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| author | Nicolas Boichat <drinkcat@chromium.org> | 2018-07-09 15:59:24 +0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-07-10 23:45:51 -0700 |
| commit | 6e8bc42dbd8710b99cdba92c40a1aec1eabcb0d6 (patch) | |
| tree | ea379ac88bf4ef2ef866bc37c3a896bfd3cd1a8b /core/nds32/init.S | |
| parent | e0abbbb5f8bd54ac7586df334979e7cd57df7802 (diff) | |
| download | chrome-ec-6e8bc42dbd8710b99cdba92c40a1aec1eabcb0d6.tar.gz | |
stm32h7: Add support for TRNG
STM32H7 contains a True Random Number Generator. Add support for
that.
We source rng_clk from HSI48 oscillator (confusingly misspelled
hsi8_clk in RM), and fine-tune number of tries to make sure we
wait long enough for a random number, no matter the CPU speed
(64 or 400 MHz).
We also add a console command to test the random number generator
(disabled by default).
BRANCH=none
BUG=b:111190988
TEST=reboot; clock pll; rand => works.
TEST=reboot; rand => works.
Change-Id: I45624ff4df30b6a332226245e02e3e435b9b15bf
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1128785
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Diffstat (limited to 'core/nds32/init.S')
0 files changed, 0 insertions, 0 deletions