4 #include "types.h" // u64
7 #define E820_RESERVED 2
10 #define E820_UNUSABLE 5
11 #define E820_HOLE ((u32)-1) // Useful for removing entries
19 void add_e820(u64 start, u64 size, u32 type);
20 void memmap_setup(void);
21 void memmap_finalize(void);
23 // A typical OS page size
24 #define PAGE_SIZE 4096
26 // e820 map storage (defined in system.c)
27 extern struct e820entry e820_list[];
28 extern int e820_count;
30 // Space for exported bios tables (defined in misc.c)
31 extern char BiosTableSpace[];