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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2013 - 2017 Linaro, Ltd.
* Copyright (C) 2013, 2014 Red Hat, Inc.
*/
#include <linux/pe.h>
#include <linux/sizes.h>
.macro efi_signature_nop
#ifdef CONFIG_EFI
.L_head:
/*
* This ccmp instruction has no meaningful effect except that
* its opcode forms the magic "MZ" signature required by UEFI.
*/
ccmp x18, #0, #0xd, pl
#else
/*
* Bootloaders may inspect the opcode at the start of the kernel
* image to decide if the kernel is capable of booting via UEFI.
* So put an ordinary NOP here, not the "MZ.." pseudo-nop above.
*/
nop
#endif
.endm
.macro __EFI_PE_HEADER
#ifdef CONFIG_EFI
.set .Lpe_header_offset, . - .L_head
.long PE_MAGIC
.short IMAGE_FILE_MACHINE_ARM64 // Machine
.short .Lsection_count // NumberOfSections
.long 0 // TimeDateStamp
.long 0 // PointerToSymbolTable
.long 0 // NumberOfSymbols
.short .Lsection_table - .Loptional_header // SizeOfOptionalHeader
.short IMAGE_FILE_DEBUG_STRIPPED | \
IMAGE_FILE_EXECUTABLE_IMAGE | \
IMAGE_FILE_LINE_NUMS_STRIPPED // Characteristics
.Loptional_header:
.short PE_OPT_MAGIC_PE32PLUS // PE32+ format
.byte 0x02 // MajorLinkerVersion
.byte 0x14 // MinorLinkerVersion
.long __initdata_begin - .Lefi_header_end // SizeOfCode
.long __pecoff_data_size // SizeOfInitializedData
.long 0 // SizeOfUninitializedData
.long __efistub_efi_pe_entry - .L_head // AddressOfEntryPoint
.long .Lefi_header_end - .L_head // BaseOfCode
.quad 0 // ImageBase
.long SEGMENT_ALIGN // SectionAlignment
.long PECOFF_FILE_ALIGNMENT // FileAlignment
.short 0 // MajorOperatingSystemVersion
.short 0 // MinorOperatingSystemVersion
.short LINUX_EFISTUB_MAJOR_VERSION // MajorImageVersion
.short LINUX_EFISTUB_MINOR_VERSION // MinorImageVersion
.short 0 // MajorSubsystemVersion
.short 0 // MinorSubsystemVersion
.long 0 // Win32VersionValue
.long _end - .L_head // SizeOfImage
// Everything before the kernel image is considered part of the header
.long .Lefi_header_end - .L_head // SizeOfHeaders
.long 0 // CheckSum
.short IMAGE_SUBSYSTEM_EFI_APPLICATION // Subsystem
.short IMAGE_DLL_CHARACTERISTICS_NX_COMPAT // DllCharacteristics
.quad 0 // SizeOfStackReserve
.quad 0 // SizeOfStackCommit
.quad 0 // SizeOfHeapReserve
.quad 0 // SizeOfHeapCommit
.long 0 // LoaderFlags
.long (.Lsection_table - .) / 8 // NumberOfRvaAndSizes
.quad 0 // ExportTable
.quad 0 // ImportTable
.quad 0 // ResourceTable
.quad 0 // ExceptionTable
.quad 0 // CertificationTable
.quad 0 // BaseRelocationTable
#ifdef CONFIG_DEBUG_EFI
.long .Lefi_debug_table - .L_head // DebugTable
.long .Lefi_debug_table_size
#endif
// Section table
.Lsection_table:
.ascii ".text\0\0\0"
.long __initdata_begin - .Lefi_header_end // VirtualSize
.long .Lefi_header_end - .L_head // VirtualAddress
.long __initdata_begin - .Lefi_header_end // SizeOfRawData
.long .Lefi_header_end - .L_head // PointerToRawData
.long 0 // PointerToRelocations
.long 0 // PointerToLineNumbers
.short 0 // NumberOfRelocations
.short 0 // NumberOfLineNumbers
.long IMAGE_SCN_CNT_CODE | \
IMAGE_SCN_MEM_READ | \
IMAGE_SCN_MEM_EXECUTE // Characteristics
.ascii ".data\0\0\0"
.long __pecoff_data_size // VirtualSize
.long __initdata_begin - .L_head // VirtualAddress
.long __pecoff_data_rawsize // SizeOfRawData
.long __initdata_begin - .L_head // PointerToRawData
.long 0 // PointerToRelocations
.long 0 // PointerToLineNumbers
.short 0 // NumberOfRelocations
.short 0 // NumberOfLineNumbers
.long IMAGE_SCN_CNT_INITIALIZED_DATA | \
IMAGE_SCN_MEM_READ | \
IMAGE_SCN_MEM_WRITE // Characteristics
.set .Lsection_count, (. - .Lsection_table) / 40
#ifdef CONFIG_DEBUG_EFI
/*
* The debug table is referenced via its Relative Virtual Address (RVA),
* which is only defined for those parts of the image that are covered
* by a section declaration. Since this header is not covered by any
* section, the debug table must be emitted elsewhere. So stick it in
* the .init.rodata section instead.
*
* Note that the EFI debug entry itself may legally have a zero RVA,
* which means we can simply put it right after the section headers.
*/
__INITRODATA
.align 2
.Lefi_debug_table:
// EFI_IMAGE_DEBUG_DIRECTORY_ENTRY
.long 0 // Characteristics
.long 0 // TimeDateStamp
.short 0 // MajorVersion
.short 0 // MinorVersion
.long IMAGE_DEBUG_TYPE_CODEVIEW // Type
.long .Lefi_debug_entry_size // SizeOfData
.long 0 // RVA
.long .Lefi_debug_entry - .L_head // FileOffset
.set .Lefi_debug_table_size, . - .Lefi_debug_table
.previous
.Lefi_debug_entry:
// EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY
.ascii "NB10" // Signature
.long 0 // Unknown
.long 0 // Unknown2
.long 0 // Unknown3
.asciz VMLINUX_PATH
.set .Lefi_debug_entry_size, . - .Lefi_debug_entry
#endif
.balign SEGMENT_ALIGN
.Lefi_header_end:
#else
.set .Lpe_header_offset, 0x0
#endif
.endm
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