[mirror_qemu.git] / hw / i386 / e820_memory_layout.h

/*
 * QEMU BIOS e820 routines
 *
 * Copyright (c) 2003-2004 Fabrice Bellard
 *
 * SPDX-License-Identifier: MIT
 */

#ifndef HW_I386_E820_H
#define HW_I386_E820_H

/* e820 types */
#define E820_RAM        1
#define E820_RESERVED   2
#define E820_ACPI       3
#define E820_NVS        4
#define E820_UNUSABLE   5

#define E820_NR_ENTRIES 16

struct e820_entry {
    uint64_t address;
    uint64_t length;
    uint32_t type;
} QEMU_PACKED __attribute((__aligned__(4)));

struct e820_table {
    uint32_t count;
    struct e820_entry entry[E820_NR_ENTRIES];
} QEMU_PACKED __attribute((__aligned__(4)));

extern struct e820_table e820_reserve;
extern struct e820_entry *e820_table;

int e820_add_entry(uint64_t address, uint64_t length, uint32_t type);
int e820_get_num_entries(void);
bool e820_get_entry(int index, uint32_t type,
                    uint64_t *address, uint64_t *length);


#endif
Commit	Line	Data
d6d059ca PMD	1	/*
	2	* QEMU BIOS e820 routines
	3	*
	4	* Copyright (c) 2003-2004 Fabrice Bellard
	5	*
	6	* SPDX-License-Identifier: MIT
	7	*/
	8
	9	#ifndef HW_I386_E820_H
	10	#define HW_I386_E820_H
	11
	12	/* e820 types */
	13	#define E820_RAM 1
	14	#define E820_RESERVED 2
	15	#define E820_ACPI 3
	16	#define E820_NVS 4
	17	#define E820_UNUSABLE 5
	18
	19	#define E820_NR_ENTRIES 16
	20
	21	struct e820_entry {
	22	uint64_t address;
	23	uint64_t length;
	24	uint32_t type;
	25	} QEMU_PACKED __attribute((__aligned__(4)));
	26
	27	struct e820_table {
	28	uint32_t count;
	29	struct e820_entry entry[E820_NR_ENTRIES];
	30	} QEMU_PACKED __attribute((__aligned__(4)));
	31
	32	extern struct e820_table e820_reserve;
	33	extern struct e820_entry *e820_table;
	34
	35	int e820_add_entry(uint64_t address, uint64_t length, uint32_t type);
	36	int e820_get_num_entries(void);
	37	bool e820_get_entry(int index, uint32_t type,
	38	uint64_t address, uint64_t length);
	39
	40
	41
	42	#endif