driver as a module, choose M here. the 448 module will be called mtk-rng. 449 450 If unsure, say Y. 451 452config HW_RANDOM_S390 453 tristate "S390 True Random Number Generator support" 454 depends on S390 455 default HW_RANDOM 456 help 457 This driver provides kernel-side support for the True 458 Random Number Generator available as CPACF extension 459 on modern s390 hardware platforms. 460 461 To compile this driver as a module, choose M here: the 462 module will be called s390-trng. 463 464 If unsure, say Y. 465 466config HW_RANDOM_EXYNOS 467 tristate "Samsung Exynos True Random Number Generator support" 468 depends on ARCH_EXYNOS || COMPILE_TEST 469 depends on HAS_IOMEM 470 default HW_RANDOM if ARCH_EXYNOS 471 help 472 This driver provides support for the True Random Number 473 Generator available in Exynos SoCs. 474 475 To compile this driver as a module, choose M here: the module 476 will be called exynos-trng. 477 478 If unsure, say Y. 479 480config HW_RANDOM_OPTEE 481 tristate "OP-TEE based Random Number Generator support" 482 depends on OPTEE 483 default HW_RANDOM 484 help 485 This driver provides support for OP-TEE based Random Number 486 Generator on ARM SoCs where hardware entropy sources are not 487 accessible to normal world (Linux). 488 489 To compile this driver as a module, choose M here: the module 490 will be called optee-rng. 491 492 If unsure, say Y. 493 494config HW_RANDOM_NPCM 495 tristate "NPCM Random Number Generator support" 496 depends on ARCH_NPCM || COMPILE_TEST 497 depends on HAS_IOMEM 498 default HW_RANDOM if ARCH_NPCM 499 help 500 This driver provides support for the Random Number 501 Generator hardware available in Nuvoton NPCM SoCs. 502 503 To compile this driver as a module, choose M here: the 504 module will be called npcm-rng. 505 506 If unsure, say Y. 507 508config HW_RANDOM_KEYSTONE 509 depends on ARCH_KEYSTONE || COMPILE_TEST 510 depends on HAS_IOMEM && OF 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 516config 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 529config 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 539config HW_RANDOM_ARM_SMCCC_TRNG 540 tristate "Arm SMCCC TRNG firmware interface support" 541 depends on HAVE_ARM_SMCCC_DISCOVERY 542 default HW_RANDOM 543 help 544 Say 'Y' to enable the True Random Number Generator driver using 545 the Arm SMCCC TRNG firmware interface. This reads entropy from 546 higher exception levels (firmware, hypervisor). Uses SMCCC for 547 communicating with the firmware: 548 https://developer.arm.com/documentation/den0098/latest/ 549 550 To compile this driver as a module, choose M here: the 551 module will be called arm_smccc_trng. 552 553config HW_RANDOM_CN10K 554 tristate "Marvell CN10K Random Number Generator support" 555 depends on HW_RANDOM && PCI && (ARM64 || (64BIT && COMPILE_TEST)) 556 default HW_RANDOM 557 help 558 This driver provides support for the True Random Number 559 generator available in Marvell CN10K SoCs. 560 561 To compile this driver as a module, choose M here. 562 The module will be called cn10k_rng. If unsure, say Y. 563 564config HW_RANDOM_JH7110 565 tristate "StarFive JH7110 Random Number Generator support" 566 depends on SOC_STARFIVE || COMPILE_TEST 567 help 568 This driver provides support for the True Random Number 569 Generator in StarFive JH7110 SoCs. 570 571 To compile this driver as a module, choose M here. 572 The module will be called jh7110-trng. 573 574endif # HW_RANDOM 575 576config UML_RANDOM 577 depends on UML 578 select HW_RANDOM 579 tristate "UML Random Number Generator support" 580 help 581 This option enables UML's "hardware" random number generator. It 582 attaches itself to the host's /dev/random, supplying as much entropy 583 as the host has, rather than the small amount the UML gets from its 584 own drivers. It registers itself as a rng-core driver thus providing 585 a device which is usually called /dev/hwrng. This hardware random 586 number generator does feed into the kernel's random number generator 587 entropy pool. 588 589 If unsure, say Y. 590