diff options
| -rw-r--r-- | chip/g/system.c | 7 | ||||
| -rw-r--r-- | chip/g/system_chip.h | 9 |
2 files changed, 14 insertions, 2 deletions
diff --git a/chip/g/system.c b/chip/g/system.c index f1b45c802e..b3ded8f963 100644 --- a/chip/g/system.c +++ b/chip/g/system.c @@ -523,6 +523,13 @@ int system_process_retry_counter(void) return corrupt_header(newer_image); } +void system_ensure_rollback(void) +{ + GWRITE_FIELD(PMU, LONG_LIFE_SCRATCH_WR_EN, REG0, 1); + GREG32(PMU, LONG_LIFE_SCRATCH0) = RW_BOOT_MAX_RETRY_COUNT + 1; + GWRITE_FIELD(PMU, LONG_LIFE_SCRATCH_WR_EN, REG0, 0); +} + int system_rolling_reboot_suspected(void) { if (GREG32(PMU, LONG_LIFE_SCRATCH0) > 50) { diff --git a/chip/g/system_chip.h b/chip/g/system_chip.h index 251c2d3007..ce63f3eab8 100644 --- a/chip/g/system_chip.h +++ b/chip/g/system_chip.h @@ -57,8 +57,7 @@ int system_battery_cutoff_support_required(void); */ void system_update_rollback_mask(void); -/* - ** +/** * Scan INFO1 rollback map and infomap fields of both RW and RW_B image * headers, and return a string showing how many zeros are there at the base * of in each of these objects. @@ -68,4 +67,10 @@ void system_update_rollback_mask(void); */ void system_get_rollback_bits(char *value, size_t value_size); +/** + * Set the rollback counter to a value which would ensure a rollback on the + * next boot. + */ +void system_ensure_rollback(void); + #endif /* __CROS_EC_SYSTEM_CHIP_H */ |