[thirdparty/u-boot.git] / include / efi.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * 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/linkage.h>
#include <linux/string.h>
#include <linux/types.h>

/*
 * EFI on x86_64 uses the Microsoft ABI which is not the default for GCC.
 *
 * There are two scenarios for EFI on x86_64: building a 64-bit EFI stub
 * codes (CONFIG_EFI_STUB_64BIT) and building a 64-bit U-Boot (CONFIG_X86_64).
 * Either needs to be properly built with the '-m64' compiler flag, and hence
 * it is enough to only check the compiler provided define __x86_64__ here.
 */
#ifdef __x86_64__
#define EFIAPI __attribute__((ms_abi))
#define efi_va_list __builtin_ms_va_list
#define efi_va_start __builtin_ms_va_start
#define efi_va_arg __builtin_va_arg
#define efi_va_end __builtin_ms_va_end
#else
#define EFIAPI asmlinkage
#define efi_va_list va_list
#define efi_va_start va_start
#define efi_va_arg va_arg
#define efi_va_end va_end
#endif /* __x86_64__ */

#define EFI32_LOADER_SIGNATURE	"EL32"
#define EFI64_LOADER_SIGNATURE	"EL64"

struct efi_device_path;

typedef struct {
	u8 b[16];
} efi_guid_t __attribute__((aligned(8)));

#define EFI_BITS_PER_LONG	(sizeof(long) * 8)

/* Bit mask for EFI status code with error */
#define EFI_ERROR_MASK (1UL << (EFI_BITS_PER_LONG - 1))
/* Status codes returned by EFI protocols */
#define EFI_SUCCESS			0
#define EFI_LOAD_ERROR			(EFI_ERROR_MASK | 1)
#define EFI_INVALID_PARAMETER		(EFI_ERROR_MASK | 2)
#define EFI_UNSUPPORTED			(EFI_ERROR_MASK | 3)
#define EFI_BAD_BUFFER_SIZE		(EFI_ERROR_MASK | 4)
#define EFI_BUFFER_TOO_SMALL		(EFI_ERROR_MASK | 5)
#define EFI_NOT_READY			(EFI_ERROR_MASK | 6)
#define EFI_DEVICE_ERROR		(EFI_ERROR_MASK | 7)
#define EFI_WRITE_PROTECTED		(EFI_ERROR_MASK | 8)
#define EFI_OUT_OF_RESOURCES		(EFI_ERROR_MASK | 9)
#define EFI_VOLUME_CORRUPTED		(EFI_ERROR_MASK | 10)
#define EFI_VOLUME_FULL			(EFI_ERROR_MASK | 11)
#define EFI_NO_MEDIA			(EFI_ERROR_MASK | 12)
#define EFI_MEDIA_CHANGED		(EFI_ERROR_MASK | 13)
#define EFI_NOT_FOUND			(EFI_ERROR_MASK | 14)
#define EFI_ACCESS_DENIED		(EFI_ERROR_MASK | 15)
#define EFI_NO_RESPONSE			(EFI_ERROR_MASK | 16)
#define EFI_NO_MAPPING			(EFI_ERROR_MASK | 17)
#define EFI_TIMEOUT			(EFI_ERROR_MASK | 18)
#define EFI_NOT_STARTED			(EFI_ERROR_MASK | 19)
#define EFI_ALREADY_STARTED		(EFI_ERROR_MASK | 20)
#define EFI_ABORTED			(EFI_ERROR_MASK | 21)
#define EFI_ICMP_ERROR			(EFI_ERROR_MASK | 22)
#define EFI_TFTP_ERROR			(EFI_ERROR_MASK | 23)
#define EFI_PROTOCOL_ERROR		(EFI_ERROR_MASK | 24)
#define EFI_INCOMPATIBLE_VERSION	(EFI_ERROR_MASK | 25)
#define EFI_SECURITY_VIOLATION		(EFI_ERROR_MASK | 26)
#define EFI_CRC_ERROR			(EFI_ERROR_MASK | 27)
#define EFI_END_OF_MEDIA		(EFI_ERROR_MASK | 28)
#define EFI_END_OF_FILE			(EFI_ERROR_MASK | 31)
#define EFI_INVALID_LANGUAGE		(EFI_ERROR_MASK | 32)
#define EFI_COMPROMISED_DATA		(EFI_ERROR_MASK | 33)
#define EFI_IP_ADDRESS_CONFLICT		(EFI_ERROR_MASK | 34)
#define EFI_HTTP_ERROR			(EFI_ERROR_MASK | 35)

#define EFI_WARN_DELETE_FAILURE	2

typedef unsigned long efi_status_t;
typedef u64 efi_physical_addr_t;
typedef u64 efi_virtual_addr_t;
typedef struct efi_object *efi_handle_t;

#define EFI_GUID(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
	{{ (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 Services 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,
	/*
	 * Non-volatile memory.
	 */
	EFI_PERSISTENT_MEMORY_TYPE,

	EFI_MAX_MEMORY_TYPE,
	EFI_TABLE_END,	/* For efi_build_mem_table() */
};

/* 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_UCE		((u64)0x0000000000000010ULL)	/* uncached, exported */
#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_NV		((u64)0x0000000000008000ULL)	/* non-volatile */
#define EFI_MEMORY_MORE_RELIABLE \
				((u64)0x0000000000010000ULL)	/* higher reliability */
#define EFI_MEMORY_RO		((u64)0x0000000000020000ULL)	/* read-only */
#define EFI_MEMORY_RUNTIME	((u64)0x8000000000000000ULL)	/* range requires runtime mapping */
#define EFI_MEM_DESC_VERSION	1

#define EFI_PAGE_SHIFT		12
#define EFI_PAGE_SIZE		(1ULL << EFI_PAGE_SHIFT)
#define EFI_PAGE_MASK		(EFI_PAGE_SIZE - 1)

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;
};

#define EFI_MEMORY_DESCRIPTOR_VERSION 1

/* 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,
	EFIET_GOP_MODE,
	EFIET_SYS_TABLE,

	/* 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[];
};

/**
 * struct efi_entry_gopmode - a GOP mode table passed to U-Boot
 *
 * @fb_base:	EFI's framebuffer base address
 * @fb_size:	EFI's framebuffer size
 * @info_size:	GOP mode info structure size
 * @info:	Start address of the GOP mode info structure
 */
struct efi_entry_gopmode {
	efi_physical_addr_t fb_base;
	/*
	 * Not like the ones in 'struct efi_gop_mode' which are 'unsigned
	 * long', @fb_size and @info_size have to be 'u64' here. As the EFI
	 * stub codes may have different bit size from the U-Boot payload,
	 * using 'long' will cause mismatch between the producer (stub) and
	 * the consumer (payload).
	 */
	u64 fb_size;
	u64 info_size;
	/*
	 * We cannot directly use 'struct efi_gop_mode_info info[]' here as
	 * it causes compiler to complain: array type has incomplete element
	 * type 'struct efi_gop_mode_info'.
	 */
	struct /* efi_gop_mode_info */ {
		u32 version;
		u32 width;
		u32 height;
		u32 pixel_format;
		u32 pixel_bitmask[4];
		u32 pixels_per_scanline;
	} info[];
};

/**
 * struct efi_entry_systable - system table passed to U-Boot
 *
 * @sys_table:	EFI system table address
 */
struct efi_entry_systable {
	efi_physical_addr_t sys_table;
};

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[];

/* Start and end of U-Boot image (for payload) */
extern char _binary_u_boot_bin_start[], _binary_u_boot_bin_end[];

/*
 * 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_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 */
Commit	Line	Data
04a0f563	1	/* SPDX-License-Identifier: GPL-2.0 */
867a6ac8 SG	2	/*
	3	* Extensible Firmware Interface
	4	* Based on 'Extensible Firmware Interface Specification' version 0.9,
	5	* April 30, 1999
	6	*
	7	* Copyright (C) 1999 VA Linux Systems
	8	* Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
	9	* Copyright (C) 1999, 2002-2003 Hewlett-Packard Co.
	10	* David Mosberger-Tang <davidm@hpl.hp.com>
	11	* Stephane Eranian <eranian@hpl.hp.com>
	12	*
	13	* From include/linux/efi.h in kernel 4.1 with some additions/subtractions
	14	*/
	15
	16	#ifndef _EFI_H
	17	#define _EFI_H
	18
a0b49bc3	19	#include <linux/linkage.h>
867a6ac8 SG	20	#include <linux/string.h>
	21	#include <linux/types.h>
	22
01866446 AG	23	/*
	24	* EFI on x86_64 uses the Microsoft ABI which is not the default for GCC.
	25	*
	26	* There are two scenarios for EFI on x86_64: building a 64-bit EFI stub
	27	* codes (CONFIG_EFI_STUB_64BIT) and building a 64-bit U-Boot (CONFIG_X86_64).
	28	* Either needs to be properly built with the '-m64' compiler flag, and hence
	29	* it is enough to only check the compiler provided define __x86_64__ here.
	30	*/
	31	#ifdef __x86_64__
96a8d409	32	#define EFIAPI __attribute__((ms_abi))
beb077a2 AG	33	#define efi_va_list __builtin_ms_va_list
	34	#define efi_va_start __builtin_ms_va_start
	35	#define efi_va_arg __builtin_va_arg
	36	#define efi_va_end __builtin_ms_va_end
96a8d409	37	#else
a0b49bc3	38	#define EFIAPI asmlinkage
beb077a2 AG	39	#define efi_va_list va_list
	40	#define efi_va_start va_start
	41	#define efi_va_arg va_arg
	42	#define efi_va_end va_end
01866446	43	#endif /* __x86_64__ */
96a8d409	44
1fdeacd3 BM	45	#define EFI32_LOADER_SIGNATURE "EL32"
	46	#define EFI64_LOADER_SIGNATURE "EL64"
	47
867a6ac8 SG	48	struct efi_device_path;
867a6ac8 SG	49
0d6ab32e RC	50	typedef struct {
0d6ab32e RC	51	u8 b[16];
4b05fe9c	52	} efi_guid_t __attribute__((aligned(8)));
0d6ab32e	53
01866446	54	#define EFI_BITS_PER_LONG (sizeof(long) * 8)
3e6cc35f	55
3c8ffb68 HS	56	/* Bit mask for EFI status code with error */
	57	#define EFI_ERROR_MASK (1UL << (EFI_BITS_PER_LONG - 1))
	58	/* Status codes returned by EFI protocols */
	59	#define EFI_SUCCESS 0
	60	#define EFI_LOAD_ERROR (EFI_ERROR_MASK \| 1)
	61	#define EFI_INVALID_PARAMETER (EFI_ERROR_MASK \| 2)
	62	#define EFI_UNSUPPORTED (EFI_ERROR_MASK \| 3)
	63	#define EFI_BAD_BUFFER_SIZE (EFI_ERROR_MASK \| 4)
	64	#define EFI_BUFFER_TOO_SMALL (EFI_ERROR_MASK \| 5)
	65	#define EFI_NOT_READY (EFI_ERROR_MASK \| 6)
	66	#define EFI_DEVICE_ERROR (EFI_ERROR_MASK \| 7)
	67	#define EFI_WRITE_PROTECTED (EFI_ERROR_MASK \| 8)
	68	#define EFI_OUT_OF_RESOURCES (EFI_ERROR_MASK \| 9)
	69	#define EFI_VOLUME_CORRUPTED (EFI_ERROR_MASK \| 10)
	70	#define EFI_VOLUME_FULL (EFI_ERROR_MASK \| 11)
	71	#define EFI_NO_MEDIA (EFI_ERROR_MASK \| 12)
	72	#define EFI_MEDIA_CHANGED (EFI_ERROR_MASK \| 13)
	73	#define EFI_NOT_FOUND (EFI_ERROR_MASK \| 14)
	74	#define EFI_ACCESS_DENIED (EFI_ERROR_MASK \| 15)
	75	#define EFI_NO_RESPONSE (EFI_ERROR_MASK \| 16)
	76	#define EFI_NO_MAPPING (EFI_ERROR_MASK \| 17)
	77	#define EFI_TIMEOUT (EFI_ERROR_MASK \| 18)
	78	#define EFI_NOT_STARTED (EFI_ERROR_MASK \| 19)
	79	#define EFI_ALREADY_STARTED (EFI_ERROR_MASK \| 20)
	80	#define EFI_ABORTED (EFI_ERROR_MASK \| 21)
	81	#define EFI_ICMP_ERROR (EFI_ERROR_MASK \| 22)
	82	#define EFI_TFTP_ERROR (EFI_ERROR_MASK \| 23)
	83	#define EFI_PROTOCOL_ERROR (EFI_ERROR_MASK \| 24)
	84	#define EFI_INCOMPATIBLE_VERSION (EFI_ERROR_MASK \| 25)
	85	#define EFI_SECURITY_VIOLATION (EFI_ERROR_MASK \| 26)
	86	#define EFI_CRC_ERROR (EFI_ERROR_MASK \| 27)
	87	#define EFI_END_OF_MEDIA (EFI_ERROR_MASK \| 28)
	88	#define EFI_END_OF_FILE (EFI_ERROR_MASK \| 31)
	89	#define EFI_INVALID_LANGUAGE (EFI_ERROR_MASK \| 32)
	90	#define EFI_COMPROMISED_DATA (EFI_ERROR_MASK \| 33)
	91	#define EFI_IP_ADDRESS_CONFLICT (EFI_ERROR_MASK \| 34)
	92	#define EFI_HTTP_ERROR (EFI_ERROR_MASK \| 35)
867a6ac8	93
2a92080d RC	94	#define EFI_WARN_DELETE_FAILURE 2
2a92080d RC	95
867a6ac8 SG	96	typedef unsigned long efi_status_t;
	97	typedef u64 efi_physical_addr_t;
	98	typedef u64 efi_virtual_addr_t;
faea1041	99	typedef struct efi_object *efi_handle_t;
867a6ac8 SG	100
867a6ac8 SG	101	#define EFI_GUID(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
867a6ac8 SG	102	{{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, \
	103	((a) >> 24) & 0xff, \
	104	(b) & 0xff, ((b) >> 8) & 0xff, \
	105	(c) & 0xff, ((c) >> 8) & 0xff, \
44ab2d32	106	(d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) } }
867a6ac8 SG	107
	108	/* Generic EFI table header */
	109	struct efi_table_hdr {
	110	u64 signature;
	111	u32 revision;
	112	u32 headersize;
	113	u32 crc32;
	114	u32 reserved;
	115	};
	116
	117	/* Enumeration of memory types introduced in UEFI */
	118	enum efi_mem_type {
	119	EFI_RESERVED_MEMORY_TYPE,
	120	/*
	121	* The code portions of a loaded application.
	122	* (Note that UEFI OS loaders are UEFI applications.)
	123	*/
	124	EFI_LOADER_CODE,
	125	/*
	126	* The data portions of a loaded application and
	127	* the default data allocation type used by an application
	128	* to allocate pool memory.
	129	*/
	130	EFI_LOADER_DATA,
	131	/* The code portions of a loaded Boot Services Driver */
	132	EFI_BOOT_SERVICES_CODE,
	133	/*
29f1a367	134	* The data portions of a loaded Boot Services Driver and
867a6ac8 SG	135	* the default data allocation type used by a Boot Services
	136	* Driver to allocate pool memory.
	137	*/
	138	EFI_BOOT_SERVICES_DATA,
	139	/* The code portions of a loaded Runtime Services Driver */
	140	EFI_RUNTIME_SERVICES_CODE,
	141	/*
	142	* The data portions of a loaded Runtime Services Driver and
	143	* the default data allocation type used by a Runtime Services
	144	* Driver to allocate pool memory.
	145	*/
	146	EFI_RUNTIME_SERVICES_DATA,
	147	/* Free (unallocated) memory */
	148	EFI_CONVENTIONAL_MEMORY,
	149	/* Memory in which errors have been detected */
	150	EFI_UNUSABLE_MEMORY,
	151	/* Memory that holds the ACPI tables */
	152	EFI_ACPI_RECLAIM_MEMORY,
	153	/* Address space reserved for use by the firmware */
	154	EFI_ACPI_MEMORY_NVS,
	155	/*
	156	* Used by system firmware to request that a memory-mapped IO region
	157	* be mapped by the OS to a virtual address so it can be accessed by
	158	* EFI runtime services.
	159	*/
	160	EFI_MMAP_IO,
	161	/*
	162	* System memory-mapped IO region that is used to translate
	163	* memory cycles to IO cycles by the processor.
	164	*/
	165	EFI_MMAP_IO_PORT,
	166	/*
	167	* Address space reserved by the firmware for code that is
	168	* part of the processor.
	169	*/
	170	EFI_PAL_CODE,
f12bcc91 HS	171	/*
	172	* Non-volatile memory.
	173	*/
	174	EFI_PERSISTENT_MEMORY_TYPE,
867a6ac8 SG	175
	176	EFI_MAX_MEMORY_TYPE,
	177	EFI_TABLE_END, /* For efi_build_mem_table() */
	178	};
	179
	180	/* Attribute values */
9b89183b ER	181	#define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */
	182	#define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */
	183	#define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */
	184	#define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */
	185	#define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */
	186	#define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */
	187	#define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */
	188	#define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */
c3a40cce ER	189	#define EFI_MEMORY_NV ((u64)0x0000000000008000ULL) /* non-volatile */
	190	#define EFI_MEMORY_MORE_RELIABLE \
	191	((u64)0x0000000000010000ULL) /* higher reliability */
	192	#define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */
9b89183b ER	193	#define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */
9b89183b ER	194	#define EFI_MEM_DESC_VERSION 1
867a6ac8 SG	195
867a6ac8 SG	196	#define EFI_PAGE_SHIFT 12
60fd8844	197	#define EFI_PAGE_SIZE (1ULL << EFI_PAGE_SHIFT)
2bb9b79d	198	#define EFI_PAGE_MASK (EFI_PAGE_SIZE - 1)
867a6ac8 SG	199
	200	struct efi_mem_desc {
	201	u32 type;
	202	u32 reserved;
	203	efi_physical_addr_t physical_start;
	204	efi_virtual_addr_t virtual_start;
	205	u64 num_pages;
	206	u64 attribute;
	207	};
	208
4c02c11d MYK	209	#define EFI_MEMORY_DESCRIPTOR_VERSION 1
4c02c11d MYK	210
867a6ac8 SG	211	/* Allocation types for calls to boottime->allocate_pages*/
	212	#define EFI_ALLOCATE_ANY_PAGES 0
	213	#define EFI_ALLOCATE_MAX_ADDRESS 1
	214	#define EFI_ALLOCATE_ADDRESS 2
	215	#define EFI_MAX_ALLOCATE_TYPE 3
	216
	217	/* Types and defines for Time Services */
	218	#define EFI_TIME_ADJUST_DAYLIGHT 0x1
	219	#define EFI_TIME_IN_DAYLIGHT 0x2
	220	#define EFI_UNSPECIFIED_TIMEZONE 0x07ff
	221
	222	struct efi_time {
	223	u16 year;
	224	u8 month;
	225	u8 day;
	226	u8 hour;
	227	u8 minute;
	228	u8 second;
	229	u8 pad1;
	230	u32 nanosecond;
	231	s16 timezone;
	232	u8 daylight;
	233	u8 pad2;
	234	};
	235
	236	struct efi_time_cap {
	237	u32 resolution;
	238	u32 accuracy;
	239	u8 sets_to_zero;
	240	};
	241
	242	enum efi_locate_search_type {
9f0770ff HS	243	ALL_HANDLES,
	244	BY_REGISTER_NOTIFY,
	245	BY_PROTOCOL
867a6ac8 SG	246	};
	247
	248	struct efi_open_protocol_info_entry {
	249	efi_handle_t agent_handle;
	250	efi_handle_t controller_handle;
	251	u32 attributes;
	252	u32 open_count;
	253	};
	254
	255	enum efi_entry_t {
	256	EFIET_END, /* Signals this is the last (empty) entry */
	257	EFIET_MEMORY_MAP,
d1fe9927	258	EFIET_GOP_MODE,
cbe503fb	259	EFIET_SYS_TABLE,
867a6ac8 SG	260
	261	/* Number of entries */
	262	EFIET_MEMORY_COUNT,
	263	};
	264
	265	#define EFI_TABLE_VERSION 1
	266
	267	/**
	268	* struct efi_info_hdr - Header for the EFI info table
	269	*
	270	* @version: EFI_TABLE_VERSION
	271	* @hdr_size: Size of this struct in bytes
	272	* @total_size: Total size of this header plus following data
	273	* @spare: Spare space for expansion
	274	*/
	275	struct efi_info_hdr {
	276	u32 version;
	277	u32 hdr_size;
	278	u32 total_size;
	279	u32 spare[5];
	280	};
	281
	282	/**
	283	* struct efi_entry_hdr - Header for a table entry
	284	*
	285	* @type: enum eft_entry_t
	286	* @size size of entry bytes excluding header and padding
	287	* @addr: address of this entry (0 if it follows the header )
	288	* @link: size of entry including header and padding
	289	* @spare1: Spare space for expansion
	290	* @spare2: Spare space for expansion
	291	*/
	292	struct efi_entry_hdr {
	293	u32 type;
	294	u32 size;
	295	u64 addr;
	296	u32 link;
	297	u32 spare1;
	298	u64 spare2;
	299	};
	300
	301	/**
	302	* struct efi_entry_memmap - a memory map table passed to U-Boot
	303	*
	304	* @version: EFI's memory map table version
	305	* @desc_size: EFI's size of each memory descriptor
	306	* @spare: Spare space for expansion
	307	* @desc: An array of descriptors, each @desc_size bytes apart
	308	*/
	309	struct efi_entry_memmap {
	310	u32 version;
	311	u32 desc_size;
	312	u64 spare;
	313	struct efi_mem_desc desc[];
	314	};
	315
d1fe9927 BM	316	/**
	317	* struct efi_entry_gopmode - a GOP mode table passed to U-Boot
	318	*
	319	* @fb_base: EFI's framebuffer base address
	320	* @fb_size: EFI's framebuffer size
	321	* @info_size: GOP mode info structure size
	322	* @info: Start address of the GOP mode info structure
	323	*/
	324	struct efi_entry_gopmode {
	325	efi_physical_addr_t fb_base;
	326	/*
	327	* Not like the ones in 'struct efi_gop_mode' which are 'unsigned
	328	* long', @fb_size and @info_size have to be 'u64' here. As the EFI
	329	* stub codes may have different bit size from the U-Boot payload,
	330	* using 'long' will cause mismatch between the producer (stub) and
	331	* the consumer (payload).
	332	*/
	333	u64 fb_size;
	334	u64 info_size;
	335	/*
	336	* We cannot directly use 'struct efi_gop_mode_info info[]' here as
	337	* it causes compiler to complain: array type has incomplete element
	338	* type 'struct efi_gop_mode_info'.
	339	*/
	340	struct /* efi_gop_mode_info */ {
	341	u32 version;
	342	u32 width;
	343	u32 height;
	344	u32 pixel_format;
	345	u32 pixel_bitmask[4];
	346	u32 pixels_per_scanline;
	347	} info[];
	348	};
	349
cbe503fb BM	350	/**
	351	* struct efi_entry_systable - system table passed to U-Boot
	352	*
	353	* @sys_table: EFI system table address
	354	*/
	355	struct efi_entry_systable {
	356	efi_physical_addr_t sys_table;
	357	};
	358
867a6ac8 SG	359	static inline struct efi_mem_desc *efi_get_next_mem_desc(
	360	struct efi_entry_memmap map, struct efi_mem_desc desc)
	361	{
	362	return (struct efi_mem_desc *)((ulong)desc + map->desc_size);
	363	}
	364
	365	struct efi_priv {
	366	efi_handle_t parent_image;
	367	struct efi_device_path *device_path;
	368	struct efi_system_table *sys_table;
	369	struct efi_boot_services *boot;
	370	struct efi_runtime_services *run;
	371	bool use_pool_for_malloc;
	372	unsigned long ram_base;
	373	unsigned int image_data_type;
	374	struct efi_info_hdr *info;
	375	unsigned int info_size;
	376	void *next_hdr;
	377	};
	378
	379	/* Base address of the EFI image */
	380	extern char image_base[];
	381
476476e7	382	/* Start and end of U-Boot image (for payload) */
3dc51ab0	383	extern char _binary_u_boot_bin_start[], _binary_u_boot_bin_end[];
476476e7	384
ad644e7c RC	385	/*
	386	* Variable Attributes
	387	*/
	388	#define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
	389	#define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
	390	#define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
	391	#define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
	392	#define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
	393	#define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
	394	#define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040
	395
	396	#define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE \| \
	397	EFI_VARIABLE_BOOTSERVICE_ACCESS \| \
	398	EFI_VARIABLE_RUNTIME_ACCESS \| \
	399	EFI_VARIABLE_HARDWARE_ERROR_RECORD \| \
	400	EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS \| \
	401	EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS \| \
	402	EFI_VARIABLE_APPEND_WRITE)
	403
867a6ac8 SG	404	/**
	405	* efi_get_sys_table() - Get access to the main EFI system table
	406	*
	407	* @return pointer to EFI system table
	408	*/
476476e7	409
867a6ac8 SG	410	struct efi_system_table *efi_get_sys_table(void);
	411
	412	/**
	413	* efi_get_ram_base() - Find the base of RAM
	414	*
	415	* This is used when U-Boot is built as an EFI application.
	416	*
	417	* @return the base of RAM as known to U-Boot
	418	*/
	419	unsigned long efi_get_ram_base(void);
	420
	421	/**
	422	* efi_init() - Set up ready for use of EFI boot services
	423	*
	424	* @priv: Pointer to our private EFI structure to fill in
	425	* @banner: Banner to display when starting
	426	* @image: The image handle passed to efi_main()
	427	* @sys_table: The EFI system table pointer passed to efi_main()
	428	*/
	429	int efi_init(struct efi_priv priv, const char banner, efi_handle_t image,
	430	struct efi_system_table *sys_table);
	431
	432	/**
	433	* efi_malloc() - Allocate some memory from EFI
	434	*
	435	* @priv: Pointer to private EFI structure
	436	* @size: Number of bytes to allocate
	437	* @retp: Return EFI status result
	438	* @return pointer to memory allocated, or NULL on error
	439	*/
	440	void efi_malloc(struct efi_priv priv, int size, efi_status_t *retp);
	441
	442	/**
	443	* efi_free() - Free memory allocated from EFI
	444	*
	445	* @priv: Pointer to private EFI structure
	446	* @ptr: Pointer to memory to free
	447	*/
	448	void efi_free(struct efi_priv priv, void ptr);
	449
	450	/**
	451	* efi_puts() - Write out a string to the EFI console
	452	*
	453	* @priv: Pointer to private EFI structure
	454	* @str: String to write (note this is a ASCII, not unicode)
	455	*/
	456	void efi_puts(struct efi_priv priv, const char str);
	457
	458	/**
	459	* efi_putc() - Write out a character to the EFI console
	460	*
	461	* @priv: Pointer to private EFI structure
	462	* @ch: Character to write (note this is not unicode)
	463	*/
	464	void efi_putc(struct efi_priv *priv, const char ch);
	465
	466	/**
	467	* efi_info_get() - get an entry from an EFI table
	468	*
	469	* @type: Entry type to search for
	470	* @datap: Returns pointer to entry data
	471	* @sizep: Returns pointer to entry size
	472	* @return 0 if OK, -ENODATA if there is no table, -ENOENT if there is no entry
	473	* of the requested type, -EPROTONOSUPPORT if the table has the wrong version
474	*/
475	int efi_info_get(enum efi_entry_t type, void *datap, int sizep);
476
477	/**
478	* efi_build_mem_table() - make a sorted copy of the memory table
479	*
480	* @map: Pointer to EFI memory map table
481	* @size: Size of table in bytes
482	* @skip_bs: True to skip boot-time memory and merge it with conventional
483	* memory. This will significantly reduce the number of table
484	* entries.
485	* @return pointer to the new table. It should be freed with free() by the
486	* caller
487	*/
488	void efi_build_mem_table(struct efi_entry_memmap map, int size, bool skip_bs);
489
490	#endif /* _LINUX_EFI_H */