2 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 7525e38c434d..e6b843e16e81 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -80,6 +80,7 @@ extern phys_addr_t __memblock_alloc_base(phys_addr_t size,
                                            phys_addr_t align,
                                            phys_addr_t max_addr);
 extern phys_addr_t memblock_phys_mem_size(void);
+extern phys_addr_t memblock_start_of_DRAM(void);
 extern phys_addr_t memblock_end_of_DRAM(void);
 extern void memblock_enforce_memory_limit(phys_addr_t memory_limit);
 extern int memblock_is_memory(phys_addr_t addr);
diff --git a/mm/memblock.c b/mm/memblock.c
index ccbf97339592..b7ed63633581 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -626,6 +626,12 @@ phys_addr_t __init memblock_phys_mem_size(void)
         return memblock.memory_size;
 }
 
+/* lowest address */
+phys_addr_t __init_memblock memblock_start_of_DRAM(void)
+{
+        return memblock.memory.regions[0].base;
+}
+
 phys_addr_t __init_memblock memblock_end_of_DRAM(void)
 {
         int idx = memblock.memory.cnt - 1;