1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef BOOT_COMPRESSED_EFI_H 3#define BOOT_COMPRESSED_EFI_H 4 5#if defined(_LINUX_EFI_H) || defined(_ASM_X86_EFI_H) 6#error Please do not include kernel proper namespace headers 7#endif 8 9typedef guid_t efi_guid_t __aligned(__alignof__(u32)); 10 11#define EFI_GUID(a, b, c, d...) (efi_guid_t){ { \ 12 (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ 13 (b) & 0xff, ((b) >> 8) & 0xff, \ 14 (c) & 0xff, ((c) >> 8) & 0xff, d } } 15 16#define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 17#define ACPI_20_TABLE_GUID EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81) 18#define EFI_CC_BLOB_GUID EFI_GUID(0x067b1f5f, 0xcf26, 0x44c5, 0x85, 0x54, 0x93, 0xd7, 0x77, 0x91, 0x2d, 0x42) 19#define LINUX_EFI_UNACCEPTED_MEM_TABLE_GUID EFI_GUID(0xd5d1de3c, 0x105c, 0x44f9, 0x9e, 0xa9, 0xbc, 0xef, 0x98, 0x12, 0x00, 0x31) 20 21#define EFI32_LOADER_SIGNATURE "EL32" 22#define EFI64_LOADER_SIGNATURE "EL64" 23 24/* 25 * Generic EFI table header 26 */ 27typedef struct { 28 u64 signature; 29 u32 revision; 30 u32 headersize; 31 u32 crc32; 32 u32 reserved; 33} efi_table_hdr_t; 34 35#define EFI_CONVENTIONAL_MEMORY 7 36#define EFI_UNACCEPTED_MEMORY 15 37 38#define EFI_MEMORY_MORE_RELIABLE \ 39 ((u64)0x0000000000010000ULL) /* higher reliability */ 40#define EFI_MEMORY_SP ((u64)0x0000000000040000ULL) /* soft reserved */ 41 42#define EFI_PAGE_SHIFT 12 43 44typedef struct { 45 u32 type; 46 u32 pad; 47 u64 phys_addr; 48 u64 virt_addr; 49 u64 num_pages; 50 u64 attribute; 51} efi_memory_desc_t; 52 53#define efi_early_memdesc_ptr(map, desc_size, n) \ 54 (efi_memory_desc_t *)((void *)(map) + ((n) * (desc_size))) 55 56typedef struct { 57 efi_guid_t guid; 58 u64 table; 59} efi_config_table_64_t; 60 61typedef struct { 62 efi_guid_t guid; 63 u32 table; 64} efi_config_table_32_t; 65 66typedef struct { 67 efi_table_hdr_t hdr; 68 u64 fw_vendor; /* physical addr of CHAR16 vendor string */ 69 u32 fw_revision; 70 u32 __pad1; 71 u64 con_in_handle; 72 u64 con_in; 73 u64 con_out_handle; 74 u64 con_out; 75 u64 stderr_handle; 76 u64 stderr; 77 u64 runtime; 78 u64 boottime; 79 u32 nr_tables; 80 u32 __pad2; 81 u64 tables; 82} efi_system_table_64_t; 83 84typedef struct { 85 efi_table_hdr_t hdr; 86 u32 fw_vendor; /* physical addr of CHAR16 vendor string */ 87 u32 fw_revision; 88 u32 con_in_handle; 89 u32 con_in; 90 u32 con_out_handle; 91 u32 con_out; 92 u32 stderr_handle; 93 u32 stderr; 94 u32 runtime; 95 u32 boottime; 96 u32 nr_tables; 97 u32 tables; 98} efi_system_table_32_t; 99 100struct efi_unaccepted_memory { 101 u32 version; 102 u32 unit_size; 103 u64 phys_base; 104 u64 size; 105 unsigned long bitmap[]; 106}; 107 108static inline int efi_guidcmp (efi_guid_t left, efi_guid_t right) 109{ 110 return memcmp(&left, &right, sizeof (efi_guid_t)); 111} 112 113#ifdef CONFIG_EFI 114bool __pure __efi_soft_reserve_enabled(void); 115 116static inline bool __pure efi_soft_reserve_enabled(void) 117{ 118 return IS_ENABLED(CONFIG_EFI_SOFT_RESERVE) 119 && __efi_soft_reserve_enabled(); 120} 121#else 122static inline bool efi_soft_reserve_enabled(void) 123{ 124 return false; 125} 126#endif /* CONFIG_EFI */ 127#endif /* BOOT_COMPRESSED_EFI_H */ 128