405 lines
12 KiB
C
405 lines
12 KiB
C
|
#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 <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) (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;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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 )
|
||
|
|
|
||
|
|
#define UV_SYSTEM_TABLE_GUID \
|
||
|
|
EFI_GUID( 0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93 )
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
efi_guid_t guid;
|
||
|
|
unsigned long table;
|
||
|
|
} efi_config_table_t;
|
||
|
|
|
||
|
|
#define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
|
||
|
|
|
||
|
|
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;
|
||
|
|
};
|
||
|
|
|
||
|
|
#define EFI_INVALID_TABLE_ADDR (~0UL)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* All runtime access to EFI goes through this structure:
|
||
|
|
*/
|
||
|
|
extern struct efi {
|
||
|
|
efi_system_table_t *systab; /* EFI system table */
|
||
|
|
unsigned long mps; /* MPS table */
|
||
|
|
unsigned long acpi; /* ACPI table (IA64 ext 0.71) */
|
||
|
|
unsigned long acpi20; /* ACPI table (ACPI 2.0) */
|
||
|
|
unsigned long smbios; /* SM BIOS table */
|
||
|
|
unsigned long sal_systab; /* SAL system table */
|
||
|
|
unsigned long boot_info; /* boot info table */
|
||
|
|
unsigned long hcdp; /* HCDP table */
|
||
|
|
unsigned long uga; /* UGA table */
|
||
|
|
unsigned long uv_systab; /* UV system 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_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 u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size);
|
||
|
|
extern int __init efi_uart_console_only (void);
|
||
|
|
extern void efi_initialize_iomem_resources(struct resource *code_resource,
|
||
|
|
struct resource *data_resource, struct resource *bss_resource);
|
||
|
|
extern unsigned long efi_get_time(void);
|
||
|
|
extern int 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));
|
||
|
|
|
||
|
|
static inline void memrange_efi_to_native(u64 *addr, u64 *npages)
|
||
|
|
{
|
||
|
|
*npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr);
|
||
|
|
*addr &= PAGE_MASK;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* _LINUX_EFI_H */
|