diff --git a/src/include/memlayout.h b/src/include/memlayout.h
index 6280b200eb..07addbbcde 100644
--- a/src/include/memlayout.h
+++ b/src/include/memlayout.h
@@ -60,6 +60,8 @@
 #define SRAM_END(addr) REGION_END(sram, addr)
 
 #define DRAM_START(addr) REGION_START(dram, addr)
+/* This should rarely be used because DRAM-size is usually not compile-time constant. */
+#define DRAM_END(addr) REGION_END(dram, addr)
 
 #define TIMESTAMP(addr, size) \
 	REGION(timestamp, addr, size, 8) \
diff --git a/src/include/symbols.h b/src/include/symbols.h
index 36e4c109cf..48ff832afd 100644
--- a/src/include/symbols.h
+++ b/src/include/symbols.h
@@ -5,8 +5,6 @@
 
 #include <types.h>
 
-extern u8 _dram[];
-
 #define REGION_SIZE(name) ((size_t)_##name##_size)
 
 #define DECLARE_REGION(name)	\
@@ -28,6 +26,7 @@ extern u8 _dram[];
 	__maybe_unused __weak extern u8 _##name##_size[];
 
 DECLARE_REGION(sram)
+DECLARE_OPTIONAL_REGION(dram)
 DECLARE_OPTIONAL_REGION(timestamp)
 DECLARE_REGION(preram_cbmem_console)
 DECLARE_REGION(cbmem_init_hooks)