+
+extern int e820_all_mapped(unsigned long start, unsigned long end,
+ unsigned type);
+extern void find_max_pfn(void);
+extern void register_bootmem_low_pages(unsigned long max_low_pfn);
+extern void e820_register_memory(void);
+extern void limit_regions(unsigned long long size);
+extern void print_memory_map(char *who);
+