2006-06-26 15:24:59 +08:00
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#
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# Hardware Random Number Generator (RNG) configuration
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#
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config HW_RANDOM
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2006-12-07 12:38:20 +08:00
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tristate "Hardware Random Number Generator Core support"
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default m
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2006-06-26 15:24:59 +08:00
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---help---
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Hardware Random Number Generator Core infrastructure.
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2006-12-07 12:38:20 +08:00
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To compile this driver as a module, choose M here: the
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2008-03-25 03:29:51 +08:00
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module will be called rng-core. This provides a device
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that's usually called /dev/hw_random, and which exposes one
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of possibly several hardware random number generators.
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These hardware random number generators do not feed directly
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into the kernel's random number generator. That is usually
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handled by the "rngd" daemon. Documentation/hw_random.txt
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has more information.
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2006-12-07 12:38:20 +08:00
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2006-06-26 15:24:59 +08:00
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If unsure, say Y.
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2006-06-26 15:24:59 +08:00
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hwrng: timeriomem - New driver
Some hardware platforms, the TS-7800[1] is one for example, can
supply the kernel with an entropy source, albeit a slow one for
TS-7800 users, by just reading a particular IO address. This
source must not be read above a certain rate otherwise the quality
suffers.
The driver is then hooked into by calling
platform_device_(register|add|del) passing a structure similar to:
------
static struct timeriomem_rng_data ts78xx_ts_rng_data = {
.address = (u32 *__iomem) TS_RNG,
.period = 1000000, /* one second */
};
static struct platform_device ts78xx_ts_rng_device = {
.name = "timeriomem_rng",
.id = -1,
.dev = {
.platform_data = &ts78xx_ts_rng_data,
},
.num_resources = 0,
};
------
[1] http://www.embeddedarm.com/products/board-detail.php?product=TS-7800
Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-02-22 12:03:56 +08:00
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config HW_RANDOM_TIMERIOMEM
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tristate "Timer IOMEM HW Random Number Generator support"
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2009-03-21 14:19:04 +08:00
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depends on HW_RANDOM && HAS_IOMEM
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hwrng: timeriomem - New driver
Some hardware platforms, the TS-7800[1] is one for example, can
supply the kernel with an entropy source, albeit a slow one for
TS-7800 users, by just reading a particular IO address. This
source must not be read above a certain rate otherwise the quality
suffers.
The driver is then hooked into by calling
platform_device_(register|add|del) passing a structure similar to:
------
static struct timeriomem_rng_data ts78xx_ts_rng_data = {
.address = (u32 *__iomem) TS_RNG,
.period = 1000000, /* one second */
};
static struct platform_device ts78xx_ts_rng_device = {
.name = "timeriomem_rng",
.id = -1,
.dev = {
.platform_data = &ts78xx_ts_rng_data,
},
.num_resources = 0,
};
------
[1] http://www.embeddedarm.com/products/board-detail.php?product=TS-7800
Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-02-22 12:03:56 +08:00
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---help---
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This driver provides kernel-side support for a generic Random
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Number Generator used by reading a 'dumb' iomem address that
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is to be read no faster than, for example, once a second;
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the default FPGA bitstream on the TS-7800 has such functionality.
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To compile this driver as a module, choose M here: the
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module will be called timeriomem-rng.
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If unsure, say Y.
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2006-06-26 15:24:59 +08:00
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config HW_RANDOM_INTEL
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tristate "Intel HW Random Number Generator support"
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depends on HW_RANDOM && (X86 || IA64) && PCI
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2006-12-07 12:38:20 +08:00
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default HW_RANDOM
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2006-06-26 15:24:59 +08:00
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---help---
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This driver provides kernel-side support for the Random Number
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Generator hardware found on Intel i8xx-based motherboards.
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To compile this driver as a module, choose M here: the
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module will be called intel-rng.
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If unsure, say Y.
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2006-06-26 15:25:00 +08:00
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config HW_RANDOM_AMD
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tristate "AMD HW Random Number Generator support"
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2011-04-28 03:21:16 +08:00
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depends on HW_RANDOM && (X86 || PPC_MAPLE) && PCI
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2006-12-07 12:38:20 +08:00
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default HW_RANDOM
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2006-06-26 15:25:00 +08:00
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---help---
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This driver provides kernel-side support for the Random Number
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Generator hardware found on AMD 76x-based motherboards.
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To compile this driver as a module, choose M here: the
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module will be called amd-rng.
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If unsure, say Y.
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2006-06-26 15:25:01 +08:00
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2011-10-07 01:56:30 +08:00
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config HW_RANDOM_ATMEL
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tristate "Atmel Random Number Generator support"
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depends on HW_RANDOM && ARCH_AT91SAM9G45
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default HW_RANDOM
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---help---
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This driver provides kernel-side support for the Random Number
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Generator hardware found on Atmel AT91 devices.
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To compile this driver as a module, choose M here: the
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module will be called atmel-rng.
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If unsure, say Y.
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2006-06-26 15:25:01 +08:00
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config HW_RANDOM_GEODE
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tristate "AMD Geode HW Random Number Generator support"
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2007-07-21 23:11:22 +08:00
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depends on HW_RANDOM && X86_32 && PCI
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2006-12-07 12:38:20 +08:00
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default HW_RANDOM
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2006-06-26 15:25:01 +08:00
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---help---
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This driver provides kernel-side support for the Random Number
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Generator hardware found on the AMD Geode LX.
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To compile this driver as a module, choose M here: the
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module will be called geode-rng.
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If unsure, say Y.
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2006-06-26 15:25:02 +08:00
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2008-06-04 06:56:11 +08:00
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config HW_RANDOM_N2RNG
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tristate "Niagara2 Random Number Generator support"
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depends on HW_RANDOM && SPARC64
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default HW_RANDOM
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---help---
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This driver provides kernel-side support for the Random Number
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Generator hardware found on Niagara2 cpus.
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To compile this driver as a module, choose M here: the
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module will be called n2-rng.
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If unsure, say Y.
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2006-06-26 15:25:02 +08:00
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config HW_RANDOM_VIA
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tristate "VIA HW Random Number Generator support"
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2009-05-15 14:01:52 +08:00
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depends on HW_RANDOM && X86
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2006-12-07 12:38:20 +08:00
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default HW_RANDOM
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2006-06-26 15:25:02 +08:00
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---help---
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This driver provides kernel-side support for the Random Number
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Generator hardware found on VIA based motherboards.
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To compile this driver as a module, choose M here: the
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module will be called via-rng.
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If unsure, say Y.
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2006-06-26 15:25:02 +08:00
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config HW_RANDOM_IXP4XX
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tristate "Intel IXP4xx NPU HW Random Number Generator support"
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depends on HW_RANDOM && ARCH_IXP4XX
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2006-12-07 12:38:20 +08:00
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default HW_RANDOM
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2006-06-26 15:25:02 +08:00
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---help---
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This driver provides kernel-side support for the Random
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Number Generator hardware found on the Intel IXP4xx NPU.
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To compile this driver as a module, choose M here: the
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module will be called ixp4xx-rng.
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If unsure, say Y.
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2006-06-26 15:25:03 +08:00
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config HW_RANDOM_OMAP
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tristate "OMAP Random Number Generator support"
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2010-02-13 04:26:47 +08:00
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depends on HW_RANDOM && (ARCH_OMAP16XX || ARCH_OMAP2)
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2006-12-07 12:38:20 +08:00
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default HW_RANDOM
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2006-06-26 15:25:03 +08:00
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---help---
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This driver provides kernel-side support for the Random Number
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Generator hardware found on OMAP16xx and OMAP24xx multimedia
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processors.
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To compile this driver as a module, choose M here: the
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module will be called omap-rng.
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If unsure, say Y.
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2007-05-09 17:33:35 +08:00
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2009-08-21 05:10:23 +08:00
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config HW_RANDOM_OCTEON
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tristate "Octeon Random Number Generator support"
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depends on HW_RANDOM && CPU_CAVIUM_OCTEON
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default HW_RANDOM
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---help---
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This driver provides kernel-side support for the Random Number
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Generator hardware found on Octeon processors.
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To compile this driver as a module, choose M here: the
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module will be called octeon-rng.
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If unsure, say Y.
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2007-05-09 17:33:35 +08:00
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config HW_RANDOM_PASEMI
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tristate "PA Semi HW Random Number Generator support"
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depends on HW_RANDOM && PPC_PASEMI
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default HW_RANDOM
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---help---
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This driver provides kernel-side support for the Random Number
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2007-11-05 10:57:45 +08:00
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Generator hardware found on PA Semi PWRficient SoCs.
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2007-05-09 17:33:35 +08:00
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To compile this driver as a module, choose M here: the
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module will be called pasemi-rng.
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If unsure, say Y.
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2008-05-31 04:09:44 +08:00
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config HW_RANDOM_VIRTIO
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tristate "VirtIO Random Number Generator support"
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depends on HW_RANDOM && VIRTIO
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---help---
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This driver provides kernel-side support for the virtual Random Number
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Generator hardware.
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To compile this driver as a module, choose M here: the
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module will be called virtio-rng. If unsure, say N.
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2009-04-02 23:38:41 +08:00
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2009-06-02 22:54:21 +08:00
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config HW_RANDOM_TX4939
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tristate "TX4939 Random Number Generator support"
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depends on HW_RANDOM && SOC_TX4939
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default HW_RANDOM
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---help---
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This driver provides kernel-side support for the Random Number
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Generator hardware found on TX4939 SoC.
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To compile this driver as a module, choose M here: the
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module will be called tx4939-rng.
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If unsure, say Y.
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2009-04-02 23:38:41 +08:00
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config HW_RANDOM_MXC_RNGA
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tristate "Freescale i.MX RNGA Random Number Generator"
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depends on HW_RANDOM && ARCH_HAS_RNGA
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---help---
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This driver provides kernel-side support for the Random Number
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Generator hardware found on Freescale i.MX processors.
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To compile this driver as a module, choose M here: the
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module will be called mxc-rnga.
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If unsure, say Y.
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2009-12-19 19:45:43 +08:00
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config HW_RANDOM_NOMADIK
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tristate "ST-Ericsson Nomadik Random Number Generator support"
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depends on HW_RANDOM && PLAT_NOMADIK
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---help---
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This driver provides kernel-side support for the Random Number
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Generator hardware found on ST-Ericsson SoCs (8815 and 8500).
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To compile this driver as a module, choose M here: the
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module will be called nomadik-rng.
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If unsure, say Y.
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2011-01-23 15:58:29 +08:00
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config HW_RANDOM_PICOXCELL
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tristate "Picochip picoXcell true random number generator support"
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depends on HW_RANDOM && ARCH_PICOXCELL && PICOXCELL_PC3X3
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---help---
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This driver provides kernel-side support for the Random Number
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Generator hardware found on Picochip PC3x3 and later devices.
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To compile this driver as a module, choose M here: the
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module will be called picoxcell-rng.
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If unsure, say Y.
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2011-06-27 15:34:54 +08:00
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config HW_RANDOM_PPC4XX
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tristate "PowerPC 4xx generic true random number generator support"
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depends on HW_RANDOM && PPC && 4xx
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---help---
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This driver provides the kernel-side support for the TRNG hardware
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found in the security function of some PowerPC 4xx SoCs.
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To compile this driver as a module, choose M here: the
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module will be called ppc4xx-rng.
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If unsure, say N.
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2011-08-19 03:13:00 +08:00
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config UML_RANDOM
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depends on UML
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tristate "Hardware random number generator"
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help
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This option enables UML's "hardware" random number generator. It
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attaches itself to the host's /dev/random, supplying as much entropy
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as the host has, rather than the small amount the UML gets from its
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own drivers. It registers itself as a standard hardware random number
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generator, major 10, minor 183, and the canonical device name is
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/dev/hwrng.
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The way to make use of this is to install the rng-tools package
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(check your distro, or download from
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http://sourceforge.net/projects/gkernel/). rngd periodically reads
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/dev/hwrng and injects the entropy into /dev/random.
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