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| author | Jack Rosenthal <jrosenth@chromium.org> | 2019-05-13 15:22:36 -0600 |
|---|---|---|
| committer | Jack Rosenthal <jrosenth@chromium.org> | 2019-06-06 19:55:59 +0000 |
| commit | 0c5985a74f66f89f05d6f26666c15229fc68d1df (patch) | |
| tree | 99aaeabb8b1d4ac9cf302a170725876e715f5c2f /chip/ish/watchdog.c | |
| parent | c723e723392aabc35747a6678b4b7931d7aeddb7 (diff) | |
| download | chrome-ec-0c5985a74f66f89f05d6f26666c15229fc68d1df.tar.gz | |
ish: max-retries mechanism for watchdog timer
This adds a relevant config option, as well as implementation for a
max-retries mechanism on the watchdog timer. Included is an
implementation for ISH which counts persistent data storage and halts
when the max-retries is exceeded.
BUG=b:132059981
BRANCH=none
TEST=observed system halt after 4 resets, then re-enable once we had a
successful reset
Change-Id: I7b443d9a20a474b294d494c5b6046a38eaf6ff12
Signed-off-by: Jack Rosenthal <jrosenth@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1609605
Reviewed-by: Jett Rink <jettrink@chromium.org>
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>
Diffstat (limited to 'chip/ish/watchdog.c')
| -rw-r--r-- | chip/ish/watchdog.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/chip/ish/watchdog.c b/chip/ish/watchdog.c index 79f6e788df..2e83b57f25 100644 --- a/chip/ish/watchdog.c +++ b/chip/ish/watchdog.c @@ -21,6 +21,7 @@ #include "common.h" #include "hooks.h" +#include "ish_persistent_data.h" #include "task.h" #include "registers.h" #include "system.h" @@ -32,6 +33,13 @@ int watchdog_init(void) { + /* + * Put reset counter back at zero if last reset was not caused + * by watchdog + */ + if ((system_get_reset_flags() & RESET_FLAG_WATCHDOG) == 0) + ish_persistent_data.watchdog_counter = 0; + /* Initialize WDT clock divider */ CCU_WDT_CD = WDT_CLOCK_HZ / 10; /* 10 Hz => 100 ms period */ |