Daisuke Nojiri 92b7baff54 system: Add simplified sysrq
On a keyboard-less, volume-button-less board, we support simplified
sysrq handling.

For Fizz, we use the recovery button to trigger sysrq event and
holding it down to trigger warm reset.

BUG=b:38418116,b:38417391
BRANCH=none
TEST=On Fizz, try
1. Press recovery button and release -> sysrq sent
2. Press and hold recovery button -> warm reset
3. Press recovery button and power button -> enter recovery mode

Change-Id: If8760319dba3df4545e9805b396ac89c241dae80
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/537817
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2017-06-23 22:56:49 -07:00
2017-06-23 22:56:49 -07:00
2017-06-23 22:56:49 -07:00
2017-06-23 00:51:19 -07:00
2017-06-22 17:03:52 -07:00
2017-06-23 22:56:49 -07:00
2017-06-22 17:03:52 -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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