mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-13 08:27:23 +00:00
d7ddeb66a6
While our EFI binaries execute without problems on EDK II they crash on a Lenovo X13s. Let our binaries look more like what EDK II produces: * move all writable data to a .data section * align sections to 4 KiB boundaries (matching EFI page size) * remove IMAGE_SCN_LNK_NRELOC_OVFL from .reloc section flags Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
158 lines
4.5 KiB
ArmAsm
158 lines
4.5 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0+ OR BSD-2-Clause */
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/*
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* crt0-efi-aarch64.S - PE/COFF header for aarch64 EFI applications
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*
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* Copright (C) 2014 Linaro Ltd. <ard.biesheuvel@linaro.org>
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*
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*
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* This file is taken and modified from the gnu-efi project.
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*/
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#include <asm-generic/pe.h>
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.section .text.head
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/*
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* Magic "MZ" signature for PE/COFF
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*/
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.globl ImageBase
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ImageBase:
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.short IMAGE_DOS_SIGNATURE /* 'MZ' */
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.skip 54 /* 'MZ' + pad + offset == 64 */
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.long LINUX_ARM64_MAGIC /* For GRUB's linux command */
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.long pe_header - ImageBase /* Offset to the PE header */
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pe_header:
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.long IMAGE_NT_SIGNATURE /* 'PE' */
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coff_header:
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.short IMAGE_FILE_MACHINE_ARM64 /* AArch64 */
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.short 3 /* nr_sections */
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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 section_table - optional_header /* SizeOfOptionalHeader */
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/* Characteristics */
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.short (IMAGE_FILE_EXECUTABLE_IMAGE | \
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IMAGE_FILE_LINE_NUMS_STRIPPED | \
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IMAGE_FILE_LOCAL_SYMS_STRIPPED | \
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IMAGE_FILE_LARGE_ADDRESS_AWARE | \
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IMAGE_FILE_DEBUG_STRIPPED)
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optional_header:
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.short IMAGE_NT_OPTIONAL_HDR64_MAGIC /* PE32+ format */
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.byte 0x02 /* MajorLinkerVersion */
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.byte 0x14 /* MinorLinkerVersion */
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.long _etext - _start /* SizeOfCode */
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.long 0 /* SizeOfInitializedData */
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.long 0 /* SizeOfUninitializedData */
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.long _start - ImageBase /* AddressOfEntryPoint */
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.long _start - ImageBase /* BaseOfCode */
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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 0x200 /* 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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.long _edata - ImageBase /* SizeOfImage */
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/*
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* Everything before the kernel image is considered part of the header
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*/
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.long _start - ImageBase /* SizeOfHeaders */
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.long 0 /* CheckSum */
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.short IMAGE_SUBSYSTEM_EFI_APPLICATION /* Subsystem */
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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 0x6 /* 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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/* Section table */
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section_table:
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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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/* Characteristics (section flags) */
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.long (IMAGE_SCN_MEM_READ | \
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IMAGE_SCN_MEM_DISCARDABLE | \
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IMAGE_SCN_CNT_INITIALIZED_DATA)
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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 _etext - _start /* VirtualSize */
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.long _start - ImageBase /* VirtualAddress */
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.long _etext - _start /* SizeOfRawData */
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.long _start - ImageBase /* 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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/* Characteristics (section flags) */
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.long (IMAGE_SCN_MEM_READ | \
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IMAGE_SCN_MEM_EXECUTE | \
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IMAGE_SCN_CNT_CODE)
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.ascii ".data"
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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 _data_size /* VirtualSize */
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.long _data - ImageBase /* VirtualAddress */
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.long _data_size /* SizeOfRawData */
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.long _data - ImageBase /* 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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/* Characteristics (section flags) */
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.long (IMAGE_SCN_MEM_WRITE | \
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IMAGE_SCN_MEM_READ | \
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IMAGE_SCN_CNT_INITIALIZED_DATA)
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.align 12
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_start:
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stp x29, x30, [sp, #-32]!
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mov x29, sp
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stp x0, x1, [sp, #16]
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adr x0, ImageBase
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adrp x1, _DYNAMIC
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add x1, x1, #:lo12:_DYNAMIC
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bl _relocate
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cbnz x0, 0f
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ldp x0, x1, [sp, #16]
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bl efi_main
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0: ldp x29, x30, [sp], #32
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ret
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