diff options
Diffstat (limited to 'src/acpi')
| -rw-r--r-- | src/acpi/Makefile.inc | 3 | ||||
| -rw-r--r-- | src/acpi/acpi_pm.c | 31 |
2 files changed, 34 insertions, 0 deletions
diff --git a/src/acpi/Makefile.inc b/src/acpi/Makefile.inc index f70b23ff5b..2f06be1a2c 100644 --- a/src/acpi/Makefile.inc +++ b/src/acpi/Makefile.inc @@ -3,6 +3,7 @@ ifeq ($(CONFIG_HAVE_ACPI_TABLES),y) ramstage-y += acpi.c +ramstage-y += acpi_pm.c ramstage-y += acpigen.c ramstage-y += acpigen_dptf.c ramstage-y += acpigen_dsm.c @@ -15,6 +16,8 @@ ramstage-y += pld.c ramstage-y += sata.c ramstage-y += soundwire.c +postcar-y += acpi_pm.c + ifneq ($(wildcard src/mainboard/$(MAINBOARDDIR)/acpi_tables.c),) ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/acpi_tables.c endif diff --git a/src/acpi/acpi_pm.c b/src/acpi/acpi_pm.c new file mode 100644 index 0000000000..cecf878910 --- /dev/null +++ b/src/acpi/acpi_pm.c @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <acpi/acpi.h> +#include <console/console.h> +#include <romstage_handoff.h> + +/* This is filled with acpi_handoff_wakeup_s3() call early in ramstage. */ +static int acpi_slp_type = -1; + +static void acpi_handoff_wakeup(void) +{ + if (acpi_slp_type < 0) { + if (romstage_handoff_is_resume()) { + printk(BIOS_DEBUG, "S3 Resume\n"); + acpi_slp_type = ACPI_S3; + } else { + printk(BIOS_DEBUG, "Normal boot\n"); + acpi_slp_type = ACPI_S0; + } + } +} + +int acpi_handoff_wakeup_s3(void) +{ + acpi_handoff_wakeup(); + return (acpi_slp_type == ACPI_S3); +} + +void __weak mainboard_suspend_resume(void) +{ +} |