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 89 90config HW_RANDOM_GEODE 91 tristate "AMD Geode HW Random Number Generator support" 92 depends on HW_RANDOM && X86_32 && PCI 93 default HW_RANDOM 94 ---help--- 95 This driver provides kernel-side support for the Random Number 96 Generator hardware found on the AMD Geode LX. 97 98 To compile this driver as a module, choose M here: the 99 module will be called geode-rng. 100 101 If unsure, say Y. 102 103config HW_RANDOM_N2RNG 104 tristate "Niagara2 Random Number Generator support" 105 depends on HW_RANDOM && SPARC64 106 default HW_RANDOM 107 ---help--- 108 This driver provides kernel-side support for the Random Number 109 Generator hardware found on Niagara2 cpus. 110 111 To compile this driver as a module, choose M here: the 112 module will be called n2-rng. 113 114 If unsure, say Y. 115 116config HW_RANDOM_VIA 117 tristate "VIA HW Random Number Generator support" 118 depends on HW_RANDOM && X86 119 default HW_RANDOM 120 ---help--- 121 This driver provides kernel-side support for the Random Number 122 Generator hardware found on VIA based motherboards. 123 124 To compile this driver as a module, choose M here: the 125 module will be called via-rng. 126 127 If unsure, say Y. 128 129config HW_RANDOM_IXP4XX 130 tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support" 131 depends on HW_RANDOM && ARCH_IXP4XX 132 default HW_RANDOM 133 ---help--- 134 This driver provides kernel-side support for the Pseudo-Random 135 Number Generator hardware found on the Intel IXP45x/46x NPU. 136 137 To compile this driver as a module, choose M here: the 138 module will be called ixp4xx-rng. 139 140 If unsure, say Y. 141 142config HW_RANDOM_OMAP 143 tristate "OMAP Random Number Generator support" 144 depends on HW_RANDOM && (ARCH_OMAP16XX || ARCH_OMAP2) 145 default HW_RANDOM 146 ---help--- 147 This driver provides kernel-side support for the Random Number 148 Generator hardware found on OMAP16xx and OMAP24xx multimedia 149 processors. 150 151 To compile this driver as a module, choose M here: the 152 module will be called omap-rng. 153 154 If unsure, say Y. 155 156config HW_RANDOM_OCTEON 157 tristate "Octeon Random Number Generator support" 158 depends on HW_RANDOM && CPU_CAVIUM_OCTEON 159 default HW_RANDOM 160 ---help--- 161 This driver provides kernel-side support for the Random Number 162 Generator hardware found on Octeon processors. 163 164 To compile this driver as a module, choose M here: the 165 module will be called octeon-rng. 166 167 If unsure, say Y. 168 169config HW_RANDOM_PASEMI 170 tristate "PA Semi HW Random Number Generator support" 171 depends on HW_RANDOM && PPC_PASEMI 172 default HW_RANDOM 173 ---help--- 174 This driver provides kernel-side support for the Random Number 175 Generator hardware found on PA Semi PWRficient SoCs. 176 177 To compile this driver as a module, choose M here: the 178 module will be called pasemi-rng. 179 180 If unsure, say Y. 181 182config HW_RANDOM_VIRTIO 183 tristate "VirtIO Random Number Generator support" 184 depends on HW_RANDOM && VIRTIO 185 ---help--- 186 This driver provides kernel-side support for the virtual Random Number 187 Generator hardware. 188 189 To compile this driver as a module, choose M here: the 190 module will be called virtio-rng. If unsure, say N. 191 192config HW_RANDOM_TX4939 193 tristate "TX4939 Random Number Generator support" 194 depends on HW_RANDOM && SOC_TX4939 195 default HW_RANDOM 196 ---help--- 197 This driver provides kernel-side support for the Random Number 198 Generator hardware found on TX4939 SoC. 199 200 To compile this driver as a module, choose M here: the 201 module will be called tx4939-rng. 202 203 If unsure, say Y. 204 205config HW_RANDOM_MXC_RNGA 206 tristate "Freescale i.MX RNGA Random Number Generator" 207 depends on HW_RANDOM && ARCH_HAS_RNGA 208 ---help--- 209 This driver provides kernel-side support for the Random Number 210 Generator hardware found on Freescale i.MX processors. 211 212 To compile this driver as a module, choose M here: the 213 module will be called mxc-rnga. 214 215 If unsure, say Y. 216 217config HW_RANDOM_NOMADIK 218 tristate "ST-Ericsson Nomadik Random Number Generator support" 219 depends on HW_RANDOM && ARCH_NOMADIK 220 ---help--- 221 This driver provides kernel-side support for the Random Number 222 Generator hardware found on ST-Ericsson SoCs (8815 and 8500). 223 224 To compile this driver as a module, choose M here: the 225 module will be called nomadik-rng. 226 227 If unsure, say Y. 228 229config HW_RANDOM_PICOXCELL 230 tristate "Picochip picoXcell true random number generator support" 231 depends on HW_RANDOM && ARCH_PICOXCELL && PICOXCELL_PC3X3 232 ---help--- 233 This driver provides kernel-side support for the Random Number 234 Generator hardware found on Picochip PC3x3 and later devices. 235 236 To compile this driver as a module, choose M here: the 237 module will be called picoxcell-rng. 238 239 If unsure, say Y. 240 241config HW_RANDOM_PPC4XX 242 tristate "PowerPC 4xx generic true random number generator support" 243 depends on HW_RANDOM && PPC && 4xx 244 ---help--- 245 This driver provides the kernel-side support for the TRNG hardware 246 found in the security function of some PowerPC 4xx SoCs. 247 248 To compile this driver as a module, choose M here: the 249 module will be called ppc4xx-rng. 250 251 If unsure, say N. 252 253config UML_RANDOM 254 depends on UML 255 tristate "Hardware random number generator" 256 help 257 This option enables UML's "hardware" random number generator. It 258 attaches itself to the host's /dev/random, supplying as much entropy 259 as the host has, rather than the small amount the UML gets from its 260 own drivers. It registers itself as a standard hardware random number 261 generator, major 10, minor 183, and the canonical device name is 262 /dev/hwrng. 263 The way to make use of this is to install the rng-tools package 264 (check your distro, or download from 265 http://sourceforge.net/projects/gkernel/). rngd periodically reads 266 /dev/hwrng and injects the entropy into /dev/random. 267 268config HW_RANDOM_PSERIES 269 tristate "pSeries HW Random Number Generator support" 270 depends on HW_RANDOM && PPC64 && IBMVIO 271 default HW_RANDOM 272 ---help--- 273 This driver provides kernel-side support for the Random Number 274 Generator hardware found on POWER7+ machines and above 275 276 To compile this driver as a module, choose M here: the 277 module will be called pseries-rng. 278 279 If unsure, say Y. 280 281config HW_RANDOM_EXYNOS 282 tristate "EXYNOS HW random number generator support" 283 depends on HW_RANDOM && HAS_IOMEM && HAVE_CLK 284 ---help--- 285 This driver provides kernel-side support for the Random Number 286 Generator hardware found on EXYNOS SOCs. 287 288 To compile this driver as a module, choose M here: the 289 module will be called exynos-rng. 290 291 If unsure, say Y. 292 293config HW_RANDOM_TPM 294 tristate "TPM HW Random Number Generator support" 295 depends on HW_RANDOM && TCG_TPM 296 default HW_RANDOM 297 ---help--- 298 This driver provides kernel-side support for the Random Number 299 Generator in the Trusted Platform Module 300 301 To compile this driver as a module, choose M here: the 302 module will be called tpm-rng. 303 304 If unsure, say Y. 305