| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _LINUX_EFI_H |
| #define _LINUX_EFI_H |
| |
| /* |
| * Extensible Firmware Interface |
| * Based on 'Extensible Firmware Interface Specification' version 0.9, April 30, 1999 |
| * |
| * Copyright (C) 1999 VA Linux Systems |
| * Copyright (C) 1999 Walt Drummond <drummond@valinux.com> |
| * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co. |
| * David Mosberger-Tang <davidm@hpl.hp.com> |
| * Stephane Eranian <eranian@hpl.hp.com> |
| */ |
| #include <linux/init.h> |
| #include <linux/string.h> |
| #include <linux/time.h> |
| #include <linux/types.h> |
| #include <linux/proc_fs.h> |
| #include <linux/rtc.h> |
| #include <linux/ioport.h> |
| #include <linux/pfn.h> |
| #include <linux/pstore.h> |
| #include <linux/range.h> |
| #include <linux/reboot.h> |
| #include <linux/uuid.h> |
| #include <linux/screen_info.h> |
| |
| #include <asm/page.h> |
| |
| #define EFI_SUCCESS 0 |
| #define EFI_LOAD_ERROR ( 1 | (1UL << (BITS_PER_LONG-1))) |
| #define EFI_INVALID_PARAMETER ( 2 | (1UL << (BITS_PER_LONG-1))) |
| #define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1))) |
| #define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1))) |
| #define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1))) |
| #define EFI_NOT_READY ( 6 | (1UL << (BITS_PER_LONG-1))) |
| #define EFI_DEVICE_ERROR ( 7 | (1UL << (BITS_PER_LONG-1))) |
| #define EFI_WRITE_PROTECTED ( 8 | (1UL << (BITS_PER_LONG-1))) |
| #define EFI_OUT_OF_RESOURCES ( 9 | (1UL << (BITS_PER_LONG-1))) |
| #define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1))) |
| #define EFI_TIMEOUT (18 | (1UL << (BITS_PER_LONG-1))) |
| #define EFI_ABORTED (21 | (1UL << (BITS_PER_LONG-1))) |
| #define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1))) |
| |
| typedef unsigned long efi_status_t; |
| typedef u8 efi_bool_t; |
| typedef u16 efi_char16_t; /* UNICODE character */ |
| typedef u64 efi_physical_addr_t; |
| typedef void *efi_handle_t; |
| |
| #if defined(CONFIG_X86_64) |
| #define __efiapi __attribute__((ms_abi)) |
| #elif defined(CONFIG_X86_32) |
| #define __efiapi __attribute__((regparm(0))) |
| #else |
| #define __efiapi |
| #endif |
| |
| /* |
| * The UEFI spec and EDK2 reference implementation both define EFI_GUID as |
| * struct { u32 a; u16; b; u16 c; u8 d[8]; }; and so the implied alignment |
| * is 32 bits not 8 bits like our guid_t. In some cases (i.e., on 32-bit ARM), |
| * this means that firmware services invoked by the kernel may assume that |
| * efi_guid_t* arguments are 32-bit aligned, and use memory accessors that |
| * do not tolerate misalignment. So let's set the minimum alignment to 32 bits. |
| * |
| * Note that the UEFI spec as well as some comments in the EDK2 code base |
| * suggest that EFI_GUID should be 64-bit aligned, but this appears to be |
| * a mistake, given that no code seems to exist that actually enforces that |
| * or relies on it. |
| */ |
| typedef guid_t efi_guid_t __aligned(__alignof__(u32)); |
| |
| #define EFI_GUID(a, b, c, d...) (efi_guid_t){ { \ |
| (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ |
| (b) & 0xff, ((b) >> 8) & 0xff, \ |
| (c) & 0xff, ((c) >> 8) & 0xff, d } } |
| |
| /* |
| * Generic EFI table header |
| */ |
| typedef struct { |
| u64 signature; |
| u32 revision; |
| u32 headersize; |
| u32 crc32; |
| u32 reserved; |
| } efi_table_hdr_t; |
| |
| /* |
| * Memory map descriptor: |
| */ |
| |
| /* Memory types: */ |
| #define EFI_RESERVED_TYPE 0 |
| #define EFI_LOADER_CODE 1 |
| #define EFI_LOADER_DATA 2 |
| #define EFI_BOOT_SERVICES_CODE 3 |
| #define EFI_BOOT_SERVICES_DATA 4 |
| #define EFI_RUNTIME_SERVICES_CODE 5 |
| #define EFI_RUNTIME_SERVICES_DATA 6 |
| #define EFI_CONVENTIONAL_MEMORY 7 |
| #define EFI_UNUSABLE_MEMORY 8 |
| #define EFI_ACPI_RECLAIM_MEMORY 9 |
| #define EFI_ACPI_MEMORY_NVS 10 |
| #define EFI_MEMORY_MAPPED_IO 11 |
| #define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12 |
| #define EFI_PAL_CODE 13 |
| #define EFI_PERSISTENT_MEMORY 14 |
| #define EFI_MAX_MEMORY_TYPE 15 |
| |
| /* 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_SP ((u64)0x0000000000040000ULL) /* soft reserved */ |
| #define EFI_MEMORY_CPU_CRYPTO ((u64)0x0000000000080000ULL) /* supports encryption */ |
| #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */ |
| #define EFI_MEMORY_DESCRIPTOR_VERSION 1 |
| |
| #define EFI_PAGE_SHIFT 12 |
| #define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT) |
| #define EFI_PAGES_MAX (U64_MAX >> EFI_PAGE_SHIFT) |
| |
| typedef struct { |
| u32 type; |
| u32 pad; |
| u64 phys_addr; |
| u64 virt_addr; |
| u64 num_pages; |
| u64 attribute; |
| } efi_memory_desc_t; |
| |
| typedef struct { |
| efi_guid_t guid; |
| u32 headersize; |
| u32 flags; |
| u32 imagesize; |
| } efi_capsule_header_t; |
| |
| /* |
| * EFI capsule flags |
| */ |
| #define EFI_CAPSULE_PERSIST_ACROSS_RESET 0x00010000 |
| #define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000 |
| #define EFI_CAPSULE_INITIATE_RESET 0x00040000 |
| |
| struct capsule_info { |
| efi_capsule_header_t header; |
| efi_capsule_header_t *capsule; |
| int reset_type; |
| long index; |
| size_t count; |
| size_t total_size; |
| struct page **pages; |
| phys_addr_t *phys; |
| size_t page_bytes_remain; |
| }; |
| |
| int __efi_capsule_setup_info(struct capsule_info *cap_info); |
| |
| /* |
| * Types and defines for Time Services |
| */ |
| #define EFI_TIME_ADJUST_DAYLIGHT 0x1 |
| #define EFI_TIME_IN_DAYLIGHT 0x2 |
| #define EFI_UNSPECIFIED_TIMEZONE 0x07ff |
| |
| typedef struct { |
| u16 year; |
| u8 month; |
| u8 day; |
| u8 hour; |
| u8 minute; |
| u8 second; |
| u8 pad1; |
| u32 nanosecond; |
| s16 timezone; |
| u8 daylight; |
| u8 pad2; |
| } efi_time_t; |
| |
| typedef struct { |
| u32 resolution; |
| u32 accuracy; |
| u8 sets_to_zero; |
| } efi_time_cap_t; |
| |
| typedef union efi_boot_services efi_boot_services_t; |
| |
| /* |
| * Types and defines for EFI ResetSystem |
| */ |
| #define EFI_RESET_COLD 0 |
| #define EFI_RESET_WARM 1 |
| #define EFI_RESET_SHUTDOWN 2 |
| |
| /* |
| * EFI Runtime Services table |
| */ |
| #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL) |
| #define EFI_RUNTIME_SERVICES_REVISION 0x00010000 |
| |
| typedef struct { |
| efi_table_hdr_t hdr; |
| u32 get_time; |
| u32 set_time; |
| u32 get_wakeup_time; |
| u32 set_wakeup_time; |
| u32 set_virtual_address_map; |
| u32 convert_pointer; |
| u32 get_variable; |
| u32 get_next_variable; |
| u32 set_variable; |
| u32 get_next_high_mono_count; |
| u32 reset_system; |
| u32 update_capsule; |
| u32 query_capsule_caps; |
| u32 query_variable_info; |
| } efi_runtime_services_32_t; |
| |
| typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc); |
| typedef efi_status_t efi_set_time_t (efi_time_t *tm); |
| typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending, |
| efi_time_t *tm); |
| typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm); |
| typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr, |
| unsigned long *data_size, void *data); |
| typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name, |
| efi_guid_t *vendor); |
| typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor, |
| u32 attr, unsigned long data_size, |
| void *data); |
| typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count); |
| typedef void efi_reset_system_t (int reset_type, efi_status_t status, |
| unsigned long data_size, efi_char16_t *data); |
| typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size, |
| unsigned long descriptor_size, |
| u32 descriptor_version, |
| efi_memory_desc_t *virtual_map); |
| typedef efi_status_t efi_query_variable_info_t(u32 attr, |
| u64 *storage_space, |
| u64 *remaining_space, |
| u64 *max_variable_size); |
| typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules, |
| unsigned long count, |
| unsigned long sg_list); |
| typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules, |
| unsigned long count, |
| u64 *max_size, |
| int *reset_type); |
| typedef efi_status_t efi_query_variable_store_t(u32 attributes, |
| unsigned long size, |
| bool nonblocking); |
| |
| typedef union { |
| struct { |
| efi_table_hdr_t hdr; |
| efi_get_time_t __efiapi *get_time; |
| efi_set_time_t __efiapi *set_time; |
| efi_get_wakeup_time_t __efiapi *get_wakeup_time; |
| efi_set_wakeup_time_t __efiapi *set_wakeup_time; |
| efi_set_virtual_address_map_t __efiapi *set_virtual_address_map; |
| void *convert_pointer; |
| efi_get_variable_t __efiapi *get_variable; |
| efi_get_next_variable_t __efiapi *get_next_variable; |
| efi_set_variable_t __efiapi *set_variable; |
| efi_get_next_high_mono_count_t __efiapi *get_next_high_mono_count; |
| efi_reset_system_t __efiapi *reset_system; |
| efi_update_capsule_t __efiapi *update_capsule; |
| efi_query_capsule_caps_t __efiapi *query_capsule_caps; |
| efi_query_variable_info_t __efiapi *query_variable_info; |
| }; |
| efi_runtime_services_32_t mixed_mode; |
| } efi_runtime_services_t; |
| |
| void efi_native_runtime_setup(void); |
| |
| /* |
| * EFI Configuration Table and GUID definitions |
| * |
| * These are all defined in a single line to make them easier to |
| * grep for and to see them at a glance - while still having a |
| * similar structure to the definitions in the spec. |
| * |
| * Here's how they are structured: |
| * |
| * GUID: 12345678-1234-1234-1234-123456789012 |
| * Spec: |
| * #define EFI_SOME_PROTOCOL_GUID \ |
| * {0x12345678,0x1234,0x1234,\ |
| * {0x12,0x34,0x12,0x34,0x56,0x78,0x90,0x12}} |
| * Here: |
| * #define SOME_PROTOCOL_GUID EFI_GUID(0x12345678, 0x1234, 0x1234, 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12) |
| * ^ tabs ^extra space |
| * |
| * Note that the 'extra space' separates the values at the same place |
| * where the UEFI SPEC breaks the line. |
| */ |
| #define NULL_GUID EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00) |
| #define MPS_TABLE_GUID EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) |
| #define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) |
| #define ACPI_20_TABLE_GUID EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81) |
| #define SMBIOS_TABLE_GUID EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) |
| #define SMBIOS3_TABLE_GUID EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94) |
| #define SAL_SYSTEM_TABLE_GUID EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) |
| #define HCDP_TABLE_GUID EFI_GUID(0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98) |
| #define UGA_IO_PROTOCOL_GUID EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2) |
| #define EFI_GLOBAL_VARIABLE_GUID EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c) |
| #define UV_SYSTEM_TABLE_GUID EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93) |
| #define LINUX_EFI_CRASH_GUID EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0) |
| #define LOADED_IMAGE_PROTOCOL_GUID EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) |
| #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a) |
| #define EFI_UGA_PROTOCOL_GUID EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39) |
| #define EFI_PCI_IO_PROTOCOL_GUID EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a) |
| #define EFI_FILE_INFO_ID EFI_GUID(0x09576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) |
| #define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80) |
| #define EFI_FILE_SYSTEM_GUID EFI_GUID(0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) |
| #define DEVICE_TREE_GUID EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0) |
| #define EFI_PROPERTIES_TABLE_GUID EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5) |
| #define EFI_RNG_PROTOCOL_GUID EFI_GUID(0x3152bca5, 0xeade, 0x433d, 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44) |
| #define EFI_RNG_ALGORITHM_RAW EFI_GUID(0xe43176d7, 0xb6e8, 0x4827, 0xb7, 0x84, 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61) |
| #define EFI_MEMORY_ATTRIBUTES_TABLE_GUID EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20) |
| #define EFI_CONSOLE_OUT_DEVICE_GUID EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) |
| #define APPLE_PROPERTIES_PROTOCOL_GUID EFI_GUID(0x91bd12fe, 0xf6c3, 0x44fb, 0xa5, 0xb7, 0x51, 0x22, 0xab, 0x30, 0x3a, 0xe0) |
| #define EFI_TCG2_PROTOCOL_GUID EFI_GUID(0x607f766c, 0x7455, 0x42be, 0x93, 0x0b, 0xe4, 0xd7, 0x6d, 0xb2, 0x72, 0x0f) |
| #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) |
| #define AMD_SEV_MEM_ENCRYPT_GUID EFI_GUID(0x0cf29b71, 0x9e51, 0x433a, 0xa3, 0xb7, 0x81, 0xf3, 0xab, 0x16, 0xb8, 0x75) |
| |
| 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_alloc(unsigned int num_entries, |
| struct efi_memory_map_data *data); |
| extern void __efi_memmap_free(u64 phys, unsigned long size, |
| unsigned long flags); |
| 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); |
| extern int __init efi_memmap_install(struct efi_memory_map_data *data); |
| extern int __init efi_memmap_split_count(efi_memory_desc_t *md, |
| struct range *range); |
| extern void __init efi_memmap_insert(struct efi_memory_map *old_memmap, |
| void *buf, struct efi_mem_range *mem); |
| |
| #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 |
| |
| efi_status_t efi_random_get_seed(void); |
| |
| /* |
| * 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 64U |
| |
| 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 |
| |
| #endif /* _LINUX_EFI_H */ |