954baea90b
Restructure the RANDOM Kconfig to match the structure used in other drivers with a single top level menu. Move the true random number generators to appear first in the menu, with pseudo generators at the bottom. Do not present pseudo generators if a true random generator is presented. This change implies that tests, samples and applications that require the random driver interface must now select CONFIG_RANDOM_GENERATOR. In order for tests and samples to build (and run) on platforms that have no random driver it remains necessary to select the CONFIG_TEST_RANDOM_GENERATOR. Note that CONFIG_TEST_RANDOM_GENERATOR retains its original purpose of enabling a random driver that delivers non random numbers for the purpose of testing only. Change-Id: I2e28e44b4adf800e64a885aefe36a52da8aa455a Signed-off-by: Marcus Shawcroft <marcus.shawcroft@arm.com>
69 lines
2.0 KiB
Plaintext
69 lines
2.0 KiB
Plaintext
# Kconfig - random generator driver configuration options
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#
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# Copyright (c) 2014-2015 Wind River Systems, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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menuconfig RANDOM_GENERATOR
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bool
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prompt "Random Drivers"
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default n
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help
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Include RANDOM drivers in system config.
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if RANDOM_GENERATOR
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source "drivers/random/Kconfig.ksdk"
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config RANDOM_HAS_DRIVER
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bool
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default n
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help
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This is an option to be enabled by individual random driver
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to signal that there is a true random driver.
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config TEST_RANDOM_GENERATOR
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bool
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prompt "Non-random number generator"
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depends on RANDOM_GENERATOR && ! RANDOM_HAS_DRIVER
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default n
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help
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This option signifies that the kernel's random number APIs are
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permitted to return values that are not truly random.
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This capability is provided for testing purposes, when a truly random
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number generator is not available. The non-random number generator
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should not be used in a production environment.
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config X86_TSC_RANDOM_GENERATOR
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bool
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prompt "x86 timestamp counter based number generator"
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depends on TEST_RANDOM_GENERATOR && X86
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default y
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help
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This options enables number generator based on timestamp counter
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of x86 boards, obtained with rdtsc instruction.
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config TIMER_RANDOM_GENERATOR
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bool
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prompt "System timer clock based number generator"
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depends on TEST_RANDOM_GENERATOR && !X86_TSC_RANDOM_GENERATOR
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default y
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help
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This options enables number generator based on system timer
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clock. This number generator is not random and used for
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testing only.
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endif
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