1 files changed, 16 insertions, 0 deletions
diff --git a/src/soc/qualcomm/ipq40xx/cbmem.c b/src/soc/qualcomm/ipq40xx/cbmem.c
index 7aff231be7..05325cceb9 100644
--- a/src/soc/qualcomm/ipq40xx/cbmem.c
+++ b/src/soc/qualcomm/ipq40xx/cbmem.c
@@ -16,7 +16,23 @@
 #include <cbmem.h>
 #include <soc/soc_services.h>
 
+static int cbmem_backing_store_ready;
+
+void ipq_cbmem_backing_store_ready(void)
+{
+	cbmem_backing_store_ready = 1;
+}
+
 void *cbmem_top(void)
 {
+	/*
+	 * In romstage, make sure that cbmem backing store is ready before
+	 * returning pointer to cbmem top. Otherwise, it could lead to issues
+	 * with components that utilize cbmem in romstage (e.g. vboot_locator
+	 * for loading ipq blobs before DRAM is initialized).
+	 */
+	if (ENV_ROMSTAGE && (cbmem_backing_store_ready == 0))
+		return NULL;
+
 	return _memlayout_cbmem_top;
 }