arch/arm64/boot/Makefile

Source file repositories/reference/linux-study-clean/arch/arm64/boot/Makefile

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/Makefile
Extension
[no extension]
Size
1538 bytes
Lines
58
Domain
Architecture Layer
Bucket
arch/arm64
Inferred role
Architecture Layer: build/configuration rule
Status
atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#
# arch/arm64/boot/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.
#
# This file is subject to the terms and conditions of the GNU General Public
# License.  See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 2012, ARM Ltd.
# Author: Will Deacon <will.deacon@arm.com>
#
# Based on the ia64 boot/Makefile.
#

OBJCOPYFLAGS_Image :=-O binary -R .note -R .note.gnu.build-id -R .comment -S

targets := Image Image.bz2 Image.gz Image.lz4 Image.lzma Image.lzo \
	Image.zst Image.xz image.fit

$(obj)/Image: vmlinux FORCE
	$(call if_changed,objcopy)

$(obj)/Image.bz2: $(obj)/Image FORCE
	$(call if_changed,bzip2)

$(obj)/Image.gz: $(obj)/Image FORCE
	$(call if_changed,gzip)

$(obj)/Image.lz4: $(obj)/Image FORCE
	$(call if_changed,lz4)

$(obj)/Image.lzma: $(obj)/Image FORCE
	$(call if_changed,lzma)

$(obj)/Image.lzo: $(obj)/Image FORCE
	$(call if_changed,lzo)

$(obj)/Image.zst: $(obj)/Image FORCE
	$(call if_changed,zstd)

$(obj)/Image.xz: $(obj)/Image FORCE
	$(call if_changed,xzkern)

$(obj)/image.fit: $(obj)/Image $(obj)/dts/dtbs-list FORCE
	$(call if_changed,fit)

EFI_ZBOOT_PAYLOAD	:= Image
EFI_ZBOOT_BFD_TARGET	:= elf64-littleaarch64
EFI_ZBOOT_MACH_TYPE	:= ARM64
EFI_ZBOOT_FORWARD_CFI	:= $(CONFIG_ARM64_BTI_KERNEL)

EFI_ZBOOT_OBJCOPY_FLAGS	= --add-symbol zboot_code_size=0x$$( \
				$(NM) vmlinux|grep _kernel_codesize|cut -d' ' -f1)

include $(srctree)/drivers/firmware/efi/libstub/Makefile.zboot

Annotation

Implementation Notes