diff options
| author | Subrata Banik <subrata.banik@intel.com> | 2017-12-13 11:02:43 +0530 |
|---|---|---|
| committer | Subrata Banik <subrata.banik@intel.com> | 2017-12-21 03:48:00 +0000 |
| commit | 9b98febe7a9126ab4a323c8eeedb1427e959f7d9 (patch) | |
| tree | 9da5751c0215f152dc04f93868a8a189b6ac8630 /src/soc/intel/common/block/pmc | |
| parent | e5ab9e28a6041209fd88bc7f760df60662539ba1 (diff) | |
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 <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/22838
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/intel/common/block/pmc')
| -rw-r--r-- | src/soc/intel/common/block/pmc/Kconfig | 25 | ||||
| -rw-r--r-- | src/soc/intel/common/block/pmc/pmclib.c | 26 |
2 files changed, 51 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/pmc/Kconfig b/src/soc/intel/common/block/pmc/Kconfig index c00e14c303..cfd12d8f3e 100644 --- a/src/soc/intel/common/block/pmc/Kconfig +++ b/src/soc/intel/common/block/pmc/Kconfig @@ -5,3 +5,28 @@ config SOC_INTEL_COMMON_BLOCK_PMC help Intel Processor common code for Power Management controller(PMC) subsystem + +choice + prompt "System Power State after Failure" + default POWER_STATE_ON_AFTER_FAILURE + +config POWER_STATE_OFF_AFTER_FAILURE + bool "S5 Soft Off" + help + Choose this option if you want to keep system into + S5 after reapplying power after failure + +config POWER_STATE_ON_AFTER_FAILURE + bool "S0 Full On" + help + Choose this option if you want to keep system into + S0 after reapplying power after failure + +config POWER_STATE_PREVIOUS_AFTER_FAILURE + bool "Keep Previous State" + help + Choose this option if you want to keep system into + same power state as before failure even after reapplying + power + +endchoice diff --git a/src/soc/intel/common/block/pmc/pmclib.c b/src/soc/intel/common/block/pmc/pmclib.c index f653bf08a1..dea7e1bc18 100644 --- a/src/soc/intel/common/block/pmc/pmclib.c +++ b/src/soc/intel/common/block/pmc/pmclib.c @@ -80,6 +80,18 @@ __attribute__ ((weak)) uint32_t soc_get_smi_status(uint32_t generic_sts) return generic_sts; } +/* + * Set PMC register to know which state system should be after + * power reapplied + */ +__attribute__ ((weak)) void pmc_soc_restore_power_failure(void) +{ + /* + * SoC code should set PMC config register in order to set + * MAINBOARD_POWER_ON bit as per EDS. + */ +} + static uint32_t pmc_reset_smi_status(void) { uint32_t smi_sts = inl(ACPI_BASE_ADDRESS + SMI_STS); @@ -590,3 +602,17 @@ void pmc_gpe_init(void) /* Set the routes in the GPIO communities as well. */ gpio_route_gpe(dw0, dw1, dw2); } + +/* + * 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) +{ + if (IS_ENABLED(CONFIG_POWER_STATE_PREVIOUS_AFTER_FAILURE)) + return MAINBOARD_POWER_STATE_PREVIOUS; + else if (IS_ENABLED(CONFIG_POWER_STATE_ON_AFTER_FAILURE)) + return MAINBOARD_POWER_STATE_ON; + + return MAINBOARD_POWER_STATE_OFF; +} |