diff --git a/common/board_r.c b/common/board_r.c
index e5f33f40643..8a19817fa39 100644
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -204,8 +204,7 @@ static int initr_malloc(void)
 	 */
 	start = gd->relocaddr - TOTAL_MALLOC_LEN;
 	gd_set_malloc_start(start);
-	mem_malloc_init((ulong)map_sysmem(start, TOTAL_MALLOC_LEN),
-			TOTAL_MALLOC_LEN);
+	mem_malloc_init(start, TOTAL_MALLOC_LEN);
 	return 0;
 }
 
diff --git a/common/dlmalloc.c b/common/dlmalloc.c
index 1ac7ce3f43c..cc4d3a0a028 100644
--- a/common/dlmalloc.c
+++ b/common/dlmalloc.c
@@ -16,6 +16,8 @@
 #include <asm/global_data.h>
 
 #include <malloc.h>
+#include <mapmem.h>
+#include <string.h>
 #include <asm/io.h>
 #include <valgrind/memcheck.h>
 
@@ -598,9 +600,9 @@ void *sbrk(ptrdiff_t increment)
 
 void mem_malloc_init(ulong start, ulong size)
 {
-	mem_malloc_start = start;
-	mem_malloc_end = start + size;
-	mem_malloc_brk = start;
+	mem_malloc_start = (ulong)map_sysmem(start, size);
+	mem_malloc_end = mem_malloc_start + size;
+	mem_malloc_brk = mem_malloc_start;
 
 #ifdef CONFIG_SYS_MALLOC_DEFAULT_TO_INIT
 	malloc_init();
diff --git a/common/spl/spl.c b/common/spl/spl.c
index 94657d00591..1ceb63daf31 100644
--- a/common/spl/spl.c
+++ b/common/spl/spl.c
@@ -678,9 +678,7 @@ void board_init_r(gd_t *dummy1, ulong dummy2)
 	spl_set_bd();
 
 	if (IS_ENABLED(CONFIG_SPL_SYS_MALLOC)) {
-		mem_malloc_init((ulong)map_sysmem(SPL_SYS_MALLOC_START,
-						  SPL_SYS_MALLOC_SIZE),
-				SPL_SYS_MALLOC_SIZE);
+		mem_malloc_init(SPL_SYS_MALLOC_START, SPL_SYS_MALLOC_SIZE);
 		gd->flags |= GD_FLG_FULL_MALLOC_INIT;
 	}
 	if (!(gd->flags & GD_FLG_SPL_INIT)) {
diff --git a/include/malloc.h b/include/malloc.h
index 07d3e90a855..9e0be482416 100644
--- a/include/malloc.h
+++ b/include/malloc.h
@@ -981,6 +981,14 @@ extern ulong mem_malloc_start;
 extern ulong mem_malloc_end;
 extern ulong mem_malloc_brk;
 
+/**
+ * mem_malloc_init() - Set up the malloc() pool
+ *
+ * Sets the region of memory to be used for all future calls to malloc(), etc.
+ *
+ * @start: Start address
+ * @size: Size in bytes
+ */
 void mem_malloc_init(ulong start, ulong size);
 
 #ifdef __cplusplus