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Diffstat (limited to 'src/arch/x86/acpi_s3.c')
-rw-r--r--src/arch/x86/acpi_s3.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/src/arch/x86/acpi_s3.c b/src/arch/x86/acpi_s3.c
index b6bee0d6a6..7855a2f28d 100644
--- a/src/arch/x86/acpi_s3.c
+++ b/src/arch/x86/acpi_s3.c
@@ -22,6 +22,8 @@
#include <romstage_handoff.h>
#include <rules.h>
+#if ENV_RAMSTAGE
+
/* This is filled with acpi_is_wakeup() call early in ramstage. */
int acpi_slp_type = -1;
@@ -75,6 +77,19 @@ void acpi_fail_wakeup(void)
if (acpi_slp_type == 3 || acpi_slp_type == 2)
acpi_slp_type = 0;
}
+#endif /* ENV_RAMSTAGE */
+
+void acpi_prepare_for_resume(void)
+{
+ if (!HIGH_MEMORY_SAVE)
+ return;
+
+ /* Back up the OS-controlled memory where ramstage will be loaded. */
+ void *src = (void *)CONFIG_RAMBASE;
+ void *dest = cbmem_find(CBMEM_ID_RESUME);
+ if (dest != NULL)
+ memcpy(dest, src, HIGH_MEMORY_SAVE);
+}
void acpi_prepare_resume_backup(void)
{