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-rw-r--r--include/linux/efi.h398
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diff --git a/include/linux/efi.h b/include/linux/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
+
+/*
+ * For current x86 implementations of EFI, there is
+ * additional padding in the mem descriptors. This is not
+ * the case in ia64. Need to have this fixed in the f/w.
+ */
+typedef struct {
+ u32 type;
+ u32 pad;
+ u64 phys_addr;
+ u64 virt_addr;
+ u64 num_pages;
+ u64 attribute;
+#if defined (__i386__)
+ u64 pad1;
+#endif
+} 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 {
+ efi_memory_desc_t *phys_map;
+ efi_memory_desc_t *map;
+ int nr_map;
+ unsigned long desc_version;
+};
+
+/*
+ * 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)
+{
+ int 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 */
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