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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/drivers/firmware/efi/libstub/zboot-header.S
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/* SPDX-License-Identifier: GPL-2.0 */

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#include <linux/pe.h>

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#ifdef CONFIG_64BIT

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	.set		.Lextra_characteristics, 0x0

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	.set		.Lpe_opt_magic, IMAGE_NT_OPTIONAL_HDR64_MAGIC

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#else

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	.set		.Lextra_characteristics, IMAGE_FILE_32BIT_MACHINE

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	.set		.Lpe_opt_magic, IMAGE_NT_OPTIONAL_HDR32_MAGIC

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#endif

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	.section	".head", "a"

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	.globl		__efistub_efi_zboot_header

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__efistub_efi_zboot_header:

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.Ldoshdr:

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	.long		IMAGE_DOS_SIGNATURE

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	.ascii		"zimg"					// image type

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	.long		__efistub__gzdata_start - .Ldoshdr	// payload offset

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	.long		__efistub__gzdata_size - ZBOOT_SIZE_LEN	// payload size

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	.long		0, 0					// reserved

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	.asciz		COMP_TYPE				// compression type

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	.org		.Ldoshdr + 0x38

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	.long		LINUX_PE_MAGIC

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	.long		.Lpehdr - .Ldoshdr			// PE header offset

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.Lpehdr:

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	.long		IMAGE_NT_SIGNATURE

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	.short		MACHINE_TYPE

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	.short		.Lsection_count

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	.long		0

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	.long		0

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	.long		0

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	.short		.Lsection_table - .Loptional_header

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	.short		IMAGE_FILE_DEBUG_STRIPPED | \

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			IMAGE_FILE_EXECUTABLE_IMAGE | \

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			IMAGE_FILE_LINE_NUMS_STRIPPED |\

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			.Lextra_characteristics

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.Loptional_header:

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	.short		.Lpe_opt_magic

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	.byte		0, 0

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	.long		_etext - .Lefi_header_end

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	.long		__data_size

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	.long		0

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	.long		__efistub_efi_zboot_entry - .Ldoshdr

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	.long		.Lefi_header_end - .Ldoshdr

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#ifdef CONFIG_64BIT

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	.quad		0

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#else

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	.long		_etext - .Ldoshdr, 0x0

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#endif

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	.long		4096

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	.long		512

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	.short		0, 0

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	.short		LINUX_EFISTUB_MAJOR_VERSION	// MajorImageVersion

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	.short		LINUX_EFISTUB_MINOR_VERSION	// MinorImageVersion

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	.short		0, 0

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	.long		0

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	.long		_end - .Ldoshdr

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	.long		.Lefi_header_end - .Ldoshdr

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	.long		0

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	.short		IMAGE_SUBSYSTEM_EFI_APPLICATION

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	.short		IMAGE_DLLCHARACTERISTICS_NX_COMPAT

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#ifdef CONFIG_64BIT

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	.quad		0, 0, 0, 0

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#else

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	.long		0, 0, 0, 0

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#endif

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	.long		0

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	.long		(.Lsection_table - .) / 8

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	.quad		0				// ExportTable

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	.quad		0				// ImportTable

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	.quad		0				// ResourceTable

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	.quad		0				// ExceptionTable

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	.quad		0				// CertificationTable

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	.quad		0				// BaseRelocationTable

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#if defined(PE_DLL_CHAR_EX) || defined(CONFIG_DEBUG_EFI)

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	.long		.Lefi_debug_table - .Ldoshdr	// DebugTable

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	.long		.Lefi_debug_table_size

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	.section	".rodata", "a"

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	.p2align	2

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.Lefi_debug_table:

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	// EFI_IMAGE_DEBUG_DIRECTORY_ENTRY[]

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#ifdef PE_DLL_CHAR_EX

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	.long		0					// Characteristics

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	.long		0					// TimeDateStamp

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	.short		0					// MajorVersion

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	.short		0					// MinorVersion

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	.long		IMAGE_DEBUG_TYPE_EX_DLLCHARACTERISTICS	// Type

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	.long		4					// SizeOfData

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	.long		0					// RVA

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	.long		.Lefi_dll_characteristics_ex - .Ldoshdr	// FileOffset

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#endif

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#ifdef CONFIG_DEBUG_EFI

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	.long		0					// Characteristics

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	.long		0					// TimeDateStamp

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	.short		0					// MajorVersion

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	.short		0					// MinorVersion

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	.long		IMAGE_DEBUG_TYPE_CODEVIEW		// Type

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	.long		.Lefi_debug_entry_size			// SizeOfData

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	.long		0					// RVA

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	.long		.Lefi_debug_entry - .Ldoshdr		// FileOffset

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#endif

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	.set		.Lefi_debug_table_size, . - .Lefi_debug_table

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	.previous

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#endif

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.Lsection_table:

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

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	.long		_etext - .Lefi_header_end

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	.long		.Lefi_header_end - .Ldoshdr

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	.long		_etext - .Lefi_header_end

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	.long		.Lefi_header_end - .Ldoshdr

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	.long		0, 0

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	.short		0, 0

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	.long		IMAGE_SCN_CNT_CODE | \

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			IMAGE_SCN_MEM_READ | \

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			IMAGE_SCN_MEM_EXECUTE

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#ifdef CONFIG_EFI_SBAT

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	.ascii		".sbat\0\0\0"

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	.long		__sbat_size

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	.long		_sbat - .Ldoshdr

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	.long		__sbat_size

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	.long		_sbat - .Ldoshdr

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	.long		0, 0

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	.short		0, 0

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	.long		IMAGE_SCN_CNT_INITIALIZED_DATA | \

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			IMAGE_SCN_MEM_READ | \

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			IMAGE_SCN_MEM_DISCARDABLE

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	.pushsection ".sbat", "a", @progbits

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	.incbin CONFIG_EFI_SBAT_FILE

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	.popsection

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#endif

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

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	.long		__data_size

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	.long		_data - .Ldoshdr

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	.long		__data_rawsize

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	.long		_data - .Ldoshdr

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	.long		0, 0

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	.short		0, 0

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	.long		IMAGE_SCN_CNT_INITIALIZED_DATA | \

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			IMAGE_SCN_MEM_READ | \

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			IMAGE_SCN_MEM_WRITE

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	.set		.Lsection_count, (. - .Lsection_table) / 40

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#ifdef PE_DLL_CHAR_EX

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.Lefi_dll_characteristics_ex:

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	.long		PE_DLL_CHAR_EX

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#endif

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#ifdef CONFIG_DEBUG_EFI

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.Lefi_debug_entry:

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	// EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY

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	.ascii		"NB10"				// Signature

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	.long		0				// Unknown

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	.long		0				// Unknown2

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	.long		0				// Unknown3

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	.asciz		ZBOOT_EFI_PATH

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	.set		.Lefi_debug_entry_size, . - .Lefi_debug_entry

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#endif

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	.p2align	12

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.Lefi_header_end:

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