A update

include/mm/pmm.h

@@ -0,0 +1,11 @@
+#ifndef _PMM_H
+#define _PMM_H
+
+#include <stdint.h>
+#include <multiboot.h>
+
+void pmm_init(multiboot_info_t* mb_info);
+void* alloc_page(void);
+void free_page(void* ptr);
+
+#endif