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_GEODE
  77         tristate "AMD Geode HW Random Number Generator support"
  78         depends on HW_RANDOM && X86_32 && PCI
  79         default HW_RANDOM
  80         ---help---
  81           This driver provides kernel-side support for the Random Number
  82           Generator hardware found on the AMD Geode LX.
  83
  84           To compile this driver as a module, choose M here: the
  85           module will be called geode-rng.
  86
  87           If unsure, say Y.
  88
  89 config HW_RANDOM_N2RNG
  90         tristate "Niagara2 Random Number Generator support"
  91         depends on HW_RANDOM && SPARC64
  92         default HW_RANDOM
  93         ---help---
  94           This driver provides kernel-side support for the Random Number
  95           Generator hardware found on Niagara2 cpus.
  96
  97           To compile this driver as a module, choose M here: the
  98           module will be called n2-rng.
  99
 100           If unsure, say Y.
 101
 102 config HW_RANDOM_VIA
 103         tristate "VIA HW Random Number Generator support"
 104         depends on HW_RANDOM && X86
 105         default HW_RANDOM
 106         ---help---
 107           This driver provides kernel-side support for the Random Number
 108           Generator hardware found on VIA based motherboards.
 109
 110           To compile this driver as a module, choose M here: the
 111           module will be called via-rng.
 112
 113           If unsure, say Y.
 114
 115 config HW_RANDOM_IXP4XX
 116         tristate "Intel IXP4xx NPU HW Random Number Generator support"
 117         depends on HW_RANDOM && ARCH_IXP4XX
 118         default HW_RANDOM
 119         ---help---
 120           This driver provides kernel-side support for the Random
 121           Number Generator hardware found on the Intel IXP4xx NPU.
 122
 123           To compile this driver as a module, choose M here: the
 124           module will be called ixp4xx-rng.
 125
 126           If unsure, say Y.
 127
 128 config HW_RANDOM_OMAP
 129         tristate "OMAP Random Number Generator support"
 130         depends on HW_RANDOM && (ARCH_OMAP16XX || ARCH_OMAP2)
 131         default HW_RANDOM
 132         ---help---
 133           This driver provides kernel-side support for the Random Number
 134           Generator hardware found on OMAP16xx and OMAP24xx multimedia
 135           processors.
 136
 137           To compile this driver as a module, choose M here: the
 138           module will be called omap-rng.
 139
 140           If unsure, say Y.
 141
 142 config HW_RANDOM_OCTEON
 143         tristate "Octeon Random Number Generator support"
 144         depends on HW_RANDOM && CPU_CAVIUM_OCTEON
 145         default HW_RANDOM
 146         ---help---
 147           This driver provides kernel-side support for the Random Number
 148           Generator hardware found on Octeon processors.
 149
 150           To compile this driver as a module, choose M here: the
 151           module will be called octeon-rng.
 152
 153           If unsure, say Y.
 154
 155 config HW_RANDOM_PASEMI
 156         tristate "PA Semi HW Random Number Generator support"
 157         depends on HW_RANDOM && PPC_PASEMI
 158         default HW_RANDOM
 159         ---help---
 160           This driver provides kernel-side support for the Random Number
 161           Generator hardware found on PA Semi PWRficient SoCs.
 162
 163           To compile this driver as a module, choose M here: the
 164           module will be called pasemi-rng.
 165
 166           If unsure, say Y.
 167
 168 config HW_RANDOM_VIRTIO
 169         tristate "VirtIO Random Number Generator support"
 170         depends on HW_RANDOM && VIRTIO
 171         ---help---
 172           This driver provides kernel-side support for the virtual Random Number
 173           Generator hardware.
 174
 175           To compile this driver as a module, choose M here: the
 176           module will be called virtio-rng.  If unsure, say N.
 177
 178 config HW_RANDOM_TX4939
 179         tristate "TX4939 Random Number Generator support"
 180         depends on HW_RANDOM && SOC_TX4939
 181         default HW_RANDOM
 182         ---help---
 183           This driver provides kernel-side support for the Random Number
 184           Generator hardware found on TX4939 SoC.
 185
 186           To compile this driver as a module, choose M here: the
 187           module will be called tx4939-rng.
 188
 189           If unsure, say Y.
 190
 191 config HW_RANDOM_MXC_RNGA
 192         tristate "Freescale i.MX RNGA Random Number Generator"
 193         depends on HW_RANDOM && ARCH_HAS_RNGA
 194         ---help---
 195           This driver provides kernel-side support for the Random Number
 196           Generator hardware found on Freescale i.MX processors.
 197
 198           To compile this driver as a module, choose M here: the
 199           module will be called mxc-rnga.
 200
 201           If unsure, say Y.
 202
 203 config HW_RANDOM_NOMADIK
 204         tristate "ST-Ericsson Nomadik Random Number Generator support"
 205         depends on HW_RANDOM && PLAT_NOMADIK
 206         ---help---
 207           This driver provides kernel-side support for the Random Number
 208           Generator hardware found on ST-Ericsson SoCs (8815 and 8500).
 209
 210           To compile this driver as a module, choose M here: the
 211           module will be called nomadik-rng.
 212
 213           If unsure, say Y.
 214
 215 config HW_RANDOM_PICOXCELL
 216         tristate "Picochip picoXcell true random number generator support"
 217         depends on HW_RANDOM && ARCH_PICOXCELL && PICOXCELL_PC3X3
 218         ---help---
 219           This driver provides kernel-side support for the Random Number
 220           Generator hardware found on Picochip PC3x3 and later devices.
 221
 222           To compile this driver as a module, choose M here: the
 223           module will be called picoxcell-rng.
 224
 225           If unsure, say Y.
 226
 227 config HW_RANDOM_PPC4XX
 228         tristate "PowerPC 4xx generic true random number generator support"
 229         depends on HW_RANDOM && PPC && 4xx
 230         ---help---
 231          This driver provides the kernel-side support for the TRNG hardware
 232          found in the security function of some PowerPC 4xx SoCs.
 233
 234          To compile this driver as a module, choose M here: the
 235          module will be called ppc4xx-rng.
 236
 237          If unsure, say N.
 238
 239 config UML_RANDOM
 240         depends on UML
 241         tristate "Hardware random number generator"
 242         help
 243           This option enables UML's "hardware" random number generator.  It
 244           attaches itself to the host's /dev/random, supplying as much entropy
 245           as the host has, rather than the small amount the UML gets from its
 246           own drivers.  It registers itself as a standard hardware random number
 247           generator, major 10, minor 183, and the canonical device name is
 248           /dev/hwrng.
 249           The way to make use of this is to install the rng-tools package
 250           (check your distro, or download from
 251           http://sourceforge.net/projects/gkernel/).  rngd periodically reads
 252           /dev/hwrng and injects the entropy into /dev/random.
 253
 254 config HW_RANDOM_PSERIES
 255         tristate "pSeries HW Random Number Generator support"
 256         depends on HW_RANDOM && PPC64 && IBMVIO
 257         default HW_RANDOM
 258         ---help---
 259           This driver provides kernel-side support for the Random Number
 260           Generator hardware found on POWER7+ machines and above
 261
 262           To compile this driver as a module, choose M here: the
 263           module will be called pseries-rng.
 264
 265           If unsure, say Y.