drivers/char/hw_random/Kconfig

   1 #
   2 # Hardware Random Number Generator (RNG) configuration
   3 #
   4
   5 config 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
  23 config 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
  37 config 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
  50 config 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
  63 config 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
  76 config 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
  90 config 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
 103 config 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
 116 config 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
 129 config HW_RANDOM_IXP4XX
 130         tristate "Intel IXP4xx NPU HW 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 Random
 135           Number Generator hardware found on the Intel IXP4xx 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
 142 config 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
 156 config 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
 169 config 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
 182 config 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
 192 config 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
 205 config 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
 217 config HW_RANDOM_NOMADIK
 218         tristate "ST-Ericsson Nomadik Random Number Generator support"
 219         depends on HW_RANDOM && PLAT_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
 229 config 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
 241 config 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
 253 config 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
 268 config 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
 281 config 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
 293 config 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.