537878d2c9
Update documentation for the hw_random support to be current: - Documentation/hw_random.txt has been updated to reflect the current code: it's a framework now, a "core" with a small sysfs interface, that hardware-specific drivers plug in to. Text specific to Intel hardware is now at the end. - Kconfig now references the Documentation/hw_random.txt file and better explains what this really does. Both chunks of documentation now higlight the fact that the kernel entropy pool is maintained by "rngd", and this driver has nothing directly to do with that important task. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
115 lines
3.4 KiB
Plaintext
115 lines
3.4 KiB
Plaintext
#
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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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tristate "Hardware Random Number Generator Core support"
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default m
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---help---
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Hardware Random Number Generator Core infrastructure.
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To compile this driver as a module, choose M here: the
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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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If unsure, say Y.
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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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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 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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config HW_RANDOM_AMD
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tristate "AMD HW Random Number Generator support"
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depends on HW_RANDOM && X86 && PCI
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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 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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config HW_RANDOM_GEODE
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tristate "AMD Geode HW Random Number Generator support"
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depends on HW_RANDOM && X86_32 && PCI
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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 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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config HW_RANDOM_VIA
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tristate "VIA HW Random Number Generator support"
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depends on HW_RANDOM && X86_32
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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 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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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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default HW_RANDOM
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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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config HW_RANDOM_OMAP
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tristate "OMAP Random Number Generator support"
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depends on HW_RANDOM && (ARCH_OMAP16XX || ARCH_OMAP24XX)
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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 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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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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Generator hardware found on PA Semi PWRficient SoCs.
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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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