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
100/* kexec external ABI */
101struct efi_setup_data {
102	u64 fw_vendor;
103	u64 __unused;
104	u64 tables;
105	u64 smbios;
106	u64 reserved[8];
107};
108
109struct efi_unaccepted_memory {
110	u32 version;
111	u32 unit_size;
112	u64 phys_base;
113	u64 size;
114	unsigned long bitmap[];
115};
116
117static 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
123bool __pure __efi_soft_reserve_enabled(void);
124
125static 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
131static inline bool efi_soft_reserve_enabled(void)
132{
133	return false;
134}
135#endif /* CONFIG_EFI */
136#endif /* BOOT_COMPRESSED_EFI_H */
137