nagendra modadugu bbdb9fb321 CR50: configure AES rand stalls
This change configures the AES engine to
a) enable rand stalls at 25% during regular
operation through AES API's, and b) disable
rand stalls when doing fixed-key bulk-encryption
(e.g. NVRAM ciphering).

TCG tests continue to complete in ~20 minutes
(i.e. no noticable slowdown).

BRANCH=none
BUG=b:38315169
TEST=TCG tests pass

Change-Id: I2d26d232491a27bffbbe0b5aedfebaf04e0ad509
Signed-off-by: nagendra modadugu <ngm@google.com>
Reviewed-on: https://chromium-review.googlesource.com/502717
Commit-Ready: Nagendra Modadugu <ngm@google.com>
Tested-by: Nagendra Modadugu <ngm@google.com>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
2017-05-15 20:51:37 -07:00
2017-05-15 20:51:37 -07:00
2016-11-10 21:28:33 -08:00
2017-05-12 18:46:14 -07:00
2017-05-09 23:20:07 -07:00
2012-05-11 09:11:52 -07:00
2014-04-02 19:58:53 +00:00
2015-12-08 20:05:05 -08:00

For an overview of the Embedded Controller firmware, refer to

http://www.chromium.org/chromium-os/2014-firmware-summit

For instructions on building from source, refer to

http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly
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