diff --git a/arch/riscv/cpu/generic/dram.c b/arch/riscv/cpu/generic/dram.c
index 94d8018..1b51bae 100644
--- a/arch/riscv/cpu/generic/dram.c
+++ b/arch/riscv/cpu/generic/dram.c
@@ -20,19 +20,3 @@
 {
 	return fdtdec_setup_memory_banksize();
 }
-
-phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
-{
-	/*
-	 * Ensure that we run from first 4GB so that all
-	 * addresses used by U-Boot are 32bit addresses.
-	 *
-	 * This in-turn ensures that 32bit DMA capable
-	 * devices work fine because DMA mapping APIs will
-	 * provide 32bit DMA addresses only.
-	 */
-	if (gd->ram_top >= SZ_4G)
-		return SZ_4G - 1;
-
-	return gd->ram_top;
-}