1284 lines
42 KiB
C
1284 lines
42 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_EFI_H
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#define _LINUX_EFI_H
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/*
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* Extensible Firmware Interface
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* Based on 'Extensible Firmware Interface Specification' version 0.9, April 30, 1999
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*
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* Copyright (C) 1999 VA Linux Systems
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* Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
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* Copyright (C) 1999, 2002-2003 Hewlett-Packard Co.
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* David Mosberger-Tang <davidm@hpl.hp.com>
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* Stephane Eranian <eranian@hpl.hp.com>
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*/
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#include <linux/init.h>
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#include <linux/string.h>
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#include <linux/time.h>
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#include <linux/types.h>
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#include <linux/proc_fs.h>
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#include <linux/rtc.h>
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#include <linux/ioport.h>
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#include <linux/pfn.h>
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#include <linux/pstore.h>
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#include <linux/range.h>
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#include <linux/reboot.h>
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#include <linux/uuid.h>
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#include <linux/screen_info.h>
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#include <asm/page.h>
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#define EFI_SUCCESS 0
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#define EFI_LOAD_ERROR ( 1 | (1UL << (BITS_PER_LONG-1)))
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#define EFI_INVALID_PARAMETER ( 2 | (1UL << (BITS_PER_LONG-1)))
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#define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1)))
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#define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1)))
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#define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1)))
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#define EFI_NOT_READY ( 6 | (1UL << (BITS_PER_LONG-1)))
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#define EFI_DEVICE_ERROR ( 7 | (1UL << (BITS_PER_LONG-1)))
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#define EFI_WRITE_PROTECTED ( 8 | (1UL << (BITS_PER_LONG-1)))
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#define EFI_OUT_OF_RESOURCES ( 9 | (1UL << (BITS_PER_LONG-1)))
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#define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1)))
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#define EFI_TIMEOUT (18 | (1UL << (BITS_PER_LONG-1)))
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#define EFI_ABORTED (21 | (1UL << (BITS_PER_LONG-1)))
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#define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1)))
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typedef unsigned long efi_status_t;
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typedef u8 efi_bool_t;
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typedef u16 efi_char16_t; /* UNICODE character */
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typedef u64 efi_physical_addr_t;
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typedef void *efi_handle_t;
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#if defined(CONFIG_X86_64)
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#define __efiapi __attribute__((ms_abi))
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#elif defined(CONFIG_X86_32)
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#define __efiapi __attribute__((regparm(0)))
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#else
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#define __efiapi
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#endif
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/*
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* The UEFI spec and EDK2 reference implementation both define EFI_GUID as
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* struct { u32 a; u16; b; u16 c; u8 d[8]; }; and so the implied alignment
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* is 32 bits not 8 bits like our guid_t. In some cases (i.e., on 32-bit ARM),
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* this means that firmware services invoked by the kernel may assume that
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* efi_guid_t* arguments are 32-bit aligned, and use memory accessors that
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* do not tolerate misalignment. So let's set the minimum alignment to 32 bits.
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*
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* Note that the UEFI spec as well as some comments in the EDK2 code base
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* suggest that EFI_GUID should be 64-bit aligned, but this appears to be
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* a mistake, given that no code seems to exist that actually enforces that
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* or relies on it.
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*/
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typedef guid_t efi_guid_t __aligned(__alignof__(u32));
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#define EFI_GUID(a, b, c, d...) (efi_guid_t){ { \
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(a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
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(b) & 0xff, ((b) >> 8) & 0xff, \
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(c) & 0xff, ((c) >> 8) & 0xff, d } }
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/*
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* Generic EFI table header
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*/
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typedef struct {
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u64 signature;
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u32 revision;
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u32 headersize;
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u32 crc32;
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u32 reserved;
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} efi_table_hdr_t;
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/*
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* Memory map descriptor:
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*/
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/* Memory types: */
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#define EFI_RESERVED_TYPE 0
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#define EFI_LOADER_CODE 1
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#define EFI_LOADER_DATA 2
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#define EFI_BOOT_SERVICES_CODE 3
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#define EFI_BOOT_SERVICES_DATA 4
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#define EFI_RUNTIME_SERVICES_CODE 5
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#define EFI_RUNTIME_SERVICES_DATA 6
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#define EFI_CONVENTIONAL_MEMORY 7
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#define EFI_UNUSABLE_MEMORY 8
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#define EFI_ACPI_RECLAIM_MEMORY 9
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#define EFI_ACPI_MEMORY_NVS 10
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#define EFI_MEMORY_MAPPED_IO 11
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#define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12
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#define EFI_PAL_CODE 13
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#define EFI_PERSISTENT_MEMORY 14
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#define EFI_MAX_MEMORY_TYPE 15
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/* Attribute values: */
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#define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */
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#define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */
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#define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */
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#define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */
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#define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */
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#define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */
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#define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */
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#define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */
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#define EFI_MEMORY_NV ((u64)0x0000000000008000ULL) /* non-volatile */
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#define EFI_MEMORY_MORE_RELIABLE \
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((u64)0x0000000000010000ULL) /* higher reliability */
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#define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */
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#define EFI_MEMORY_SP ((u64)0x0000000000040000ULL) /* soft reserved */
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#define EFI_MEMORY_CPU_CRYPTO ((u64)0x0000000000080000ULL) /* supports encryption */
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#define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */
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#define EFI_MEMORY_DESCRIPTOR_VERSION 1
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#define EFI_PAGE_SHIFT 12
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#define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT)
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#define EFI_PAGES_MAX (U64_MAX >> EFI_PAGE_SHIFT)
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typedef struct {
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u32 type;
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u32 pad;
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u64 phys_addr;
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u64 virt_addr;
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u64 num_pages;
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u64 attribute;
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} efi_memory_desc_t;
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typedef struct {
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efi_guid_t guid;
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u32 headersize;
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u32 flags;
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u32 imagesize;
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} efi_capsule_header_t;
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/*
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* EFI capsule flags
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*/
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#define EFI_CAPSULE_PERSIST_ACROSS_RESET 0x00010000
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#define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000
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#define EFI_CAPSULE_INITIATE_RESET 0x00040000
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struct capsule_info {
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efi_capsule_header_t header;
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efi_capsule_header_t *capsule;
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int reset_type;
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long index;
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size_t count;
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size_t total_size;
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struct page **pages;
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phys_addr_t *phys;
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size_t page_bytes_remain;
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};
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int efi_capsule_setup_info(struct capsule_info *cap_info, void *kbuff,
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size_t hdr_bytes);
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int __efi_capsule_setup_info(struct capsule_info *cap_info);
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/*
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* Types and defines for Time Services
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*/
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#define EFI_TIME_ADJUST_DAYLIGHT 0x1
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#define EFI_TIME_IN_DAYLIGHT 0x2
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#define EFI_UNSPECIFIED_TIMEZONE 0x07ff
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typedef struct {
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u16 year;
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u8 month;
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u8 day;
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u8 hour;
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u8 minute;
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u8 second;
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u8 pad1;
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u32 nanosecond;
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s16 timezone;
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u8 daylight;
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u8 pad2;
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} efi_time_t;
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typedef struct {
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u32 resolution;
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u32 accuracy;
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u8 sets_to_zero;
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} efi_time_cap_t;
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typedef union efi_boot_services efi_boot_services_t;
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/*
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* Types and defines for EFI ResetSystem
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*/
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#define EFI_RESET_COLD 0
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#define EFI_RESET_WARM 1
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#define EFI_RESET_SHUTDOWN 2
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/*
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* EFI Runtime Services table
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*/
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#define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
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#define EFI_RUNTIME_SERVICES_REVISION 0x00010000
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typedef struct {
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efi_table_hdr_t hdr;
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u32 get_time;
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u32 set_time;
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u32 get_wakeup_time;
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u32 set_wakeup_time;
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u32 set_virtual_address_map;
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u32 convert_pointer;
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u32 get_variable;
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u32 get_next_variable;
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u32 set_variable;
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u32 get_next_high_mono_count;
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u32 reset_system;
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u32 update_capsule;
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u32 query_capsule_caps;
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u32 query_variable_info;
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} efi_runtime_services_32_t;
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typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc);
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typedef efi_status_t efi_set_time_t (efi_time_t *tm);
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typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending,
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efi_time_t *tm);
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typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm);
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typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr,
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unsigned long *data_size, void *data);
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typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name,
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efi_guid_t *vendor);
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typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor,
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u32 attr, unsigned long data_size,
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void *data);
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typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count);
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typedef void efi_reset_system_t (int reset_type, efi_status_t status,
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unsigned long data_size, efi_char16_t *data);
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typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size,
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unsigned long descriptor_size,
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u32 descriptor_version,
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efi_memory_desc_t *virtual_map);
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typedef efi_status_t efi_query_variable_info_t(u32 attr,
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u64 *storage_space,
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u64 *remaining_space,
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u64 *max_variable_size);
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typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules,
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unsigned long count,
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unsigned long sg_list);
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typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules,
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unsigned long count,
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u64 *max_size,
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int *reset_type);
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typedef efi_status_t efi_query_variable_store_t(u32 attributes,
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unsigned long size,
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bool nonblocking);
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typedef union {
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struct {
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efi_table_hdr_t hdr;
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efi_get_time_t __efiapi *get_time;
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efi_set_time_t __efiapi *set_time;
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efi_get_wakeup_time_t __efiapi *get_wakeup_time;
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efi_set_wakeup_time_t __efiapi *set_wakeup_time;
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efi_set_virtual_address_map_t __efiapi *set_virtual_address_map;
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void *convert_pointer;
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efi_get_variable_t __efiapi *get_variable;
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efi_get_next_variable_t __efiapi *get_next_variable;
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efi_set_variable_t __efiapi *set_variable;
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efi_get_next_high_mono_count_t __efiapi *get_next_high_mono_count;
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efi_reset_system_t __efiapi *reset_system;
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efi_update_capsule_t __efiapi *update_capsule;
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efi_query_capsule_caps_t __efiapi *query_capsule_caps;
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efi_query_variable_info_t __efiapi *query_variable_info;
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};
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efi_runtime_services_32_t mixed_mode;
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} efi_runtime_services_t;
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void efi_native_runtime_setup(void);
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/*
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* EFI Configuration Table and GUID definitions
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*
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* These are all defined in a single line to make them easier to
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* grep for and to see them at a glance - while still having a
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* similar structure to the definitions in the spec.
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*
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* Here's how they are structured:
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*
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* GUID: 12345678-1234-1234-1234-123456789012
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* Spec:
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* #define EFI_SOME_PROTOCOL_GUID \
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* {0x12345678,0x1234,0x1234,\
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* {0x12,0x34,0x12,0x34,0x56,0x78,0x90,0x12}}
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* Here:
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* #define SOME_PROTOCOL_GUID EFI_GUID(0x12345678, 0x1234, 0x1234, 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12)
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* ^ tabs ^extra space
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*
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* Note that the 'extra space' separates the values at the same place
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* where the UEFI SPEC breaks the line.
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*/
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#define NULL_GUID EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
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#define MPS_TABLE_GUID EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
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#define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
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#define ACPI_20_TABLE_GUID EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81)
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#define SMBIOS_TABLE_GUID EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
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#define SMBIOS3_TABLE_GUID EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94)
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#define SAL_SYSTEM_TABLE_GUID EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
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#define HCDP_TABLE_GUID EFI_GUID(0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98)
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#define UGA_IO_PROTOCOL_GUID EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2)
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#define EFI_GLOBAL_VARIABLE_GUID EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c)
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#define UV_SYSTEM_TABLE_GUID EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93)
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#define LINUX_EFI_CRASH_GUID EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0)
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#define LOADED_IMAGE_PROTOCOL_GUID EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
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#define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a)
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#define EFI_UGA_PROTOCOL_GUID EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39)
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#define EFI_PCI_IO_PROTOCOL_GUID EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a)
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#define EFI_FILE_INFO_ID EFI_GUID(0x09576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
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#define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80)
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#define EFI_FILE_SYSTEM_GUID EFI_GUID(0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
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#define DEVICE_TREE_GUID EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
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#define EFI_PROPERTIES_TABLE_GUID EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5)
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#define EFI_RNG_PROTOCOL_GUID EFI_GUID(0x3152bca5, 0xeade, 0x433d, 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
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#define EFI_RNG_ALGORITHM_RAW EFI_GUID(0xe43176d7, 0xb6e8, 0x4827, 0xb7, 0x84, 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61)
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#define EFI_MEMORY_ATTRIBUTES_TABLE_GUID EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20)
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#define EFI_CONSOLE_OUT_DEVICE_GUID EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
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#define APPLE_PROPERTIES_PROTOCOL_GUID EFI_GUID(0x91bd12fe, 0xf6c3, 0x44fb, 0xa5, 0xb7, 0x51, 0x22, 0xab, 0x30, 0x3a, 0xe0)
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#define EFI_TCG2_PROTOCOL_GUID EFI_GUID(0x607f766c, 0x7455, 0x42be, 0x93, 0x0b, 0xe4, 0xd7, 0x6d, 0xb2, 0x72, 0x0f)
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#define EFI_LOAD_FILE_PROTOCOL_GUID EFI_GUID(0x56ec3091, 0x954c, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
|
|
#define EFI_LOAD_FILE2_PROTOCOL_GUID EFI_GUID(0x4006c0c1, 0xfcb3, 0x403e, 0x99, 0x6d, 0x4a, 0x6c, 0x87, 0x24, 0xe0, 0x6d)
|
|
#define EFI_RT_PROPERTIES_TABLE_GUID EFI_GUID(0xeb66918a, 0x7eef, 0x402a, 0x84, 0x2e, 0x93, 0x1d, 0x21, 0xc3, 0x8a, 0xe9)
|
|
|
|
#define EFI_IMAGE_SECURITY_DATABASE_GUID EFI_GUID(0xd719b2cb, 0x3d3a, 0x4596, 0xa3, 0xbc, 0xda, 0xd0, 0x0e, 0x67, 0x65, 0x6f)
|
|
#define EFI_SHIM_LOCK_GUID EFI_GUID(0x605dab50, 0xe046, 0x4300, 0xab, 0xb6, 0x3d, 0xd8, 0x10, 0xdd, 0x8b, 0x23)
|
|
|
|
#define EFI_CERT_SHA256_GUID EFI_GUID(0xc1c41626, 0x504c, 0x4092, 0xac, 0xa9, 0x41, 0xf9, 0x36, 0x93, 0x43, 0x28)
|
|
#define EFI_CERT_X509_GUID EFI_GUID(0xa5c059a1, 0x94e4, 0x4aa7, 0x87, 0xb5, 0xab, 0x15, 0x5c, 0x2b, 0xf0, 0x72)
|
|
#define EFI_CERT_X509_SHA256_GUID EFI_GUID(0x3bd2a492, 0x96c0, 0x4079, 0xb4, 0x20, 0xfc, 0xf9, 0x8e, 0xf1, 0x03, 0xed)
|
|
|
|
/*
|
|
* This GUID is used to pass to the kernel proper the struct screen_info
|
|
* structure that was populated by the stub based on the GOP protocol instance
|
|
* associated with ConOut
|
|
*/
|
|
#define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, 0xb9, 0x0e, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95)
|
|
#define LINUX_EFI_ARM_CPU_STATE_TABLE_GUID EFI_GUID(0xef79e4aa, 0x3c3d, 0x4989, 0xb9, 0x02, 0x07, 0xa9, 0x43, 0xe5, 0x50, 0xd2)
|
|
#define LINUX_EFI_LOADER_ENTRY_GUID EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f)
|
|
#define LINUX_EFI_RANDOM_SEED_TABLE_GUID EFI_GUID(0x1ce1e5bc, 0x7ceb, 0x42f2, 0x81, 0xe5, 0x8a, 0xad, 0xf1, 0x80, 0xf5, 0x7b)
|
|
#define LINUX_EFI_TPM_EVENT_LOG_GUID EFI_GUID(0xb7799cb0, 0xeca2, 0x4943, 0x96, 0x67, 0x1f, 0xae, 0x07, 0xb7, 0x47, 0xfa)
|
|
#define LINUX_EFI_TPM_FINAL_LOG_GUID EFI_GUID(0x1e2ed096, 0x30e2, 0x4254, 0xbd, 0x89, 0x86, 0x3b, 0xbe, 0xf8, 0x23, 0x25)
|
|
#define LINUX_EFI_MEMRESERVE_TABLE_GUID EFI_GUID(0x888eb0c6, 0x8ede, 0x4ff5, 0xa8, 0xf0, 0x9a, 0xee, 0x5c, 0xb9, 0x77, 0xc2)
|
|
#define LINUX_EFI_INITRD_MEDIA_GUID EFI_GUID(0x5568e427, 0x68fc, 0x4f3d, 0xac, 0x74, 0xca, 0x55, 0x52, 0x31, 0xcc, 0x68)
|
|
#define LINUX_EFI_MOK_VARIABLE_TABLE_GUID EFI_GUID(0xc451ed2b, 0x9694, 0x45d3, 0xba, 0xba, 0xed, 0x9f, 0x89, 0x88, 0xa3, 0x89)
|
|
|
|
/* OEM GUIDs */
|
|
#define DELLEMC_EFI_RCI2_TABLE_GUID EFI_GUID(0x2d9f28a2, 0xa886, 0x456a, 0x97, 0xa8, 0xf1, 0x1e, 0xf2, 0x4f, 0xf4, 0x55)
|
|
|
|
typedef struct {
|
|
efi_guid_t guid;
|
|
u64 table;
|
|
} efi_config_table_64_t;
|
|
|
|
typedef struct {
|
|
efi_guid_t guid;
|
|
u32 table;
|
|
} efi_config_table_32_t;
|
|
|
|
typedef union {
|
|
struct {
|
|
efi_guid_t guid;
|
|
void *table;
|
|
};
|
|
efi_config_table_32_t mixed_mode;
|
|
} efi_config_table_t;
|
|
|
|
typedef struct {
|
|
efi_guid_t guid;
|
|
unsigned long *ptr;
|
|
const char name[16];
|
|
} efi_config_table_type_t;
|
|
|
|
#define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
|
|
|
|
#define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30))
|
|
#define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20))
|
|
#define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10))
|
|
#define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00))
|
|
#define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10))
|
|
#define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02))
|
|
|
|
typedef struct {
|
|
efi_table_hdr_t hdr;
|
|
u64 fw_vendor; /* physical addr of CHAR16 vendor string */
|
|
u32 fw_revision;
|
|
u32 __pad1;
|
|
u64 con_in_handle;
|
|
u64 con_in;
|
|
u64 con_out_handle;
|
|
u64 con_out;
|
|
u64 stderr_handle;
|
|
u64 stderr;
|
|
u64 runtime;
|
|
u64 boottime;
|
|
u32 nr_tables;
|
|
u32 __pad2;
|
|
u64 tables;
|
|
} efi_system_table_64_t;
|
|
|
|
typedef struct {
|
|
efi_table_hdr_t hdr;
|
|
u32 fw_vendor; /* physical addr of CHAR16 vendor string */
|
|
u32 fw_revision;
|
|
u32 con_in_handle;
|
|
u32 con_in;
|
|
u32 con_out_handle;
|
|
u32 con_out;
|
|
u32 stderr_handle;
|
|
u32 stderr;
|
|
u32 runtime;
|
|
u32 boottime;
|
|
u32 nr_tables;
|
|
u32 tables;
|
|
} efi_system_table_32_t;
|
|
|
|
typedef union efi_simple_text_input_protocol efi_simple_text_input_protocol_t;
|
|
typedef union efi_simple_text_output_protocol efi_simple_text_output_protocol_t;
|
|
|
|
typedef union {
|
|
struct {
|
|
efi_table_hdr_t hdr;
|
|
unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */
|
|
u32 fw_revision;
|
|
unsigned long con_in_handle;
|
|
efi_simple_text_input_protocol_t *con_in;
|
|
unsigned long con_out_handle;
|
|
efi_simple_text_output_protocol_t *con_out;
|
|
unsigned long stderr_handle;
|
|
unsigned long stderr;
|
|
efi_runtime_services_t *runtime;
|
|
efi_boot_services_t *boottime;
|
|
unsigned long nr_tables;
|
|
unsigned long tables;
|
|
};
|
|
efi_system_table_32_t mixed_mode;
|
|
} efi_system_table_t;
|
|
|
|
/*
|
|
* Architecture independent structure for describing a memory map for the
|
|
* benefit of efi_memmap_init_early(), and for passing context between
|
|
* efi_memmap_alloc() and efi_memmap_install().
|
|
*/
|
|
struct efi_memory_map_data {
|
|
phys_addr_t phys_map;
|
|
unsigned long size;
|
|
unsigned long desc_version;
|
|
unsigned long desc_size;
|
|
unsigned long flags;
|
|
};
|
|
|
|
struct efi_memory_map {
|
|
phys_addr_t phys_map;
|
|
void *map;
|
|
void *map_end;
|
|
int nr_map;
|
|
unsigned long desc_version;
|
|
unsigned long desc_size;
|
|
#define EFI_MEMMAP_LATE (1UL << 0)
|
|
#define EFI_MEMMAP_MEMBLOCK (1UL << 1)
|
|
#define EFI_MEMMAP_SLAB (1UL << 2)
|
|
unsigned long flags;
|
|
};
|
|
|
|
struct efi_mem_range {
|
|
struct range range;
|
|
u64 attribute;
|
|
};
|
|
|
|
typedef struct {
|
|
u32 version;
|
|
u32 length;
|
|
u64 memory_protection_attribute;
|
|
} efi_properties_table_t;
|
|
|
|
#define EFI_PROPERTIES_TABLE_VERSION 0x00010000
|
|
#define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1
|
|
|
|
typedef struct {
|
|
u16 version;
|
|
u16 length;
|
|
u32 runtime_services_supported;
|
|
} efi_rt_properties_table_t;
|
|
|
|
#define EFI_RT_PROPERTIES_TABLE_VERSION 0x1
|
|
|
|
#define EFI_INVALID_TABLE_ADDR (~0UL)
|
|
|
|
typedef struct {
|
|
u32 version;
|
|
u32 num_entries;
|
|
u32 desc_size;
|
|
u32 reserved;
|
|
efi_memory_desc_t entry[0];
|
|
} efi_memory_attributes_table_t;
|
|
|
|
typedef struct {
|
|
efi_guid_t signature_owner;
|
|
u8 signature_data[];
|
|
} efi_signature_data_t;
|
|
|
|
typedef struct {
|
|
efi_guid_t signature_type;
|
|
u32 signature_list_size;
|
|
u32 signature_header_size;
|
|
u32 signature_size;
|
|
u8 signature_header[];
|
|
/* efi_signature_data_t signatures[][] */
|
|
} efi_signature_list_t;
|
|
|
|
typedef u8 efi_sha256_hash_t[32];
|
|
|
|
typedef struct {
|
|
efi_sha256_hash_t to_be_signed_hash;
|
|
efi_time_t time_of_revocation;
|
|
} efi_cert_x509_sha256_t;
|
|
|
|
extern unsigned long __ro_after_init efi_rng_seed; /* RNG Seed table */
|
|
|
|
/*
|
|
* All runtime access to EFI goes through this structure:
|
|
*/
|
|
extern struct efi {
|
|
const efi_runtime_services_t *runtime; /* EFI runtime services table */
|
|
unsigned int runtime_version; /* Runtime services version */
|
|
unsigned int runtime_supported_mask;
|
|
|
|
unsigned long acpi; /* ACPI table (IA64 ext 0.71) */
|
|
unsigned long acpi20; /* ACPI table (ACPI 2.0) */
|
|
unsigned long smbios; /* SMBIOS table (32 bit entry point) */
|
|
unsigned long smbios3; /* SMBIOS table (64 bit entry point) */
|
|
unsigned long esrt; /* ESRT table */
|
|
unsigned long tpm_log; /* TPM2 Event Log table */
|
|
unsigned long tpm_final_log; /* TPM2 Final Events Log table */
|
|
unsigned long mokvar_table; /* MOK variable config 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_set_variable_t *set_variable_nonblocking;
|
|
efi_query_variable_info_t *query_variable_info;
|
|
efi_query_variable_info_t *query_variable_info_nonblocking;
|
|
efi_update_capsule_t *update_capsule;
|
|
efi_query_capsule_caps_t *query_capsule_caps;
|
|
efi_get_next_high_mono_count_t *get_next_high_mono_count;
|
|
efi_reset_system_t *reset_system;
|
|
|
|
struct efi_memory_map memmap;
|
|
unsigned long flags;
|
|
} efi;
|
|
|
|
#define EFI_RT_SUPPORTED_GET_TIME 0x0001
|
|
#define EFI_RT_SUPPORTED_SET_TIME 0x0002
|
|
#define EFI_RT_SUPPORTED_GET_WAKEUP_TIME 0x0004
|
|
#define EFI_RT_SUPPORTED_SET_WAKEUP_TIME 0x0008
|
|
#define EFI_RT_SUPPORTED_GET_VARIABLE 0x0010
|
|
#define EFI_RT_SUPPORTED_GET_NEXT_VARIABLE_NAME 0x0020
|
|
#define EFI_RT_SUPPORTED_SET_VARIABLE 0x0040
|
|
#define EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP 0x0080
|
|
#define EFI_RT_SUPPORTED_CONVERT_POINTER 0x0100
|
|
#define EFI_RT_SUPPORTED_GET_NEXT_HIGH_MONOTONIC_COUNT 0x0200
|
|
#define EFI_RT_SUPPORTED_RESET_SYSTEM 0x0400
|
|
#define EFI_RT_SUPPORTED_UPDATE_CAPSULE 0x0800
|
|
#define EFI_RT_SUPPORTED_QUERY_CAPSULE_CAPABILITIES 0x1000
|
|
#define EFI_RT_SUPPORTED_QUERY_VARIABLE_INFO 0x2000
|
|
|
|
#define EFI_RT_SUPPORTED_ALL 0x3fff
|
|
|
|
#define EFI_RT_SUPPORTED_TIME_SERVICES 0x000f
|
|
#define EFI_RT_SUPPORTED_VARIABLE_SERVICES 0x0070
|
|
|
|
extern struct mm_struct efi_mm;
|
|
|
|
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_to_str(efi_guid_t *guid, char *out)
|
|
{
|
|
sprintf(out, "%pUl", guid->b);
|
|
return out;
|
|
}
|
|
|
|
extern void efi_init (void);
|
|
#ifdef CONFIG_EFI
|
|
extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */
|
|
#else
|
|
static inline void efi_enter_virtual_mode (void) {}
|
|
#endif
|
|
#ifdef CONFIG_X86
|
|
extern efi_status_t efi_query_variable_store(u32 attributes,
|
|
unsigned long size,
|
|
bool nonblocking);
|
|
#else
|
|
|
|
static inline efi_status_t efi_query_variable_store(u32 attributes,
|
|
unsigned long size,
|
|
bool nonblocking)
|
|
{
|
|
return EFI_SUCCESS;
|
|
}
|
|
#endif
|
|
extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr);
|
|
|
|
extern int __init __efi_memmap_init(struct efi_memory_map_data *data);
|
|
extern int __init efi_memmap_init_early(struct efi_memory_map_data *data);
|
|
extern int __init efi_memmap_init_late(phys_addr_t addr, unsigned long size);
|
|
extern void __init efi_memmap_unmap(void);
|
|
|
|
#ifdef CONFIG_EFI_ESRT
|
|
extern void __init efi_esrt_init(void);
|
|
#else
|
|
static inline void efi_esrt_init(void) { }
|
|
#endif
|
|
extern int efi_config_parse_tables(const efi_config_table_t *config_tables,
|
|
int count,
|
|
const efi_config_table_type_t *arch_tables);
|
|
extern int efi_systab_check_header(const efi_table_hdr_t *systab_hdr,
|
|
int min_major_version);
|
|
extern void efi_systab_report_header(const efi_table_hdr_t *systab_hdr,
|
|
unsigned long fw_vendor);
|
|
extern u64 efi_get_iobase (void);
|
|
extern int 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 u64 efi_mem_desc_end(efi_memory_desc_t *md);
|
|
extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md);
|
|
extern void efi_mem_reserve(phys_addr_t addr, u64 size);
|
|
extern int efi_mem_reserve_persistent(phys_addr_t addr, u64 size);
|
|
extern void efi_initialize_iomem_resources(struct resource *code_resource,
|
|
struct resource *data_resource, struct resource *bss_resource);
|
|
extern u64 efi_get_fdt_params(struct efi_memory_map_data *data);
|
|
extern struct kobject *efi_kobj;
|
|
|
|
extern int efi_reboot_quirk_mode;
|
|
extern bool efi_poweroff_required(void);
|
|
|
|
#ifdef CONFIG_EFI_FAKE_MEMMAP
|
|
extern void __init efi_fake_memmap(void);
|
|
#else
|
|
static inline void efi_fake_memmap(void) { }
|
|
#endif
|
|
|
|
extern unsigned long efi_mem_attr_table;
|
|
|
|
/*
|
|
* efi_memattr_perm_setter - arch specific callback function passed into
|
|
* efi_memattr_apply_permissions() that updates the
|
|
* mapping permissions described by the second
|
|
* argument in the page tables referred to by the
|
|
* first argument.
|
|
*/
|
|
typedef int (*efi_memattr_perm_setter)(struct mm_struct *, efi_memory_desc_t *);
|
|
|
|
extern int efi_memattr_init(void);
|
|
extern int efi_memattr_apply_permissions(struct mm_struct *mm,
|
|
efi_memattr_perm_setter fn);
|
|
|
|
/*
|
|
* efi_early_memdesc_ptr - get the n-th EFI memmap descriptor
|
|
* @map: the start of efi memmap
|
|
* @desc_size: the size of space for each EFI memmap descriptor
|
|
* @n: the index of efi memmap descriptor
|
|
*
|
|
* EFI boot service provides the GetMemoryMap() function to get a copy of the
|
|
* current memory map which is an array of memory descriptors, each of
|
|
* which describes a contiguous block of memory. It also gets the size of the
|
|
* map, and the size of each descriptor, etc.
|
|
*
|
|
* Note that per section 6.2 of UEFI Spec 2.6 Errata A, the returned size of
|
|
* each descriptor might not be equal to sizeof(efi_memory_memdesc_t),
|
|
* since efi_memory_memdesc_t may be extended in the future. Thus the OS
|
|
* MUST use the returned size of the descriptor to find the start of each
|
|
* efi_memory_memdesc_t in the memory map array. This should only be used
|
|
* during bootup since for_each_efi_memory_desc_xxx() is available after the
|
|
* kernel initializes the EFI subsystem to set up struct efi_memory_map.
|
|
*/
|
|
#define efi_early_memdesc_ptr(map, desc_size, n) \
|
|
(efi_memory_desc_t *)((void *)(map) + ((n) * (desc_size)))
|
|
|
|
/* Iterate through an efi_memory_map */
|
|
#define for_each_efi_memory_desc_in_map(m, md) \
|
|
for ((md) = (m)->map; \
|
|
(md) && ((void *)(md) + (m)->desc_size) <= (m)->map_end; \
|
|
(md) = (void *)(md) + (m)->desc_size)
|
|
|
|
/**
|
|
* for_each_efi_memory_desc - iterate over descriptors in efi.memmap
|
|
* @md: the efi_memory_desc_t * iterator
|
|
*
|
|
* Once the loop finishes @md must not be accessed.
|
|
*/
|
|
#define for_each_efi_memory_desc(md) \
|
|
for_each_efi_memory_desc_in_map(&efi.memmap, md)
|
|
|
|
/*
|
|
* Format an EFI memory descriptor's type and attributes to a user-provided
|
|
* character buffer, as per snprintf(), and return the buffer.
|
|
*/
|
|
char * __init efi_md_typeattr_format(char *buf, size_t size,
|
|
const efi_memory_desc_t *md);
|
|
|
|
|
|
typedef void (*efi_element_handler_t)(const char *source,
|
|
const void *element_data,
|
|
size_t element_size);
|
|
extern int __init parse_efi_signature_list(
|
|
const char *source,
|
|
const void *data, size_t size,
|
|
efi_element_handler_t (*get_handler_for_guid)(const efi_guid_t *));
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
#define EFI_BOOT 0 /* Were we booted from EFI? */
|
|
#define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */
|
|
#define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */
|
|
#define EFI_MEMMAP 4 /* Can we use EFI memory map? */
|
|
#define EFI_64BIT 5 /* Is the firmware 64-bit? */
|
|
#define EFI_PARAVIRT 6 /* Access is via a paravirt interface */
|
|
#define EFI_ARCH_1 7 /* First arch-specific bit */
|
|
#define EFI_DBG 8 /* Print additional debug info at runtime */
|
|
#define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */
|
|
#define EFI_MEM_ATTR 10 /* Did firmware publish an EFI_MEMORY_ATTRIBUTES table? */
|
|
#define EFI_MEM_NO_SOFT_RESERVE 11 /* Is the kernel configured to ignore soft reservations? */
|
|
#define EFI_PRESERVE_BS_REGIONS 12 /* Are EFI boot-services memory segments available? */
|
|
|
|
#ifdef CONFIG_EFI
|
|
/*
|
|
* Test whether the above EFI_* bits are enabled.
|
|
*/
|
|
static inline bool efi_enabled(int feature)
|
|
{
|
|
return test_bit(feature, &efi.flags) != 0;
|
|
}
|
|
extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused);
|
|
|
|
bool __pure __efi_soft_reserve_enabled(void);
|
|
|
|
static inline bool __pure efi_soft_reserve_enabled(void)
|
|
{
|
|
return IS_ENABLED(CONFIG_EFI_SOFT_RESERVE)
|
|
&& __efi_soft_reserve_enabled();
|
|
}
|
|
|
|
static inline bool efi_rt_services_supported(unsigned int mask)
|
|
{
|
|
return (efi.runtime_supported_mask & mask) == mask;
|
|
}
|
|
#else
|
|
static inline bool efi_enabled(int feature)
|
|
{
|
|
return false;
|
|
}
|
|
static inline void
|
|
efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {}
|
|
|
|
static inline bool efi_soft_reserve_enabled(void)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline bool efi_rt_services_supported(unsigned int mask)
|
|
{
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
extern int efi_status_to_err(efi_status_t status);
|
|
|
|
/*
|
|
* 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)
|
|
/*
|
|
* Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"))
|
|
* not including trailing NUL
|
|
*/
|
|
#define EFI_VARIABLE_GUID_LEN UUID_STRING_LEN
|
|
|
|
/*
|
|
* 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;
|
|
} __packed;
|
|
|
|
struct efi_acpi_dev_path {
|
|
struct efi_generic_dev_path header;
|
|
u32 hid;
|
|
u32 uid;
|
|
} __packed;
|
|
|
|
struct efi_pci_dev_path {
|
|
struct efi_generic_dev_path header;
|
|
u8 fn;
|
|
u8 dev;
|
|
} __packed;
|
|
|
|
struct efi_vendor_dev_path {
|
|
struct efi_generic_dev_path header;
|
|
efi_guid_t vendorguid;
|
|
u8 vendordata[];
|
|
} __packed;
|
|
|
|
struct efi_dev_path {
|
|
union {
|
|
struct efi_generic_dev_path header;
|
|
struct efi_acpi_dev_path acpi;
|
|
struct efi_pci_dev_path pci;
|
|
struct efi_vendor_dev_path vendor;
|
|
};
|
|
} __packed;
|
|
|
|
struct device *efi_get_device_by_path(const struct efi_dev_path **node,
|
|
size_t *len);
|
|
|
|
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;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
efi_set_variable_t *set_variable_nonblocking;
|
|
efi_query_variable_store_t *query_variable_store;
|
|
};
|
|
|
|
struct efivars {
|
|
struct kset *kset;
|
|
struct kobject *kobject;
|
|
const struct efivar_operations *ops;
|
|
};
|
|
|
|
/*
|
|
* The maximum size of VariableName + Data = 1024
|
|
* Therefore, it's reasonable to save that much
|
|
* space in each part of the structure,
|
|
* and we use a page for reading/writing.
|
|
*/
|
|
|
|
#define EFI_VAR_NAME_LEN 1024
|
|
|
|
struct efi_variable {
|
|
efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
|
|
efi_guid_t VendorGuid;
|
|
unsigned long DataSize;
|
|
__u8 Data[1024];
|
|
efi_status_t Status;
|
|
__u32 Attributes;
|
|
} __attribute__((packed));
|
|
|
|
struct efivar_entry {
|
|
struct efi_variable var;
|
|
struct list_head list;
|
|
struct kobject kobj;
|
|
bool scanning;
|
|
bool deleting;
|
|
};
|
|
|
|
static inline void
|
|
efivar_unregister(struct efivar_entry *var)
|
|
{
|
|
kobject_put(&var->kobj);
|
|
}
|
|
|
|
int efivars_register(struct efivars *efivars,
|
|
const struct efivar_operations *ops,
|
|
struct kobject *kobject);
|
|
int efivars_unregister(struct efivars *efivars);
|
|
struct kobject *efivars_kobject(void);
|
|
|
|
int efivar_supports_writes(void);
|
|
int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
|
|
void *data, bool duplicates, struct list_head *head);
|
|
|
|
int efivar_entry_add(struct efivar_entry *entry, struct list_head *head);
|
|
int efivar_entry_remove(struct efivar_entry *entry);
|
|
|
|
int __efivar_entry_delete(struct efivar_entry *entry);
|
|
int efivar_entry_delete(struct efivar_entry *entry);
|
|
|
|
int efivar_entry_size(struct efivar_entry *entry, unsigned long *size);
|
|
int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
|
|
unsigned long *size, void *data);
|
|
int efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
|
|
unsigned long *size, void *data);
|
|
int efivar_entry_set(struct efivar_entry *entry, u32 attributes,
|
|
unsigned long size, void *data, struct list_head *head);
|
|
int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes,
|
|
unsigned long *size, void *data, bool *set);
|
|
int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes,
|
|
bool block, unsigned long size, void *data);
|
|
|
|
int efivar_entry_iter_begin(void);
|
|
void efivar_entry_iter_end(void);
|
|
|
|
int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
|
|
struct list_head *head, void *data,
|
|
struct efivar_entry **prev);
|
|
int efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
|
|
struct list_head *head, void *data);
|
|
|
|
struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid,
|
|
struct list_head *head, bool remove);
|
|
|
|
bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data,
|
|
unsigned long data_size);
|
|
bool efivar_variable_is_removable(efi_guid_t vendor, const char *name,
|
|
size_t len);
|
|
|
|
#if IS_ENABLED(CONFIG_EFI_CAPSULE_LOADER)
|
|
extern bool efi_capsule_pending(int *reset_type);
|
|
|
|
extern int efi_capsule_supported(efi_guid_t guid, u32 flags,
|
|
size_t size, int *reset);
|
|
|
|
extern int efi_capsule_update(efi_capsule_header_t *capsule,
|
|
phys_addr_t *pages);
|
|
#else
|
|
static inline bool efi_capsule_pending(int *reset_type) { return false; }
|
|
#endif
|
|
|
|
#ifdef CONFIG_EFI_RUNTIME_MAP
|
|
int efi_runtime_map_init(struct kobject *);
|
|
int efi_get_runtime_map_size(void);
|
|
int efi_get_runtime_map_desc_size(void);
|
|
int efi_runtime_map_copy(void *buf, size_t bufsz);
|
|
#else
|
|
static inline int efi_runtime_map_init(struct kobject *kobj)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int efi_get_runtime_map_size(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int efi_get_runtime_map_desc_size(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int efi_runtime_map_copy(void *buf, size_t bufsz)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_EFI
|
|
extern bool efi_runtime_disabled(void);
|
|
#else
|
|
static inline bool efi_runtime_disabled(void) { return true; }
|
|
#endif
|
|
|
|
extern void efi_call_virt_check_flags(unsigned long flags, const char *call);
|
|
extern unsigned long efi_call_virt_save_flags(void);
|
|
|
|
enum efi_secureboot_mode {
|
|
efi_secureboot_mode_unset,
|
|
efi_secureboot_mode_unknown,
|
|
efi_secureboot_mode_disabled,
|
|
efi_secureboot_mode_enabled,
|
|
};
|
|
|
|
static inline
|
|
enum efi_secureboot_mode efi_get_secureboot_mode(efi_get_variable_t *get_var)
|
|
{
|
|
u8 secboot, setupmode = 0;
|
|
efi_status_t status;
|
|
unsigned long size;
|
|
|
|
size = sizeof(secboot);
|
|
status = get_var(L"SecureBoot", &EFI_GLOBAL_VARIABLE_GUID, NULL, &size,
|
|
&secboot);
|
|
if (status == EFI_NOT_FOUND)
|
|
return efi_secureboot_mode_disabled;
|
|
if (status != EFI_SUCCESS)
|
|
return efi_secureboot_mode_unknown;
|
|
|
|
size = sizeof(setupmode);
|
|
get_var(L"SetupMode", &EFI_GLOBAL_VARIABLE_GUID, NULL, &size, &setupmode);
|
|
if (secboot == 0 || setupmode == 1)
|
|
return efi_secureboot_mode_disabled;
|
|
return efi_secureboot_mode_enabled;
|
|
}
|
|
|
|
#ifdef CONFIG_EFI_EMBEDDED_FIRMWARE
|
|
void efi_check_for_embedded_firmwares(void);
|
|
#else
|
|
static inline void efi_check_for_embedded_firmwares(void) { }
|
|
#endif
|
|
|
|
/*
|
|
* Arch code can implement the following three template macros, avoiding
|
|
* reptition for the void/non-void return cases of {__,}efi_call_virt():
|
|
*
|
|
* * arch_efi_call_virt_setup()
|
|
*
|
|
* Sets up the environment for the call (e.g. switching page tables,
|
|
* allowing kernel-mode use of floating point, if required).
|
|
*
|
|
* * arch_efi_call_virt()
|
|
*
|
|
* Performs the call. The last expression in the macro must be the call
|
|
* itself, allowing the logic to be shared by the void and non-void
|
|
* cases.
|
|
*
|
|
* * arch_efi_call_virt_teardown()
|
|
*
|
|
* Restores the usual kernel environment once the call has returned.
|
|
*/
|
|
|
|
#define efi_call_virt_pointer(p, f, args...) \
|
|
({ \
|
|
efi_status_t __s; \
|
|
unsigned long __flags; \
|
|
\
|
|
arch_efi_call_virt_setup(); \
|
|
\
|
|
__flags = efi_call_virt_save_flags(); \
|
|
__s = arch_efi_call_virt(p, f, args); \
|
|
efi_call_virt_check_flags(__flags, __stringify(f)); \
|
|
\
|
|
arch_efi_call_virt_teardown(); \
|
|
\
|
|
__s; \
|
|
})
|
|
|
|
#define __efi_call_virt_pointer(p, f, args...) \
|
|
({ \
|
|
unsigned long __flags; \
|
|
\
|
|
arch_efi_call_virt_setup(); \
|
|
\
|
|
__flags = efi_call_virt_save_flags(); \
|
|
arch_efi_call_virt(p, f, args); \
|
|
efi_call_virt_check_flags(__flags, __stringify(f)); \
|
|
\
|
|
arch_efi_call_virt_teardown(); \
|
|
})
|
|
|
|
#define EFI_RANDOM_SEED_SIZE 32U // BLAKE2S_HASH_SIZE
|
|
|
|
struct linux_efi_random_seed {
|
|
u32 size;
|
|
u8 bits[];
|
|
};
|
|
|
|
struct linux_efi_tpm_eventlog {
|
|
u32 size;
|
|
u32 final_events_preboot_size;
|
|
u8 version;
|
|
u8 log[];
|
|
};
|
|
|
|
extern int efi_tpm_eventlog_init(void);
|
|
|
|
struct efi_tcg2_final_events_table {
|
|
u64 version;
|
|
u64 nr_events;
|
|
u8 events[];
|
|
};
|
|
extern int efi_tpm_final_log_size;
|
|
|
|
extern unsigned long rci2_table_phys;
|
|
|
|
/*
|
|
* efi_runtime_service() function identifiers.
|
|
* "NONE" is used by efi_recover_from_page_fault() to check if the page
|
|
* fault happened while executing an efi runtime service.
|
|
*/
|
|
enum efi_rts_ids {
|
|
EFI_NONE,
|
|
EFI_GET_TIME,
|
|
EFI_SET_TIME,
|
|
EFI_GET_WAKEUP_TIME,
|
|
EFI_SET_WAKEUP_TIME,
|
|
EFI_GET_VARIABLE,
|
|
EFI_GET_NEXT_VARIABLE,
|
|
EFI_SET_VARIABLE,
|
|
EFI_QUERY_VARIABLE_INFO,
|
|
EFI_GET_NEXT_HIGH_MONO_COUNT,
|
|
EFI_RESET_SYSTEM,
|
|
EFI_UPDATE_CAPSULE,
|
|
EFI_QUERY_CAPSULE_CAPS,
|
|
};
|
|
|
|
/*
|
|
* efi_runtime_work: Details of EFI Runtime Service work
|
|
* @arg<1-5>: EFI Runtime Service function arguments
|
|
* @status: Status of executing EFI Runtime Service
|
|
* @efi_rts_id: EFI Runtime Service function identifier
|
|
* @efi_rts_comp: Struct used for handling completions
|
|
*/
|
|
struct efi_runtime_work {
|
|
void *arg1;
|
|
void *arg2;
|
|
void *arg3;
|
|
void *arg4;
|
|
void *arg5;
|
|
efi_status_t status;
|
|
struct work_struct work;
|
|
enum efi_rts_ids efi_rts_id;
|
|
struct completion efi_rts_comp;
|
|
};
|
|
|
|
extern struct efi_runtime_work efi_rts_work;
|
|
|
|
/* Workqueue to queue EFI Runtime Services */
|
|
extern struct workqueue_struct *efi_rts_wq;
|
|
|
|
struct linux_efi_memreserve {
|
|
int size; // allocated size of the array
|
|
atomic_t count; // number of entries used
|
|
phys_addr_t next; // pa of next struct instance
|
|
struct {
|
|
phys_addr_t base;
|
|
phys_addr_t size;
|
|
} entry[];
|
|
};
|
|
|
|
#define EFI_MEMRESERVE_COUNT(size) (((size) - sizeof(struct linux_efi_memreserve)) \
|
|
/ sizeof_field(struct linux_efi_memreserve, entry[0]))
|
|
|
|
void __init efi_arch_mem_reserve(phys_addr_t addr, u64 size);
|
|
|
|
char *efi_systab_show_arch(char *str);
|
|
|
|
/*
|
|
* The LINUX_EFI_MOK_VARIABLE_TABLE_GUID config table can be provided
|
|
* to the kernel by an EFI boot loader. The table contains a packed
|
|
* sequence of these entries, one for each named MOK variable.
|
|
* The sequence is terminated by an entry with a completely NULL
|
|
* name and 0 data size.
|
|
*/
|
|
struct efi_mokvar_table_entry {
|
|
char name[256];
|
|
u64 data_size;
|
|
u8 data[];
|
|
} __attribute((packed));
|
|
|
|
#ifdef CONFIG_LOAD_UEFI_KEYS
|
|
extern void __init efi_mokvar_table_init(void);
|
|
extern struct efi_mokvar_table_entry *efi_mokvar_entry_next(
|
|
struct efi_mokvar_table_entry **mokvar_entry);
|
|
extern struct efi_mokvar_table_entry *efi_mokvar_entry_find(const char *name);
|
|
#else
|
|
static inline void efi_mokvar_table_init(void) { }
|
|
static inline struct efi_mokvar_table_entry *efi_mokvar_entry_next(
|
|
struct efi_mokvar_table_entry **mokvar_entry)
|
|
{
|
|
return NULL;
|
|
}
|
|
static inline struct efi_mokvar_table_entry *efi_mokvar_entry_find(
|
|
const char *name)
|
|
{
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_SYSFB
|
|
extern void efifb_setup_from_dmi(struct screen_info *si, const char *opt);
|
|
#else
|
|
static inline void efifb_setup_from_dmi(struct screen_info *si, const char *opt) { }
|
|
#endif
|
|
|
|
#endif /* _LINUX_EFI_H */
|