From 9b98febe7a9126ab4a323c8eeedb1427e959f7d9 Mon Sep 17 00:00:00 2001 From: Subrata Banik Date: Wed, 13 Dec 2017 11:02:43 +0530 Subject: soc/intel/common: Add API to restore power failure into PMC common code PMC config register need to program to define which state system should be after reapplied power from G3 state. 0 = System will return to S0 state 1 = System will return to S5 state 2 = System will return to previous state before failure Refer to EDS for detailed programming sequence. Change-Id: I0ce2cc77745d00a8cfe3eed7c6372af77e063d02 Signed-off-by: Subrata Banik Reviewed-on: https://review.coreboot.org/22838 Reviewed-by: Furquan Shaikh Reviewed-by: Aaron Durbin Tested-by: build bot (Jenkins) --- .../common/block/include/intelblocks/pmclib.h | 24 ++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'src/soc/intel/common/block/include/intelblocks/pmclib.h') diff --git a/src/soc/intel/common/block/include/intelblocks/pmclib.h b/src/soc/intel/common/block/include/intelblocks/pmclib.h index a045bbea58..3827cf511a 100644 --- a/src/soc/intel/common/block/include/intelblocks/pmclib.h +++ b/src/soc/intel/common/block/include/intelblocks/pmclib.h @@ -132,6 +132,12 @@ void pmc_clear_all_gpe_status(void); /* Clear status bits in Power and Reset Status (PRSTS) register */ void pmc_clear_prsts(void); +/* + * Set PMC register to know which state system should be after + * power reapplied + */ +void pmc_soc_restore_power_failure(void); + /* * Enable or disable global reset. If global reset is enabled, hard reset and * soft reset will trigger global reset, where both host and TXE are reset. @@ -205,4 +211,22 @@ void soc_get_gpi_gpe_configs(uint8_t *dw0, uint8_t *dw1, uint8_t *dw2); */ void soc_fill_power_state(struct chipset_power_state *ps); +/* + * Which state do we want to goto after g3 (power restored)? + * 0 == S5 Soft Off + * 1 == S0 Full On + * 2 == Keep Previous State + */ +enum { + MAINBOARD_POWER_STATE_OFF, + MAINBOARD_POWER_STATE_ON, + MAINBOARD_POWER_STATE_PREVIOUS, +}; + +/* + * Determines what state to go to when power is reapplied + * after a power failure (G3 State) + */ +int pmc_get_mainboard_power_failure_state_choice(void); + #endif /* SOC_INTEL_COMMON_BLOCK_PMCLIB_H */ -- cgit v1.2.3