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arm/efi: Replace open coded constants with symbolic ones

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Replace the various open coded constants in the EFI PE/COFF header with
definitions from pe.h, or expressions based on local symbols.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20170818194947.19347-11-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ard Biesheuvel 2017-08-18 20:49:43 +01:00 committed by Ingo Molnar
parent 574cea724c
commit 609eaf0748
1 changed files with 67 additions and 61 deletions
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128
arch/arm/boot/compressed/efi-header.S
View File

@ -1,5 +1,5 @@
/*
* Copyright (C) 2013-2015 Linaro Ltd
* Copyright (C) 2013-2017 Linaro Ltd
* Authors: Roy Franz <roy.franz@linaro.org>
* Ard Biesheuvel <ard.biesheuvel@linaro.org>
*
@ -8,6 +8,9 @@
* published by the Free Software Foundation.
*/
#include <linux/pe.h>
#include <linux/sizes.h>
.macro __nop
#ifdef CONFIG_EFI_STUB
@ This is almost but not quite a NOP, since it does clobber the
@ -15,7 +18,7 @@
@ PE/COFF expects the magic string "MZ" at offset 0, while the
@ ARM/Linux boot protocol expects an executable instruction
@ there.
.inst 'M' | ('Z' << 8) | (0x1310 << 16) @ tstne r0, #0x4d000
.inst MZ_MAGIC | (0x1310 << 16) @ tstne r0, #0x4d000
#else
AR_CLASS( mov r0, r0 )
M_CLASS( nop.w )
@ -34,78 +37,81 @@
@ The only 2 fields of the MSDOS header that are used are this
@ PE/COFF offset, and the "MZ" bytes at offset 0x0.
@
.long pe_header - start @ Offset to the PE header.
.long pe_header - start @ Offset to the PE header.
pe_header:
.ascii "PE\0\0"
.long PE_MAGIC
coff_header:
.short 0x01c2 @ ARM or Thumb
.short 1 @ nr_sections
.long 0 @ TimeDateStamp
.long 0 @ PointerToSymbolTable
.long 0 @ NumberOfSymbols
.short section_table - optional_header
@ SizeOfOptionalHeader
.short 0x306 @ Characteristics.
@ IMAGE_FILE_32BIT_MACHINE |
@ IMAGE_FILE_DEBUG_STRIPPED |
@ IMAGE_FILE_EXECUTABLE_IMAGE |
@ IMAGE_FILE_LINE_NUMS_STRIPPED
.short IMAGE_FILE_MACHINE_THUMB @ Machine
.short section_count @ NumberOfSections
.long 0 @ TimeDateStamp
.long 0 @ PointerToSymbolTable
.long 0 @ NumberOfSymbols
.short section_table - optional_header @ SizeOfOptionalHeader
.short IMAGE_FILE_32BIT_MACHINE | \
IMAGE_FILE_DEBUG_STRIPPED | \
IMAGE_FILE_EXECUTABLE_IMAGE | \
IMAGE_FILE_LINE_NUMS_STRIPPED @ Characteristics
optional_header:
.short 0x10b @ PE32 format
.byte 0x02 @ MajorLinkerVersion
.byte 0x14 @ MinorLinkerVersion
.long _end - __efi_start @ SizeOfCode
.long 0 @ SizeOfInitializedData
.long 0 @ SizeOfUninitializedData
.long efi_stub_entry - start @ AddressOfEntryPoint
.long start_offset @ BaseOfCode
.long 0 @ data
.short PE_OPT_MAGIC_PE32 @ PE32 format
.byte 0x02 @ MajorLinkerVersion
.byte 0x14 @ MinorLinkerVersion
.long _end - __efi_start @ SizeOfCode
.long 0 @ SizeOfInitializedData
.long 0 @ SizeOfUninitializedData
.long efi_stub_entry - start @ AddressOfEntryPoint
.long start_offset @ BaseOfCode
.long 0 @ BaseOfData
extra_header_fields:
.long 0 @ ImageBase
.long 0x200 @ SectionAlignment
.long 0x200 @ FileAlignment
.short 0 @ MajorOperatingSystemVersion
.short 0 @ MinorOperatingSystemVersion
.short 0 @ MajorImageVersion
.short 0 @ MinorImageVersion
.short 0 @ MajorSubsystemVersion
.short 0 @ MinorSubsystemVersion
.long 0 @ Win32VersionValue
.long 0 @ ImageBase
.long SZ_512 @ SectionAlignment
.long SZ_512 @ FileAlignment
.short 0 @ MajorOsVersion
.short 0 @ MinorOsVersion
.short 0 @ MajorImageVersion
.short 0 @ MinorImageVersion
.short 0 @ MajorSubsystemVersion
.short 0 @ MinorSubsystemVersion
.long 0 @ Win32VersionValue
.long _end - start @ SizeOfImage
.long start_offset @ SizeOfHeaders
.long 0 @ CheckSum
.short 0xa @ Subsystem (EFI application)
.short 0 @ DllCharacteristics
.long 0 @ SizeOfStackReserve
.long 0 @ SizeOfStackCommit
.long 0 @ SizeOfHeapReserve
.long 0 @ SizeOfHeapCommit
.long 0 @ LoaderFlags
.long 0x6 @ NumberOfRvaAndSizes
.long _end - start @ SizeOfImage
.long start_offset @ SizeOfHeaders
.long 0 @ CheckSum
.short IMAGE_SUBSYSTEM_EFI_APPLICATION @ Subsystem
.short 0 @ DllCharacteristics
.long 0 @ SizeOfStackReserve
.long 0 @ SizeOfStackCommit
.long 0 @ SizeOfHeapReserve
.long 0 @ SizeOfHeapCommit
.long 0 @ LoaderFlags
.long (section_table - .) / 8 @ NumberOfRvaAndSizes
.quad 0 @ ExportTable
.quad 0 @ ImportTable
.quad 0 @ ResourceTable
.quad 0 @ ExceptionTable
.quad 0 @ CertificationTable
.quad 0 @ BaseRelocationTable
.quad 0 @ ExportTable
.quad 0 @ ImportTable
.quad 0 @ ResourceTable
.quad 0 @ ExceptionTable
.quad 0 @ CertificationTable
.quad 0 @ BaseRelocationTable
section_table:
.ascii ".text\0\0\0"
.long _end - __efi_start @ VirtualSize
.long __efi_start @ VirtualAddress
.long _edata - __efi_start @ SizeOfRawData
.long __efi_start @ PointerToRawData
.long 0 @ PointerToRelocations
.long 0 @ PointerToLineNumbers
.short 0 @ NumberOfRelocations
.short 0 @ NumberOfLineNumbers
.long 0xe0000020 @ Characteristics
.long _end - __efi_start @ VirtualSize
.long __efi_start @ VirtualAddress
.long _edata - __efi_start @ SizeOfRawData
.long __efi_start @ 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_WRITE | \
IMAGE_SCN_MEM_EXECUTE @ Characteristics
.set section_count, (. - section_table) / 40
.align 9
__efi_start: