path: root/include/linux/efi.h

#ifndef _LINUX_EFI_H
#define _LINUX_EFI_H

/*
 * Extensible Firmware Interface
 * Based on 'Extensible Firmware Interface Specification' version 0.9, April 30, 1999
 *
 * Copyright (C) 1999 VA Linux Systems
 * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
 * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co.
 *	David Mosberger-Tang <davidm@hpl.hp.com>
 *	Stephane Eranian <eranian@hpl.hp.com>
 */
#include <linux/init.h>
#include <linux/string.h>
#include <linux/time.h>
#include <linux/types.h>
#include <linux/proc_fs.h>
#include <linux/rtc.h>
#include <linux/ioport.h>
#include <linux/pfn.h>
#include <linux/pstore.h>
#include <linux/range.h>
#include <linux/reboot.h>
#include <linux/uuid.h>
#include <linux/screen_info.h>

#include <asm/page.h>

#define EFI_SUCCESS		0
#define EFI_LOAD_ERROR          ( 1 | (1UL << (BITS_PER_LONG-1)))
#define EFI_INVALID_PARAMETER	( 2 | (1UL << (BITS_PER_LONG-1)))
#define EFI_UNSUPPORTED		( 3 | (1UL << (BITS_PER_LONG-1)))
#define EFI_BAD_BUFFER_SIZE     ( 4 | (1UL << (BITS_PER_LONG-1)))
#define EFI_BUFFER_TOO_SMALL	( 5 | (1UL << (BITS_PER_LONG-1)))
#define EFI_NOT_READY		( 6 | (1UL << (BITS_PER_LONG-1)))
#define EFI_DEVICE_ERROR	( 7 | (1UL << (BITS_PER_LONG-1)))
#define EFI_WRITE_PROTECTED	( 8 | (1UL << (BITS_PER_LONG-1)))
#define EFI_OUT_OF_RESOURCES	( 9 | (1UL << (BITS_PER_LONG-1)))
#define EFI_NOT_FOUND		(14 | (1UL << (BITS_PER_LONG-1)))
#define EFI_ABORTED		(21 | (1UL << (BITS_PER_LONG-1)))
#define EFI_SECURITY_VIOLATION	(26 | (1UL << (BITS_PER_LONG-1)))

typedef unsigned long efi_status_t;
typedef u8 efi_bool_t;
typedef u16 efi_char16_t;		/* UNICODE character */
typedef u64 efi_physical_addr_t;
typedef void *efi_handle_t;

typedef guid_t efi_guid_t;

#define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
	GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)

/*
 * Generic EFI table header
 */
typedef	struct {
	u64 signature;
	u32 revision;
	u32 headersize;
	u32 crc32;
	u32 reserved;
} efi_table_hdr_t;

/*
 * Memory map descriptor:
 */

/* Memory types: */
#define EFI_RESERVED_TYPE		 0
#define EFI_LOADER_CODE			 1
#define EFI_LOADER_DATA			 2
#define EFI_BOOT_SERVICES_CODE		 3
#define EFI_BOOT_SERVICES_DATA		 4
#define EFI_RUNTIME_SERVICES_CODE	 5
#define EFI_RUNTIME_SERVICES_DATA	 6
#define EFI_CONVENTIONAL_MEMORY		 7
#define EFI_UNUSABLE_MEMORY		 8
#define EFI_ACPI_RECLAIM_MEMORY		 9
#define EFI_ACPI_MEMORY_NVS		10
#define EFI_MEMORY_MAPPED_IO		11
#define EFI_MEMORY_MAPPED_IO_PORT_SPACE	12
#define EFI_PAL_CODE			13
#define EFI_PERSISTENT_MEMORY		14
#define EFI_MAX_MEMORY_TYPE		15

/* Attribute values: */
#define EFI_MEMORY_UC		((u64)0x0000000000000001ULL)	/* uncached */
#define EFI_MEMORY_WC		((u64)0x0000000000000002ULL)	/* write-coalescing */
#define EFI_MEMORY_WT		((u64)0x0000000000000004ULL)	/* write-through */
#define EFI_MEMORY_WB		((u64)0x0000000000000008ULL)	/* write-back */
#define EFI_MEMORY_UCE		((u64)0x0000000000000010ULL)	/* uncached, exported */
#define EFI_MEMORY_WP		((u64)0x0000000000001000ULL)	/* write-protect */
#define EFI_MEMORY_RP		((u64)0x0000000000002000ULL)	/* read-protect */
#define EFI_MEMORY_XP		((u64)0x0000000000004000ULL)	/* execute-protect */
#define EFI_MEMORY_NV		((u64)0x0000000000008000ULL)	/* non-volatile */
#define EFI_MEMORY_MORE_RELIABLE \
				((u64)0x0000000000010000ULL)	/* higher reliability */
#define EFI_MEMORY_RO		((u64)0x0000000000020000ULL)	/* read-only */
#define EFI_MEMORY_RUNTIME	((u64)0x8000000000000000ULL)	/* range requires runtime mapping */
#define EFI_MEMORY_DESCRIPTOR_VERSION	1

#define EFI_PAGE_SHIFT		12
#define EFI_PAGE_SIZE		(1UL << EFI_PAGE_SHIFT)
#define EFI_PAGES_MAX		(U64_MAX >> EFI_PAGE_SHIFT)

typedef struct {
	u32 type;
	u32 pad;
	u64 phys_addr;
	u64 virt_addr;
	u64 num_pages;
	u64 attribute;
} efi_memory_desc_t;

typedef struct {
	efi_guid_t guid;
	u32 headersize;
	u32 flags;
	u32 imagesize;
} efi_capsule_header_t;

struct efi_boot_memmap {
	efi_memory_desc_t	**map;
	unsigned long		*map_size;
	unsigned long		*desc_size;
	u32			*desc_ver;
	unsigned long		*key_ptr;
	unsigned long		*buff_size;
};

/*
 * EFI capsule flags
 */
#define EFI_CAPSULE_PERSIST_ACROSS_RESET	0x00010000
#define EFI_CAPSULE_POPULATE_SYSTEM_TABLE	0x00020000
#define EFI_CAPSULE_INITIATE_RESET		0x00040000

struct capsule_info {
	efi_capsule_header_t	header;
	int			reset_type;
	long			index;
	size_t			count;
	size_t			total_size;
	phys_addr_t		*pages;
	size_t			page_bytes_remain;
};

int __efi_capsule_setup_info(struct capsule_info *cap_info);

/*
 * Allocation types for calls to boottime->allocate_pages.
 */
#define EFI_ALLOCATE_ANY_PAGES		0
#define EFI_ALLOCATE_MAX_ADDRESS	1
#define EFI_ALLOCATE_ADDRESS		2
#define EFI_MAX_ALLOCATE_TYPE		3

typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg);

/*
 * Types and defines for Time Services
 */
#define EFI_TIME_ADJUST_DAYLIGHT 0x1
#define EFI_TIME_IN_DAYLIGHT     0x2
#define EFI_UNSPECIFIED_TIMEZONE 0x07ff

typedef struct {
	u16 year;
	u8 month;
	u8 day;
	u8 hour;
	u8 minute;
	u8 second;
	u8 pad1;
	u32 nanosecond;
	s16 timezone;
	u8 daylight;
	u8 pad2;
} efi_time_t;

typedef struct {
	u32 resolution;
	u32 accuracy;
	u8 sets_to_zero;
} efi_time_cap_t;

typedef struct {
	efi_table_hdr_t hdr;
	u32 raise_tpl;
	u32 restore_tpl;
	u32 allocate_pages;
	u32 free_pages;
	u32 get_memory_map;
	u32 allocate_pool;
	u32 free_pool;
	u32 create_event;
	u32 set_timer;
	u32 wait_for_event;
	u32 signal_event;
	u32 close_event;
	u32 check_event;
	u32 install_protocol_interface;
	u32 reinstall_protocol_interface;
	u32 uninstall_protocol_interface;
	u32 handle_protocol;
	u32 __reserved;
	u32 register_protocol_notify;
	u32 locate_handle;
	u32 locate_device_path;
	u32 install_configuration_table;
	u32 load_image;
	u32 start_image;
	u32 exit;
	u32 unload_image;
	u32 exit_boot_services;
	u32 get_next_monotonic_count;
	u32 stall;
	u32 set_watchdog_timer;
	u32 connect_controller;
	u32 disconnect_controller;
	u32 open_protocol;
	u32 close_protocol;
	u32 open_protocol_information;
	u32 protocols_per_handle;
	u32 locate_handle_buffer;
	u32 locate_protocol;
	u32 install_multiple_protocol_interfaces;
	u32 uninstall_multiple_protocol_interfaces;
	u32 calculate_crc32;
	u32 copy_m