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50 lines
1.6 KiB
50 lines
1.6 KiB
# TI CC13xx / CC26xx entropy driver configuration |
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# Copyright (c) 2019 Brett Witherspoon |
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# SPDX-License-Identifier: Apache-2.0 |
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config ENTROPY_CC13XX_CC26XX_RNG |
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bool "TI SimpleLink CC13xx / CC26xx True Random Number Generator (TRNG)" |
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default y |
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depends on DT_HAS_TI_CC13XX_CC26XX_TRNG_ENABLED |
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select ENTROPY_HAS_DRIVER |
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select RING_BUFFER |
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help |
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This option enables the driver for the True Random Number Generator (TRNG) |
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for TI SimpleLink CC13xx / CC26xx SoCs. |
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if ENTROPY_CC13XX_CC26XX_RNG |
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config ENTROPY_CC13XX_CC26XX_POOL_SIZE |
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int "Number of bytes in the entropy pool" |
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default 512 |
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help |
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The size in bytes of the buffer used to store entropy generated by the |
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hardware. Should be a power of two for high performance. |
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config ENTROPY_CC13XX_CC26XX_SAMPLES_PER_CYCLE |
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int "Number of samples to generate entropy" |
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range 256 16777216 |
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default 240000 |
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help |
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The number of samples used to generate entropy. The time required to |
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generate 64 bits of entropy is determined by the number of FROs enabled, |
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the sampling (system) clock frequency, and this value. |
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config ENTROPY_CC13XX_CC26XX_ALARM_THRESHOLD |
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int "Threshold for detected repeated patterns" |
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range 0 $(UINT8_MAX) |
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default $(UINT8_MAX) |
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help |
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The number of samples detected with repeating patterns before an alarm |
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event is triggered. The associated FRO is automatically shut down. |
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config ENTROPY_CC13XX_CC26XX_SHUTDOWN_THRESHOLD |
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int "Threshold for the number of FROs automatically shut down" |
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range 0 24 |
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default 0 |
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help |
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The number of FROs allowed to be shutdown before the driver attempts to |
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take corrective action. |
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endif # ENTROPY_CC13XX_CC26XX_RNG
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