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);