399 lines
12 KiB
C
399 lines
12 KiB
C
#ifndef _LINUX_EFI_H
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#define _LINUX_EFI_H
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/*
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* Extensible Firmware Interface
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* Based on 'Extensible Firmware Interface Specification' version 0.9, April 30, 1999
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*
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* Copyright (C) 1999 VA Linux Systems
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* Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
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* Copyright (C) 1999, 2002-2003 Hewlett-Packard Co.
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* David Mosberger-Tang <davidm@hpl.hp.com>
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* Stephane Eranian <eranian@hpl.hp.com>
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*/
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#include <linux/init.h>
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#include <linux/string.h>
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#include <linux/time.h>
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#include <linux/types.h>
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#include <linux/proc_fs.h>
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#include <linux/rtc.h>
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#include <linux/ioport.h>
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#include <asm/page.h>
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#include <asm/system.h>
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#define EFI_SUCCESS 0
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#define EFI_LOAD_ERROR ( 1 | (1UL << (BITS_PER_LONG-1)))
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#define EFI_INVALID_PARAMETER ( 2 | (1UL << (BITS_PER_LONG-1)))
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#define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1)))
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#define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1)))
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#define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1)))
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#define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1)))
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typedef unsigned long efi_status_t;
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typedef u8 efi_bool_t;
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typedef u16 efi_char16_t; /* UNICODE character */
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typedef struct {
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u8 b[16];
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} efi_guid_t;
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#define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
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((efi_guid_t) \
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{{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
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(b) & 0xff, ((b) >> 8) & 0xff, \
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(c) & 0xff, ((c) >> 8) & 0xff, \
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(d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
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/*
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* Generic EFI table header
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*/
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typedef struct {
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u64 signature;
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u32 revision;
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u32 headersize;
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u32 crc32;
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u32 reserved;
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} efi_table_hdr_t;
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/*
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* Memory map descriptor:
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*/
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/* Memory types: */
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#define EFI_RESERVED_TYPE 0
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#define EFI_LOADER_CODE 1
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#define EFI_LOADER_DATA 2
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#define EFI_BOOT_SERVICES_CODE 3
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#define EFI_BOOT_SERVICES_DATA 4
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#define EFI_RUNTIME_SERVICES_CODE 5
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#define EFI_RUNTIME_SERVICES_DATA 6
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#define EFI_CONVENTIONAL_MEMORY 7
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#define EFI_UNUSABLE_MEMORY 8
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#define EFI_ACPI_RECLAIM_MEMORY 9
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#define EFI_ACPI_MEMORY_NVS 10
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#define EFI_MEMORY_MAPPED_IO 11
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#define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12
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#define EFI_PAL_CODE 13
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#define EFI_MAX_MEMORY_TYPE 14
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/* Attribute values: */
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#define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */
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#define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */
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#define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */
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#define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */
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#define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */
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#define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */
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#define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */
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#define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */
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#define EFI_MEMORY_DESCRIPTOR_VERSION 1
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#define EFI_PAGE_SHIFT 12
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typedef struct {
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u32 type;
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u32 pad;
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u64 phys_addr;
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u64 virt_addr;
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u64 num_pages;
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u64 attribute;
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} efi_memory_desc_t;
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typedef int (*efi_freemem_callback_t) (unsigned long start, unsigned long end, void *arg);
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/*
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* Types and defines for Time Services
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*/
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#define EFI_TIME_ADJUST_DAYLIGHT 0x1
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#define EFI_TIME_IN_DAYLIGHT 0x2
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#define EFI_UNSPECIFIED_TIMEZONE 0x07ff
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typedef struct {
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u16 year;
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u8 month;
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u8 day;
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u8 hour;
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u8 minute;
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u8 second;
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u8 pad1;
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u32 nanosecond;
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s16 timezone;
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u8 daylight;
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u8 pad2;
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} efi_time_t;
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typedef struct {
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u32 resolution;
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u32 accuracy;
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u8 sets_to_zero;
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} efi_time_cap_t;
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/*
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* Types and defines for EFI ResetSystem
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*/
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#define EFI_RESET_COLD 0
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#define EFI_RESET_WARM 1
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#define EFI_RESET_SHUTDOWN 2
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/*
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* EFI Runtime Services table
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*/
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#define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
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#define EFI_RUNTIME_SERVICES_REVISION 0x00010000
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typedef struct {
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efi_table_hdr_t hdr;
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unsigned long get_time;
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unsigned long set_time;
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unsigned long get_wakeup_time;
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unsigned long set_wakeup_time;
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unsigned long set_virtual_address_map;
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unsigned long convert_pointer;
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unsigned long get_variable;
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unsigned long get_next_variable;
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unsigned long set_variable;
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unsigned long get_next_high_mono_count;
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unsigned long reset_system;
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} efi_runtime_services_t;
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typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc);
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typedef efi_status_t efi_set_time_t (efi_time_t *tm);
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typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending,
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efi_time_t *tm);
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typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm);
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typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr,
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unsigned long *data_size, void *data);
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typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name,
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efi_guid_t *vendor);
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typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor,
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unsigned long attr, unsigned long data_size,
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void *data);
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typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count);
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typedef void efi_reset_system_t (int reset_type, efi_status_t status,
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unsigned long data_size, efi_char16_t *data);
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typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size,
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unsigned long descriptor_size,
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u32 descriptor_version,
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efi_memory_desc_t *virtual_map);
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/*
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* EFI Configuration Table and GUID definitions
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*/
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#define NULL_GUID \
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EFI_GUID( 0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 )
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#define MPS_TABLE_GUID \
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EFI_GUID( 0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
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#define ACPI_TABLE_GUID \
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EFI_GUID( 0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
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#define ACPI_20_TABLE_GUID \
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EFI_GUID( 0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 )
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#define SMBIOS_TABLE_GUID \
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EFI_GUID( 0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
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#define SAL_SYSTEM_TABLE_GUID \
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EFI_GUID( 0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
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#define HCDP_TABLE_GUID \
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EFI_GUID( 0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98 )
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#define UGA_IO_PROTOCOL_GUID \
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EFI_GUID( 0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0xb, 0x7, 0xa2 )
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#define EFI_GLOBAL_VARIABLE_GUID \
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EFI_GUID( 0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c )
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typedef struct {
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efi_guid_t guid;
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unsigned long table;
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} efi_config_table_t;
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#define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
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#define EFI_SYSTEM_TABLE_REVISION ((1 << 16) | 00)
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typedef struct {
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efi_table_hdr_t hdr;
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unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */
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u32 fw_revision;
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unsigned long con_in_handle;
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unsigned long con_in;
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unsigned long con_out_handle;
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unsigned long con_out;
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unsigned long stderr_handle;
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unsigned long stderr;
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efi_runtime_services_t *runtime;
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unsigned long boottime;
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unsigned long nr_tables;
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unsigned long tables;
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} efi_system_table_t;
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struct efi_memory_map {
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void *phys_map;
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void *map;
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void *map_end;
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int nr_map;
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unsigned long desc_version;
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unsigned long desc_size;
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};
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#define EFI_INVALID_TABLE_ADDR (~0UL)
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/*
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* All runtime access to EFI goes through this structure:
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*/
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extern struct efi {
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efi_system_table_t *systab; /* EFI system table */
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unsigned long mps; /* MPS table */
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unsigned long acpi; /* ACPI table (IA64 ext 0.71) */
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unsigned long acpi20; /* ACPI table (ACPI 2.0) */
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unsigned long smbios; /* SM BIOS table */
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unsigned long sal_systab; /* SAL system table */
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unsigned long boot_info; /* boot info table */
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unsigned long hcdp; /* HCDP table */
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unsigned long uga; /* UGA table */
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efi_get_time_t *get_time;
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efi_set_time_t *set_time;
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efi_get_wakeup_time_t *get_wakeup_time;
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efi_set_wakeup_time_t *set_wakeup_time;
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efi_get_variable_t *get_variable;
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efi_get_next_variable_t *get_next_variable;
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efi_set_variable_t *set_variable;
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efi_get_next_high_mono_count_t *get_next_high_mono_count;
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efi_reset_system_t *reset_system;
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efi_set_virtual_address_map_t *set_virtual_address_map;
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} efi;
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static inline int
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efi_guidcmp (efi_guid_t left, efi_guid_t right)
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{
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return memcmp(&left, &right, sizeof (efi_guid_t));
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}
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static inline char *
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efi_guid_unparse(efi_guid_t *guid, char *out)
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{
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sprintf(out, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
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guid->b[3], guid->b[2], guid->b[1], guid->b[0],
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guid->b[5], guid->b[4], guid->b[7], guid->b[6],
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guid->b[8], guid->b[9], guid->b[10], guid->b[11],
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guid->b[12], guid->b[13], guid->b[14], guid->b[15]);
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return out;
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}
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extern void efi_init (void);
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extern void *efi_get_pal_addr (void);
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extern void efi_map_pal_code (void);
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extern void efi_map_memmap(void);
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extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg);
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extern void efi_gettimeofday (struct timespec *ts);
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extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */
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extern u64 efi_get_iobase (void);
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extern u32 efi_mem_type (unsigned long phys_addr);
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extern u64 efi_mem_attributes (unsigned long phys_addr);
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extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size);
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extern int efi_mem_attribute_range (unsigned long phys_addr, unsigned long size,
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u64 attr);
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extern int __init efi_uart_console_only (void);
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extern void efi_initialize_iomem_resources(struct resource *code_resource,
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struct resource *data_resource);
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extern unsigned long efi_get_time(void);
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extern int __init efi_set_rtc_mmss(unsigned long nowtime);
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extern int is_available_memory(efi_memory_desc_t * md);
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extern struct efi_memory_map memmap;
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/**
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* efi_range_is_wc - check the WC bit on an address range
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* @start: starting kvirt address
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* @len: length of range
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*
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* Consult the EFI memory map and make sure it's ok to set this range WC.
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* Returns true or false.
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*/
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static inline int efi_range_is_wc(unsigned long start, unsigned long len)
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{
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unsigned long i;
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for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) {
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unsigned long paddr = __pa(start + i);
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if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC))
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return 0;
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}
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/* The range checked out */
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return 1;
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}
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#ifdef CONFIG_EFI_PCDP
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extern int __init efi_setup_pcdp_console(char *);
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#endif
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/*
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* We play games with efi_enabled so that the compiler will, if possible, remove
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* EFI-related code altogether.
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*/
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#ifdef CONFIG_EFI
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# ifdef CONFIG_X86
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extern int efi_enabled;
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# else
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# define efi_enabled 1
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# endif
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#else
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# define efi_enabled 0
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#endif
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/*
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* Variable Attributes
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*/
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#define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
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#define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
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#define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
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/*
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* EFI Device Path information
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*/
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#define EFI_DEV_HW 0x01
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#define EFI_DEV_PCI 1
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#define EFI_DEV_PCCARD 2
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#define EFI_DEV_MEM_MAPPED 3
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#define EFI_DEV_VENDOR 4
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#define EFI_DEV_CONTROLLER 5
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#define EFI_DEV_ACPI 0x02
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#define EFI_DEV_BASIC_ACPI 1
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#define EFI_DEV_EXPANDED_ACPI 2
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#define EFI_DEV_MSG 0x03
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#define EFI_DEV_MSG_ATAPI 1
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#define EFI_DEV_MSG_SCSI 2
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#define EFI_DEV_MSG_FC 3
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#define EFI_DEV_MSG_1394 4
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#define EFI_DEV_MSG_USB 5
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#define EFI_DEV_MSG_USB_CLASS 15
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#define EFI_DEV_MSG_I20 6
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#define EFI_DEV_MSG_MAC 11
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#define EFI_DEV_MSG_IPV4 12
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#define EFI_DEV_MSG_IPV6 13
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#define EFI_DEV_MSG_INFINIBAND 9
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#define EFI_DEV_MSG_UART 14
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#define EFI_DEV_MSG_VENDOR 10
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#define EFI_DEV_MEDIA 0x04
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#define EFI_DEV_MEDIA_HARD_DRIVE 1
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#define EFI_DEV_MEDIA_CDROM 2
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#define EFI_DEV_MEDIA_VENDOR 3
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#define EFI_DEV_MEDIA_FILE 4
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#define EFI_DEV_MEDIA_PROTOCOL 5
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#define EFI_DEV_BIOS_BOOT 0x05
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#define EFI_DEV_END_PATH 0x7F
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#define EFI_DEV_END_PATH2 0xFF
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#define EFI_DEV_END_INSTANCE 0x01
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#define EFI_DEV_END_ENTIRE 0xFF
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struct efi_generic_dev_path {
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u8 type;
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u8 sub_type;
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u16 length;
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} __attribute ((packed));
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#endif /* _LINUX_EFI_H */
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