1# 2# Hardware Random Number Generator (RNG) configuration 3# 4 5menuconfig HW_RANDOM 6 tristate "Hardware Random Number Generator Core support" 7 default m 8 ---help--- 9 Hardware Random Number Generator Core infrastructure. 10 11 To compile this driver as a module, choose M here: the 12 module will be called rng-core. This provides a device 13 that's usually called /dev/hw_random, and which exposes one 14 of possibly several hardware random number generators. 15 16 These hardware random number generators do not feed directly 17 into the kernel's random number generator. That is usually 18 handled by the "rngd" daemon. Documentation/hw_random.txt 19 has more information. 20 21 If unsure, say Y. 22 23if HW_RANDOM 24 25config HW_RANDOM_TIMERIOMEM 26 tristate "Timer IOMEM HW Random Number Generator support" 27 depends on HAS_IOMEM 28 ---help--- 29 This driver provides kernel-side support for a generic Random 30 Number Generator used by reading a 'dumb' iomem address that 31 is to be read no faster than, for example, once a second; 32 the default FPGA bitstream on the TS-7800 has such functionality. 33 34 To compile this driver as a module, choose M here: the 35 module will be called timeriomem-rng. 36 37 If unsure, say Y. 38 39config HW_RANDOM_INTEL 40 tristate "Intel HW Random Number Generator support" 41 depends on (X86 || IA64) && PCI 42 default HW_RANDOM 43 ---help--- 44 This driver provides kernel-side support for the Random Number 45 Generator hardware found on Intel i8xx-based motherboards. 46 47 To compile this driver as a module, choose M here: the 48 module will be called intel-rng. 49 50 If unsure, say Y. 51 52config HW_RANDOM_AMD 53 tristate "AMD HW Random Number Generator support" 54 depends on (X86 || PPC_MAPLE) && PCI 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 && HAVE_CLK && OF 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_BCM63XX 79 tristate "Broadcom BCM63xx Random Number Generator support" 80 depends on BCM63XX 81 default HW_RANDOM 82 ---help--- 83 This driver provides kernel-side support for the Random Number 84 Generator hardware found on the Broadcom BCM63xx SoCs. 85 86 To compile this driver as a module, choose M here: the 87 module will be called bcm63xx-rng 88 89 If unusure, say Y. 90 91config HW_RANDOM_BCM2835 92 tristate "Broadcom BCM2835 Random Number Generator support" 93 depends on ARCH_BCM2835 94 default HW_RANDOM 95 ---help--- 96 This driver provides kernel-side support for the Random Number 97 Generator hardware found on the Broadcom BCM2835 SoCs. 98 99 To compile this driver as a module, choose M here: the 100 module will be called bcm2835-rng 101 102 If unsure, say Y. 103 104config HW_RANDOM_IPROC_RNG200 105 tristate "Broadcom iProc RNG200 support" 106 depends on ARCH_BCM_IPROC 107 default HW_RANDOM 108 ---help--- 109 This driver provides kernel-side support for the RNG200 110 hardware found on the Broadcom iProc SoCs. 111 112 To compile this driver as a module, choose M here: the 113 module will be called iproc-rng200 114 115 If unsure, say Y. 116 117config HW_RANDOM_GEODE 118 tristate "AMD Geode HW Random Number Generator support" 119 depends on X86_32 && PCI 120 default HW_RANDOM 121 ---help--- 122 This driver provides kernel-side support for the Random Number 123 Generator hardware found on the AMD Geode LX. 124 125 To compile this driver as a module, choose M here: the 126 module will be called geode-rng. 127 128 If unsure, say Y. 129 130config HW_RANDOM_N2RNG 131 tristate "Niagara2 Random Number Generator support" 132 depends on SPARC64 133 default HW_RANDOM 134 ---help--- 135 This driver provides kernel-side support for the Random Number 136 Generator hardware found on Niagara2 cpus. 137 138 To compile this driver as a module, choose M here: the 139 module will be called n2-rng. 140 141 If unsure, say Y. 142 143config HW_RANDOM_VIA 144 tristate "VIA HW Random Number Generator support" 145 depends on X86 146 default HW_RANDOM 147 ---help--- 148 This driver provides kernel-side support for the Random Number 149 Generator hardware found on VIA based motherboards. 150 151 To compile this driver as a module, choose M here: the 152 module will be called via-rng. 153 154 If unsure, say Y. 155 156config HW_RANDOM_IXP4XX 157 tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support" 158 depends on ARCH_IXP4XX 159 default HW_RANDOM 160 ---help--- 161 This driver provides kernel-side support for the Pseudo-Random 162 Number Generator hardware found on the Intel IXP45x/46x NPU. 163 164 To compile this driver as a module, choose M here: the 165 module will be called ixp4xx-rng. 166 167 If unsure, say Y. 168 169config HW_RANDOM_OMAP 170 tristate "OMAP Random Number Generator support" 171 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS 172 default HW_RANDOM 173 ---help--- 174 This driver provides kernel-side support for the Random Number 175 Generator hardware found on OMAP16xx, OMAP2/3/4/5 and AM33xx/AM43xx 176 multimedia processors. 177 178 To compile this driver as a module, choose M here: the 179 module will be called omap-rng. 180 181 If unsure, say Y. 182 183config HW_RANDOM_OMAP3_ROM 184 tristate "OMAP3 ROM Random Number Generator support" 185 depends on ARCH_OMAP3 186 default HW_RANDOM 187 ---help--- 188 This driver provides kernel-side support for the Random Number 189 Generator hardware found on OMAP34xx processors. 190 191 To compile this driver as a module, choose M here: the 192 module will be called omap3-rom-rng. 193 194 If unsure, say Y. 195 196config HW_RANDOM_OCTEON 197 tristate "Octeon Random Number Generator support" 198 depends on CAVIUM_OCTEON_SOC 199 default HW_RANDOM 200 ---help--- 201 This driver provides kernel-side support for the Random Number 202 Generator hardware found on Octeon processors. 203 204 To compile this driver as a module, choose M here: the 205 module will be called octeon-rng. 206 207 If unsure, say Y. 208 209config HW_RANDOM_PASEMI 210 tristate "PA Semi HW Random Number Generator support" 211 depends on PPC_PASEMI 212 default HW_RANDOM 213 ---help--- 214 This driver provides kernel-side support for the Random Number 215 Generator hardware found on PA Semi PWRficient SoCs. 216 217 To compile this driver as a module, choose M here: the 218 module will be called pasemi-rng. 219 220 If unsure, say Y. 221 222config HW_RANDOM_VIRTIO 223 tristate "VirtIO Random Number Generator support" 224 depends on VIRTIO 225 ---help--- 226 This driver provides kernel-side support for the virtual Random Number 227 Generator hardware. 228 229 To compile this driver as a module, choose M here: the 230 module will be called virtio-rng. If unsure, say N. 231 232config HW_RANDOM_TX4939 233 tristate "TX4939 Random Number Generator support" 234 depends on SOC_TX4939 235 default HW_RANDOM 236 ---help--- 237 This driver provides kernel-side support for the Random Number 238 Generator hardware found on TX4939 SoC. 239 240 To compile this driver as a module, choose M here: the 241 module will be called tx4939-rng. 242 243 If unsure, say Y. 244 245config HW_RANDOM_MXC_RNGA 246 tristate "Freescale i.MX RNGA Random Number Generator" 247 depends on ARCH_HAS_RNGA 248 default HW_RANDOM 249 ---help--- 250 This driver provides kernel-side support for the Random Number 251 Generator hardware found on Freescale i.MX processors. 252 253 To compile this driver as a module, choose M here: the 254 module will be called mxc-rnga. 255 256 If unsure, say Y. 257 258config HW_RANDOM_NOMADIK 259 tristate "ST-Ericsson Nomadik Random Number Generator support" 260 depends on ARCH_NOMADIK 261 default HW_RANDOM 262 ---help--- 263 This driver provides kernel-side support for the Random Number 264 Generator hardware found on ST-Ericsson SoCs (8815 and 8500). 265 266 To compile this driver as a module, choose M here: the 267 module will be called nomadik-rng. 268 269 If unsure, say Y. 270 271config HW_RANDOM_PPC4XX 272 tristate "PowerPC 4xx generic true random number generator support" 273 depends on PPC && 4xx 274 default HW_RANDOM 275 ---help--- 276 This driver provides the kernel-side support for the TRNG hardware 277 found in the security function of some PowerPC 4xx SoCs. 278 279 To compile this driver as a module, choose M here: the 280 module will be called ppc4xx-rng. 281 282 If unsure, say N. 283 284config HW_RANDOM_PSERIES 285 tristate "pSeries HW Random Number Generator support" 286 depends on PPC64 && IBMVIO 287 default HW_RANDOM 288 ---help--- 289 This driver provides kernel-side support for the Random Number 290 Generator hardware found on POWER7+ machines and above 291 292 To compile this driver as a module, choose M here: the 293 module will be called pseries-rng. 294 295 If unsure, say Y. 296 297config HW_RANDOM_POWERNV 298 tristate "PowerNV Random Number Generator support" 299 depends on PPC_POWERNV 300 default HW_RANDOM 301 ---help--- 302 This is the driver for Random Number Generator hardware found 303 in POWER7+ and above machines for PowerNV platform. 304 305 To compile this driver as a module, choose M here: the 306 module will be called powernv-rng. 307 308 If unsure, say Y. 309 310config HW_RANDOM_EXYNOS 311 tristate "EXYNOS HW random number generator support" 312 depends on ARCH_EXYNOS 313 default HW_RANDOM 314 ---help--- 315 This driver provides kernel-side support for the Random Number 316 Generator hardware found on EXYNOS SOCs. 317 318 To compile this driver as a module, choose M here: the 319 module will be called exynos-rng. 320 321 If unsure, say Y. 322 323config HW_RANDOM_TPM 324 tristate "TPM HW Random Number Generator support" 325 depends on TCG_TPM 326 default HW_RANDOM 327 ---help--- 328 This driver provides kernel-side support for the Random Number 329 Generator in the Trusted Platform Module 330 331 To compile this driver as a module, choose M here: the 332 module will be called tpm-rng. 333 334 If unsure, say Y. 335 336config HW_RANDOM_MSM 337 tristate "Qualcomm SoCs Random Number Generator support" 338 depends on HW_RANDOM && ARCH_QCOM 339 default HW_RANDOM 340 ---help--- 341 This driver provides kernel-side support for the Random Number 342 Generator hardware found on Qualcomm SoCs. 343 344 To compile this driver as a module, choose M here. the 345 module will be called msm-rng. 346 347 If unsure, say Y. 348 349config HW_RANDOM_XGENE 350 tristate "APM X-Gene True Random Number Generator (TRNG) support" 351 depends on HW_RANDOM && ARCH_XGENE 352 default HW_RANDOM 353 ---help--- 354 This driver provides kernel-side support for the Random Number 355 Generator hardware found on APM X-Gene SoC. 356 357 To compile this driver as a module, choose M here: the 358 module will be called xgene_rng. 359 360 If unsure, say Y. 361 362endif # HW_RANDOM 363 364config UML_RANDOM 365 depends on UML 366 tristate "Hardware random number generator" 367 help 368 This option enables UML's "hardware" random number generator. It 369 attaches itself to the host's /dev/random, supplying as much entropy 370 as the host has, rather than the small amount the UML gets from its 371 own drivers. It registers itself as a standard hardware random number 372 generator, major 10, minor 183, and the canonical device name is 373 /dev/hwrng. 374 The way to make use of this is to install the rng-tools package 375 (check your distro, or download from 376 http://sourceforge.net/projects/gkernel/). rngd periodically reads 377 /dev/hwrng and injects the entropy into /dev/random. 378