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_OCTEON 169 tristate "Octeon Random Number Generator support" 170 depends on HW_RANDOM && CAVIUM_OCTEON_SOC 171 default HW_RANDOM 172 ---help--- 173 This driver provides kernel-side support for the Random Number 174 Generator hardware found on Octeon processors. 175 176 To compile this driver as a module, choose M here: the 177 module will be called octeon-rng. 178 179 If unsure, say Y. 180 181config HW_RANDOM_PASEMI 182 tristate "PA Semi HW Random Number Generator support" 183 depends on HW_RANDOM && PPC_PASEMI 184 default HW_RANDOM 185 ---help--- 186 This driver provides kernel-side support for the Random Number 187 Generator hardware found on PA Semi PWRficient SoCs. 188 189 To compile this driver as a module, choose M here: the 190 module will be called pasemi-rng. 191 192 If unsure, say Y. 193 194config HW_RANDOM_VIRTIO 195 tristate "VirtIO Random Number Generator support" 196 depends on HW_RANDOM && VIRTIO 197 ---help--- 198 This driver provides kernel-side support for the virtual Random Number 199 Generator hardware. 200 201 To compile this driver as a module, choose M here: the 202 module will be called virtio-rng. If unsure, say N. 203 204config HW_RANDOM_TX4939 205 tristate "TX4939 Random Number Generator support" 206 depends on HW_RANDOM && SOC_TX4939 207 default HW_RANDOM 208 ---help--- 209 This driver provides kernel-side support for the Random Number 210 Generator hardware found on TX4939 SoC. 211 212 To compile this driver as a module, choose M here: the 213 module will be called tx4939-rng. 214 215 If unsure, say Y. 216 217config HW_RANDOM_MXC_RNGA 218 tristate "Freescale i.MX RNGA Random Number Generator" 219 depends on HW_RANDOM && ARCH_HAS_RNGA 220 ---help--- 221 This driver provides kernel-side support for the Random Number 222 Generator hardware found on Freescale i.MX processors. 223 224 To compile this driver as a module, choose M here: the 225 module will be called mxc-rnga. 226 227 If unsure, say Y. 228 229config HW_RANDOM_NOMADIK 230 tristate "ST-Ericsson Nomadik Random Number Generator support" 231 depends on HW_RANDOM && ARCH_NOMADIK 232 ---help--- 233 This driver provides kernel-side support for the Random Number 234 Generator hardware found on ST-Ericsson SoCs (8815 and 8500). 235 236 To compile this driver as a module, choose M here: the 237 module will be called nomadik-rng. 238 239 If unsure, say Y. 240 241config HW_RANDOM_PICOXCELL 242 tristate "Picochip picoXcell true random number generator support" 243 depends on HW_RANDOM && ARCH_PICOXCELL && PICOXCELL_PC3X3 244 ---help--- 245 This driver provides kernel-side support for the Random Number 246 Generator hardware found on Picochip PC3x3 and later devices. 247 248 To compile this driver as a module, choose M here: the 249 module will be called picoxcell-rng. 250 251 If unsure, say Y. 252 253config HW_RANDOM_PPC4XX 254 tristate "PowerPC 4xx generic true random number generator support" 255 depends on HW_RANDOM && PPC && 4xx 256 ---help--- 257 This driver provides the kernel-side support for the TRNG hardware 258 found in the security function of some PowerPC 4xx SoCs. 259 260 To compile this driver as a module, choose M here: the 261 module will be called ppc4xx-rng. 262 263 If unsure, say N. 264 265config UML_RANDOM 266 depends on UML 267 tristate "Hardware random number generator" 268 help 269 This option enables UML's "hardware" random number generator. It 270 attaches itself to the host's /dev/random, supplying as much entropy 271 as the host has, rather than the small amount the UML gets from its 272 own drivers. It registers itself as a standard hardware random number 273 generator, major 10, minor 183, and the canonical device name is 274 /dev/hwrng. 275 The way to make use of this is to install the rng-tools package 276 (check your distro, or download from 277 http://sourceforge.net/projects/gkernel/). rngd periodically reads 278 /dev/hwrng and injects the entropy into /dev/random. 279 280config HW_RANDOM_PSERIES 281 tristate "pSeries HW Random Number Generator support" 282 depends on HW_RANDOM && PPC64 && IBMVIO 283 default HW_RANDOM 284 ---help--- 285 This driver provides kernel-side support for the Random Number 286 Generator hardware found on POWER7+ machines and above 287 288 To compile this driver as a module, choose M here: the 289 module will be called pseries-rng. 290 291 If unsure, say Y. 292 293config HW_RANDOM_EXYNOS 294 tristate "EXYNOS HW random number generator support" 295 depends on HW_RANDOM && HAS_IOMEM && HAVE_CLK 296 ---help--- 297 This driver provides kernel-side support for the Random Number 298 Generator hardware found on EXYNOS SOCs. 299 300 To compile this driver as a module, choose M here: the 301 module will be called exynos-rng. 302 303 If unsure, say Y. 304 305config HW_RANDOM_TPM 306 tristate "TPM HW Random Number Generator support" 307 depends on HW_RANDOM && TCG_TPM 308 default HW_RANDOM 309 ---help--- 310 This driver provides kernel-side support for the Random Number 311 Generator in the Trusted Platform Module 312 313 To compile this driver as a module, choose M here: the 314 module will be called tpm-rng. 315 316 If unsure, say Y. 317