diff options
Diffstat (limited to 'src/arch/x86/boot/acpi.c')
| -rw-r--r-- | src/arch/x86/boot/acpi.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/src/arch/x86/boot/acpi.c b/src/arch/x86/boot/acpi.c index 621df2f72f..fb902dbfa2 100644 --- a/src/arch/x86/boot/acpi.c +++ b/src/arch/x86/boot/acpi.c @@ -36,6 +36,7 @@ #if CONFIG_COLLECT_TIMESTAMPS #include <timestamp.h> #endif +#include <romstage_handoff.h> /* FIXME: Kconfig doesn't support overridable defaults :-( */ #ifndef CONFIG_HPET_MIN_TICKS @@ -857,10 +858,25 @@ void acpi_resume(void *wake_vec) /* This is filled with acpi_is_wakeup() call early in ramstage. */ int acpi_slp_type = -1; -int __attribute__((weak)) acpi_get_sleep_type(void) +#if IS_ENABLED(CONFIG_EARLY_CBMEM_INIT) +int acpi_get_sleep_type(void) { - return 0; + struct romstage_handoff *handoff; + + handoff = cbmem_find(CBMEM_ID_ROMSTAGE_INFO); + + if (handoff == NULL) { + printk(BIOS_DEBUG, "Unknown boot method, assuming normal.\n"); + return 0; + } else if (handoff->s3_resume) { + printk(BIOS_DEBUG, "S3 Resume.\n"); + return 3; + } else { + printk(BIOS_DEBUG, "Normal boot.\n"); + return 0; + } } +#endif static void acpi_handoff_wakeup(void) { |