182 lines
5.5 KiB
ArmAsm
182 lines
5.5 KiB
ArmAsm
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2013 - 2017 Linaro, Ltd.
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* Copyright (C) 2013, 2014 Red Hat, Inc.
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*/
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#include <linux/pe.h>
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#include <linux/sizes.h>
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.macro efi_signature_nop
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#ifdef CONFIG_EFI
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.L_head:
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/*
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* This ccmp instruction has no meaningful effect except that
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* its opcode forms the magic "MZ" signature required by UEFI.
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*/
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ccmp x18, #0, #0xd, pl
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#else
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/*
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* Bootloaders may inspect the opcode at the start of the kernel
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* image to decide if the kernel is capable of booting via UEFI.
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* So put an ordinary NOP here, not the "MZ.." pseudo-nop above.
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*/
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nop
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#endif
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.endm
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.macro __EFI_PE_HEADER
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#ifdef CONFIG_EFI
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.set .Lpe_header_offset, . - .L_head
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.long PE_MAGIC
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.short IMAGE_FILE_MACHINE_ARM64 // Machine
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.short .Lsection_count // NumberOfSections
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.long 0 // TimeDateStamp
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.long 0 // PointerToSymbolTable
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.long 0 // NumberOfSymbols
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.short .Lsection_table - .Loptional_header // SizeOfOptionalHeader
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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 // Characteristics
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.Loptional_header:
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.short PE_OPT_MAGIC_PE32PLUS // PE32+ format
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.byte 0x02 // MajorLinkerVersion
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.byte 0x14 // MinorLinkerVersion
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.long __initdata_begin - .Lefi_header_end // SizeOfCode
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.long __pecoff_data_size // SizeOfInitializedData
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.long 0 // SizeOfUninitializedData
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.long __efistub_efi_pe_entry - .L_head // AddressOfEntryPoint
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.long .Lefi_header_end - .L_head // BaseOfCode
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.quad 0 // ImageBase
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.long SEGMENT_ALIGN // SectionAlignment
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.long PECOFF_FILE_ALIGNMENT // FileAlignment
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.short 0 // MajorOperatingSystemVersion
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.short 0 // MinorOperatingSystemVersion
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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 // MajorSubsystemVersion
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.short 0 // MinorSubsystemVersion
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.long 0 // Win32VersionValue
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.long _end - .L_head // SizeOfImage
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// Everything before the kernel image is considered part of the header
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.long .Lefi_header_end - .L_head // SizeOfHeaders
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.long 0 // CheckSum
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.short IMAGE_SUBSYSTEM_EFI_APPLICATION // Subsystem
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.short IMAGE_DLL_CHARACTERISTICS_NX_COMPAT // DllCharacteristics
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.quad 0 // SizeOfStackReserve
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.quad 0 // SizeOfStackCommit
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.quad 0 // SizeOfHeapReserve
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.quad 0 // SizeOfHeapCommit
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.long 0 // LoaderFlags
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.long (.Lsection_table - .) / 8 // NumberOfRvaAndSizes
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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(CONFIG_DEBUG_EFI) || defined(CONFIG_ARM64_BTI_KERNEL)
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.long .Lefi_debug_table - .L_head // DebugTable
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.long .Lefi_debug_table_size
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/*
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* The debug table is referenced via its Relative Virtual Address (RVA),
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* which is only defined for those parts of the image that are covered
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* by a section declaration. Since this header is not covered by any
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* section, the debug table must be emitted elsewhere. So stick it in
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* the .init.rodata section instead.
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*
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* Note that the payloads themselves are permitted to have zero RVAs,
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* which means we can simply put those right after the section headers.
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*/
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__INITRODATA
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.align 2
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.Lefi_debug_table:
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#ifdef CONFIG_DEBUG_EFI
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// EFI_IMAGE_DEBUG_DIRECTORY_ENTRY
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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 - .L_head // FileOffset
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#endif
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#ifdef CONFIG_ARM64_BTI_KERNEL
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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 - .L_head // 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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// Section table
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.Lsection_table:
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.ascii ".text\0\0\0"
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.long __initdata_begin - .Lefi_header_end // VirtualSize
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.long .Lefi_header_end - .L_head // VirtualAddress
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.long __initdata_begin - .Lefi_header_end // SizeOfRawData
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.long .Lefi_header_end - .L_head // PointerToRawData
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.long 0 // PointerToRelocations
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.long 0 // PointerToLineNumbers
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.short 0 // NumberOfRelocations
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.short 0 // NumberOfLineNumbers
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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 // Characteristics
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.ascii ".data\0\0\0"
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.long __pecoff_data_size // VirtualSize
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.long __initdata_begin - .L_head // VirtualAddress
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.long __pecoff_data_rawsize // SizeOfRawData
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.long __initdata_begin - .L_head // PointerToRawData
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.long 0 // PointerToRelocations
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.long 0 // PointerToLineNumbers
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.short 0 // NumberOfRelocations
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.short 0 // NumberOfLineNumbers
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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 // Characteristics
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.set .Lsection_count, (. - .Lsection_table) / 40
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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 VMLINUX_PATH
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.set .Lefi_debug_entry_size, . - .Lefi_debug_entry
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#endif
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#ifdef CONFIG_ARM64_BTI_KERNEL
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.Lefi_dll_characteristics_ex:
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.long IMAGE_DLLCHARACTERISTICS_EX_FORWARD_CFI_COMPAT
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#endif
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.balign SEGMENT_ALIGN
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.Lefi_header_end:
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#else
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.set .Lpe_header_offset, 0x0
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#endif
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.endm
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