patrick/zephyr
1
0
Fork 0
Code Issues Pull requests Actions 8 Packages Projects Releases Wiki Activity
zephyr/drivers/entropy/Kconfig.rv32m1

19 lines
569 B
Plaintext
Raw Normal View History

kconfig: Fix up newly-introduced copy-pasted headers Same deal as in https://github.com/zephyrproject-rtos/zephyr/pull/20280, for newly-introduced stuff. Will avoid failures with the new CI test in https://github.com/zephyrproject-rtos/ci-tools/pull/112, though it only checks changed files. Also fix some un-indented properties on choices. Choice properties work the same as symbol properties syntactically. Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2019-11-18 12:01:42 +01:00
# RV32M1 entropy generator driver configuration
drivers: entropy: add openisa/RV32M1 entropy driver Wrapper for openisa/RV32M1 TRNG driver Signed-off-by: George Stefan <george.stefan@nxp.com>
2019-04-08 17:12:40 +02:00
# Copyright 2019 NXP
# SPDX-License-Identifier: Apache-2.0
drivers: entropy: rv32m1: Turn pointless 'menuconfig' into 'config' Same deal as in commit 677f1e6 ("config: Turn pointless/confusing 'menuconfig's into 'config's"), for a newly introduced symbol. Also clean up a header to be consistent with recent cleanups. Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2019-11-14 05:44:34 +01:00
config ENTROPY_RV32M1_TRNG
drivers: entropy: add openisa/RV32M1 entropy driver Wrapper for openisa/RV32M1 TRNG driver Signed-off-by: George Stefan <george.stefan@nxp.com>
2019-04-08 17:12:40 +02:00
bool "RV32M1 TRNG driver"
kconfig: rv32m1: Remove redundant ENTROPY_GENERATOR dependency Kconfig.rv32m1 is already 'source'd within an 'if ENTROPY_GENERATOR', so ENTROPY_RV32M1_TRNG does not need a 'depends on ENTROPY_GENERATOR'. Flagged by https://github.com/zephyrproject-rtos/ci-tools/pull/128. Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2020-02-07 16:45:43 +01:00
depends on SOC_OPENISA_RV32M1_RISCV32
drivers: entropy: add openisa/RV32M1 entropy driver Wrapper for openisa/RV32M1 TRNG driver Signed-off-by: George Stefan <george.stefan@nxp.com>
2019-04-08 17:12:40 +02:00
select ENTROPY_HAS_DRIVER
help
This option enables the true random number generator (TRNG)
driver based on the RV32M1 TRNG driver.
boards: riscv: rv32m1: use xoroshiro as default RNG Don't use use the RV32M1 TRNG as a random source since it can be quite slow. Instead, use the software implemented xoroshiro RNG. Signed-off-by: David Leach <david.leach@nxp.com>
2019-09-19 12:19:55 +02:00
# Don't use use the RV32M1 TRNG as a random source since it can be quite slow.
random: deprecate `XOROSHIRO_RANDOM_GENERATOR` Deprecate the xoroshiro128+ PRNG algorithm in favour of xoshiro128++. xoshiro128++ is a drop-in replacement which is invisible from the user perspective. xoroshiro128+ is unsuitable because it is explicitly a floating-point PRNG, not a general-purpose PRNG. This means that the lower 4 bits of the output are actually linear, not random (from the designers, https://prng.di.unimi.it/). This means 1/8th of the generated data is not random. Additionally, xoroshiro128+ is not a 32bit algorithm, it operates on 64bit numbers. For the vast majority of Zephyr devices, this makes the PRNG slower than it needs to be. The replacement (xoshiro128++) is 32bit, with no loss in state space (still 128 bit). Signed-off-by: Jordan Yates <jordan.yates@data61.csiro.au>
2021-07-25 11:00:50 +02:00
# Instead, use the software implemented xoshiro RNG.
boards: riscv: rv32m1: use xoroshiro as default RNG Don't use use the RV32M1 TRNG as a random source since it can be quite slow. Instead, use the software implemented xoroshiro RNG. Signed-off-by: David Leach <david.leach@nxp.com>
2019-09-19 12:19:55 +02:00
choice RNG_GENERATOR_CHOICE
random: deprecate `XOROSHIRO_RANDOM_GENERATOR` Deprecate the xoroshiro128+ PRNG algorithm in favour of xoshiro128++. xoshiro128++ is a drop-in replacement which is invisible from the user perspective. xoroshiro128+ is unsuitable because it is explicitly a floating-point PRNG, not a general-purpose PRNG. This means that the lower 4 bits of the output are actually linear, not random (from the designers, https://prng.di.unimi.it/). This means 1/8th of the generated data is not random. Additionally, xoroshiro128+ is not a 32bit algorithm, it operates on 64bit numbers. For the vast majority of Zephyr devices, this makes the PRNG slower than it needs to be. The replacement (xoshiro128++) is 32bit, with no loss in state space (still 128 bit). Signed-off-by: Jordan Yates <jordan.yates@data61.csiro.au>
2021-07-25 11:00:50 +02:00
default XOSHIRO_RANDOM_GENERATOR if ENTROPY_RV32M1_TRNG
boards: riscv: rv32m1: use xoroshiro as default RNG Don't use use the RV32M1 TRNG as a random source since it can be quite slow. Instead, use the software implemented xoroshiro RNG. Signed-off-by: David Leach <david.leach@nxp.com>
2019-09-19 12:19:55 +02:00
endchoice
Reference in a new issue Copy permalink