zephyr/drivers/random/Kconfig

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# 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