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| author | Subrata Banik <subrata.banik@intel.com> | 2017-09-06 18:38:39 +0530 |
|---|---|---|
| committer | Subrata Banik <subrata.banik@intel.com> | 2017-09-08 01:15:47 +0000 |
| commit | 534b23639bd1ee82e752f0a8593e46c1d03d8d2c (patch) | |
| tree | b76d94ad2f93d9d2b0d7de8d0d433252f958196d /src/soc/intel/skylake | |
| parent | 6dc148a42b9ae719521caff43556d60cf8ef7ca6 (diff) | |
| download | coreboot-534b23639bd1ee82e752f0a8593e46c1d03d8d2c.tar.xz | |
soc/intel/skylake: Create acpi_get_sleep_type() to get previous sleep state
This patch implements soc function to get previous sleep state
using chipset_power_state global structure.
acpi_get_sleep_type is needed in PRE_RAM stage when soc selects
CONFIG_EARLY_EBDA_INIT kconfig option.
Change-Id: I79acbfc09c8d255fbf9d73e49e8c7764f3f3fac6
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/21423
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Diffstat (limited to 'src/soc/intel/skylake')
| -rw-r--r-- | src/soc/intel/skylake/romstage/power_state.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/src/soc/intel/skylake/romstage/power_state.c b/src/soc/intel/skylake/romstage/power_state.c index 61851a587d..19f43c3a93 100644 --- a/src/soc/intel/skylake/romstage/power_state.c +++ b/src/soc/intel/skylake/romstage/power_state.c @@ -14,6 +14,7 @@ * GNU General Public License for more details. */ +#include <arch/acpi.h> #include <arch/early_variables.h> #include <arch/io.h> #include <cbmem.h> @@ -35,12 +36,17 @@ static struct chipset_power_state power_state CAR_GLOBAL; +static struct chipset_power_state *get_power_state(void) +{ + return car_get_var_ptr(&power_state); +} + static void migrate_power_state(int is_recovery) { struct chipset_power_state *ps_cbmem; struct chipset_power_state *ps_car; - ps_car = car_get_var_ptr(&power_state); + ps_car = get_power_state(); ps_cbmem = cbmem_add(CBMEM_ID_POWER_STATE, sizeof(*ps_cbmem)); if (ps_cbmem == NULL) { @@ -129,7 +135,7 @@ struct chipset_power_state *fill_power_state(void) { uint16_t tcobase; uint8_t *pmc; - struct chipset_power_state *ps = car_get_var_ptr(&power_state); + struct chipset_power_state *ps = get_power_state(); tcobase = smbus_tco_regs(); @@ -161,6 +167,14 @@ struct chipset_power_state *fill_power_state(void) return ps; } +int acpi_get_sleep_type(void) +{ + struct chipset_power_state *ps; + + ps = get_power_state(); + return ps->prev_sleep_state; +} + int vboot_platform_is_resuming(void) { return acpi_sleep_from_pm1(inl(ACPI_BASE_ADDRESS + PM1_CNT)) == ACPI_S3; |