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arm64: efi: replace open coded constants with symbolic ones

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Replace open coded constants with symbolic ones throughout the
Image and the EFI headers. No binary level changes are intended.

Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Ard Biesheuvel 2017-03-23 19:00:50 +00:00 committed by Catalin Marinas
parent effc7b027a
commit f1eb542f39
1 changed files with 21 additions and 17 deletions
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38
arch/arm64/kernel/efi-header.S
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@ -7,22 +7,24 @@
* published by the Free Software Foundation.
*/
#include <linux/pe.h>
#include <linux/sizes.h>
.macro __EFI_PE_HEADER
.ascii "PE"
.short 0
.long PE_MAGIC
coff_header:
.short 0xaa64 // AArch64
.short 1 // nr_sections
.short IMAGE_FILE_MACHINE_ARM64 // Machine
.short section_count // NumberOfSections
.long 0 // TimeDateStamp
.long 0 // PointerToSymbolTable
.long 0 // NumberOfSymbols
.short section_table - optional_header // SizeOfOptionalHeader
.short 0x206 // Characteristics.
// IMAGE_FILE_DEBUG_STRIPPED |
// IMAGE_FILE_EXECUTABLE_IMAGE |
// IMAGE_FILE_LINE_NUMS_STRIPPED
.short IMAGE_FILE_DEBUG_STRIPPED | \
IMAGE_FILE_EXECUTABLE_IMAGE | \
IMAGE_FILE_LINE_NUMS_STRIPPED // Characteristics
optional_header:
.short 0x20b // PE32+ format
.short PE_OPT_MAGIC_PE32PLUS // PE32+ format
.byte 0x02 // MajorLinkerVersion
.byte 0x14 // MinorLinkerVersion
.long _end - efi_header_end // SizeOfCode
@ -33,7 +35,7 @@ optional_header:
extra_header_fields:
.quad 0 // ImageBase
.long 0x1000 // SectionAlignment
.long SZ_4K // SectionAlignment
.long PECOFF_FILE_ALIGNMENT // FileAlignment
.short 0 // MajorOperatingSystemVersion
.short 0 // MinorOperatingSystemVersion
@ -48,7 +50,7 @@ extra_header_fields:
// Everything before the kernel image is considered part of the header
.long efi_header_end - _head // SizeOfHeaders
.long 0 // CheckSum
.short 0xa // Subsystem (EFI application)
.short IMAGE_SUBSYSTEM_EFI_APPLICATION // Subsystem
.short 0 // DllCharacteristics
.quad 0 // SizeOfStackReserve
.quad 0 // SizeOfStackCommit
@ -71,10 +73,7 @@ extra_header_fields:
// Section table
section_table:
.ascii ".text"
.byte 0
.byte 0
.byte 0 // end of 0 padding of section name
.ascii ".text\0\0\0"
.long _end - efi_header_end // VirtualSize
.long efi_header_end - _head // VirtualAddress
.long _edata - efi_header_end // SizeOfRawData
@ -84,7 +83,12 @@ section_table:
.long 0 // PointerToLineNumbers
.short 0 // NumberOfRelocations
.short 0 // NumberOfLineNumbers
.long 0xe0000020 // Characteristics
.long IMAGE_SCN_CNT_CODE | \
IMAGE_SCN_MEM_EXECUTE | \
IMAGE_SCN_MEM_READ | \
IMAGE_SCN_MEM_WRITE // Characteristics
.set section_count, (. - section_table) / 40
#ifdef CONFIG_DEBUG_EFI
/*
@ -106,7 +110,7 @@ efi_debug_table:
.long 0 // TimeDateStamp
.short 0 // MajorVersion
.short 0 // MinorVersion
.long 2 // Type == EFI_IMAGE_DEBUG_TYPE_CODEVIEW
.long IMAGE_DEBUG_TYPE_CODEVIEW // Type
.long efi_debug_entry_size // SizeOfData
.long 0 // RVA
.long efi_debug_entry - _head // FileOffset