efi.h
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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 <linux/rtc.h>
- #include <linux/ioport.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 ((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_WP ((u64)0x0000000000001000ULL) /* write-protect */
- #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */
- #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */
- #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* 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
- #define EFI_RESET_SHUTDOWN 2
- /*
- * EFI Runtime Services table
- */
- #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
- #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);
- typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size,
- unsigned long descriptor_size,
- u32 descriptor_version,
- efi_memory_desc_t *virtual_map);
- /*
- * 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 )
- #define UGA_IO_PROTOCOL_GUID
- EFI_GUID( 0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0xb, 0x7, 0xa2 )
- #define EFI_GLOBAL_VARIABLE_GUID
- EFI_GUID( 0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c )
- typedef struct {
- efi_guid_t guid;
- unsigned long table;
- } efi_config_table_t;
- #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
- #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;
- struct efi_memory_map {
- void *phys_map;
- void *map;
- void *map_end;
- int nr_map;
- unsigned long desc_version;
- unsigned long desc_size;
- };
- /*
- * 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 */
- void *uga; /* UGA 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_set_virtual_address_map_t *set_virtual_address_map;
- } 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_get_pal_addr (void);
- extern void efi_map_pal_code (void);
- extern void efi_map_memmap(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);
- extern int __init efi_uart_console_only (void);
- extern void efi_initialize_iomem_resources(struct resource *code_resource,
- struct resource *data_resource);
- extern unsigned long __init efi_get_time(void);
- extern int __init efi_set_rtc_mmss(unsigned long nowtime);
- extern struct efi_memory_map memmap;
- /**
- * efi_range_is_wc - check the WC bit on an address range
- * @start: starting kvirt address
- * @len: length of range
- *
- * Consult the EFI memory map and make sure it's ok to set this range WC.
- * Returns true or false.
- */
- static inline int efi_range_is_wc(unsigned long start, unsigned long len)
- {
- unsigned long i;
- for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) {
- unsigned long paddr = __pa(start + i);
- if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC))
- return 0;
- }
- /* The range checked out */
- return 1;
- }
- #ifdef CONFIG_EFI_PCDP
- extern int __init efi_setup_pcdp_console(char *);
- #endif
- /*
- * We play games with efi_enabled so that the compiler will, if possible, remove
- * EFI-related code altogether.
- */
- #ifdef CONFIG_EFI
- # ifdef CONFIG_X86
- extern int efi_enabled;
- # else
- # define efi_enabled 1
- # endif
- #else
- # define efi_enabled 0
- #endif
- /*
- * Variable Attributes
- */
- #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
- #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
- #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
- /*
- * EFI Device Path information
- */
- #define EFI_DEV_HW 0x01
- #define EFI_DEV_PCI 1
- #define EFI_DEV_PCCARD 2
- #define EFI_DEV_MEM_MAPPED 3
- #define EFI_DEV_VENDOR 4
- #define EFI_DEV_CONTROLLER 5
- #define EFI_DEV_ACPI 0x02
- #define EFI_DEV_BASIC_ACPI 1
- #define EFI_DEV_EXPANDED_ACPI 2
- #define EFI_DEV_MSG 0x03
- #define EFI_DEV_MSG_ATAPI 1
- #define EFI_DEV_MSG_SCSI 2
- #define EFI_DEV_MSG_FC 3
- #define EFI_DEV_MSG_1394 4
- #define EFI_DEV_MSG_USB 5
- #define EFI_DEV_MSG_USB_CLASS 15
- #define EFI_DEV_MSG_I20 6
- #define EFI_DEV_MSG_MAC 11
- #define EFI_DEV_MSG_IPV4 12
- #define EFI_DEV_MSG_IPV6 13
- #define EFI_DEV_MSG_INFINIBAND 9
- #define EFI_DEV_MSG_UART 14
- #define EFI_DEV_MSG_VENDOR 10
- #define EFI_DEV_MEDIA 0x04
- #define EFI_DEV_MEDIA_HARD_DRIVE 1
- #define EFI_DEV_MEDIA_CDROM 2
- #define EFI_DEV_MEDIA_VENDOR 3
- #define EFI_DEV_MEDIA_FILE 4
- #define EFI_DEV_MEDIA_PROTOCOL 5
- #define EFI_DEV_BIOS_BOOT 0x05
- #define EFI_DEV_END_PATH 0x7F
- #define EFI_DEV_END_PATH2 0xFF
- #define EFI_DEV_END_INSTANCE 0x01
- #define EFI_DEV_END_ENTIRE 0xFF
- struct efi_generic_dev_path {
- u8 type;
- u8 sub_type;
- u16 length;
- } __attribute ((packed));
- #endif /* _LINUX_EFI_H */