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 20 #define EFI32_LOADER_SIGNATURE "EL32" 21 #define EFI64_LOADER_SIGNATURE "EL64" 22 23 /* 24 * Generic EFI table header 25 */ 26 typedef struct { 27 u64 signature; 28 u32 revision; 29 u32 headersize; 30 u32 crc32; 31 u32 reserved; 32 } efi_table_hdr_t; 33 34 #define EFI_CONVENTIONAL_MEMORY 7 35 36 #define EFI_MEMORY_MORE_RELIABLE \ 37 ((u64)0x0000000000010000ULL) /* higher reliability */ 38 #define EFI_MEMORY_SP ((u64)0x0000000000040000ULL) /* soft reserved */ 39 40 #define EFI_PAGE_SHIFT 12 41 42 typedef struct { 43 u32 type; 44 u32 pad; 45 u64 phys_addr; 46 u64 virt_addr; 47 u64 num_pages; 48 u64 attribute; 49 } efi_memory_desc_t; 50 51 #define efi_early_memdesc_ptr(map, desc_size, n) \ 52 (efi_memory_desc_t *)((void *)(map) + ((n) * (desc_size))) 53 54 typedef struct { 55 efi_guid_t guid; 56 u64 table; 57 } efi_config_table_64_t; 58 59 typedef struct { 60 efi_guid_t guid; 61 u32 table; 62 } efi_config_table_32_t; 63 64 typedef struct { 65 efi_table_hdr_t hdr; 66 u64 fw_vendor; /* physical addr of CHAR16 vendor string */ 67 u32 fw_revision; 68 u32 __pad1; 69 u64 con_in_handle; 70 u64 con_in; 71 u64 con_out_handle; 72 u64 con_out; 73 u64 stderr_handle; 74 u64 stderr; 75 u64 runtime; 76 u64 boottime; 77 u32 nr_tables; 78 u32 __pad2; 79 u64 tables; 80 } efi_system_table_64_t; 81 82 typedef struct { 83 efi_table_hdr_t hdr; 84 u32 fw_vendor; /* physical addr of CHAR16 vendor string */ 85 u32 fw_revision; 86 u32 con_in_handle; 87 u32 con_in; 88 u32 con_out_handle; 89 u32 con_out; 90 u32 stderr_handle; 91 u32 stderr; 92 u32 runtime; 93 u32 boottime; 94 u32 nr_tables; 95 u32 tables; 96 } efi_system_table_32_t; 97 98 /* kexec external ABI */ 99 struct efi_setup_data { 100 u64 fw_vendor; 101 u64 __unused; 102 u64 tables; 103 u64 smbios; 104 u64 reserved[8]; 105 }; 106 107 static inline int efi_guidcmp (efi_guid_t left, efi_guid_t right) 108 { 109 return memcmp(&left, &right, sizeof (efi_guid_t)); 110 } 111 112 #ifdef CONFIG_EFI 113 bool __pure __efi_soft_reserve_enabled(void); 114 115 static inline bool __pure efi_soft_reserve_enabled(void) 116 { 117 return IS_ENABLED(CONFIG_EFI_SOFT_RESERVE) 118 && __efi_soft_reserve_enabled(); 119 } 120 #else 121 static inline bool efi_soft_reserve_enabled(void) 122 { 123 return false; 124 } 125 #endif /* CONFIG_EFI */ 126 #endif /* BOOT_COMPRESSED_EFI_H */ 127