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| author | Randall Spangler <rspangler@chromium.org> | 2017-07-12 12:56:48 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-07-19 14:41:21 -0700 |
| commit | a6060f53ee2c2736031b5fea80884886c6e08816 (patch) | |
| tree | c412e882d29a0e65fb90ad29e66ac98798fc69e2 /include/system.h | |
| parent | 1082d99ca629c88a46996f3911f0a5af98dd3ba8 (diff) | |
| download | chrome-ec-a6060f53ee2c2736031b5fea80884886c6e08816.tar.gz | |
cr50: Add physical presence state machine
This will be used as part of case closed debugging configuration.
Currently, this only adds the state machine, and a test command which
is available when CR50_DEV=1. It also adds a new sleep mask flag for
physical presence detect, instead of oveloading FORCE_NO_DSLEEP.
The physical presence state machine supports both short (tap 5 times
in 15 seconds) and long (short, followed by 4 more taps 1-5 minutes
apart) sequences. It will call a callback function at the end of the
sequence, so that multiple things can each request physical presence
in turn. This will be used by ccdopen / ccdunlock / testlab commands
for CCD V1.
Eventually, CCD config will replace the unlock sequence handling in
wp.c. But for now, we don't touch that.
See go/cr50-ccd-wp for more information.
BUG=b:62537474
BRANCH=none
TEST=manual
Short sequence:
pp short
pp
pp
pp # See "Physical presence good"
Timeout
pp short
pp # 15 sec later, get timeout error
Long sequence:
pp long
pp
pp
pp
(wait 2 sec)
pp
(wait 2 sec)
pp # See "PP good"
Long sequence, presses too fast:
pp long
pp
pp
pp
pp # See "PP L too soon"
(wait 2 sec)
pp
(wait 2 sec)
pp # See "Physical presence good"
Abort:
pp short
pp abort # See "Physical presence aborted"
Change-Id: I09da81ad11d328e7d7740c3fe838a5f67d7b8708
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/568796
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-by: Mary Ruthven <mruthven@chromium.org>
Diffstat (limited to 'include/system.h')
| -rw-r--r-- | include/system.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/system.h b/include/system.h index cd7f42817e..a4595b3651 100644 --- a/include/system.h +++ b/include/system.h @@ -389,6 +389,8 @@ enum { SLEEP_MASK_FAN = (1 << 8), /* Fan control loop ongoing */ SLEEP_MASK_USB_DEVICE = (1 << 9), /* Generic USB device in use */ SLEEP_MASK_PWM = (1 << 10), /* PWM output is enabled */ + SLEEP_MASK_PHYSICAL_PRESENCE = (1 << 11), /* Physical presence + * detection ongoing */ SLEEP_MASK_FORCE_NO_DSLEEP = (1 << 15), /* Force disable. */ |