📄 e820.h
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#ifndef __E820_HEADER#define __E820_HEADER/* * PC BIOS standard E820 types and structure. */#define E820_RAM 1#define E820_RESERVED 2#define E820_ACPI 3#define E820_NVS 4#define E820_UNUSABLE 5struct e820entry { uint64_t addr; uint64_t size; uint32_t type;} __attribute__((packed));#define E820MAX 128struct e820map { int nr_map; struct e820entry map[E820MAX];};extern int reserve_e820_ram(struct e820map *e820, uint64_t s, uint64_t e);extern unsigned long init_e820(const char *, struct e820entry *, int *);extern struct e820map e820;/* These symbols live in the boot trampoline. */extern struct e820entry e820map[];extern int e820nr;extern unsigned int lowmem_kb, highmem_kb;#define e820_raw bootsym(e820map)#define e820_raw_nr bootsym(e820nr)#endif /*__E820_HEADER*/
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