public-mirrors/linux
1
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-08-05 16:54:27 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions
linux/arch/loongarch/kernel/efi-header.S

100 lines
3.4 KiB
ArmAsm
Raw Permalink Normal View History

efi/loongarch: Add efistub booting support This patch adds efistub booting support, which is the standard UEFI boot protocol for LoongArch to use. We use generic efistub, which means we can pass boot information (i.e., system table, memory map, kernel command line, initrd) via a light FDT and drop a lot of non-standard code. We use a flat mapping to map the efi runtime in the kernel's address space. In efi, VA = PA; in kernel, VA = PA + PAGE_OFFSET. As a result, flat mapping is not identity mapping, SetVirtualAddressMap() is still needed for the efi runtime. Tested-by: Xi Ruoyao <xry111@xry111.site> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> [ardb: change fpic to fpie as suggested by Xi Ruoyao] Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-08-19 18:20:37 +08:00
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#include <linux/pe.h>
#include <linux/sizes.h>
.macro __EFI_PE_HEADER
include: pe.h: Fix PE definitions * Rename constants to their standard PE names: - MZ_MAGIC -> IMAGE_DOS_SIGNATURE - PE_MAGIC -> IMAGE_NT_SIGNATURE - PE_OPT_MAGIC_PE32_ROM -> IMAGE_ROM_OPTIONAL_HDR_MAGIC - PE_OPT_MAGIC_PE32 -> IMAGE_NT_OPTIONAL_HDR32_MAGIC - PE_OPT_MAGIC_PE32PLUS -> IMAGE_NT_OPTIONAL_HDR64_MAGIC - IMAGE_DLL_CHARACTERISTICS_NX_COMPAT -> IMAGE_DLLCHARACTERISTICS_NX_COMPAT * Import constants and their description from readpe and file projects which contains current up-to-date information: - IMAGE_FILE_MACHINE_* - IMAGE_FILE_* - IMAGE_SUBSYSTEM_* - IMAGE_DLLCHARACTERISTICS_* - IMAGE_DLLCHARACTERISTICS_EX_* - IMAGE_DEBUG_TYPE_* * Add missing IMAGE_SCN_* constants and update their incorrect description * Fix incorrect value of IMAGE_SCN_MEM_PURGEABLE constant * Add description for win32_version and loader_flags PE fields Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2025-05-04 20:22:44 +02:00
.long IMAGE_NT_SIGNATURE
efi/loongarch: Add efistub booting support This patch adds efistub booting support, which is the standard UEFI boot protocol for LoongArch to use. We use generic efistub, which means we can pass boot information (i.e., system table, memory map, kernel command line, initrd) via a light FDT and drop a lot of non-standard code. We use a flat mapping to map the efi runtime in the kernel's address space. In efi, VA = PA; in kernel, VA = PA + PAGE_OFFSET. As a result, flat mapping is not identity mapping, SetVirtualAddressMap() is still needed for the efi runtime. Tested-by: Xi Ruoyao <xry111@xry111.site> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> [ardb: change fpic to fpie as suggested by Xi Ruoyao] Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-08-19 18:20:37 +08:00
.Lcoff_header:
.short IMAGE_FILE_MACHINE_LOONGARCH64 /* 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:
include: pe.h: Fix PE definitions * Rename constants to their standard PE names: - MZ_MAGIC -> IMAGE_DOS_SIGNATURE - PE_MAGIC -> IMAGE_NT_SIGNATURE - PE_OPT_MAGIC_PE32_ROM -> IMAGE_ROM_OPTIONAL_HDR_MAGIC - PE_OPT_MAGIC_PE32 -> IMAGE_NT_OPTIONAL_HDR32_MAGIC - PE_OPT_MAGIC_PE32PLUS -> IMAGE_NT_OPTIONAL_HDR64_MAGIC - IMAGE_DLL_CHARACTERISTICS_NX_COMPAT -> IMAGE_DLLCHARACTERISTICS_NX_COMPAT * Import constants and their description from readpe and file projects which contains current up-to-date information: - IMAGE_FILE_MACHINE_* - IMAGE_FILE_* - IMAGE_SUBSYSTEM_* - IMAGE_DLLCHARACTERISTICS_* - IMAGE_DLLCHARACTERISTICS_EX_* - IMAGE_DEBUG_TYPE_* * Add missing IMAGE_SCN_* constants and update their incorrect description * Fix incorrect value of IMAGE_SCN_MEM_PURGEABLE constant * Add description for win32_version and loader_flags PE fields Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2025-05-04 20:22:44 +02:00
.short IMAGE_NT_OPTIONAL_HDR64_MAGIC /* PE32+ format */
efi/loongarch: Add efistub booting support This patch adds efistub booting support, which is the standard UEFI boot protocol for LoongArch to use. We use generic efistub, which means we can pass boot information (i.e., system table, memory map, kernel command line, initrd) via a light FDT and drop a lot of non-standard code. We use a flat mapping to map the efi runtime in the kernel's address space. In efi, VA = PA; in kernel, VA = PA + PAGE_OFFSET. As a result, flat mapping is not identity mapping, SetVirtualAddressMap() is still needed for the efi runtime. Tested-by: Xi Ruoyao <xry111@xry111.site> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> [ardb: change fpic to fpie as suggested by Xi Ruoyao] Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-08-19 18:20:37 +08:00
.byte 0x02 /* MajorLinkerVersion */
.byte 0x14 /* MinorLinkerVersion */
.long __inittext_end - .Lefi_header_end /* SizeOfCode */
LoongArch: Calculate various sizes in the linker script Taking the address delta between symbols in different sections is not supported by the LLVM IAS. Instead, do this in the linker script, so the same data can be properly referenced in assembly. Signed-off-by: WANG Rui <wangrui@loongson.cn> Signed-off-by: WANG Xuerui <git@xen0n.name> [chenhuacai: Fix build with !CONFIG_EFI_STUB] Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2023-06-29 20:58:42 +08:00
.long _kernel_vsize /* SizeOfInitializedData */
efi/loongarch: Add efistub booting support This patch adds efistub booting support, which is the standard UEFI boot protocol for LoongArch to use. We use generic efistub, which means we can pass boot information (i.e., system table, memory map, kernel command line, initrd) via a light FDT and drop a lot of non-standard code. We use a flat mapping to map the efi runtime in the kernel's address space. In efi, VA = PA; in kernel, VA = PA + PAGE_OFFSET. As a result, flat mapping is not identity mapping, SetVirtualAddressMap() is still needed for the efi runtime. Tested-by: Xi Ruoyao <xry111@xry111.site> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> [ardb: change fpic to fpie as suggested by Xi Ruoyao] Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-08-19 18:20:37 +08:00
.long 0 /* SizeOfUninitializedData */
.long __efistub_efi_pe_entry - _head /* AddressOfEntryPoint */
.long .Lefi_header_end - _head /* BaseOfCode */
.Lextra_header_fields:
.quad 0 /* ImageBase */
.long PECOFF_SEGMENT_ALIGN /* SectionAlignment */
.long PECOFF_FILE_ALIGN /* 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 */
/* Section table */
.Lsection_table:
.ascii ".text\0\0\0"
.long __inittext_end - .Lefi_header_end /* VirtualSize */
.long .Lefi_header_end - _head /* VirtualAddress */
.long __inittext_end - .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"
LoongArch: Calculate various sizes in the linker script Taking the address delta between symbols in different sections is not supported by the LLVM IAS. Instead, do this in the linker script, so the same data can be properly referenced in assembly. Signed-off-by: WANG Rui <wangrui@loongson.cn> Signed-off-by: WANG Xuerui <git@xen0n.name> [chenhuacai: Fix build with !CONFIG_EFI_STUB] Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2023-06-29 20:58:42 +08:00
.long _kernel_vsize /* VirtualSize */
efi/loongarch: Add efistub booting support This patch adds efistub booting support, which is the standard UEFI boot protocol for LoongArch to use. We use generic efistub, which means we can pass boot information (i.e., system table, memory map, kernel command line, initrd) via a light FDT and drop a lot of non-standard code. We use a flat mapping to map the efi runtime in the kernel's address space. In efi, VA = PA; in kernel, VA = PA + PAGE_OFFSET. As a result, flat mapping is not identity mapping, SetVirtualAddressMap() is still needed for the efi runtime. Tested-by: Xi Ruoyao <xry111@xry111.site> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> [ardb: change fpic to fpie as suggested by Xi Ruoyao] Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-08-19 18:20:37 +08:00
.long __initdata_begin - _head /* VirtualAddress */
LoongArch: Calculate various sizes in the linker script Taking the address delta between symbols in different sections is not supported by the LLVM IAS. Instead, do this in the linker script, so the same data can be properly referenced in assembly. Signed-off-by: WANG Rui <wangrui@loongson.cn> Signed-off-by: WANG Xuerui <git@xen0n.name> [chenhuacai: Fix build with !CONFIG_EFI_STUB] Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2023-06-29 20:58:42 +08:00
.long _kernel_rsize /* SizeOfRawData */
efi/loongarch: Add efistub booting support This patch adds efistub booting support, which is the standard UEFI boot protocol for LoongArch to use. We use generic efistub, which means we can pass boot information (i.e., system table, memory map, kernel command line, initrd) via a light FDT and drop a lot of non-standard code. We use a flat mapping to map the efi runtime in the kernel's address space. In efi, VA = PA; in kernel, VA = PA + PAGE_OFFSET. As a result, flat mapping is not identity mapping, SetVirtualAddressMap() is still needed for the efi runtime. Tested-by: Xi Ruoyao <xry111@xry111.site> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> [ardb: change fpic to fpie as suggested by Xi Ruoyao] Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-08-19 18:20:37 +08:00
.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
.balign 0x10000 /* PECOFF_SEGMENT_ALIGN */
.Lefi_header_end:
.endm
Reference in a new issue Copy permalink