diff --git a/src/arch/arm/include/arch/memlayout.h b/src/arch/arm/include/arch/memlayout.h
index 408443f1ba..991cbb78c6 100644
--- a/src/arch/arm/include/arch/memlayout.h
+++ b/src/arch/arm/include/arch/memlayout.h
@@ -22,11 +22,6 @@
 	REGION(stack, addr, size, 8) \
 	_ = ASSERT(size >= 2K, "stack should be >= 2K, see toolchain.mk");
 
-#define DMA_COHERENT(addr, size) \
-	REGION(dma_coherent, addr, size, SUPERPAGE_SIZE) \
-	_ = ASSERT(size % SUPERPAGE_SIZE == 0, \
-		"DMA coherency buffer must fit exactly in full superpages!");
-
 #define FRAMEBUFFER(addr, size) \
 	REGION(framebuffer, addr, size, SUPERPAGE_SIZE) \
 	_ = ASSERT(size % SUPERPAGE_SIZE == 0, \
diff --git a/src/arch/arm64/include/arch/memlayout.h b/src/arch/arm64/include/arch/memlayout.h
index 69e4731a12..5c648b36f0 100644
--- a/src/arch/arm64/include/arch/memlayout.h
+++ b/src/arch/arm64/include/arch/memlayout.h
@@ -9,11 +9,6 @@
 	REGION(ttb, addr, size, 4K) \
 	_ = ASSERT(size % 4K == 0, "TTB size must be divisible by 4K!");
 
-#define DMA_COHERENT(addr, size) \
-	REGION(dma_coherent, addr, size, 4K) \
-	_ = ASSERT(size % 4K == 0, \
-		"DMA buffer should be multiple of smallest page size (4K)!");
-
 #define FRAMEBUFFER(addr, size) \
 	REGION(framebuffer, addr, size, 1M) \
 	_ = ASSERT(size % 1M == 0, \
diff --git a/src/include/memlayout.h b/src/include/memlayout.h
index 07addbbcde..85f2959434 100644
--- a/src/include/memlayout.h
+++ b/src/include/memlayout.h
@@ -101,6 +101,32 @@
 		ALIAS_REGION(postram_cbfs_cache, cbfs_cache)
 #endif
 
+/* Use either DMA_COHERENT (unified) or both (PRERAM|POSTRAM)_DMA_COHERENT */
+#define DMA_COHERENT(addr, size) \
+	REGION(dma_coherent, addr, size, 4K) \
+	_ = ASSERT(size % 4K == 0, \
+		"DMA buffer should be multiple of smallest page size (4K)!"); \
+	ALIAS_REGION(dma_coherent, preram_dma_coherent) \
+	ALIAS_REGION(dma_coherent, postram_dma_coherent)
+
+#if ENV_ROMSTAGE_OR_BEFORE
+	#define PRERAM_DMA_COHERENT(addr, size) \
+		REGION(preram_dma_coherent, addr, size, 4K) \
+		_ = ASSERT(size % 4K == 0, \
+		"Pre-RAM DMA buffer should be multiple of smallest page size (4K)!"); \
+		ALIAS_REGION(preram_dma_coherent, dma_coherent)
+	#define POSTRAM_DMA_COHERENT(addr, size) \
+		REGION(postram_dma_coherent, addr, size, 4K)
+#else
+	#define PRERAM_DMA_COHERENT(addr, size) \
+		REGION(preram_dma_coherent, addr, size, 4K)
+	#define POSTRAM_DMA_COHERENT(addr, size) \
+		REGION(postram_dma_coherent, addr, size, 4K) \
+		_ = ASSERT(size % 4K == 0, \
+		"Post-RAM DMA buffer should be multiple of smallest page size (4K)!"); \
+		ALIAS_REGION(postram_dma_coherent, dma_coherent)
+#endif
+
 /* Careful: 'INCLUDE <filename>' must always be at the end of the output line */
 #if ENV_DECOMPRESSOR
 	#define DECOMPRESSOR(addr, sz) \
diff --git a/src/include/symbols.h b/src/include/symbols.h
index ad8231c089..c46b6ff9ef 100644
--- a/src/include/symbols.h
+++ b/src/include/symbols.h
@@ -73,6 +73,8 @@ DECLARE_REGION(ramstage)
 DECLARE_REGION(pagetables)
 DECLARE_REGION(ttb)
 DECLARE_OPTIONAL_REGION(ttb_subtables)
+DECLARE_OPTIONAL_REGION(preram_dma_coherent)
+DECLARE_OPTIONAL_REGION(postram_dma_coherent)
 DECLARE_REGION(dma_coherent)
 DECLARE_REGION(soc_registers)
 DECLARE_OPTIONAL_REGION(framebuffer)