diff options
| author | Randall Spangler <rspangler@chromium.org> | 2012-08-07 16:33:30 -0700 |
|---|---|---|
| committer | Gerrit <chrome-bot@google.com> | 2012-08-09 13:34:23 -0700 |
| commit | 37470f1e778157f5ca3680820ca68353f3c4ab38 (patch) | |
| tree | ccaaa5f5cd092fcaf215a62ff19586c281b4e691 | |
| parent | d023f302c81157a9dc9bcd1f773043e7f2639f1a (diff) | |
| download | chrome-ec-37470f1e778157f5ca3680820ca68353f3c4ab38.tar.gz | |
Clear hibernate data when enabling hibernate module clock
This ensures it comes up in a known-good state.
BUG=none
TEST=manual
scratchpad write 0x12345
hibernate 1
scratchpad -> still 0x12345
keyboard reset
scratchpad -> still 0x12345
pull power and battery, then plug back in
scratchpad -> now 0
Change-Id: I2c205f53e03eefe915260b9be39c809ea7d69293
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/29500
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
| -rw-r--r-- | chip/lm4/system.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/chip/lm4/system.c b/chip/lm4/system.c index 8cd789c31f..83e6cbaefe 100644 --- a/chip/lm4/system.c +++ b/chip/lm4/system.c @@ -298,6 +298,10 @@ int system_pre_init(void) wait_for_hibctl_wc(); LM4_HIBERNATE_HIBCTL |= LM4_HIBCTL_RTCEN; system_set_rtc(0); + + /* Clear all hibernate data entries */ + for (i = 0; i < LM4_HIBERNATE_HIBDATA_ENTRIES; i++) + hibdata_write(i, 0); } /* |