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 9 typedef 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 */ 27 typedef 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 44 typedef 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 56 typedef struct { 57 efi_guid_t guid; 58 u64 table; 59 } efi_config_table_64_t; 60 61 typedef struct { 62 efi_guid_t guid; 63 u32 table; 64 } efi_config_table_32_t; 65 66 typedef 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 84 typedef 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; 99 100 /* kexec external ABI */ 101 struct efi_setup_data { 102 u64 fw_vendor; 103 u64 __unused; 104 u64 tables; 105 u64 smbios; 106 u64 reserved[8]; 107 }; 108 109 struct efi_unaccepted_memory { 110 u32 version; 111 u32 unit_size; 112 u64 phys_base; 113 u64 size; 114 unsigned long bitmap[]; 115 }; 116 117 static inline int efi_guidcmp (efi_guid_t left, efi_guid_t right) 118 { 119 return memcmp(&left, &right, sizeof (efi_guid_t)); 120 } 121 122 #ifdef CONFIG_EFI 123 bool __pure __efi_soft_reserve_enabled(void); 124 125 static inline bool __pure efi_soft_reserve_enabled(void) 126 { 127 return IS_ENABLED(CONFIG_EFI_SOFT_RESERVE) 128 && __efi_soft_reserve_enabled(); 129 } 130 #else 131 static inline bool efi_soft_reserve_enabled(void) 132 { 133 return false; 134 } 135 #endif /* CONFIG_EFI */ 136 #endif /* BOOT_COMPRESSED_EFI_H */ 137