limine/common/mm/pmm.h
2022-02-03 10:38:43 +01:00

63 lines
1.7 KiB
C

#ifndef __MM__PMM_H__
#define __MM__PMM_H__
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
#include <sys/e820.h>
#define MEMMAP_USABLE 1
#define MEMMAP_RESERVED 2
#define MEMMAP_ACPI_RECLAIMABLE 3
#define MEMMAP_ACPI_NVS 4
#define MEMMAP_BAD_MEMORY 5
#define MEMMAP_BOOTLOADER_RECLAIMABLE 0x1000
#define MEMMAP_KERNEL_AND_MODULES 0x1001
#define MEMMAP_FRAMEBUFFER 0x1002
#define MEMMAP_EFI_RECLAIMABLE 0x2000
#define MEMMAP_EFI_BOOTSERVICES 0x2001
struct meminfo {
size_t uppermem;
size_t lowermem;
};
struct meminfo mmap_get_info(size_t mmap_count, struct e820_entry_t *mmap);
#if bios == 1
extern struct e820_entry_t memmap[];
extern size_t memmap_entries;
#endif
#if uefi == 1
extern struct e820_entry_t *memmap;
extern size_t memmap_entries;
extern struct e820_entry_t *untouched_memmap;
extern size_t untouched_memmap_entries;
#endif
extern bool allocations_disallowed;
void init_memmap(void);
struct e820_entry_t *get_memmap(size_t *entries);
struct e820_entry_t *get_raw_memmap(size_t *entry_count);
void print_memmap(struct e820_entry_t *mm, size_t size);
bool memmap_alloc_range(uint64_t base, uint64_t length, uint32_t type, bool free_only, bool panic, bool simulation, bool new_entry);
void pmm_randomise_memory(void);
void *ext_mem_alloc(size_t count);
void *ext_mem_alloc_type(size_t count, uint32_t type);
void *ext_mem_alloc_type_aligned(size_t count, uint32_t type, size_t alignment);
void *conv_mem_alloc(size_t count);
void pmm_free(void *ptr, size_t length);
#if uefi == 1
void pmm_reclaim_uefi_mem(void);
void pmm_release_uefi_mem(void);
#endif
#endif