1# 2# Hardware Random Number Generator (RNG) configuration 3# 4 5config 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 23config HW_RANDOM_TIMERIOMEM 24 tristate "Timer IOMEM HW Random Number Generator support" 25 depends on HW_RANDOM && HAS_IOMEM 26 ---help--- 27 This driver provides kernel-side support for a generic Random 28 Number Generator used by reading a 'dumb' iomem address that 29 is to be read no faster than, for example, once a second; 30 the default FPGA bitstream on the TS-7800 has such functionality. 31 32 To compile this driver as a module, choose M here: the 33 module will be called timeriomem-rng. 34 35 If unsure, say Y. 36 37config HW_RANDOM_INTEL 38 tristate "Intel HW Random Number Generator support" 39 depends on HW_RANDOM && (X86 || IA64) && PCI 40 default HW_RANDOM 41 ---help--- 42 This driver provides kernel-side support for the Random Number 43 Generator hardware found on Intel i8xx-based motherboards. 44 45 To compile this driver as a module, choose M here: the 46 module will be called intel-rng. 47 48 If unsure, say Y. 49 50config HW_RANDOM_AMD 51 tristate "AMD HW Random Number Generator support" 52 depends on HW_RANDOM && (X86 || PPC_MAPLE) && PCI 53 default HW_RANDOM 54 ---help--- 55 This driver provides kernel-side support for the Random Number 56 Generator hardware found on AMD 76x-based motherboards. 57 58 To compile this driver as a module, choose M here: the 59 module will be called amd-rng. 60 61 If unsure, say Y. 62 63config HW_RANDOM_ATMEL 64 tristate "Atmel Random Number Generator support" 65 depends on HW_RANDOM && HAVE_CLK 66 default (HW_RANDOM && ARCH_AT91) 67 ---help--- 68 This driver provides kernel-side support for the Random Number 69 Generator hardware found on Atmel AT91 devices. 70 71 To compile this driver as a module, choose M here: the 72 module will be called atmel-rng. 73 74 If unsure, say Y. 75 76config HW_RANDOM_BCM63XX 77 tristate "Broadcom BCM63xx Random Number Generator support" 78 depends on HW_RANDOM && BCM63XX 79 default HW_RANDOM 80 ---help--- 81 This driver provides kernel-side support for the Random Number 82 Generator hardware found on the Broadcom BCM63xx SoCs. 83 84 To compile this driver as a module, choose M here: the 85 module will be called bcm63xx-rng 86 87 If unusure, say Y. 88 89config HW_RANDOM_BCM2835 90 tristate "Broadcom BCM2835 Random Number Generator support" 91 depends on HW_RANDOM && ARCH_BCM2835 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 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_GEODE 103 tristate "AMD Geode HW Random Number Generator support" 104 depends on HW_RANDOM && X86_32 && PCI 105 default HW_RANDOM 106 ---help--- 107 This driver provides kernel-side support for the Random Number 108 Generator hardware found on the AMD Geode LX. 109 110 To compile this driver as a module, choose M here: the 111 module will be called geode-rng. 112 113 If unsure, say Y. 114 115config HW_RANDOM_N2RNG 116 tristate "Niagara2 Random Number Generator support" 117 depends on HW_RANDOM && SPARC64 118 default HW_RANDOM 119 ---help--- 120 This driver provides kernel-side support for the Random Number 121 Generator hardware found on Niagara2 cpus. 122 123 To compile this driver as a module, choose M here: the 124 module will be called n2-rng. 125 126 If unsure, say Y. 127 128config HW_RANDOM_VIA 129 tristate "VIA HW Random Number Generator support" 130 depends on HW_RANDOM && X86 131 default HW_RANDOM 132 ---help--- 133 This driver provides kernel-side support for the Random Number 134 Generator hardware found on VIA based motherboards. 135 136 To compile this driver as a module, choose M here: the 137 module will be called via-rng. 138 139 If unsure, say Y. 140 141config HW_RANDOM_IXP4XX 142 tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support" 143 depends on HW_RANDOM && ARCH_IXP4XX 144 default HW_RANDOM 145 ---help--- 146 This driver provides kernel-side support for the Pseudo-Random 147 Number Generator hardware found on the Intel IXP45x/46x NPU. 148 149 To compile this driver as a module, choose M here: the 150 module will be called ixp4xx-rng. 151 152 If unsure, say Y. 153 154config HW_RANDOM_OMAP 155 tristate "OMAP Random Number Generator support" 156 depends on HW_RANDOM && (ARCH_OMAP16XX || ARCH_OMAP2PLUS) 157 default HW_RANDOM 158 ---help--- 159 This driver provides kernel-side support for the Random Number 160 Generator hardware found on OMAP16xx, OMAP2/3/4/5 and AM33xx/AM43xx 161 multimedia processors. 162 163 To compile this driver as a module, choose M here: the 164 module will be called omap-rng. 165 166 If unsure, say Y. 167 168config HW_RANDOM_OMAP3_ROM 169 tristate "OMAP3 ROM Random Number Generator support" 170 depends on HW_RANDOM && ARCH_OMAP3 171 default HW_RANDOM 172 ---help--- 173 This driver provides kernel-side support for the Random Number 174 Generator hardware found on OMAP34xx processors. 175 176 To compile this driver as a module, choose M here: the 177 module will be called omap3-rom-rng. 178 179 If unsure, say Y. 180 181config HW_RANDOM_OCTEON 182 tristate "Octeon Random Number Generator support" 183 depends on HW_RANDOM && CAVIUM_OCTEON_SOC 184 default HW_RANDOM 185 ---help--- 186 This driver provides kernel-side support for the Random Number 187 Generator hardware found on Octeon processors. 188 189 To compile this driver as a module, choose M here: the 190 module will be called octeon-rng. 191 192 If unsure, say Y. 193 194config HW_RANDOM_PASEMI 195 tristate "PA Semi HW Random Number Generator support" 196 depends on HW_RANDOM && PPC_PASEMI 197 default HW_RANDOM 198 ---help--- 199 This driver provides kernel-side support for the Random Number 200 Generator hardware found on PA Semi PWRficient SoCs. 201 202 To compile this driver as a module, choose M here: the 203 module will be called pasemi-rng. 204 205 If unsure, say Y. 206 207config HW_RANDOM_VIRTIO 208 tristate "VirtIO Random Number Generator support" 209 depends on HW_RANDOM && VIRTIO 210 ---help--- 211 This driver provides kernel-side support for the virtual Random Number 212 Generator hardware. 213 214 To compile this driver as a module, choose M here: the 215 module will be called virtio-rng. If unsure, say N. 216 217config HW_RANDOM_TX4939 218 tristate "TX4939 Random Number Generator support" 219 depends on HW_RANDOM && SOC_TX4939 220 default HW_RANDOM 221 ---help--- 222 This driver provides kernel-side support for the Random Number 223 Generator hardware found on TX4939 SoC. 224 225 To compile this driver as a module, choose M here: the 226 module will be called tx4939-rng. 227 228 If unsure, say Y. 229 230config HW_RANDOM_MXC_RNGA 231 tristate "Freescale i.MX RNGA Random Number Generator" 232 depends on HW_RANDOM && ARCH_HAS_RNGA 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_NOMADIK 243 tristate "ST-Ericsson Nomadik Random Number Generator support" 244 depends on HW_RANDOM && ARCH_NOMADIK 245 ---help--- 246 This driver provides kernel-side support for the Random Number 247 Generator hardware found on ST-Ericsson SoCs (8815 and 8500). 248 249 To compile this driver as a module, choose M here: the 250 module will be called nomadik-rng. 251 252 If unsure, say Y. 253 254config HW_RANDOM_PICOXCELL 255 tristate "Picochip picoXcell true random number generator support" 256 depends on HW_RANDOM && ARCH_PICOXCELL && PICOXCELL_PC3X3 257 ---help--- 258 This driver provides kernel-side support for the Random Number 259 Generator hardware found on Picochip PC3x3 and later devices. 260 261 To compile this driver as a module, choose M here: the 262 module will be called picoxcell-rng. 263 264 If unsure, say Y. 265 266config HW_RANDOM_PPC4XX 267 tristate "PowerPC 4xx generic true random number generator support" 268 depends on HW_RANDOM && PPC && 4xx 269 ---help--- 270 This driver provides the kernel-side support for the TRNG hardware 271 found in the security function of some PowerPC 4xx SoCs. 272 273 To compile this driver as a module, choose M here: the 274 module will be called ppc4xx-rng. 275 276 If unsure, say N. 277 278config UML_RANDOM 279 depends on UML 280 tristate "Hardware random number generator" 281 help 282 This option enables UML's "hardware" random number generator. It 283 attaches itself to the host's /dev/random, supplying as much entropy 284 as the host has, rather than the small amount the UML gets from its 285 own drivers. It registers itself as a standard hardware random number 286 generator, major 10, minor 183, and the canonical device name is 287 /dev/hwrng. 288 The way to make use of this is to install the rng-tools package 289 (check your distro, or download from 290 http://sourceforge.net/projects/gkernel/). rngd periodically reads 291 /dev/hwrng and injects the entropy into /dev/random. 292 293config HW_RANDOM_PSERIES 294 tristate "pSeries HW Random Number Generator support" 295 depends on HW_RANDOM && PPC64 && IBMVIO 296 default HW_RANDOM 297 ---help--- 298 This driver provides kernel-side support for the Random Number 299 Generator hardware found on POWER7+ machines and above 300 301 To compile this driver as a module, choose M here: the 302 module will be called pseries-rng. 303 304 If unsure, say Y. 305 306config HW_RANDOM_POWERNV 307 tristate "PowerNV Random Number Generator support" 308 depends on HW_RANDOM && PPC_POWERNV 309 default HW_RANDOM 310 ---help--- 311 This is the driver for Random Number Generator hardware found 312 in POWER7+ and above machines for PowerNV platform. 313 314 To compile this driver as a module, choose M here: the 315 module will be called powernv-rng. 316 317 If unsure, say Y. 318 319config HW_RANDOM_EXYNOS 320 tristate "EXYNOS HW random number generator support" 321 depends on HW_RANDOM && HAS_IOMEM && HAVE_CLK 322 ---help--- 323 This driver provides kernel-side support for the Random Number 324 Generator hardware found on EXYNOS SOCs. 325 326 To compile this driver as a module, choose M here: the 327 module will be called exynos-rng. 328 329 If unsure, say Y. 330 331config HW_RANDOM_TPM 332 tristate "TPM HW Random Number Generator support" 333 depends on HW_RANDOM && TCG_TPM 334 default HW_RANDOM 335 ---help--- 336 This driver provides kernel-side support for the Random Number 337 Generator in the Trusted Platform Module 338 339 To compile this driver as a module, choose M here: the 340 module will be called tpm-rng. 341 342 If unsure, say Y. 343 344config HW_RANDOM_MSM 345 tristate "Qualcomm SoCs Random Number Generator support" 346 depends on HW_RANDOM && ARCH_QCOM 347 ---help--- 348 This driver provides kernel-side support for the Random Number 349 Generator hardware found on Qualcomm SoCs. 350 351 To compile this driver as a module, choose M here. the 352 module will be called msm-rng. 353 354 If unsure, say Y. 355