diff --git a/src/soc/sifive/fu540/memlayout.ld b/src/soc/sifive/fu540/memlayout.ld
index 8fc875d..50af4f4 100644
--- a/src/soc/sifive/fu540/memlayout.ld
+++ b/src/soc/sifive/fu540/memlayout.ld
@@ -21,8 +21,8 @@
 	L2LIM_END(FU540_L2LIM + 2M)
 
 	DRAM_START(FU540_DRAM)
-	REGION(opensbi, FU540_DRAM, 128K, 4K)
-	RAMSTAGE(FU540_DRAM + 128K, 2M)
-	MEM_STACK(FU540_DRAM + 128K + 2M, 20K)
+	OPENSBI(FU540_DRAM, 256K)
+	RAMSTAGE(FU540_DRAM + 256K, 2M)
+	MEM_STACK(FU540_DRAM + 256K + 2M, 20K)
 	POSTRAM_CBFS_CACHE(FU540_DRAM + 3M, 29M)
 }