mirror of
https://github.com/AsahiLinux/u-boot
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9ef5ccaa71
The alignment of sections in the EFI binaries generated by U-Boot is incorrect. According to the PE-COFF specification [1] the minimum value for FileAlignment is 512. If the value of SectionAlignment is less then the page size, it must equal FileAlignment. Let's set both values to 512 for the ARM and RISC-V architectures. [1] https://docs.microsoft.com/en-us/windows/win32/debug/pe-format Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
170 lines
4.7 KiB
ArmAsm
170 lines
4.7 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* crt0-efi-riscv.S - PE/COFF header for RISC-V EFI applications
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*
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* Copright (C) 2014 Linaro Ltd. <ard.biesheuvel@linaro.org>
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* Copright (C) 2018 Alexander Graf <agraf@suse.de>
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*
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* This file is inspired by arch/arm/lib/crt0_aarch64_efi.S
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*/
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#include <asm-generic/pe.h>
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#if __riscv_xlen == 64
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#define SIZE_LONG 8
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#define SAVE_LONG(reg, idx) sd reg, (idx*SIZE_LONG)(sp)
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#define LOAD_LONG(reg, idx) ld reg, (idx*SIZE_LONG)(sp)
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#define PE_MACHINE IMAGE_FILE_MACHINE_RISCV64
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#define PE_MAGIC IMAGE_NT_OPTIONAL_HDR64_MAGIC
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#else
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#define SIZE_LONG 4
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#define SAVE_LONG(reg, idx) sw reg, (idx*SIZE_LONG)(sp)
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#define LOAD_LONG(reg, idx) lw reg, (idx*SIZE_LONG)(sp)
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#define PE_MACHINE IMAGE_FILE_MACHINE_RISCV32
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#define PE_MAGIC IMAGE_NT_OPTIONAL_HDR32_MAGIC
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#endif
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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 46 /* 'MZ' + pad + offset == 64 */
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.long 0x43534952 /* Linux magic "RISCV */
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.long 0x00000056
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.long 0x05435352 /* Linux magic2 "RSC\x05*/
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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 PE_MACHINE /* RISC-V 64/32-bit */
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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 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_DEBUG_STRIPPED)
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optional_header:
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.short PE_MAGIC /* PE32(+) format */
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.byte 0x02 /* MajorLinkerVersion */
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.byte 0x14 /* MinorLinkerVersion */
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.long _edata - _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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#if __riscv_xlen == 32
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.long 0 /* BaseOfData */
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#endif
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extra_header_fields:
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#if __riscv_xlen == 32
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.long 0 /* ImageBase */
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#else
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.quad 0 /* ImageBase */
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#endif
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.long 0x200 /* 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 1 /* 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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#if __riscv_xlen == 32
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.long 0 /* SizeOfStackReserve */
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.long 0 /* SizeOfStackCommit */
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.long 0 /* SizeOfHeapReserve */
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.long 0 /* SizeOfHeapCommit */
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#else
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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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#endif
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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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.long 0x42100040 /* Characteristics (section flags) */
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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 _edata - _start /* VirtualSize */
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.long _start - ImageBase /* VirtualAddress */
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.long _edata - _start /* SizeOfRawData */
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.long _start - ImageBase /* PointerToRawData */
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.long 0 /* PointerToRelocations (0 for executables) */
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.long 0 /* PointerToLineNumbers (0 for executables) */
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.short 0 /* NumberOfRelocations (0 for executables) */
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.short 0 /* NumberOfLineNumbers (0 for executables) */
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.long 0xe0500020 /* Characteristics (section flags) */
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.align 9
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_start:
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addi sp, sp, -(SIZE_LONG * 3)
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SAVE_LONG(a0, 0)
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SAVE_LONG(a1, 1)
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SAVE_LONG(ra, 2)
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lla a0, ImageBase
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lla a1, _DYNAMIC
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call _relocate
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bne a0, zero, 0f
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LOAD_LONG(a1, 1)
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LOAD_LONG(a0, 0)
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call efi_main
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LOAD_LONG(ra, 2)
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0: addi sp, sp, (SIZE_LONG * 3)
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ret
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