diff --git a/src/arch/arm64/include/arch/memlayout.h b/src/arch/arm64/include/arch/memlayout.h
index d84e7714fc..5c938517be 100644
--- a/src/arch/arm64/include/arch/memlayout.h
+++ b/src/arch/arm64/include/arch/memlayout.h
@@ -9,6 +9,24 @@
 	REGION(ttb, addr, size, 4K) \
 	_ = ASSERT(size % 4K == 0, "TTB size must be divisible by 4K!");
 
+#if ENV_ROMSTAGE_OR_BEFORE
+	#define PRERAM_TTB(addr, size) \
+		REGION(preram_ttb, addr, size, 4K) \
+		_ = ASSERT(size % 4K == 0, "preram_ttb size must be divisible by 4K!"); \
+		ALIAS_REGION(preram_ttb, ttb)
+	#define POSTRAM_TTB(addr, size) \
+		REGION(postram_ttb, addr, size, 4K) \
+		_ = ASSERT(size >= _preram_ttb_size, "The postram_ttb size cannot be smaller than the preram_ttb size.");
+#else
+	#define PRERAM_TTB(addr, size) \
+		REGION(preram_ttb, addr, size, 4K)
+	#define POSTRAM_TTB(addr, size) \
+		REGION(postram_ttb, addr, size, 4K) \
+		_ = ASSERT(size % 4K == 0, "postram_ttb size must be divisible by 4K!"); \
+		_ = ASSERT(size >= _preram_ttb_size, "The postram_ttb size cannot be smaller than the preram_ttb size."); \
+		ALIAS_REGION(postram_ttb, ttb)
+#endif
+
 #define FRAMEBUFFER(addr, size) \
 	REGION(framebuffer, addr, size, 1M) \
 	_ = ASSERT(size % 1M == 0, \
diff --git a/src/include/symbols.h b/src/include/symbols.h
index 53dbfb94a3..b9bde838fc 100644
--- a/src/include/symbols.h
+++ b/src/include/symbols.h
@@ -74,6 +74,8 @@ DECLARE_REGION(ramstage)
 
 DECLARE_REGION(pagetables)
 DECLARE_REGION(ttb)
+DECLARE_OPTIONAL_REGION(preram_ttb)
+DECLARE_OPTIONAL_REGION(postram_ttb)
 DECLARE_OPTIONAL_REGION(ttb_subtables)
 DECLARE_OPTIONAL_REGION(preram_dma_coherent)
 DECLARE_OPTIONAL_REGION(postram_dma_coherent)