Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/riscv/kernel/efi-header.S
26424 views
1
/* SPDX-License-Identifier: GPL-2.0-only */

2
/*

3
 * Copyright (C) 2020 Western Digital Corporation or its affiliates.

4
 * Adapted from arch/arm64/kernel/efi-header.S

5
 */

6


7
#include <linux/pe.h>

8
#include <linux/sizes.h>

9
#include <asm/set_memory.h>

10


11
	.macro	__EFI_PE_HEADER

12
	.long	IMAGE_NT_SIGNATURE

13
coff_header:

14
#ifdef CONFIG_64BIT

15
	.short	IMAGE_FILE_MACHINE_RISCV64		// Machine

16
#else

17
	.short	IMAGE_FILE_MACHINE_RISCV32		// Machine

18
#endif

19
	.short	section_count				// NumberOfSections

20
	.long	0 					// TimeDateStamp

21
	.long	0					// PointerToSymbolTable

22
	.long	0					// NumberOfSymbols

23
	.short	section_table - optional_header		// SizeOfOptionalHeader

24
	.short	IMAGE_FILE_DEBUG_STRIPPED | \

25
		IMAGE_FILE_EXECUTABLE_IMAGE | \

26
		IMAGE_FILE_LINE_NUMS_STRIPPED		// Characteristics

27


28
optional_header:

29
#ifdef CONFIG_64BIT

30
	.short	IMAGE_NT_OPTIONAL_HDR64_MAGIC		// PE32+ format

31
#else

32
	.short	IMAGE_NT_OPTIONAL_HDR32_MAGIC		// PE32 format

33
#endif

34
	.byte	0x02					// MajorLinkerVersion

35
	.byte	0x14					// MinorLinkerVersion

36
	.long	__pecoff_text_end - efi_header_end	// SizeOfCode

37
#ifdef __clang__

38
	.long   __pecoff_data_virt_size			// SizeOfInitializedData

39
#else

40
	.long	__pecoff_data_virt_end - __pecoff_text_end	// SizeOfInitializedData

41
#endif

42
	.long	0					// SizeOfUninitializedData

43
	.long	__efistub_efi_pe_entry - _start		// AddressOfEntryPoint

44
	.long	efi_header_end - _start			// BaseOfCode

45
#ifdef CONFIG_32BIT

46
	.long  __pecoff_text_end - _start		// BaseOfData

47
#endif

48


49
extra_header_fields:

50
	.quad	0					// ImageBase

51
	.long	PECOFF_SECTION_ALIGNMENT		// SectionAlignment

52
	.long	PECOFF_FILE_ALIGNMENT			// FileAlignment

53
	.short	0					// MajorOperatingSystemVersion

54
	.short	0					// MinorOperatingSystemVersion

55
	.short	LINUX_EFISTUB_MAJOR_VERSION		// MajorImageVersion

56
	.short	LINUX_EFISTUB_MINOR_VERSION		// MinorImageVersion

57
	.short	0					// MajorSubsystemVersion

58
	.short	0					// MinorSubsystemVersion

59
	.long	0					// Win32VersionValue

60


61
	.long	_end - _start				// SizeOfImage

62


63
	// Everything before the kernel image is considered part of the header

64
	.long	efi_header_end - _start			// SizeOfHeaders

65
	.long	0					// CheckSum

66
	.short	IMAGE_SUBSYSTEM_EFI_APPLICATION		// Subsystem

67
	.short	IMAGE_DLLCHARACTERISTICS_NX_COMPAT	// DllCharacteristics

68
	.quad	0					// SizeOfStackReserve

69
	.quad	0					// SizeOfStackCommit

70
	.quad	0					// SizeOfHeapReserve

71
	.quad	0					// SizeOfHeapCommit

72
	.long	0					// LoaderFlags

73
	.long	(section_table - .) / 8			// NumberOfRvaAndSizes

74


75
	.quad	0					// ExportTable

76
	.quad	0					// ImportTable

77
	.quad	0					// ResourceTable

78
	.quad	0					// ExceptionTable

79
	.quad	0					// CertificationTable

80
	.quad	0					// BaseRelocationTable

81


82
	// Section table

83
section_table:

84
	.ascii	".text\0\0\0"

85
	.long	__pecoff_text_end - efi_header_end	// VirtualSize

86
	.long	efi_header_end - _start			// VirtualAddress

87
	.long	__pecoff_text_end - efi_header_end	// SizeOfRawData

88
	.long	efi_header_end - _start			// PointerToRawData

89


90
	.long	0					// PointerToRelocations

91
	.long	0					// PointerToLineNumbers

92
	.short	0					// NumberOfRelocations

93
	.short	0					// NumberOfLineNumbers

94
	.long	IMAGE_SCN_CNT_CODE | \

95
		IMAGE_SCN_MEM_READ | \

96
		IMAGE_SCN_MEM_EXECUTE			// Characteristics

97


98
	.ascii	".data\0\0\0"

99
#ifdef __clang__

100
	.long   __pecoff_data_virt_size			// VirtualSize

101
#else

102
	.long	__pecoff_data_virt_end - __pecoff_text_end	// VirtualSize

103
#endif

104
	.long	__pecoff_text_end - _start		// VirtualAddress

105
#ifdef __clang__

106
	.long   __pecoff_data_raw_size			// SizeOfRawData

107
#else

108
	.long	__pecoff_data_raw_end - __pecoff_text_end	// SizeOfRawData

109
#endif

110
	.long	__pecoff_text_end - _start		// PointerToRawData

111


112
	.long	0					// PointerToRelocations

113
	.long	0					// PointerToLineNumbers

114
	.short	0					// NumberOfRelocations

115
	.short	0					// NumberOfLineNumbers

116
	.long	IMAGE_SCN_CNT_INITIALIZED_DATA | \

117
		IMAGE_SCN_MEM_READ | \

118
		IMAGE_SCN_MEM_WRITE			// Characteristics

119


120
	.set	section_count, (. - section_table) / 40

121


122
	.balign	0x1000

123
efi_header_end:

124
	.endm

125


126