Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/x86/boot/compressed/efi.h
26481 views
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
struct efi_unaccepted_memory {

101
	u32 version;

102
	u32 unit_size;

103
	u64 phys_base;

104
	u64 size;

105
	unsigned long bitmap[];

106
};

107


108
static 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

114
bool __pure __efi_soft_reserve_enabled(void);

115


116
static 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

122
static inline bool efi_soft_reserve_enabled(void)

123
{

124
	return false;

125
}

126
#endif /* CONFIG_EFI */

127
#endif /* BOOT_COMPRESSED_EFI_H */

128


129