Nicolas Boichat 871bf8da2c system: Add support for emulated sysrq
On keyboard-less design, we will implement a special debug mode,
based on button sequences, to transmit sysrq events to the AP.

This implements the new MKBP event to send sysrq, and a console
command to test it. Later CL will implement debug mode itself.

BRANCH=none
BUG=b:35775099
TEST=sysrq available in EC console
TEST=sysrq h => help message in AP console
TEST=sysrq b => AP reboots

Change-Id: I71d3f77497baf8cc7fac65cd040ce20513b507bc
Reviewed-on: https://chromium-review.googlesource.com/456520
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
2017-03-31 22:33:33 -07:00
2016-11-10 21:28:33 -08:00
2017-03-23 19:03:57 -07:00
2017-03-31 18:57:01 -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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