b50a3225cd
We no longer map the first 64 KB of the kernel image, as there is nothing there that we ever need to refer back to once the kernel has booted. Even though facilities like kallsyms are very careful to only refer to the region that starts at _stext when mapping virtual addresses to symbol names, let's avoid any confusion by switching to local .L prefixed symbol names for the EFI header, as none of them have any significance to the rest of the kernel. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20201117124729.12642-3-ardb@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
143 lines
4.4 KiB
ArmAsm
143 lines
4.4 KiB
ArmAsm
/* 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_PE_HEADER
|
|
.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 - _head // AddressOfEntryPoint
|
|
.long .Lefi_header_end - _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 - _head // SizeOfImage
|
|
|
|
// Everything before the kernel image is considered part of the header
|
|
.long .Lefi_header_end - _head // SizeOfHeaders
|
|
.long 0 // CheckSum
|
|
.short IMAGE_SUBSYSTEM_EFI_APPLICATION // Subsystem
|
|
.short 0 // 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 - _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 - _head // VirtualAddress
|
|
.long __initdata_begin - .Lefi_header_end // SizeOfRawData
|
|
.long .Lefi_header_end - _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 - _head // VirtualAddress
|
|
.long __pecoff_data_rawsize // SizeOfRawData
|
|
.long __initdata_begin - _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 - _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:
|
|
.endm
|