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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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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2 as
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+ * published by the Free Software Foundation.
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+ */
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+
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+ .macro __EFI_PE_HEADER
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+ .ascii "PE"
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+ .short 0
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+coff_header:
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+ .short 0xaa64 // AArch64
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+ .short 2 // nr_sections
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+ .long 0 // TimeDateStamp
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+ .long 0 // PointerToSymbolTable
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+ .long 1 // NumberOfSymbols
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+ .short section_table - optional_header // SizeOfOptionalHeader
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+ .short 0x206 // Characteristics.
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+ // 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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+optional_header:
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+ .short 0x20b // PE32+ format
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+ .byte 0x02 // MajorLinkerVersion
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+ .byte 0x14 // MinorLinkerVersion
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+ .long _end - efi_header_end // SizeOfCode
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+ .long 0 // SizeOfInitializedData
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+ .long 0 // SizeOfUninitializedData
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+ .long __efistub_entry - _head // AddressOfEntryPoint
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+ .long efi_header_end - _head // BaseOfCode
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+
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+extra_header_fields:
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+ .quad 0 // ImageBase
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+ .long 0x1000 // 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 0 // MajorImageVersion
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+ .short 0 // 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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+
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+ .long _end - _head // SizeOfImage
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+
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+ // Everything before the kernel image is considered part of the header
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+ .long efi_header_end - _head // SizeOfHeaders
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+ .long 0 // CheckSum
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+ .short 0xa // Subsystem (EFI application)
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+ .short 0 // 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 (section_table - .) / 8 // NumberOfRvaAndSizes
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+
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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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+
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+#ifdef CONFIG_DEBUG_EFI
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+ .long efi_debug_table - _head // DebugTable
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+ .long efi_debug_table_size
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+#endif
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+
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+ // Section table
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+section_table:
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+
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+ /*
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+ * The EFI application loader requires a relocation section
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+ * because EFI applications must be relocatable. This is a
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+ * dummy section as far as we are concerned.
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+ */
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+ .ascii ".reloc"
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+ .byte 0
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+ .byte 0 // end of 0 padding of section name
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+ .long 0
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+ .long 0
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+ .long 0 // SizeOfRawData
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+ .long 0 // 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 0x42100040 // Characteristics (section flags)
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+
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+
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+ .ascii ".text"
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+ .byte 0
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+ .byte 0
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+ .byte 0 // end of 0 padding of section name
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+ .long _end - efi_header_end // VirtualSize
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+ .long efi_header_end - _head // VirtualAddress
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+ .long _edata - efi_header_end // SizeOfRawData
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+ .long efi_header_end - _head // PointerToRawData
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+
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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 0xe0500020 // Characteristics
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+
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+#ifdef CONFIG_DEBUG_EFI
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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 EFI debug entry itself may legally have a zero RVA,
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+ * which means we can simply put it right after the section headers.
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+ */
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+ __INITRODATA
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+
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+ .align 2
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+efi_debug_table:
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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 2 // Type == EFI_IMAGE_DEBUG_TYPE_CODEVIEW
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+ .long efi_debug_entry_size // SizeOfData
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+ .long 0 // RVA
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+ .long efi_debug_entry - _head // FileOffset
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+
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+ .set efi_debug_table_size, . - efi_debug_table
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+ .previous
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+
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+efi_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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+
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+ .asciz VMLINUX_PATH
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+
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+ .set efi_debug_entry_size, . - efi_debug_entry
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+#endif
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+
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+ /*
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+ * EFI will load .text onwards at the 4k section alignment
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+ * described in the PE/COFF header. To ensure that instruction
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+ * sequences using an adrp and a :lo12: immediate will function
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+ * correctly at this alignment, we must ensure that .text is
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+ * placed at a 4k boundary in the Image to begin with.
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+ */
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+ .align 12
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+efi_header_end:
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+ .endm
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Ard Biesheuvel