1 files changed, 356 insertions, 0 deletions
diff --git a/include/efi.h b/include/efi.h
new file mode 100644
index 0000000000..f0097017b3
--- /dev/null
+++ b/include/efi.h
@@ -0,0 +1,356 @@
+/*
+ * 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>
+ *
+ * From include/linux/efi.h in kernel 4.1 with some additions/subtractions
+ */
+
+#ifndef _EFI_H
+#define _EFI_H
+
+#include <linux/string.h>
+#include <linux/types.h>
+
+struct efi_device_path;
+
+#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_READY		(6 | (1UL << (BITS_PER_LONG - 1)))
+#define EFI_DEVICE_ERROR	(7 | (1UL << (BITS_PER_LONG - 1)))
+#define EFI_WRITE_PROTECTED	(8 | (1UL << (BITS_PER_LONG - 1)))
+#define EFI_OUT_OF_RESOURCES	(9 | (1UL << (BITS_PER_LONG - 1)))
+#define EFI_NOT_FOUND		(14 | (1UL << (BITS_PER_LONG - 1)))
+#define EFI_SECURITY_VIOLATION	(26 | (1UL << (BITS_PER_LONG - 1)))
+
+typedef unsigned long efi_status_t;
+typedef u64 efi_physical_addr_t;
+typedef u64 efi_virtual_addr_t;
+typedef void *efi_handle_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 */
+struct efi_table_hdr {
+	u64 signature;
+	u32 revision;
+	u32 headersize;
+	u32 crc32;
+	u32 reserved;
+};
+
+/* Enumeration of memory types introduced in UEFI */
+enum efi_mem_type {
+	EFI_RESERVED_MEMORY_TYPE,
+	/*
+	 * The code portions of a loaded application.
+	 * (Note that UEFI OS loaders are UEFI applications.)
+	 */
+	EFI_LOADER_CODE,
+	/*
+	 * The data portions of a loaded application and
+	 * the default data allocation type used by an application
+	 * to allocate pool memory.
+	 */
+	EFI_LOADER_DATA,
+	/* The code portions of a loaded Boot Services Driver */
+	EFI_BOOT_SERVICES_CODE,
+	/*
+	 * The data portions of a loaded Boot Serves Driver and
+	 * the default data allocation type used by a Boot Services
+	 * Driver to allocate pool memory.
+	 */
+	EFI_BOOT_SERVICES_DATA,
+	/* The code portions of a loaded Runtime Services Driver */
+	EFI_RUNTIME_SERVICES_CODE,
+	/*
+	 * The data portions of a loaded Runtime Services Driver and
+	 * the default data allocation type used by a Runtime Services
+	 * Driver to allocate pool memory.
+	 */
+	EFI_RUNTIME_SERVICES_DATA,
+	/* Free (unallocated) memory */
+	EFI_CONVENTIONAL_MEMORY,
+	/* Memory in which errors have been detected */
+	EFI_UNUSABLE_MEMORY,
+	/* Memory that holds the ACPI tables */
+	EFI_ACPI_RECLAIM_MEMORY,
+	/* Address space reserved for use by the firmware */
+	EFI_ACPI_MEMORY_NVS,
+	/*
+	 * Used by system firmware to request that a memory-mapped IO region
+	 * be mapped by the OS to a virtual address so it can be accessed by
+	 * EFI runtime services.
+	 */
+	EFI_MMAP_IO,
+	/*
+	 * System memory-mapped IO region that is used to translate
+	 * memory cycles to IO cycles by the processor.
+	 */
+	EFI_MMAP_IO_PORT,
+	/*
+	 * Address space reserved by the firmware for code that is
+	 * part of the processor.
+	 */
+	EFI_PAL_CODE,
+
+	EFI_MAX_MEMORY_TYPE,
+	EFI_TABLE_END,	/* For efi_build_mem_table() */
+};
+
+/* Attribute values */
+enum {
+	EFI_MEMORY_UC_SHIFT	= 0,	/* uncached */
+	EFI_MEMORY_WC_SHIFT	= 1,	/* write-coalescing */
+	EFI_MEMORY_WT_SHIFT	= 2,	/* write-through */
+	EFI_MEMORY_WB_SHIFT	= 3,	/* write-back */
+	EFI_MEMORY_UCE_SHIFT	= 4,	/* uncached, exported */
+	EFI_MEMORY_WP_SHIFT	= 12,	/* write-protect */
+	EFI_MEMORY_RP_SHIFT	= 13,	/* read-protect */
+	EFI_MEMORY_XP_SHIFT	= 14,	/* execute-protect */
+	EFI_MEMORY_RUNTIME_SHIFT = 63,	/* range requires runtime mapping */
+
+	EFI_MEMORY_RUNTIME = 1ULL << EFI_MEMORY_RUNTIME_SHIFT,
+	EFI_MEM_DESC_VERSION	= 1,
+};
+
+#define EFI_PAGE_SHIFT		12
+#define EFI_PAGE_SIZE		(1UL << EFI_PAGE_SHIFT)
+
+struct efi_mem_desc {
+	u32 type;
+	u32 reserved;
+	efi_physical_addr_t physical_start;
+	efi_virtual_addr_t virtual_start;
+	u64 num_pages;
+	u64 attribute;
+};
+
+/* Allocation types for calls to boottime->allocate_pages*/
+#define EFI_ALLOCATE_ANY_PAGES		0
+#define EFI_ALLOCATE_MAX_ADDRESS	1
+#define EFI_ALLOCATE_ADDRESS		2
+#define EFI_MAX_ALLOCATE_TYPE		3
+
+/* Types and defines for Time Services */
+#define EFI_TIME_ADJUST_DAYLIGHT 0x1
+#define EFI_TIME_IN_DAYLIGHT     0x2
+#define EFI_UNSPECIFIED_TIMEZONE 0x07ff
+
+struct efi_time {
+	u16 year;
+	u8 month;
+	u8 day;
+	u8 hour;
+	u8 minute;
+	u8 second;
+	u8 pad1;
+	u32 nanosecond;
+	s16 timezone;
+	u8 daylight;
+	u8 pad2;
+};
+
+struct efi_time_cap {
+	u32 resolution;
+	u32 accuracy;
+	u8 sets_to_zero;
+};
+
+enum efi_locate_search_type {
+	all_handles,
+	by_register_notify,
+	by_protocol
+};
+
+struct efi_open_protocol_info_entry {
+	efi_handle_t agent_handle;
+	efi_handle_t controller_handle;
+	u32 attributes;
+	u32 open_count;
+};
+
+enum efi_entry_t {
+	EFIET_END,	/* Signals this is the last (empty) entry */
+	EFIET_MEMORY_MAP,
+
+	/* Number of entries */
+	EFIET_MEMORY_COUNT,
+};
+
+#define EFI_TABLE_VERSION	1
+
+/**
+ * struct efi_info_hdr - Header for the EFI info table
+ *
+ * @version:	EFI_TABLE_VERSION
+ * @hdr_size:	Size of this struct in bytes
+ * @total_size:	Total size of this header plus following data
+ * @spare:	Spare space for expansion
+ */
+struct efi_info_hdr {
+	u32 version;
+	u32 hdr_size;
+	u32 total_size;
+	u32 spare[5];
+};
+
+/**
+ * struct efi_entry_hdr - Header for a table entry
+ *
+ * @type:	enum eft_entry_t
+ * @size	size of entry bytes excluding header and padding
+ * @addr:	address of this entry (0 if it follows the header )
+ * @link:	size of entry including header and padding
+ * @spare1:	Spare space for expansion
+ * @spare2:	Spare space for expansion
+ */
+struct efi_entry_hdr {
+	u32 type;
+	u32 size;
+	u64 addr;
+	u32 link;
+	u32 spare1;
+	u64 spare2;
+};
+
+/**
+ * struct efi_entry_memmap - a memory map table passed to U-Boot
+ *
+ * @version:	EFI's memory map table version
+ * @desc_size:	EFI's size of each memory descriptor
+ * @spare:	Spare space for expansion
+ * @desc:	An array of descriptors, each @desc_size bytes apart
+ */
+struct efi_entry_memmap {
+	u32 version;
+	u32 desc_size;
+	u64 spare;
+	struct efi_mem_desc desc[];
+};
+
+static inline struct efi_mem_desc *efi_get_next_mem_desc(
+		struct efi_entry_memmap *map, struct efi_mem_desc *desc)
+{
+	return (struct efi_mem_desc *)((ulong)desc + map->desc_size);
+}
+
+struct efi_priv {
+	efi_handle_t parent_image;
+	struct efi_device_path *device_path;
+	struct efi_system_table *sys_table;
+	struct efi_boot_services *boot;
+	struct efi_runtime_services *run;
+	bool use_pool_for_malloc;
+	unsigned long ram_base;
+	unsigned int image_data_type;
+	struct efi_info_hdr *info;
+	unsigned int info_size;
+	void *next_hdr;
+};
+
+/* Base address of the EFI image */
+extern char image_base[];
+
+/**
+ * efi_get_sys_table() - Get access to the main EFI system table
+ *
+ * @return pointer to EFI system table
+ */
+struct efi_system_table *efi_get_sys_table(void);
+
+/**
+ * efi_get_ram_base() - Find the base of RAM
+ *
+ * This is used when U-Boot is built as an EFI application.
+ *
+ * @return the base of RAM as known to U-Boot
+ */
+unsigned long efi_get_ram_base(void);
+
+/**
+ * efi_init() - Set up ready for use of EFI boot services
+ *
+ * @priv:	Pointer to our private EFI structure to fill in
+ * @banner:	Banner to display when starting
+ * @image:	The image handle passed to efi_main()
+ * @sys_table:	The EFI system table pointer passed to efi_main()
+ */
+int efi_init(struct efi_priv *priv, const char *banner, efi_handle_t image,
+	     struct efi_system_table *sys_table);
+
+/**
+ * efi_malloc() - Allocate some memory from EFI
+ *
+ * @priv:	Pointer to private EFI structure
+ * @size:	Number of bytes to allocate
+ * @retp:	Return EFI status result
+ * @return pointer to memory allocated, or NULL on error
+ */
+void *efi_malloc(struct efi_priv *priv, int size, efi_status_t *retp);
+
+/**
+ * efi_free() - Free memory allocated from EFI
+ *
+ * @priv:	Pointer to private EFI structure
+ * @ptr:	Pointer to memory to free
+ */
+void efi_free(struct efi_priv *priv, void *ptr);
+
+/**
+ * efi_puts() - Write out a string to the EFI console
+ *
+ * @priv:	Pointer to private EFI structure
+ * @str:	String to write (note this is a ASCII, not unicode)
+ */
+void efi_puts(struct efi_priv *priv, const char *str);
+
+/**
+ * efi_putc() - Write out a character to the EFI console
+ *
+ * @priv:	Pointer to private EFI structure
+ * @ch:		Character to write (note this is not unicode)
+ */
+void efi_putc(struct efi_priv *priv, const char ch);
+
+/**
+ * efi_info_get() - get an entry from an EFI table
+ *
+ * @type:	Entry type to search for
+ * @datap:	Returns pointer to entry data
+ * @sizep:	Returns pointer to entry size
+ * @return 0 if OK, -ENODATA if there is no table, -ENOENT if there is no entry
+ * of the requested type, -EPROTONOSUPPORT if the table has the wrong version
+ */
+int efi_info_get(enum efi_entry_t type, void **datap, int *sizep);
+
+/**
+ * efi_build_mem_table() - make a sorted copy of the memory table
+ *
+ * @map:	Pointer to EFI memory map table
+ * @size:	Size of table in bytes
+ * @skip_bs:	True to skip boot-time memory and merge it with conventional
+ *		memory. This will significantly reduce the number of table
+ *		entries.
+ * @return pointer to the new table. It should be freed with free() by the
+ *	   caller
+ */
+void *efi_build_mem_table(struct efi_entry_memmap *map, int size, bool skip_bs);
+
+#endif /* _LINUX_EFI_H */