blob: 1ab709abfc8dee877374a2edddfd99e2d0d236cd [file] [log] [blame]
#ifndef _ASM_X86_E820_H
#define _ASM_X86_E820_H
#define E820MAX 128 /* number of entries in E820MAP */
#define E820_RAM 1
#define E820_RESERVED 2
#define E820_ACPI 3
#define E820_NVS 4
#define E820_UNUSABLE 5
#define E820_COUNT 6 /* Number of types */
#ifndef __ASSEMBLY__
#include <linux/types.h>
struct e820_entry {
__u64 addr; /* start of memory segment */
__u64 size; /* size of memory segment */
__u32 type; /* type of memory segment */
} __attribute__((packed));
#define ISA_START_ADDRESS 0xa0000
#define ISA_END_ADDRESS 0x100000
/* Implementation-defined function to install an e820 map */
unsigned int install_e820_map(unsigned int max_entries,
struct e820_entry *);
/**
* cb_install_e820_map() - Install e820 map provided by coreboot sysinfo
*
* This should be used when booting from coreboot, since in that case the
* memory areas are provided by coreboot in its sysinfo.
*
* @max_entries: Maximum number of entries to write
* @entries: Place to put entires
* Return: number of entries written
*/
unsigned int cb_install_e820_map(unsigned int max_entries,
struct e820_entry *entries);
#endif /* __ASSEMBLY__ */
#endif /* _ASM_X86_E820_H */