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#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 <asm/page.h>

#include <asm/system.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_FOUND           (14 | (1UL << (BITS_PER_LONG-1)))

typedef unsigned long efi_status_t;

typedef u8 efi_bool_t;

typedef u16 efi_char16_t;               /* UNICODE character */

typedef struct {

        u8 b[16];

} efi_guid_t;

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

((efi_guid_t) \

{{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \

  (b) & 0xff, ((b) >> 8) & 0xff, \

  (c) & 0xff, ((c) >> 8) & 0xff, \

  (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_MAX_MEMORY_TYPE             14

/* Attribute values: */

#define EFI_MEMORY_UC           0x0000000000000001      /* uncached */

#define EFI_MEMORY_WC           0x0000000000000002      /* write-coalescing */

#define EFI_MEMORY_WT           0x0000000000000004      /* write-through */

#define EFI_MEMORY_WB           0x0000000000000008      /* write-back */

#define EFI_MEMORY_WP           0x0000000000001000      /* write-protect */

#define EFI_MEMORY_RP           0x0000000000002000      /* read-protect */

#define EFI_MEMORY_XP           0x0000000000004000      /* execute-protect */

#define EFI_MEMORY_RUNTIME      0x8000000000000000      /* range requires runtime mapping */

#define EFI_MEMORY_DESCRIPTOR_VERSION   1

#define EFI_PAGE_SHIFT          12

typedef struct {

        u32 type;

        u32 pad;

        u64 phys_addr;

        u64 virt_addr;

        u64 num_pages;

        u64 attribute;

} efi_memory_desc_t;

typedef int efi_freemem_callback_t (unsigned long start, unsigned long 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;

/*

 * Types and defines for EFI ResetSystem

 */

#define EFI_RESET_COLD 0

#define EFI_RESET_WARM 1

/*

 * EFI Runtime Services table

 */

#define EFI_RUNTIME_SERVICES_SIGNATURE 0x5652453544e5552

#define EFI_RUNTIME_SERVICES_REVISION  0x00010000

typedef struct {

        efi_table_hdr_t hdr;

        unsigned long get_time;

        unsigned long set_time;

        unsigned long get_wakeup_time;

        unsigned long set_wakeup_time;

        unsigned long set_virtual_address_map;

        unsigned long convert_pointer;

        unsigned long get_variable;

        unsigned long get_next_variable;

        unsigned long set_variable;

        unsigned long get_next_high_mono_count;

        unsigned long reset_system;

} efi_runtime_services_t;

typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc);

typedef efi_status_t efi_set_time_t (efi_time_t *tm);

typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending,

                                            efi_time_t *tm);

typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm);

typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr,

                                         unsigned long *data_size, void *data);

typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name,

                                              efi_guid_t *vendor);

typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor,

                                         unsigned long attr, unsigned long data_size,

                                         void *data);

typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count);

typedef void efi_reset_system_t (int reset_type, efi_status_t status,

                                 unsigned long data_size, efi_char16_t *data);

/*

 *  EFI Configuration Table and GUID definitions

 */

#define NULL_GUID \

    EFI_GUID(  0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 )

#define MPS_TABLE_GUID    \

    EFI_GUID(  0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )

#define ACPI_TABLE_GUID    \

    EFI_GUID(  0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )

#define ACPI_20_TABLE_GUID    \

    EFI_GUID(  0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 )

#define SMBIOS_TABLE_GUID    \

    EFI_GUID(  0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )

#define SAL_SYSTEM_TABLE_GUID    \

    EFI_GUID(  0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )

#define HCDP_TABLE_GUID \

    EFI_GUID(  0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98 )

typedef struct {

        efi_guid_t guid;

        unsigned long table;

} efi_config_table_t;

#define EFI_SYSTEM_TABLE_SIGNATURE 0x5453595320494249

#define EFI_SYSTEM_TABLE_REVISION  ((1 << 16) | 00)

typedef struct {

        efi_table_hdr_t hdr;

        unsigned long fw_vendor;        /* physical addr of CHAR16 vendor string */

        u32 fw_revision;

        unsigned long con_in_handle;

        unsigned long con_in;

        unsigned long con_out_handle;

        unsigned long con_out;

        unsigned long stderr_handle;

        unsigned long stderr;

        efi_runtime_services_t *runtime;

        unsigned long boottime;

        unsigned long nr_tables;

        unsigned long tables;

} efi_system_table_t;

/*

 * All runtime access to EFI goes through this structure:

 */

extern struct efi {

        efi_system_table_t *systab;     /* EFI system table */

        void *mps;                      /* MPS table */

        void *acpi;                     /* ACPI table  (IA64 ext 0.71) */

        void *acpi20;                   /* ACPI table  (ACPI 2.0) */

        void *smbios;                   /* SM BIOS table */

        void *sal_systab;               /* SAL system table */

        void *boot_info;                /* boot info table */

        void *hcdp;                     /* HCDP table */

        efi_get_time_t *get_time;

        efi_set_time_t *set_time;

        efi_get_wakeup_time_t *get_wakeup_time;

        efi_set_wakeup_time_t *set_wakeup_time;

        efi_get_variable_t *get_variable;

        efi_get_next_variable_t *get_next_variable;

        efi_set_variable_t *set_variable;

        efi_get_next_high_mono_count_t *get_next_high_mono_count;

        efi_reset_system_t *reset_system;

} efi;

static inline int

efi_guidcmp (efi_guid_t left, efi_guid_t right)

{

        return memcmp(&left, &right, sizeof (efi_guid_t));

}

static inline char *

efi_guid_unparse(efi_guid_t *guid, char *out)

{

        sprintf(out, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",

                guid->b[3], guid->b[2], guid->b[1], guid->b[0],

                guid->b[5], guid->b[4], guid->b[7], guid->b[6],

                guid->b[8], guid->b[9], guid->b[10], guid->b[11],

                guid->b[12], guid->b[13], guid->b[14], guid->b[15]);

        return out;

}

extern void efi_init (void);

extern void efi_map_pal_code (void);

extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg);

extern void efi_gettimeofday (struct timespec *ts);

extern void efi_enter_virtual_mode (void);      /* switch EFI to virtual mode, if possible */

extern u64 efi_get_iobase (void);

extern u32 efi_mem_type (unsigned long phys_addr);

extern u64 efi_mem_attributes (unsigned long phys_addr);

/*

 * Variable Attributes

 */

#define EFI_VARIABLE_NON_VOLATILE       0x0000000000000001

#define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002

#define EFI_VARIABLE_RUNTIME_ACCESS     0x0000000000000004

/*

 * efi_dir is allocated in arch/ia64/kernel/efi.c.

 */

#ifdef CONFIG_PROC_FS

extern struct proc_dir_entry *efi_dir;

#endif

#endif /* _LINUX_EFI_H */