diff --git a/arch/microblaze/include/asm/system.h b/arch/microblaze/include/asm/system.h
index 3107748d3b..050a8b4076 100644
--- a/arch/microblaze/include/asm/system.h
+++ b/arch/microblaze/include/asm/system.h
@@ -23,6 +23,8 @@
 #endif
 #include <asm/ptrace.h>
 
+#define MMU_SECTION_SIZE	(1 * 1024 * 1024)
+
 #define prepare_to_switch()	do { } while (0)
 
 /*
diff --git a/board/xilinx/microblaze-generic/microblaze-generic.c b/board/xilinx/microblaze-generic/microblaze-generic.c
index a427ac94a1..f58ecd1590 100644
--- a/board/xilinx/microblaze-generic/microblaze-generic.c
+++ b/board/xilinx/microblaze-generic/microblaze-generic.c
@@ -14,6 +14,8 @@
 #include <config.h>
 #include <env.h>
 #include <init.h>
+#include <image.h>
+#include <lmb.h>
 #include <log.h>
 #include <asm/global_data.h>
 #include <dm/lists.h>
@@ -36,6 +38,25 @@ int dram_init(void)
 	return 0;
 };
 
+ulong board_get_usable_ram_top(ulong total_size)
+{
+	phys_size_t size;
+	phys_addr_t reg;
+	struct lmb lmb;
+
+	/* found enough not-reserved memory to relocated U-Boot */
+	lmb_init(&lmb);
+	lmb_add(&lmb, gd->ram_base, gd->ram_size);
+	boot_fdt_add_mem_rsv_regions(&lmb, (void *)gd->fdt_blob);
+	size = ALIGN(CONFIG_SYS_MALLOC_LEN + total_size, MMU_SECTION_SIZE);
+	reg = lmb_alloc(&lmb, size, MMU_SECTION_SIZE);
+
+	if (!reg)
+		reg = gd->ram_top - size;
+
+	return reg + size;
+}
+
 int board_late_init(void)
 {
 	ulong max_size;