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-rw-r--r--src/soc/intel/apollolake/chip.c3
-rw-r--r--src/soc/intel/common/vbt.c20
-rw-r--r--src/soc/intel/common/vbt.h5
3 files changed, 26 insertions, 2 deletions
diff --git a/src/soc/intel/apollolake/chip.c b/src/soc/intel/apollolake/chip.c
index 544cd133c8..10b71fbc8d 100644
--- a/src/soc/intel/apollolake/chip.c
+++ b/src/soc/intel/apollolake/chip.c
@@ -194,8 +194,7 @@ static void soc_init(void *data)
struct global_nvs_t *gnvs;
/* Save VBT info and mapping */
- if (locate_vbt(&vbt_rdev) != CB_ERR)
- vbt = rdev_mmap_full(&vbt_rdev);
+ vbt = vbt_get(&vbt_rdev);
/* Snapshot the current GPIO IRQ polarities. FSP is setting a
* default policy that doesn't honor boards' requirements. */
diff --git a/src/soc/intel/common/vbt.c b/src/soc/intel/common/vbt.c
index 80b17a2f87..d9bb98a8d1 100644
--- a/src/soc/intel/common/vbt.c
+++ b/src/soc/intel/common/vbt.c
@@ -15,6 +15,8 @@
#include <cbfs.h>
#include <console/console.h>
+#include <arch/acpi.h>
+#include <bootmode.h>
#include "vbt.h"
@@ -40,3 +42,21 @@ enum cb_err locate_vbt(struct region_device *rdev)
return CB_SUCCESS;
}
+
+void *vbt_get(struct region_device *rdev)
+{
+ void *vbt_data;
+
+ /* Normal mode and S3 resume path PEIM GFX init is not needed.
+ * Passing NULL as VBT will not make PEIM GFX to execute. */
+ if (acpi_is_wakeup_s3())
+ return NULL;
+ if (!display_init_required())
+ return NULL;
+ if (locate_vbt(rdev) != CB_ERR) {
+ vbt_data = rdev_mmap_full(rdev);
+ return vbt_data;
+ } else {
+ return NULL;
+ }
+}
diff --git a/src/soc/intel/common/vbt.h b/src/soc/intel/common/vbt.h
index e1a45cc887..9a02e6a467 100644
--- a/src/soc/intel/common/vbt.h
+++ b/src/soc/intel/common/vbt.h
@@ -21,4 +21,9 @@
/* locate .vbt file */
enum cb_err locate_vbt(struct region_device *rdev);
+/*
+ * Returns VBT pointer and mapping after checking prerequisites for Pre OS
+ * Graphics initialization
+ */
+void *vbt_get(struct region_device *rdev);
#endif