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Differential D48943

Add StarFive JH7110 true random number generator driver
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Authored by jsihv_gmx.com on Feb 11 2025, 4:21 PM.

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Group Reviewers

riscv
csprng

Summary

TRNG driver for JH7110. A simple implementation which follows the algorithm used in OpenBSD (should this be mentioned on the code?). It has been tested that it calls random_harvest_queue() once in a second and passes data that looks random. Haven't seen any LFSR_LOCKUP happening.

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Repository

rG FreeBSD src repository

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Event Timeline

jsihv_gmx.com created this revision.Feb 11 2025, 4:21 PM

Herald added a subscriber: imp. · View Herald TranscriptFeb 11 2025, 4:21 PM

jsihv_gmx.com requested review of this revision.Feb 11 2025, 4:21 PM

Herald added a subscriber: obrien. · View Herald TranscriptFeb 11 2025, 4:21 PM

thj added a reviewer: security.May 26 2025, 3:09 PM

thj edited reviewers, added: csprng; removed: security.May 26 2025, 3:12 PM

FYI, it's best practice to generate diffs with full context (-U999999 or whatever).

Revision Contents
Changeset List

Path

Size

sys/

dev/

clk/

starfive/

jh7110_clk_stg.c

6 lines

random/

random_harvestq.c

1 line

riscv/

starfive/

1 line

205 lines

sys/

1 line

Diff 150848

sys/dev/clk/starfive/jh7110_clk_stg.c

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sys/dev/random/random_harvestq.c

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sys/riscv/starfive/files.starfive

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sys/riscv/starfive/jh7110_trng.c

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sys/sys/random.h

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