initial_commit

1 files changed, 449 insertions, 0 deletions

diff --git a/include/linux/efi.h b/include/linux/efi.h
new file mode 100644
index 00000000..e0ce165a
--- /dev/null
+++ b/include/linux/efi.h
@@ -0,0 +1,449 @@
+#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, "%pUl", guid->b);
+        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 void efi_reserve_boot_services(void);
+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
+#define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
+#define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
+#define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
+#define EFI_VARIABLE_APPEND_WRITE	0x0000000000000040
+
+#define EFI_VARIABLE_MASK 	(EFI_VARIABLE_NON_VOLATILE | \
+				EFI_VARIABLE_BOOTSERVICE_ACCESS | \
+				EFI_VARIABLE_RUNTIME_ACCESS | \
+				EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
+				EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
+				EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
+				EFI_VARIABLE_APPEND_WRITE)
+/*
+ * 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;
+}
+
+#if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE)
+/*
+ * EFI Variable support.
+ *
+ * Different firmware drivers can expose their EFI-like variables using
+ * the following.
+ */
+
+struct efivar_operations {
+	efi_get_variable_t *get_variable;
+	efi_get_next_variable_t *get_next_variable;
+	efi_set_variable_t *set_variable;
+};
+
+struct efivars {
+	/*
+	 * ->lock protects two things:
+	 * 1) ->list - adds, removals, reads, writes
+	 * 2) ops.[gs]et_variable() calls.
+	 * It must not be held when creating sysfs entries or calling kmalloc.
+	 * ops.get_next_variable() is only called from register_efivars(),
+	 * which is protected by the BKL, so that path is safe.
+	 */
+	spinlock_t lock;
+	struct list_head list;
+	struct kset *kset;
+	struct bin_attribute *new_var, *del_var;
+	const struct efivar_operations *ops;
+};
+
+int register_efivars(struct efivars *efivars,
+		     const struct efivar_operations *ops,
+		     struct kobject *parent_kobj);
+void unregister_efivars(struct efivars *efivars);
+
+#endif /* CONFIG_EFI_VARS */
+
+#endif /* _LINUX_EFI_H */