# Kconfig - random generator driver configuration options # # Copyright (c) 2014-2015 Wind River Systems, Inc. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are met: # # 1) Redistributions of source code must retain the above copyright notice, # this list of conditions and the following disclaimer. # # 2) Redistributions in binary form must reproduce the above copyright notice, # this list of conditions and the following disclaimer in the documentation # and/or other materials provided with the distribution. # # 3) Neither the name of Wind River Systems nor the names of its contributors # may be used to endorse or promote products derived from this software without # specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE # POSSIBILITY OF SUCH DAMAGE. # menu "Random Generation Configuration" config RANDOM_GENERATOR bool prompt "Custom random generator" default n help This option signifies that the target uses a real random number generator. config TEST_RANDOM_GENERATOR bool prompt "Non-random number generator" depends on !RANDOM_GENERATOR default n help This option signifies that the kernel's random number APIs are permitted to return values that are not truly random. This capability is provided for testing purposes, when a truly random number generator is not available. The non-random number generator should not be used in a production environment. config X86_TSC_RANDOM_GENERATOR bool prompt "x86 timestamp counter based number generator" depends on TEST_RANDOM_GENERATOR && X86_32 default y help This options enables number generator based on timestamp counter of x86 platform, obtained with rdtsc instruction. config TIMER_RANDOM_GENERATOR bool prompt "System timer clock based number generator" depends on TEST_RANDOM_GENERATOR && !X86_TSC_RANDOM_GENERATOR default y help This options enables number generator based on system timer clock. This number generator is not random and used for testing only. endmenu